/* Components — cards, buttons, spinner, modal, hero */

/* ── Buttons ── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: var(--border-radius);
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-accent-bright);
  box-shadow: var(--shadow-glow);
}

.btn--ghost {
  border: 1px solid var(--color-border-bright);
  color: var(--color-text-muted);
}

.btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-glow);
}

.btn--icon {
  width: 40px;
  height: 40px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--color-border-bright);
  color: var(--color-text-muted);
}

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

/* ── Hero (Today's Picture) ── */

.hero {
  position: relative;
  width: 100%;
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity var(--duration-reveal) var(--ease-out);
}

.hero__media img.loaded {
  opacity: 1;
}

.hero__media iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* Cinematic gradient overlay */
.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(to top,
      var(--color-void) 0%,
      rgba(8, 9, 13, 0.8) 25%,
      rgba(8, 9, 13, 0.2) 50%,
      rgba(8, 9, 13, 0.1) 70%,
      rgba(8, 9, 13, 0.3) 100%
    );
}

[data-theme="light"] .hero__overlay {
  background:
    linear-gradient(to top,
      var(--color-void) 0%,
      rgba(245, 243, 240, 0.85) 25%,
      rgba(245, 243, 240, 0.1) 50%,
      transparent 70%,
      rgba(245, 243, 240, 0.2) 100%
    );
}

.hero__content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-lg);
}

.hero__date {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.3s forwards;
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
  max-width: 700px;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.5s forwards;
}

.hero__explanation {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  line-height: 1.7;
  color: var(--color-text-muted);
  max-width: 600px;
  margin-bottom: var(--space-xl);
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.7s forwards;
  /* Clamp to ~4 lines */
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.hero__meta {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) 0.9s forwards;
}

.hero__copyright {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
}

.hero__copyright span {
  color: var(--color-text-muted);
}

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

@media (max-width: 768px) {
  .hero__title {
    font-size: var(--text-3xl);
  }
  .hero__explanation {
    font-size: var(--text-base);
  }
}

/* ── Archive Cards ── */

.card {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: transform var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-bright);
  box-shadow: var(--shadow-lg);
}

.card__image-wrap {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-deep);
}

.card__image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.card:hover .card__image-wrap img {
  transform: scale(1.05);
}

/* Video play icon overlay */
.card__play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  transition: background var(--duration-normal) var(--ease-out);
}

.card:hover .card__play {
  background: rgba(0, 0, 0, 0.15);
}

.card__play-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--duration-normal) var(--ease-out);
}

.card:hover .card__play-icon {
  transform: scale(1.1);
}

.card__play-icon::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 8px 0 8px 14px;
  border-color: transparent transparent transparent #1a1a1a;
  margin-left: 3px;
}

.card__body {
  padding: var(--space-md);
}

.card__date {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-xs);
}

.card__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── Month Navigator ── */

.month-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  padding: var(--space-xl) 0;
}

.month-nav__label {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  min-width: 220px;
  text-align: center;
}

/* ── Loading Spinner ── */

.spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  padding: var(--space-4xl) 0;
}

.spinner__ring {
  width: 40px;
  height: 40px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner__text {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
}

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

/* Hero spinner - centered in viewport */
.spinner--hero {
  min-height: calc(100vh - var(--nav-height));
}

/* ── Error State ── */

.error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-4xl) var(--space-lg);
  text-align: center;
}

.error--hero {
  min-height: calc(100vh - var(--nav-height));
}

.error__icon {
  font-size: var(--text-4xl);
  opacity: 0.5;
}

.error__message {
  font-size: var(--text-lg);
  color: var(--color-error);
  max-width: 400px;
}

.error__hint {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
}

/* ── Modal (Full-screen HD viewer) ── */

.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.95);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-normal) var(--ease-out),
              visibility var(--duration-normal) var(--ease-out);
}

.modal--open {
  opacity: 1;
  visibility: visible;
}

.modal__content {
  position: relative;
  max-width: 95vw;
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal__content img {
  max-width: 95vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--border-radius);
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease-out);
}

.modal__content img.loaded {
  opacity: 1;
}

.modal__content iframe {
  width: 90vw;
  height: 50.625vw; /* 16:9 */
  max-height: 80vh;
  max-width: calc(80vh * 16 / 9);
  border: none;
  border-radius: var(--border-radius);
}

.modal__close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  z-index: 1001;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: var(--text-xl);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background var(--duration-fast) var(--ease-out);
  cursor: pointer;
  border: none;
}

.modal__close:hover {
  background: rgba(255, 255, 255, 0.2);
}

.modal__info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-2xl) var(--space-xl);
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 100%);
}

.modal__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: #fff;
  margin-bottom: var(--space-xs);
}

.modal__date {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
}

.modal__spinner {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* Modal navigation arrows */
.modal__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: var(--text-xl);
  cursor: pointer;
  border: none;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background var(--duration-fast) var(--ease-out);
  z-index: 1001;
}

.modal__nav:hover {
  background: rgba(255, 255, 255, 0.15);
}

.modal__nav--prev {
  left: var(--space-lg);
}

.modal__nav--next {
  right: var(--space-lg);
}

@media (max-width: 768px) {
  .modal__nav {
    display: none;
  }
}

/* ── Theme Toggle ── */

.theme-toggle {
  position: relative;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--color-border-bright);
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.theme-toggle:hover {
  border-color: var(--color-warm);
  color: var(--color-warm);
  background: var(--color-warm-glow);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

/* ── Surprise Button ── */

.surprise-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.02em;
  border: 1px solid var(--color-warm);
  color: var(--color-warm);
  border-radius: var(--border-radius);
  background: var(--color-warm-glow);
  transition: all var(--duration-normal) var(--ease-out);
}

.surprise-btn:hover {
  background: var(--color-warm);
  color: var(--color-void);
  box-shadow: 0 0 24px rgba(240, 200, 80, 0.2);
}

/* ── About Page ── */

.about {
  max-width: 680px;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-lg);
}

.about h1 {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-xl);
}

.about h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.about p {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  line-height: 1.8;
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
}

.about a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--duration-fast) var(--ease-out);
}

.about a:hover {
  color: var(--color-accent-bright);
}

.about code {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  background: var(--color-surface-raised);
  padding: 2px 6px;
  border-radius: 4px;
}

/* ── Placeholder / Empty ── */

.placeholder-img {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-deep);
  color: var(--color-text-faint);
  font-size: var(--text-sm);
}

/* ── Page header (archive, about) ── */

.page-header {
  text-align: center;
  padding: var(--space-3xl) var(--space-lg) var(--space-xl);
}

.page-header__title {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-sm);
}

.page-header__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .page-header__title {
    font-size: var(--text-3xl);
  }
}