/* ============================================================
   UDRU Satit Student Service System — Main CSS
   Mobile-First · Glassmorphism · Navy & Gold
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Sarabun:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

/* ── CSS Variables ── */
:root {
  --navy:        #0d1b4b;
  --navy-dark:   #081235;
  --navy-light:  #1a2e6e;
  --gold:        #f5a623;
  --gold-light:  #ffd06b;
  --gold-dark:   #d4851a;
  --accent:      #4fc3f7;
  --success:     #2ecc71;
  --danger:      #e74c3c;
  --warning:     #f39c12;
  --info:        #3498db;
  --white:       #ffffff;
  --gray-50:     #f8fafc;
  --gray-100:    #f1f5f9;
  --gray-200:    #e2e8f0;
  --gray-300:    #cbd5e1;
  --gray-400:    #94a3b8;
  --gray-500:    #64748b;
  --gray-600:    #475569;
  --gray-700:    #334155;
  --gray-800:    #1e293b;
  --gray-900:    #0f172a;

  --font-th:     'Sarabun', sans-serif;
  --font-en:     'Inter', sans-serif;

  --radius-sm:   8px;
  --radius-md:   14px;
  --radius-lg:   20px;
  --radius-xl:   28px;
  --radius-full: 9999px;

  --shadow-sm:   0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.08);
  --shadow-md:   0 4px 16px rgba(0,0,0,.15), 0 2px 6px rgba(0,0,0,.10);
  --shadow-lg:   0 10px 40px rgba(0,0,0,.20), 0 4px 12px rgba(0,0,0,.12);
  --shadow-xl:   0 20px 60px rgba(0,0,0,.25);
  --shadow-gold: 0 0 30px rgba(245,166,35,.35);
  --shadow-navy: 0 4px 20px rgba(13,27,75,.40);

  --transition:  all .25s cubic-bezier(.4,0,.2,1);
  --transition-slow: all .4s cubic-bezier(.4,0,.2,1);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-tap-highlight-color: transparent; }
body {
  font-family: var(--font-th);
  background: var(--gray-50);
  color: var(--gray-800);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100dvh;
}
img { max-width: 100%; display: block; }
a  { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: var(--font-th); }
input, select, textarea { font-family: var(--font-th); }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--gray-100); }
::-webkit-scrollbar-thumb { background: var(--navy-light); border-radius: 3px; }

/* ================================================================
   LOGIN PAGE
   ================================================================ */
.login-page {
  min-height: 100dvh;
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 40%, var(--navy-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  position: relative;
  overflow: hidden;
}
.login-page::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(245,166,35,.18) 0%, transparent 70%);
  border-radius: 50%;
  animation: pulse-bg 6s ease-in-out infinite;
}
.login-page::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(79,195,247,.12) 0%, transparent 70%);
  border-radius: 50%;
  animation: pulse-bg 8s ease-in-out infinite reverse;
}
@keyframes pulse-bg {
  0%,100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(1.1); opacity: .7; }
}

.login-card {
  background: rgba(255,255,255,.07);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-xl);
  position: relative;
  z-index: 1;
  animation: slideUp .5s ease-out;
}
@keyframes slideUp {
  from { opacity:0; transform: translateY(30px); }
  to   { opacity:1; transform: translateY(0); }
}

.login-logo {
  width: 90px;
  height: 90px;
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-dark) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  box-shadow: var(--shadow-gold);
  font-size: 40px;
  animation: float 3s ease-in-out infinite;
}
@keyframes float {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}

.login-school {
  text-align: center;
  color: var(--white);
  margin-bottom: 32px;
}
.login-school h1 {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 4px;
}
.login-school p {
  font-size: .85rem;
  color: rgba(255,255,255,.65);
  font-weight: 300;
}

.form-group { margin-bottom: 18px; }
.form-label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  color: rgba(255,255,255,.8);
  margin-bottom: 8px;
}
.form-control {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255,255,255,.1);
  border: 1.5px solid rgba(255,255,255,.2);
  border-radius: var(--radius-md);
  color: var(--white);
  font-size: 1rem;
  font-family: var(--font-th);
  transition: var(--transition);
  outline: none;
}
.form-control::placeholder { color: rgba(255,255,255,.4); }
.form-control:focus {
  border-color: var(--gold);
  background: rgba(255,255,255,.15);
  box-shadow: 0 0 0 3px rgba(245,166,35,.2);
}

.input-icon-wrap {
  position: relative;
}
.input-icon-wrap .form-control { padding-left: 44px; }
.input-icon-wrap .icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
  color: rgba(255,255,255,.5);
}

.btn-login {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-dark) 100%);
  color: var(--navy-dark);
  font-size: 1.05rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-gold);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  margin-top: 8px;
}
.btn-login:hover  { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(245,166,35,.5); }
.btn-login:active { transform: translateY(0); }
.btn-login.loading::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.3), transparent);
  animation: shimmer 1.2s infinite;
}
@keyframes shimmer {
  from { transform: translateX(-100%); }
  to   { transform: translateX(100%); }
}

.login-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 24px 0 20px;
  color: rgba(255,255,255,.4);
  font-size: .8rem;
}
.login-divider::before, .login-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(255,255,255,.2);
}

.biometric-btn {
  width: 100%;
  padding: 14px;
  background: rgba(255,255,255,.08);
  border: 1.5px solid rgba(255,255,255,.2);
  border-radius: var(--radius-md);
  color: var(--white);
  font-size: .95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: var(--transition);
}
.biometric-btn:hover {
  background: rgba(255,255,255,.15);
  border-color: var(--accent);
}

.alert-box {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: .88rem;
  margin-bottom: 16px;
  display: none;
}
.alert-box.error   { background: rgba(231,76,60,.2); border: 1px solid rgba(231,76,60,.4); color: #ff9999; }
.alert-box.success { background: rgba(46,204,113,.2); border: 1px solid rgba(46,204,113,.4); color: #80ff9a; }
.alert-box.show    { display: flex; align-items: center; gap: 8px; }

/* ================================================================
   ADMIN LAYOUT
   ================================================================ */
.admin-wrapper {
  display: flex;
  min-height: 100dvh;
}

/* Sidebar */
.admin-sidebar {
  width: 260px;
  background: linear-gradient(180deg, var(--navy-dark) 0%, var(--navy) 100%);
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  z-index: 100;
  display: flex;
  flex-direction: column;
  transition: var(--transition-slow);
  box-shadow: 4px 0 20px rgba(0,0,0,.3);
}
.sidebar-brand {
  padding: 24px 20px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  display: flex;
  align-items: center;
  gap: 14px;
}
.sidebar-brand .logo {
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
  box-shadow: var(--shadow-gold);
}
.sidebar-brand h2 {
  font-size: .82rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.3;
}
.sidebar-brand span {
  font-size: .7rem;
  color: var(--gold);
  font-weight: 400;
}

.sidebar-nav { flex: 1; padding: 12px 0; overflow-y: auto; }
.nav-section {
  padding: 8px 20px 4px;
  font-size: .7rem;
  font-weight: 700;
  color: rgba(255,255,255,.35);
  text-transform: uppercase;
  letter-spacing: .08em;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  color: rgba(255,255,255,.7);
  font-size: .92rem;
  font-weight: 500;
  transition: var(--transition);
  border-left: 3px solid transparent;
  cursor: pointer;
  position: relative;
}
.nav-item:hover {
  color: var(--white);
  background: rgba(255,255,255,.07);
}
.nav-item.active {
  color: var(--gold);
  background: rgba(245,166,35,.1);
  border-left-color: var(--gold);
}
.nav-item .icon { font-size: 1.15rem; width: 22px; text-align: center; }
.nav-badge {
  margin-left: auto;
  background: var(--danger);
  color: #fff;
  font-size: .65rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-full);
}

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,.08);
}
.admin-user-info {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,.06);
}
.admin-avatar {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.admin-user-info .name { font-size: .85rem; font-weight: 600; color: var(--white); }
.admin-user-info .role { font-size: .72rem; color: var(--gold); }
.logout-btn {
  margin-left: auto;
  color: rgba(255,255,255,.5);
  font-size: 1rem;
  transition: var(--transition);
  padding: 4px;
}
.logout-btn:hover { color: var(--danger); }

/* Admin Main Content */
.admin-main {
  margin-left: 260px;
  flex: 1;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}
.admin-topbar {
  height: 64px;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-sm);
}
.topbar-toggle {
  display: none;
  font-size: 1.3rem;
  color: var(--gray-600);
}
.topbar-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-800);
  flex: 1;
}
.topbar-time {
  font-size: .82rem;
  color: var(--gray-500);
  font-family: var(--font-en);
}

.admin-content {
  flex: 1;
  padding: 24px;
  background: var(--gray-50);
}

/* ── Dashboard Stats Cards ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.stat-card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  transform: translate(20px, -20px);
  opacity: .08;
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.stat-card.navy  { border-top: 3px solid var(--navy); }
.stat-card.navy::after  { background: var(--navy); }
.stat-card.gold  { border-top: 3px solid var(--gold); }
.stat-card.gold::after  { background: var(--gold); }
.stat-card.green { border-top: 3px solid var(--success); }
.stat-card.green::after { background: var(--success); }
.stat-card.red   { border-top: 3px solid var(--danger); }
.stat-card.red::after   { background: var(--danger); }

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 14px;
}
.stat-card.navy  .stat-icon { background: rgba(13,27,75,.1);  color: var(--navy); }
.stat-card.gold  .stat-icon { background: rgba(245,166,35,.1); color: var(--gold-dark); }
.stat-card.green .stat-icon { background: rgba(46,204,113,.1); color: var(--success); }
.stat-card.red   .stat-icon { background: rgba(231,76,60,.1);  color: var(--danger); }

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--gray-800);
  font-family: var(--font-en);
  line-height: 1;
  margin-bottom: 4px;
}
.stat-label { font-size: .82rem; color: var(--gray-500); font-weight: 500; }

/* ── Charts Grid ── */
.charts-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
.chart-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.card-title {
  font-size: .95rem;
  font-weight: 700;
  color: var(--gray-800);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── Data Table ── */
.data-table-wrap {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  overflow: hidden;
}
.data-table-header {
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--gray-100);
  background: var(--white);
}
.data-table {
  width: 100%;
  border-collapse: collapse;
}
.data-table th {
  padding: 12px 16px;
  font-size: .78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--gray-500);
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  text-align: left;
  white-space: nowrap;
}
.data-table td {
  padding: 13px 16px;
  font-size: .88rem;
  color: var(--gray-700);
  border-bottom: 1px solid var(--gray-100);
  vertical-align: middle;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--gray-50); }

/* ── Badges / Status Pills ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: .75rem;
  font-weight: 600;
}
.badge-success { background: rgba(46,204,113,.15);  color: #16a34a; }
.badge-danger  { background: rgba(231,76,60,.15);   color: #dc2626; }
.badge-warning { background: rgba(243,156,18,.15);  color: #d97706; }
.badge-info    { background: rgba(52,152,219,.15);  color: #0369a1; }
.badge-navy    { background: rgba(13,27,75,.1);     color: var(--navy); }
.badge-gold    { background: rgba(245,166,35,.15);  color: var(--gold-dark); }

/* ── Action Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: .88rem;
  font-weight: 600;
  font-family: var(--font-th);
  transition: var(--transition);
  cursor: pointer;
  border: none;
  text-decoration: none;
}
.btn-primary   { background: var(--navy); color: var(--white); }
.btn-primary:hover   { background: var(--navy-light); transform: translateY(-1px); }
.btn-gold      { background: linear-gradient(135deg, var(--gold), var(--gold-dark)); color: var(--navy-dark); }
.btn-gold:hover      { box-shadow: var(--shadow-gold); transform: translateY(-1px); }
.btn-success   { background: var(--success); color: var(--white); }
.btn-danger    { background: var(--danger); color: var(--white); }
.btn-outline   { background: transparent; border: 1.5px solid var(--gray-300); color: var(--gray-700); }
.btn-outline:hover   { border-color: var(--navy); color: var(--navy); }
.btn-sm        { padding: 5px 10px; font-size: .8rem; }
.btn-lg        { padding: 14px 28px; font-size: 1rem; }
.btn-icon      { width: 34px; height: 34px; padding: 0; justify-content: center; }

/* ── Search / Filter Bar ── */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-100);
  background: var(--gray-50);
}
.filter-bar .form-select,
.filter-bar .form-input {
  padding: 8px 12px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-size: .88rem;
  font-family: var(--font-th);
  color: var(--gray-700);
  background: var(--white);
  outline: none;
  transition: var(--transition);
}
.filter-bar .form-input { min-width: 200px; }
.filter-bar .form-select:focus,
.filter-bar .form-input:focus  { border-color: var(--navy); }

/* ── Student Card (in student list) ── */
.std-avatar {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 700;
  font-size: .85rem;
  flex-shrink: 0;
}

/* ================================================================
   STUDENT LAYOUT
   ================================================================ */
.student-app {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--gray-50);
  position: relative;
}

/* Top Header */
.student-header {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 100%);
  padding: 16px 20px;
  color: var(--white);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-navy);
}
.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header-logo-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.header-logo {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.header-school { font-size: .8rem; font-weight: 600; line-height: 1.2; }
.header-school span { font-size: .68rem; color: var(--gold-light); font-weight: 400; }
.header-notify {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  position: relative;
}
.notify-dot {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  background: var(--danger);
  border-radius: 50%;
  border: 2px solid var(--navy);
  animation: blink 2s infinite;
}
@keyframes blink {
  0%,100% { opacity: 1; }
  50%      { opacity: 0; }
}

/* Student Content */
.student-content {
  flex: 1;
  padding: 16px;
  padding-bottom: 90px;
}

/* Bottom Nav */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 480px;
  background: var(--white);
  border-top: 1px solid var(--gray-200);
  display: flex;
  z-index: 100;
  box-shadow: 0 -4px 20px rgba(0,0,0,.1);
  padding-bottom: env(safe-area-inset-bottom);
}
.nav-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px 4px;
  color: var(--gray-400);
  font-size: .65rem;
  gap: 4px;
  transition: var(--transition);
  position: relative;
}
.nav-btn .nav-icon { font-size: 1.3rem; transition: var(--transition); }
.nav-btn:hover { color: var(--navy); }
.nav-btn.active { color: var(--navy); }
.nav-btn.active .nav-icon { transform: scale(1.15); }
.nav-btn.active::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 3px;
  background: var(--navy);
  border-radius: 0 0 3px 3px;
}
.nav-btn-main {
  flex: none;
  width: 64px;
}
.nav-btn-main-inner {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--white);
  margin-top: -20px;
  box-shadow: var(--shadow-navy);
  transition: var(--transition);
}
.nav-btn-main-inner:hover { transform: scale(1.08); }

/* ================================================================
   DIGITAL CARD
   ================================================================ */
.digital-card-page {
  padding: 16px;
  background: linear-gradient(180deg, #0d1b4b 0%, #1a2e6e 60%, #f5f8ff 100%);
  min-height: 100dvh;
}

.digital-card {
  background: linear-gradient(135deg, #fff 0%, #f0f4ff 100%);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(13,27,75,.5);
  max-width: 340px;
  margin: 0 auto 24px;
  position: relative;
  border: 1px solid rgba(255,255,255,.8);
}
.card-top-band {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 60%, var(--navy-light) 100%);
  padding: 20px 20px 40px;
  position: relative;
  overflow: hidden;
}
.card-top-band::before {
  content: '';
  position: absolute;
  top: -30px;
  right: -30px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: rgba(245,166,35,.15);
}
.card-top-band::after {
  content: '';
  position: absolute;
  bottom: -20px;
  left: -20px;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(255,255,255,.05);
}
.card-school-name {
  color: var(--white);
  font-size: .75rem;
  font-weight: 600;
  text-align: center;
  line-height: 1.4;
  position: relative;
  z-index: 1;
}
.card-school-name strong {
  display: block;
  font-size: .85rem;
  color: var(--gold-light);
}
.card-logo {
  position: absolute;
  top: 14px;
  right: 16px;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.card-body {
  padding: 10px 20px 20px;
  margin-top: -30px;
  position: relative;
  z-index: 1;
}
.student-photo-wrap {
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  border-radius: 50%;
  border: 4px solid var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: var(--white);
  box-shadow: var(--shadow-md);
  margin: 0 auto 12px;
}
.card-std-name {
  text-align: center;
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy-dark);
  margin-bottom: 4px;
}
.card-std-code {
  text-align: center;
  font-size: .82rem;
  color: var(--gray-500);
  font-family: var(--font-en);
  margin-bottom: 4px;
}
.card-class {
  text-align: center;
  font-size: .8rem;
  color: var(--gray-600);
  margin-bottom: 16px;
}
.card-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gray-200), transparent);
  margin: 12px 0;
}
.card-qr-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 12px 0;
}
.card-qr-label {
  font-size: .7rem;
  color: var(--gray-400);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: .05em;
}
#qrCanvas,
#qrContainer {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
/* qrcodejs สร้าง img หรือ table ข้างใน */
#qrContainer img,
#qrContainer table {
  display: block;
  margin: 0 auto;
}
.card-qr-timer {
  margin-top: 10px;
  font-size: .72rem;
  color: var(--gray-400);
  display: flex;
  align-items: center;
  gap: 5px;
}
.card-qr-timer .dot {
  width: 7px;
  height: 7px;
  background: var(--success);
  border-radius: 50%;
  animation: blink 1.5s infinite;
}
.card-footer-band {
  background: linear-gradient(135deg, var(--navy-dark), var(--navy));
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-footer-band span {
  font-size: .72rem;
  color: rgba(255,255,255,.6);
}
.card-status-dot {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: .72rem;
  color: var(--gold-light);
}
.card-status-dot::before {
  content: '';
  width: 7px;
  height: 7px;
  background: var(--success);
  border-radius: 50%;
}

/* ── Greeting Card ── */
.greeting-card {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 60%, var(--navy-light) 100%);
  border-radius: var(--radius-xl);
  padding: 20px;
  color: var(--white);
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-navy);
}
.greeting-card::before {
  content: '';
  position: absolute;
  top: -20px;
  right: -20px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(245,166,35,.15);
}
.greeting-time { font-size: .78rem; color: var(--gold-light); margin-bottom: 4px; }
.greeting-name { font-size: 1.2rem; font-weight: 700; margin-bottom: 2px; }
.greeting-class { font-size: .82rem; color: rgba(255,255,255,.7); }

/* ── Quick Actions Grid ── */
.quick-actions {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}
.quick-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 14px 8px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  transition: var(--transition);
  text-decoration: none;
  color: var(--gray-700);
  text-align: center;
}
.quick-btn:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); color: var(--navy); }
.quick-btn .icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}
.quick-btn.card-btn  .icon { background: rgba(13,27,75,.08);  color: var(--navy); }
.quick-btn.doc-btn   .icon { background: rgba(245,166,35,.12); color: var(--gold-dark); }
.quick-btn.ann-btn   .icon { background: rgba(52,152,219,.1);  color: var(--info); }
.quick-btn.more-btn  .icon { background: rgba(46,204,113,.1);  color: var(--success); }
.quick-btn span { font-size: .72rem; font-weight: 600; line-height: 1.2; }

/* ── Section Title ── */
.section-title {
  font-size: .9rem;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.section-title a { font-size: .78rem; color: var(--navy); font-weight: 500; }

/* ── Announcement List ── */
.ann-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
.ann-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  border-left: 3px solid var(--navy);
  transition: var(--transition);
}
.ann-card:hover { box-shadow: var(--shadow-md); }
.ann-title { font-size: .9rem; font-weight: 600; color: var(--gray-800); margin-bottom: 4px; }
.ann-meta  { font-size: .75rem; color: var(--gray-400); }
.ann-content { font-size: .82rem; color: var(--gray-600); margin-top: 6px; line-height: 1.5; }

/* ── Request Status ── */
.req-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.req-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.req-info { flex: 1; min-width: 0; }
.req-title { font-size: .88rem; font-weight: 600; color: var(--gray-800); }
.req-date  { font-size: .75rem; color: var(--gray-400); }

/* ── Forms ── */
.form-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100);
}
.field-label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
}
.field-input {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-size: .92rem;
  font-family: var(--font-th);
  color: var(--gray-800);
  background: var(--white);
  outline: none;
  transition: var(--transition);
}
.field-input:focus { border-color: var(--navy); box-shadow: 0 0 0 3px rgba(13,27,75,.08); }
.field-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%2364748b'%3E%3Cpath fill-rule='evenodd' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; background-size: 16px; }
.field-textarea { resize: vertical; min-height: 100px; }

/* ── PIN Keypad ── */
.pin-page {
  min-height: 100dvh;
  background: linear-gradient(180deg, var(--navy-dark) 0%, var(--navy) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 30px 20px;
  color: var(--white);
}
.pin-logo {
  width: 70px;
  height: 70px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  margin: 0 auto 20px;
  box-shadow: var(--shadow-gold);
}
.pin-title  { font-size: 1.2rem; font-weight: 700; text-align: center; margin-bottom: 6px; }
.pin-subtitle { font-size: .85rem; color: rgba(255,255,255,.6); text-align: center; margin-bottom: 40px; }
.pin-dots {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-bottom: 40px;
}
.pin-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,.4);
  background: transparent;
  transition: var(--transition);
}
.pin-dot.filled { background: var(--gold); border-color: var(--gold); }
.pin-keypad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  width: 260px;
}
.pin-key {
  height: 70px;
  background: rgba(255,255,255,.08);
  border: 1.5px solid rgba(255,255,255,.12);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white);
  transition: var(--transition);
  -webkit-tap-highlight-color: transparent;
}
.pin-key:hover, .pin-key:active {
  background: rgba(255,255,255,.18);
  transform: scale(.96);
}
.pin-key.del { font-size: 1.1rem; background: rgba(231,76,60,.2); }
.pin-key.empty { background: transparent; border: none; pointer-events: none; }

/* ================================================================
   UTILITIES & MISC
   ================================================================ */
.page-header {
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.page-title-h {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--gray-900);
  display: flex;
  align-items: center;
  gap: 10px;
}
.page-subtitle { font-size: .85rem; color: var(--gray-500); margin-top: 2px; }

.flash-success {
  background: rgba(46,204,113,.1);
  border: 1px solid rgba(46,204,113,.3);
  color: #16a34a;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .9rem;
}
.flash-error {
  background: rgba(231,76,60,.1);
  border: 1px solid rgba(231,76,60,.3);
  color: #dc2626;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .9rem;
}

.text-center  { text-align: center; }
.text-muted   { color: var(--gray-400); }
.text-bold    { font-weight: 700; }
.mt-4  { margin-top: 16px; }
.mb-4  { margin-bottom: 16px; }
.mb-6  { margin-bottom: 24px; }
.p-4   { padding: 16px; }
.gap-2 { gap: 8px; }
.flex  { display: flex; align-items: center; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .stats-grid   { grid-template-columns: repeat(2,1fr); }
  .charts-grid  { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .admin-sidebar { transform: translateX(-100%); }
  .admin-sidebar.open { transform: translateX(0); }
  .admin-main   { margin-left: 0; }
  .topbar-toggle { display: flex; }
  .admin-content { padding: 16px; }
}
@media (max-width: 480px) {
  .stats-grid   { grid-template-columns: repeat(2,1fr); gap: 10px; }
  .quick-actions { grid-template-columns: repeat(4,1fr); gap: 8px; }
}

/* ── Loading Spinner ── */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2.5px solid rgba(255,255,255,.3);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Toast Notifications ── */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.toast {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 280px;
  animation: toastIn .3s ease-out;
  border-left: 4px solid var(--success);
}
.toast.error { border-left-color: var(--danger); }
@keyframes toastIn {
  from { opacity: 0; transform: translateX(100%); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ================================================================
   PWA COMPONENTS
   ================================================================ */

/* ── Install Banner ── */
#pwaInstallBanner {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translate(-50%, 100%);
  width: 100%;
  max-width: 480px;
  z-index: 2000;
  opacity: 0;
  transition: transform .4s cubic-bezier(.34,1.56,.64,1), opacity .35s ease;
  padding: 0 0 env(safe-area-inset-bottom);
}
.pwa-banner-inner {
  margin: 0 12px 12px;
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: 0 -2px 40px rgba(13,27,75,.18), 0 8px 32px rgba(0,0,0,.12);
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 16px 16px 16px;
  border: 1px solid var(--gray-100);
}
.pwa-banner-icon img {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  object-fit: cover;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}
.pwa-banner-info { flex: 1; min-width: 0; }
.pwa-banner-title {
  font-size: .92rem;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: 2px;
}
.pwa-banner-desc {
  font-size: .75rem;
  color: var(--gray-500);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.pwa-banner-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.pwa-btn-install {
  padding: 9px 18px;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: var(--white);
  border-radius: var(--radius-md);
  font-size: .88rem;
  font-weight: 700;
  font-family: var(--font-th);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.pwa-btn-install:hover { transform: scale(1.04); box-shadow: var(--shadow-navy); }
.pwa-btn-install:active { transform: scale(.97); }
.pwa-btn-dismiss {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--gray-100);
  color: var(--gray-500);
  border: none;
  font-size: .8rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}
.pwa-btn-dismiss:hover { background: var(--gray-200); color: var(--gray-700); }

/* ── Update Banner ── */
#pwaUpdateBanner {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translate(-50%, -100%);
  width: 100%;
  max-width: 480px;
  z-index: 2000;
  opacity: 0;
  transition: transform .4s cubic-bezier(.34,1.56,.64,1), opacity .35s ease;
}
.pwa-update-inner {
  margin: 8px 12px 0;
  background: linear-gradient(135deg, var(--navy-dark), var(--navy));
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  color: var(--white);
  font-size: .88rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
}
.pwa-update-inner span { flex: 1; }
.pwa-btn-update {
  padding: 7px 16px;
  background: var(--gold);
  color: var(--navy-dark);
  border-radius: var(--radius-md);
  font-size: .82rem;
  font-weight: 700;
  font-family: var(--font-th);
  border: none;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
}
.pwa-btn-update:hover { background: var(--gold-light); }
.pwa-btn-dismiss-update {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255,255,255,.15);
  color: var(--white);
  border: none;
  font-size: .75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
}
.pwa-btn-dismiss-update:hover { background: rgba(255,255,255,.25); }

/* ── Network Status Indicator ── */
#pwaNetworkStatus {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9998;
  padding: 10px 20px;
  font-size: .85rem;
  font-weight: 600;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
  animation: slideDownFade .4s ease-out;
  max-width: 480px;
  width: 100%;
}
@keyframes slideDownFade {
  from { opacity: 0; transform: translateX(-50%) translateY(-100%); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}
.pwa-network-online {
  background: var(--success);
  color: var(--white);
}
.pwa-network-offline {
  background: linear-gradient(135deg, #c0392b, var(--danger));
  color: var(--white);
}

/* ── iOS Install Guide ── */
#pwaIOSGuide .ios-guide-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 3000;
  display: flex;
  align-items: flex-end;
  padding: 20px;
  opacity: 0;
  transition: opacity .3s ease;
}
#pwaIOSGuide .ios-guide-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 28px 24px 32px;
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  position: relative;
  box-shadow: var(--shadow-xl);
  animation: slideUp .4s ease-out;
}
.ios-guide-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 30px;
  height: 30px;
  background: var(--gray-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: .8rem;
  color: var(--gray-500);
  transition: var(--transition);
}
.ios-guide-close:hover { background: var(--gray-200); }
.ios-guide-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: 20px;
}
.ios-guide-steps {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 20px;
}
.ios-step {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: .92rem;
  color: var(--gray-700);
}
.ios-step-num {
  width: 28px;
  height: 28px;
  background: var(--navy);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  font-weight: 700;
  flex-shrink: 0;
}
.ios-guide-arrow {
  text-align: center;
  font-size: 1.5rem;
  color: var(--navy);
  animation: bounce 1.5s ease-in-out infinite;
}
@keyframes bounce {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(6px); }
}

/* ── PWA Splash / Safe Area ── */
@supports (padding-top: env(safe-area-inset-top)) {
  .student-header {
    padding-top: calc(16px + env(safe-area-inset-top));
  }
  .bottom-nav {
    padding-bottom: env(safe-area-inset-bottom);
  }
}

/* ── Installed PWA (standalone mode) ── */
@media (display-mode: standalone) {
  .student-header {
    padding-top: calc(16px + env(safe-area-inset-top));
  }
  /* ซ่อนส่วนที่ไม่จำเป็นในโหมด standalone */
  .bottom-nav {
    padding-bottom: max(env(safe-area-inset-bottom), 8px);
  }
}