/* StudyHop landing — light palette + sage accent.
 * Источник цветов: partner-web/src/styles.css (тот же дизайн-язык).
 * Self-hosted fonts (Fraunces / Geist / Geist Mono) — без CDN, без 3rd-party tracking.
 */

@font-face {
  font-family: "Fraunces";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/Fraunces-Regular.ttf") format("truetype");
}
@font-face {
  font-family: "Fraunces";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/assets/fonts/Fraunces-SemiBold.ttf") format("truetype");
}
@font-face {
  font-family: "Fraunces";
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/Fraunces-Italic.ttf") format("truetype");
}
@font-face {
  font-family: "Geist";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/Geist-Regular.ttf") format("truetype");
}
@font-face {
  font-family: "Geist";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("/assets/fonts/Geist-Medium.ttf") format("truetype");
}
@font-face {
  font-family: "Geist";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/assets/fonts/Geist-SemiBold.ttf") format("truetype");
}
@font-face {
  font-family: "Geist Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/GeistMono-Regular.ttf") format("truetype");
}

:root {
  /* Surfaces */
  --paper:        #F3EEE2;
  --paper-deep:   #ECE6D6;
  --surface:      #FFFFFF;
  --surface-2:    #FAF6EC;
  --border:       #E6E1D4;
  --border-hi:    #D4CFC0;

  /* Ink */
  --text:         #15120E;
  --text-muted:   #5C5448;
  --text-subtle:  #8A8275;
  --text-dim:     #B8B0A0;

  /* Sage accent */
  --sage:         #9EAE9A;
  --sage-deep:    #7A8F74;
  --sage-soft:    #C8D2C4;
  --sage-fg:      #15120E;

  /* Radius / spacing */
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-full: 999px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-7: 32px;
  --sp-8: 40px;
  --sp-9: 56px;
  --sp-10: 80px;
  --sp-11: 120px;

  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(33, 28, 16, 0.04);
  --shadow:    0 2px 8px rgba(33, 28, 16, 0.06), 0 1px 2px rgba(33, 28, 16, 0.04);
  --shadow-md: 0 6px 16px rgba(33, 28, 16, 0.08), 0 2px 4px rgba(33, 28, 16, 0.04);
  --shadow-lg: 0 24px 60px rgba(33, 28, 16, 0.12);

  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-sans:    "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono:    "Geist Mono", ui-monospace, SFMono-Regular, monospace;

  --content-max: 1100px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--sage-deep); text-decoration: none; }
a:hover { text-decoration: underline; }

img, svg { display: block; max-width: 100%; }

/* ---------- Header ---------- */

.site-header {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--sp-5) var(--sp-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  color: var(--text);
}
.brand:hover { text-decoration: none; }

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: var(--r-md);
  box-shadow: var(--shadow-sm);
}

.brand-word {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 28px;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.site-nav a {
  font-size: 15px;
  color: var(--text-muted);
  font-weight: 500;
}
.site-nav a:hover { color: var(--text); }

/* ---------- Hero ---------- */

.hero {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--sp-9) var(--sp-6) var(--sp-10);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-9);
  align-items: center;
}

@media (min-width: 880px) {
  .hero { grid-template-columns: 1.15fr 1fr; gap: var(--sp-10); }
}

.hero-mark {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(56px, 9vw, 96px);
  line-height: 1;
  letter-spacing: -0.02em;
  display: inline-block;
}

.hero-title { margin: 0 0 var(--sp-4); }

.hero-sub {
  margin: 0 0 var(--sp-5);
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.25;
  color: var(--text);
  letter-spacing: -0.01em;
}

.hero-lead {
  margin: 0 0 var(--sp-7);
  font-size: clamp(16px, 1.8vw, 18px);
  color: var(--text-muted);
  max-width: 30em;
}

/* Store badges (ненажимаемые «coming soon» pills) */

.store-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-bottom: var(--sp-5);
}

.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px 12px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-sm);
  cursor: default;
  user-select: none;
  opacity: 0.95;
}

.store-badge-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--r-sm);
  background: var(--text);
  color: var(--paper);
  flex-shrink: 0;
}

/* Play иконка — официальная цветная, фон прозрачный */
.store-badge[data-store="googleplay"] .store-badge-icon {
  background: transparent;
  width: 36px;
  height: 36px;
}
.store-badge[data-store="googleplay"] .store-badge-icon img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.store-badge-text {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1px;
  line-height: 1.1;
}

.store-badge-kicker {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-subtle);
}

.store-badge-name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
}

.hero-meta {
  margin: 0;
  font-size: 14px;
  color: var(--text-subtle);
}

/* ---------- Hero mockup (CSS phone) ---------- */

.hero-mockup {
  display: flex;
  justify-content: center;
}

.phone-frame {
  width: 280px;
  background: #15120E;
  border-radius: 36px;
  padding: 12px;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.phone-notch {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 22px;
  background: #15120E;
  border-radius: 0 0 14px 14px;
  z-index: 2;
}

.phone-screen {
  background: #0A0906;
  border-radius: 28px;
  overflow: hidden;
  height: 540px;
  color: #F5F3EE;
  font-family: var(--font-sans);
  position: relative;
  display: flex;
  flex-direction: column;
}

.screen-statusbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 22px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: #C9BFAE;
}
.status-dots { display: flex; gap: 3px; }
.status-dots .dot {
  width: 4px;
  height: 4px;
  background: #C9BFAE;
  border-radius: 50%;
  display: inline-block;
}

.screen-navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 16px 10px;
  border-bottom: 1px solid #241F19;
}
.screen-back { color: var(--sage); font-size: 22px; line-height: 1; }
.screen-title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
}
.screen-action { width: 22px; }

.screen-content {
  padding: 16px 14px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.bubble {
  padding: 10px 12px;
  border-radius: 14px;
  font-size: 13px;
  line-height: 1.4;
  max-width: 86%;
}

.bubble-kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--sage);
  margin-bottom: 4px;
}

.bubble-user {
  align-self: flex-end;
  background: rgba(158, 174, 154, 0.18);
  border: 1px solid rgba(158, 174, 154, 0.35);
}

.bubble-ai {
  align-self: flex-start;
  background: #15120E;
  border: 1px solid #241F19;
}

.record-area {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 16px;
  gap: 8px;
}

.record-button {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--sage);
  position: relative;
  box-shadow: 0 0 0 8px rgba(158, 174, 154, 0.18);
}
.record-button::before {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  width: 22px;
  height: 22px;
  background: #110F0B;
  border-radius: 8px;
  transform: translate(-50%, -50%);
}

.record-hint {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #8A8275;
}

/* ---------- Section title (общий) ---------- */

.section-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(28px, 4.2vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--text);
  margin: 0 0 var(--sp-5);
}

.kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--sage-deep);
  margin-bottom: var(--sp-3);
}

/* ---------- Features grid ---------- */

.features {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--sp-10) var(--sp-6);
}

.feature-grid {
  display: grid;
  gap: var(--sp-5);
  grid-template-columns: 1fr;
}

@media (min-width: 760px) {
  .feature-grid { grid-template-columns: repeat(3, 1fr); gap: var(--sp-6); }
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--sp-6);
  box-shadow: var(--shadow-sm);
}

.feature-card h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  margin: var(--sp-4) 0 var(--sp-2);
  color: var(--text);
}

.feature-card p {
  margin: 0;
  font-size: 16px;
  color: var(--text-muted);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--r-md);
  background: var(--sage-soft);
  color: var(--sage-deep);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- AI note ---------- */

.ai-note {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--sp-9) var(--sp-6) 0;
}

.ai-note p {
  margin: 0;
  padding: var(--sp-5) var(--sp-6);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  color: var(--text-muted);
  font-size: 15px;
  max-width: 720px;
}

.ai-note strong {
  color: var(--text);
  font-weight: 600;
}

/* ---------- CTA ---------- */

.cta {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--sp-10) var(--sp-6);
  text-align: center;
}

.cta p {
  font-size: 16px;
  color: var(--text-muted);
  margin: 0 0 var(--sp-6);
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  background: var(--sage-deep);
  color: #FFFFFF;
  border-radius: var(--r-full);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: transform 0.16s ease, background 0.16s ease;
}
.cta-btn:hover {
  background: #65795F;
  text-decoration: none;
  transform: translateY(-1px);
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--surface-2);
  border-top: 1px solid var(--border);
  padding: var(--sp-9) var(--sp-6) var(--sp-7);
  font-size: 14px;
  color: var(--text-muted);
}

.footer-grid {
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  gap: var(--sp-7);
  grid-template-columns: 1fr;
}

@media (min-width: 760px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
}

.footer-brand {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
}
.footer-brand .brand-logo {
  width: 44px;
  height: 44px;
  border-radius: var(--r-md);
  flex-shrink: 0;
}
.footer-word {
  display: block;
  font-size: 22px;
  line-height: 1;
  margin-top: 4px;
}

.footer-legal-name {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-subtle);
  letter-spacing: 0.02em;
}

.footer-address {
  margin: var(--sp-2) 0 0;
  font-size: 13px;
  color: var(--text-subtle);
  line-height: 1.4;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}
.footer-col a {
  color: var(--text-muted);
  font-size: 14px;
}
.footer-col a:hover { color: var(--text); }

.footer-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-subtle);
  margin-bottom: var(--sp-1);
}

.footer-meta {
  max-width: var(--content-max);
  margin: var(--sp-7) auto 0;
  padding-top: var(--sp-5);
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  font-size: 13px;
  color: var(--text-subtle);
  align-items: center;
}

.footer-divider { color: var(--text-dim); }

.age-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 22px;
  padding: 0 6px;
  border: 1px solid var(--border-hi);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
}

/* ---------- Legal pages (privacy/terms/subprocessors) ---------- */

.legal-page {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--sp-9) var(--sp-6) var(--sp-10);
}

.legal-page h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(28px, 4.2vw, 38px);
  line-height: 1.2;
  margin: 0 0 var(--sp-4);
  letter-spacing: -0.015em;
}

.legal-page h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  margin: var(--sp-8) 0 var(--sp-3);
  color: var(--text);
}

.legal-page h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 17px;
  margin: var(--sp-6) 0 var(--sp-2);
}

.legal-page p,
.legal-page li {
  font-size: 16px;
  color: var(--text-muted);
}

.legal-page ul, .legal-page ol { padding-left: 1.4em; }
.legal-page li { margin-bottom: 0.4em; }

.legal-page .meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-subtle);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.legal-page table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--sp-4) 0;
  font-size: 14px;
}

.legal-page th, .legal-page td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.legal-page th {
  background: var(--surface-2);
  font-weight: 600;
  color: var(--text);
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}