/* ==========================================================================
   Aperture — light theme
   Layout and palette follow Gemini's light interface: white canvas, soft
   gray surfaces, rounded pill controls, and a diffuse glow behind the prompt.
   The glow and accent that Gemini draws in blue are pale green here.
   ========================================================================== */

:root {
  --font: "DM Sans", "Google Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --bg: #ffffff;
  --sidebar-bg: #f8faf9;
  --surface: #f0f4f1;
  --hover: #eaf1ec;
  --selected: #e1efe6;
  --border: #e4e9e6;

  --text: #1f1f1f;
  --text-muted: #5f6368;
  --text-faint: #80868b;

  --accent: #c4ecd1;          /* pale green (Gemini's blue, replaced) */
  --accent-strong: #a9e0bd;
  --accent-ink: #0d3b25;      /* dark green text that sits on the accent */
  --accent-deep: #2f8f5f;     /* logo strokes, focus rings */

  --danger: #c5221f;
  --danger-bg: #fce8e6;

  /* The soft glow behind the prompt on Gemini's home screen, in green.
     Shared by the splash, the login page and the empty chat screen so they
     all look like one continuous surface. */
  --glow-bg:
    radial-gradient(55% 40% at 50% 62%, rgba(176, 228, 194, 0.85) 0%, rgba(176, 228, 194, 0) 100%),
    radial-gradient(28% 24% at 26% 70%, rgba(208, 242, 221, 0.8) 0%, rgba(208, 242, 221, 0) 100%),
    #ffffff;

  /* Legacy names, so older inline styles in app.js and shared pages still resolve. */
  --ink-950: var(--bg);
  --ink-900: var(--sidebar-bg);
  --ink-800: var(--surface);
  --ink-700: var(--hover);
  --ink-600: var(--selected);
  --line: var(--border);
  --paper: var(--text);
  --paper-dim: var(--text-muted);
  --brass: var(--accent);
  --brass-bright: var(--accent-strong);
  --font-display: var(--font);
  --font-body: var(--font);
  --radius-sm: 12px;
  --radius-md: 16px;
}

* { box-sizing: border-box; scrollbar-width: thin; scrollbar-color: #cdd8d1 transparent; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}

body.splash-active { overflow: hidden; }

.hidden { display: none !important; }

button, input, select { font-family: inherit; }
button { cursor: pointer; }
::selection { background: var(--accent); color: var(--accent-ink); }

/* ==========================================================================
   Shared controls
   ========================================================================== */

.primary-btn {
  background: var(--accent);
  color: var(--accent-ink);
  border: none;
  border-radius: 999px;
  padding: 11px 22px;
  font-weight: 600;
  font-size: 14px;
  transition: background 0.15s ease;
}
.primary-btn:hover { background: var(--accent-strong); }
.primary-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.ghost-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 999px;
  padding: 11px 22px;
  font-size: 14px;
  font-weight: 500;
}
.ghost-btn:hover { background: var(--hover); }

.link-btn {
  background: none;
  border: none;
  color: #2f6b4b;
  font-size: 14px;
  text-decoration: underline;
  text-underline-offset: 3px;
  padding: 6px;
}
.link-btn:hover { color: var(--accent-ink); }

.error-text {
  color: var(--danger);
  font-size: 13px;
  margin: 2px 0 0;
  min-height: 16px;
}

.password-form input,
.modal-card input {
  width: 100%;
  background: var(--surface);
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 13px 18px;
  font-size: 15px;
  color: var(--text);
}
.password-form input:focus,
.modal-card input:focus {
  outline: none;
  background: #fff;
  border-color: var(--accent-deep);
  box-shadow: 0 0 0 4px rgba(196, 236, 209, 0.6);
}

/* ==========================================================================
   Logo
   ========================================================================== */

.logo-svg { display: block; }

/* ==========================================================================
   Splash screen — clicking it shatters like glass (see splash.js)
   ========================================================================== */

.splash-screen {
  position: fixed;
  inset: 0;
  z-index: 9999;
  cursor: pointer;
  overflow: hidden;
  outline: none;
}

.splash-stage {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--glow-bg);
}

.splash-logo {
  width: 120px;
  height: 120px;
  animation: splash-in 0.9s cubic-bezier(0.2, 0.7, 0.2, 1) both,
             splash-breathe 3.6s ease-in-out 0.9s infinite;
}

.splash-title {
  margin: 22px 0 6px;
  font-size: clamp(46px, 7.5vw, 88px);
  font-weight: 500;
  letter-spacing: -0.03em;
  color: #1c2a22;
  animation: splash-rise 0.9s cubic-bezier(0.2, 0.7, 0.2, 1) 0.1s both;
}

.splash-tag {
  margin: 0;
  font-size: 18px;
  color: var(--text-muted);
  animation: splash-rise 0.9s cubic-bezier(0.2, 0.7, 0.2, 1) 0.25s both;
}

.splash-hint {
  position: absolute;
  bottom: 9vh;
  left: 0;
  right: 0;
  font-size: 14px;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  animation: splash-rise 0.9s ease 0.6s both, splash-pulse 2.6s ease-in-out 1.5s infinite;
}

@keyframes splash-in {
  from { opacity: 0; transform: scale(0.8); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes splash-rise {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes splash-breathe {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.04); }
}
@keyframes splash-pulse {
  0%, 100% { opacity: 0.55; }
  50%      { opacity: 1; }
}

/* Glass pieces made by splash.js */
.splash-screen.is-shattering { cursor: default; pointer-events: none; }

.shard {
  position: absolute;
  overflow: hidden;
  will-change: transform, opacity;
  backface-visibility: hidden;
}
.shard-content { position: absolute; }
.shard-content, .shard-content * { animation: none !important; }
.shard-sheen { position: absolute; inset: 0; opacity: 0; pointer-events: none; }

.shatter-cracks-wrap, .shatter-layer { position: absolute; inset: 0; pointer-events: none; }
.shatter-cracks-wrap { z-index: 2; }
.shatter-cracks-wrap svg { position: absolute; inset: 0; filter: drop-shadow(0 0 1px rgba(255, 255, 255, 0.9)); }

.shatter-flash {
  position: absolute;
  z-index: 3;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  pointer-events: none;
  background: radial-gradient(circle, rgba(255, 255, 255, 1) 0%, rgba(120, 210, 160, 0.45) 38%, rgba(120, 210, 160, 0) 70%);
}

/* ==========================================================================
   Lock / face-login screen
   ========================================================================== */

.lock-screen {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glow-bg);
}

.lock-card {
  width: min(400px, 92vw);
  text-align: center;
  padding: 32px 28px;
}

.lock-logo { width: 64px; height: 64px; margin: 0 auto 6px; }

.lock-card h1 {
  margin: 0 0 8px;
  font-size: 40px;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.lock-sub {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.45;
  margin: 0 0 24px;
}

.unauthorized-text {
  display: block;
  font-size: 26px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--danger);
}

.camera-frame {
  position: relative;
  width: 220px;
  height: 220px;
  margin: 0 auto 20px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid #b9e3c8;
  background: var(--surface);
  box-shadow: 0 0 0 10px rgba(196, 236, 209, 0.45), 0 12px 32px rgba(47, 143, 95, 0.16);
}

.camera-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scaleX(-1);
}

.scan-line {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, #3fae78, transparent);
  animation: scan 2.4s ease-in-out infinite;
}

@keyframes scan {
  0%   { top: 8%; }
  50%  { top: 88%; }
  100% { top: 8%; }
}

.password-form {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.input-with-mic { display: flex; gap: 8px; }
.input-with-mic input { flex: 1; }

.mic-btn {
  background: var(--surface);
  border: none;
  border-radius: 999px;
  width: 48px;
  font-size: 16px;
  color: var(--text);
}
.mic-btn:hover { background: var(--hover); }

.listening {
  background: var(--danger-bg) !important;
  color: var(--danger);
  animation: pulse-mic 1s ease-in-out infinite;
}
@keyframes pulse-mic {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.6; }
}

/* ==========================================================================
   App shell + sidebar
   ========================================================================== */

.app-shell {
  height: 100vh;
  display: grid;
  grid-template-columns: 288px 1fr;
}

.sidebar {
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 16px 12px;
  min-height: 0;
}

.sidebar-header {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 12px;
  padding: 0 4px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 21px;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.brand-logo { width: 30px; height: 30px; }

.new-chat-btn {
  background: var(--selected);
  border: none;
  color: var(--accent-ink);
  border-radius: 999px;
  padding: 11px 16px;
  font-size: 14px;
  font-weight: 600;
  text-align: left;
  transition: background 0.15s ease;
}
.new-chat-btn:hover { background: var(--accent); }

.search-input {
  width: 100%;
  background: var(--surface);
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 10px 16px;
  color: var(--text);
  font-size: 14px;
}
.search-input:focus {
  outline: none;
  background: #fff;
  border-color: var(--accent-deep);
}

.chat-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-height: 0;
  margin-top: 6px;
}

.chat-section-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  padding: 14px 14px 6px;
}

.chat-item {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding: 9px 8px 9px 14px;
  border-radius: 999px;
  font-size: 14px;
  color: var(--text);
  cursor: pointer;
}
.chat-item:hover { background: var(--hover); }
.chat-item.active { background: var(--selected); font-weight: 500; }

.chat-item-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-menu-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1;
  padding: 4px 8px;
  border-radius: 999px;
  opacity: 0;
  transition: opacity 0.15s ease;
}
.chat-item:hover .chat-menu-btn,
.chat-item.active .chat-menu-btn { opacity: 1; }
.chat-menu-btn:hover { background: rgba(0, 0, 0, 0.07); color: var(--text); }

.chat-context-menu {
  position: fixed;
  z-index: 999;
  min-width: 150px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 6px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.16);
}
.chat-context-item {
  padding: 9px 12px;
  border-radius: 10px;
  font-size: 14px;
  cursor: pointer;
}
.chat-context-item:hover { background: var(--hover); }
.chat-context-item.danger { color: var(--danger); }
.chat-context-item.danger:hover { background: var(--danger-bg); }

.search-result-item { padding: 9px 14px; border-radius: 16px; cursor: pointer; }
.search-result-item:hover { background: var(--hover); }
.search-result-title { font-size: 14px; font-weight: 500; margin-bottom: 2px; }
.search-result-snippet {
  font-size: 12.5px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.search-result-snippet mark { background: var(--accent); color: var(--accent-ink); border-radius: 3px; padding: 0 2px; }

.quick-launch-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
  padding: 10px 4px;
  margin-top: 6px;
  border-top: 1px solid var(--border);
}
.launch-btn {
  background: var(--surface);
  border: none;
  border-radius: 12px;
  padding: 8px 0;
  font-size: 15px;
  transition: background 0.15s ease, transform 0.1s ease;
}
.launch-btn:hover { background: var(--accent); }
.launch-btn:active { transform: scale(0.94); }

.sidebar-footer { display: flex; flex-direction: column; gap: 2px; padding-top: 4px; }
.sidebar-footer .link-btn {
  width: 100%;
  text-align: left;
  text-decoration: none;
  padding: 9px 14px;
  border-radius: 999px;
  color: var(--text-muted);
}
.sidebar-footer .link-btn:hover { background: var(--hover); color: var(--text); }

/* ==========================================================================
   Main panel
   ========================================================================== */

.main-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100vh;
  min-width: 0;
  background: var(--bg);
}

.main-header { padding: 16px 28px 6px; }
.main-header h2 { margin: 0; font-size: 16px; font-weight: 500; color: var(--text-muted); }

.message-list {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 16px max(24px, calc((100% - 820px) / 2)) 24px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

/* Empty chat: centred greeting and prompt over the green glow, like Gemini's home screen. */
.main-panel:has(.empty-state) {
  justify-content: center;
  background:
    radial-gradient(52% 38% at 50% 64%, rgba(176, 228, 194, 0.8) 0%, rgba(176, 228, 194, 0) 100%),
    radial-gradient(30% 26% at 27% 72%, rgba(208, 242, 221, 0.8) 0%, rgba(208, 242, 221, 0) 100%),
    #ffffff;
}
.main-panel:has(.empty-state) .main-header { position: absolute; top: 0; left: 0; right: 0; }
.main-panel:has(.empty-state) .message-list { flex: 0 0 auto; overflow: visible; padding-bottom: 30px; }

.empty-state { margin: 0; text-align: center; }
.empty-state p { margin: 0; font-size: 0; line-height: 0; }
.empty-state p::before {
  content: "Ready when you are";
  display: block;
  font-size: clamp(34px, 4.4vw, 52px);
  line-height: 1.15;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: #2b2f2d;
}

.message { font-size: 16px; line-height: 1.7; }
.message.user {
  align-self: flex-end;
  max-width: 78%;
  background: var(--surface);
  padding: 12px 20px;
  border-radius: 24px;
}
.message.assistant { align-self: flex-start; padding: 0 4px; background: none; border: none; }

.message-wrapper { position: relative; display: flex; align-items: flex-start; gap: 6px; }
.message-wrapper.user { align-self: flex-end; flex-direction: row-reverse; max-width: 78%; }
.message-wrapper.assistant { align-self: flex-start; width: 100%; }
.message-wrapper .message { max-width: 100%; align-self: auto; }

.message-delete-btn {
  background: none;
  border: none;
  color: var(--text-faint);
  font-size: 13px;
  padding: 6px;
  border-radius: 999px;
  opacity: 0;
  transition: opacity 0.15s ease;
}
.message-wrapper:hover .message-delete-btn { opacity: 1; }
.message-delete-btn:hover { color: var(--danger); background: var(--danger-bg); }

.message.assistant p { margin: 0 0 12px; }
.message.assistant p:last-child { margin-bottom: 0; }
.message.assistant ul { margin: 4px 0 12px 20px; padding: 0; }
.message.assistant li { margin-bottom: 6px; }

.message img {
  display: block;
  max-width: 100%;
  max-height: 520px;
  margin-top: 12px;
  border-radius: 18px;
}

.file-download {
  display: inline-block;
  margin-top: 12px;
  padding: 10px 18px;
  background: var(--accent);
  color: var(--accent-ink);
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
}
.file-download:hover { background: var(--accent-strong); }

/* ---------- Composer (prompt pill) ---------- */

.attachment-chip {
  align-self: center;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--selected);
  color: var(--accent-ink);
  border-radius: 999px;
  padding: 8px 8px 8px 16px;
  margin-bottom: 10px;
  font-size: 13.5px;
  font-weight: 500;
}
.chip-remove {
  background: rgba(0, 0, 0, 0.06);
  border: none;
  border-radius: 50%;
  width: 22px;
  height: 22px;
  font-size: 11px;
  color: var(--accent-ink);
}
.chip-remove:hover { background: var(--danger-bg); color: var(--danger); }

.composer {
  flex-shrink: 0;
  width: min(820px, calc(100% - 48px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 4px;
  background: #fff;
  border-radius: 34px;
  padding: 8px 10px 8px 14px;
  box-shadow: 0 2px 12px rgba(32, 33, 36, 0.12), 0 0 0 1px rgba(32, 33, 36, 0.04);
}
.composer:focus-within { box-shadow: 0 4px 18px rgba(32, 33, 36, 0.16), 0 0 0 1.5px var(--accent-strong); }

.composer input[type="text"] {
  flex: 1;
  min-width: 0;
  background: transparent;
  border: none;
  outline: none;
  padding: 12px 8px;
  font-size: 16px;
  color: var(--text);
}
.composer input[type="text"]::placeholder { color: var(--text-faint); }

.composer button.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: none;
  background: transparent;
  font-size: 18px;
  padding: 0;
}
.composer button.icon-btn:hover { background: var(--hover); }

#mode-select {
  appearance: none;
  -webkit-appearance: none;
  border: none;
  background: transparent url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24'%3E%3Cpath fill='%235f6368' d='M7 10l5 5 5-5z'/%3E%3C/svg%3E") no-repeat right 8px center;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  padding: 9px 28px 9px 14px;
  border-radius: 999px;
  cursor: pointer;
  field-sizing: content; /* shrink to the chosen option (modern Chrome); harmless elsewhere */
}
#mode-select:hover { background-color: var(--hover); }
#mode-select:focus { outline: none; background-color: var(--hover); }
#mode-select option { color: var(--text); background: #fff; }

.upload-status {
  flex-shrink: 0;
  text-align: center;
  margin: 8px 0 14px;
  min-height: 18px;
  font-size: 12.5px;
  color: var(--text-muted);
}

.monitor-feed { position: fixed; width: 1px; height: 1px; opacity: 0; pointer-events: none; }

/* ==========================================================================
   Modals
   ========================================================================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(31, 31, 31, 0.38);
}

.modal-card {
  width: min(380px, 92vw);
  background: #fff;
  border-radius: 28px;
  padding: 28px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.22);
}
.modal-card h3 { margin: 0 0 8px; font-size: 20px; font-weight: 600; }
.modal-text { color: var(--text-muted); font-size: 14px; line-height: 1.45; margin: 0 0 16px; }
.modal-card input { margin-bottom: 12px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; }

/* ==========================================================================
   Shoulder-surfing alert
   ========================================================================== */

.shoulder-surf-blur #app-shell { filter: blur(14px); transition: filter 0.2s ease; }
.shoulder-surf-banner {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  background: var(--danger);
  color: #fff;
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

/* ==========================================================================
   Shared-chat page (shared.html)
   ========================================================================== */

.shared-page { max-width: 780px; margin: 0 auto; padding: 36px 20px 80px; }
.shared-brand { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 500; color: var(--text-muted); }
.shared-brand .logo-svg { width: 26px; height: 26px; }
.shared-title { font-size: 30px; font-weight: 500; letter-spacing: -0.02em; margin: 22px 0 28px; }
.shared-messages { display: flex; flex-direction: column; gap: 22px; }
.shared-note { font-size: 13px; color: var(--text-muted); margin-top: 8px; }

/* ==========================================================================
   Small screens and reduced motion
   ========================================================================== */

@media (max-width: 760px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .splash-logo, .splash-title, .splash-tag, .splash-hint, .scan-line { animation: none; }
}