/* ============================================================
   PATH2CAMPUS — COUNTDOWN PAGE STYLES
   Style riêng cho trang chủ: banner carousel, hero đếm ngược,
   next-exam card, exam-active banner, schedule list, quote.
   Phụ thuộc: variables.css, base.css, components.css
   ============================================================ */


/* ------------------------------------------------------------
   BANNER CAROUSEL — chỉ ở trang chủ, auto-play + nút bấm tay
   ------------------------------------------------------------ */
.banner {
  position: relative;
  width: 100%;
  aspect-ratio: 21 / 8;
  max-height: 480px;
  overflow: hidden;
  background-color: var(--color-bg-alt);
}

.banner__track {
  position: relative;
  width: 100%;
  height: 100%;
}

.banner__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--transition-slow);
  pointer-events: none;
}

.banner__slide.is-active {
  opacity: 1;
  pointer-events: auto;
}

.banner__slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.banner__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(0, 0, 84, 0.5);
  color: #fff;
  border-radius: 50%;
  transition: background-color var(--transition-fast);
}

.banner__nav:hover {
  background-color: rgba(0, 0, 84, 0.8);
}

.banner__nav--prev { left: var(--space-4); }
.banner__nav--next { right: var(--space-4); }

/* Card nội dung — thanh ngang đè đáy banner, full chiều rộng,
   chữ trái + nút phải (kiểu RMIT), nền tối bán trong suốt */
.banner__card {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 3;
  background-color: rgba(0, 0, 20, 0.55);
  padding: var(--space-6) var(--space-7);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}

.banner__card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: #ffffff;
  line-height: var(--line-height-tight);
  max-width: 640px;
}

@media (max-width: 639px) {
  .banner__card {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--space-5);
    gap: var(--space-3);
  }

  .banner__card-title {
    font-size: var(--font-size-base);
  }

  .banner__card .btn {
    align-self: flex-start;
  }
}

@media (max-width: 639px) {
  .banner {
    aspect-ratio: 4 / 3;
  }

  .banner__nav {
    width: 32px;
    height: 32px;
  }
}


/* ------------------------------------------------------------
   COUNTDOWN HERO
   ------------------------------------------------------------ */
.countdown-hero {
  padding-block: var(--space-8) var(--space-6);
}

.countdown-hero__title {
  margin-top: var(--space-4);
  font-size: var(--font-size-2xl);
  color: var(--color-navy);
}

.countdown-hero__title span {
  color: var(--color-crimson);
}


/* ------------------------------------------------------------
   NEXT EXAM CARD — trạng thái "upcoming"
   ------------------------------------------------------------ */
.next-exam-card {
  margin: var(--space-6) auto 0;
  max-width: 480px;
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-none);
  padding: var(--space-5) var(--space-6);
}

.next-exam-card__label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.next-exam-card__subject {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-navy);
  margin-bottom: var(--space-1);
}

.next-exam-card__date {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.time-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
}

.time-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-family: var(--font-family-mono);
  background-color: var(--color-info-tint);
  color: var(--color-action-blue-dark);
  border-radius: var(--radius-signature);
}

.time-pill--start {
  background-color: var(--color-navy-tint-90);
  color: var(--color-navy);
}

.time-pill--duration {
  background-color: var(--color-crimson-tint);
  color: var(--color-crimson-dark);
}


/* ------------------------------------------------------------
   EXAM ACTIVE BANNER — trạng thái "distributing" / "active"
   Ẩn mặc định, hiện bằng JS khi vào đúng trạng thái
   ------------------------------------------------------------ */
.exam-active-banner {
  display: none; /* countdown.js sẽ set display:block khi cần */
  margin: var(--space-6) auto 0;
  max-width: 480px;
  background-color: var(--color-navy);
  color: var(--color-text-on-navy);
  border-radius: var(--radius-none);
  padding: var(--space-6);
  text-align: center;
}

.exam-active-banner__icon {
  font-size: var(--font-size-2xl);
  display: block;
  margin-bottom: var(--space-2);
}

.exam-active-banner h2 {
  color: var(--color-text-on-navy);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
}

.exam-active-banner p {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-4);
}

.progress-bar {
  width: 100%;
  height: 6px;
  background-color: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-signature);
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  background-color: var(--color-crimson);
  transition: width 1s linear;
}


/* ------------------------------------------------------------
   COUNTDOWN NUMBERS
   ------------------------------------------------------------ */
.countdown-label {
  margin: var(--space-6) 0 var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.countdown-grid {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.countdown-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  min-width: 76px;
  padding: var(--space-4) var(--space-3);
  background-color: var(--color-navy);
  border-radius: var(--radius-sm);
}

.countdown-box__num {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-on-navy);
  font-variant-numeric: tabular-nums;
}

.countdown-box__unit {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Hiệu ứng nhấp nháy nhẹ khi số đổi — thay cho "flip" phức tạp,
   nhẹ nhàng hơn, không gây khó chịu cho người nhạy cảm chuyển động */
.countdown-box__num.is-updated {
  animation: countdown-pulse 0.4s ease;
}

@keyframes countdown-pulse {
  0%   { opacity: 1; }
  40%  { opacity: 0.4; }
  100% { opacity: 1; }
}

@media (max-width: 639px) {
  .countdown-box {
    min-width: 64px;
    padding: var(--space-3) var(--space-2);
  }

  .countdown-box__num {
    font-size: var(--font-size-xl);
  }
}


/* ------------------------------------------------------------
   QUOTE CARD
   ------------------------------------------------------------ */
.quote-card {
  max-width: 640px;
  margin-inline: auto;
  text-align: center;
  position: relative;
  padding: var(--space-4) var(--space-5);
}

.quote-card__mark {
  font-family: Georgia, serif;
  font-size: var(--font-size-3xl);
  color: var(--color-crimson);
  opacity: 0.3;
  line-height: 1;
  display: block;
  margin-bottom: var(--space-2);
}

.quote-card__text {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-navy);
  line-height: var(--line-height-loose);
  margin-bottom: var(--space-3);
}

.quote-card__author {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
}

.quote-card__author-sub {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-style: italic;
  margin-top: var(--space-1);
}

.quote-dots {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.quote-dots .quote-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-border);
  cursor: pointer;
  transition: background-color var(--transition-fast), width var(--transition-fast);
}

.quote-dots .quote-dot.active {
  background-color: var(--color-crimson);
  width: 18px;
  border-radius: var(--radius-signature);
}


/* ------------------------------------------------------------
   SCHEDULE SECTION — renderSchedule() sinh ra .schedule-item
   ------------------------------------------------------------ */
.schedule-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.schedule-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-3);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.schedule-item.current {
  border-left-color: var(--color-crimson);
  background-color: var(--color-crimson-tint);
}

.schedule-item.past {
  opacity: 0.55;
}

.item-icon {
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

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

.item-subject {
  font-weight: var(--font-weight-semibold);
  color: var(--color-navy);
  margin-bottom: var(--space-1);
}

.item-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.meta-sep {
  opacity: 0.5;
}

.item-status {
  flex-shrink: 0;
}

.status-badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-signature);
}

.status-badge.done {
  background-color: var(--color-bg-muted);
  color: var(--color-text-muted);
}

.status-badge.active {
  background-color: var(--color-crimson);
  color: #fff;
}

.status-badge.next {
  background-color: var(--color-navy);
  color: #fff;
}

.status-badge.upcoming {
  background-color: var(--color-navy-tint-90);
  color: var(--color-navy);
}

@media (max-width: 639px) {
  .schedule-item {
    flex-wrap: wrap;
  }

  .item-status {
    width: 100%;
  }
}