/* =====================================================
   MATORA — Modern math tutoring website
   Tokens, base, layout, components, responsive, themes
   ===================================================== */

/* ---------- Tokens ---------- */
:root {
  /* Brand */
  --grad-1: #7c5cff;
  --grad-2: #22d3ee;
  --grad-soft: linear-gradient(135deg, #7c5cff 0%, #22d3ee 100%);
  --grad-warm: linear-gradient(135deg, #ff7eb6 0%, #ffb86b 100%);

  /* Light theme */
  --bg: #f7f8fc;
  --bg-elev: #ffffff;
  --bg-soft: #eef0f7;
  --text: #0b1020;
  --text-muted: #545a73;
  --text-soft: #7a8099;
  --border: #e5e8f1;
  --border-strong: #d2d6e2;
  --primary: #5b3df5;
  --primary-ink: #ffffff;
  --primary-soft: #efebff;
  --accent: #08a6c8;
  --shadow-sm: 0 2px 6px rgba(15, 20, 50, 0.04), 0 1px 2px rgba(15, 20, 50, 0.06);
  --shadow-md: 0 12px 30px -10px rgba(15, 20, 50, 0.12), 0 4px 12px -4px rgba(15, 20, 50, 0.08);
  --shadow-lg: 0 30px 60px -20px rgba(15, 20, 50, 0.18), 0 18px 36px -18px rgba(15, 20, 50, 0.12);
  --ring: 0 0 0 4px rgba(124, 92, 255, 0.18);

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-xl: 28px;

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Instrument Serif", Georgia, "Times New Roman", serif;

  --container: 1180px;
  --section-py: clamp(64px, 9vw, 120px);
  --transition: 220ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

[data-theme="dark"] {
  --bg: #0a0d18;
  --bg-elev: #11162a;
  --bg-soft: #161c33;
  --text: #f1f3fb;
  --text-muted: #aab2cc;
  --text-soft: #8089a6;
  --border: #20263d;
  --border-strong: #2c344f;
  --primary: #8b6bff;
  --primary-ink: #ffffff;
  --primary-soft: #1d1c44;
  --accent: #22d3ee;
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 12px 30px -10px rgba(0, 0, 0, 0.45), 0 4px 12px -4px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 30px 60px -20px rgba(0, 0, 0, 0.55), 0 18px 36px -18px rgba(0, 0, 0, 0.4);
  --ring: 0 0 0 4px rgba(139, 107, 255, 0.32);
}

/* ---------- Reset / Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background var(--transition), color var(--transition);
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary); }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3, h4 { line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 0.4em; font-weight: 700; }
h1 { font-size: clamp(2.4rem, 5vw, 4rem); letter-spacing: -0.035em; }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); letter-spacing: -0.03em; }
h3 { font-size: 1.2rem; }
p  { margin: 0 0 1em; color: var(--text-muted); }
ul { margin: 0; padding: 0; list-style: none; }

/* ---------- Utilities ---------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: 24px; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 12px; top: 12px; padding: 10px 14px;
  background: var(--primary); color: var(--primary-ink); border-radius: 8px;
  transform: translateY(-200%); transition: transform var(--transition); z-index: 100;
}
.skip-link:focus { transform: translateY(0); color: var(--primary-ink); }

.grad-text {
  background: var(--grad-soft);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: 999px;
  background: var(--bg-elev); border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.82rem; font-weight: 500; letter-spacing: 0.01em;
  box-shadow: var(--shadow-sm);
}
.eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: #22c55e; box-shadow: 0 0 0 3px rgba(34,197,94,0.18); }
.eyebrow--alt { color: var(--primary); border-color: var(--primary-soft); background: var(--primary-soft); }

.section-head { text-align: center; max-width: 720px; margin: 0 auto clamp(40px, 6vw, 64px); }
.section-head h2 { margin-top: 14px; }
.section-sub { color: var(--text-muted); font-size: 1.05rem; }

.grid { display: grid; gap: 22px; }
.grid--3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
@media (max-width: 900px) { .grid--3 { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 600px) { .grid--3 { grid-template-columns: 1fr; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 18px; border-radius: 12px; font-weight: 600; font-size: 0.95rem;
  border: 1px solid transparent; cursor: pointer; user-select: none;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition), border-color var(--transition), color var(--transition);
  white-space: nowrap;
}
.btn:focus-visible { outline: none; box-shadow: var(--ring); }
.btn--primary { background: var(--primary); color: var(--primary-ink); box-shadow: 0 8px 20px -8px rgba(91, 61, 245, 0.6); }
.btn--primary:hover { transform: translateY(-1px); background: #4f33da; color: var(--primary-ink); }
.btn--ghost { background: var(--bg-elev); color: var(--text); border-color: var(--border-strong); }
.btn--ghost:hover { transform: translateY(-1px); border-color: var(--primary); color: var(--primary); }
.btn--lg { padding: 14px 22px; font-size: 1rem; border-radius: 14px; }
.btn--sm { padding: 9px 14px; font-size: 0.88rem; border-radius: 10px; }
.btn--block { width: 100%; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.nav.is-stuck { border-bottom-color: var(--border); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 24px; gap: 16px; max-width: var(--container); margin: 0 auto; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -0.02em; font-size: 1.1rem; color: var(--text); }
.brand:hover { color: var(--text); }
.brand__mark { display: inline-grid; place-items: center; box-shadow: var(--shadow-sm); border-radius: 10px; }
.nav__links { display: flex; gap: 6px; }
.nav__links a {
  padding: 8px 12px; border-radius: 10px; color: var(--text-muted); font-size: 0.93rem; font-weight: 500;
}
.nav__links a:hover { color: var(--text); background: var(--bg-soft); }
.nav__cta { display: flex; align-items: center; gap: 10px; }

.theme-toggle {
  width: 38px; height: 38px; display: grid; place-items: center;
  border-radius: 10px; color: var(--text-muted); border: 1px solid var(--border);
  background: var(--bg-elev); transition: all var(--transition);
}
.theme-toggle:hover { color: var(--primary); border-color: var(--primary); }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.hamburger { display: none; width: 38px; height: 38px; flex-direction: column; align-items: center; justify-content: center; gap: 5px; border-radius: 10px; border: 1px solid var(--border); background: var(--bg-elev); }
.hamburger span { width: 18px; height: 2px; background: var(--text); border-radius: 2px; transition: transform var(--transition), opacity var(--transition); }
.hamburger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.hamburger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav__mobile {
  display: none; padding: 12px 24px 18px; flex-direction: column; gap: 4px;
  border-top: 1px solid var(--border); background: var(--bg-elev);
}
.nav__mobile a { padding: 12px 14px; border-radius: 10px; color: var(--text); font-weight: 500; }
.nav__mobile a:hover { background: var(--bg-soft); }
.nav__mobile .btn { margin-top: 6px; }

@media (max-width: 1020px) {
  .nav__links { display: none; }
  .hamburger { display: inline-flex; }
  .nav__mobile[hidden] { display: none; }
  .nav__mobile { display: flex; }
  .nav__cta .btn--primary { display: none; }
}
@media (max-width: 480px) {
  .lang-switch button { padding: 5px 8px; font-size: 0.72rem; }
}

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 700ms ease, transform 700ms cubic-bezier(0.2, 0.7, 0.2, 1); }
.reveal.is-in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- Hero ---------- */
.hero { position: relative; padding: clamp(60px, 9vw, 110px) 0 clamp(40px, 6vw, 80px); overflow: hidden; }
.hero__bg { position: absolute; inset: 0; pointer-events: none; }
.hero__blob { position: absolute; filter: blur(70px); opacity: 0.55; border-radius: 50%; }
.hero__blob--1 { width: 480px; height: 480px; background: radial-gradient(circle, #a78bfa 0%, transparent 70%); top: -180px; left: -120px; }
.hero__blob--2 { width: 540px; height: 540px; background: radial-gradient(circle, #67e8f9 0%, transparent 70%); top: 100px; right: -160px; opacity: 0.45; }
[data-theme="dark"] .hero__blob--1 { opacity: 0.32; }
[data-theme="dark"] .hero__blob--2 { opacity: 0.25; }
.hero__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, color-mix(in srgb, var(--text) 5%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, var(--text) 5%, transparent) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 60% 60% at 50% 40%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 40%, #000 30%, transparent 80%);
  opacity: 0.5;
}
.hero__inner {
  position: relative; max-width: var(--container); margin: 0 auto;
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center;
  padding-inline: 24px;
}
@media (max-width: 980px) { .hero__inner { grid-template-columns: 1fr; gap: 48px; } }

.hero__copy h1 { margin: 18px 0 18px; }
.lede { font-size: clamp(1.05rem, 1.6vw, 1.18rem); color: var(--text-muted); max-width: 56ch; }
.hero__ctas { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 22px; }
.hero__bullets { display: flex; flex-wrap: wrap; gap: 18px; color: var(--text-muted); font-size: 0.95rem; }
.hero__bullets li { display: inline-flex; gap: 8px; align-items: center; }
.hero__bullets svg { color: var(--accent); }

.hero__card { position: relative; }
.card-glow {
  position: absolute; inset: -6% -10% -10% -6%;
  background: radial-gradient(closest-side, rgba(124, 92, 255, 0.35), transparent 80%);
  filter: blur(40px); z-index: 0;
}
.mini-card {
  position: relative; z-index: 1; background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--radius-xl); box-shadow: var(--shadow-lg); overflow: hidden;
}
.mini-card__head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; border-bottom: 1px solid var(--border); background: var(--bg-soft);
}
.dots { display: inline-flex; gap: 6px; }
.dots span { width: 10px; height: 10px; border-radius: 50%; background: var(--border-strong); }
.dots span:nth-child(1) { background: #ff5f56; }
.dots span:nth-child(2) { background: #ffbd2e; }
.dots span:nth-child(3) { background: #27c93f; }
.mini-card__label { font-size: 0.8rem; color: var(--text-soft); }
.mini-card__body { padding: 22px; display: grid; gap: 12px; }
.equation { font-family: var(--font-serif); font-size: 1.4rem; color: var(--text); }
.equation .muted { color: var(--text-soft); margin-left: 8px; font-size: 1rem; font-family: var(--font-sans); }
.step { display: flex; gap: 10px; align-items: flex-start; padding: 10px 12px; border-radius: 12px; background: var(--bg-soft); font-size: 0.95rem; }
.step__n { display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--bg-elev); border: 1px solid var(--border); font-size: 0.78rem; color: var(--text-muted); flex: none; }
.step--hl { background: var(--primary-soft); color: var(--primary); }
.step--hl .step__n { background: var(--primary); color: var(--primary-ink); border-color: var(--primary); }
.chat { margin-top: 6px; display: grid; gap: 8px; }
.bubble { padding: 10px 14px; border-radius: 14px; font-size: 0.92rem; max-width: 95%; }
.bubble--me { background: var(--bg-soft); align-self: end; border-bottom-right-radius: 6px; }
.bubble--tutor { background: var(--primary); color: var(--primary-ink); border-bottom-left-radius: 6px; }

.floaty {
  position: absolute; z-index: 2; padding: 10px 14px; border-radius: 999px;
  background: var(--bg-elev); border: 1px solid var(--border); font-weight: 600; font-size: 0.85rem;
  box-shadow: var(--shadow-md); animation: floaty 6s ease-in-out infinite;
}
.floaty--1 { top: -14px; right: -14px; }
.floaty--2 { bottom: -16px; left: -10px; animation-delay: -3s; color: var(--primary); }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ---------- Logos / social proof ---------- */
.logos { padding: 24px 0 8px; border-top: 1px solid var(--border); margin-top: 24px; }
.logos__label { text-align: center; color: var(--text-soft); font-size: 0.85rem; letter-spacing: 0.08em; text-transform: uppercase; margin: 24px 0 18px; }
.logos__row { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; padding-bottom: 24px; }
.logo-pill {
  padding: 10px 16px; border-radius: 999px; border: 1px dashed var(--border-strong);
  color: var(--text-muted); font-weight: 500; font-size: 0.92rem; background: var(--bg-elev);
}

/* ---------- Benefits ---------- */
.benefits { padding: var(--section-py) 0; }
.benefit {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 26px; transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.benefit:hover { transform: translateY(-4px); border-color: var(--primary); box-shadow: var(--shadow-md); }
.benefit__icon {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
  background: var(--primary-soft); color: var(--primary); margin-bottom: 14px;
}
.benefit p { margin-bottom: 0; }

.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 56px;
  padding: 28px; border-radius: var(--radius-lg);
  background: var(--bg-elev); border: 1px solid var(--border); box-shadow: var(--shadow-sm);
}
.stat { text-align: center; }
.stat__num { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 800; letter-spacing: -0.03em; background: var(--grad-soft); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat__label { color: var(--text-muted); font-size: 0.92rem; }
@media (max-width: 720px) { .stats { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Services ---------- */
.services { padding: var(--section-py) 0; background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--primary-soft) 30%, transparent)); }
[data-theme="dark"] .services { background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--primary-soft) 35%, transparent)); }

.service {
  position: relative; background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 28px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.service:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.service__top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; min-height: 30px; }
.service__icon { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: var(--primary-soft); color: var(--primary); }
.service__tag { font-size: 0.75rem; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: var(--grad-soft); color: #fff; }
.service h3 { font-size: 1.25rem; }
.service__list { margin: 14px 0 22px; display: grid; gap: 8px; color: var(--text-muted); font-size: 0.95rem; }
.service__list li { padding-left: 22px; position: relative; }
.service__list li::before {
  content: ""; position: absolute; left: 0; top: 6px; width: 14px; height: 14px;
  background: var(--primary-soft); border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235b3df5' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: center; background-size: 10px 10px;
}

.topics { margin-top: 56px; text-align: center; }
.topics__label { color: var(--text-soft); font-size: 0.85rem; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 14px; }
.topics__row { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.chip {
  padding: 8px 14px; border-radius: 999px; background: var(--bg-elev); border: 1px solid var(--border);
  color: var(--text-muted); font-size: 0.9rem; font-weight: 500;
}
.chip--accent { background: var(--grad-soft); color: #fff; border-color: transparent; }

/* ---------- Testimonials ---------- */
.testimonials { padding: var(--section-py) 0; }
.carousel { position: relative; overflow: hidden; padding: 6px; }
.carousel__track {
  display: flex; gap: 22px; transition: transform 600ms cubic-bezier(0.2, 0.7, 0.2, 1);
  will-change: transform;
}
.quote {
  flex: 0 0 calc((100% - 44px) / 3); background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 26px; box-shadow: var(--shadow-sm);
}
@media (max-width: 900px) { .quote { flex-basis: calc((100% - 22px) / 2); } }
@media (max-width: 600px) { .quote { flex-basis: 100%; } }
.quote__rate { color: #ffba2c; letter-spacing: 2px; font-size: 0.95rem; margin-bottom: 12px; }
.quote blockquote { margin: 0 0 16px; font-size: 1.02rem; color: var(--text); line-height: 1.55; }
.quote__who { display: flex; align-items: center; gap: 12px; }
.quote__who strong { display: block; }
.quote__who span { color: var(--text-soft); font-size: 0.85rem; }
.avatar {
  width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center;
  font-weight: 700; color: #fff; flex: none; font-size: 0.9rem;
}
.avatar--a { background: linear-gradient(135deg, #f472b6, #f43f5e); }
.avatar--b { background: linear-gradient(135deg, #6366f1, #06b6d4); }
.avatar--c { background: linear-gradient(135deg, #14b8a6, #84cc16); }
.avatar--d { background: linear-gradient(135deg, #fb923c, #ef4444); }
.avatar--e { background: linear-gradient(135deg, #8b5cf6, #ec4899); }

.carousel__controls { display: flex; align-items: center; justify-content: center; gap: 16px; margin-top: 28px; }
.carousel__btn {
  width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center;
  background: var(--bg-elev); border: 1px solid var(--border); color: var(--text);
  transition: all var(--transition);
}
.carousel__btn:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
.carousel__dots { display: flex; gap: 8px; }
.carousel__dots button { width: 8px; height: 8px; border-radius: 50%; background: var(--border-strong); transition: all var(--transition); }
.carousel__dots button.is-active { background: var(--primary); width: 22px; border-radius: 999px; }

/* ---------- Pricing ---------- */
.pricing { padding: var(--section-py) 0; }
.pricing__grid { align-items: stretch; }
.plan {
  position: relative; background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 28px; display: flex; flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}
.plan:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.plan--featured {
  border: 2px solid transparent; background:
    linear-gradient(var(--bg-elev), var(--bg-elev)) padding-box,
    var(--grad-soft) border-box;
  box-shadow: 0 22px 60px -22px rgba(124, 92, 255, 0.4);
  transform: translateY(-6px);
}
.plan__ribbon {
  position: absolute; top: -14px; right: 24px;
  background: var(--grad-soft); color: #fff; font-size: 0.78rem; font-weight: 600;
  padding: 6px 12px; border-radius: 999px;
}
.plan__head h3 { margin-bottom: 4px; }
.plan__sub { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 18px; }
.plan__price { display: flex; align-items: baseline; gap: 6px; margin: 8px 0 18px; }
.plan__amt { font-size: 2.4rem; font-weight: 800; letter-spacing: -0.03em; }
.plan__per { color: var(--text-muted); }
.plan__list { display: grid; gap: 10px; margin: 12px 0 24px; color: var(--text-muted); font-size: 0.95rem; flex: 1; }
.plan__list li { padding-left: 26px; position: relative; }
.plan__list li::before {
  content: ""; position: absolute; left: 0; top: 4px; width: 16px; height: 16px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2308a6c8' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-size: 16px;
}
.pricing__note { text-align: center; margin-top: 28px; color: var(--text-muted); }
.pricing__note a { color: var(--primary); text-decoration: underline; }

/* ---------- FAQ ---------- */
.faq { padding: var(--section-py) 0; }
.faq__container { display: grid; grid-template-columns: 1fr 1.4fr; gap: 56px; align-items: start; }
@media (max-width: 900px) { .faq__container { grid-template-columns: 1fr; gap: 32px; } }
.faq__intro h2 { margin-top: 14px; }
.faq__list { display: grid; gap: 12px; }
.faq__item {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 4px 18px; transition: border-color var(--transition), box-shadow var(--transition);
}
.faq__item[open] { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.faq__item summary {
  list-style: none; cursor: pointer; padding: 16px 36px 16px 0;
  font-weight: 600; color: var(--text); position: relative; user-select: none;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: ""; position: absolute; right: 4px; top: 50%; transform: translateY(-50%) rotate(0deg);
  width: 12px; height: 12px;
  border-right: 2px solid var(--text-muted); border-bottom: 2px solid var(--text-muted);
  transform-origin: 60% 60%; transition: transform var(--transition);
  transform: translateY(-70%) rotate(45deg);
}
.faq__item[open] summary::after { transform: translateY(-30%) rotate(225deg); border-color: var(--primary); }
.faq__item p { padding: 0 0 18px; color: var(--text-muted); margin: 0; }

/* ---------- Final CTA ---------- */
.final-cta { padding: 0 0 var(--section-py); }
.final-cta__card {
  position: relative; overflow: hidden; border-radius: var(--radius-xl); padding: clamp(36px, 6vw, 64px);
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px; align-items: center;
  background: var(--bg-elev); border: 1px solid var(--border); box-shadow: var(--shadow-lg);
}
.final-cta__bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at top left, rgba(124, 92, 255, 0.18), transparent 60%),
    radial-gradient(ellipse at bottom right, rgba(34, 211, 238, 0.18), transparent 60%);
  pointer-events: none;
}
.final-cta__copy { position: relative; }
.final-cta__copy h2 { margin-bottom: 10px; }
.final-cta__actions { position: relative; display: flex; gap: 12px; flex-wrap: wrap; justify-content: flex-end; }
@media (max-width: 800px) {
  .final-cta__card { grid-template-columns: 1fr; }
  .final-cta__actions { justify-content: flex-start; }
}

/* ---------- Contact ---------- */
.contact { padding: var(--section-py) 0; background: var(--bg-soft); }
.contact__inner { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: start; }
@media (max-width: 900px) { .contact__inner { grid-template-columns: 1fr; gap: 32px; } }

.contact__copy h2 { margin-top: 14px; }
.contact__meta { display: grid; gap: 14px; margin-top: 18px; }
.contact__meta li { display: flex; align-items: center; gap: 12px; color: var(--text-muted); }
.contact__icon { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px; background: var(--bg-elev); border: 1px solid var(--border); color: var(--primary); }

.contact__form {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px; box-shadow: var(--shadow-md); display: grid; gap: 14px;
}
.form-row { display: grid; gap: 6px; }
.form-row label { font-weight: 600; font-size: 0.92rem; }
.form-row input, .form-row select, .form-row textarea {
  width: 100%; padding: 12px 14px; border-radius: 12px;
  border: 1px solid var(--border-strong); background: var(--bg);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: var(--ring);
}
.form-row textarea { resize: vertical; min-height: 110px; }
.checkbox { display: flex; align-items: flex-start; gap: 10px; font-size: 0.92rem; color: var(--text-muted); cursor: pointer; }
.checkbox input { width: 18px; height: 18px; accent-color: var(--primary); margin-top: 2px; }
.form-note { font-size: 0.88rem; margin: 0; color: var(--text-soft); min-height: 1em; }
.form-note.is-success { color: #16a34a; }
.form-note.is-error { color: #dc2626; }

/* ---------- Newsletter ---------- */
.newsletter { padding: var(--section-py) 0; }
.newsletter__inner {
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 36px; align-items: center;
  background:
    linear-gradient(var(--bg-elev), var(--bg-elev)) padding-box,
    var(--grad-soft) border-box;
  border: 2px solid transparent;
  border-radius: var(--radius-xl); padding: clamp(28px, 5vw, 48px);
  box-shadow: var(--shadow-lg);
}
@media (max-width: 800px) { .newsletter__inner { grid-template-columns: 1fr; gap: 18px; } }
.newsletter__copy h2 { margin-bottom: 8px; }
.newsletter__form { display: grid; grid-template-columns: 1fr auto; gap: 10px; }
.newsletter__form input {
  padding: 14px 16px; border-radius: 12px; border: 1px solid var(--border-strong); background: var(--bg);
}
.newsletter__form input:focus { outline: none; border-color: var(--primary); box-shadow: var(--ring); }
.newsletter__form .form-note { grid-column: 1 / -1; }
@media (max-width: 480px) { .newsletter__form { grid-template-columns: 1fr; } }

/* ---------- Footer ---------- */
.footer { padding: 64px 0 28px; border-top: 1px solid var(--border); background: var(--bg-elev); }
.footer__grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 32px; }
@media (max-width: 800px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .footer__grid { grid-template-columns: 1fr; } }
.footer h4 { font-size: 0.95rem; margin-bottom: 14px; color: var(--text); }
.footer ul { display: grid; gap: 8px; }
.footer ul a { color: var(--text-muted); font-size: 0.93rem; }
.footer ul a:hover { color: var(--primary); }
.footer__tag { color: var(--text-muted); font-size: 0.93rem; margin: 14px 0 18px; max-width: 36ch; }
.socials { display: flex; gap: 10px; }
.socials a {
  display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px;
  background: var(--bg-soft); border: 1px solid var(--border); color: var(--text-muted);
  transition: all var(--transition);
}
.socials a:hover { color: var(--primary); border-color: var(--primary); transform: translateY(-2px); }

.footer__bottom { margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; color: var(--text-soft); font-size: 0.88rem; }
.footer__legal { display: flex; gap: 18px; }
.footer__legal a:hover { color: var(--primary); }

/* ---------- Language switcher ---------- */
.lang-switch {
  display: inline-flex; padding: 3px; gap: 2px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--bg-elev);
}
.lang-switch button {
  padding: 6px 10px; font-size: 0.78rem; font-weight: 600; color: var(--text-muted);
  border-radius: 999px; transition: all var(--transition); letter-spacing: 0.04em;
}
.lang-switch button:hover { color: var(--text); }
.lang-switch button.is-active { background: var(--primary); color: var(--primary-ink); }
@media (max-width: 880px) {
  .lang-switch { order: 2; }
}

/* ---------- Tutor / About section ---------- */
.tutor { padding: var(--section-py) 0; }
.tutor__inner {
  display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 56px; align-items: center;
  max-width: var(--container); margin: 0 auto; padding-inline: 24px;
}
@media (max-width: 880px) { .tutor__inner { grid-template-columns: 1fr; gap: 40px; } }

.tutor__photo { position: relative; }
.tutor__photo-wrap {
  position: relative; aspect-ratio: 4/5; border-radius: var(--radius-xl);
  overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 15%, var(--bg-elev)), var(--bg-elev));
}
.tutor__photo-wrap img { width: 100%; height: 100%; object-fit: cover; }
.tutor__photo-fallback {
  position: absolute; inset: 0; display: grid; place-items: center;
  font-family: var(--font-serif); font-size: 6rem; color: var(--primary);
  background: linear-gradient(135deg, var(--primary-soft), var(--bg-elev));
}
.tutor__photo::before {
  content: ""; position: absolute; inset: -16px; z-index: -1; border-radius: var(--radius-xl);
  background: var(--grad-soft); filter: blur(50px); opacity: 0.4;
}
.tutor__badges {
  position: absolute; bottom: 18px; left: 18px; display: flex; gap: 8px; flex-wrap: wrap;
}
.badge {
  display: inline-flex; align-items: center; gap: 6px; padding: 7px 12px;
  border-radius: 999px; background: rgba(255,255,255,0.92); color: #0b1020;
  font-size: 0.78rem; font-weight: 600; backdrop-filter: blur(8px);
  box-shadow: 0 6px 14px -6px rgba(0,0,0,0.25);
}
[data-theme="dark"] .badge { background: rgba(20,24,40,0.92); color: var(--text); }

.tutor__copy h2 { margin-top: 14px; }
.tutor__role {
  display: inline-block; padding: 6px 12px; border-radius: 999px;
  background: var(--primary-soft); color: var(--primary);
  font-weight: 600; font-size: 0.88rem; margin-bottom: 14px;
}
.tutor__contact {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 22px;
  padding-top: 22px; border-top: 1px solid var(--border);
}
.tutor__contact-item {
  display: inline-flex; gap: 8px; align-items: center;
  padding: 10px 14px; border-radius: 12px; background: var(--bg-elev);
  border: 1px solid var(--border); color: var(--text); font-weight: 500; font-size: 0.93rem;
  transition: all var(--transition);
}
.tutor__contact-item:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); }
.tutor__contact-item svg { color: var(--primary); }

/* ---------- Mechanics section ---------- */
.mech { padding: var(--section-py) 0; background: var(--bg-soft); }
.mech__inner {
  display: grid; grid-template-columns: 1fr 1.4fr; gap: 56px; align-items: start;
}
@media (max-width: 980px) { .mech__inner { grid-template-columns: 1fr; gap: 36px; } }
.mech__copy { position: sticky; top: 100px; }
@media (max-width: 980px) { .mech__copy { position: static; } }
.mech__copy h2 { margin-top: 14px; }
.mech__copy .btn { margin-top: 8px; }
.mech__cards {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
}
@media (max-width: 600px) { .mech__cards { grid-template-columns: 1fr; } }
.mech-card {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px; transition: transform var(--transition), border-color var(--transition);
}
.mech-card:hover { transform: translateY(-3px); border-color: var(--primary); }
.mech-card__icon { font-size: 1.6rem; margin-bottom: 8px; }
.mech-card h4 { font-size: 1.05rem; margin-bottom: 6px; }
.mech-card p { font-size: 0.92rem; margin: 0; }

/* Service tag variants */
.service__tag--alt { background: var(--grad-warm); }

/* ---------- Back to top ---------- */
.to-top {
  position: fixed; bottom: 22px; right: 22px; width: 44px; height: 44px; border-radius: 50%;
  display: grid; place-items: center; background: var(--primary); color: #fff;
  box-shadow: var(--shadow-md); z-index: 40;
  transform: translateY(20px) scale(0.9); opacity: 0; pointer-events: none;
  transition: transform var(--transition), opacity var(--transition), background var(--transition);
}
.to-top:hover { background: #4f33da; }
.to-top.is-visible { transform: translateY(0) scale(1); opacity: 1; pointer-events: auto; }