/* EXPO ASSISTANT — product UI (mockup-aligned) */
:root,
[data-theme="dark"] {
  --ex-bg: #0a0a0a;
  --ex-panel: #141414;
  --ex-ink: #f5f5f5;
  --ex-mute: #8a8a8a;
  --ex-line: rgba(255, 255, 255, 0.08);
  --ex-accent: #ff5a1f;
  --ex-accent-dim: rgba(255, 90, 31, 0.35);
  --ex-font: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

[data-theme="light"] {
  --ex-bg: #f3f3f5;
  --ex-panel: #ffffff;
  --ex-ink: #121212;
  --ex-mute: #6a6a6a;
  --ex-line: rgba(0, 0, 0, 0.08);
  --ex-accent: #e04812;
  --ex-accent-dim: rgba(224, 72, 18, 0.25);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body.expo-page {
  min-height: 100%;
  background: var(--ex-bg);
  color: var(--ex-ink);
  font-family: var(--ex-font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ── Drag & drop overlay ─────────────────────────────────── */
.expo-dropzone {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  background: rgba(8, 8, 8, 0.78);
  backdrop-filter: blur(3px);
  pointer-events: none;
}
.expo-dropzone[hidden] { display: none !important; }
.expo-dropzone span {
  border: 2px dashed var(--ex-accent);
  border-radius: 18px;
  padding: 2.2rem 3rem;
  font-size: 1.05rem;
  color: #fff;
  letter-spacing: 0.04em;
  box-shadow: 0 0 48px var(--ex-accent-dim);
}

/* ── Shell ───────────────────────────────────────────────── */
.expo-shell {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 100vh;
}
.expo-shell[hidden] { display: none !important; }

.expo-nav {
  border-right: 1px solid var(--ex-line);
  background: #080808;
  padding: 1.25rem 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.expo-logo {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: inherit;
  padding: 0.25rem 0.4rem;
}
.expo-logo img {
  width: 28px;
  height: 28px;
}
.expo-hero-gate {
  width: 52px;
  height: 52px;
  margin-bottom: 0.75rem;
}
[data-theme="light"] .expo-hero-gate {
  filter: invert(1);
}
.expo-logo strong {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.28em;
}
.expo-logo em {
  font-style: normal;
  font-size: 0.58rem;
  letter-spacing: 0.35em;
  color: var(--ex-accent);
}

.expo-nav-list { display: flex; flex-direction: column; gap: 0.2rem; }
.expo-nav-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 0.7rem;
  border-radius: 10px;
  color: var(--ex-mute);
  text-decoration: none;
  font-size: 0.88rem;
  transition: background 0.15s, color 0.15s;
}
.expo-nav-item:hover { color: var(--ex-ink); }
.expo-nav-item.is-active {
  background: rgba(255, 255, 255, 0.06);
  color: var(--ex-ink);
}
.expo-nav-item.is-active .ico { color: var(--ex-accent); }
.ico {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.9;
}
.expo-nav-home .ico { width: 15px; height: 15px; }

/* Сайдбар всегда тёмный — в светлой теме текст остаётся светлым */
[data-theme="light"] .expo-nav .expo-nav-item { color: #9a9aa2; }
[data-theme="light"] .expo-nav .expo-nav-item:hover,
[data-theme="light"] .expo-nav .expo-nav-item.is-active { color: #f5f5f5; }
[data-theme="light"] .expo-nav .expo-nav-item.is-active { background: rgba(255, 255, 255, 0.08); }
[data-theme="light"] .expo-nav .expo-logo strong { color: #f5f5f5; }
[data-theme="light"] .expo-nav .expo-theme { color: #9a9aa2; }
[data-theme="light"] .expo-nav .expo-login { color: #9a9aa2; }
[data-theme="light"] .expo-nav .expo-login:hover { color: #f5f5f5; }
[data-theme="light"] .expo-nav .expo-lang {
  color: #9a9aa2;
  border-color: rgba(255, 255, 255, 0.16);
}
[data-theme="light"] .expo-nav .expo-switch { background: #444; }

.expo-nav-foot {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 0 0.35rem;
}
.expo-theme {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  border: 0;
  color: var(--ex-mute);
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  padding: 0.35rem 0;
}
.expo-switch {
  width: 34px;
  height: 18px;
  border-radius: 99px;
  background: #333;
  position: relative;
}
.expo-switch::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #888;
  transition: left 0.2s, background 0.2s;
}
[data-theme="dark"] .expo-switch { background: rgba(255,90,31,0.35); }
[data-theme="dark"] .expo-switch::after {
  left: 18px;
  background: var(--ex-accent);
}
.expo-login, .expo-login-top {
  color: var(--ex-mute);
  text-decoration: none;
  font-size: 0.82rem;
}
.expo-login:hover, .expo-login-top:hover { color: var(--ex-ink); }
.expo-lang, .expo-lang-top {
  align-self: flex-start;
  background: transparent;
  border: 1px solid var(--ex-line);
  color: var(--ex-mute);
  border-radius: 6px;
  padding: 0.25rem 0.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  cursor: pointer;
}
.expo-lang:hover, .expo-lang-top:hover { color: var(--ex-ink); }

.expo-main {
  padding: 1rem 1.5rem 2.5rem;
  max-width: 920px;
  margin: 0 auto;
  width: 100%;
}
.expo-logo small {
  display: block;
  font-size: 0.55rem;
  letter-spacing: 0.08em;
  color: var(--ex-mute);
  margin-top: 0.15rem;
}
.ew-ru {
  margin-top: 0.45rem;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--ex-mute);
}
.ew-core {
  margin-top: 0.25rem;
  font-size: 0.85rem;
  letter-spacing: 0.55em;
  color: var(--ex-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}
.ew-core span {
  display: block;
  width: 2rem;
  height: 1px;
  background: rgba(255,90,31,0.5);
}
.expo-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.expo-top-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.expo-back {
  color: var(--ex-mute);
  text-decoration: none;
  font-size: 0.8rem;
  border: 1px solid var(--ex-line);
  border-radius: 8px;
  padding: 0.35rem 0.65rem;
}
.expo-back:hover { color: var(--ex-ink); border-color: var(--ex-accent); }
.expo-nav-home {
  margin-top: 0.5rem;
  border-top: 1px solid var(--ex-line);
  padding-top: 0.75rem !important;
  border-radius: 0 !important;
}
.expo-hero {
  text-align: center;
  padding: 1rem 0 2rem;
}
.expo-wordmark { margin-bottom: 1.25rem; }
.ew-zarox {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 600;
  letter-spacing: 0.35em;
  margin-left: 0.35em;
}
.ew-core {
  margin-top: 0.25rem;
  font-size: 0.85rem;
  letter-spacing: 0.55em;
  color: var(--ex-accent);
}
.expo-hero h1 {
  font-weight: 500;
  font-size: clamp(1.25rem, 2.6vw, 1.7rem);
  margin-bottom: 0.55rem;
}
.expo-hero > p {
  color: var(--ex-mute);
  font-size: 0.95rem;
  max-width: 28rem;
  margin: 0 auto 1.25rem;
  line-height: 1.5;
}
.expo-horizon {
  height: 1px;
  width: min(420px, 70%);
  margin: 0 auto 1.75rem;
  background: linear-gradient(90deg, transparent, var(--ex-accent), transparent);
  box-shadow: 0 0 18px var(--ex-accent-dim);
}

.expo-composer {
  text-align: left;
  background: var(--ex-panel);
  border: 1px solid var(--ex-line);
  border-radius: 18px;
  padding: 0.85rem 0.95rem 0.75rem;
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
  position: relative;
}
.expo-composer textarea {
  width: 100%;
  border: 0;
  outline: none;
  resize: none;
  background: transparent;
  color: var(--ex-ink);
  font: inherit;
  font-size: 0.98rem;
  line-height: 1.45;
  min-height: 4.5rem;
}
.expo-composer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 0.5rem;
}
.expo-composer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.expo-chip {
  background: transparent;
  border: 0;
  color: var(--ex-mute);
  font: inherit;
  font-size: 0.78rem;
  padding: 0.35rem 0.5rem;
  border-radius: 8px;
  cursor: pointer;
}
.expo-chip:hover {
  color: var(--ex-ink);
  background: rgba(255,255,255,0.04);
}
.expo-send {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 0;
  background: var(--ex-accent);
  color: #fff;
  font-size: 1.15rem;
  cursor: pointer;
  flex-shrink: 0;
  box-shadow: 0 0 24px var(--ex-accent-dim);
}
.expo-send:disabled { opacity: 0.5; cursor: wait; }
.expo-files {
  margin-top: 0.4rem;
  font-size: 0.72rem;
  color: var(--ex-mute);
}

.expo-result {
  margin-top: 1.25rem;
  text-align: left;
  padding: 1rem 1.1rem;
  border-radius: 14px;
  border: 1px solid var(--ex-line);
  background: var(--ex-panel);
  display: none;
}
.expo-result.visible { display: block; }
.expo-result .total {
  font-size: 1.6rem;
  font-weight: 600;
  margin: 0.4rem 0;
  color: var(--ex-accent);
}
.expo-result .margin { color: var(--ex-mute); font-size: 0.88rem; }

.expo-feats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
  text-align: center;
}
.expo-feats .ef-ico {
  color: var(--ex-accent);
  font-size: 1.2rem;
  margin-bottom: 0.45rem;
}
.expo-feats strong {
  display: block;
  font-weight: 500;
  margin-bottom: 0.3rem;
}
.expo-feats p {
  color: var(--ex-mute);
  font-size: 0.82rem;
  line-height: 1.4;
}

@media (max-width: 860px) {
  .expo-shell { grid-template-columns: 1fr; }
  .expo-nav {
    border-right: 0;
    border-bottom: 1px solid var(--ex-line);
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 0.9rem;
  }
  .expo-nav-list { flex-direction: row; flex-wrap: wrap; width: 100%; gap: 0.15rem; }
  .expo-nav-item { padding: 0.45rem 0.6rem; font-size: 0.82rem; }
  .expo-nav-home {
    margin-top: 0;
    border-top: 0;
    padding-top: 0.45rem !important;
    border-radius: 10px !important;
  }
  .expo-nav-foot {
    width: 100%;
    flex-direction: row;
    align-items: center;
    gap: 1rem;
    margin-top: 0;
  }
  .expo-feats { grid-template-columns: 1fr; gap: 1.5rem; }
  .expo-main { padding: 0.85rem 1rem 2rem; }
  .expo-hero { padding: 0.5rem 0 1.5rem; }
}

@media (max-width: 480px) {
  .expo-composer { border-radius: 14px; padding: 0.7rem 0.75rem 0.6rem; }
  .expo-composer textarea { font-size: 16px; min-height: 3.8rem; }
  .expo-send { width: 38px; height: 38px; }
  .expo-top { flex-wrap: wrap; gap: 0.5rem; }
  .expo-dropzone span { padding: 1.4rem 1.6rem; font-size: 0.92rem; text-align: center; }
}