/* ── RESET & VARS ──────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0f1011;
  --bg2:         #1a1b1c;
  --bg3:         #242526;
  --bg4:         #2e2f30;
  --border:      rgba(255,255,255,0.07);
  --border2:     rgba(255,255,255,0.12);
  --accent-blue: #4285f4;
  --accent-pur:  #8b5cf6;
  --accent-cyan: #06b6d4;
  --real:        #34a853;
  --fake:        #ea4335;
  --warn:        #fbbc04;
  --text:        #e3e3e3;
  --text-2:      #9aa0a6;
  --text-3:      #5f6368;
  --radius:      16px;
  --radius-sm:   10px;
  --sidebar-w:   260px;
  --trans:       0.2s ease;
  --font-ui:     'Google Sans', 'Segoe UI', sans-serif;
  --font-text:   'Google Sans Text', 'Google Sans', sans-serif;
  --font-mono:   'JetBrains Mono', monospace;
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-text);
  display: flex;
  font-size: 14px;
  line-height: 1.6;
}

/* ══════════════════════════════════════════════
   SIDEBAR
══════════════════════════════════════════════ */
.sidebar {
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 16px 12px;
  flex-shrink: 0;
  z-index: 10;
}

.sidebar-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 4px 20px;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: default;
}

.logo-gem { display: flex; align-items: center; }

.logo-text {
  font-family: var(--font-ui);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
}

.new-session-btn {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--trans), color var(--trans);
}
.new-session-btn:hover { background: var(--bg3); color: var(--text); }

.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 50px;
  border: none;
  background: transparent;
  color: var(--text-2);
  font-family: var(--font-ui);
  font-size: 0.88rem;
  font-weight: 400;
  cursor: pointer;
  transition: all var(--trans);
  text-align: left;
  width: 100%;
}
.nav-item:hover { background: var(--bg3); color: var(--text); }
.nav-item.active {
  background: rgba(66,133,244,0.16);
  color: var(--accent-blue);
  font-weight: 500;
}
.nav-item svg { flex-shrink: 0; }

.back-home-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 9px 14px;
  border-radius: 50px;
  border: 1px solid rgba(255,255,255,0.08);
  background: transparent;
  color: var(--text-2);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--trans);
  margin-top: 6px;
}
.back-home-btn:hover {
  background: rgba(66,133,244,0.08);
  border-color: rgba(66,133,244,0.25);
  color: var(--accent-blue);
}

.sidebar-footer {
  padding: 12px 4px 4px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 8px;
}

.status-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 50px;
  background: var(--bg2);
  font-size: 0.72rem;
  color: var(--text-2);
}
.status-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.dot-off  { background: var(--bg4); }
.dot-on   { background: var(--real); box-shadow: 0 0 5px var(--real); animation: pulse 2s infinite; }
.dot-warn { background: var(--warn); }
@keyframes pulse { 0%,100%{opacity:1}50%{opacity:0.5} }

/* ══════════════════════════════════════════════
   MOBILE TOP BAR
   Lives INSIDE .main flex column — not fixed.
   Pushes content down naturally.
══════════════════════════════════════════════ */
.mobile-topbar {
  display: none;
  flex-shrink: 0;
  height: 52px;
  width: 100%;
  background: var(--bg2);
  border-bottom: 1px solid var(--border2);
  align-items: center;
  padding: 0 12px;
  gap: 10px;
  z-index: 20;
}

.mobile-ham {
  width: 36px; height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border2);
  background: var(--bg3);
  color: var(--text-2);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: background var(--trans), color var(--trans);
}
.mobile-ham:hover { background: var(--bg4); color: var(--text); }

.mobile-brand {
  flex: 1;
  display: flex; align-items: center; gap: 8px;
}
.mobile-brand-name {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
}

.mobile-home-link {
  display: flex; align-items: center; gap: 5px;
  padding: 6px 12px;
  border-radius: 50px;
  border: 1px solid var(--border2);
  background: transparent;
  color: var(--text-2);
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 500;
  text-decoration: none;
  flex-shrink: 0;
  white-space: nowrap;
  transition: all var(--trans);
}
.mobile-home-link:hover { background: var(--bg3); color: var(--text); }

/* Sidebar overlay (mobile) */
.sidebar-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(3px);
  z-index: 400;
}
.sidebar-overlay.visible { display: block; }

/* ══════════════════════════════════════════════
   MAIN LAYOUT
   KEY: flex-direction column so topbar + view
   stack vertically. View fills remaining space.
══════════════════════════════════════════════ */
.main {
  flex: 1;
  min-width: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ── VIEW BASE ────────────────────────────────── */
.view {
  display: none !important;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}
.view.active { display: flex !important; }

/* ══════════════════════════════════════════════
   CHAT VIEW — critical flex structure
   messages: scrollable, fills space
   input-dock: fixed height, never shrinks
══════════════════════════════════════════════ */
#view-chat {
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.messages {
  flex: 1 1 0;
  min-height: 0;          /* allow shrinking */
  overflow-y: auto;
  padding: 24px 0 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}
.messages::-webkit-scrollbar { width: 4px; }
.messages::-webkit-scrollbar-track { background: transparent; }
.messages::-webkit-scrollbar-thumb { background: var(--bg4); border-radius: 2px; }

/* Input dock: NEVER shrinks, always visible */
.input-dock {
  flex-shrink: 0;
  padding: 8px 72px 20px;
  background: var(--bg);
  position: relative;
  z-index: 10;
}

/* ══════════════════════════════════════════════
   MESSAGES
══════════════════════════════════════════════ */
.msg {
  display: flex;
  gap: 0;
  padding: 2px 0;
  animation: fadeUp 0.25s ease both;
  max-width: 100%;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.msg.bot {
  flex-direction: column;
  padding: 12px 80px 12px 72px;
}
.msg.bot .msg-sender {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.gem-avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: linear-gradient(135deg, #4285f4, #8b5cf6, #06b6d4);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.gem-avatar svg { display: block; }
.sender-name {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text);
}
.sender-time {
  font-size: 0.7rem;
  color: var(--text-3);
}
.msg.bot .msg-content {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--text);
}

.msg.user {
  justify-content: flex-end;
  padding: 8px 24px 8px 80px;
}
.msg.user .msg-bubble {
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: 18px 4px 18px 18px;
  padding: 10px 16px;
  font-size: 0.88rem;
  color: var(--text);
  max-width: 480px;
  word-break: break-word;
}

/* ── TYPING ───────────────────────────────────── */
.typing-dots { display: flex; gap: 5px; padding: 4px 0; }
.typing-dots span {
  width: 7px; height: 7px;
  background: var(--accent-blue);
  border-radius: 50%;
  animation: tdot 1.3s infinite;
  opacity: 0.4;
}
.typing-dots span:nth-child(2) { animation-delay: 0.15s; }
.typing-dots span:nth-child(3) { animation-delay: 0.3s; }
@keyframes tdot { 0%,100%{opacity:0.2;transform:scale(0.8)} 40%{opacity:1;transform:scale(1)} }

/* ══════════════════════════════════════════════
   INPUT DOCK INTERNALS
══════════════════════════════════════════════ */
.gemini-input-card {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: 26px;
  overflow: visible;
  transition: border-color var(--trans), box-shadow var(--trans);
  position: relative;
}
.gemini-input-card:focus-within {
  border-color: rgba(66,133,244,0.45);
  box-shadow: 0 0 0 3px rgba(66,133,244,0.08);
}
.gemini-input-card.drag-active {
  border-color: var(--accent-blue);
  background: rgba(66,133,244,0.04);
}

.gemini-preview-strip { padding: 10px 14px 0; }
.gemini-file-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: 10px;
  padding: 6px 10px 6px 8px;
  max-width: 280px;
}
#gemini-preview-img {
  width: 36px; height: 36px;
  object-fit: cover;
  border-radius: 6px;
  flex-shrink: 0;
  border: 1px solid var(--border);
}
.gemini-file-icon {
  width: 36px; height: 36px;
  border-radius: 6px;
  background: var(--bg4);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-2);
  flex-shrink: 0;
}
.gemini-file-name {
  font-size: 0.75rem;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 140px;
}
.gemini-remove-chip {
  background: none; border: none; cursor: pointer;
  color: var(--text-3);
  display: flex; align-items: center; justify-content: center;
  padding: 2px; border-radius: 4px;
  transition: color var(--trans); flex-shrink: 0;
}
.gemini-remove-chip:hover { color: var(--fake); }

.gemini-input-row {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 4px;
  padding: 10px 12px;
  min-height: 56px;
}

.gemini-icon-btn {
  width: 36px; height: 36px;
  border-radius: 50%; border: none;
  background: transparent; color: var(--text-2);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--trans), color var(--trans);
  flex-shrink: 0;
}
.gemini-icon-btn:hover { background: var(--bg3); color: var(--text); }
.gemini-icon-btn.active { color: var(--accent-blue); background: rgba(66,133,244,0.12); }

.gemini-mode-pills { display: flex; gap: 4px; flex-shrink: 0; }
.gemini-mode-pill {
  display: flex; align-items: center; gap: 5px;
  padding: 5px 12px;
  border-radius: 50px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-3);
  font-family: var(--font-ui);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--trans);
  white-space: nowrap;
}
.gemini-mode-pill.active {
  background: rgba(66,133,244,0.15);
  border-color: rgba(66,133,244,0.35);
  color: var(--accent-blue);
}
.gemini-mode-pill:hover:not(.active) {
  background: var(--bg3);
  color: var(--text);
  border-color: var(--border2);
}

.gemini-placeholder {
  flex: 1 1 0;
  min-width: 0;
  font-size: 0.9rem;
  color: var(--text-3);
  padding: 0 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
  user-select: none;
}
.gemini-placeholder:hover { color: var(--text-2); }

.gemini-right-actions {
  display: flex; align-items: center; gap: 4px;
  flex-shrink: 0;
  margin-left: auto;
}

.gemini-send-btn {
  width: 36px; height: 36px; min-width: 36px;
  border-radius: 50%; border: none;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-pur));
  color: #fff; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: opacity var(--trans), transform var(--trans);
  flex-shrink: 0;
}
.gemini-send-btn:hover:not(:disabled) { opacity: 0.88; transform: scale(1.05); }
.gemini-send-btn:active:not(:disabled) { transform: scale(0.95); }
.gemini-send-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.gemini-advanced-panel {
  display: none;
  padding: 0 14px 14px;
  gap: 10px;
  border-top: 1px solid var(--border);
  animation: slideDown 0.2s ease;
}
.gemini-advanced-panel.open { display: flex; }
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.adv-field {
  flex: 1; display: flex; flex-direction: column;
  gap: 4px; padding-top: 12px;
}
.adv-field label { font-size: 0.68rem; color: var(--text-3); letter-spacing: 0.02em; }
.adv-field input {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text);
  font-family: var(--font-mono); font-size: 0.72rem;
  padding: 7px 10px; outline: none;
  transition: border-color var(--trans);
}
.adv-field input:focus { border-color: var(--accent-blue); }
.adv-field input::placeholder { color: var(--text-3); }

/* Attach menu — desktop floats above input */
.attach-menu {
  position: absolute;
  bottom: calc(100% + 6px); left: 0;
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: 14px; padding: 6px;
  display: flex; flex-direction: column; gap: 2px;
  z-index: 100;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  animation: fadeUp 0.15s ease;
}
.attach-option {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 14px;
  border: none; background: transparent;
  color: var(--text); font-family: var(--font-ui); font-size: 0.83rem;
  cursor: pointer; border-radius: 10px;
  transition: background var(--trans); white-space: nowrap;
}
.attach-option:hover { background: var(--bg3); }
.attach-option svg { color: var(--text-2); }

/* ══════════════════════════════════════════════
   RESULT COMPONENTS
══════════════════════════════════════════════ */
.verdict-banner {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  margin: 8px 0 12px;
}
.verdict-banner.fake { background: rgba(234,67,53,0.1); border: 1px solid rgba(234,67,53,0.25); }
.verdict-banner.real { background: rgba(52,168,83,0.1);  border: 1px solid rgba(52,168,83,0.25); }
.verdict-icon {
  width: 36px; height: 36px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; flex-shrink: 0;
}
.verdict-banner.fake .verdict-icon { background: rgba(234,67,53,0.15); }
.verdict-banner.real .verdict-icon { background: rgba(52,168,83,0.15); }
.verdict-label { font-family: var(--font-ui); font-size: 1rem; font-weight: 600; }
.verdict-banner.fake .verdict-label { color: var(--fake); }
.verdict-banner.real .verdict-label { color: var(--real); }
.verdict-sub { font-size: 0.78rem; color: var(--text-2); margin-top: 2px; }

/* ── CHIP GRID ────────────────────────────────── */
.chip-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 8px 0 12px;
}
.chip {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  min-width: 0;
}
.chip-label {
  font-size: 0.62rem; color: var(--text-3);
  letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 3px;
}
.chip-value {
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.chip-value.is-fake    { color: var(--fake); }
.chip-value.is-real    { color: var(--real); }
.chip-value.is-neutral { color: var(--text); }

/* ── PROB BAR ─────────────────────────────────── */
.prob-section { margin: 8px 0 14px; }
.prob-header {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.75rem; color: var(--text-2); margin-bottom: 6px;
}
.prob-track { height: 6px; background: var(--bg3); border-radius: 3px; overflow: hidden; }
.prob-fill {
  height: 100%; border-radius: 3px;
  transition: width 1s cubic-bezier(0.16,1,0.3,1);
}
.prob-fill.is-fake { background: linear-gradient(90deg, var(--warn), var(--fake)); }
.prob-fill.is-real { background: var(--real); }

/* ── ANALYSIS IMAGE ───────────────────────────── */
.analysis-img {
  max-width: 300px; border-radius: 10px;
  border: 1px solid var(--border); margin: 8px 0; display: block;
}

/* ── SIGNAL TABLE ─────────────────────────────── */
.signal-wrap {
  display: flex; gap: 20px; align-items: flex-start;
  flex-wrap: wrap; margin: 10px 0 14px;
}
.signal-table {
  flex: 1; min-width: 240px;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); overflow: hidden;
}
.signal-table table { width: 100%; border-collapse: collapse; font-size: 0.78rem; }
.signal-table th {
  text-align: left; color: var(--text-3); font-weight: 500;
  padding: 8px 12px; border-bottom: 1px solid var(--border);
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em;
}
.signal-table td { padding: 8px 12px; border-bottom: 1px solid rgba(255,255,255,0.04); }
.signal-table tr:last-child td { border-bottom: none; }
.td-fake { color: var(--fake); font-weight: 600; }
.td-real { color: var(--real); font-weight: 600; }

/* ── FRAME GRID ───────────────────────────────── */
.frames-header {
  font-size: 0.75rem; font-weight: 500; color: var(--text-2);
  text-transform: uppercase; letter-spacing: 0.05em; margin: 14px 0 8px;
}
.frame-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-bottom: 12px;
}
.frame-card {
  border-radius: 10px; overflow: hidden;
  border: 1.5px solid transparent; background: var(--bg3);
  transition: transform 0.15s ease;
}
.frame-card:hover { transform: scale(1.03); }
.frame-card.fc-fake { border-color: rgba(234,67,53,0.45); }
.frame-card.fc-real { border-color: rgba(52,168,83,0.3); }
.frame-thumb { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; background: var(--bg); }
.frame-info { padding: 6px 8px; }
.frame-badge {
  font-size: 0.58rem; font-weight: 700;
  padding: 2px 7px; border-radius: 4px; display: inline-block; margin-bottom: 3px;
}
.frame-badge.fake { background: rgba(234,67,53,0.15); color: var(--fake); }
.frame-badge.real { background: rgba(52,168,83,0.12); color: var(--real); }
.frame-stat { font-size: 0.6rem; color: var(--text-3); }
.frame-bar { height: 3px; background: var(--bg); margin-top: 5px; border-radius: 2px; overflow: hidden; }
.frame-bar-fill { height: 100%; }
.frame-bar-fill.fake { background: var(--fake); }
.frame-bar-fill.real { background: var(--real); }

/* ── TIMELINE ─────────────────────────────────── */
.timeline-wrap {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px; margin-bottom: 12px;
}
.timeline-title {
  font-size: 0.72rem; color: var(--text-3);
  text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 10px;
}
canvas.timeline-chart { width: 100% !important; height: 110px !important; }

/* ── FRAME TABLE ──────────────────────────────── */
.frame-table-details summary {
  cursor: pointer; font-size: 0.75rem; color: var(--text-2);
  padding: 8px 2px; user-select: none; list-style: none;
  display: flex; align-items: center; gap: 6px;
}
.frame-table-details summary::marker { display: none; }
.frame-table-details summary svg { transition: transform 0.2s; }
.frame-table-details[open] summary svg { transform: rotate(90deg); }
.detail-table { width: 100%; border-collapse: collapse; font-size: 0.74rem; margin-top: 8px; }
.detail-table th {
  text-align: left; color: var(--text-3);
  padding: 6px 10px; border-bottom: 1px solid var(--border);
  font-weight: 500; font-size: 0.68rem;
  text-transform: uppercase; letter-spacing: 0.04em;
}
.detail-table td { padding: 7px 10px; border-bottom: 1px solid rgba(255,255,255,0.04); }
.detail-table tr:hover td { background: rgba(255,255,255,0.02); }

/* ── EXPLANATION BLOCK ────────────────────────── */
.explanation-block {
  background: rgba(66,133,244,0.05);
  border: 1px solid rgba(66,133,244,0.18);
  border-left: 3px solid var(--accent-blue);
  border-radius: 8px;
  padding: 14px 16px; margin: 10px 0;
  font-size: 0.85rem; line-height: 1.8; color: var(--text);
}
.exp-header {
  font-size: 0.68rem; color: var(--accent-blue);
  text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 8px; font-weight: 500;
}

/* ── DEMO BANNER ──────────────────────────────── */
.demo-banner {
  background: rgba(251,188,4,0.07);
  border: 1px solid rgba(251,188,4,0.25);
  border-radius: 10px; padding: 12px 16px; font-size: 0.82rem; margin: 8px 0;
}
.demo-banner-title { color: var(--warn); font-weight: 600; margin-bottom: 4px; }

/* ── PDF BTN ──────────────────────────────────── */
.download-pdf-btn {
  display: inline-flex; align-items: center; gap: 7px;
  margin-top: 14px; padding: 9px 18px;
  background: var(--bg3); border: 1px solid var(--border2);
  border-radius: 50px; color: var(--text);
  font-family: var(--font-ui); font-size: 0.8rem; font-weight: 500;
  cursor: pointer; transition: all var(--trans);
}
.download-pdf-btn:hover {
  background: rgba(66,133,244,0.12);
  border-color: rgba(66,133,244,0.4); color: var(--accent-blue);
}
.download-pdf-btn svg { flex-shrink: 0; }

/* ── SPINNER ──────────────────────────────────── */
.spinner {
  display: inline-block; width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,0.15);
  border-top-color: #fff; border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle; margin-right: 6px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ══════════════════════════════════════════════
   HISTORY VIEW
══════════════════════════════════════════════ */
.view-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 32px 12px; flex-shrink: 0;
}
.view-header h2 {
  font-family: var(--font-ui); font-size: 1.1rem; font-weight: 500; color: var(--text);
}
.ghost-btn {
  font-family: var(--font-ui); font-size: 0.8rem; color: var(--text-2);
  background: transparent; border: none; cursor: pointer;
  padding: 6px 12px; border-radius: 8px; transition: all var(--trans);
}
.ghost-btn:hover { background: var(--bg3); color: var(--text); }

.history-list {
  flex: 1; overflow-y: auto; padding: 8px 32px 24px;
  display: flex; flex-direction: column; gap: 8px;
  -webkit-overflow-scrolling: touch;
}
.empty-state { color: var(--text-3); font-size: 0.85rem; text-align: center; margin-top: 60px; }

.history-item {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px 16px;
  display: flex; align-items: center; gap: 14px;
  cursor: pointer; transition: all var(--trans);
}
.history-item:hover { border-color: var(--border2); background: var(--bg3); }
.history-thumb { width: 60px; height: 42px; object-fit: cover; border-radius: 8px; border: 1px solid var(--border); flex-shrink: 0; }
.history-icon  { width: 60px; height: 42px; border-radius: 8px; background: var(--bg3); flex-shrink: 0; display: flex; align-items: center; justify-content: center; color: var(--text-3); }
.history-info  { flex: 1; min-width: 0; }
.history-name  { font-size: 0.82rem; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.history-meta  { font-size: 0.7rem; color: var(--text-3); margin-top: 2px; }
.verdict-pill  { font-size: 0.72rem; font-weight: 600; padding: 4px 12px; border-radius: 50px; flex-shrink: 0; }
.verdict-pill.fake { background: rgba(234,67,53,0.12); color: var(--fake); }
.verdict-pill.real { background: rgba(52,168,83,0.1);  color: var(--real); }

/* ══════════════════════════════════════════════
   SETTINGS VIEW
══════════════════════════════════════════════ */
.settings-body {
  flex: 1; overflow-y: auto; padding: 8px 32px 24px;
  display: flex; flex-direction: column; gap: 16px;
  -webkit-overflow-scrolling: touch;
}
.settings-card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 24px;
}
.settings-section-title {
  font-family: var(--font-ui); font-size: 0.78rem; font-weight: 500; color: var(--text-2);
  text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 14px;
}
.toggle-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 0; border-bottom: 1px solid var(--border);
  font-size: 0.85rem; color: var(--text); cursor: pointer;
}
.toggle-row:last-child { border-bottom: none; }
.toggle-row input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--accent-blue); cursor: pointer; }
.slider-row {
  display: flex; flex-direction: column; gap: 8px;
  padding: 10px 0; border-bottom: 1px solid var(--border);
  font-size: 0.85rem; color: var(--text);
}
.slider-row:last-child { border-bottom: none; }
.slider-header { display: flex; justify-content: space-between; }
.slider-header b { color: var(--accent-blue); font-weight: 600; }
.slider-row input[type=range] { width: 100%; accent-color: var(--accent-blue); }

/* ── INTRO ────────────────────────────────────── */
.intro-card { max-width: 560px; margin: 0 auto 0 0; }
.intro-title {
  font-family: var(--font-ui); font-size: 1.5rem; font-weight: 500;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-pur), var(--accent-cyan));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  margin-bottom: 12px;
}
.intro-body { font-size: 0.88rem; line-height: 1.75; color: var(--text-2); }
.intro-steps {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px 16px; margin: 12px 0;
  font-size: 0.82rem; line-height: 2.1;
}
.intro-steps b { color: var(--text); }

code {
  font-family: var(--font-mono); font-size: 0.8em;
  background: var(--bg3); padding: 2px 6px; border-radius: 4px; color: var(--accent-cyan);
}

/* ══════════════════════════════════════════════
   TABLET  ≤900px
══════════════════════════════════════════════ */
@media (max-width: 900px) {
  .frame-grid { grid-template-columns: repeat(3, 1fr); }
  .chip-grid  { grid-template-columns: repeat(3, 1fr); }

  .msg.bot  { padding: 12px 24px 12px 16px; }
  .msg.user { padding: 8px 16px 8px 40px; }

  .input-dock { padding: 8px 16px 16px; }

  .view-header   { padding: 16px 20px 10px; }
  .history-list  { padding: 8px 20px 20px; }
  .settings-body { padding: 8px 20px 20px; }
}

/* ══════════════════════════════════════════════
   MOBILE  ≤640px
   CRITICAL RULES — do not remove or reorder
══════════════════════════════════════════════ */
@media (max-width: 640px) {

  /* 1. Show mobile topbar */
  .mobile-topbar { display: flex; }

  /* 2. Sidebar becomes a slide-in drawer */
  .sidebar {
    position: fixed !important;
    top: 0; left: 0; bottom: 0;
    width: 280px;
    height: 100%;
    min-height: 100%;
    transform: translateX(-100%);
    z-index: 500;
    transition: transform 0.28s ease;
    box-shadow: 6px 0 28px rgba(0,0,0,0.6);
    /* Keep padding/flex from base rules */
  }
  .sidebar.open { transform: translateX(0); }

  /* 3. Main fills full viewport height */
  .main {
    height: 100vh;
    height: 100dvh; /* dynamic viewport height for mobile browsers */
    overflow: hidden;
  }

  /* 4. Chat view: strict flex column filling remaining height */
  #view-chat {
    display: flex !important;
    flex-direction: column !important;
    flex: 1 1 0 !important;
    min-height: 0 !important;
    height: 100% !important;
    overflow: hidden !important;
  }

  /* 5. Messages scrolls, fills available space */
  #view-chat .messages {
    flex: 1 1 0 !important;
    min-height: 0 !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch !important;
    padding: 12px 0 8px !important;
  }

  /* 6. Input dock: ALWAYS visible at bottom, never shrinks */
  .input-dock {
    flex-shrink: 0 !important;
    flex-grow: 0 !important;
    padding: 6px 10px !important;
    padding-bottom: max(14px, env(safe-area-inset-bottom, 14px)) !important;
    background: var(--bg) !important;
    border-top: 1px solid var(--border) !important;
    position: relative !important;
    z-index: 10 !important;
  }

  /* 7. Messages padding */
  .msg.bot  { padding: 10px 12px; }
  .msg.user { padding: 6px 12px; }
  .msg.user .msg-bubble { max-width: 88vw; font-size: 0.84rem; }

  /* 8. Input card internals */
  .gemini-input-card { border-radius: 20px; }
  .gemini-input-row  { padding: 8px 10px; min-height: 50px; gap: 2px; }

  .gemini-mode-pill      { padding: 5px 8px; font-size: 0.7rem; gap: 3px; }
  .gemini-mode-pill svg  { width: 12px; height: 12px; }
  .gemini-placeholder    { font-size: 0.78rem; padding: 0 4px; }
  .gemini-advanced-panel { flex-direction: column; }

  /* 9. Attach menu slides up from bottom of screen */
  .attach-menu {
    position: fixed !important;
    left: 0 !important; right: 0 !important; bottom: 0 !important;
    top: auto !important;
    border-radius: 18px 18px 0 0 !important;
    padding: 14px 12px !important;
    padding-bottom: max(28px, env(safe-area-inset-bottom, 28px)) !important;
    box-shadow: 0 -8px 32px rgba(0,0,0,0.6) !important;
    animation: slideUpMenu 0.2s ease !important;
    z-index: 600 !important;
    background: var(--bg2) !important;
    border: 1px solid var(--border2) !important;
    border-bottom: none !important;
  }
  @keyframes slideUpMenu {
    from { transform: translateY(100%); }
    to   { transform: translateY(0); }
  }
  .attach-option { padding: 14px 16px; font-size: 0.9rem; }

  /* 10. Grid adjustments */
  .chip-grid  { grid-template-columns: 1fr 1fr !important; gap: 6px !important; }
  .chip       { padding: 8px 10px; }
  .chip-label { font-size: 0.58rem; }
  .chip-value { font-size: 0.85rem; }

  .frame-grid    { grid-template-columns: 1fr 1fr !important; gap: 6px !important; }
  .frames-header { font-size: 0.68rem; }

  /* 11. Verdict banner */
  .verdict-banner { padding: 12px 14px; gap: 10px; }
  .verdict-icon   { width: 32px; height: 32px; font-size: 1rem; }
  .verdict-label  { font-size: 0.88rem; }
  .verdict-sub    { font-size: 0.72rem; }

  /* 12. History / Settings */
  .view-header   { padding: 14px 16px 10px; }
  .history-list  { padding: 8px 16px 24px; }
  .settings-body { padding: 8px 16px 24px; }

  .history-item  { padding: 12px; gap: 10px; }
  .history-thumb { width: 48px; height: 34px; }
  .history-icon  { width: 48px; height: 34px; }

  /* 13. Other components */
  .explanation-block  { padding: 12px 14px; font-size: 0.82rem; }
  .download-pdf-btn   { width: 100%; justify-content: center; padding: 11px 16px; }

  .intro-card  { max-width: 100%; }
  .intro-title { font-size: 1.2rem; }
  .intro-body  { font-size: 0.82rem; }
  .intro-steps { font-size: 0.78rem; line-height: 1.9; padding: 12px 14px; }

  .signal-wrap  { flex-direction: column; }
  .signal-table { min-width: unset; width: 100%; }
  .analysis-img { max-width: 100%; }
}

/* ══════════════════════════════════════════════
   VERY SMALL  ≤380px
══════════════════════════════════════════════ */
@media (max-width: 380px) {
  .gemini-mode-pill span:not(svg) { display: none; }
  .gemini-placeholder { font-size: 0.72rem; }
  .chip-value { font-size: 0.78rem; }
}