/* =========================================================
   EDUPIDIA — STYLESHEET v2.0 (Premium SaaS Upgrade)
   Structure:
   1. CSS Variables (Design Tokens)
   2. Reset & Base
   3. Utilities & Buttons
   4. Announcement Bar
   5. Navbar
   6. Hero
   7. Stats
   8. Tools Grid
   9. Why / Features
   10. Categories
   11. Timeline (Updates)
   12. FAQ Accordion
   13. CTA
   14. Footer
   15. Modal
   16. Back to Top
   17. Animations & Scroll Reveal
   18. Responsive Breakpoints
   ========================================================= */

/* =========================================================
   1. CSS VARIABLES
   ========================================================= */
:root {
  /* Backgrounds — pure white base, no blue tint */
  --bg:          #FAFAFA;
  --bg-alt:      #F4F6F9;
  --bg-soft:     #FFFFFF;

  /* Surfaces */
  --card:        #FFFFFF;
  --card-glass:  rgba(255, 255, 255, 0.72);
  --card-border: #E8ECF2;

  /* Brand */
  --primary:       #4F6EF7;
  --primary-dark:  #3451D1;
  --primary-light: #EEF1FF;
  --accent:        #818CF8;
  --accent-2:      #A78BFA;
  --gradient-hero: linear-gradient(135deg, #4F6EF7 0%, #A78BFA 100%);

  /* Text */
  --text:          #0F172A;
  --text-muted:    #64748B;
  --text-faint:    #94A3B8;
  --text-on-dark:  #FFFFFF;

  /* Status colours */
  --success:    #10B981;
  --success-bg: #ECFDF5;
  --warning:    #F59E0B;
  --warning-bg: #FFFBEB;
  --purple:     #7C3AED;
  --purple-bg:  #F5F3FF;
  --info:       #4F6EF7;
  --info-bg:    #EEF1FF;

  /* Shadows — lighter, not heavy */
  --shadow-xs:      0 1px 3px rgba(15,23,42,0.05);
  --shadow-sm:      0 2px 8px  rgba(15,23,42,0.07);
  --shadow-md:      0 8px 24px rgba(15,23,42,0.09);
  --shadow-lg:      0 20px 48px rgba(15,23,42,0.11);
  --shadow-primary: 0 8px 28px rgba(79,110,247,0.30);
  --shadow-glow:    0 0 0 3px rgba(79,110,247,0.18);

  /* Radius */
  --radius-sm:   8px;
  --radius-md:   14px;
  --radius-lg:   20px;
  --radius-xl:   28px;
  --radius-pill: 999px;

  /* Typography */
  --font-display: 'Plus Jakarta Sans', sans-serif;
  --font-body:    'Inter', sans-serif;

  /* Layout */
  --container-width: 1240px;
  --nav-height:      68px;
  --announce-height: 38px;

  /* Motion */
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out:    cubic-bezier(0.22, 1, 0.36, 1);
  --t-fast:  0.16s ease;
  --t-med:   0.28s var(--ease-out);
  --t-slow:  0.48s var(--ease-out);
}

/* =========================================================
   2. RESET & BASE
   ========================================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
  letter-spacing: -0.02em;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: var(--font-body); cursor: pointer; border: none; background: none; color: inherit; }
ul { list-style: none; }

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 12px;
  background: var(--primary);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  z-index: 9999;
  transition: top var(--t-fast);
  font-weight: 600;
}
.skip-link:focus { top: 12px; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* =========================================================
   3. UTILITIES & BUTTONS
   ========================================================= */
.section-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}
.section-container-narrow { max-width: 740px; }

section { padding: 96px 0; }

.text-gradient {
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-light);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
  border: 1px solid rgba(79,110,247,0.15);
}

.section-heading {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 56px;
}
.section-heading h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-bottom: 14px;
}
.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.925rem;
  padding: 13px 24px;
  border-radius: var(--radius-pill);
  transition:
    transform var(--t-fast),
    box-shadow var(--t-fast),
    background var(--t-fast),
    border-color var(--t-fast);
  white-space: nowrap;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--t-fast);
  border-radius: inherit;
}
.btn:hover::after { background: rgba(255,255,255,0.08); }

.btn-sm  { padding: 9px 18px;  font-size: 0.875rem; }
.btn-lg  { padding: 15px 32px; font-size: 1rem; }

.btn-primary {
  background: var(--gradient-hero);
  color: #fff;
  box-shadow: var(--shadow-primary);
  border: 1px solid transparent;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(79,110,247,0.38);
}
.btn-primary:active { transform: translateY(0); }

.btn-outline {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--card-border);
  box-shadow: var(--shadow-xs);
}
.btn-outline:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: rgba(79,110,247,0.3);
}

.btn-white {
  background: #fff;
  color: var(--primary-dark);
  border: 1px solid rgba(255,255,255,0.3);
  box-shadow: 0 4px 16px rgba(0,0,0,0.14);
}
.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0,0,0,0.20);
}

/* =========================================================
   4. ANNOUNCEMENT BAR
   ========================================================= */
.announce-bar {
  height: var(--announce-height);
  background: linear-gradient(90deg, #1E40AF, #4F6EF7, #7C3AED);
  background-size: 200% 100%;
  animation: gradientShift 6s ease infinite;
  color: #fff;
  overflow: hidden;
  display: flex;
  align-items: center;
}

@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.announce-track {
  display: flex;
  gap: 64px;
  white-space: nowrap;
  animation: marquee 26s linear infinite;
  padding-left: 100%;
}
.announce-item {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  opacity: 0.95;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* =========================================================
   5. NAVBAR
   ========================================================= */
.navbar {
  position: sticky;
  top: 0;
  z-index: 500;
  height: var(--nav-height);
  background: rgba(250, 250, 250, 0.82);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(232, 236, 242, 0.7);
  transition: box-shadow var(--t-med), background var(--t-med);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 1px 0 rgba(15,23,42,0.06), 0 4px 20px rgba(15,23,42,0.06);
}

.nav-container {
  max-width: var(--container-width);
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.18rem;
  color: var(--text);
  flex-shrink: 0;
  letter-spacing: -0.02em;
}
.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--gradient-hero);
  color: #fff;
  font-size: 1rem;
  font-weight: 800;
  box-shadow: var(--shadow-primary);
  flex-shrink: 0;
}
.logo-mark-lg {
  width: 70px;
  height: 70px;
  font-size: 2rem;
  border-radius: 18px;
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  padding: 8px 13px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: background var(--t-fast), color var(--t-fast);
  white-space: nowrap;
  position: relative;
}
.nav-link:hover {
  color: var(--text);
  background: var(--bg-alt);
}
.nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
  font-weight: 600;
}

/* Nav actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  padding: 8px;
  transition: background var(--t-fast);
}
.hamburger:hover { background: var(--bg-alt); }

.hamburger span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--t-med), opacity var(--t-fast), width var(--t-fast);
  display: block;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; width: 14px; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,0.25);
  backdrop-filter: blur(2px);
  z-index: 498;
  opacity: 0;
  transition: opacity var(--t-med);
}
.nav-overlay.active { display: block; opacity: 1; }

/* =========================================================
   6. HERO
   ========================================================= */
.hero {
  position: relative;
  padding: 88px 0 72px;
  overflow: hidden;
  background: var(--bg);
}

/* Subtle grid background */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(79,110,247,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,110,247,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
}
.blob-1 {
  width: 520px; height: 520px;
  background: radial-gradient(circle, rgba(79,110,247,0.14), transparent 70%);
  top: -180px; right: -80px;
}
.blob-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(167,139,250,0.12), transparent 70%);
  bottom: -120px; left: -80px;
}

.hero-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 1;
}

/* Hero left */
.hero-left { display: flex; flex-direction: column; }

.badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  background: var(--card-glass);
  backdrop-filter: blur(8px);
  border: 1px solid var(--card-border);
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  box-shadow: var(--shadow-xs);
  margin-bottom: 24px;
  gap: 8px;
}
.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 3px var(--success-bg);
  display: inline-block;
  flex-shrink: 0;
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  margin-bottom: 22px;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: 1.08rem;
  color: var(--text-muted);
  max-width: 500px;
  margin-bottom: 36px;
  line-height: 1.75;
}

/* Search bar */
.hero-search {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card);
  border: 1.5px solid var(--card-border);
  border-radius: var(--radius-pill);
  padding: 6px 6px 6px 18px;
  box-shadow: var(--shadow-md), 0 0 0 0 rgba(79,110,247,0);
  max-width: 480px;
  margin-bottom: 28px;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.hero-search:focus-within {
  border-color: var(--primary);
  box-shadow: var(--shadow-md), 0 0 0 3px rgba(79,110,247,0.12);
}

.search-icon { color: var(--text-faint); flex-shrink: 0; }

.hero-search input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 0.925rem;
  font-family: var(--font-body);
  background: transparent;
  padding: 10px 0;
  color: var(--text);
  min-width: 0;
}
.hero-search input::placeholder { color: var(--text-faint); }

/* CTA row */
.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  align-items: center;
}

/* Trust badges */
.trust-badges {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  align-items: center;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Hero right — illustration */
.hero-right { position: relative; }

.hero-illustration {
  position: relative;
  height: 460px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-glow {
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79,110,247,0.15), transparent 70%);
}

.hero-core {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 130px;
  height: 130px;
  border-radius: 30px;
  background: var(--gradient-hero);
  box-shadow: var(--shadow-primary), 0 0 0 12px rgba(79,110,247,0.08), 0 0 0 28px rgba(79,110,247,0.04);
}

/* Float cards */
.float-card {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(232,236,242,0.8);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  box-shadow: var(--shadow-md);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  animation: float 5s ease-in-out infinite;
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}
.float-card:hover {
  box-shadow: var(--shadow-lg);
  z-index: 2;
}
.fc-icon { font-size: 1.4rem; }

.fc-1 { top: 4%;   left: 2%;   animation-delay: 0s; }
.fc-2 { top: 12%;  right: 1%;  animation-delay: 1.1s; }
.fc-3 { bottom: 28%; left: -4%; animation-delay: 2.2s; }
.fc-4 { bottom: 6%;  right: 10%; animation-delay: 0.6s; }
.fc-5 { top: 45%;  right: -6%; animation-delay: 1.7s; }

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-14px); }
}

/* =========================================================
   7. STATS
   ========================================================= */
.stats-section { padding: 0 0 96px; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 32px 20px 28px;
  text-align: center;
  box-shadow: var(--shadow-xs);
  transition: transform var(--t-med), box-shadow var(--t-med), border-color var(--t-med);
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-hero);
  opacity: 0;
  transition: opacity var(--t-med);
}
.stat-card:hover::before { opacity: 1; }
.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(79,110,247,0.2);
}

.stat-icon {
  font-size: 1.6rem;
  margin-bottom: 12px;
  display: block;
}

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 2.6rem);
  font-weight: 800;
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 6px;
  letter-spacing: -0.03em;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
}

/* =========================================================
   8. TOOLS GRID
   ========================================================= */
.tools-section { background: var(--bg-alt); }

.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.tool-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-xs);
  transition:
    transform var(--t-med),
    box-shadow var(--t-med),
    border-color var(--t-med);
  display: flex;
  flex-direction: column;
}

/* Gradient border on hover via pseudo element */
.tool-card::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: calc(var(--radius-lg) + 1px);
  background: var(--gradient-hero);
  opacity: 0;
  transition: opacity var(--t-med);
  z-index: -1;
}
.tool-card:hover::before { opacity: 1; }
.tool-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg), 0 0 0 0 transparent;
  border-color: transparent;
}

/* Card glow on hover */
.tool-card::after {
  content: '';
  position: absolute;
  bottom: -20px; left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 30px;
  background: rgba(79,110,247,0.18);
  filter: blur(16px);
  border-radius: 50%;
  opacity: 0;
  transition: opacity var(--t-med);
  z-index: -2;
}
.tool-card:hover::after { opacity: 1; }

/* Tool badge */
.tool-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}
.badge-new      { background: var(--success-bg); color: var(--success); }
.badge-popular  { background: var(--warning-bg); color: var(--warning); }
.badge-featured { background: var(--purple-bg);  color: var(--purple); }
.badge-soon     { background: var(--bg-alt); color: var(--text-faint); border: 1px solid var(--card-border); }

/* Tool icon */
.tool-icon {
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--icon-bg, var(--primary-light));
  font-size: 1.5rem;
  margin-bottom: 18px;
  flex-shrink: 0;
  transition: transform var(--t-med);
}
.tool-card:hover .tool-icon { transform: scale(1.08) rotate(-3deg); }

.tool-title {
  font-size: 1.05rem;
  margin-bottom: 8px;
  font-weight: 700;
}

.tool-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 20px;
  flex: 1;
  line-height: 1.6;
}

.tool-link {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--t-fast), color var(--t-fast);
  margin-top: auto;
}
.tool-link:hover { gap: 10px; }
.tool-card.is-soon { opacity: 0.85; }
.tool-card.is-soon .tool-link { color: var(--text-faint); }
.tool-card.is-soon:hover::before { opacity: 0; }
.tool-card.is-soon:hover { transform: none; }

.tools-cta { text-align: center; margin-top: 48px; }

/* =========================================================
   9. WHY / FEATURES
   ========================================================= */
.why-section { background: var(--bg); }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  box-shadow: var(--shadow-xs);
  transition: transform var(--t-med), box-shadow var(--t-med);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-hero);
  transform: scaleX(0);
  transition: transform var(--t-med);
  transform-origin: left;
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

/* Feature icons — each card gets a unique accent */
.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-size: 1.3rem;
  margin-bottom: 18px;
  flex-shrink: 0;
}
.feature-card:nth-child(1) .feature-icon { background: #FFF7ED; }
.feature-card:nth-child(2) .feature-icon { background: #ECFDF5; }
.feature-card:nth-child(3) .feature-icon { background: #EFF6FF; }
.feature-card:nth-child(4) .feature-icon { background: #FDF4FF; }
.feature-card:nth-child(5) .feature-icon { background: #ECFDF5; }
.feature-card:nth-child(6) .feature-icon { background: var(--primary-light); }

.feature-card h3 { font-size: 1rem; margin-bottom: 8px; }
.feature-card p  { color: var(--text-muted); font-size: 0.9rem; line-height: 1.65; }

/* =========================================================
   10. CATEGORIES
   ========================================================= */
.categories-section { background: var(--bg-alt); }

.category-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
}

.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 22px 10px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
  transition:
    transform var(--t-med),
    box-shadow var(--t-med),
    background var(--t-med),
    color var(--t-med),
    border-color var(--t-med);
}
.category-card:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: var(--shadow-md);
  background: var(--primary-light);
  color: var(--primary);
  border-color: rgba(79,110,247,0.25);
}
.cat-icon {
  font-size: 1.5rem;
  transition: transform var(--t-med);
}
.category-card:hover .cat-icon { transform: scale(1.15) rotate(-5deg); }

/* =========================================================
   11. TIMELINE (LATEST UPDATES)
   ========================================================= */
.updates-section { background: var(--bg); }

.timeline {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.timeline-item {
  display: flex;
  gap: 16px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  box-shadow: var(--shadow-xs);
  transition: transform var(--t-med), box-shadow var(--t-med), border-color var(--t-med);
}
.timeline-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(79,110,247,0.18);
}

.timeline-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-top: 8px;
  flex-shrink: 0;
  position: relative;
}
.dot-live {
  background: var(--success);
  box-shadow: 0 0 0 4px var(--success-bg);
}
.dot-live::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 1.5px solid var(--success);
  opacity: 0.5;
  animation: ripple 2s ease-out infinite;
}
@keyframes ripple {
  0%   { transform: scale(1); opacity: 0.5; }
  100% { transform: scale(2.5); opacity: 0; }
}
.dot-upcoming { background: var(--warning); box-shadow: 0 0 0 4px var(--warning-bg); }

.timeline-tag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  margin-bottom: 8px;
}
.tag-live     { background: var(--success-bg); color: var(--success); }
.tag-upcoming { background: var(--warning-bg); color: var(--warning); }

.timeline-content h3 { font-size: 0.975rem; margin-bottom: 5px; font-weight: 600; }
.timeline-content p  { color: var(--text-muted); font-size: 0.87rem; line-height: 1.6; }

/* =========================================================
   12. FAQ ACCORDION
   ========================================================= */
.faq-section { background: var(--bg-alt); }

.accordion-item {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  overflow: hidden;
  transition: box-shadow var(--t-med), border-color var(--t-med);
}
.accordion-item:hover { box-shadow: var(--shadow-sm); }
.accordion-item.open {
  border-color: rgba(79,110,247,0.25);
  box-shadow: var(--shadow-sm);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.975rem;
  text-align: left;
  color: var(--text);
  transition: color var(--t-fast);
}
.accordion-item.open .accordion-trigger { color: var(--primary); }

.accordion-icon {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--text-muted);
  transition: transform var(--t-med), background var(--t-med), color var(--t-med);
}
.accordion-item.open .accordion-icon {
  transform: rotate(45deg);
  background: var(--primary-light);
  color: var(--primary);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.36s var(--ease-out);
  padding: 0 22px;
}
.accordion-panel p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
  padding-bottom: 22px;
}
.accordion-item.open .accordion-panel { max-height: 240px; }

/* =========================================================
   13. CTA
   ========================================================= */
.cta-section { background: var(--bg); padding-bottom: 96px; }

.cta-box {
  background: var(--gradient-hero);
  border-radius: var(--radius-xl);
  padding: 72px 48px;
  text-align: center;
  color: #fff;
  box-shadow: var(--shadow-primary);
  position: relative;
  overflow: hidden;
}
/* Decorative orbs */
.cta-box::before {
  content: '';
  position: absolute;
  width: 320px; height: 320px;
  border-radius: 50%;
  background: rgba(255,255,255,0.07);
  top: -120px; left: -80px;
  pointer-events: none;
}
.cta-box::after {
  content: '';
  position: absolute;
  width: 280px; height: 280px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  bottom: -120px; right: -60px;
  pointer-events: none;
}

.cta-box h2 {
  color: #fff;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  margin-bottom: 14px;
}
.cta-box p {
  opacity: 0.88;
  margin-bottom: 32px;
  font-size: 1.05rem;
}
.cta-trust {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 20px;
  flex-wrap: wrap;
}
.cta-trust-item {
  font-size: 0.82rem;
  font-weight: 500;
  opacity: 0.8;
  display: flex;
  align-items: center;
  gap: 5px;
}

/* =========================================================
   14. FOOTER
   ========================================================= */
.footer {
  background: #0F172A;
  color: #94A3B8;
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 36px;
  padding-bottom: 52px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.footer-brand .logo { color: #fff; }
.footer-brand p { margin-top: 14px; font-size: 0.9rem; line-height: 1.75; color: #64748B; max-width: 240px; }

.footer-col h4 {
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: 0.01em;
}
.footer-col ul { display: flex; flex-direction: column; gap: 11px; }
.footer-col a {
  font-size: 0.9rem;
  color: #64748B;
  transition: color var(--t-fast);
}
.footer-col a:hover { color: #fff; }

.footer-bottom {
  text-align: center;
  padding: 24px 0;
  font-size: 0.83rem;
  color: #334155;
}

/* =========================================================
   15. MODAL
   ========================================================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  transition: opacity var(--t-med);
}
.modal-overlay[hidden] { display: none; }
.modal-overlay.show { opacity: 1; }

.modal-box {
  position: relative;
  background: var(--card);
  border-radius: var(--radius-xl);
  padding: 44px 36px 36px;
  max-width: 400px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-lg), 0 0 0 1px var(--card-border);
  transform: scale(0.9) translateY(16px);
  transition: transform var(--t-slow);
}
.modal-overlay.show .modal-box { transform: scale(1) translateY(0); }

.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 32px; height: 32px;
  border-radius: 50%;
  font-size: 1.3rem;
  color: var(--text-faint);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--t-fast), color var(--t-fast);
}
.modal-close:hover { background: var(--bg-alt); color: var(--text); }

.modal-icon { font-size: 2.6rem; margin-bottom: 16px; }
.modal-box h3 { margin-bottom: 10px; font-size: 1.15rem; }
.modal-box p { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 28px; line-height: 1.65; }

/* =========================================================
   16. BACK TO TOP
   ========================================================= */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--gradient-hero);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-primary);
  z-index: 400;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--t-med), transform var(--t-med), box-shadow var(--t-fast);
}
.back-to-top.visible { opacity: 1; transform: translateY(0); }
.back-to-top:hover { box-shadow: 0 12px 28px rgba(79,110,247,0.44); }
.back-to-top[hidden] { display: none; }

/* =========================================================
   17. SCROLL REVEAL
   ========================================================= */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.56s var(--ease-out), transform 0.56s var(--ease-out);
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}
/* Stagger delays for children */
.reveal:nth-child(2) { transition-delay: 0.06s; }
.reveal:nth-child(3) { transition-delay: 0.12s; }
.reveal:nth-child(4) { transition-delay: 0.18s; }
.reveal:nth-child(5) { transition-delay: 0.24s; }
.reveal:nth-child(6) { transition-delay: 0.30s; }

/* =========================================================
   18. RESPONSIVE BREAKPOINTS
   ========================================================= */

/* Tablet */
@media (max-width: 1024px) {
  .hero-container { grid-template-columns: 1fr; }
  .hero-right { order: -1; }
  .hero-illustration { height: 300px; }
  .hero-subtitle { max-width: 100%; }
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .category-grid { grid-template-columns: repeat(4, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-search { max-width: 100%; }
}

/* Mobile menu + layout */
@media (max-width: 780px) {
  section { padding: 72px 0; }

  .hamburger { display: flex; }

  .nav-links {
    position: fixed;
    top: calc(var(--nav-height) + var(--announce-height));
    left: 0; right: 0; bottom: 0;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--card-border);
    flex-direction: column;
    align-items: stretch;
    padding: 20px 16px;
    gap: 4px;
    transform: translateX(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--t-med), opacity var(--t-med);
    z-index: 499;
    overflow-y: auto;
  }
  .nav-links.open {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-link {
    padding: 13px 16px;
    border-radius: var(--radius-md);
    font-size: 0.975rem;
  }

  .hero { padding: 56px 0 52px; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-search {
    flex-wrap: wrap;
    padding: 12px;
    border-radius: var(--radius-lg);
    gap: 8px;
  }
  .hero-search .btn { width: 100%; margin-top: 4px; }

  .timeline { grid-template-columns: 1fr; }

  .cta-box { padding: 52px 28px; }
  .cta-trust { gap: 12px; }
}

/* Small mobile */
@media (max-width: 560px) {
  section { padding: 56px 0; }
  .section-container { padding: 0 16px; }

  .tools-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: repeat(3, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }

  .float-card { padding: 10px 12px; font-size: 0.68rem; }
  .fc-icon { font-size: 1rem; }

  .hero-title { font-size: 2rem; }
  .cta-box { padding: 40px 20px; }

  .category-grid { grid-template-columns: repeat(2, 1fr); }
}