/* =========================================================
   LingoVantage — Global Stylesheet
   Dark, modern, professional UI (Discord / Stripe inspired)
   ---------------------------------------------------------
   Sections in this file:
   1.  Design tokens (CSS variables)
   2.  Base / reset
   3.  Layout helpers
   4.  Buttons & badges
   5.  Navbar
   6.  Footer
   7.  Hero
   8.  Feature cards
   9.  Packages / pricing
   10. Student journey
   11. FAQ
   12. CTA band
   13. Forms (signup)
   14. Assessment test
   15. Dashboard
   16. Animations
   17. Responsive breakpoints
   ========================================================= */

/* ---------- 1. DESIGN TOKENS ---------- */
:root {
  /* Brand colors taken from the logo */
  --navy-900: #060c1a;
  --navy-800: #0a1326;
  --navy-700: #0e1a33;
  --navy-600: #14233f;
  --teal-500: #14b8ab;
  --teal-400: #22d3c4;
  --teal-300: #5eead4;

  /* Surfaces — refined slate/navy for a more professional feel */
  --bg:        #070b16;
  --bg-soft:   #0b101f;
  --surface:   #0f1626;
  --surface-2: #151d31;
  --border:    #1f2942;
  --border-soft: #18203492;

  /* Text — higher contrast, calmer hierarchy */
  --text:      #f2f5fc;
  --text-soft: #b8c2d9;
  --text-dim:  #7c89a6;

  /* Accents */
  --accent:    var(--teal-400);
  --accent-2:  #7c93ff;
  --accent-3:  #a78bfa;
  --danger:    #f87171;
  --success:   #34d399;
  --warn:      #fbbf24;

  /* Effects */
  --radius:    16px;
  --radius-sm: 12px;
  --radius-lg: 22px;
  --shadow:    0 24px 60px -15px rgba(0,0,0,.6);
  --shadow-sm: 0 8px 24px -8px rgba(0,0,0,.5);
  --glow:      0 0 50px -8px rgba(34,211,196,.28);
  --maxw:      1180px;

  --font: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

/* ---------- 2. BASE / RESET ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

/* Ambient background glows — subtle & professional */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(55vw 45vh at 8% -8%, rgba(34,211,196,.08), transparent 60%),
    radial-gradient(50vw 45vh at 100% -5%, rgba(124,147,255,.07), transparent 58%),
    radial-gradient(40vw 40vh at 85% 105%, rgba(34,211,196,.05), transparent 60%);
  pointer-events: none;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

h1, h2, h3 { line-height: 1.2; font-weight: 800; letter-spacing: -.02em; }

::selection { background: var(--teal-400); color: var(--navy-900); }

/* Custom scrollbar */
::-webkit-scrollbar { width: 11px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--surface-2); border-radius: 20px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--border); }

/* ---------- 3. LAYOUT HELPERS ---------- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 22px; }

.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }

.section-head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-head .eyebrow {
  display: inline-block;
  font-size: .8rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--teal-400);
  background: rgba(45,225,208,.08);
  border: 1px solid rgba(45,225,208,.25);
  padding: 6px 14px; border-radius: 100px; margin-bottom: 18px;
}
.section-head h2 { font-size: clamp(1.8rem, 4vw, 2.7rem); }
.section-head p { color: var(--text-soft); margin-top: 14px; font-size: 1.05rem; }

.grad-text {
  background: linear-gradient(100deg, var(--teal-300), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- 4. BUTTONS & BADGES ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: inherit; font-weight: 600; font-size: .96rem; letter-spacing: .01em;
  padding: 12px 24px; border-radius: 100px; border: 1px solid transparent;
  cursor: pointer; transition: transform .18s ease, box-shadow .25s ease, background .2s ease, border-color .2s, color .2s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px) scale(.99); }

.btn-primary {
  background: linear-gradient(100deg, var(--teal-300), var(--teal-500));
  color: #04221f; font-weight: 700;
  box-shadow: 0 8px 22px -6px rgba(34,211,196,.5);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px -6px rgba(34,211,196,.6); }

.btn-ghost {
  background: rgba(255,255,255,.03);
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--teal-400); color: var(--teal-300); background: rgba(34,211,196,.07); }

/* Solid dark secondary (used in navbar) */
.btn-dark {
  background: var(--surface-2);
  border-color: var(--border);
  color: var(--text); font-weight: 700;
}
.btn-dark:hover { background: var(--surface); border-color: var(--teal-500); transform: translateY(-2px); }

.btn-discord { background: #5865F2; color: #ffffff !important; font-weight: 700; box-shadow: 0 8px 20px -6px rgba(88,101,242,.55); }
.btn-discord:hover { background: #6b76f5; color: #ffffff !important; transform: translateY(-2px); box-shadow: 0 14px 28px -6px rgba(88,101,242,.65); }

.btn-whatsapp { background: #1FAF54; color: #ffffff !important; font-weight: 700; box-shadow: 0 8px 20px -6px rgba(31,175,84,.55); }
.btn-whatsapp:hover { background: #25c960; color: #ffffff !important; transform: translateY(-2px); box-shadow: 0 14px 28px -6px rgba(31,175,84,.6); }

/* Brand icon inside buttons */
.btn-ico { width: 18px; height: 18px; flex-shrink: 0; }
.btn-lg .btn-ico { width: 20px; height: 20px; }

.btn-block { width: 100%; }
.btn-lg { padding: 15px 32px; font-size: 1.02rem; }

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  padding: 5px 11px; border-radius: 100px;
  background: rgba(108,140,255,.14); color: #b9c7ff; border: 1px solid rgba(108,140,255,.3);
}

/* ---------- 5. NAVBAR ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(7,11,22,.7);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s;
}
.nav.scrolled { border-bottom-color: var(--border); background: rgba(7,11,22,.92); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo img { height: 34px; width: auto; transition: opacity .2s; }
.nav-logo:hover img { opacity: .85; }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  padding: 9px 15px; border-radius: 10px; color: var(--text-soft);
  font-weight: 600; font-size: .95rem; transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,.05); }
.nav-links a.active { color: var(--teal-300); }
.nav-cta { display: flex; align-items: center; gap: 10px; }

.nav-toggle {
  display: none; background: none; border: 1px solid var(--border);
  border-radius: 10px; padding: 8px 10px; cursor: pointer;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 4px 0; border-radius: 2px; transition: .3s; }

/* ---------- 6. FOOTER ---------- */
.footer { border-top: 1px solid var(--border); background: var(--bg-soft); padding: 64px 0 28px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 40px; }
.footer-brand img { height: 34px; margin-bottom: 16px; }
.footer-brand p { color: var(--text-soft); max-width: 280px; font-size: .95rem; }
.footer-col h4 { font-size: .8rem; text-transform: uppercase; letter-spacing: .12em; color: var(--text-dim); margin-bottom: 16px; }
.footer-col a { display: block; color: var(--text-soft); padding: 6px 0; font-size: .95rem; transition: color .2s; }
.footer-col a:hover { color: var(--teal-300); }
.footer-social { display: flex; flex-direction: row; gap: 14px; flex-wrap: wrap; }
.social-btn {
  width: 44px; height: 44px; border-radius: 12px;
  display: inline-grid; place-items: center;
  background: transparent; border: none;
  transition: transform .2s ease, filter .2s ease;
}
.social-btn svg { width: 30px; height: 30px; display: block; transition: filter .2s ease; }
.social-whatsapp { color: #25D366; }
.social-discord  { color: #7c93ff; }
.social-btn:hover { transform: translateY(-3px) scale(1.08); }
.social-whatsapp:hover { color: #2ee676; filter: drop-shadow(0 4px 12px rgba(37,211,102,.55)); }
.social-discord:hover  { color: #8b9bff; filter: drop-shadow(0 4px 12px rgba(124,147,255,.55)); }
.footer-bottom {
  margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap;
  color: var(--text-dim); font-size: .88rem;
}

/* ---------- 7. HERO ---------- */
.hero { position: relative; padding: 80px 0 90px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(2.3rem, 5.2vw, 3.7rem); margin-bottom: 20px; }
.hero p.lead { font-size: 1.15rem; color: var(--text-soft); max-width: 540px; margin-bottom: 30px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 34px; }
.hero-stats { display: flex; gap: 34px; flex-wrap: wrap; }
.hero-stats .stat strong { display: block; font-size: 1.7rem; color: var(--teal-300); }
.hero-stats .stat span { color: var(--text-dim); font-size: .9rem; }

/* Hero visual card */
.hero-card {
  position: relative; background: linear-gradient(160deg, var(--surface), var(--bg-soft));
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 26px; box-shadow: var(--shadow);
}
.hero-card .hc-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.hero-card .hc-dots span { display: inline-block; width: 11px; height: 11px; border-radius: 50%; margin-right: 6px; }
.hero-card .hc-dots span:nth-child(1){ background:#ff5f57; }
.hero-card .hc-dots span:nth-child(2){ background:#febc2e; }
.hero-card .hc-dots span:nth-child(3){ background:#28c840; }
.chat-line { display: flex; gap: 12px; margin-bottom: 14px; align-items: flex-start; }
.chat-avatar { width: 38px; height: 38px; border-radius: 50%; flex-shrink: 0; display: grid; place-items: center; font-weight: 800; }
.chat-avatar.bot { background: linear-gradient(135deg, var(--teal-400), var(--teal-500)); color: var(--navy-900); }
.chat-avatar.user { background: linear-gradient(135deg, var(--accent-2), #9b6cff); color: #fff; }
.chat-bubble { background: var(--surface-2); border: 1px solid var(--border); border-radius: 14px; padding: 11px 15px; font-size: .92rem; color: var(--text-soft); }
.chat-bubble.accent { background: rgba(45,225,208,.1); border-color: rgba(45,225,208,.3); color: var(--text); }
.hero-card .progress-row { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--border); }
.hero-card .progress-row .pr-label { display: flex; justify-content: space-between; font-size: .82rem; color: var(--text-dim); margin-bottom: 7px; }
.progress-bar { height: 8px; border-radius: 100px; background: var(--surface-2); overflow: hidden; }
.progress-bar > i { display: block; height: 100%; background: linear-gradient(90deg, var(--teal-400), var(--accent-2)); border-radius: 100px; }

.float-badge {
  position: absolute; background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 10px 14px; display: flex; align-items: center; gap: 9px;
  box-shadow: var(--shadow); font-size: .85rem; font-weight: 600;
}
.float-badge .fb-icon { width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; }
.float-badge.b1 { top: -18px; right: -14px; }
.float-badge.b2 { bottom: -18px; left: -14px; }

/* Logo strip */
.trust { padding: 26px 0 0; }
.trust p { text-align: center; color: var(--text-dim); font-size: .82rem; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 18px; }
.trust-row { display: flex; gap: 36px; justify-content: center; flex-wrap: wrap; opacity: .7; }
.trust-row span { font-weight: 800; font-size: 1.1rem; color: var(--text-dim); }

/* ---------- 8. FEATURE CARDS ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  background: linear-gradient(180deg, var(--surface), var(--bg-soft));
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; transition: transform .22s ease, border-color .22s, box-shadow .22s;
}
.card:hover { transform: translateY(-5px); border-color: rgba(34,211,196,.35); box-shadow: var(--shadow); }
.card .ic {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  background: linear-gradient(150deg, rgba(34,211,196,.16), rgba(124,147,255,.1));
  border: 1px solid rgba(34,211,196,.22);
  font-size: 1.5rem; margin-bottom: 18px;
}
.card h3 { font-size: 1.18rem; margin-bottom: 9px; }
.card p { color: var(--text-soft); font-size: .96rem; }

/* ---------- 9. PACKAGES / PRICING ---------- */
.pricing-toggle { display: flex; justify-content: center; align-items: center; gap: 14px; margin-bottom: 40px; }
.pricing-toggle span { color: var(--text-soft); font-weight: 600; }
.switch { position: relative; width: 56px; height: 30px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 100px; cursor: pointer; }
.switch i { position: absolute; top: 3px; left: 3px; width: 22px; height: 22px; border-radius: 50%; background: var(--teal-400); transition: .25s; }
.switch.on i { left: 28px; }
.save-pill { font-size: .72rem; background: rgba(52,211,153,.15); color: var(--success); border: 1px solid rgba(52,211,153,.3); padding: 3px 9px; border-radius: 100px; font-weight: 700; }

.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.price-grid-2 { grid-template-columns: repeat(2, 1fr); max-width: 760px; margin: 0 auto; }
.price-card {
  position: relative; background: linear-gradient(180deg, var(--surface), var(--bg-soft));
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 34px 28px; display: flex; flex-direction: column;
  transition: transform .22s, border-color .22s, box-shadow .22s;
}
.price-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.price-card.popular { border-color: var(--teal-400); box-shadow: var(--glow); }
.price-card.popular::before {
  content: "Most Popular"; position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(100deg, var(--teal-400), var(--teal-500)); color: var(--navy-900);
  font-size: .72rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase;
  padding: 6px 16px; border-radius: 100px;
}
.price-card .plan-name { font-size: 1.25rem; font-weight: 800; }
.price-card .plan-desc { color: var(--text-dim); font-size: .9rem; margin: 6px 0 18px; min-height: 40px; }
.price-card .price { font-size: 2.4rem; font-weight: 800; line-height: 1; display: flex; align-items: baseline; gap: 2px; flex-wrap: wrap; }
.price-card .price small { font-size: .95rem; font-weight: 500; color: var(--text-dim); }
.price-card .price-old { color: var(--text-dim); text-decoration: line-through; font-size: 1rem; margin-bottom: 18px; display: block; }
.price-card ul { margin: 22px 0 26px; display: grid; gap: 12px; }
.price-card ul li { display: flex; gap: 10px; align-items: flex-start; color: var(--text-soft); font-size: .95rem; }
.price-card ul li .chk { color: var(--teal-400); flex-shrink: 0; font-weight: 800; }
.price-card ul li.off { color: var(--text-dim); opacity: .6; }
.price-card ul li.off .chk { color: var(--text-dim); }
.price-card .btn { margin-top: auto; }

/* ---------- 10. STUDENT JOURNEY ---------- */
.journey { position: relative; }
.journey-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; position: relative; }
.journey-grid::before {
  content: ""; position: absolute; top: 36px; left: 8%; right: 8%; height: 2px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}
.step { text-align: center; position: relative; }
.step .num {
  width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 50%;
  display: grid; place-items: center; font-size: 1.5rem; font-weight: 800;
  background: var(--surface); border: 2px solid var(--teal-400); color: var(--teal-300);
  box-shadow: var(--glow); position: relative; z-index: 1;
}
.step h3 { font-size: 1.1rem; margin-bottom: 8px; }
.step p { color: var(--text-soft); font-size: .92rem; }

/* ---------- 11. FAQ ---------- */
.faq-wrap { max-width: 760px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; transition: border-color .2s; }
.faq-item.open { border-color: rgba(45,225,208,.4); }
.faq-q { width: 100%; text-align: left; background: none; border: none; color: var(--text); cursor: pointer;
  padding: 19px 22px; font-size: 1.02rem; font-weight: 700; font-family: inherit;
  display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq-q .arr { transition: transform .25s; color: var(--teal-400); font-size: 1.3rem; line-height: 1; }
.faq-item.open .faq-q .arr { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a p { padding: 0 22px 20px; color: var(--text-soft); }

/* ---------- 12. CTA BAND ---------- */
.cta-band {
  position: relative; overflow: hidden;
  background: linear-gradient(120deg, var(--navy-700), var(--navy-800));
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 56px 48px; text-align: center;
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(50% 120% at 50% 0%, rgba(45,225,208,.2), transparent 70%);
}
.cta-band > * { position: relative; }
.cta-band h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin-bottom: 14px; }
.cta-band p { color: var(--text-soft); max-width: 560px; margin: 0 auto 28px; font-size: 1.05rem; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- 13. FORMS (SIGNUP) ---------- */
.auth-wrap { display: grid; grid-template-columns: 0.78fr 1.22fr; gap: 0; min-height: calc(100vh - 72px); }
.auth-aside {
  background: linear-gradient(160deg, var(--navy-700), var(--navy-900));
  border-right: 1px solid var(--border);
  padding: 56px 44px; display: flex; flex-direction: column; justify-content: center; position: relative; overflow: hidden;
}
.auth-aside::before { content: ""; position: absolute; inset: 0; background: radial-gradient(50% 50% at 80% 10%, rgba(45,225,208,.18), transparent 60%); }
.auth-aside > * { position: relative; align-self: flex-start; }
.auth-aside .badge { align-self: flex-start; width: auto; }
.auth-aside h2 { font-size: 1.7rem; margin-bottom: 14px; }
.auth-aside p { color: var(--text-soft); margin-bottom: 30px; }
.auth-aside .perk { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 16px; }
.auth-aside .perk .pi { width: 34px; height: 34px; border-radius: 10px; background: rgba(45,225,208,.12); border: 1px solid rgba(45,225,208,.3); display: grid; place-items: center; flex-shrink: 0; }
.auth-aside .perk div strong { display: block; }
.auth-aside .perk div span { color: var(--text-soft); font-size: .9rem; }

.auth-form-wrap { padding: 56px; display: flex; flex-direction: column; justify-content: center; }
.auth-form-inner { width: 100%; max-width: 460px; margin: 0 auto; }

.form-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow);
}
.form-row { margin-bottom: 18px; }
.form-row.two { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-row label { display: block; font-size: .88rem; font-weight: 600; color: var(--text-soft); margin-bottom: 8px; }
.form-row label .req { color: var(--danger); }
.input, .select, .textarea {
  width: 100%; font-family: inherit; font-size: .98rem;
  background: var(--bg-soft); border: 1px solid var(--border); color: var(--text);
  padding: 13px 15px; border-radius: var(--radius-sm); transition: border-color .2s, box-shadow .2s;
}
.input::placeholder, .textarea::placeholder { color: var(--text-dim); }
.input:focus, .select:focus, .textarea:focus {
  outline: none; border-color: var(--teal-400); box-shadow: 0 0 0 3px rgba(45,225,208,.15);
}
.textarea { resize: vertical; min-height: 90px; }
.select { appearance: none; background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='%236f7d99' viewBox='0 0 16 16'><path d='M8 11L3 6h10z'/></svg>"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 38px; }
.field-error { color: var(--danger); font-size: .82rem; margin-top: 6px; display: none; }
.form-row.invalid .input, .form-row.invalid .select { border-color: var(--danger); }
.form-row.invalid .field-error { display: block; }

.form-note { font-size: .85rem; color: var(--text-dim); text-align: center; margin-top: 16px; }
.form-note a { color: var(--teal-300); }

/* Package radio cards */
.pkg-options { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.pkg-opt { position: relative; cursor: pointer; display: block; margin: 0; }
.pkg-opt input { position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none; }
.pkg-opt .pkg-box {
  display: flex; flex-direction: column; gap: 4px;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  padding: 16px 16px 16px 44px; background: var(--bg-soft); transition: .2s; height: 100%;
  position: relative;
}
/* custom radio dot */
.pkg-opt .pkg-box::before {
  content: ""; position: absolute; left: 15px; top: 50%; transform: translateY(-50%);
  width: 18px; height: 18px; border-radius: 50%;
  border: 2px solid var(--border); background: transparent; transition: .2s;
}
.pkg-opt .pkg-box strong { display: block; font-size: .98rem; color: var(--text); }
.pkg-opt .pkg-box span { font-size: .82rem; color: var(--text-dim); }
.pkg-opt:hover .pkg-box { border-color: var(--teal-500); }
.pkg-opt input:checked + .pkg-box {
  border-color: var(--teal-400); background: rgba(34,211,196,.08);
}
.pkg-opt input:checked + .pkg-box::before {
  border-color: var(--teal-400);
  background: radial-gradient(circle, var(--teal-400) 0 42%, transparent 46%);
}
.pkg-opt input:focus-visible + .pkg-box { box-shadow: 0 0 0 3px rgba(34,211,196,.25); }

/* Toast / alert */
.alert { padding: 14px 16px; border-radius: var(--radius-sm); margin-bottom: 18px; font-size: .92rem; display: none; }
.alert.show { display: block; }
.alert.success { background: rgba(52,211,153,.12); border: 1px solid rgba(52,211,153,.4); color: #8af0c8; }
.alert.error { background: rgba(255,107,107,.1); border: 1px solid rgba(255,107,107,.4); color: #ffb4b4; }

/* Success screen */
.success-screen { text-align: center; }
.success-screen .check {
  width: 84px; height: 84px; margin: 0 auto 22px; border-radius: 50%;
  background: rgba(52,211,153,.12); border: 2px solid var(--success);
  display: grid; place-items: center; font-size: 2.4rem; color: var(--success);
  animation: pop .4s ease;
}

/* ---------- 14. ASSESSMENT TEST ---------- */
.test-shell { max-width: 800px; margin: 0 auto; }
.test-intro { text-align: center; }
.test-intro .test-icon { font-size: 3rem; margin-bottom: 12px; }
.test-meta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin: 26px 0 32px; }
.test-meta .chip { background: var(--surface); border: 1px solid var(--border); border-radius: 100px; padding: 10px 18px; font-size: .9rem; color: var(--text-soft); display: flex; align-items: center; gap: 8px; }
.test-meta .chip strong { color: var(--teal-300); }

.quiz-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; gap: 16px; }
.quiz-count { font-weight: 700; color: var(--text-soft); }
.quiz-count b { color: var(--teal-300); }
.quiz-timer { font-weight: 700; color: var(--text-soft); font-variant-numeric: tabular-nums; }
.quiz-progress { height: 8px; border-radius: 100px; background: var(--surface-2); overflow: hidden; margin-bottom: 28px; }
.quiz-progress > i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--teal-400), var(--accent-2)); border-radius: 100px; transition: width .3s; }

.question-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 34px; box-shadow: var(--shadow); }
.q-level { font-size: .74rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--accent-2); margin-bottom: 12px; }
.q-text { font-size: 1.3rem; font-weight: 700; margin-bottom: 24px; line-height: 1.45; }
.q-text .blank { color: var(--teal-300); border-bottom: 2px dashed var(--teal-500); padding: 0 24px; }
.options { display: grid; gap: 12px; }
.option {
  display: flex; align-items: center; gap: 14px; cursor: pointer;
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 15px 18px; transition: .18s; font-size: 1rem;
}
.option:hover { border-color: var(--teal-500); background: rgba(45,225,208,.05); }
.option .opt-key {
  width: 30px; height: 30px; border-radius: 8px; flex-shrink: 0;
  display: grid; place-items: center; font-weight: 800; font-size: .9rem;
  background: var(--surface-2); border: 1px solid var(--border); transition: .18s;
}
.option.selected { border-color: var(--teal-400); background: rgba(45,225,208,.1); }
.option.selected .opt-key { background: var(--teal-400); color: var(--navy-900); border-color: var(--teal-400); }

.quiz-nav { display: flex; justify-content: space-between; gap: 12px; margin-top: 26px; }

/* Result */
.result-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 44px; text-align: center; box-shadow: var(--shadow); }
.result-ring {
  width: 180px; height: 180px; margin: 0 auto 24px; border-radius: 50%;
  display: grid; place-items: center; position: relative;
  background: conic-gradient(var(--teal-400) var(--deg, 0deg), var(--surface-2) 0deg);
}
.result-ring::after { content: ""; position: absolute; inset: 12px; background: var(--surface); border-radius: 50%; }
.result-ring .rr-inner { position: relative; z-index: 1; }
.result-ring .rr-level { font-size: 2.6rem; font-weight: 800; color: var(--teal-300); line-height: 1; }
.result-ring .rr-score { font-size: .9rem; color: var(--text-dim); }
.result-title { font-size: 1.8rem; margin-bottom: 10px; }
.result-desc { color: var(--text-soft); max-width: 520px; margin: 0 auto 26px; }
.result-breakdown { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; margin: 28px 0; text-align: left; }
.rb-item { background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px; }
.rb-item .rb-num { font-size: 1.6rem; font-weight: 800; color: var(--teal-300); }
.rb-item .rb-lbl { color: var(--text-dim); font-size: .85rem; }
.result-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---------- 15. DASHBOARD ---------- */
.dash-head { display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: 16px; margin-bottom: 28px; }
.dash-tools { display: flex; gap: 10px; flex-wrap: wrap; }
.stat-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; margin-bottom: 28px; }
.stat-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.stat-card .sc-num { font-size: 2rem; font-weight: 800; color: var(--teal-300); }
.stat-card .sc-lbl { color: var(--text-dim); font-size: .9rem; }
.table-wrap { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.table-scroll { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; min-width: 760px; }
table.data th, table.data td { padding: 14px 16px; text-align: left; font-size: .92rem; border-bottom: 1px solid var(--border); }
table.data th { background: var(--bg-soft); color: var(--text-dim); font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; }
table.data tr:hover td { background: rgba(255,255,255,.02); }
table.data .pill { font-size: .75rem; padding: 4px 10px; border-radius: 100px; background: rgba(108,140,255,.15); color: #b9c7ff; border: 1px solid rgba(108,140,255,.3); }
.dash-empty { padding: 50px; text-align: center; color: var(--text-dim); }
.dash-login { max-width: 420px; margin: 60px auto; }

/* ---------- 15b. STUDENT PORTAL ---------- */
.tabs { display: flex; gap: 10px; margin-bottom: 28px; flex-wrap: wrap; border-bottom: 1px solid var(--border); }
.tab-btn {
  font-family: inherit; font-size: 1rem; font-weight: 700; cursor: pointer;
  background: none; border: none; color: var(--text-soft);
  padding: 14px 20px; border-bottom: 2px solid transparent; margin-bottom: -1px;
  transition: color .2s, border-color .2s;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--teal-300); border-bottom-color: var(--teal-400); }
.tab-panel { display: none; animation: fadeUp .35s ease; }
.tab-panel.active { display: block; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

.session-list { display: grid; gap: 12px; }
.session-row, .hw-row {
  display: flex; align-items: center; gap: 16px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 18px;
  transition: border-color .2s, transform .2s;
}
.session-row:hover, .hw-row:hover { border-color: rgba(34,211,196,.35); transform: translateX(3px); }
.session-row.pending { opacity: .72; }
.session-num {
  width: 44px; height: 44px; flex-shrink: 0; border-radius: 12px;
  display: grid; place-items: center; font-weight: 800; font-size: 1.1rem;
  background: rgba(34,211,196,.12); border: 1px solid rgba(34,211,196,.28); color: var(--teal-300);
}
.session-info { flex: 1; min-width: 0; }
.session-info strong { display: block; font-size: 1.05rem; }
.session-info span { color: var(--text-dim); font-size: .85rem; }
.session-action { flex-shrink: 0; }
.session-action .btn { padding: 10px 18px; font-size: .9rem; }
.soon-pill {
  display: inline-block; font-size: .8rem; font-weight: 700;
  color: var(--text-dim); background: var(--bg-soft);
  border: 1px solid var(--border); border-radius: 100px; padding: 8px 16px;
}
.hw-page { flex-shrink: 0; font-size: 1rem; color: var(--text-soft); }
.hw-page b { color: var(--teal-300); font-size: 1.15rem; }

@media (max-width: 560px) {
  .session-row, .hw-row { flex-wrap: wrap; }
  .session-action, .hw-page { width: 100%; }
  .session-action .btn { width: 100%; }
}

/* Portal — Tests / quiz */
.quiz-q { padding: 16px 0; border-bottom: 1px solid var(--border); }
.quiz-q:last-child { border-bottom: none; }
.quiz-q-text { font-weight: 600; margin-bottom: 12px; }
.quiz-opts { display: grid; gap: 8px; }
.quiz-opts.row { grid-auto-flow: column; justify-content: start; gap: 12px; }
.quiz-opt {
  display: flex; align-items: center; gap: 10px; cursor: pointer;
  background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 10px 14px; transition: .15s;
}
.quiz-opt:hover { border-color: var(--teal-500); }
.quiz-opt input { accent-color: var(--teal-400); width: 17px; height: 17px; flex-shrink: 0; }
.quiz-opt input:checked + span { color: var(--teal-300); font-weight: 600; }
.cafe { background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px 18px; display: grid; gap: 10px; }
.cafe-line { color: var(--text-soft); }
.cafe-line b { color: var(--text); }
.blank-input {
  display: inline-block; width: 120px; font-family: inherit; font-size: .95rem;
  background: var(--surface); border: none; border-bottom: 2px solid var(--teal-500);
  color: var(--text); padding: 3px 8px; border-radius: 6px 6px 0 0;
}
.blank-input:focus { outline: none; border-bottom-color: var(--teal-300); background: var(--surface-2); }

/* Dashboard — clickable rows */
table.data tr.clickable { cursor: pointer; }
table.data tr.clickable:hover td { background: rgba(34,211,196,.06); }

/* Dashboard — detail modal */
.modal-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(4,7,14,.72); backdrop-filter: blur(4px);
  display: flex; align-items: flex-start; justify-content: center;
  padding: 40px 16px; overflow-y: auto;
}
.modal-box {
  position: relative; width: 100%; max-width: 640px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 32px; box-shadow: var(--shadow);
  animation: fadeUp .3s ease;
}
.modal-close {
  position: absolute; top: 14px; right: 14px; width: 34px; height: 34px;
  border-radius: 9px; border: 1px solid var(--border); background: var(--bg-soft);
  color: var(--text-soft); font-size: 1rem; cursor: pointer; transition: .18s;
}
.modal-close:hover { color: var(--text); border-color: var(--teal-500); }
.raw-json { background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px; overflow-x: auto; font-size: .85rem; color: var(--text-soft); white-space: pre-wrap; }

/* Test answer rows in modal */
.ans-row { padding: 10px 12px; border-radius: var(--radius-sm); margin-bottom: 8px; border: 1px solid var(--border); background: var(--bg-soft); }
.ans-row.ok  { border-color: rgba(52,211,153,.3); }
.ans-row.bad { border-color: rgba(248,113,113,.35); }
.ans-q { font-weight: 600; font-size: .92rem; margin-bottom: 6px; }
.ans-detail { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; font-size: .88rem; color: var(--text-soft); }
.ans-badge { width: 22px; height: 22px; border-radius: 6px; display: grid; place-items: center; font-weight: 800; flex-shrink: 0; }
.ans-badge.ok  { background: rgba(52,211,153,.16); color: #34d399; }
.ans-badge.bad { background: rgba(248,113,113,.16); color: #f87171; }
.ans-correct { color: var(--teal-300); }

/* Fill-in-the-blank inputs (homework) */
.blank-inputs { display: flex; flex-wrap: wrap; gap: 10px; }
.hw-blank { max-width: 260px; }

/* Voice recorder (portal homework) */
.recorder { background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 18px; }
.rec-controls { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.rec-timer { margin-left: auto; font-weight: 800; font-variant-numeric: tabular-nums; color: var(--teal-300); font-size: 1.1rem; }
.rec-status { color: var(--text-soft); font-size: .9rem; margin-top: 12px; }
#recStart:disabled, #recStop:disabled { opacity: .5; cursor: not-allowed; }

/* Homework content in modal */
.hw-content-box {
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 16px 18px; white-space: pre-wrap; line-height: 1.7; color: var(--text);
  max-height: 55vh; overflow-y: auto;
}

/* ---------- 16. ANIMATIONS ---------- */
@keyframes pop { 0% { transform: scale(.6); opacity: 0; } 100% { transform: scale(1); opacity: 1; } }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }
.float-badge { animation: floaty 4s ease-in-out infinite; }
.float-badge.b2 { animation-delay: 1.5s; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

.spinner { width: 18px; height: 18px; border: 2px solid rgba(0,0,0,.25); border-top-color: var(--navy-900); border-radius: 50%; animation: spin .7s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- 17. RESPONSIVE ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-card { max-width: 480px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .price-grid { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; }
  .journey-grid { grid-template-columns: 1fr 1fr; }
  .journey-grid::before { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .auth-wrap { grid-template-columns: 1fr; }
  .auth-aside { display: none; }
  .result-breakdown { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .section { padding: 64px 0; }
  .nav-links { display: none; position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 4px; padding: 14px 22px 22px;
    background: rgba(7,11,22,.98); border-bottom: 1px solid var(--border); backdrop-filter: blur(16px); }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 14px; }
  .nav-toggle { display: block; }
  .nav-cta .btn-ghost { display: none; }
  .feature-grid { grid-template-columns: 1fr; }
  .form-row.two { grid-template-columns: 1fr; }
  .pkg-options { grid-template-columns: 1fr; }
  .cta-band { padding: 40px 24px; }
  .auth-form-wrap { padding: 32px 20px; }
  .question-card, .result-card, .form-card { padding: 24px 20px; }
  .q-text { font-size: 1.12rem; }
}

@media (max-width: 480px) {
  .journey-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 22px; }
}