/* ============================================================
   CGPA to Percentage Calculator — style.css
   Site: arrownews24.com
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;500;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&display=swap');

/* ── CSS VARIABLES ── */
:root {
  --font-head: 'Sora', sans-serif;
  --font-body: 'DM Sans', sans-serif;

  /* Dark theme (default) */
  --bg:        #0a0f1e;
  --bg2:       #0f1628;
  --surface:   #141d35;
  --surface2:  #1a2440;
  --border:    rgba(99,179,237,0.12);
  --text:      #e8f0ff;
  --text2:     #a8b8d8;
  --muted:     #5a6a8a;

  --accent:    #4f8ef7;
  --accent2:   #7c3aed;
  --accent3:   #06b6d4;
  --green:     #10b981;
  --yellow:    #f59e0b;
  --red:       #ef4444;

  --radius:    14px;
  --radius-sm: 8px;
  --shadow:    0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 48px rgba(0,0,0,0.6);
  --glow:      0 0 32px rgba(79,142,247,0.2);
}

[data-theme="light"] {
  --bg:        #f0f4ff;
  --bg2:       #e8edf8;
  --surface:   #ffffff;
  --surface2:  #f5f7ff;
  --border:    rgba(79,142,247,0.15);
  --text:      #1a2040;
  --text2:     #3a4a70;
  --muted:     #7a8aaa;
  --shadow:    0 4px 24px rgba(79,142,247,0.1);
  --shadow-lg: 0 8px 48px rgba(79,142,247,0.15);
  --glow:      0 0 32px rgba(79,142,247,0.1);
}

/* ── RESET ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  transition: background 0.3s, color 0.3s;
  overflow-x: hidden;
}

/* ── BG MESH ── */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: -1;
  background:
    radial-gradient(ellipse 80% 50% at 20% 10%, rgba(79,142,247,0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(124,58,237,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 40% 30% at 60% 30%, rgba(6,182,212,0.05) 0%, transparent 50%);
  pointer-events: none;
}
[data-theme="light"] body::before {
  background:
    radial-gradient(ellipse 80% 50% at 20% 10%, rgba(79,142,247,0.06) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(124,58,237,0.04) 0%, transparent 60%);
}

/* ── TYPOGRAPHY ── */
h1,h2,h3,h4 { font-family: var(--font-head); font-weight: 700; line-height: 1.25; }
h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h2 { font-size: clamp(1.3rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
p  { color: var(--text2); }
a  { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent3); }

/* ── LAYOUT ── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 clamp(16px,4vw,48px); }
.section { padding: 64px 0; }

/* ── HEADER ── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,15,30,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 clamp(16px,4vw,48px);
  transition: background 0.3s;
}
[data-theme="light"] .site-header {
  background: rgba(240,244,255,0.85);
}
.nav-inner {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; gap: 24px;
}
.brand-logo {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; flex-shrink: 0;
}
.brand-icon {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; font-weight: 900;
}
.brand-name {
  font-family: var(--font-head); font-weight: 800;
  font-size: 1.05rem; color: var(--text);
}
.brand-name span { color: var(--accent); }

.nav-links {
  display: flex; align-items: center; gap: 6px; list-style: none;
}
.nav-links a {
  color: var(--text2); font-size: 0.88rem; font-weight: 500;
  padding: 6px 12px; border-radius: 8px;
  transition: all 0.2s; text-decoration: none;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--accent);
  background: rgba(79,142,247,0.1);
}

.nav-right { display: flex; align-items: center; gap: 12px; }

/* Theme Toggle */
.theme-toggle { position: relative; width: 56px; height: 28px; cursor: pointer; flex-shrink: 0; }
.theme-toggle input { display: none; }
.toggle-track {
  width: 100%; height: 100%;
  background: var(--surface2);
  border-radius: 99px;
  display: flex; align-items: center; padding: 3px;
  transition: background 0.3s;
  border: 1px solid var(--border);
}
.toggle-thumb {
  width: 22px; height: 22px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  transition: transform 0.35s cubic-bezier(.34,1.56,.64,1);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px;
  box-shadow: 0 2px 8px rgba(79,142,247,0.4);
}
[data-theme="light"] .toggle-thumb { transform: translateX(28px); }

/* Hamburger */
.hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text2); border-radius: 2px;
  transition: all 0.3s;
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* Mobile Nav */
.mobile-nav {
  display: none; position: fixed; inset: 64px 0 0 0; z-index: 99;
  background: var(--bg2);
  flex-direction: column; padding: 24px;
  gap: 8px; overflow-y: auto;
  border-top: 1px solid var(--border);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  color: var(--text2); font-size: 1rem; font-weight: 500;
  padding: 12px 16px; border-radius: 10px;
  transition: all 0.2s; text-decoration: none;
  border: 1px solid transparent;
}
.mobile-nav a:hover {
  color: var(--accent);
  background: rgba(79,142,247,0.08);
  border-color: var(--border);
}

/* ── HERO / TOOL AREA ── */
.hero {
  padding: 60px 0 40px;
  text-align: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(79,142,247,0.1);
  border: 1px solid rgba(79,142,247,0.25);
  border-radius: 99px; padding: 6px 16px;
  font-size: 0.8rem; font-weight: 600;
  color: var(--accent); margin-bottom: 20px;
  letter-spacing: 0.05em;
}
.hero h1 { margin-bottom: 16px; }
.hero h1 span { 
  background: linear-gradient(135deg, var(--accent), var(--accent3));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p { font-size: 1.05rem; max-width: 600px; margin: 0 auto 32px; }

/* ── TOOL CARD ── */
.tool-wrapper {
  max-width: 860px; margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow-lg), var(--glow);
  overflow: hidden;
}

/* Tab switcher */
.tool-tabs {
  display: flex;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
}
.tool-tab {
  flex: 1; padding: 14px 20px;
  background: none; border: none;
  font-family: var(--font-body); font-size: 0.9rem; font-weight: 600;
  color: var(--muted); cursor: pointer;
  transition: all 0.25s;
  border-bottom: 2px solid transparent;
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.tool-tab:hover { color: var(--text2); background: rgba(79,142,247,0.04); }
.tool-tab.active { color: var(--accent); border-bottom-color: var(--accent); background: rgba(79,142,247,0.06); }

.tool-body { padding: clamp(20px,4vw,40px); }

/* Inputs */
.form-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 20px; margin-bottom: 24px;
}
.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group label {
  font-size: 0.82rem; font-weight: 600;
  color: var(--text2); letter-spacing: 0.05em; text-transform: uppercase;
}
.form-group input,
.form-group select {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-body); font-size: 1rem;
  padding: 12px 16px;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none; width: 100%;
  -webkit-appearance: none;
}
.form-group input:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79,142,247,0.15);
}
.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%234f8ef7' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px; cursor: pointer;
}
.form-group select option { background: var(--bg2); color: var(--text); }

.full-width { grid-column: 1 / -1; }

/* SGPA rows */
.sgpa-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; margin-bottom: 20px; }
.sgpa-item { display: flex; flex-direction: column; gap: 6px; }
.sgpa-item label { font-size: 0.75rem; color: var(--muted); font-weight: 600; }
.sgpa-item input { font-size: 0.9rem; padding: 10px 12px; }

/* Custom formula */
.custom-formula-box {
  background: rgba(79,142,247,0.05);
  border: 1px dashed rgba(79,142,247,0.3);
  border-radius: var(--radius-sm);
  padding: 16px; margin-bottom: 20px;
  display: none;
}
.custom-formula-box.show { display: block; }
.custom-formula-box label { font-size: 0.8rem; color: var(--text2); font-weight: 600; margin-bottom: 8px; display: block; }
.formula-hint { font-size: 0.75rem; color: var(--muted); margin-top: 8px; }

/* Calc button */
.calc-btn {
  width: 100%; padding: 15px 24px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border: none; border-radius: var(--radius-sm);
  color: #fff; font-family: var(--font-head);
  font-size: 1rem; font-weight: 700;
  cursor: pointer; transition: all 0.25s;
  box-shadow: 0 4px 20px rgba(79,142,247,0.35);
  letter-spacing: 0.03em;
  display: flex; align-items: center; justify-content: center; gap: 10px;
}
.calc-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(79,142,247,0.45);
}
.calc-btn:active { transform: translateY(0); }

/* ── RESULT BOX ── */
.result-box {
  margin-top: 28px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: none;
}
.result-box.show { display: block; animation: fadeUp 0.4s ease; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.result-main {
  text-align: center; margin-bottom: 24px;
}
.result-percentage {
  font-family: var(--font-head); font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent3));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1; margin-bottom: 6px;
}
.result-label { font-size: 0.85rem; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; }
.result-formula { font-size: 0.82rem; color: var(--muted); margin-top: 8px; }

/* Grade badge */
.grade-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 20px; border-radius: 99px;
  font-family: var(--font-head); font-weight: 700; font-size: 0.9rem;
  margin-top: 12px;
}
.grade-O  { background: rgba(16,185,129,0.15); color: #10b981; border: 1px solid rgba(16,185,129,0.3); }
.grade-A  { background: rgba(79,142,247,0.15); color: var(--accent); border: 1px solid rgba(79,142,247,0.3); }
.grade-B  { background: rgba(245,158,11,0.15); color: var(--yellow); border: 1px solid rgba(245,158,11,0.3); }
.grade-C  { background: rgba(239,68,68,0.15);  color: var(--red);    border: 1px solid rgba(239,68,68,0.3); }

/* Gauge */
.gauge-wrap { margin: 20px 0; }
.gauge-label {
  display: flex; justify-content: space-between;
  font-size: 0.75rem; color: var(--muted); margin-bottom: 8px;
}
.gauge-track {
  height: 10px; background: var(--surface2);
  border-radius: 99px; overflow: hidden;
}
.gauge-fill {
  height: 100%; border-radius: 99px;
  background: linear-gradient(90deg, var(--red) 0%, var(--yellow) 45%, var(--accent) 70%, var(--green) 100%);
  transition: width 1s cubic-bezier(.34,1.2,.64,1);
  width: 0;
}

/* Result grid */
.result-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 12px; margin-bottom: 20px;
}
.result-stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}
.result-stat .stat-label { font-size: 0.72rem; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.07em; margin-bottom: 4px; }
.result-stat .stat-val   { font-family: var(--font-head); font-size: 1.1rem; font-weight: 700; color: var(--text); }

/* Action buttons */
.result-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.btn-action {
  flex: 1; min-width: 120px; padding: 10px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text2); font-family: var(--font-body);
  font-size: 0.85rem; font-weight: 600;
  cursor: pointer; transition: all 0.2s;
  display: flex; align-items: center; justify-content: center; gap: 7px;
}
.btn-action:hover { border-color: var(--accent); color: var(--accent); background: rgba(79,142,247,0.08); }
.btn-action.primary { background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff; border-color: transparent; }
.btn-action.primary:hover { opacity: 0.9; transform: translateY(-1px); }

/* ── TOOL GUIDE ── */
.tool-guide {
  max-width: 860px; margin: 40px auto 0;
}
.guide-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.guide-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: border-color 0.2s, transform 0.2s;
}
.guide-card:hover { border-color: rgba(79,142,247,0.4); transform: translateY(-3px); }
.guide-card .guide-num {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-head); font-size: 0.9rem; font-weight: 800; color: #fff;
  margin-bottom: 14px;
}
.guide-card h4 { font-size: 0.95rem; margin-bottom: 8px; }
.guide-card p  { font-size: 0.82rem; color: var(--muted); line-height: 1.6; }

/* ── FORMULA TABLE ── */
.formula-section { padding: 64px 0; }
.section-title { text-align: center; margin-bottom: 40px; }
.section-title .eyebrow {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 10px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow);
}
table {
  width: 100%; border-collapse: collapse;
  font-size: 0.88rem;
}
thead { background: var(--surface2); }
thead th {
  padding: 14px 18px; text-align: left;
  font-family: var(--font-head); font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent);
  border-bottom: 1px solid var(--border);
}
tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: rgba(79,142,247,0.04); }
tbody td { padding: 13px 18px; color: var(--text2); }
tbody td:first-child { color: var(--text); font-weight: 600; }
.formula-code {
  font-family: 'Courier New', monospace;
  background: rgba(79,142,247,0.1);
  border: 1px solid rgba(79,142,247,0.2);
  padding: 3px 8px; border-radius: 5px;
  font-size: 0.82rem; color: var(--accent);
}

/* ── CGPA TABLE (1-10) ── */
.cgpa-table-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(160px,1fr));
  gap: 8px;
}
.cgpa-row {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  display: flex; justify-content: space-between; align-items: center;
  transition: border-color 0.2s;
}
.cgpa-row:hover { border-color: var(--accent); }
.cgpa-val { font-family: var(--font-head); font-weight: 700; color: var(--text); }
.pct-val  { font-weight: 600; color: var(--accent); font-size: 0.95rem; }

/* ── ARTICLE ── */
.article-section { max-width: 820px; margin: 0 auto; padding: 64px 0; }
.article-section h2 { margin: 36px 0 14px; }
.article-section h3 { margin: 28px 0 10px; color: var(--accent); }
.article-section p  { margin-bottom: 14px; line-height: 1.75; }
.article-section ul,
.article-section ol { padding-left: 22px; margin-bottom: 14px; }
.article-section li { color: var(--text2); margin-bottom: 8px; line-height: 1.7; }
.article-section li strong { color: var(--text); }
.article-section blockquote {
  border-left: 3px solid var(--accent);
  background: rgba(79,142,247,0.06);
  padding: 12px 18px; border-radius: 0 8px 8px 0;
  margin: 16px 0; font-size: 0.92rem;
}
.article-section hr { border: none; border-top: 1px solid var(--border); margin: 36px 0; }
.formula-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px; text-align: center; margin: 20px 0;
  font-family: var(--font-head); font-size: 1.1rem; color: var(--text);
}
.formula-box span { color: var(--accent); }

/* ── FAQ ── */
.faq-section { padding: 64px 0; max-width: 820px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color 0.2s;
}
.faq-item.open { border-color: rgba(79,142,247,0.35); }
.faq-q {
  width: 100%; background: var(--surface);
  border: none; padding: 18px 24px;
  text-align: left; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  font-family: var(--font-body); font-size: 0.95rem; font-weight: 600;
  color: var(--text); transition: background 0.2s;
}
.faq-q:hover { background: var(--surface2); }
.faq-icon {
  width: 22px; height: 22px; flex-shrink: 0;
  border-radius: 50%; background: rgba(79,142,247,0.12);
  border: 1px solid rgba(79,142,247,0.25);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; color: var(--accent);
  transition: transform 0.3s, background 0.2s;
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--accent); color: #fff; }
.faq-a {
  max-height: 0; overflow: hidden;
  background: var(--surface2);
  transition: max-height 0.4s ease, padding 0.3s;
  padding: 0 24px; color: var(--text2); font-size: 0.9rem; line-height: 1.7;
}
.faq-item.open .faq-a { max-height: 400px; padding: 16px 24px; }

/* ── ADSENSE PLACEHOLDER ── */
.ad-slot {
  max-width: 860px; margin: 32px auto;
  text-align: center;
}

/* ── INNER PAGE ── */
.inner-hero { padding: 60px 0 40px; }
.inner-hero h1 { margin-bottom: 14px; }
.inner-hero p  { max-width: 600px; }

.page-content { max-width: 820px; margin: 0 auto; padding: 0 0 64px; }
.page-content h2 { margin: 36px 0 14px; }
.page-content h3 { margin: 24px 0 10px; color: var(--accent); }
.page-content p  { margin-bottom: 14px; line-height: 1.75; }
.page-content ul,
.page-content ol { padding-left: 22px; margin-bottom: 14px; }
.page-content li { color: var(--text2); margin-bottom: 8px; line-height: 1.7; }
.page-content a  { color: var(--accent); }

/* Contact form */
.contact-form { max-width: 560px; }
.contact-form .form-group { margin-bottom: 18px; }
.contact-form label { display: block; font-size: 0.82rem; font-weight: 600; color: var(--text2); margin-bottom: 8px; }
.contact-form input,
.contact-form textarea {
  width: 100%; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text); font-family: var(--font-body); font-size: 0.95rem;
  padding: 12px 16px; outline: none; transition: border-color 0.2s, box-shadow 0.2s;
}
.contact-form textarea { resize: vertical; min-height: 130px; }
.contact-form input:focus,
.contact-form textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(79,142,247,0.15); }
.contact-form .submit-btn {
  padding: 13px 32px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border: none; border-radius: var(--radius-sm);
  color: #fff; font-family: var(--font-head); font-size: 0.95rem; font-weight: 700;
  cursor: pointer; transition: all 0.25s;
  box-shadow: 0 4px 16px rgba(79,142,247,0.3);
}
.contact-form .submit-btn:hover { opacity: 0.9; transform: translateY(-1px); }

/* ── FOOTER ── */
.site-footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 60px clamp(16px,4vw,48px) 0;
  margin-top: 80px;
  font-family: var(--font-body);
}
.footer-top {
  max-width: 1100px; margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px; padding-bottom: 48px;
}
.footer-brand .brand-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; margin-bottom: 16px; }
.footer-brand p { color: var(--text2); font-size: 0.88rem; line-height: 1.7; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; flex-wrap: wrap; }
.social-btn {
  width: 42px; height: 42px; border-radius: 10px;
  background: var(--surface2); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; text-decoration: none;
  transition: all 0.25s; cursor: pointer;
}
.social-btn:hover { background: rgba(79,142,247,0.12); border-color: rgba(79,142,247,0.35); transform: translateY(-3px); }
.footer-col h4 {
  font-family: var(--font-head); font-size: 0.76rem;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 18px;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: var(--text2); text-decoration: none; font-size: 0.88rem; transition: color 0.2s; }
.footer-col ul a:hover { color: var(--accent); }
.footer-bottom-bar {
  max-width: 1100px; margin: 0 auto;
  border-top: 1px solid var(--border);
  padding: 20px 0;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
}
.footer-bottom-bar p { color: var(--muted); font-size: 0.82rem; }
.footer-bottom-bar a { color: var(--accent); text-decoration: none; }
.footer-bottom-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-bottom-links a { color: var(--muted); text-decoration: none; font-size: 0.82rem; transition: color 0.2s; }
.footer-bottom-links a:hover { color: var(--accent); }
.footer-privacy-note {
  max-width: 1100px; margin: 0 auto;
  padding: 16px 0 24px;
  border-top: 1px solid var(--border);
}
.footer-privacy-note p { color: var(--muted); font-size: 0.78rem; line-height: 1.65; text-align: center; }
.footer-privacy-note strong { color: var(--text2); }

/* ── REVEAL ANIMATION ── */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── TOAST ── */
.toast {
  position: fixed; bottom: 28px; right: 28px; z-index: 999;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  box-shadow: var(--shadow);
  font-size: 0.88rem; color: var(--text);
  display: flex; align-items: center; gap: 10px;
  transform: translateY(80px); opacity: 0;
  transition: all 0.35s cubic-bezier(.34,1.3,.64,1);
}
.toast.show { transform: translateY(0); opacity: 1; }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .form-grid { grid-template-columns: 1fr; }
  .sgpa-grid { grid-template-columns: repeat(2,1fr); }
  .result-grid { grid-template-columns: 1fr; }
  .guide-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 520px) {
  .tool-tab span.tab-label { display: none; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom-bar { flex-direction: column; text-align: center; }
  .cgpa-table-grid { grid-template-columns: repeat(2,1fr); }
}