:root {
  --bg: #0b1020;
  --bg-accent: #151a30;
  --card: #1f2540;
  --accent: #f2c94c;
  --accent-soft: rgba(242, 201, 76, 0.2);
  --text: #f9fafb;
  --muted: #9ca3af;
  --danger: #f97373;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.45);
  --transition-fast: 0.18s ease-out;
  --transition-med: 0.25s ease;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: radial-gradient(circle at top, #1f2937 0, #020617 55%, #020617 100%);
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Header */

.page-header {
  text-align: center;
  padding: 2rem 1.5rem 1rem;
}

.page-header h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  letter-spacing: 0.03em;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Layout */

.main {
  width: 100%;
  max-width: 900px;
  padding: 0 1.5rem 2.5rem;
}

.calendar {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

@media (min-width: 768px) {
  .calendar {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}

/* Doors */

.door {
  position: relative;
  background: linear-gradient(
    145deg,
    rgba(15, 23, 42, 0.9),
    rgba(17, 24, 39, 0.95)
  );
  border-radius: var(--radius-xl);
  padding: 0.35rem;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.door-front {
  all: unset;
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 3 / 4;
  border-radius: calc(var(--radius-xl) - 0.25rem);
  background: radial-gradient(circle at top left, #f97316, #b91c1c);
  cursor: pointer;
  transform-origin: left;
  transform-style: preserve-3d;
  transition: transform var(--transition-med), box-shadow var(--transition-med),
    opacity var(--transition-med), filter var(--transition-med);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.door-front::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid rgba(248, 250, 252, 0.2);
  pointer-events: none;
}

/* Nummer på luckan */

.door-number {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.6rem;
  color: #fefce8;
  text-shadow: 0 4px 12px rgba(0, 0, 0, 0.65);
}

/* Inre innehåll (visas i overlay, men även här för framtida varianter) */

.door-content {
  display: none;
}

/* Tillstånd: låst, upplåst, öppnad */

.door.locked .door-front {
  cursor: default;
  opacity: 0.5;
  filter: grayscale(0.4);
}

.door.locked .door-front::after {
  content: "🔒";
  position: absolute;
  top: 0.4rem;
  right: 0.5rem;
  font-size: 1.1rem;
}

.door.available .door-front {
  box-shadow: inset 0 0 0 2px var(--accent-soft), var(--shadow-soft);
}

.door.available .door-front::after {
  content: "✨";
  position: absolute;
  top: 0.45rem;
  right: 0.6rem;
  font-size: 1rem;
}


/* Hover-effekter (bara för upplåsta) */

.door.available .door-front:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.6);
}

/* Info-text */

.info-text {
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
}

/* Overlay / modal */

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(3, 7, 18, 0.82);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  z-index: 50;
}

.overlay.hidden {
  display: none;
}

.overlay-inner {
  position: relative;
  max-width: 480px;
  width: 100%;
  background: linear-gradient(
    145deg,
    rgba(15, 23, 42, 0.98),
    rgba(15, 23, 42, 0.97)
  );
  border-radius: 1.5rem;
  padding: 1.75rem 1.5rem 1.5rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.4);
}

.overlay-close {
  all: unset;
  position: absolute;
  top: 0.85rem;
  right: 1rem;
  font-size: 1.6rem;
  cursor: pointer;
  color: var(--muted);
  line-height: 1;
}

.overlay-close:hover {
  color: var(--accent);
}

.overlay-content h2 {
  margin-top: 0.3rem;
  margin-bottom: 0.5rem;
  font-size: 1.4rem;
}

.overlay-content p {
  margin: 0.25rem 0;
  line-height: 1.5;
  font-size: 0.98rem;
}
/* Öppnad lucka – siffran blir lite svagare, liten "öppen"-indikator */

.door.open .door-front {
  /* Behåll öppningseffekten men gör så att kortet fortfarande känns klickbart */
  cursor: pointer;
}

.door.open .door-number {
  opacity: 0.4;
}

.door.open::after {
  content: "Öppen";
  position: absolute;
  bottom: 0.4rem;
  left: 0.6rem;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0.9;
}
.advent-link-btn {
  display: inline-block;
  padding: 0.75rem 1.25rem;
  background: var(--accent);
  color: #1a1a1a;
  text-decoration: none;
  font-weight: 600;
  border-radius: 0.8rem;
  font-size: 1rem;
  transition: 0.2s ease;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.advent-link-btn:hover {
  background: #ffd76a;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.3);
}

.advent-link-btn:active {
  transform: translateY(0);
  box-shadow: 0 3px 8px rgba(0,0,0,0.2);
}
/* ============================= */
/* Snöfall                       */
/* ============================= */

.snow-container {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 5; /* Under overlay, över bakgrund */
}

.snowflake {
  position: absolute;
  top: -10px;
  font-size: 0.6rem;
  color: #ffffff;
  opacity: 0.85;
  animation-name: snowFall;
  animation-timing-function: linear;
  animation-iteration-count: 1;
}

@keyframes snowFall {
  0% {
    transform: translate3d(0, -10px, 0);
    opacity: 0;
  }
  10% {
    opacity: 0.9;
  }
  100% {
    transform: translate3d(20px, 110vh, 0);
    opacity: 0;
  }
}
/* ============================= */
/* Glöd kring öppnade luckor     */
/* ============================= */

.door.open .door-front {
  /* Ta bort ev. hård rotation om du vill att luckan ska ligga “öppen” men synlig */
  /* Om du fortfarande har rotateY där uppe, detta kommer att ersätta den */
  transform: none;
  opacity: 0.95;
  filter: saturate(1.1);
  box-shadow:
    0 0 18px rgba(242, 201, 76, 0.55),
    0 0 32px rgba(250, 204, 21, 0.35),
    inset 0 0 0 2px rgba(250, 250, 250, 0.08);
  position: relative;
}

.door.open .door-number {
  opacity: 0.6;
}

.door.open::after {
  content: "Öppen";
  position: absolute;
  bottom: 0.35rem;
  left: 0.7rem;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0.95;
}

/* Liten pulserande glöd */
@keyframes doorGlowPulse {
  0% {
    box-shadow:
      0 0 14px rgba(242, 201, 76, 0.3),
      0 0 26px rgba(250, 204, 21, 0.2);
  }
  50% {
    box-shadow:
      0 0 22px rgba(242, 201, 76, 0.7),
      0 0 40px rgba(250, 204, 21, 0.4);
  }
  100% {
    box-shadow:
      0 0 14px rgba(242, 201, 76, 0.3),
      0 0 26px rgba(250, 204, 21, 0.2);
  }
}

.door.open .door-front {
  animation: doorGlowPulse 2.6s ease-in-out infinite;
}
/* ============================= */
/* "Första gången"-effekt        */
/* ============================= */

.door.just-opened .door-front {
  animation: doorFirstOpenPop 0.45s ease-out;
}

.door.just-opened::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 2px solid rgba(250, 250, 210, 0.9);
  box-shadow:
    0 0 18px rgba(250, 250, 210, 0.8),
    0 0 32px rgba(253, 224, 71, 0.6);
  opacity: 0;
  pointer-events: none;
  animation: doorFirstOpenRing 0.6s ease-out;
}

@keyframes doorFirstOpenPop {
  0% {
    transform: scale(0.9);
  }
  60% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes doorFirstOpenRing {
  0% {
    opacity: 0;
    transform: scale(0.7);
  }
  40% {
    opacity: 1;
    transform: scale(1.05);
  }
  100% {
    opacity: 0;
    transform: scale(1.2);
  }
}