/* ============================================================
   ProGuru — Design System & Main Stylesheet
   Program Semester & Tahunan Guru
   ============================================================ */

/* ── CSS Custom Properties ─────────────────────────────────── */
:root {
  /* Brand Colors */
  --clr-primary:       #6366f1;
  --clr-primary-dark:  #4f46e5;
  --clr-primary-light: #818cf8;
  --clr-primary-glow:  rgba(99, 102, 241, 0.25);

  --clr-secondary:     #06b6d4;
  --clr-accent:        #f59e0b;
  --clr-success:       #10b981;
  --clr-danger:        #ef4444;
  --clr-warning:       #f59e0b;
  --clr-info:          #3b82f6;

  /* Background (Light Mode) */
  --bg-base:           #f8fafc;
  --bg-surface:        #ffffff;
  --bg-card:           #ffffff;
  --bg-card-hover:     #f1f5f9;
  --bg-input:          #f8fafc;
  --bg-sidebar:        #ffffff;

  /* Border */
  --border-clr:        #e2e8f0;
  --border-active:     rgba(99, 102, 241, 0.5);

  /* Text */
  --txt-primary:       #0f172a;
  --txt-secondary:     #475569;
  --txt-muted:         #64748b;

  /* Sidebar */
  --sidebar-w:         260px;
  --topbar-h:          64px;

  /* Spacing */
  --space-xs:   4px;
  --space-sm:   8px;
  --space-md:   16px;
  --space-lg:   24px;
  --space-xl:   32px;
  --space-2xl:  48px;

  /* Radius */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  14px;
  --radius-xl:  20px;
  --radius-full: 9999px;

  /* Shadow */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4), 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md:  0 4px 12px rgba(0,0,0,0.5);
  --shadow-lg:  0 10px 30px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 24px rgba(99, 102, 241, 0.3);

  /* Transition */
  --transition: 0.2s ease;
  --transition-slow: 0.4s ease;
}

/* ── Reset & Base ───────────────────────────────────────────── */
*, *::before, *::after {
  margin: 0; padding: 0;
  box-sizing: border-box;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Plus Jakarta Sans', -apple-system, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--txt-primary);
  background: var(--bg-base);
  overflow-x: hidden;
  min-height: 100vh;
}

a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input, select, textarea { font: inherit; }

/* ── Layout ─────────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-clr);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
  overflow-x: hidden;
  transition: transform var(--transition-slow);
}

.main-wrapper {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin var(--transition-slow);
}

/* ── Sidebar Header ─────────────────────────────────────────── */
.sidebar__header {
  padding: var(--space-lg) var(--space-md);
  border-bottom: 1px solid var(--border-clr);
}

.sidebar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.sidebar__logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  flex-shrink: 0;
}
.sidebar__logo-icon svg { width: 18px; height: 18px; }

.sidebar__logo-name {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 18px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sidebar__logo-desc {
  font-size: 10px;
  color: var(--txt-muted);
  margin-top: -2px;
}

/* ── Sidebar User ─────────────────────────────────────────────── */
.sidebar__user {
  padding: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  border-bottom: 1px solid var(--border-clr);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), transparent);
}

.sidebar__user-avatar {
  width: 38px; height: 38px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 16px; color: #fff;
  flex-shrink: 0;
}

.sidebar__user-name {
  font-weight: 600;
  font-size: 13px;
  color: var(--txt-primary);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.sidebar__user-role {
  font-size: 11px;
  color: var(--txt-muted);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* ── Sidebar Nav ──────────────────────────────────────────────── */
.sidebar__nav {
  padding: var(--space-md) var(--space-sm);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.sidebar__nav-group { display: flex; flex-direction: column; gap: 2px; }

.sidebar__nav-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--txt-muted);
  padding: 0 var(--space-sm) var(--space-xs);
}

.sidebar__nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px var(--space-sm);
  border-radius: var(--radius-md);
  color: var(--txt-secondary);
  font-size: 13px;
  font-weight: 500;
  transition: all var(--transition);
  position: relative;
}

.sidebar__nav-link:hover {
  color: var(--txt-primary);
  background: rgba(255, 255, 255, 0.05);
}

.sidebar__nav-link.active {
  color: #fff;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.sidebar__nav-link--danger:hover {
  color: var(--clr-danger);
  background: rgba(239, 68, 68, 0.1);
}

.sidebar__nav-icon {
  width: 18px; height: 18px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.sidebar__nav-icon svg { width: 16px; height: 16px; stroke: currentColor; fill: none; }

/* ── Topbar ───────────────────────────────────────────────────── */
.topbar {
  height: var(--topbar-h);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-clr);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 0 var(--space-xl);
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(12px);
}

.topbar__menu-btn {
  display: none;
  width: 36px; height: 36px;
  border-radius: var(--radius-md);
  align-items: center; justify-content: center;
  color: var(--txt-secondary);
  transition: all var(--transition);
}
.topbar__menu-btn svg { width: 20px; height: 20px; }
.topbar__menu-btn:hover {
  background: rgba(255,255,255,0.07);
  color: var(--txt-primary);
}

.topbar__breadcrumb {
  flex: 1;
  font-size: 13px;
  color: var(--txt-secondary);
}
.topbar__breadcrumb a { color: var(--clr-primary-light); }
.topbar__breadcrumb a:hover { text-decoration: underline; }
.topbar__breadcrumb .sep { margin: 0 6px; opacity: 0.4; }

.topbar__right {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.topbar__tahun-ajaran {
  font-size: 12px;
  font-weight: 600;
  color: var(--clr-primary-light);
  background: rgba(99, 102, 241, 0.12);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(99, 102, 241, 0.25);
}

.topbar__school {
  font-size: 12px;
  color: var(--txt-muted);
  white-space: nowrap;
}

/* ── Main Content ─────────────────────────────────────────────── */
.main-content {
  flex: 1;
  padding: var(--space-xl);
  max-width: 1400px;
  width: 100%;
}

/* ── Page Header ─────────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

.page-header__title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 24px;
  font-weight: 800;
  color: var(--txt-primary);
  line-height: 1.3;
}

.page-header__subtitle {
  font-size: 14px;
  color: var(--txt-secondary);
  margin-top: 4px;
}

.page-header__actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* ── Cards ────────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-clr);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}

.card:hover { border-color: var(--border-active); }

.card__header {
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--border-clr);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.card__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--txt-primary);
}

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

.card__footer {
  padding: var(--space-md) var(--space-xl);
  border-top: 1px solid var(--border-clr);
  background: rgba(0,0,0,0.1);
}

/* ── Stat Cards ──────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-clr);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(255,255,255,0.02));
  pointer-events: none;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: rgba(255,255,255,0.15);
}

.stat-card__icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.stat-card__icon--primary { background: rgba(99, 102, 241, 0.2); color: var(--clr-primary-light); }
.stat-card__icon--success  { background: rgba(16, 185, 129, 0.2); color: #34d399; }
.stat-card__icon--warning  { background: rgba(245, 158, 11, 0.2); color: #fbbf24; }
.stat-card__icon--info     { background: rgba(6, 182, 212, 0.2);  color: #22d3ee; }

.stat-card__value {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 28px;
  font-weight: 800;
  color: var(--txt-primary);
  line-height: 1;
}

.stat-card__label {
  font-size: 12px;
  color: var(--txt-secondary);
  margin-top: 4px;
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  white-space: nowrap;
  text-decoration: none;
  line-height: 1;
}

.btn svg { width: 15px; height: 15px; flex-shrink: 0; }

.btn--primary {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: #fff;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}
.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(99, 102, 241, 0.5);
  filter: brightness(1.1);
}

.btn--secondary {
  background: #f1f5f9;
  color: var(--txt-primary);
  border: 1px solid var(--border-clr);
}
.btn--secondary:hover {
  background: #e2e8f0;
  border-color: #cbd5e1;
}

.btn--success {
  background: linear-gradient(135deg, #059669, #10b981);
  color: #fff;
}
.btn--success:hover { filter: brightness(1.1); transform: translateY(-1px); }

.btn--danger {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.25);
}
.btn--danger:hover {
  background: rgba(239, 68, 68, 0.25);
  color: #fff;
}

.btn--warning {
  background: linear-gradient(135deg, #d97706, #f59e0b);
  color: #fff;
}

.btn--sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn--lg {
  padding: 12px 28px;
  font-size: 15px;
  border-radius: var(--radius-lg);
}

.btn--icon {
  padding: 8px;
  width: 34px; height: 34px;
  justify-content: center;
}

/* ── Table ────────────────────────────────────────────────────── */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-clr);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

thead th {
  background: #f1f5f9;
  color: var(--txt-secondary);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-clr);
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid var(--border-clr);
  transition: background var(--transition);
}
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: #f8fafc; }

tbody td {
  padding: 12px 16px;
  color: var(--txt-primary);
  vertical-align: middle;
}

.td-muted { color: var(--txt-secondary); }
.td-center { text-align: center; }
.td-actions { display: flex; gap: 6px; align-items: center; }

/* ── Forms ────────────────────────────────────────────────────── */
.form-group { margin-bottom: var(--space-lg); }

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--txt-secondary);
  margin-bottom: 6px;
}

.form-label.required::after {
  content: ' *';
  color: var(--clr-danger);
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border-clr);
  border-radius: var(--radius-md);
  color: var(--txt-primary);
  font-size: 14px;
  transition: all var(--transition);
  appearance: none;
}

.form-control:focus {
  outline: none;
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px var(--clr-primary-glow);
  background: rgba(99, 102, 241, 0.05);
}

.form-control::placeholder { color: var(--txt-muted); }

select.form-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9L12 15L18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 36px;
}

textarea.form-control { resize: vertical; min-height: 100px; }

.form-hint {
  font-size: 12px;
  color: var(--txt-muted);
  margin-top: 4px;
}

.form-error {
  font-size: 12px;
  color: var(--clr-danger);
  margin-top: 4px;
}

.form-row {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* ── Badges ───────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge--draft  { background: rgba(245,158,11,0.15); color: #fbbf24; border: 1px solid rgba(245,158,11,0.3); }
.badge--final  { background: rgba(16,185,129,0.15); color: #34d399; border: 1px solid rgba(16,185,129,0.3); }
.badge--1, .badge--sem1 { background: rgba(99,102,241,0.15); color: var(--clr-primary-light); border: 1px solid rgba(99,102,241,0.3); }
.badge--2, .badge--sem2 { background: rgba(6,182,212,0.15);  color: #22d3ee; border: 1px solid rgba(6,182,212,0.3); }

/* ── Alerts ───────────────────────────────────────────────────── */
.alert {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  margin-bottom: var(--space-lg);
  transition: all 0.4s ease;
  border-left: 4px solid;
}

.alert__icon { font-size: 16px; font-weight: 800; }

.alert--success { background: rgba(16,185,129,0.12); border-color: var(--clr-success); color: #6ee7b7; }
.alert--error   { background: rgba(239,68,68,0.12);  border-color: var(--clr-danger);  color: #fca5a5; }
.alert--warning { background: rgba(245,158,11,0.12); border-color: var(--clr-warning); color: #fcd34d; }
.alert--info    { background: rgba(59,130,246,0.12); border-color: var(--clr-info);    color: #93c5fd; }

/* ── Pagination ──────────────────────────────────────────────── */
.pagination {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  justify-content: center;
  margin-top: var(--space-lg);
}

.pagination__btn {
  display: flex; align-items: center; justify-content: center;
  width: 34px; height: 34px;
  border-radius: var(--radius-md);
  font-size: 13px; font-weight: 600;
  color: var(--txt-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border-clr);
  transition: all var(--transition);
  text-decoration: none;
}

.pagination__btn:hover {
  background: rgba(99,102,241,0.15);
  border-color: var(--clr-primary);
  color: var(--clr-primary-light);
}

.pagination__btn.active {
  background: var(--clr-primary);
  border-color: var(--clr-primary);
  color: #fff;
}

.pagination__btn.disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* ── Sidebar Overlay ──────────────────────────────────────────── */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 99;
  backdrop-filter: blur(2px);
}

.sidebar-overlay.visible { display: block; }

/* ── Empty State ─────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: var(--space-2xl) var(--space-xl);
  color: var(--txt-muted);
}

.empty-state__icon {
  font-size: 56px;
  margin-bottom: var(--space-md);
  opacity: 0.4;
}

.empty-state__title {
  font-size: 18px;
  font-weight: 700;
  color: var(--txt-secondary);
  margin-bottom: 8px;
}

.empty-state__desc {
  font-size: 14px;
  margin-bottom: var(--space-lg);
}

/* ── Progress Bar ────────────────────────────────────────────── */
.progress {
  height: 6px;
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress__bar {
  height: 100%;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-secondary));
  border-radius: var(--radius-full);
  transition: width 0.6s ease;
}

/* ── Section Divider ─────────────────────────────────────────── */
.section-divider {
  border: none;
  border-top: 1px solid var(--border-clr);
  margin: var(--space-xl) 0;
}

/* ── Timeline (Promes visual) ────────────────────────────────── */
.promes-grid {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-clr);
}

.promes-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 800px;
  font-size: 12px;
}

.promes-table th,
.promes-table td {
  border: 1px solid var(--border-clr);
  padding: 8px;
  text-align: center;
}

.promes-table thead th {
  background: rgba(99,102,241,0.12);
  color: var(--clr-primary-light);
  font-size: 11px;
}

.promes-table .materi-cell {
  text-align: left;
  white-space: nowrap;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.promes-table .filled {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: transparent;
  position: relative;
}

.promes-table .filled::after {
  content: '●';
  color: #fff;
  font-size: 10px;
}

/* ── Tabs ─────────────────────────────────────────────────────── */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-input);
  border-radius: var(--radius-lg);
  padding: 4px;
  margin-bottom: var(--space-xl);
  width: fit-content;
}

.tab-btn {
  padding: 8px 20px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 600;
  color: var(--txt-secondary);
  transition: all var(--transition);
  cursor: pointer;
  background: none;
  border: none;
}

.tab-btn.active {
  background: var(--bg-card);
  color: var(--txt-primary);
  box-shadow: var(--shadow-sm);
}

.tab-btn:hover:not(.active) { color: var(--txt-primary); }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }
  .main-wrapper { margin-left: 0; }
  .topbar { padding: 0 var(--space-lg); }
  .topbar__menu-btn { display: flex; }
  .topbar__school { display: none; }
  .main-content { padding: var(--space-lg); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .page-header { flex-direction: column; align-items: flex-start; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
}

/* ── Print Styles ────────────────────────────────────────────── */
@media print {
  .sidebar, .topbar, .page-header__actions, .btn, .no-print {
    display: none !important;
  }
  .main-wrapper { margin-left: 0; }
  .main-content { padding: 0; }
  body { background: #fff; color: #000; }
  .card { border: 1px solid #ccc; break-inside: avoid; }
  table { font-size: 11px; }
  thead th { background: #f0f0f0 !important; color: #000; }
}

/* ── Animations ──────────────────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.fade-in-up { animation: fadeInUp 0.4s ease forwards; }

/* Stagger animation for stat cards */
.stat-card:nth-child(1) { animation: fadeInUp 0.3s ease both; }
.stat-card:nth-child(2) { animation: fadeInUp 0.4s ease both; }
.stat-card:nth-child(3) { animation: fadeInUp 0.5s ease both; }
.stat-card:nth-child(4) { animation: fadeInUp 0.6s ease both; }

/* Gradient animated background for login */
.login-bg {
  background: linear-gradient(-45deg, #0f0f1a, #1a0a2e, #0d1a3a, #0f1a1a);
  background-size: 400% 400%;
  animation: gradientBG 12s ease infinite;
}

@keyframes gradientBG {
  0%   { background-position: 0%   50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0%   50%; }
}