/* ═══════════════════════════════════════════════════════════════════════════
   Ambient Photos – Chromecast-style slideshow
   ═══════════════════════════════════════════════════════════════════════════ */

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #000;
  color: #fff;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Screens ────────────────────────────────────────────────────────────── */

.screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.8s ease;
  z-index: 1;
}

.screen.active {
  opacity: 1;
  pointer-events: auto;
  z-index: 10;
}

#screen-slideshow.active {
  z-index: 5;
}

/* ── Ambient background (auth & home) ───────────────────────────────────── */

.ambient-bg {
  position: absolute;
  inset: -120px;
  background:
    radial-gradient(ellipse at 25% 50%, rgba(100, 80, 220, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 75% 40%, rgba(50, 120, 220, 0.05) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(120, 50, 160, 0.04) 0%, transparent 40%);
  animation: drift 40s ease-in-out infinite alternate;
}

@keyframes drift {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(20px, -20px) scale(1.05); }
  100% { transform: translate(-20px, 20px) scale(1.02); }
}

.screen-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 2rem;
}

/* ── Brand ──────────────────────────────────────────────────────────────── */

.brand {
  margin-bottom: 1rem;
}

.brand-icon {
  display: block;
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
  opacity: 0.6;
}

.brand h1 {
  font-size: 3rem;
  font-weight: 200;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.tagline {
  font-size: 1.05rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

/* ── Buttons ────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  border: none;
  border-radius: 12px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 400;
  cursor: pointer;
  transition: all 0.2s ease;
  outline: none;
}

.btn:focus-visible {
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.4);
}

.btn-google {
  padding: 0.875rem 1.5rem;
  background: #fff;
  color: #1f1f1f;
}

.btn-google:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 30px rgba(255, 255, 255, 0.1);
}

.btn-google:active {
  transform: translateY(0);
}

.btn-primary {
  padding: 0.875rem 2rem;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
}

.btn-primary:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.22);
  transform: translateY(-1px);
}

.btn-resume {
  display: block;
  margin: 0.75rem auto 0;
  padding: 0.7rem 1.5rem;
  background: none;
  color: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 300;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-resume:hover {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.06);
}

.btn-text {
  display: block;
  margin: 1.5rem auto 0;
  padding: 0.5rem 1rem;
  background: none;
  color: rgba(255, 255, 255, 0.3);
  border: none;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  transition: color 0.2s;
}

.btn-text:hover {
  color: rgba(255, 255, 255, 0.55);
}

.footer {
  margin-top: 2.5rem;
  font-size: 0.75rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.2);
}

.footer a {
  color: rgba(255, 255, 255, 0.35);
  text-decoration: none;
  transition: color 0.2s;
}

.footer a:hover {
  color: rgba(255, 255, 255, 0.55);
}

/* ── Loading overlay ────────────────────────────────────────────────────── */

.loading {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  background: rgba(0, 0, 0, 0.88);
  z-index: 100;
  transition: opacity 0.4s ease;
}

.loading p {
  font-size: 0.9rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.45);
}

.spinner {
  width: 28px;
  height: 28px;
  border: 2px solid rgba(255, 255, 255, 0.12);
  border-top-color: rgba(255, 255, 255, 0.65);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Slideshow ──────────────────────────────────────────────────────────── */

#screen-slideshow {
  background: #000;
}

.slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 2.5s ease-in-out;
}

.slide.active {
  opacity: 1;
}

.slide-panel {
  overflow: hidden;
}

.slide-panel-pair {
  display: none;
}

.slide-panel img {
  will-change: transform;
}

/* Layout: landscape — single photo, full bleed */
.slide[data-layout="landscape"] .slide-panel {
  width: 100%;
  height: 100%;
}

.slide[data-layout="landscape"] .slide-panel img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Layout: pair — two portraits side by side */
.slide[data-layout="pair"] {
  gap: 3px;
}

.slide[data-layout="pair"] .slide-panel,
.slide[data-layout="pair"] .slide-panel-pair {
  display: block;
  flex: 1;
  min-width: 0;
  height: 100%;
}

.slide[data-layout="pair"] .slide-panel img,
.slide[data-layout="pair"] .slide-panel-pair img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ── Ken Burns variations ───────────────────────────────────────────────── */

@keyframes kb-tl {
  from { transform: scale(1) translate(0, 0); }
  to   { transform: scale(1.05) translate(-0.8%, -0.5%); }
}

@keyframes kb-tr {
  from { transform: scale(1) translate(0, 0); }
  to   { transform: scale(1.05) translate(0.8%, -0.5%); }
}

@keyframes kb-bl {
  from { transform: scale(1) translate(0, 0); }
  to   { transform: scale(1.05) translate(-0.8%, 0.5%); }
}

@keyframes kb-br {
  from { transform: scale(1) translate(0, 0); }
  to   { transform: scale(1.05) translate(0.8%, 0.5%); }
}

@keyframes kb-out-l {
  from { transform: scale(1.05) translate(-0.8%, -0.3%); }
  to   { transform: scale(1) translate(0, 0); }
}

@keyframes kb-out-r {
  from { transform: scale(1.05) translate(0.8%, -0.3%); }
  to   { transform: scale(1) translate(0, 0); }
}

/* ── Info overlay (clock + counter) ─────────────────────────────────────── */

.slideshow-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 5rem 2.5rem 2rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.32) 0%, transparent 100%);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  z-index: 10;
  pointer-events: none;
  user-select: none;
}

.info-left {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.clock-time {
  font-size: 4rem;
  font-weight: 200;
  line-height: 1;
  margin-left: -3px;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.6);
}

.photo-date {
  font-size: 1rem;
  font-weight: 300;
  opacity: 0.65;
  margin-top: 0.35rem;
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.6);
}

.photo-counter {
  font-size: 0.8rem;
  font-weight: 300;
  opacity: 0.35;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.7);
  font-variant-numeric: tabular-nums;
}

/* ── Controls bar ───────────────────────────────────────────────────────── */

.controls {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: 1.25rem 1.5rem;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.45) 0%, transparent 100%);
  display: flex;
  align-items: center;
  gap: 0.25rem;
  z-index: 20;
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.controls.visible {
  opacity: 1;
  pointer-events: auto;
}

.ctrl-spacer { flex: 1; }

.ctrl-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.08);
  border: none;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  transition: background 0.2s;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.ctrl-btn:hover {
  background: rgba(255, 255, 255, 0.18);
}

.ctrl-btn:focus-visible {
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.4);
  outline: none;
}

/* ── Idle state ─────────────────────────────────────────────────────────── */

body.idle { cursor: none; }

/* ── Utility ────────────────────────────────────────────────────────────── */

.hidden { display: none !important; }

/* ── Responsive ─────────────────────────────────────────────────────────── */

@media (max-width: 768px) {
  .brand h1 { font-size: 2.25rem; }
  .tagline  { font-size: 0.95rem; margin-bottom: 2rem; }

  .clock-time {
    font-size: 2.75rem;
  }

  .clock-date {
    font-size: 0.9rem;
  }

  .slideshow-info {
    padding: 4rem 1.5rem 1.5rem;
  }

  .controls {
    padding: 1rem;
  }

  .ctrl-btn {
    width: 40px;
    height: 40px;
  }
}