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

:root {
  --font-stack: "Söhne", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  --bg-primary: #ffffff;
  --bg-secondary: #f7f7f8;
  --bg-tertiary: #ececf1;
  --text-primary: #202123;
  --text-secondary: #6e6e80;
  --text-tertiary: #8e8ea0;
  --border-color: #e5e5e5;
  --border-hover: #d9d9e3;
  --accent: #10a37f;
  --accent-hover: #0d8c6d;
  --card-radius: 12px;
  --card-bg: #ffffff;
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --card-shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.12);
  --transition-speed: 0.2s;
  --focus-ring: 0 0 0 3px rgba(16, 163, 127, 0.4);
  --selection-bg: rgba(16, 163, 127, 0.15);
}

/* ===== Dark Mode ===== */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --text-primary: #e4e6eb;
    --text-secondary: #b0b3b8;
    --text-tertiary: #8a8d91;
    --border-color: #3a3b3c;
    --border-hover: #4e4f50;
    --accent: #10a37f;
    --accent-hover: #0d8c6d;
    --card-bg: #24243e;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    --card-shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.5);
    --focus-ring: 0 0 0 3px rgba(16, 163, 127, 0.5);
    --selection-bg: rgba(16, 163, 127, 0.25);
  }
}

html,
body {
  height: 100%;
  font-family: var(--font-stack);
  color: var(--text-primary);
  overflow-x: hidden;
  background: var(--bg-primary);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
}

::selection {
  background: var(--selection-bg);
  color: var(--text-primary);
}

/* ===== Accessibility: Focus Visible ===== */
:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 8px;
}

.card:focus-visible {
  border-radius: var(--card-radius);
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .bulletin-list {
    transition: none !important;
  }
}

/* ===== Noise (hidden in clean design) ===== */
body > .noise {
  display: none;
}

/* ===== Header ===== */
header {
  text-align: center;
  padding: 48px 24px 8px;
  position: relative;
  z-index: 1;
}

.greeting {
  font-size: 1.85rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--text-primary);
}

.subtitle {
  margin-top: 8px;
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--text-tertiary);
  letter-spacing: 0;
}

/* ===== Bulletin ===== */
.bulletin {
  max-width: 768px;
  width: 100%;
  margin: 20px auto 0;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.bulletin-inner {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 12px 18px;
  overflow: hidden;
}

.bulletin-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(16, 163, 127, 0.08);
  padding: 4px 10px;
  border-radius: 6px;
  white-space: nowrap;
  flex-shrink: 0;
}

.bulletin-track {
  overflow: hidden;
  flex: 1;
  position: relative;
  font-size: 0.88rem;
}

.bulletin-list {
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.bulletin-item {
  height: 1.6em;
  line-height: 1.6;
  font-size: inherit;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
  gap: 8px;
}

.bulletin-item a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s;
}

.bulletin-item a:hover {
  color: var(--accent);
}

.bulletin-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  opacity: 0.6;
}

/* ===== Main Card Grid ===== */
main {
  flex: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 32px 24px 24px;
  position: relative;
  z-index: 1;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  max-width: 768px;
  width: 100%;
}

/* ===== Card ===== */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  padding: 24px 20px 20px;
  cursor: pointer;
  transition:
    transform var(--transition-speed) ease,
    box-shadow var(--transition-speed) ease,
    border-color var(--transition-speed) ease;
  text-align: left;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 8px;

  opacity: 0;
  transform: translateY(12px);
  animation: cardEnter 0.4s ease forwards;
}

.card:nth-child(1) { animation-delay: 0.05s; }
.card:nth-child(2) { animation-delay: 0.1s; }
.card:nth-child(3) { animation-delay: 0.15s; }
.card:nth-child(4) { animation-delay: 0.2s; }
.card:nth-child(5) { animation-delay: 0.25s; }
.card:nth-child(6) { animation-delay: 0.3s; }
.card:nth-child(7) { animation-delay: 0.35s; }
.card:nth-child(8) { animation-delay: 0.4s; }

@keyframes cardEnter {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--card-shadow-hover);
  border-color: var(--border-hover);
}

.card:active {
  transform: translateY(0) scale(0.99);
}

/* Remove colored accent line */
.card::before {
  display: none;
}

.card-icon {
  font-size: 28px;
  line-height: 1;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--bg-secondary);
  padding: 6px;
  transition: transform var(--transition-speed) ease;
}

.card-icon img {
  width: 28px;
  height: 28px;
  object-fit: contain;
  border-radius: 4px;
}

.card:hover .card-icon {
  transform: scale(1.05);
}

.card-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

.card-desc {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  line-height: 1.5;
}

/* ===== Ad Slot ===== */
.ad-slot {
  max-width: 768px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.ad-inner {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 16px 20px;
  cursor: pointer;
  transition:
    box-shadow var(--transition-speed) ease,
    border-color var(--transition-speed) ease;
  position: relative;
}

.ad-inner:hover {
  box-shadow: var(--card-shadow-hover);
  border-color: var(--border-hover);
}

.ad-inner:active {
  transform: scale(0.99);
}

.ad-badge {
  position: absolute;
  top: 6px;
  right: 8px;
  font-size: 0.65rem;
  color: var(--text-tertiary);
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 500;
}

.ad-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.ad-icon img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.ad-content {
  flex: 1;
  min-width: 0;
}

.ad-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

.ad-desc {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  margin-top: 2px;
}

.ad-cta {
  background: var(--accent);
  color: #ffffff;
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--transition-speed) ease;
  flex-shrink: 0;
}

.ad-cta:hover {
  background: var(--accent-hover);
}

/* ===== Footer ===== */
footer {
  text-align: center;
  padding: 24px 24px 32px;
  position: relative;
  z-index: 1;
}

.clock {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  line-height: 1.6;
}

.clock-time {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}

/* ===== Image Popup ===== */
#imagePopupOverlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: popupFadeIn 0.2s ease;
}

@keyframes popupFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.image-popup-box {
  position: relative;
  background: var(--card-bg);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
  animation: popupScaleIn 0.25s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes popupScaleIn {
  from { transform: scale(0.92); opacity: 0; }
  to   { transform: scale(1);    opacity: 1; }
}

.image-popup-img {
  display: block;
  max-width: 320px;
  max-height: 70vh;
  border-radius: 8px;
}

.image-popup-close {
  position: absolute;
  top: -10px;
  right: -10px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: none;
  background: var(--text-primary);
  color: var(--bg-primary);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.15s;
}

.image-popup-close:hover {
  opacity: 0.8;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  header {
    padding: 36px 20px 6px;
  }

  .greeting {
    font-size: 1.5rem;
  }

  .subtitle {
    font-size: 0.88rem;
  }

  main {
    padding: 24px 16px 16px;
  }

  .card-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .card {
    flex-direction: row;
    align-items: center;
    gap: 14px;
    padding: 16px;
  }

  .card-icon {
    margin-bottom: 0;
    flex-shrink: 0;
  }

  .card-text {
    flex: 1;
    min-width: 0;
  }

  .bulletin {
    padding: 0 16px;
    margin-top: 16px;
  }

  .ad-slot {
    padding: 0 16px;
  }

  .ad-inner {
    flex-wrap: wrap;
    padding: 14px 16px;
  }

  .ad-cta {
    width: 100%;
    text-align: center;
    padding: 10px 0;
  }

  footer {
    padding: 16px 16px 24px;
  }
}

@media (max-width: 360px) {
  .greeting {
    font-size: 1.3rem;
  }

  .card {
    padding: 14px;
  }

  .card-icon {
    width: 36px;
    height: 36px;
  }

  .card-title {
    font-size: 0.9rem;
  }

  .card-desc {
    font-size: 0.78rem;
  }
}

/* ===== Print Styles ===== */
@media print {
  .bulletin,
  .ad-slot,
  footer {
    display: none;
  }

  .card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }
}