/* ========================================
   CGPA CALCULATOR PAKISTAN
   Duolingo-Inspired Design System
   ======================================== */

/* ===== SKIP LINK (accessibility) ===== */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: #0F172A;
  color: #fff;
  padding: 8px 20px;
  font-size: .875rem;
  font-weight: 600;
  text-decoration: none;
  z-index: 9999;
  border-radius: 0 0 6px 0;
}
.skip-link:focus { top: 0; }

/* ===== GOOGLE FONTS ===== */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800;900&display=swap');

/* ===== DESIGN TOKENS ===== */
:root {
  /* ── Brand Greens */
  --green:         #10B981;
  --green-dark:    #059669;
  --green-darker:  #047857;
  --green-light:   #34D399;
  --green-pale:    #D1FAE5;
  --green-surface: #ECFDF5;

  /* ── Accent Palette */
  --purple:        #8B5CF6;
  --purple-dark:   #7C3AED;
  --purple-pale:   #EDE9FE;

  --yellow:        #F59E0B;
  --yellow-dark:   #D97706;
  --yellow-pale:   #FEF3C7;

  --pink:          #EC4899;
  --pink-dark:     #DB2777;
  --pink-pale:     #FCE7F3;

  --sky:           #0EA5E9;
  --sky-dark:      #0284C7;
  --sky-pale:      #E0F2FE;

  --orange:        #F97316;
  --orange-dark:   #EA580C;
  --orange-pale:   #FFEDD5;

  --red:           #EF4444;
  --red-dark:      #DC2626;
  --red-pale:      #FEE2E2;

  /* ── Neutrals */
  --text:          #111827;
  --text-sec:      #374151;
  --text-muted:    #6B7280;
  --text-light:    #9CA3AF;
  --border:        #E5E7EB;
  --border-light:  #F3F4F6;
  --surface:       #F9FAFB;
  --white:         #FFFFFF;

  /* ── Semantic aliases (backwards compat) */
  --primary:       var(--green);
  --primary-dark:  var(--green-dark);
  --primary-light: var(--green-light);
  --secondary:     var(--sky);
  --accent:        var(--yellow);
  --success:       var(--green);
  --danger:        var(--red);
  --bg:            var(--white);
  --bg-alt:        var(--surface);
  --bg-card:       var(--white);

  /* ── Border Radii */
  --r-sm:   10px;
  --r:      16px;
  --r-lg:   20px;
  --r-xl:   28px;
  --r-2xl:  36px;
  --radius:     var(--r);
  --radius-sm:  var(--r-sm);

  /* ── Shadows */
  --shadow-xs: 0 1px 3px rgba(0,0,0,0.06);
  --shadow:    0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 36px rgba(0,0,0,0.10);
  --shadow-xl: 0 24px 56px rgba(0,0,0,0.12);

  /* ── 3D Button Ledges */
  --ledge-green:  0 5px 0 var(--green-dark);
  --ledge-purple: 0 5px 0 var(--purple-dark);
  --ledge-yellow: 0 5px 0 var(--yellow-dark);
  --ledge-sky:    0 5px 0 var(--sky-dark);
  --ledge-pink:   0 5px 0 var(--pink-dark);
  --ledge-orange: 0 5px 0 var(--orange-dark);
  --ledge-white:  0 5px 0 rgba(0,0,0,0.15);

  /* ── Font */
  --font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;

  /* ── Transitions */
  --t-fast:   150ms ease;
  --t:        250ms ease;
  --t-bounce: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
  --t-spring: 600ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font); color: var(--text); background: var(--white); line-height: 1.6; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--green); text-decoration: none; transition: color var(--t-fast); }
a:hover { color: var(--green-dark); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: var(--font); }

/* ===== UTILITIES ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.text-center { text-align: center; }

/* ===== FLOATING ORBS (CSS-only, reusable) ===== */
.orb-bg {
  position: relative;
  overflow: hidden;
}
.orb-bg::before,
.orb-bg::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(80px);
  z-index: 0;
}

/* ===========================
   HEADER / NAV
=========================== */
.site-header {
  background: var(--white);
  border-bottom: 2px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  max-width: 1200px;
  margin: 0 auto;
  height: 68px;
  gap: 16px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--green), var(--green-light));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: 0 3px 0 var(--green-dark);
  transition: transform var(--t-bounce), box-shadow var(--t-bounce);
}
.site-logo:hover .logo-icon {
  transform: translateY(-2px);
  box-shadow: 0 5px 0 var(--green-dark);
}

.logo-text {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}
.logo-text span { color: var(--green); }

/* New header design (hdr-nav) */
.logo-mark-new{width:38px;height:38px;background:linear-gradient(135deg,#10B981,#059669);border-radius:10px;display:flex;align-items:center;justify-content:center;color:white;font-weight:900;font-size:.85rem;letter-spacing:-.02em;box-shadow:0 4px 12px rgba(16,185,129,.28);flex-shrink:0}
.logo-text-new{font-size:1.08rem;font-weight:800;letter-spacing:-.02em;color:#0F172A;line-height:1}
.logo-text-new .lt-green{color:#10B981}
.logo-text-new .lt-muted{color:#94A3B8;font-weight:600}
.hdr-nav{display:none;align-items:center;gap:2px}
@media(min-width:780px){.hdr-nav{display:flex}}
.hdr-nav a{color:#64748B;font-weight:600;font-size:.9rem;padding:.45rem .95rem;border-radius:8px;transition:background .12s,color .12s;text-decoration:none}
.hdr-nav a:hover{background:#F8FAFC;color:#0F172A}
.hdr-nav a.active{background:#ECFDF5;color:#059669;font-weight:700}
.hdr-cta{background:#0F172A;color:white!important;padding:.6rem 1.2rem;border-radius:999px;font-weight:700;font-size:.88rem;text-decoration:none;transition:background .15s}
.hdr-cta:hover{background:#10B981!important;color:white!important}
.hdr-right{display:flex;align-items:center;gap:12px}
@media(max-width:600px){.hdr-cta{display:none}}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.main-nav a,
.main-nav .dropdown-toggle {
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: var(--r-sm);
  font-size: .875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  transition: all var(--t-fast);
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav .dropdown-toggle:hover {
  background: var(--green-surface);
  color: var(--green-dark);
}

.main-nav a.active {
  background: var(--green-surface);
  color: var(--green);
  font-weight: 700;
}

.nav-cta {
  background: var(--green) !important;
  color: var(--white) !important;
  border-radius: var(--r-sm) !important;
  box-shadow: var(--ledge-green) !important;
  padding: 9px 20px !important;
  transition: transform var(--t-bounce), box-shadow var(--t-bounce) !important;
}
.nav-cta:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 7px 0 var(--green-dark) !important;
  background: var(--green) !important;
  color: var(--white) !important;
}
.nav-cta:active {
  transform: translateY(3px) !important;
  box-shadow: 0 2px 0 var(--green-dark) !important;
}

/* ── Dropdown */
.dropdown { position: relative; }

.dropdown-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--r-lg);
  width: 270px;
  padding: 10px;
  display: none;
  z-index: 999;
  max-height: 70vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  animation: dropIn 0.2s var(--t-bounce);
}

@keyframes dropIn {
  from { opacity: 0; transform: translateY(-8px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.dropdown:hover .dropdown-menu { display: block; }

.dropdown-section-title {
  font-size: .7rem;
  font-weight: 800;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .1em;
  padding: 8px 10px 4px;
  margin-top: 4px;
}

.dropdown-menu a {
  display: block;
  color: var(--text-sec);
  padding: 8px 12px;
  border-radius: var(--r-sm);
  font-size: .875rem;
  font-weight: 500;
  transition: all var(--t-fast);
}
.dropdown-menu a:hover { background: var(--green-surface); color: var(--green); }

/* ── Hamburger */
.hamburger {
  display: none;
  background: none;
  border: 2px solid var(--border);
  border-radius: var(--r-sm);
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  transition: border-color var(--t-fast);
}
.hamburger:hover { border-color: var(--green); }
.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all .3s;
}

/* ===========================
   BUTTONS (3D Duolingo-style)
=========================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--r);
  font-family: var(--font);
  font-weight: 700;
  font-size: .95rem;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: transform var(--t-bounce), box-shadow var(--t-bounce), background var(--t-fast);
  position: relative;
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.btn:active { transform: translateY(4px) !important; }

.btn-primary {
  background: var(--green);
  color: var(--white);
  box-shadow: var(--ledge-green);
}
.btn-primary:hover  { transform: translateY(-2px); box-shadow: 0 7px 0 var(--green-dark); color: var(--white); background: var(--green); }
.btn-primary:active { box-shadow: 0 1px 0 var(--green-dark) !important; }

.btn-secondary {
  background: var(--white);
  color: var(--text);
  box-shadow: var(--ledge-white);
  border: 2px solid var(--border);
}
.btn-secondary:hover  { transform: translateY(-2px); box-shadow: 0 7px 0 rgba(0,0,0,0.15); color: var(--text); }
.btn-secondary:active { box-shadow: 0 1px 0 rgba(0,0,0,0.15) !important; }

.btn-outline {
  background: transparent;
  color: var(--green);
  border: 2px solid var(--green);
  box-shadow: none;
}
.btn-outline:hover { background: var(--green-surface); color: var(--green-dark); transform: translateY(-1px); }

.btn-purple {
  background: var(--purple);
  color: var(--white);
  box-shadow: var(--ledge-purple);
}
.btn-purple:hover  { transform: translateY(-2px); box-shadow: 0 7px 0 var(--purple-dark); color: var(--white); background: var(--purple); }
.btn-purple:active { box-shadow: 0 1px 0 var(--purple-dark) !important; }

.btn-yellow {
  background: var(--yellow);
  color: var(--white);
  box-shadow: var(--ledge-yellow);
}
.btn-yellow:hover  { transform: translateY(-2px); box-shadow: 0 7px 0 var(--yellow-dark); color: var(--white); background: var(--yellow); }

.btn-sky {
  background: var(--sky);
  color: var(--white);
  box-shadow: var(--ledge-sky);
}
.btn-sky:hover { transform: translateY(-2px); box-shadow: 0 7px 0 var(--sky-dark); color: var(--white); }

.btn-ghost {
  background: var(--surface);
  color: var(--text-muted);
  box-shadow: none;
  border: 2px solid var(--border);
}
.btn-ghost:hover { background: var(--border-light); color: var(--text); transform: translateY(-1px); }

.btn-success { background: var(--green); color: var(--white); box-shadow: var(--ledge-green); }
.btn-danger  { background: var(--red);   color: var(--white); box-shadow: 0 5px 0 var(--red-dark); }

.btn-sm { padding: 9px 18px; font-size: .825rem; border-radius: var(--r-sm); }
.btn-lg { padding: 16px 36px; font-size: 1.05rem; border-radius: var(--r-lg); }
.btn-xl { padding: 18px 44px; font-size: 1.15rem; border-radius: var(--r-lg); }
.btn-block { width: 100%; }

/* ===========================
   HERO
=========================== */
.hero {
  background:
    radial-gradient(ellipse at 5% 50%,  rgba(16,185,129,0.18) 0%, transparent 55%),
    radial-gradient(ellipse at 95% 15%, rgba(139,92,246,0.14) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 85%, rgba(245,158,11,0.10) 0%, transparent 45%),
    radial-gradient(ellipse at 30% 5%,  rgba(14,165,233,0.10) 0%, transparent 40%),
    linear-gradient(160deg, #F0FDF9 0%, #FFFFFF 60%, #EDE9FE 100%);
  padding: 80px 0 90px;
  position: relative;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--green-surface);
  border: 2px solid var(--green-pale);
  color: var(--green-dark);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: .8rem;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: 0.03em;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 18px;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--green) 0%, var(--sky) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 480px;
  line-height: 1.7;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-stats {
  display: flex;
  gap: 24px;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 2px solid var(--border);
}

.stat-item { text-align: center; }
.stat-num {
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--green);
  line-height: 1;
  letter-spacing: -0.03em;
}
.stat-label { font-size: .75rem; font-weight: 600; color: var(--text-muted); margin-top: 3px; text-transform: uppercase; letter-spacing: 0.05em; }

/* ── Hero Calculator Card */
.hero-calc-card {
  background: var(--white);
  border-radius: var(--r-2xl);
  border: 2px solid var(--border);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  position: relative;
}

.hero-calc-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--green), var(--sky), var(--purple));
}

.hero-calc-header {
  padding: 20px 24px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 2px solid var(--border-light);
}

.hero-calc-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-calc-body { padding: 20px 24px 24px; }

/* ===========================
   SECTION SYSTEM
=========================== */
.section { padding: 80px 0; }
.section-alt { background: var(--surface); }

.section-header { text-align: center; margin-bottom: 56px; }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 16px;
  border-radius: 50px;
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.label-green  { background: var(--green-surface); color: var(--green-dark); border: 1.5px solid var(--green-pale); }
.label-purple { background: var(--purple-pale);   color: var(--purple-dark); border: 1.5px solid #DDD6FE; }
.label-yellow { background: var(--yellow-pale);   color: var(--yellow-dark); border: 1.5px solid #FDE68A; }
.label-sky    { background: var(--sky-pale);      color: var(--sky-dark);    border: 1.5px solid #BAE6FD; }
.label-pink   { background: var(--pink-pale);     color: var(--pink-dark);   border: 1.5px solid #FBCFE8; }
.label-orange { background: var(--orange-pale);   color: var(--orange-dark); border: 1.5px solid #FED7AA; }

/* Backwards compat */
.section-label:not([class*="label-"]) { background: var(--green-surface); color: var(--green-dark); border: 1.5px solid var(--green-pale); }

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 900;
  color: var(--text);
  letter-spacing: -0.03em;
  margin-bottom: 14px;
  line-height: 1.2;
}
.section-title span { color: var(--green); }

.section-desc {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===========================
   CARDS
=========================== */
.cards-grid   { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 24px; }
.cards-grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; }
.cards-grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 20px; }

.card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--r-lg);
  padding: 28px;
  transition: transform var(--t-bounce), box-shadow var(--t-bounce), border-color var(--t-fast);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--border-light); }

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--r);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 18px;
  transition: transform var(--t-bounce);
}
.card:hover .card-icon { transform: scale(1.1) rotate(-5deg); }

.card-icon-green  { background: var(--green-surface); }
.card-icon-purple { background: var(--purple-pale); }
.card-icon-yellow { background: var(--yellow-pale); }
.card-icon-sky    { background: var(--sky-pale); }
.card-icon-pink   { background: var(--pink-pale); }
.card-icon-orange { background: var(--orange-pale); }
/* backwards compat */
.card-icon-blue   { background: var(--sky-pale); }

.card h3 { font-size: 1.05rem; font-weight: 800; margin-bottom: 8px; color: var(--text); }
.card p  { font-size: .875rem; color: var(--text-muted); line-height: 1.65; }

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 16px;
  font-size: .875rem;
  font-weight: 700;
  color: var(--green);
  transition: gap var(--t-fast);
}
.card-link:hover { gap: 8px; color: var(--green-dark); }

/* ── Tool Cards (colorful top border) */
.tool-card { border-top: 4px solid transparent; }
.tool-card-green  { border-top-color: var(--green); }
.tool-card-purple { border-top-color: var(--purple); }
.tool-card-yellow { border-top-color: var(--yellow); }

/* ===========================
   CALCULATOR WRAPPER
=========================== */
.calculator-wrapper {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow);
}

/* ── Tabs (pill style) */
.calc-tabs {
  display: flex;
  gap: 8px;
  padding: 16px 20px;
  background: var(--surface);
  border-bottom: 2px solid var(--border);
}

.calc-tab {
  flex: 1;
  padding: 11px 12px;
  text-align: center;
  font-weight: 700;
  font-size: .85rem;
  cursor: pointer;
  border: 2px solid var(--border);
  border-radius: var(--r-sm);
  background: var(--white);
  color: var(--text-muted);
  transition: all var(--t-bounce);
}
.calc-tab.active {
  background: var(--green);
  color: var(--white);
  border-color: var(--green);
  box-shadow: 0 3px 0 var(--green-dark);
  transform: translateY(-1px);
}
.calc-tab:not(.active):hover {
  border-color: var(--green-pale);
  color: var(--green);
  background: var(--green-surface);
}

.calc-tab-content { display: none; padding: 24px 28px; }
.calc-tab-content.active { display: block; }

/* ===========================
   FORM ELEMENTS
=========================== */
.form-group { margin-bottom: 18px; }

.form-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .825rem;
  font-weight: 700;
  color: var(--text-sec);
  margin-bottom: 7px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-control {
  width: 100%;
  padding: 11px 14px;
  border: 2px solid var(--border);
  border-radius: var(--r-sm);
  font-size: .9rem;
  font-family: var(--font);
  font-weight: 500;
  color: var(--text);
  background: var(--white);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  outline: none;
}
.form-control:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 4px rgba(16,185,129,0.12);
}
.form-control::placeholder { color: var(--text-light); }
.form-select { appearance: none; cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath fill='%236B7280' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; background-size: 18px; padding-right: 40px; }

/* ===========================
   SUBJECTS TABLE
=========================== */
.subjects-table { width: 100%; border-collapse: collapse; margin-bottom: 14px; }

.subjects-table th {
  text-align: left;
  font-size: .72rem;
  font-weight: 800;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .07em;
  padding: 6px 10px 10px;
  border-bottom: 2px solid var(--border);
}

.subjects-table td { padding: 6px 5px; vertical-align: middle; }

.subject-row td input,
.subject-row td select {
  width: 100%;
  padding: 9px 10px;
  border: 2px solid var(--border);
  border-radius: var(--r-sm);
  font-size: .875rem;
  font-family: var(--font);
  font-weight: 500;
  color: var(--text);
  outline: none;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.subject-row td input:focus,
.subject-row td select:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(16,185,129,0.1);
}

.btn-remove-row {
  background: var(--red-pale);
  border: 2px solid #FECACA;
  color: var(--red);
  cursor: pointer;
  font-size: .85rem;
  font-weight: 700;
  padding: 6px 10px;
  border-radius: 8px;
  transition: all var(--t-fast);
  line-height: 1;
}
.btn-remove-row:hover { background: var(--red); color: var(--white); border-color: var(--red); }

.calc-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 8px; align-items: center; }

/* ── Grade Pill (next to each row) */
.grade-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 30px;
  border-radius: 8px;
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0 8px;
  transition: all var(--t-bounce);
  flex-shrink: 0;
}
.grade-pill-a  { background: var(--green-surface);  color: var(--green-dark);  border: 2px solid var(--green-pale); }
.grade-pill-b  { background: var(--sky-pale);       color: var(--sky-dark);    border: 2px solid #BAE6FD; }
.grade-pill-c  { background: var(--yellow-pale);    color: var(--yellow-dark); border: 2px solid #FDE68A; }
.grade-pill-d  { background: var(--orange-pale);    color: var(--orange-dark); border: 2px solid #FED7AA; }
.grade-pill-f  { background: var(--red-pale);       color: var(--red-dark);    border: 2px solid #FECACA; }

/* ===========================
   GRADE METER (Live Progress)
=========================== */
.grade-meter-wrap {
  margin: 20px 0 8px;
}

.grade-meter-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: .78rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.grade-meter-live { color: var(--green); font-size: .9rem; font-weight: 800; }

.grade-meter-track {
  height: 18px;
  background: var(--border-light);
  border-radius: 50px;
  overflow: hidden;
  border: 2px solid var(--border);
  position: relative;
}

.grade-meter-fill {
  height: 100%;
  border-radius: 50px;
  background: linear-gradient(90deg,
    var(--red)    0%,
    var(--orange) 25%,
    var(--yellow) 48%,
    var(--sky)    72%,
    var(--green)  100%
  );
  transition: width 0.7s cubic-bezier(0.34, 1.56, 0.64, 1);
  width: 0%;
  position: relative;
}

.grade-meter-fill::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 4px;
  right: 8px;
  height: 5px;
  background: rgba(255,255,255,0.35);
  border-radius: 50px;
}

.grade-meter-ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 5px;
  padding: 0 2px;
}
.grade-meter-ticks span {
  font-size: .68rem;
  font-weight: 700;
  color: var(--text-light);
}

/* ===========================
   RESULT BOX
=========================== */
.result-box {
  display: none;
  margin-top: 20px;
  padding: 24px;
  background: linear-gradient(135deg, var(--green-surface), rgba(14,165,233,0.05));
  border: 2px solid var(--green-pale);
  border-radius: var(--r-lg);
  text-align: center;
  position: relative;
  overflow: hidden;
  animation: resultReveal 0.5s var(--t-bounce);
}
.result-box.show { display: block; }

.result-box::before {
  content: '';
  position: absolute;
  top: -2px;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--green), var(--sky));
  border-radius: 50px;
}

@keyframes resultReveal {
  from { opacity: 0; transform: scale(0.9) translateY(10px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.result-gpa {
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  background: linear-gradient(135deg, var(--green) 0%, var(--sky) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 4px;
}

.result-label {
  font-size: .825rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.result-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 18px;
  border-radius: 50px;
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  animation: badgePop 0.4s 0.2s var(--t-bounce) both;
}
@keyframes badgePop {
  from { transform: scale(0); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}

.badge-distinction { background: var(--green-surface); color: var(--green-dark); border: 2px solid var(--green-pale); }
.badge-first       { background: var(--sky-pale);      color: var(--sky-dark);    border: 2px solid #BAE6FD; }
.badge-second      { background: var(--yellow-pale);   color: var(--yellow-dark); border: 2px solid #FDE68A; }
.badge-probation   { background: var(--red-pale);      color: var(--red-dark);    border: 2px solid #FECACA; }

.result-pct {
  margin-top: 10px;
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.result-pct strong { color: var(--green); }

/* ===========================
   SEMESTER ROWS (CGPA)
=========================== */
.semester-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 10px;
  align-items: end;
  margin-bottom: 12px;
  padding: 16px;
  background: var(--surface);
  border-radius: var(--r);
  border: 2px solid var(--border);
  transition: border-color var(--t-fast);
}
.semester-row:focus-within { border-color: var(--green-pale); }
.semester-row .form-group { margin-bottom: 0; }

/* ===========================
   GRADING TABLE
=========================== */
.grading-table { width: 100%; border-collapse: collapse; font-size: .875rem; }

.grading-table th {
  background: var(--green);
  color: var(--white);
  padding: 11px 14px;
  text-align: left;
  font-weight: 700;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.grading-table th:first-child { border-radius: var(--r-sm) 0 0 0; }
.grading-table th:last-child  { border-radius: 0 var(--r-sm) 0 0; }

.grading-table td { padding: 9px 14px; border-bottom: 2px solid var(--border-light); color: var(--text-sec); font-weight: 500; }
.grading-table tr:last-child td { border-bottom: none; }
.grading-table tr:nth-child(even) td { background: var(--surface); }
.grading-table tr:hover td { background: var(--green-surface); }

/* ===========================
   BREADCRUMB
=========================== */
.breadcrumb {
  background: var(--surface);
  padding: 12px 0;
  border-bottom: 2px solid var(--border-light);
}
.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  font-size: .825rem;
  font-weight: 600;
}
.breadcrumb-list li { display: flex; align-items: center; gap: 8px; }
.breadcrumb-list li:not(:last-child)::after { content: '›'; color: var(--text-light); font-size: 1rem; }
.breadcrumb-list a { color: var(--green); }
.breadcrumb-list .current { color: var(--text-muted); }

/* ===========================
   PAGE HERO
=========================== */
.page-hero {
  background:
    radial-gradient(ellipse at 0% 100%, rgba(16,185,129,0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 100% 0%, rgba(139,92,246,0.12) 0%, transparent 50%),
    linear-gradient(135deg, #111827 0%, #1F2937 100%);
  color: var(--white);
  padding: 56px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='20' cy='20' r='2'/%3E%3C/g%3E%3C/svg%3E");
}

.page-hero .container { position: relative; z-index: 1; }

.page-hero h1 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}
.page-hero h1 span { color: var(--green-light); }

.page-hero p { opacity: .8; font-size: .975rem; max-width: 540px; margin: 0 auto; line-height: 1.7; }

/* ===========================
   PAGE HERO BADGE (university)
=========================== */
.uni-region-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.1);
  border: 1.5px solid rgba(255,255,255,0.2);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: .8rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: rgba(255,255,255,0.9);
  backdrop-filter: blur(8px);
}

/* ===========================
   CLASSIFICATION TABLE
=========================== */
.class-table-wrap { max-width: 700px; margin: 0 auto; }

.class-row {
  display: flex;
  align-items: center;
  padding: 14px 20px;
  border-radius: var(--r);
  margin-bottom: 10px;
  border: 2px solid;
  gap: 16px;
  transition: transform var(--t-bounce);
}
.class-row:hover { transform: translateX(6px); }

.class-row-green  { background: var(--green-surface);  border-color: var(--green-pale);  }
.class-row-sky    { background: var(--sky-pale);        border-color: #BAE6FD;             }
.class-row-yellow { background: var(--yellow-pale);     border-color: #FDE68A;             }
.class-row-red    { background: var(--red-pale);        border-color: #FECACA;             }

.class-range { font-size: .825rem; font-weight: 700; min-width: 100px; color: var(--text-sec); }
.class-pct   { font-size: .8rem;   font-weight: 600; color: var(--text-muted); min-width: 100px; }
.class-label { font-size: 1rem;    font-weight: 800; flex: 1; }

/* ===========================
   UNIVERSITIES GRID
=========================== */
.uni-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 12px; }

.uni-card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--r);
  padding: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-sec);
  font-size: .85rem;
  font-weight: 600;
  transition: all var(--t-bounce);
}
.uni-card:hover {
  border-color: var(--green);
  box-shadow: 0 4px 0 var(--green), var(--shadow);
  color: var(--green-dark);
  transform: translateY(-3px);
}

.uni-initials {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--green), var(--green-light));
  color: var(--white);
  font-size: .65rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  flex-shrink: 0;
  letter-spacing: -0.02em;
  transition: transform var(--t-bounce);
}
.uni-card:hover .uni-initials { transform: scale(1.1) rotate(-5deg); }

/* ===========================
   FAQ ACCORDION
=========================== */
.faq-item {
  border: 2px solid var(--border);
  border-radius: var(--r);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.faq-item:has(.faq-question.open) { border-color: var(--green-pale); box-shadow: 0 4px 12px rgba(16,185,129,0.08); }

.faq-question {
  width: 100%;
  padding: 18px 20px;
  background: var(--white);
  border: none;
  text-align: left;
  font-family: var(--font);
  font-size: .95rem;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  transition: background var(--t-fast);
}
.faq-question:hover  { background: var(--surface); }
.faq-question.open   { color: var(--green-dark); background: var(--green-surface); }

.faq-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--border);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .65rem;
  transition: transform .35s var(--t-bounce), background var(--t-fast), border-color var(--t-fast);
}
.faq-question.open .faq-icon {
  transform: rotate(180deg);
  background: var(--green);
  border-color: var(--green);
  color: var(--white);
}

.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .35s;
  color: var(--text-muted);
  font-size: .9rem;
  line-height: 1.75;
}
.faq-answer.open { max-height: 400px; padding: 0 20px 20px; }
.faq-answer p { margin-bottom: 8px; }
.faq-answer p:last-child { margin-bottom: 0; }

/* ===========================
   BLOG CARDS
=========================== */
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 28px; }

.blog-card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: transform var(--t-bounce), box-shadow var(--t-bounce);
}
.blog-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }

.blog-img {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  position: relative;
}

.blog-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-size: .775rem;
  font-weight: 600;
  color: var(--text-muted);
}

.blog-category {
  background: var(--green-surface);
  color: var(--green-dark);
  padding: 3px 12px;
  border-radius: 50px;
  font-weight: 800;
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  border: 1.5px solid var(--green-pale);
}

.blog-body { padding: 22px; }
.blog-card h3 { font-size: 1rem; font-weight: 800; margin-bottom: 8px; line-height: 1.4; }
.blog-card h3 a { color: var(--text); }
.blog-card h3 a:hover { color: var(--green-dark); }
.blog-card p { font-size: .875rem; color: var(--text-muted); line-height: 1.65; }

.blog-read-more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 14px;
  font-size: .825rem;
  font-weight: 700;
  color: var(--green);
  transition: gap var(--t-fast);
}
.blog-read-more:hover { gap: 8px; color: var(--green-dark); }

/* ===========================
   INFO BOX
=========================== */
.info-box {
  background: var(--green-surface);
  border: 2px solid var(--green-pale);
  border-radius: var(--r-sm);
  padding: 16px 20px;
  margin-bottom: 16px;
}
.info-box h4 { font-size: .8rem; font-weight: 800; color: var(--green-dark); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.06em; }
.info-box p  { font-size: .875rem; color: var(--text-sec); line-height: 1.65; }

/* ===========================
   CONVERTER TOOL
=========================== */
.converter-card {
  background: var(--white);
  border: 2px solid var(--border);
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow var(--t-fast);
}
.converter-card:focus-within { box-shadow: 0 0 0 4px rgba(16,185,129,0.1), var(--shadow); }

.converter-card-header {
  padding: 18px 24px;
  border-bottom: 2px solid var(--border-light);
}

.converter-card-body { padding: 24px; }

.converter-result {
  background: linear-gradient(135deg, var(--green), var(--sky));
  color: var(--white);
  border-radius: var(--r-lg);
  padding: 22px;
  text-align: center;
  margin-top: 16px;
  display: none;
  animation: resultReveal 0.4s var(--t-bounce);
}
.converter-result.show { display: block; }

.converter-result .result-value { font-size: 2.4rem; font-weight: 900; line-height: 1; letter-spacing: -0.04em; -webkit-text-fill-color: white; }
.converter-result .result-label { opacity: .8; font-size: .9rem; margin-top: 5px; font-weight: 600; }

/* ===========================
   STEP CARDS (How it works)
=========================== */
.step-card {
  text-align: center;
  position: relative;
}

.step-number {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  font-size: 1.4rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: 0 5px 0;
  transition: transform var(--t-bounce);
}

.step-card:hover .step-number { transform: translateY(-4px) scale(1.05); }

.step-number-green  { background: var(--green);  color: var(--white); box-shadow-color: var(--green-dark);  box-shadow: 0 5px 0 var(--green-dark);  }
.step-number-purple { background: var(--purple); color: var(--white); box-shadow: 0 5px 0 var(--purple-dark); }
.step-number-yellow { background: var(--yellow); color: var(--white); box-shadow: 0 5px 0 var(--yellow-dark); }

/* ===========================
   CTA SECTION
=========================== */
.cta-section {
  background:
    radial-gradient(ellipse at 10% 50%,  rgba(16,185,129,0.25) 0%, transparent 60%),
    radial-gradient(ellipse at 90% 50%,  rgba(139,92,246,0.2)  0%, transparent 60%),
    linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  color: var(--white);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); font-weight: 900; margin-bottom: 12px; letter-spacing: -0.03em; }
.cta-section p  { opacity: .8; margin-bottom: 32px; font-size: 1rem; max-width: 500px; margin-left: auto; margin-right: auto; }

/* ===========================
   FOOTER
=========================== */
.site-footer {
  background: #080D18;
  color: rgba(255,255,255,0.6);
  padding: 0;
  position: relative;
}
.footer-accent {
  height: 3px;
  background: linear-gradient(90deg,#10B981 0%,#8B5CF6 50%,#0EA5E9 100%);
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding: 56px 0 44px;
}
.footer-logo { margin-bottom: 18px; display: inline-flex; background: white; border-radius: 12px; padding: 4px 8px; }
.footer-logo img { height: 100px !important; width: auto !important; }
.footer-tagline {
  font-size: .875rem;
  line-height: 1.8;
  color: rgba(255,255,255,.5);
  margin-bottom: 18px;
  max-width: 300px;
}
.footer-badges { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.footer-badge {
  background: rgba(16,185,129,.1);
  color: #34D399;
  border: 1px solid rgba(16,185,129,.22);
  font-size: .7rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  letter-spacing: .03em;
}
.footer-disclaimer {
  font-size: .75rem;
  color: rgba(255,255,255,.28);
  line-height: 1.6;
  max-width: 280px;
  padding: 10px 12px;
  background: rgba(255,255,255,.03);
  border-left: 2px solid rgba(245,158,11,.4);
  border-radius: 0 6px 6px 0;
}
.footer-heading {
  color: #fff;
  font-size: .7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .12em;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.footer-links { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 11px; }
.footer-links a {
  color: rgba(255,255,255,.5);
  font-size: .875rem;
  font-weight: 500;
  text-decoration: none;
  transition: color .15s, padding-left .15s;
  display: inline-block;
}
.footer-links a:hover { color: #10B981; padding-left: 5px; }
.footer-link-highlight { color: #10B981 !important; font-weight: 700 !important; }
.footer-stats {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid rgba(255,255,255,.06);
  border-bottom: 1px solid rgba(255,255,255,.06);
  padding: 22px 0;
  margin-bottom: 0;
}
.footer-stat { display: flex; flex-direction: column; align-items: center; gap: 4px; flex: 1; }
.footer-stat + .footer-stat { border-left: 1px solid rgba(255,255,255,.06); }
.fstat-num { font-size: 1.3rem; font-weight: 900; color: #10B981; line-height: 1; }
.fstat-lbl { font-size: .65rem; color: rgba(255,255,255,.35); font-weight: 600; letter-spacing: .04em; text-align: center; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  gap: 12px;
}
.footer-copy { font-size: .82rem; color: rgba(255,255,255,.35); }
.footer-copy strong { color: rgba(255,255,255,.6); font-weight: 700; }
.footer-legal { display: flex; gap: 22px; }
.footer-legal a {
  color: rgba(255,255,255,.35);
  font-size: .8rem;
  font-weight: 600;
  text-decoration: none;
  transition: color .15s;
}
.footer-legal a:hover { color: #10B981; }
.disclaimer-text {
  background: rgba(255,255,255,.04);
  border-left: 2px solid rgba(245,158,11,.4);
  padding: 10px 14px;
  border-radius: 0 6px 6px 0;
  font-size: .78rem;
  line-height: 1.65;
  margin-top: 14px;
  color: rgba(255,255,255,.35);
}

/* ===========================
   CONTACT
=========================== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-info-item { display: flex; gap: 14px; margin-bottom: 24px; align-items: flex-start; }
.contact-info-icon {
  width: 46px;
  height: 46px;
  border-radius: var(--r-sm);
  background: var(--green-surface);
  border: 2px solid var(--green-pale);
  color: var(--green);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.2rem;
  transition: transform var(--t-bounce);
}
.contact-info-item:hover .contact-info-icon { transform: scale(1.1) rotate(-5deg); }

/* ===========================
   BLOG POST CONTENT
=========================== */
.blog-post-content { max-width: 780px; margin: 0 auto; line-height: 1.8; }
.blog-post-content h2 { font-size: 1.4rem; font-weight: 800; margin: 36px 0 14px; color: var(--text); letter-spacing: -0.02em; }
.blog-post-content h3 { font-size: 1.1rem; font-weight: 800; margin: 28px 0 10px; color: var(--text); }
.blog-post-content p  { margin-bottom: 16px; color: var(--text-sec); font-size: .975rem; }
.blog-post-content ul, .blog-post-content ol { margin: 0 0 16px 24px; color: var(--text-sec); font-size: .975rem; }
.blog-post-content li { margin-bottom: 8px; }
.blog-post-content table { width: 100%; border-collapse: collapse; margin-bottom: 20px; border-radius: var(--r-sm); overflow: hidden; border: 2px solid var(--border); }
.blog-post-content th { background: var(--green); color: var(--white); padding: 11px 14px; text-align: left; font-weight: 700; font-size: .85rem; }
.blog-post-content td { padding: 10px 14px; border-bottom: 1px solid var(--border-light); color: var(--text-sec); font-weight: 500; }
.blog-post-content tr:nth-child(even) td { background: var(--surface); }
.blog-post-content .highlight-box {
  background: var(--green-surface);
  border: 2px solid var(--green-pale);
  border-left: 4px solid var(--green);
  padding: 16px 20px;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  margin: 20px 0;
}
.blog-post-content .highlight-box p { margin-bottom: 0; color: var(--text); }

/* ===========================
   TABLE RESPONSIVE
=========================== */
.table-responsive { overflow-x: auto; border-radius: var(--r-sm); }

/* ===========================
   REGION FILTER (Universities page)
=========================== */
.filter-btn {
  padding: 8px 18px;
  border-radius: 50px;
  border: 2px solid var(--border);
  background: var(--white);
  font-family: var(--font);
  font-size: .825rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--t-bounce);
}
.filter-btn.active, .filter-btn:hover {
  background: var(--green);
  color: var(--white);
  border-color: var(--green);
  box-shadow: 0 3px 0 var(--green-dark);
  transform: translateY(-2px);
}
.filter-btn:active { transform: translateY(1px) !important; }

/* ===== AUTHOR SECTION ===== */
.author-section{background:#F8FAFC;border-top:2px solid #E2E8F0;padding:36px 0}
.author-card{display:flex;gap:24px;align-items:flex-start;background:white;border:1.5px solid var(--border);border-radius:14px;padding:24px 28px;box-shadow:0 2px 12px rgba(0,0,0,.05);max-width:820px}
@media(max-width:580px){.author-card{flex-direction:column;gap:16px;padding:18px 16px}}
.author-avatar{width:76px;height:76px;border-radius:50%;background:linear-gradient(135deg,#10B981,#059669);display:flex;align-items:center;justify-content:center;font-weight:900;font-size:1.5rem;color:white;flex-shrink:0;overflow:hidden;box-shadow:0 4px 14px rgba(16,185,129,.28)}
.author-avatar img{width:100%;height:100%;object-fit:cover;border-radius:50%}
.author-body{flex:1;min-width:0}
.author-verified-badge{display:inline-flex;align-items:center;gap:5px;background:#ECFDF5;color:#065F46;font-size:.7rem;font-weight:800;padding:3px 10px;border-radius:20px;margin-bottom:8px;text-transform:uppercase;letter-spacing:.05em;border:1px solid #A7F3D0}
.author-name{font-size:1.05rem;font-weight:800;color:#0F172A;margin:0 0 2px 0}
.author-role{font-size:.82rem;color:#10B981;font-weight:700;margin:0 0 10px 0}
.author-bio{font-size:.875rem;color:#4B5563;line-height:1.75;margin:0 0 14px 0}
.author-links{display:flex;gap:8px;flex-wrap:wrap}
.author-link{display:inline-flex;align-items:center;gap:5px;font-size:.8rem;font-weight:700;padding:6px 14px;border-radius:7px;text-decoration:none;transition:all .15s}
.author-link-ghost{border:1.5px solid #CBD5E1;color:#475569}
.author-link-ghost:hover{border-color:#10B981;color:#059669;background:#F0FDF4}
.author-link-dark{background:#0F172A;color:white}
.author-link-dark:hover{background:#10B981;color:white}

.region-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
}
.region-badge {
  background: var(--green-surface);
  color: var(--green-dark);
  padding: 3px 12px;
  border-radius: 50px;
  font-size: .72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .05em;
  border: 1.5px solid var(--green-pale);
}

/* ===========================
   SIDEBAR STICKY
=========================== */
.sticky-sidebar { position: sticky; top: 88px; }

/* ===========================
   MISC ELEMENTS
=========================== */
.divider { height: 2px; background: var(--border-light); border: none; margin: 32px 0; }

/* Progress Indicators */
.streak-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--yellow-pale);
  border: 2px solid #FDE68A;
  color: var(--yellow-dark);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: .75rem;
  font-weight: 800;
}

/* ===========================
   CONFETTI CANVAS
=========================== */
#confetti-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 9999;
}

/* ===========================
   ANIMATIONS
=========================== */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}

@keyframes pulse-green {
  0%, 100% { box-shadow: 0 0 0 0 rgba(16,185,129,0.4); }
  50%       { box-shadow: 0 0 0 12px rgba(16,185,129,0); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-6px); }
  40%       { transform: translateX(6px); }
  60%       { transform: translateX(-4px); }
  80%       { transform: translateX(4px); }
}

@keyframes bounceIn {
  0%   { transform: scale(0.6); opacity: 0; }
  50%  { transform: scale(1.1); }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.animate-float   { animation: float 3s ease-in-out infinite; }
.animate-bounce-in { animation: bounceIn 0.5s var(--t-bounce) both; }
.animate-slide-up  { animation: slideUp 0.4s var(--t) both; }

/* ===========================
   LAYOUT HELPERS (responsive)
=========================== */
/* 2-column content + sidebar layout — collapses on tablet/mobile */
.content-with-sidebar {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 32px;
  align-items: start;
}
/* Sticky sidebar: covers both .content-with-sidebar pages and university pages (inline grid) */
.content-with-sidebar aside,
.section .container aside {
  position: sticky;
  top: 80px;
  align-self: start;
}
.content-with-sidebar aside > .calculator-wrapper,
.section .container aside > .calculator-wrapper {
  position: static !important;
  top: auto !important;
}

/* Table scroll wrapper */
.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 8px;
}

/* Generic 2-col that collapses at 600px */
.grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 600px) {
  .grid-2col { grid-template-columns: 1fr; }
}

/* Generic 3-col that collapses at 768px */
.grid-3col {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}
@media (max-width: 768px) {
  .grid-3col { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .grid-3col { grid-template-columns: 1fr; }
}

/* ===========================
   RESPONSIVE — 1024px (tablet landscape)
=========================== */
@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 2fr 1fr 1fr; gap: 36px; padding: 44px 0 36px; }
  .footer-stat { min-width: calc(33.33% - 12px); }
  .footer-stat + .footer-stat { border-left: none; }
  .footer-stats { flex-wrap: wrap; gap: 0; }
  .content-with-sidebar { grid-template-columns: 1fr 280px; gap: 24px; }
}

/* ===========================
   RESPONSIVE — 900px (tablet portrait)
=========================== */
@media (max-width: 900px) {
  .content-with-sidebar {
    grid-template-columns: 1fr;
  }
  /* un-sticky the sidebar so it flows below content */
  .content-with-sidebar aside,
  .section .container aside {
    position: static !important;
    top: auto !important;
  }
  /* University pages use inline grid — attribute selector overrides with !important */
  [style*="grid-template-columns:1fr 300px"] {
    grid-template-columns: 1fr !important;
  }
}

/* ===========================
   RESPONSIVE — 768px (mobile / tablet)
=========================== */
@media (max-width: 768px) {
  /* ── Hero */
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding: 48px 0 52px; }
  .hero-calc-card { display: none; }
  .hero-stats { gap: 14px; flex-wrap: wrap; }
  .hero h1 { font-size: clamp(1.7rem, 5vw, 2.4rem); }

  /* ── Old main-nav (dropdown-style pages) */
  .main-nav {
    display: none;
    position: fixed;
    top: 68px;
    left: 0; right: 0; bottom: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: 20px;
    overflow-y: auto;
    z-index: 999;
    border-top: 2px solid var(--border);
    box-shadow: var(--shadow-xl);
    gap: 4px;
  }
  .main-nav.open { display: flex; }
  .main-nav a, .main-nav .dropdown-toggle {
    padding: 14px 16px;
    font-size: .95rem;
    border-radius: var(--r-sm);
  }
  .dropdown-menu {
    position: static;
    box-shadow: none;
    border-radius: var(--r-sm);
    border: 2px solid var(--border);
    background: var(--surface);
    display: none;
    margin-top: 6px;
    width: 100%;
  }
  .dropdown.open .dropdown-menu { display: block; animation: none; }
  .dropdown-menu a { color: var(--text-sec); }

  /* ── Hamburger */
  .hamburger { display: flex; }

  /* ── Footer */
  .footer-top { grid-template-columns: 1fr 1fr; gap: 28px; padding: 40px 0 32px; }
  .footer-bottom { flex-direction: column; text-align: center; gap: 10px; }
  .footer-legal { flex-wrap: wrap; justify-content: center; gap: 14px; }

  /* ── Content */
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .calc-tab-content { padding: 16px !important; }
  .semester-row { grid-template-columns: 1fr 1fr; }
  .blog-grid { grid-template-columns: 1fr; }
  .section { padding: 48px 0; }
  .cta-section { padding: 52px 0; }
  .page-hero { padding: 36px 0 40px; }

  /* ── Info/content boxes */
  .info-box { padding: 14px 16px; }
  .class-row { flex-wrap: wrap; gap: 8px; }
  .class-range, .class-pct { min-width: auto; }

  /* about.html 2-col content sections — collapse to single column */
  [style*="grid-template-columns:1fr 1fr;gap:40px"],
  [style*="grid-template-columns:1fr 1fr;gap:20px"] {
    grid-template-columns: 1fr !important;
  }

  /* blog-grid inline style override */
  .blog-grid[style] { grid-template-columns: 1fr !important; }
}

/* ===========================
   RESPONSIVE — 779px (hdr-nav mobile menu)
=========================== */
@media (max-width: 779px) {
  /* ── Logo size on mobile */
  .site-logo img { height: 115px !important; width: auto !important; }

  /* ── Hide desktop CTA on all pages (not just home) */
  .hdr-cta { display: none !important; }

  /* ── Make hamburger bigger and easier to tap */
  .hamburger { padding: 10px; }
  .hamburger span { width: 24px; height: 2.5px; }

  /* New header nav (hdr-nav) — open as full-screen drawer */
  .hdr-nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0; right: 0; bottom: 0;
    background: var(--white);
    padding: 16px;
    z-index: 999;
    overflow-y: auto;
    gap: 4px;
    border-top: 2px solid var(--border);
    box-shadow: var(--shadow-xl);
    align-items: stretch;
  }
  .hdr-nav.open a {
    padding: 13px 16px !important;
    font-size: .95rem !important;
    border-radius: var(--r-sm) !important;
    display: block !important;
    color: var(--text-sec) !important;
    font-weight: 600 !important;
    border-bottom: 1px solid var(--border-light);
  }
  .hdr-nav.open a:last-child { border-bottom: none; }
  .hdr-nav.open a.active {
    background: var(--green-surface) !important;
    color: var(--green-dark) !important;
  }
  .hdr-nav.open a:hover {
    background: var(--surface) !important;
    color: var(--text) !important;
  }
}

/* ===========================
   RESPONSIVE — 600px (compact mobile)
=========================== */
@media (max-width: 600px) {
  /* ── Footer cols collapse */
  .footer-top { grid-template-columns: 1fr; gap: 24px; padding: 32px 0 24px; }
  .footer-stats { flex-wrap: wrap; }
  .footer-stat { min-width: calc(50% - 8px); border-left: none !important; border-top: 1px solid rgba(255,255,255,.06); padding: 14px 0; }
  .footer-stat:first-child { border-top: none; }
  /* Remove desktop max-widths so tagline and disclaimer fill full column */
  .footer-tagline { max-width: 100%; }
  .footer-disclaimer { max-width: 100%; }

  /* ── Prog tabs (inter calculator) */
  .prog-tabs { padding: 10px 12px; gap: 6px; }
  .prog-tab { font-size: .74rem; padding: 5px 10px; }

  /* ── Calc tabs */
  .calc-tabs { padding: 10px 12px; gap: 6px; }
  .calc-tab { font-size: .78rem; padding: 8px 8px; }

  /* ── Sections */
  .section { padding: 36px 0; }
  .section-header { margin-bottom: 28px; }
  .cta-section { padding: 40px 0; }
  .page-hero { padding: 28px 0 32px; }
  .page-hero p { font-size: .875rem; }

  /* ── Grading table */
  .grading-table th, .grading-table td { padding: 8px 10px; font-size: .8rem; }

  /* ── Breadcrumb */
  .breadcrumb-list { font-size: .75rem; gap: 5px; }

  /* ── Author card */
  .author-card { padding: 16px !important; }
  .author-bio { font-size: .82rem; }

  /* ── Result box */
  .result-box { padding: 16px; }
  .result-gpa { font-size: 2.6rem !important; }

  /* ── University page hero */
  .uni-hero-flex { flex-direction: column !important; align-items: flex-start !important; gap: 16px !important; }
  .uni-hero-flex > a { width: 100% !important; text-align: center !important; box-sizing: border-box; }

  /* ── Logo size on small phones */
  .site-logo img { height: 100px !important; }

  /* 3-col inline grids in CGPA calculator — collapse to 1 col */
  [style*="grid-template-columns:1fr 1fr 1fr;gap:16px"],
  [style*="grid-template-columns:1fr 1fr 1fr;gap:10px"] {
    grid-template-columns: 1fr !important;
  }
}

/* ===========================
   RESPONSIVE — 480px (small mobile)
=========================== */
@media (max-width: 480px) {
  /* ── Base */
  .container { padding: 0 14px; }

  /* ── Cards */
  .cards-grid, .cards-grid-3 { grid-template-columns: 1fr; }
  .cards-grid-4 { grid-template-columns: 1fr 1fr; }

  /* ── University grid */
  .uni-grid { grid-template-columns: 1fr 1fr; }

  /* ── Hero */
  .hero-stats { justify-content: center; }
  .stat-num { font-size: 1.4rem; }

  /* ── Subject rows (matric/inter calc) */
  .subject-row {
    grid-template-columns: 1fr 68px 68px 30px !important;
    gap: 4px !important;
    padding: 8px !important;
  }
  .subject-row input[type="text"] { font-size: .8rem !important; }
  .subject-row input[type="number"] { font-size: .8rem !important; }

  /* ── Semester row */
  .semester-row { grid-template-columns: 1fr; gap: 8px; }

  /* ── Buttons */
  .btn-lg { padding: 13px 24px; font-size: .95rem; }
  .btn-xl { padding: 14px 28px; font-size: 1rem; }

  /* ── Result */
  .result-gpa { font-size: 2.2rem !important; }

  /* ── Grading table */
  .grading-table th, .grading-table td { padding: 7px 8px; font-size: .76rem; }

  /* ── Footer bottom */
  .footer-bottom { padding: 14px 0; }
  .footer-copy { font-size: .75rem; }
  .footer-legal { gap: 10px; }
  .footer-legal a { font-size: .72rem; }

  /* ── Nav */
  .nav-inner { padding: 0 14px; }

  /* ── Page hero */
  .page-hero { padding: 22px 0 26px; }

  /* ── FAQ */
  .faq-question { font-size: .88rem; padding: 14px 16px; }

  /* ── Author */
  .author-card { flex-direction: column; gap: 12px; }
  .author-avatar { width: 60px; height: 60px; font-size: 1.2rem; }
}

/* ===========================
   RESPONSIVE — 380px (very small phones)
=========================== */
@media (max-width: 380px) {
  .container { padding: 0 12px; }
  .uni-grid { grid-template-columns: 1fr 1fr; }
  .cards-grid-4 { grid-template-columns: 1fr; }
  .prog-tab { font-size: .7rem; padding: 4px 8px; }
  .subject-row {
    grid-template-columns: 1fr 60px 60px 26px !important;
    gap: 3px !important;
  }
  .footer-stat { min-width: 100%; }
}

/* ===========================
   PRINT
=========================== */
@media print {
  .site-header, .hero, .cta-section, .site-footer, .calc-actions, .breadcrumb { display: none !important; }
  .result-box { display: block !important; border: 2px solid #000; }
  .result-gpa { -webkit-text-fill-color: #000; color: #000; }
}