:root {
  --navy-950: #070f24;
  --navy-900: #0b1a3a;
  --navy-800: #112652;
  --royal: #1d3f8f;
  --royal-soft: #27499a;
  --saffron: #e08a2c;
  --gold: #c9a54a;
  --white: #f5f7fb;
  --text: #eef2fa;
  --text-dim: #a9b6d3;
  --line: rgba(201, 165, 74, 0.18);
  --bubble-user: #1d3f8f;
  --bubble-ai: rgba(11, 26, 58, 0.72);
  --radius: 16px;
  --max-w: 760px;
  --font: "Inter", "Noto Sans Gurmukhi", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: light) {
  /* The product is a dark-theme experience; keep the same palette in all modes. */
  :root:not([data-theme="light"]) { color-scheme: dark; }
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  background: var(--navy-950);
  color: var(--text);
  font-family: var(--font);
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
}

[hidden] { display: none !important; }

body { overflow: hidden; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* ---------- Layout ---------- */
.app {
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  padding-top: env(safe-area-inset-top);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px clamp(14px, 3vw, 28px);
  background: rgba(7, 15, 36, 0.92);
  border-bottom: 1px solid var(--line);
  z-index: 3;
}

.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand-logo { width: 36px; height: 36px; border-radius: 50%; flex: none; }
.brand-text { display: flex; flex-direction: column; min-width: 0; line-height: 1.15; }
.wordmark {
  font-weight: 600;
  letter-spacing: 0.14em;
  font-size: 15px;
  color: var(--white);
}
.tagline {
  font-size: 11.5px;
  color: var(--gold);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ai-pill {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 3px 7px;
  border-radius: 999px;
  border: 1px solid var(--saffron);
  color: var(--saffron);
  flex: none;
}

.topbar-actions { display: flex; align-items: center; gap: 8px; flex: none; }

.btn-ghost, .icon-btn, .btn-primary, .send-btn, .prompt-card {
  font: inherit;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, opacity 0.2s ease, transform 0.15s ease;
  -webkit-tap-highlight-color: transparent;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  font-size: 14px;
}
.btn-ghost:hover { background: rgba(29, 63, 143, 0.35); border-color: var(--gold); }
.btn-ghost svg, .icon-btn svg, .send-btn svg {
  width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8;
  stroke-linecap: round; stroke-linejoin: round;
}

.icon-btn {
  width: 36px; height: 36px;
  display: inline-grid; place-items: center;
  border-radius: 10px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-dim);
}
.icon-btn:hover { color: var(--white); background: rgba(29, 63, 143, 0.35); }
.icon-btn.small { width: 28px; height: 28px; }
.icon-btn.small svg { width: 14px; height: 14px; }
.icon-btn:focus-visible, .btn-ghost:focus-visible, .send-btn:focus-visible,
.prompt-card:focus-visible, .btn-primary:focus-visible {
  outline: 2px solid var(--gold); outline-offset: 2px;
}

/* ---------- Background photograph ---------- */
.stage-wrap {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.stage-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: var(--navy-950);
}
.stage-bg img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 62% 18%;
  opacity: 0.9;
  filter: saturate(1.05) contrast(1.05);
}
.stage-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(7, 15, 36, 0.25) 0%, rgba(7, 15, 36, 0.55) 60%, rgba(7, 15, 36, 0.92) 100%),
    linear-gradient(90deg, rgba(7, 15, 36, 0.55) 0%, rgba(7, 15, 36, 0.05) 75%);
}

.stage {
  position: relative;
  z-index: 1;
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
  padding: 0 clamp(16px, 4vw, 32px);
}

/* ---------- Welcome ---------- */
.welcome {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: clamp(36px, 10vh, 110px) 0 24px;
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.welcome.leaving { opacity: 0; transform: translateY(-8px); }
.welcome-kicker {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
  color: var(--saffron);
}
.welcome-title {
  margin: 0;
  font-size: clamp(56px, 13vw, 120px);
  line-height: 0.95;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--white);
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}
.welcome-bubble {
  display: inline-block;
  margin-top: 22px;
  max-width: 420px;
  padding: 14px 18px;
  border-radius: 18px 18px 18px 4px;
  background: var(--white);
  color: var(--navy-900);
  font-size: 17px;
  font-weight: 500;
  line-height: 1.45;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}
.welcome-sub {
  margin: 10px 0 0;
  font-size: clamp(19px, 2.6vw, 24px);
  color: var(--gold);
  font-weight: 500;
}
.welcome-text {
  margin: 14px 0 28px;
  max-width: 520px;
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.6;
}
.prompt-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.prompt-card {
  text-align: left;
  padding: 16px 18px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(11, 26, 58, 0.6);
  color: var(--text);
  font-size: 15px;
  line-height: 1.4;
}
.prompt-card:hover {
  border-color: var(--gold);
  background: rgba(17, 38, 82, 0.85);
}
.prompt-card:active { transform: scale(0.99); }

/* ---------- Messages ---------- */
.messages {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 8px 0 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.messages:empty { display: none; }

.msg {
  display: flex;
  flex-direction: column;
  animation: msg-in 0.28s ease both;
}
.msg-user { align-items: flex-end; }
.msg-ai { align-items: flex-start; }

@keyframes msg-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.bubble {
  max-width: min(88%, 620px);
  padding: 12px 16px;
  border-radius: 18px;
  font-size: 16px;
  line-height: 1.6;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.msg-user .bubble {
  background: var(--bubble-user);
  color: var(--white);
  border-bottom-right-radius: 6px;
  white-space: pre-wrap;
}
.msg-ai .bubble {
  background: var(--bubble-ai);
  border: 1px solid var(--line);
  border-bottom-left-radius: 6px;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  max-width: 100%;
  width: 100%;
}
.msg-error .bubble {
  background: rgba(120, 28, 28, 0.35);
  border: 1px solid rgba(240, 120, 120, 0.4);
}

.bubble p { margin: 0 0 10px; }
.bubble p:last-child { margin-bottom: 0; }
.bubble h3, .bubble h4 { margin: 14px 0 6px; line-height: 1.3; color: var(--white); }
.bubble h3 { font-size: 18px; }
.bubble h4 { font-size: 16px; }
.bubble ul, .bubble ol { margin: 6px 0 10px; padding-left: 22px; }
.bubble li { margin: 3px 0; }
.bubble strong { color: var(--white); font-weight: 600; }
.bubble a { color: var(--gold); text-decoration: underline; text-underline-offset: 2px; }
.bubble code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
  background: rgba(0, 0, 0, 0.35);
  padding: 1px 5px;
  border-radius: 5px;
}
.bubble pre {
  background: rgba(0, 0, 0, 0.4);
  padding: 12px;
  border-radius: 10px;
  overflow-x: auto;
  white-space: pre;
}
.bubble pre code { background: none; padding: 0; }

.user-image {
  display: block;
  max-width: 220px;
  max-height: 220px;
  width: auto;
  height: auto;
  border-radius: 12px;
  margin-bottom: 8px;
  margin-left: auto;
}

.msg-actions {
  display: flex;
  gap: 4px;
  margin-top: 6px;
  margin-left: 6px;
}
.msg-actions .icon-btn { width: 30px; height: 30px; }
.msg-actions .icon-btn svg { width: 15px; height: 15px; }
.msg-actions .icon-btn.copied { color: var(--gold); }

/* Typing indicator */
.typing {
  display: inline-flex;
  gap: 5px;
  padding: 14px 16px;
  background: var(--bubble-ai);
  border: 1px solid var(--line);
  border-radius: 18px;
  border-bottom-left-radius: 6px;
}
.typing span {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--gold);
  opacity: 0.35;
  animation: dot 1.1s infinite ease-in-out;
}
.typing span:nth-child(2) { animation-delay: 0.15s; }
.typing span:nth-child(3) { animation-delay: 0.3s; }
@keyframes dot {
  0%, 80%, 100% { opacity: 0.25; transform: translateY(0); }
  40% { opacity: 1; transform: translateY(-3px); }
}

/* ---------- Composer ---------- */
.composer-wrap {
  flex: none;
  padding: 10px clamp(12px, 3vw, 24px) calc(10px + env(safe-area-inset-bottom));
  background: rgba(7, 15, 36, 0.96);
  border-top: 1px solid var(--line);
}

.attach-preview {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: var(--max-w);
  margin: 0 auto 8px;
  padding: 6px 8px 6px 6px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(11, 26, 58, 0.8);
  animation: msg-in 0.2s ease both;
}
.attach-preview img {
  width: 44px; height: 44px; object-fit: cover; border-radius: 8px;
}
.attach-name {
  flex: 1; min-width: 0; font-size: 13px; color: var(--text-dim);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.composer {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: flex-end;
  gap: 6px;
  padding: 6px 6px 6px 8px;
  background: var(--navy-900);
  border: 1px solid rgba(201, 165, 74, 0.3);
  border-radius: 22px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.35);
}
.composer:focus-within { border-color: var(--gold); }

.composer-tools { display: flex; align-items: center; gap: 2px; flex: none; }
.composer-tools .icon-btn { width: 34px; height: 34px; }

#input {
  flex: 1;
  min-width: 0;
  resize: none;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 16px; /* 16px prevents iOS Safari zoom on focus */
  line-height: 1.5;
  padding: 9px 4px;
  max-height: 180px;
  overflow-y: auto;
}
#input::placeholder { color: #7f8db0; }

.send-btn {
  width: 38px; height: 38px;
  flex: none;
  display: inline-grid; place-items: center;
  border-radius: 50%;
  border: 0;
  background: var(--gold);
  color: var(--navy-950);
}
.send-btn:hover:not(:disabled) { background: #d9b45e; }
.send-btn:active:not(:disabled) { transform: scale(0.94); }
.send-btn:disabled { background: rgba(201, 165, 74, 0.25); color: rgba(7, 15, 36, 0.6); cursor: default; }
.send-btn svg { width: 18px; height: 18px; stroke-width: 2.2; }
.send-btn.busy { opacity: 0.6; }

.fineprint {
  max-width: var(--max-w);
  margin: 8px auto 0;
  text-align: center;
  font-size: 11.5px;
  line-height: 1.45;
  color: var(--text-dim);
  opacity: 0.85;
}

/* ---------- Info dialog ---------- */
.info-dialog {
  width: min(92vw, 480px);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 0;
  background: var(--navy-900);
  color: var(--text);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}
.info-dialog::backdrop { background: rgba(3, 8, 20, 0.7); }
.info-body { padding: 24px; line-height: 1.6; font-size: 15px; }
.info-body h2 { margin: 0 0 10px; font-size: 20px; color: var(--white); }
.info-body p { margin: 0 0 12px; color: var(--text-dim); }
.info-body strong { color: var(--white); }
.info-body a { color: var(--gold); }
.info-privacy { font-size: 13px; }
.btn-primary {
  margin-top: 6px;
  height: 40px;
  padding: 0 18px;
  border-radius: 10px;
  border: 0;
  background: var(--gold);
  color: var(--navy-950);
  font-weight: 600;
  font-size: 14px;
}
.btn-primary:hover { background: #d9b45e; }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .stage-bg img { object-position: 68% 20%; opacity: 0.85; }
  .btn-ghost span { display: none; }
  .btn-ghost { width: 36px; padding: 0; justify-content: center; }
  .tagline { display: none; }
  .bubble { max-width: 92%; }
  .msg-ai .bubble { max-width: 100%; }
  .welcome { padding-top: 28px; }
  .welcome-text { margin-bottom: 20px; }
  .fineprint { font-size: 10.5px; }
}

@media (max-width: 380px) {
  .wordmark { font-size: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}