/* Γιαννι τσατ GTP — η κλεμμένη αισθητική. */

:root {
  --bg: #ffffff;
  --bg-side: #f9f9f9;
  --bg-hover: #ececec;
  --bg-user: #f4f4f4;
  --bg-composer: #ffffff;
  --bg-chip: #f4f4f4;
  --text: #0d0d0d;
  --text-mid: #5d5d5d;
  --text-dim: #8f8f8f;
  --border: #e5e5e5;
  --border-strong: #d9d9d9;
  --accent: #0d0d0d;
  --accent-fg: #ffffff;
  --shadow: 0 2px 12px rgba(0,0,0,.06);
  --radius: 26px;
  --font: ui-sans-serif, -apple-system, "Segoe UI", "Helvetica Neue", Arial,
          "Noto Sans", "Liberation Sans", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #212121;
    --bg-side: #171717;
    --bg-hover: #2f2f2f;
    --bg-user: #303030;
    --bg-composer: #303030;
    --bg-chip: #2f2f2f;
    --text: #ececec;
    --text-mid: #b4b4b4;
    --text-dim: #8f8f8f;
    --border: #353535;
    --border-strong: #444;
    --accent: #ffffff;
    --accent-fg: #0d0d0d;
    --shadow: 0 2px 12px rgba(0,0,0,.3);
  }
}
:root[data-theme="dark"] {
  --bg: #212121;
  --bg-side: #171717;
  --bg-hover: #2f2f2f;
  --bg-user: #303030;
  --bg-composer: #303030;
  --bg-chip: #2f2f2f;
  --text: #ececec;
  --text-mid: #b4b4b4;
  --text-dim: #8f8f8f;
  --border: #353535;
  --border-strong: #444;
  --accent: #ffffff;
  --accent-fg: #0d0d0d;
  --shadow: 0 2px 12px rgba(0,0,0,.3);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}
button { font-family: inherit; cursor: pointer; -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 2px solid var(--text-mid); outline-offset: 2px; border-radius: 6px; }

/* ── ΣΚΕΛΕΤΟΣ ────────────────────────────────────────────────────── */
.app { display: flex; height: 100dvh; }

/* ── SIDEBAR ─────────────────────────────────────────────────────── */
.side {
  width: 260px;
  flex: 0 0 260px;
  background: var(--bg-side);
  display: flex;
  flex-direction: column;
  padding: 8px;
  gap: 2px;
  transition: margin-left .25s ease;
}
.side.hidden { margin-left: -260px; }

.side-top { display: flex; align-items: center; justify-content: space-between; padding: 4px 4px 8px; }
.icon-btn {
  background: none; border: 0; color: var(--text-mid);
  width: 34px; height: 34px; border-radius: 8px;
  display: grid; place-items: center; padding: 0;
}
.icon-btn:hover { background: var(--bg-hover); color: var(--text); }
.icon-btn svg { width: 20px; height: 20px; }

.new-chat {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: 10px;
  color: var(--text); background: none; border: 0;
  font-size: 14px; font-weight: 500; text-align: left; width: 100%;
}
.new-chat:hover { background: var(--bg-hover); }
.new-chat svg { width: 18px; height: 18px; flex: 0 0 18px; }

.side-label {
  font-size: 12px; color: var(--text-dim);
  padding: 16px 10px 6px; font-weight: 500;
}
.side-list { overflow-y: auto; flex: 1; }
.side-item {
  display: block; width: 100%; text-align: left;
  padding: 8px 10px; border-radius: 10px;
  font-size: 14px; color: var(--text); background: none; border: 0;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.side-item:hover { background: var(--bg-hover); }
.side-item.active { background: var(--bg-hover); }

.side-foot { border-top: 1px solid var(--border); padding-top: 8px; }
.side-user {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: 10px; width: 100%;
  background: none; border: 0; color: var(--text); font-size: 14px; text-align: left;
}
.side-user:hover { background: var(--bg-hover); }
.avatar {
  width: 26px; height: 26px; border-radius: 50%;
  background: linear-gradient(135deg, #2d6a4f, #74c69d);
  display: grid; place-items: center;
  color: #fff; font-size: 12px; font-weight: 600; flex: 0 0 26px;
}

/* ── ΚΥΡΙΩΣ ─────────────────────────────────────────────────────── */
.main { flex: 1; display: flex; flex-direction: column; min-width: 0; position: relative; }

.topbar {
  height: 52px; flex: 0 0 52px;
  display: flex; align-items: center; gap: 6px;
  padding: 0 12px;
  background: var(--bg);
}
.model-pick {
  display: flex; align-items: center; gap: 5px;
  background: none; border: 0; color: var(--text);
  font-size: 17px; font-weight: 500; padding: 6px 10px; border-radius: 10px;
}
.model-pick:hover { background: var(--bg-hover); }
.model-pick .sub { color: var(--text-dim); font-weight: 400; }
.model-pick svg { width: 14px; height: 14px; color: var(--text-mid); }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 4px; }


/* ── ΡΟΗ ΜΗΝΥΜΑΤΩΝ ──────────────────────────────────────────────── */
.scroll { flex: 1; overflow-y: auto; scroll-behavior: smooth; }
.thread { max-width: 768px; margin: 0 auto; padding: 16px 20px 120px; }

.msg { margin-bottom: 26px; }
.msg.user { display: flex; justify-content: flex-end; }
.msg.user .bubble {
  background: var(--bg-user); border-radius: var(--radius);
  padding: 10px 18px; max-width: 72%;
  font-size: 16px; line-height: 1.6; white-space: pre-wrap; word-break: break-word;
}
.msg.bot .body {
  font-size: 16px; line-height: 1.75; white-space: pre-wrap; word-break: break-word;
}
.msg.bot .body.outburst { font-weight: 700; letter-spacing: .2px; }

.msg-actions { display: flex; gap: 2px; margin-top: 10px; opacity: 0; transition: opacity .15s; }
.msg.bot:hover .msg-actions { opacity: 1; }
.msg-actions .icon-btn { width: 30px; height: 30px; }
.msg-actions .icon-btn svg { width: 16px; height: 16px; }

/* ── ΤΟ ΘΕΑΤΡΟ: σκέφτεται ───────────────────────────────────────── */
.think { margin-bottom: 10px; }
.think-head {
  display: flex; align-items: center; gap: 7px;
  background: none; border: 0; padding: 2px 0;
  color: var(--text-mid); font-size: 14px;
}
.think-head:hover { color: var(--text); }
.think-head .chev { width: 13px; height: 13px; transition: transform .2s; }
.think-head.open .chev { transform: rotate(90deg); }
.think-body {
  margin-top: 8px; padding-left: 14px;
  border-left: 2px solid var(--border);
  color: var(--text-mid); font-size: 14.5px; line-height: 1.7;
}
.think-body p { margin: 0 0 7px; }
.think-body p:last-child { margin-bottom: 0; }

.shimmer {
  background: linear-gradient(90deg, var(--text-dim) 20%, var(--text) 45%, var(--text-dim) 70%);
  background-size: 200% auto;
  -webkit-background-clip: text; background-clip: text;
  color: transparent; animation: shimmer 1.6s linear infinite;
}
@keyframes shimmer { to { background-position: -200% center; } }

/* ── ΤΟ ΘΕΑΤΡΟ: ψάχνει στο διαδίκτυο ────────────────────────────── */
.search-box {
  border: 1px solid var(--border); border-radius: 14px;
  padding: 12px 14px; margin-bottom: 14px;
}
.search-head {
  display: flex; align-items: center; gap: 8px;
  color: var(--text-mid); font-size: 14px; margin-bottom: 2px;
}
.search-head svg { width: 15px; height: 15px; }
.search-q { font-size: 14px; color: var(--text); margin: 6px 0 10px; }
.search-q code {
  background: var(--bg-chip); padding: 2px 7px; border-radius: 6px;
  font-family: inherit; font-size: 13.5px;
}
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  display: flex; align-items: center; gap: 6px;
  background: var(--bg-chip); border-radius: 999px;
  padding: 5px 11px 5px 6px; font-size: 12.5px; color: var(--text-mid);
  max-width: 100%; opacity: 0; animation: chipin .3s forwards;
}
.chip .fav {
  width: 17px; height: 17px; border-radius: 50%; flex: 0 0 17px;
  display: grid; place-items: center; font-size: 9px; font-weight: 700; color: #fff;
}
.chip span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
@keyframes chipin { to { opacity: 1; } }

/* ── ΤΟ ΘΕΑΤΡΟ: τρεις τελείες ───────────────────────────────────── */
.dots { display: inline-flex; gap: 4px; align-items: center; height: 24px; }
.dots i {
  width: 7px; height: 7px; border-radius: 50%; background: var(--text-mid);
  animation: blink 1.4s infinite both;
}
.dots i:nth-child(2) { animation-delay: .2s; }
.dots i:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 80%, 100% { opacity: .25; } 40% { opacity: 1; } }

.caret {
  display: inline-block; width: 9px; height: 17px;
  background: var(--text); vertical-align: -3px; margin-left: 2px;
  animation: blink2 1s steps(2) infinite;
}
@keyframes blink2 { 50% { opacity: 0; } }

/* ── COMPOSER ───────────────────────────────────────────────────── */
.composer-wrap {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 0 20px calc(12px + env(safe-area-inset-bottom));
  background: linear-gradient(to top, var(--bg) 62%, transparent);
}
.composer {
  max-width: 768px; margin: 0 auto;
  background: var(--bg-composer);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 10px 10px 10px 16px;
  display: flex; align-items: flex-end; gap: 8px;
  box-shadow: var(--shadow);
}
.composer textarea {
  flex: 1; border: 0; outline: 0; resize: none;
  background: transparent; color: var(--text);
  font-family: inherit; font-size: 16px; line-height: 1.5;
  max-height: 180px; padding: 6px 0;
}
.composer textarea::placeholder { color: var(--text-dim); }
.send {
  width: 34px; height: 34px; border-radius: 50%; border: 0;
  background: var(--accent); color: var(--accent-fg);
  display: grid; place-items: center; flex: 0 0 34px;
}
.send:disabled { opacity: .25; cursor: default; }
.send svg { width: 19px; height: 19px; }
.disclaimer {
  text-align: center; font-size: 12px; color: var(--text-dim);
  padding: 9px 0 2px; max-width: 768px; margin: 0 auto;
}

/* ── ΑΡΧΙΚΗ ΟΘΟΝΗ ───────────────────────────────────────────────── */
.hero {
  text-align: center; padding: 20px;
  min-height: 58dvh;
  display: flex; flex-direction: column; justify-content: center;
}
.hero h1 { font-size: 30px; font-weight: 500; margin: 0 0 26px; letter-spacing: -.4px; }
.starters { display: flex; flex-wrap: wrap; gap: 9px; justify-content: center; max-width: 640px; margin: 0 auto; }
.starter {
  border: 1px solid var(--border-strong); background: none; color: var(--text-mid);
  border-radius: 999px; padding: 9px 15px; font-size: 14px;
}
.starter:hover { background: var(--bg-hover); color: var(--text); }

 ─────────────────────────────────────────────────────── */
.backdrop { display: none; }
/* ── ΠΡΟΣΒΑΣΙΜΟΤΗΤΑ ─────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .shimmer {
    animation: none; background: none;
    color: var(--text-mid); -webkit-text-fill-color: currentColor;
  }
  .dots i, .caret, .chip { animation: none; }
  .chip { opacity: 1; }
  .side { transition: none; }
  .scroll { scroll-behavior: auto; }
}

/* ── ΚΙΝΗΤΟ ─────────────────────────────────────────────────────── */
@media (max-width: 820px) {
  .side {
    position: fixed; z-index: 50; top: 0; bottom: 0; left: 0;
    box-shadow: 0 0 40px rgba(0,0,0,.3);
  }
  .backdrop { display: block; position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 40; }
  .backdrop.hidden { display: none; }
  .thread { padding: 12px 14px 130px; }
  .msg.user .bubble { max-width: 85%; font-size: 15.5px; }
  .msg.bot .body { font-size: 15.5px; }
  .composer-wrap { padding: 0 12px calc(8px + env(safe-area-inset-bottom)); }
  .hero { min-height: 52dvh; }
  .hero h1 { font-size: 24px; }

  /* σημεία αφής για τον αντίχειρα */
  .icon-btn { width: 44px; height: 44px; }
  .send { width: 40px; height: 40px; flex: 0 0 40px; }
  .side-item { padding: 12px 10px; }
  .new-chat { padding: 12px 10px; }
  .starter { padding: 12px 17px; }
  .model-pick { padding: 10px 10px; }
  .composer { padding: 8px 8px 8px 16px; }

  /* Χωρίς hover στο κινητό — αλλιώς είναι αόρατα αλλά πατιούνται */
  .msg-actions { opacity: 1; gap: 4px; }
  .msg-actions .icon-btn { width: 40px; height: 40px; }
  .think-head { padding: 9px 0; }
}