:root {
  --bg: #0e0f13;
  --bg-elev: #16181f;
  --bg-elev-2: #1d2029;
  --line: #2a2e3a;
  --text: #e8e6e1;
  --muted: #9a9aa5;
  --accent: #c9a06a;
  --accent-soft: rgba(201, 160, 106, 0.14);
  --danger: #e2686b;
  --radius: 14px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --font: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --serif: "Cormorant Garamond", Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: radial-gradient(1200px 600px at 80% -10%, #1a1c24 0%, var(--bg) 55%);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- Top nav ---- */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(14, 15, 19, 0.82);
  backdrop-filter: blur(12px);
  z-index: 20;
}
.brand {
  font-family: var(--serif);
  font-size: 1.5rem;
  letter-spacing: 0.5px;
  font-weight: 600;
}
.brand span { color: var(--accent); }
.nav-links { display: flex; gap: 22px; align-items: center; }
.nav-links a {
  color: var(--muted);
  font-size: 0.92rem;
  letter-spacing: 0.3px;
  text-decoration: none;
}
.nav-links a.active, .nav-links a:hover { color: var(--text); }
.btn-link {
  background: none; border: none; color: var(--muted);
  font: inherit; cursor: pointer; padding: 0;
}
.btn-link:hover { color: var(--danger); }

/* ---- Layout ---- */
.wrap { max-width: 1100px; margin: 0 auto; padding: 40px 28px 80px; }
.hero { padding: 70px 28px 40px; max-width: 900px; margin: 0 auto; }
.hero .eyebrow {
  text-transform: uppercase; letter-spacing: 3px; font-size: 0.72rem;
  color: var(--accent); margin-bottom: 18px;
}
.hero h1 {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(2.6rem, 6vw, 4.6rem); line-height: 1.05; margin: 0 0 18px;
}
.hero p { color: var(--muted); font-size: 1.12rem; max-width: 620px; }

.card {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ---- Buttons / inputs ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--accent); color: #1a1408; border: none;
  padding: 12px 22px; border-radius: 999px; font-weight: 600;
  font-size: 0.95rem; cursor: pointer; transition: transform .12s ease, filter .12s ease;
}
.btn:hover { filter: brightness(1.06); transform: translateY(-1px); }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
input, textarea {
  width: 100%; background: var(--bg-elev-2); border: 1px solid var(--line);
  color: var(--text); border-radius: 10px; padding: 13px 15px; font: inherit;
  outline: none; transition: border-color .15s ease;
}
input:focus, textarea:focus { border-color: var(--accent); }

/* ---- Login ---- */
.login-screen {
  min-height: 100vh; display: grid; place-items: center; padding: 24px;
}
.login-card { width: 100%; max-width: 400px; padding: 40px 34px; text-align: center; }
.login-card .lock { font-size: 2.2rem; margin-bottom: 8px; }
.login-card h1 { font-family: var(--serif); font-size: 2rem; margin: 6px 0 4px; }
.login-card p { color: var(--muted); margin: 0 0 26px; font-size: .95rem; }
.login-card form { display: flex; flex-direction: column; gap: 14px; }
.error-msg { color: var(--danger); font-size: .88rem; min-height: 1.1em; }

/* ---- Gallery ---- */
.section-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 26px; flex-wrap: wrap; gap: 10px; }
.section-head h2 { font-family: var(--serif); font-size: 2.2rem; margin: 0; }
.section-head .count { color: var(--muted); font-size: .9rem; }
.grid {
  columns: 4 240px; column-gap: 16px;
}
.grid figure {
  margin: 0 0 16px; break-inside: avoid; border-radius: 12px; overflow: hidden;
  border: 1px solid var(--line); background: var(--bg-elev); position: relative;
  cursor: zoom-in;
}
.grid img { width: 100%; display: block; transition: transform .5s ease, opacity .4s ease; }
.grid figure:hover img { transform: scale(1.04); }
.grid .tag {
  position: absolute; top: 8px; left: 8px; font-size: .66rem; letter-spacing: .5px;
  text-transform: uppercase; background: rgba(0,0,0,.55); color: #ddd;
  padding: 3px 8px; border-radius: 999px; backdrop-filter: blur(4px);
}
.state {
  text-align: center; color: var(--muted); padding: 70px 20px;
}

/* ---- Video shelf ---- */
#videos-section { margin-top: 48px; }
.video-grid { columns: 2 320px; }
.video-grid figure { cursor: default; }
.video-grid video { width: 100%; display: block; background: #000; }
.video-grid figcaption { padding: 8px 12px; font-size: .85rem; color: var(--muted); }
.state .big { font-size: 2.4rem; margin-bottom: 10px; }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; background: rgba(6,7,10,.92); display: none;
  place-items: center; z-index: 50; padding: 30px; overflow-y: auto;
}
.lightbox.open { display: grid; }
.lb-card {
  background: var(--bg-elev, #15161b); border: 1px solid var(--line, #2a2c33);
  border-radius: 12px; max-width: 680px; width: 100%; position: relative;
  max-height: 92vh; overflow-y: auto;
}
.lb-card img { width: 100%; max-height: 55vh; object-fit: contain; display: block; background: #000; border-radius: 12px 12px 0 0; }
.lb-actions { display: flex; gap: 10px; padding: 10px 16px; border-bottom: 1px solid var(--line, #2a2c33); }
.lb-btn {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .82rem; font-weight: 600; padding: 6px 14px;
  border-radius: 8px; border: 1px solid var(--line, #2a2c33);
  color: var(--text, #e8e6e1); background: rgba(255,255,255,.05);
  text-decoration: none; cursor: pointer; transition: background .15s;
}
.lb-btn:hover { background: rgba(255,255,255,.12); }
.lb-btn-dl { border-color: var(--accent, #c9a86a); color: var(--accent, #c9a86a); }
.lb-btn-dl:hover { background: rgba(201,168,106,.12); }
.lb-btn-similar { border-color: #6a8ec9; color: #6a8ec9; }
.lb-btn-similar:hover { background: rgba(106,142,201,.12); }
.lb-close {
  position: absolute; top: 10px; right: 10px; z-index: 2; background: rgba(0,0,0,.6);
  border: none; color: #fff; border-radius: 999px; width: 32px; height: 32px; cursor: pointer;
}
.lb-info { padding: 18px 20px 22px; }
.lb-caption { font-family: var(--serif); font-size: 1.15rem; margin: 0 0 8px; }
.lb-analysis { color: var(--muted); font-size: .9rem; margin: 0 0 12px; }
.lb-muted { color: var(--muted); font-size: .82rem; }
.lb-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.lb-tag {
  font-size: .75rem; color: var(--accent, #c9a86a); border: 1px solid var(--line);
  border-radius: 999px; padding: 2px 10px; cursor: pointer;
}
.lb-comments h4 { margin: 14px 0 8px; font-size: .95rem; }
.lb-comment { border-top: 1px solid var(--line); padding: 8px 0; font-size: .9rem; }
.lb-comment p { margin: 4px 0 0; white-space: pre-wrap; }
#lb-comment-form { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
#lb-comment-form input, #lb-comment-form textarea {
  background: rgba(255,255,255,.05); border: 1px solid var(--line); color: inherit;
  border-radius: 8px; padding: 8px 10px; font: inherit;
}
#lb-comment-form button {
  align-self: flex-start; background: var(--accent, #c9a86a); color: #14110b;
  border: none; border-radius: 8px; padding: 8px 18px; font-weight: 600; cursor: pointer;
}

/* Tag filter bar */
.tag-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.tag-chip {
  background: transparent; border: 1px solid var(--line); color: var(--muted);
  border-radius: 999px; padding: 5px 12px; font-size: .8rem; cursor: pointer;
}
.tag-chip.active { border-color: var(--accent, #c9a86a); color: var(--accent, #c9a86a); }
.tag-chip.clear { color: var(--danger, #e57373); }
.grid .tag.hash { top: auto; bottom: 8px; text-transform: none; }

/* ---- Chat ---- */
.chat-shell { display: flex; flex-direction: column; height: calc(100vh - 66px); }
.chat-log {
  flex: 1; overflow-y: auto; padding: 30px 0; display: flex; flex-direction: column; gap: 16px;
  max-width: 820px; margin: 0 auto; width: 100%;
}
.msg { display: flex; gap: 12px; max-width: 88%; }
.msg .bubble {
  padding: 12px 16px; border-radius: 14px; white-space: pre-wrap; word-wrap: break-word;
}
.msg.user { align-self: flex-end; flex-direction: row-reverse; }
.msg.user .bubble { background: var(--accent); color: #1a1408; border-bottom-right-radius: 4px; }
.msg.ai .bubble { background: var(--bg-elev-2); border: 1px solid var(--line); border-bottom-left-radius: 4px; }
.msg .who { font-size: .68rem; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin-bottom: 4px; }
.msg.bella-locked-msg .bubble {
  background: rgba(255, 100, 130, 0.08);
  border: 1px dashed rgba(255, 100, 130, 0.5);
  color: var(--muted);
  font-style: italic;
}
.chat-input {
  border-top: 1px solid var(--line); padding: 16px 0 24px; max-width: 820px; margin: 0 auto; width: 100%;
  display: flex; gap: 10px; align-items: flex-end;
}
.chat-input textarea { resize: none; max-height: 160px; }
.typing { color: var(--muted); font-style: italic; font-size: .9rem; padding-left: 4px; }

.footer { color: var(--muted); font-size: .82rem; text-align: center; padding: 30px; border-top: 1px solid var(--line); margin-top: 40px; }

@media (max-width: 640px) {
  .hero { padding: 46px 22px 24px; }
  .grid { columns: 2 140px; }
}