/* ===================== Asert AI Studio — Modern Dark Glass ===================== */
:root {
  --bg-0: #050816;
  --bg-1: #0a0e27;
  --bg-2: #11163a;
  --glass: rgba(255, 255, 255, 0.06);
  --glass-2: rgba(255, 255, 255, 0.10);
  --border: rgba(255, 255, 255, 0.12);
  --border-strong: rgba(124, 131, 255, 0.45);
  --text: #eef2ff;
  --muted: #9aa7d8;
  --accent: #7c83ff;
  --accent-2: #a855f7;
  --accent-3: #22d3ee;
  --success: #34d399;
  --danger: #f87171;
  --warning: #fbbf24;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --blur: 18px;
}

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

html, body { height: 100%; }

body {
  background: var(--bg-0);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  overflow: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Animated background ---------- */
.bg-orbs { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.55;
  animation: float 18s ease-in-out infinite;
}
.orb-1 { width: 520px; height: 520px; background: radial-gradient(circle, #7c83ff, transparent 70%); top: -120px; left: -120px; }
.orb-2 { width: 460px; height: 460px; background: radial-gradient(circle, #a855f7, transparent 70%); bottom: -100px; right: -100px; animation-delay: -6s; }
.orb-3 { width: 380px; height: 380px; background: radial-gradient(circle, #22d3ee, transparent 70%); top: 40%; left: 50%; animation-delay: -12s; opacity: 0.35; }
.orb-4 { width: 300px; height: 300px; background: radial-gradient(circle, #34d399, transparent 70%); bottom: 20%; left: 10%; animation-delay: -9s; opacity: 0.25; }

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, -30px) scale(1.08); }
  66% { transform: translate(-30px, 40px) scale(0.95); }
}

.bg-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

/* ---------- App shell ---------- */
.app-shell {
  position: relative; z-index: 1;
  display: flex; flex-direction: column;
  height: 100vh;
}

/* ---------- Topbar ---------- */
.topbar {
  background: rgba(5, 8, 22, 0.55);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border-bottom: 1px solid var(--border);
  padding: 0.6rem 1.25rem;
  flex-shrink: 0;
}
.topbar-inner {
  display: flex; align-items: center; gap: 1rem;
  max-width: 1600px; margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 0.75rem; text-decoration: none; color: var(--text); }
.brand-mark {
  width: 40px; height: 40px; border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; color: #fff;
  box-shadow: 0 8px 24px rgba(124, 131, 255, 0.4);
}
.brand-name { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.05rem; display: block; line-height: 1.1; }
.brand-sub { font-size: 0.7rem; color: var(--muted); letter-spacing: 0.5px; }

.topbar-nav {
  display: flex; gap: 0.35rem;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.3rem;
  margin-left: auto;
}
.tab-btn {
  background: transparent; border: none; color: var(--muted);
  padding: 0.5rem 1.1rem; border-radius: 999px;
  font-size: 0.88rem; font-weight: 500;
  display: flex; align-items: center; gap: 0.5rem;
  cursor: pointer; transition: all 0.25s ease;
}
.tab-btn:hover { color: var(--text); background: var(--glass-2); }
.tab-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 6px 20px rgba(124, 131, 255, 0.4);
}
.badge-count {
  background: rgba(255,255,255,0.2); color: #fff;
  font-size: 0.7rem; padding: 0.1rem 0.45rem; border-radius: 999px;
  min-width: 18px; text-align: center;
}
.tab-btn:not(.active) .badge-count { background: rgba(124,131,255,0.25); }

.topbar-actions { display: flex; align-items: center; gap: 0.5rem; }
.privacy-pill {
  font-size: 0.75rem; color: var(--success);
  background: rgba(52, 211, 153, 0.12);
  border: 1px solid rgba(52, 211, 153, 0.3);
  padding: 0.4rem 0.85rem; border-radius: 999px;
  display: flex; align-items: center; gap: 0.4rem;
}
.icon-btn {
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--glass); border: 1px solid var(--border);
  color: var(--text); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s ease;
}
.icon-btn:hover { background: var(--glass-2); border-color: var(--border-strong); transform: translateY(-1px); }
.icon-btn.danger:hover { background: rgba(248,113,113,0.15); border-color: var(--danger); color: var(--danger); }

/* ---------- Main ---------- */
.main { flex: 1; overflow: hidden; position: relative; }
.tab-panel { display: none; height: 100%; }
.tab-panel.active { display: block; animation: fadeIn 0.35s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ---------- Glass ---------- */
.glass {
  background: var(--glass);
  border: 1px solid var(--border);
  backdrop-filter: blur(var(--blur));
  -webkit-backdrop-filter: blur(var(--blur));
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

/* ---------- Chat layout ---------- */
.chat-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  height: 100%;
  gap: 1rem;
  padding: 1rem;
  max-width: 1600px; margin: 0 auto;
}
.chat-sidebar {
  display: flex; flex-direction: column; gap: 1rem;
  overflow-y: auto;
}
.sidebar-section {
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  backdrop-filter: blur(12px);
}
.sidebar-section h6 {
  font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1px;
  color: var(--muted); margin-bottom: 0.75rem;
}
.quick-prompt {
  width: 100%; text-align: left;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.6rem 0.85rem; border-radius: 10px;
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  display: flex; align-items: center; gap: 0.6rem;
  cursor: pointer; transition: all 0.2s ease;
}
.quick-prompt:hover {
  background: rgba(124,131,255,0.12);
  border-color: var(--border-strong);
  transform: translateX(3px);
}
.quick-prompt i { color: var(--accent); }
.tip { font-size: 0.8rem; color: var(--muted); margin-bottom: 0.5rem; line-height: 1.5; }

.chat-main { display: flex; flex-direction: column; min-height: 0; }
.chat-feed {
  flex: 1; overflow-y: auto;
  padding: 1.5rem;
  display: flex; flex-direction: column; gap: 1rem;
  scroll-behavior: smooth;
}
.chat-feed::-webkit-scrollbar { width: 6px; }
.chat-feed::-webkit-scrollbar-thumb { background: var(--glass-2); border-radius: 3px; }

/* Welcome message */
.welcome-card {
  text-align: center; padding: 2.5rem 1.5rem;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  max-width: 640px; margin: auto;
  backdrop-filter: blur(12px);
}
.welcome-card .welcome-icon {
  width: 72px; height: 72px; margin: 0 auto 1rem;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; color: #fff;
  box-shadow: 0 12px 32px rgba(124,131,255,0.4);
}
.welcome-card h3 { font-family: 'Space Grotesk', sans-serif; margin-bottom: 0.5rem; }
.welcome-card p { color: var(--muted); font-size: 0.95rem; line-height: 1.6; }

/* Chat cards */
.chat-card {
  max-width: 85%; padding: 1rem 1.25rem;
  border-radius: var(--radius);
  animation: slideUp 0.3s ease;
  position: relative;
}
@keyframes slideUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
.card-user {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  border-bottom-right-radius: 6px;
}
.card-ai {
  align-self: flex-start;
  background: var(--glass);
  border: 1px solid var(--border);
  backdrop-filter: blur(12px);
  border-bottom-left-radius: 6px;
}
.card-header-ai {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 0.6rem; font-size: 0.75rem;
}
.ai-title-tag { color: var(--accent-3); font-weight: 600; display: flex; align-items: center; gap: 0.4rem; }
.timestamp-tag { color: var(--muted); font-size: 0.7rem; }
.card-text { white-space: pre-wrap; word-break: break-word; line-height: 1.6; }
.card-body-content { line-height: 1.65; word-break: break-word; }
.card-body-content p { margin-bottom: 0.6rem; }
.card-body-content pre {
  background: rgba(0,0,0,0.4); border: 1px solid var(--border);
  border-radius: 10px; padding: 0.85rem; overflow-x: auto;
  margin: 0.6rem 0; font-size: 0.85rem;
}
.card-body-content code { font-family: 'Fira Code', monospace; }
.card-body-content :not(pre) > code {
  background: rgba(124,131,255,0.15); padding: 0.15rem 0.4rem; border-radius: 4px; font-size: 0.85em;
}
.card-body-content img, .card-body-content video {
  max-width: 100%; border-radius: 12px; margin: 0.6rem 0;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}
.card-body-content ul, .card-body-content ol { padding-left: 1.4rem; margin-bottom: 0.6rem; }

/* Inline generated media */
.inline-media { margin: 0.8rem 0; }
.inline-media img, .inline-media video { max-width: 100%; border-radius: 12px; }

/* Chat input */
.chat-input-wrap { padding: 0 1.5rem 1.25rem; }
.chat-input-bar {
  display: flex; align-items: flex-end; gap: 0.6rem;
  background: var(--glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0.6rem 0.75rem;
  backdrop-filter: blur(16px);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.chat-input-bar:focus-within {
  border-color: var(--border-strong);
  box-shadow: 0 0 0 4px rgba(124,131,255,0.15);
}
.input-icon-btn {
  width: 36px; height: 36px; border-radius: 10px;
  background: transparent; border: none; color: var(--muted);
  cursor: pointer; flex-shrink: 0; transition: color 0.2s;
}
.input-icon-btn:hover { color: var(--accent); }
#chatInputBox {
  flex: 1; background: transparent; border: none; outline: none;
  color: var(--text); font-size: 0.95rem; resize: none;
  max-height: 160px; min-height: 24px; line-height: 1.5;
  font-family: inherit;
}
#chatInputBox::placeholder { color: var(--muted); }
.send-btn {
  width: 38px; height: 38px; border-radius: 10px; border: none;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; cursor: pointer; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.send-btn:hover { transform: scale(1.05); box-shadow: 0 6px 16px rgba(124,131,255,0.4); }
.send-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.input-hint { font-size: 0.7rem; color: var(--muted); margin-top: 0.4rem; padding-left: 0.5rem; }

/* ---------- Studio layout ---------- */
.studio-layout {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 1.25rem; padding: 1.25rem;
  height: 100%; max-width: 1600px; margin: 0 auto;
}
.studio-form, .studio-preview { padding: 1.75rem; overflow-y: auto; }
.studio-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.5rem; }
.studio-icon {
  width: 52px; height: 52px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center; font-size: 1.4rem; color: #fff;
}
.img-icon { background: linear-gradient(135deg, #7c83ff, #a855f7); box-shadow: 0 8px 24px rgba(124,131,255,0.4); }
.vid-icon { background: linear-gradient(135deg, #f87171, #a855f7); box-shadow: 0 8px 24px rgba(248,113,113,0.4); }
.studio-header h2 { font-family: 'Space Grotesk', sans-serif; font-size: 1.4rem; margin-bottom: 0.2rem; }
.studio-header p { color: var(--muted); font-size: 0.88rem; margin: 0; }

.form-label { font-size: 0.85rem; color: var(--muted); margin-bottom: 0.4rem; font-weight: 500; }
.form-control, .form-select {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 0.7rem 0.9rem;
  font-size: 0.9rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-control:focus, .form-select:focus {
  background: rgba(255,255,255,0.08);
  border-color: var(--border-strong);
  box-shadow: 0 0 0 3px rgba(124,131,255,0.15);
  color: var(--text);
}
.form-control::placeholder { color: var(--muted); }
.form-select option { background: var(--bg-1); color: var(--text); }
.form-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; margin-top: 0.75rem; }
.form-col { display: flex; flex-direction: column; }

.ratio-group { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.ratio-btn {
  flex: 1; min-width: 90px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.6rem 0.5rem; border-radius: 10px;
  font-size: 0.8rem; cursor: pointer; transition: all 0.2s;
}
.ratio-btn:hover { border-color: var(--border-strong); }
.ratio-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent; color: #fff;
  box-shadow: 0 4px 14px rgba(124,131,255,0.35);
}

.primary-btn {
  width: 100%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none; color: #fff;
  padding: 0.85rem 1.25rem; border-radius: 12px;
  font-size: 0.95rem; font-weight: 600;
  display: flex; align-items: center; justify-content: center; gap: 0.6rem;
  cursor: pointer; transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 8px 24px rgba(124,131,255,0.35);
}
.primary-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(124,131,255,0.5); }
.primary-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.ghost-btn {
  background: var(--glass); border: 1px solid var(--border);
  color: var(--text); padding: 0.55rem 1rem; border-radius: 10px;
  font-size: 0.85rem; cursor: pointer; transition: all 0.2s;
  display: inline-flex; align-items: center; gap: 0.5rem;
  text-decoration: none;
}
.ghost-btn:hover { background: var(--glass-2); border-color: var(--border-strong); }
.ghost-btn.danger:hover { background: rgba(248,113,113,0.12); border-color: var(--danger); color: var(--danger); }

/* Preview */
.studio-preview { display: flex; flex-direction: column; align-items: center; justify-content: center; position: relative; }
.preview-empty, .preview-loader {
  text-align: center; padding: 2rem;
}
.empty-icon { font-size: 3.5rem; color: var(--muted); margin-bottom: 1rem; opacity: 0.6; }
.preview-empty h4 { font-family: 'Space Grotesk', sans-serif; margin-bottom: 0.5rem; }
.preview-empty p { color: var(--muted); font-size: 0.88rem; }
.preview-loader p { margin-top: 1rem; color: var(--text); }
.preview-loader small { color: var(--muted); }
.spinner {
  width: 56px; height: 56px; margin: 0 auto;
  border: 3px solid var(--glass-2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.preview-media { max-width: 100%; max-height: 70vh; border-radius: var(--radius); box-shadow: var(--shadow); }
.preview-actions { display: flex; gap: 0.6rem; margin-top: 1rem; flex-wrap: wrap; justify-content: center; }

/* ---------- Gallery ---------- */
.gallery-wrap { padding: 1.5rem; height: 100%; overflow-y: auto; max-width: 1600px; margin: 0 auto; }
.gallery-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; flex-wrap: wrap; gap: 1rem; }
.gallery-header h2 { font-family: 'Space Grotesk', sans-serif; font-size: 1.5rem; }
.gallery-header p { color: var(--muted); font-size: 0.88rem; margin-top: 0.3rem; }
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}
.gallery-card {
  background: var(--glass); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  cursor: pointer; transition: transform 0.25s ease, box-shadow 0.25s ease;
  position: relative;
}
.gallery-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(0,0,0,0.5); border-color: var(--border-strong); }
.gallery-card img, .gallery-card video { width: 100%; height: 190px; object-fit: cover; display: block; }
.gallery-badge {
  position: absolute; top: 0.6rem; left: 0.6rem;
  background: rgba(5,8,22,0.75); backdrop-filter: blur(8px);
  color: #fff; font-size: 0.7rem; padding: 0.25rem 0.6rem; border-radius: 999px;
  border: 1px solid var(--border);
}
.gallery-card-body { padding: 0.85rem; }
.gallery-card-prompt { font-size: 0.82rem; color: var(--text); margin-bottom: 0.4rem;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.gallery-card-meta { font-size: 0.7rem; color: var(--muted); }
.gallery-empty { text-align: center; padding: 4rem 2rem; color: var(--muted); }
.gallery-empty .empty-icon { font-size: 4rem; margin-bottom: 1rem; opacity: 0.5; }

/* ---------- Settings modal ---------- */
.glass-modal {
  background: rgba(10, 14, 39, 0.85);
  backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  color: var(--text);
}
.modal-header { border-bottom: 1px solid var(--border); }
.modal-footer { border-top: 1px solid var(--border); }
.settings-intro { font-size: 0.85rem; color: var(--muted); margin-bottom: 1rem; line-height: 1.5; }
.settings-group { margin-bottom: 1rem; }
.settings-group label { font-size: 0.82rem; color: var(--muted); margin-bottom: 0.35rem; display: block; }
.settings-group label a { color: var(--accent-3); text-decoration: none; }
.settings-group label a:hover { text-decoration: underline; }
.modal-title { font-family: 'Space Grotesk', sans-serif; }
.btn-close-white { filter: invert(1) grayscale(100%) brightness(200%); }

/* ---------- Toast ---------- */
.toast-container { position: fixed; bottom: 1.25rem; right: 1.25rem; z-index: 9999; display: flex; flex-direction: column; gap: 0.5rem; }
.toast-msg {
  background: var(--glass); border: 1px solid var(--border);
  backdrop-filter: blur(16px);
  color: var(--text); padding: 0.75rem 1.1rem; border-radius: 12px;
  font-size: 0.88rem; box-shadow: var(--shadow);
  animation: slideInRight 0.3s ease;
  display: flex; align-items: center; gap: 0.6rem;
  max-width: 360px;
}
.toast-msg.success { border-color: var(--success); }
.toast-msg.error { border-color: var(--danger); }
.toast-msg i { font-size: 1rem; }
@keyframes slideInRight { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .chat-layout { grid-template-columns: 1fr; }
  .chat-sidebar { display: none; }
  .studio-layout { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .topbar-nav span { display: none; }
  .topbar-nav { padding: 0.25rem; }
  .tab-btn { padding: 0.5rem 0.7rem; }
  .privacy-pill { display: none; }
}
@media (max-width: 600px) {
  .topbar-inner { gap: 0.5rem; }
  .brand-sub { display: none; }
  .chat-card { max-width: 95%; }
}

/* ---------- Misc ---------- */
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.25rem; }
.text-indigo { color: var(--accent); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.fade-in { animation: fadeIn 0.3s ease; }