/* ============================================================
   PATH2CAMPUS — COMPONENTS
   Button, card, input, badge, bảng điểm — dùng chung mọi trang.
   Phụ thuộc: variables.css, base.css (phải load TRƯỚC file này)
   ============================================================ */


/* ------------------------------------------------------------
   HEADER — top bar (navy, 1 hàng: logo trái + nav chính phải)
   + sub bar (trắng, 2 dropdown căn giữa), cố định
   ------------------------------------------------------------ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  width: 100%;
}

.site-header__topbar {
  height: var(--header-topbar-height);
  background-color: var(--color-navy);
  display: flex;
  align-items: center;
  overflow: visible; /* cho phép logo tràn ra ngoài top bar */
}

.site-header__topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  position: relative;
}

/* Logo — phóng to, tràn xuống dưới mép top bar (giống hiệu ứng RMIT) */
.site-header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  position: relative;
  z-index: 2;
}

.site-header__logo img {
  height: 68px;
  width: auto;
  margin-block: calc((68px - var(--header-topbar-height)) / 2);
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.25));
}

.site-header__brand {
  color: var(--color-text-on-navy);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-md);
  letter-spacing: 0.02em;
}

/* Nav chính — căn phải, chữ trắng trên nền navy */
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  margin-left: auto;
}

.site-nav__link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: rgba(255, 255, 255, 0.85);
  padding-block: var(--space-2);
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.site-nav__link:hover {
  color: #ffffff;
}

.site-nav__link.is-active {
  color: #ffffff;
  border-bottom-color: var(--color-crimson);
}

/* Sub bar — trắng, 2 dropdown căn giữa */
.site-header__subbar {
  height: var(--header-subbar-height);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
}

.site-subnav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-7);
  height: 100%;
}

.site-subnav__trigger {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  height: 100%;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

.site-subnav__trigger:hover {
  color: var(--color-action-blue);
}

.site-subnav__caret {
  transition: transform var(--transition-fast);
}

.dropdown.is-open .site-subnav__trigger {
  color: var(--color-action-blue);
}

.dropdown.is-open .site-subnav__caret {
  transform: rotate(180deg);
}

/* Dropdown panel — full chiều rộng viewport, đè ngay dưới sub bar
   (giống mega-menu RMIT), nội dung căn giữa theo container */
.dropdown {
  position: static;
  height: 100%;
}

.dropdown__panel {
  position: fixed;
  top: var(--header-total-height);
  left: 0;
  width: 100%;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  padding: var(--space-6) var(--container-padding-inline);
  display: none;
  z-index: var(--z-dropdown);
}

.dropdown.is-open .dropdown__panel {
  display: flex;
  justify-content: center;
}

/* Panel dạng lưới ngang 4 cột — dùng cho "Xếp hạng học thuật" */
.dropdown__panel--grid {
  display: none;
}

.dropdown.is-open .dropdown__panel--grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}

.dropdown__item {
  display: block;
  padding: var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  text-align: center;
}

.dropdown__panel--grid .dropdown__item {
  border-left: 1px solid var(--color-border);
}

.dropdown__panel--grid .dropdown__item:first-child {
  border-left: none;
}

.dropdown__item:hover {
  background-color: var(--color-info-tint);
  color: var(--color-action-blue-dark);
}

/* Menu toggle (hamburger) — chỉ hiện trên mobile */
.site-header__menu-toggle {
  display: none;
  color: var(--color-text-on-navy);
  flex-shrink: 0;
  z-index: 2;
}

@media (max-width: 767px) {
  .site-nav,
  .site-header__subbar {
    display: none;
  }

  .site-header__menu-toggle {
    display: flex;
  }

  .site-header__logo img {
    height: 40px;
    margin-block: 0;
  }
}


/* ------------------------------------------------------------
   MOBILE NAV PANEL — trượt từ bên phải, che ~75% màn hình
   ------------------------------------------------------------ */
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 84, 0.5);
  z-index: var(--z-overlay);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.mobile-nav-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 78%;
  max-width: 340px;
  background-color: var(--color-bg);
  z-index: var(--z-modal);
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}

.mobile-nav-panel.is-open {
  transform: translateX(0);
}

.mobile-nav-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav-panel__close {
  color: var(--color-text-secondary);
}

.mobile-nav-panel__nav {
  display: flex;
  flex-direction: column;
  padding: var(--space-3) var(--space-5);
}

.mobile-nav-panel__link {
  padding: var(--space-4) 0;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-navy);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav-panel__divider {
  height: var(--space-3);
}

.mobile-nav-panel__accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-4) 0;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-navy);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav-panel__accordion-trigger.is-open .site-subnav__caret {
  transform: rotate(180deg);
}

.mobile-nav-panel__accordion-body {
  display: none;
  flex-direction: column;
  padding: var(--space-2) 0 var(--space-2) var(--space-4);
  gap: var(--space-1);
}

.mobile-nav-panel__accordion-body.is-open {
  display: flex;
}

.mobile-nav-panel__accordion-body a {
  padding: var(--space-3) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.mobile-nav-panel__accordion-body a:hover {
  color: var(--color-crimson);
}


/* ------------------------------------------------------------
   BUTTON
   ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-signature);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  border: 1px solid transparent;
  transition: background-color var(--transition-fast),
              border-color var(--transition-fast),
              color var(--transition-fast),
              transform var(--transition-fast);
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.98);
}

/* Primary — CTA chính, dùng Crimson */
.btn--primary {
  background-color: var(--color-crimson);
  color: var(--color-text-on-crimson);
}

.btn--primary:hover {
  background-color: var(--color-crimson-dark);
}

/* Secondary — viền navy, nền trắng */
.btn--secondary {
  background-color: var(--color-bg);
  color: var(--color-navy);
  border-color: var(--color-navy);
}

.btn--secondary:hover {
  background-color: var(--color-navy);
  color: var(--color-text-on-navy);
}

/* Ghost — viền nhạt, dùng cho CTA phụ (kiểu pill RMIT "Học bổng", "Nhập học") */
.btn--ghost {
  background-color: transparent;
  color: var(--color-action-blue);
  border-color: var(--color-action-blue);
}

.btn--ghost:hover {
  background-color: var(--color-info-tint);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-xs);
}

.btn--lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-base);
}

.btn--full {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}


/* ------------------------------------------------------------
   INPUT / SEARCH BOX
   ------------------------------------------------------------ */
.input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-signature);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input::placeholder {
  color: var(--color-text-muted);
}

.input:focus {
  outline: none;
  border-color: var(--color-action-blue);
  box-shadow: 0 0 0 3px var(--color-info-tint);
}

/* Search box lớn kiểu RMIT — dùng riêng ở trang tra cứu điểm */
.search-box {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-5);
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-none);
}

.search-box .input {
  flex: 1;
  background-color: var(--color-bg);
}

.search-box .btn {
  flex-shrink: 0;
}

@media (max-width: 639px) {
  .search-box {
    flex-direction: column;
    align-items: stretch;
  }
}


/* ------------------------------------------------------------
   CARD
   ------------------------------------------------------------ */
.card {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-none);
  overflow: hidden;
  transition: box-shadow var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-navy-tint);
}

.card__image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.card__body {
  padding: var(--space-5);
}

.card__title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-navy);
  margin-bottom: var(--space-2);
}

.card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.card__link-list {
  margin-top: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.card__link-list a {
  font-size: var(--font-size-sm);
  color: var(--color-action-blue);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.card__link-list a:hover {
  color: var(--color-action-blue-dark);
  text-decoration: underline;
}

/* Card trường (kết quả tìm kiếm trang tra cứu điểm) */
.school-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.school-card:hover {
  border-color: var(--color-navy);
  box-shadow: var(--shadow-navy-tint);
}

.school-card__logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  flex-shrink: 0;
}

.school-card__name {
  font-weight: var(--font-weight-semibold);
  color: var(--color-navy);
}

.school-card__meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}


/* ------------------------------------------------------------
   BADGE
   ------------------------------------------------------------ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-signature);
}

.badge--crimson {
  background-color: var(--color-crimson-tint);
  color: var(--color-crimson);
}

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

.badge--success {
  background-color: var(--color-success-tint);
  color: var(--color-success);
}

.badge--warning {
  background-color: var(--color-warning-tint);
  color: var(--color-warning);
}

/* Badge "Dự kiến" — dùng cho data điểm chuẩn năm chưa chính thức
   (đã nhắc ở phần review đầu tiên: cần rõ ràng hơn ở từng dòng,
   không chỉ disclaimer cuối trang) */
.badge--du-kien {
  background-color: var(--color-warning-tint);
  color: var(--color-warning);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}


/* ------------------------------------------------------------
   PILL NAV (tab chuyển trang kiểu viên thuốc — kế thừa tinh thần
   bản cũ, dùng nếu cần tab phụ trong 1 trang, không phải nav chính)
   ------------------------------------------------------------ */
.pill-nav {
  display: inline-flex;
  padding: var(--space-1);
  background-color: var(--color-bg-alt);
  border-radius: var(--radius-signature);
  gap: var(--space-1);
}

.pill-nav__item {
  padding: var(--space-2) var(--space-5);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  border-radius: var(--radius-signature);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.pill-nav__item.is-active {
  background-color: var(--color-bg);
  color: var(--color-navy);
  box-shadow: var(--shadow-sm);
}


/* ------------------------------------------------------------
   BẢNG ĐIỂM (score table) — dùng ở trang tra cứu + trang chi tiết trường
   ------------------------------------------------------------ */
.score-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.score-table {
  width: 100%;
  font-size: var(--font-size-sm);
  min-width: 640px;
}

.score-table thead th {
  background-color: var(--color-navy);
  color: var(--color-text-on-navy);
  text-align: left;
  padding: var(--space-3) var(--space-4);
  font-weight: var(--font-weight-semibold);
  white-space: nowrap;
}

.score-table tbody td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-primary);
}

.score-table tbody tr:nth-child(even) {
  background-color: var(--color-bg-muted);
}

.score-table tbody tr:hover {
  background-color: var(--color-info-tint);
}

.score-table td.score-table__major-name {
  font-weight: var(--font-weight-medium);
  color: var(--color-navy);
}

.score-table td.score-table__score {
  font-family: var(--font-family-mono);
  font-weight: var(--font-weight-semibold);
  text-align: right;
}

.score-table td.score-table__note {
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

/* Trạng thái rỗng — không tìm thấy kết quả */
.empty-state {
  text-align: center;
  padding: var(--space-8) var(--space-5);
  color: var(--color-text-muted);
}

.empty-state__icon {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-3);
}

/* Loading state — khi đang fetch data từ Supabase */
.loading-state {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-6);
  color: var(--color-text-muted);
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-navy);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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


/* ------------------------------------------------------------
   FOOTER
   ------------------------------------------------------------ */
.site-footer {
  background-color: var(--color-navy);
  color: var(--color-text-on-navy);
  padding-block: var(--space-7);
  margin-top: var(--space-9);
}

.site-footer a {
  color: var(--color-text-on-navy);
}

.site-footer a:hover {
  text-decoration: underline;
}

.site-footer__bottom {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: var(--font-size-xs);
  opacity: 0.7;
}