/* ============================================================
   DiaViewer — "Huiskameravond, 1972"

   Evokes the warmth of a darkened living room with a Kodak
   Carousel projector clicking through family slides. Deep
   charcoal blacks, warm amber projector-bulb glow, film grain,
   and the slide mount as visual motif.
   ============================================================ */

/* === Custom Properties === */
:root {
  /* The darkness of a room with curtains drawn */
  --bg-deep: #0c0b0f;
  --bg-room: #151318;
  --bg-surface: #1e1b22;
  --bg-elevated: #272430;

  /* The warm glow of a projector bulb */
  --amber: #d4a843;
  --amber-bright: #e8c25a;
  --amber-dim: #a07830;
  --amber-glow: rgba(212, 168, 67, 0.08);
  --amber-glow-strong: rgba(212, 168, 67, 0.18);

  /* Slide mount cardboard */
  --mount-border: #3a3530;
  --mount-bg: rgba(58, 53, 48, 0.3);

  /* Warm text tones — like aged paper */
  --text-primary: #e8dcc8;
  --text-secondary: #b0a590;
  --text-dim: #787060;

  /* Functional */
  --error: #c85a4a;
  --radius: 4px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);

  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Libre Baskerville', Georgia, serif;
}

/* === Base Reset === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Subtle film grain overlay on the entire app */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.5;
}

a {
  color: var(--amber);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--amber-bright);
}

::selection {
  background: var(--amber);
  color: var(--bg-deep);
}

/* === Loading === */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-style: italic;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

.loading::after {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--amber-dim);
  margin-left: 0.5rem;
  animation: pulse-dot 1.4s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 0.2; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.8); }
}

/* ============================================================
   LOGIN PAGE
   — A projector warming up in a dark room
   ============================================================ */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background: var(--bg-deep);
  position: relative;
  overflow: hidden;
}

/* Projector light cone effect */
.login-page::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(212, 168, 67, 0.06) 0%,
    rgba(212, 168, 67, 0.02) 40%,
    transparent 70%
  );
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.login-box {
  text-align: center;
  padding: 3rem 3.5rem;
  border: 1px solid var(--mount-border);
  border-radius: var(--radius);
  background: var(--bg-surface);
  position: relative;
  animation: fade-up 0.8s ease-out;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.03) inset,
    0 20px 60px rgba(0, 0, 0, 0.5);
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.projector-icon {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: var(--amber-dim);
  opacity: 0.5;
  letter-spacing: 0.3em;
}

.login-box h1 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: 0.15rem;
  letter-spacing: 0.02em;
}

.login-box .subtitle {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-style: italic;
  color: var(--text-dim);
  margin-bottom: 2.5rem;
  letter-spacing: 0.1em;
}

.login-box form {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.login-box input {
  padding: 0.85rem 1.2rem;
  border: 1px solid var(--mount-border);
  border-radius: var(--radius);
  background: var(--bg-deep);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: var(--font-body);
  text-align: center;
  letter-spacing: 0.15em;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.login-box input:focus {
  outline: none;
  border-color: var(--amber-dim);
  box-shadow: 0 0 0 1px var(--amber-dim);
}

.login-box input::placeholder {
  color: var(--text-dim);
  font-style: italic;
  letter-spacing: 0.05em;
}

.login-box button {
  padding: 0.85rem;
  border: 1px solid var(--amber);
  border-radius: var(--radius);
  background: transparent;
  color: var(--amber);
  font-size: 0.9rem;
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition);
}

.login-box button:hover:not(:disabled) {
  background: var(--amber);
  color: var(--bg-deep);
}

.login-box button:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.error {
  color: var(--error);
  font-size: 0.85rem;
  font-style: italic;
}

/* ============================================================
   OVERVIEW PAGE
   — The slide carousel tray, viewed from above
   ============================================================ */
.overview-page {
  max-width: 840px;
  margin: 0 auto;
  padding: 3rem 2rem 4rem;
  animation: fade-up 0.6s ease-out;
}

.overview-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--mount-border);
  flex-wrap: wrap;
  gap: 1rem;
}

.overview-header h1 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: 0.03em;
}

.header-actions {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

/* Buttons — understated, warm */
.btn {
  padding: 0.45rem 1rem;
  border: 1px solid var(--mount-border);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.78rem;
  cursor: pointer;
  transition: all var(--transition);
  display: inline-block;
  letter-spacing: 0.02em;
}

.btn:hover {
  border-color: var(--amber-dim);
  color: var(--amber);
}

.btn-download {
  border-color: var(--amber-dim);
  color: var(--amber);
}

.btn-download:hover {
  background: var(--amber);
  color: var(--bg-deep);
}

.btn-logout {
  color: var(--text-dim);
  border-color: transparent;
}

.btn-logout:hover {
  border-color: var(--mount-border);
  color: var(--text-secondary);
}

/* === Tray List === */
.tray-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.tray-card {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1rem 1.4rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}

.tray-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 2px;
  height: 0;
  background: var(--amber);
  border-radius: 1px;
  transition: height var(--transition);
}

.tray-card:hover {
  background: var(--amber-glow);
  border-color: var(--mount-border);
}

.tray-card:hover::before {
  height: 60%;
}

.tray-letter {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--amber);
  width: 2.8rem;
  text-align: center;
  flex-shrink: 0;
  line-height: 1;
}

.tray-info {
  flex: 1;
  min-width: 0;
}

.tray-summary {
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

.tray-count {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
  font-style: italic;
}

.tray-actions {
  display: flex;
  gap: 0.3rem;
  flex-shrink: 0;
}

.btn-icon {
  background: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0.35rem 0.5rem;
  font-size: 1rem;
  cursor: pointer;
  color: var(--text-dim);
  transition: all var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-icon:hover {
  color: var(--amber);
  border-color: var(--mount-border);
  background: var(--amber-glow);
}

/* ============================================================
   MODAL — Index photo overlay
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 7, 10, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: fade-in 0.3s ease-out;
  backdrop-filter: blur(8px);
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-content {
  background: var(--bg-surface);
  border: 1px solid var(--mount-border);
  border-radius: var(--radius);
  padding: 2rem;
  max-width: 90vw;
  max-height: 90vh;
  overflow: auto;
  position: relative;
  animation: modal-enter 0.35s ease-out;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
}

@keyframes modal-enter {
  from { opacity: 0; transform: scale(0.96) translateY(8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close {
  position: absolute;
  top: 0.6rem;
  right: 0.8rem;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.4rem;
  cursor: pointer;
  transition: color var(--transition);
  line-height: 1;
  padding: 0.2rem;
}

.modal-close:hover {
  color: var(--amber);
}

.modal-content h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
  letter-spacing: 0.05em;
}

.index-photo {
  max-width: 100%;
  max-height: 75vh;
  border-radius: 2px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

/* ============================================================
   SLIDESHOW PAGE
   — The projected image on the living room wall
   ============================================================ */
.slideshow-page {
  position: fixed;
  inset: 0;
  background: var(--bg-deep);
  display: flex;
  flex-direction: column;
}

/* Vignette overlay — simulates projector light falloff */
.slideshow-page::before {
  content: '';
  position: fixed;
  inset: 0;
  background: radial-gradient(
    ellipse at center,
    transparent 0%,
    transparent 50%,
    rgba(12, 11, 15, 0.3) 75%,
    rgba(12, 11, 15, 0.7) 100%
  );
  pointer-events: none;
  z-index: 5;
}

.slide-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 3.5rem 4rem 3.5rem;
}

.slide-vignette {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.slide-image {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 1px;
  animation: slide-appear 0.5s ease-out;
  /* Warm projector glow behind the slide */
  box-shadow:
    0 0 80px rgba(212, 168, 67, 0.08),
    0 0 200px rgba(212, 168, 67, 0.04),
    0 2px 20px rgba(0, 0, 0, 0.5);
}

@keyframes slide-appear {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Navigation arrows — minimal, appear on hover */
.nav-arrow {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(12, 11, 15, 0.6);
  border: 1px solid rgba(58, 53, 48, 0.4);
  color: var(--text-dim);
  font-size: 1.3rem;
  padding: 1.2rem 0.7rem;
  cursor: pointer;
  z-index: 10;
  border-radius: var(--radius);
  transition: all var(--transition);
  opacity: 0;
}

.slideshow-page:hover .nav-arrow {
  opacity: 1;
}

.nav-arrow:hover:not(:disabled) {
  background: var(--amber-glow-strong);
  border-color: var(--amber-dim);
  color: var(--amber);
}

.nav-arrow:disabled {
  opacity: 0 !important;
  cursor: default;
}

.nav-left {
  left: 0.8rem;
}

.nav-right {
  right: 0.8rem;
}

/* Top bar — fades in on hover */
.slideshow-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.7rem 1.2rem;
  background: linear-gradient(to bottom, rgba(12, 11, 15, 0.85) 0%, transparent 100%);
  z-index: 10;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.slideshow-page:hover .slideshow-topbar {
  opacity: 1;
}

.btn-back {
  background: none;
  border: 1px solid var(--mount-border);
  color: var(--text-secondary);
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.02em;
}

.btn-back:hover {
  border-color: var(--amber-dim);
  color: var(--amber);
}

.slide-info {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-style: italic;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

.slide-actions {
  display: flex;
  gap: 0.4rem;
}

.btn-download-small {
  padding: 0.3rem 0.6rem;
  font-size: 0.75rem;
  border: 1px solid var(--mount-border);
  border-radius: var(--radius);
  color: var(--text-dim);
  transition: all var(--transition);
  font-family: var(--font-body);
}

.btn-download-small:hover {
  border-color: var(--amber-dim);
  color: var(--amber);
}

/* Bottom controls — fades in on hover */
.slideshow-controls {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  padding: 0.7rem 1.2rem;
  background: linear-gradient(to top, rgba(12, 11, 15, 0.85) 0%, transparent 100%);
  z-index: 10;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.slideshow-page:hover .slideshow-controls {
  opacity: 1;
}

.btn-control {
  background: none;
  border: 1px solid var(--mount-border);
  color: var(--amber);
  font-size: 1.1rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}

.btn-control:hover {
  background: var(--amber-glow-strong);
  border-color: var(--amber-dim);
}

.speed-control {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: var(--text-dim);
  font-style: italic;
}

.speed-control input[type="range"] {
  width: 80px;
  height: 2px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--mount-border);
  border-radius: 1px;
  outline: none;
}

.speed-control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--amber);
  cursor: pointer;
  border: none;
}

.speed-control input[type="range"]::-moz-range-thumb {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--amber);
  cursor: pointer;
  border: none;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 600px) {
  .overview-page {
    padding: 1.5rem 1rem 3rem;
  }

  .overview-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
  }

  .overview-header h1 {
    font-size: 1.5rem;
  }

  .tray-card {
    padding: 0.8rem 1rem;
  }

  .tray-letter {
    font-size: 1.5rem;
    width: 2.2rem;
  }

  .tray-summary {
    font-size: 0.82rem;
  }

  .tray-actions {
    opacity: 1;
  }

  .slide-container {
    padding: 3rem 1rem 3rem;
  }

  .nav-arrow {
    opacity: 1;
    padding: 0.8rem 0.5rem;
    font-size: 1rem;
  }

  .slideshow-topbar,
  .slideshow-controls {
    opacity: 1;
  }

  .slideshow-topbar {
    flex-wrap: wrap;
    gap: 0.3rem;
    background: rgba(12, 11, 15, 0.9);
    padding: 0.5rem 0.8rem;
  }

  .slideshow-controls {
    background: rgba(12, 11, 15, 0.9);
  }

  .slide-info {
    order: 3;
    width: 100%;
    text-align: center;
    font-size: 0.75rem;
  }

  .login-box {
    padding: 2rem 1.5rem;
    margin: 0 1rem;
  }

  .login-box h1 {
    font-size: 1.7rem;
  }
}

/* ============================================================
   SCROLLBAR — Thin and warm
   ============================================================ */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-deep);
}

::-webkit-scrollbar-thumb {
  background: var(--mount-border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--amber-dim);
}