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

:root {
  --primary: #1e3a8a;
  --primary-light: #3b82f6;
  --accent: #f97316;
  --accent-hover: #ea580c;
  --background: #ffffff;
  --secondary-bg: #f3f4f6;
  --surface-muted: #eef4ff;
  --text-main: #172033;
  --text-muted: #667085;
  --text-soft: #94a3b8;
  --white: #ffffff;
  --danger: #dc2626;
  --success: #10b981;
  --radius-xl: 24px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 12px;
  --shadow-sm: 0 10px 24px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 18px 40px rgba(15, 23, 42, 0.12);
  --scrollbar-track: rgba(148, 163, 184, 0.12);
  --scrollbar-thumb: rgba(59, 130, 246, 0.42);
  --scrollbar-thumb-hover: rgba(30, 58, 138, 0.56);
}

:root[data-theme="dark"] {
  --primary: #bfdbfe;
  --primary-light: #7cc4ff;
  --accent: #ff9a4d;
  --accent-hover: #ff8a33;
  --background: #0b1220;
  --secondary-bg: #0f172a;
  --surface-muted: #1a2942;
  --text-main: #f3f7ff;
  --text-muted: #c9d6ea;
  --text-soft: #98a9c3;
  --white: #162235;
  --danger: #f87171;
  --success: #34d399;
  --shadow-sm: 0 12px 24px rgba(2, 6, 23, 0.42);
  --shadow-md: 0 22px 48px rgba(2, 6, 23, 0.56);
  --scrollbar-track: rgba(148, 163, 184, 0.1);
  --scrollbar-thumb: rgba(124, 196, 255, 0.34);
  --scrollbar-thumb-hover: rgba(191, 219, 254, 0.52);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  width: 100%;
  min-height: 100%;
}

body {
  font-family: "Poppins", sans-serif;
  background:
    radial-gradient(circle at top, rgba(59, 130, 246, 0.16), transparent 28%),
    linear-gradient(180deg, #f8fbff 0%, #eef2ff 100%);
  color: var(--text-main);
  line-height: 1.5;
  overflow-x: hidden;
  display: flex;
  justify-content: center;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;
  overscroll-behavior: none;
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

:root[data-theme="dark"] body {
  background:
    radial-gradient(circle at top, rgba(124, 196, 255, 0.14), transparent 28%),
    linear-gradient(180deg, #08101c 0%, #0b1220 100%);
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
  appearance: none;
}

#app {
  width: 100%;
  max-width: 450px;
  min-height: 100vh;
  min-height: 100dvh;
  position: relative;
  overflow: visible;
  background: var(--background);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
}

body::-webkit-scrollbar,
.state-grid::-webkit-scrollbar,
.viewer-paper::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

body::-webkit-scrollbar-track,
.state-grid::-webkit-scrollbar-track,
.viewer-paper::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
  border-radius: 999px;
}

body::-webkit-scrollbar-thumb,
.state-grid::-webkit-scrollbar-thumb,
.viewer-paper::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

body::-webkit-scrollbar-thumb:hover,
.state-grid::-webkit-scrollbar-thumb:hover,
.viewer-paper::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
  border: 2px solid transparent;
  background-clip: padding-box;
}

h1,
h2,
h3 {
  color: var(--primary);
  font-weight: 700;
  letter-spacing: -0.02em;
}

p {
  color: var(--text-muted);
}

.screen {
  position: relative;
  width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  height: auto;
  display: flex;
  flex-direction: column;
  background: var(--background);
  flex: 1 0 auto;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.screen-enter-forward {
  animation: screenInForward 0.32s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.screen-enter-back {
  animation: screenInBack 0.28s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.content-scroll {
  flex: 1 0 auto;
  overflow: visible;
  padding: 20px;
  min-height: auto;
}

.sheet-screen {
  justify-content: flex-end;
  background: rgba(15, 23, 42, 0.28);
}

.sheet-backdrop {
  position: absolute;
  inset: 0;
  border: none;
  background: transparent;
}

.sheet-panel {
  position: relative;
  z-index: 1;
  width: 100%;
  max-height: min(78dvh, 720px);
  overflow: auto;
  padding: 12px 20px 24px;
  border-radius: 28px 28px 0 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.98) 100%);
  box-shadow: 0 -12px 34px rgba(15, 23, 42, 0.14);
}

.sheet-handle {
  width: 52px;
  height: 5px;
  margin: 0 auto 16px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.5);
}

.sheet-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.eyebrow {
  display: inline-block;
  color: var(--primary-light);
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.card {
  background: var(--white);
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

.card:active {
  transform: scale(0.97);
}

.glass {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

@media (hover: hover) and (pointer: fine) {
  .card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
  }
}

.btn {
  width: 100%;
  border: none;
  border-radius: var(--radius-md);
  padding: 14px 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 600;
  transition: transform 0.18s ease, box-shadow 0.28s ease, background 0.28s ease, color 0.28s ease, opacity 0.28s ease;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
}

.btn:active {
  transform: scale(0.95);
}

.btn-primary {
  color: var(--white);
  background: linear-gradient(135deg, var(--accent) 0%, #fb923c 100%);
  box-shadow: 0 16px 24px rgba(249, 115, 22, 0.22);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-hover) 0%, var(--accent) 100%);
}

.btn-secondary {
  color: var(--white);
  background: linear-gradient(135deg, var(--primary-light) 0%, #60a5fa 100%);
}

.btn-outline {
  color: var(--primary-light);
  background: transparent;
  border: 1.5px solid rgba(59, 130, 246, 0.3);
}

.hidden {
  display: none !important;
}

.icon-button {
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-muted);
  color: var(--primary);
}

.icon-button-dark {
  background: rgba(255, 255, 255, 0.14);
  color: var(--white);
}

.topbar,
.section-header {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.topbar {
  justify-content: space-between;
}

.home-topbar {
  align-items: flex-start;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.menu-shell {
  position: relative;
  z-index: 40;
}

.menu-backdrop {
  position: fixed;
  inset: 0;
  border: none;
  background: transparent;
  z-index: 19;
  cursor: default;
}

.menu-panel {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 220px;
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  box-shadow: var(--shadow-md);
  padding: 10px;
  z-index: 20;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.98) 100%);
}

.menu-profile {
  padding: 10px 10px 14px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.16);
  margin-bottom: 6px;
}

.menu-profile strong {
  display: block;
  margin: 6px 0 2px;
  color: var(--primary);
}

.menu-profile p {
  font-size: 0.86rem;
  color: #475467;
}

.menu-profile-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.menu-item {
  width: 100%;
  border: none;
  background: transparent;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 10px;
  border-radius: 12px;
  color: #172033;
  text-align: left;
}

.menu-item-active {
  background: rgba(59, 130, 246, 0.12);
  color: var(--primary);
}

.menu-item-danger {
  color: var(--danger);
}

.menu-item:hover {
  background: rgba(59, 130, 246, 0.08);
}

:root[data-theme="dark"] .topbar,
:root[data-theme="dark"] .section-header {
  background: rgba(11, 18, 32, 0.88);
}

:root[data-theme="dark"] .card,
:root[data-theme="dark"] .menu-panel,
:root[data-theme="dark"] .search-shell,
:root[data-theme="dark"] .upload-box,
:root[data-theme="dark"] .summary-card,
:root[data-theme="dark"] .viewer-paper,
:root[data-theme="dark"] .viewer-block,
:root[data-theme="dark"] .empty-state {
  background: #162235;
  border-color: rgba(152, 169, 195, 0.18);
}

:root[data-theme="dark"] .menu-panel {
  background: linear-gradient(180deg, rgba(22, 34, 53, 0.98) 0%, rgba(11, 18, 32, 0.98) 100%);
}

:root[data-theme="dark"] .dashboard-screen,
:root[data-theme="dark"] .list-screen,
:root[data-theme="dark"] .payment-screen,
:root[data-theme="dark"] .admin-screen,
:root[data-theme="dark"] .not-found-screen,
:root[data-theme="dark"] #app,
:root[data-theme="dark"] .screen {
  background:
    linear-gradient(180deg, rgba(11, 18, 32, 0.9) 0%, rgba(11, 18, 32, 1) 100%);
}

:root[data-theme="dark"] .field input,
:root[data-theme="dark"] .field select,
:root[data-theme="dark"] .search-shell input,
:root[data-theme="dark"] .toggle-chip,
:root[data-theme="dark"] .icon-button,
:root[data-theme="dark"] .menu-item,
:root[data-theme="dark"] .list-row {
  background: #101a2b;
  color: var(--text-main);
}

:root[data-theme="dark"] p,
:root[data-theme="dark"] .hero-text,
:root[data-theme="dark"] .list-row span,
:root[data-theme="dark"] .menu-profile p,
:root[data-theme="dark"] .subscription-note,
:root[data-theme="dark"] .viewer-paper-header,
:root[data-theme="dark"] .stat-card span,
:root[data-theme="dark"] .device-meta {
  color: var(--text-muted);
}

:root[data-theme="dark"] .menu-profile strong,
:root[data-theme="dark"] .list-row strong,
:root[data-theme="dark"] .paper-card h3,
:root[data-theme="dark"] .user-card strong {
  color: var(--text-main);
}

:root[data-theme="dark"] .price-badge {
  color: #ffbf86;
}

:root[data-theme="dark"] .eyebrow {
  color: #9fd2ff;
}

:root[data-theme="dark"] .list-row {
  border-bottom-color: rgba(152, 169, 195, 0.14);
}

:root[data-theme="dark"] .list-block,
:root[data-theme="dark"] .section-header {
  border-color: rgba(152, 169, 195, 0.14);
}

:root[data-theme="dark"] .menu-item:hover,
:root[data-theme="dark"] .toggle-chip-active {
  background: rgba(124, 196, 255, 0.14);
}

:root[data-theme="dark"] .sheet-screen {
  background: rgba(2, 6, 23, 0.48);
}

:root[data-theme="dark"] .sheet-panel,
:root[data-theme="dark"] .section-intro {
  background: linear-gradient(180deg, rgba(22, 34, 53, 0.98) 0%, rgba(11, 18, 32, 0.98) 100%);
}

:root[data-theme="dark"] .hero-banner {
  background:
    radial-gradient(circle at top right, rgba(191, 219, 254, 0.16), transparent 28%),
    linear-gradient(135deg, #17325c 0%, #214777 52%, #2b5f96 100%);
  box-shadow: 0 18px 36px rgba(2, 6, 23, 0.34);
}

:root[data-theme="dark"] .hero-banner h3,
:root[data-theme="dark"] .hero-banner p,
:root[data-theme="dark"] .hero-banner .hero-text,
:root[data-theme="dark"] .hero-badge,
:root[data-theme="dark"] .hero-visual-card strong,
:root[data-theme="dark"] .hero-visual-card span,
:root[data-theme="dark"] .success-badge {
  color: #f8fbff;
}

:root[data-theme="dark"] .hero-text {
  color: rgba(248, 251, 255, 0.94);
}

:root[data-theme="dark"] .hero-badge {
  background: rgba(248, 251, 255, 0.16);
  border: 1px solid rgba(248, 251, 255, 0.14);
}

:root[data-theme="dark"] .hero-visual-card {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(248, 251, 255, 0.18);
}

:root[data-theme="dark"] .success-card {
  padding-top: 40px;
  background:
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.18), transparent 30%),
    linear-gradient(180deg, rgba(16, 185, 129, 0.38), rgba(23, 50, 92, 0.2));
}

:root[data-theme="dark"] .campus-card {
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.18), transparent 26%),
    linear-gradient(180deg, rgba(124, 196, 255, 0.3), rgba(23, 50, 92, 0.18));
}

:root[data-theme="dark"] .trophy-card {
  background:
    radial-gradient(circle at top right, rgba(255, 154, 77, 0.24), transparent 30%),
    linear-gradient(180deg, rgba(255, 185, 107, 0.3), rgba(23, 50, 92, 0.2));
}

:root[data-theme="dark"] .paper-group-head {
  background: linear-gradient(180deg, rgba(11, 18, 32, 0.98) 0%, rgba(11, 18, 32, 0.9) 100%);
}

:root[data-theme="dark"] .home-actions {
  background: linear-gradient(180deg, rgba(11, 18, 32, 0.96) 0%, rgba(11, 18, 32, 0.88) 100%);
}

:root[data-theme="dark"] .state-card,
:root[data-theme="dark"] .semester-card,
:root[data-theme="dark"] .stat-blue,
:root[data-theme="dark"] .stat-orange,
:root[data-theme="dark"] .stat-sky,
:root[data-theme="dark"] .subscription-card {
  background: linear-gradient(180deg, #1a2942 0%, #101a2b 100%);
}

:root[data-theme="dark"] .price-badge {
  background: rgba(255, 154, 77, 0.16);
}

:root[data-theme="dark"] .viewer-paper::after {
  color: rgba(191, 219, 254, 0.1);
}

:root[data-theme="dark"] .btn-outline {
  border-color: rgba(124, 196, 255, 0.28);
}

:root[data-theme="dark"] .status-open {
  background: rgba(52, 211, 153, 0.16);
  color: #7ff0c7;
}

:root[data-theme="dark"] .status-locked {
  background: rgba(255, 154, 77, 0.16);
  color: #ffc48f;
}

:root[data-theme="dark"] .status-danger {
  background: rgba(248, 113, 113, 0.16);
  color: #ffb3b3;
}

:root[data-theme="dark"] .operator-selected,
:root[data-theme="dark"] .toggle-chip-active,
:root[data-theme="dark"] .menu-item-active {
  border-color: rgba(124, 196, 255, 0.24);
  box-shadow: 0 10px 24px rgba(124, 196, 255, 0.08);
}

:root[data-theme="dark"] .search-shell,
:root[data-theme="dark"] .field input,
:root[data-theme="dark"] .field select {
  border-color: rgba(152, 169, 195, 0.16);
}

:root[data-theme="dark"] .field input:focus,
:root[data-theme="dark"] .field select:focus {
  border-color: rgba(124, 196, 255, 0.42);
  box-shadow: 0 0 0 4px rgba(124, 196, 255, 0.12);
}

:root[data-theme="dark"] .mini-tag,
:root[data-theme="dark"] .semester-chip {
  background: rgba(124, 196, 255, 0.12);
  color: #b9e0ff;
}

.section-header {
  border-bottom: 1px solid rgba(148, 163, 184, 0.14);
}

.auth-screen {
  background:
    linear-gradient(145deg, rgba(30, 58, 138, 0.96), rgba(59, 130, 246, 0.84)),
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.16), transparent 30%);
  padding: 18px;
  justify-content: center;
  overflow: visible;
}

.not-found-screen {
  justify-content: center;
  padding: 20px;
  background:
    radial-gradient(circle at top, rgba(59, 130, 246, 0.14), transparent 28%),
    linear-gradient(180deg, #f8fbff 0%, #eef2ff 100%);
}

.not-found-shell {
  width: 100%;
}

.not-found-card {
  text-align: center;
  padding: 30px 22px;
}

.not-found-icon {
  width: 78px;
  height: 78px;
  margin: 0 auto 18px;
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  color: var(--primary);
}

.not-found-icon svg {
  width: 36px;
  height: 36px;
}

.not-found-card h1 {
  margin: 10px 0 8px;
}

.not-found-card p {
  max-width: 280px;
  margin: 0 auto;
}

.not-found-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 22px;
}

.auth-shell {
  position: relative;
  width: 100%;
}

.auth-shell::before,
.auth-shell::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  filter: blur(2px);
}

.auth-shell::before {
  width: 180px;
  height: 180px;
  top: -50px;
  right: -40px;
}

.auth-shell::after {
  width: 120px;
  height: 120px;
  bottom: -20px;
  left: -20px;
}

.auth-card {
  position: relative;
  z-index: 1;
  border-radius: var(--radius-xl);
  padding: 28px 22px;
  width: 100%;
  backdrop-filter: blur(10px);
}

.logo-mark {
  width: 72px;
  height: 72px;
  border-radius: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  color: var(--primary);
}

.logo-mark svg {
  width: 34px;
  height: 34px;
}

.auth-copy h1 {
  margin: 8px 0 10px;
  font-size: 1.8rem;
  line-height: 1.15;
}

.auth-copy p {
  margin-bottom: 22px;
}

.alert-banner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  border-radius: var(--radius-md);
  background: #fff7ed;
  border: 1px solid rgba(249, 115, 22, 0.18);
  padding: 14px;
  margin-bottom: 18px;
  backdrop-filter: blur(10px);
}

.alert-banner strong {
  display: block;
  color: #9a3412;
  margin-bottom: 4px;
}

.ghost-action {
  border: none;
  background: transparent;
  color: var(--accent);
  font-weight: 600;
}

.auth-form,
.form-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.admin-form-head,
.section-copy {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.toggle-row {
  display: flex;
  gap: 10px;
}

.toggle-chip {
  flex: 1;
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 14px;
  background: #f8fafc;
  color: var(--text-main);
  padding: 12px 14px;
  font-weight: 600;
}

.toggle-chip-active {
  background: linear-gradient(180deg, #eff6ff 0%, #dbeafe 100%);
  color: var(--primary);
  border-color: rgba(59, 130, 246, 0.34);
  box-shadow: 0 10px 22px rgba(59, 130, 246, 0.12);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field-error {
  min-height: 18px;
  font-size: 0.78rem;
  color: var(--danger);
}

.field-invalid input,
.field-invalid select {
  border-color: rgba(220, 38, 38, 0.5);
  box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.08);
}

.field span {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-main);
}

.field input,
.field select {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.3);
  background: #f8fafc;
  padding: 13px 14px;
  color: var(--text-main);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field input:focus,
.field select:focus {
  border-color: rgba(59, 130, 246, 0.6);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.12);
}

.form-error {
  font-size: 0.88rem;
  color: var(--danger);
}

.auth-footer {
  margin-top: 18px;
  text-align: center;
}

.link-action {
  color: var(--primary-light);
  font-weight: 500;
  text-decoration: none;
}

.dashboard-screen,
.list-screen,
.payment-screen,
.admin-screen {
  background:
    linear-gradient(180deg, rgba(239, 244, 255, 0.6) 0%, rgba(255, 255, 255, 0) 24%),
    var(--background);
}

.dashboard-screen .semester-grid,
.dashboard-screen .subscription-card,
.admin-screen .stats-grid,
.admin-screen .chart-card,
.admin-screen .admin-actions {
  flex-shrink: 0;
}

.home-scroll {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-top: 14px;
}

.hero-banner {
  margin: 0 20px 10px;
  border-radius: 24px;
  padding: 18px;
  background:
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.16), transparent 26%),
    linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: var(--white);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  transition: transform 0.2s ease, box-shadow 0.28s ease;
  overflow: hidden;
  touch-action: pan-y;
}

.hero-banner-slide-out {
  animation: heroSlideOut 0.26s ease forwards;
}

.hero-banner-slide-in {
  animation: heroSlideIn 0.52s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.hero-banner:active {
  transform: scale(0.98);
}

.hero-banner h3,
.hero-banner p,
.hero-badge {
  color: var(--white);
}

.hero-banner h3 {
  margin-top: 6px;
  font-size: 1rem;
  line-height: 1.2;
}

.hero-text {
  display: block;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.84rem;
  line-height: 1.35;
}

.hero-badge {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}

.hero-visual {
  min-width: 108px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
}

.hero-visual-card {
  width: 108px;
  min-height: 118px;
  border-radius: 20px;
  padding: 12px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 4px;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.success-card {
  padding-top: 40px;
}

.success-card .success-medal {
  margin-top: auto;
}

.hero-visual-card strong,
.hero-visual-card span {
  color: var(--white);
}

.hero-visual-card span {
  font-size: 0.68rem;
  opacity: 0.9;
}

.hero-visual-card strong {
  font-size: 0.82rem;
  line-height: 1.15;
}

.success-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(249, 115, 22, 0.22);
  color: var(--white);
  font-size: 0.62rem;
  font-weight: 600;
}

.success-medal,
.trophy-circle,
.campus-book {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 4px;
  background: rgba(255, 255, 255, 0.18);
}

.success-medal svg,
.trophy-circle svg,
.campus-book svg {
  width: 22px;
  height: 22px;
  color: var(--white);
}

.success-card {
  background:
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.24), transparent 30%),
    linear-gradient(180deg, rgba(16, 185, 129, 0.34), rgba(30, 58, 138, 0.12));
}

.campus-card {
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.2), transparent 26%),
    linear-gradient(180deg, rgba(59, 130, 246, 0.28), rgba(15, 23, 42, 0.12));
}

.campus-window {
  position: absolute;
  top: 12px;
  right: 10px;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.24) 48%, transparent 48%, transparent 52%, rgba(255, 255, 255, 0.24) 52%),
    linear-gradient(rgba(255, 255, 255, 0.24) 48%, transparent 48%, transparent 52%, rgba(255, 255, 255, 0.24) 52%);
}

.trophy-card {
  background:
    radial-gradient(circle at top right, rgba(249, 115, 22, 0.2), transparent 30%),
    linear-gradient(180deg, rgba(245, 158, 11, 0.3), rgba(30, 58, 138, 0.16));
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: -2px;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border: none;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.4);
}

.carousel-dot-active {
  width: 28px;
  background: var(--primary-light);
}

.home-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  position: sticky;
  top: 88px;
  z-index: 20;
  padding-top: 2px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(255, 255, 255, 0.88) 100%);
}

.state-header h3 {
  margin-top: 6px;
}

.state-grid {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 6px;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) transparent;
}

.state-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 180px;
  flex: 0 0 180px;
  scroll-snap-align: start;
}

.state-card-head {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.state-card h4 {
  color: var(--primary);
  font-size: 1.4rem;
}

.level-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.level-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 18px;
}

.level-head h3 {
  margin-top: 6px;
}

.semester-grid,
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding: 0 20px;
}

.semester-card {
  text-align: left;
  border: none;
  background: linear-gradient(180deg, #eff6ff 0%, #ffffff 100%);
}

.semester-card strong {
  display: block;
  margin-bottom: 6px;
  color: var(--primary);
}

.semester-card span:last-child {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.semester-chip {
  width: fit-content;
  margin-bottom: 16px;
  padding: 8px 12px;
  border-radius: 12px;
  background: rgba(59, 130, 246, 0.12);
  color: var(--primary-light);
  font-weight: 700;
}

.subscription-card {
  margin: 24px 20px 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
  background:
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.18), transparent 24%),
    linear-gradient(145deg, #eff6ff 0%, #ffffff 100%);
}

.subscription-card h3 {
  margin: 8px 0;
}

.subscription-note {
  font-size: 0.92rem;
}

.section-intro {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
  background:
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.12), transparent 30%),
    linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
}

.compact-intro {
  padding: 18px;
}

.about-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.search-shell {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(248, 250, 252, 0.78);
  border: 1px solid rgba(148, 163, 184, 0.24);
  border-radius: 16px;
  padding: 12px 14px;
  margin-bottom: 18px;
}

.search-shell svg {
  color: var(--text-soft);
}

.search-shell input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
}

.list-block {
  border-top: 1px solid rgba(148, 163, 184, 0.14);
}

.list-row {
  width: 100%;
  border: none;
  background: transparent;
  padding: 18px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-align: left;
  border-bottom: 1px solid rgba(148, 163, 184, 0.14);
  animation: slideIn 0.3s ease both;
}

.list-row strong {
  display: block;
  margin-bottom: 4px;
  color: var(--text-main);
}

.list-row span {
  color: var(--text-muted);
  font-size: 0.86rem;
}

.list-row svg {
  color: var(--primary-light);
}

.paper-stack,
.user-stack {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.paper-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.paper-group + .paper-group {
  margin-top: 10px;
}

.paper-group-head {
  padding-top: 4px;
  position: sticky;
  top: 88px;
  z-index: 5;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(255, 255, 255, 0.9) 100%);
  padding-bottom: 8px;
}

.paper-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.paper-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
}

.price-badge {
  display: inline-flex;
  margin-top: 10px;
  padding: 6px 10px;
  border-radius: 999px;
  background: #fff7ed;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: fit-content;
  padding: 7px 10px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 600;
}

.status-open {
  background: rgba(16, 185, 129, 0.12);
  color: #047857;
}

.status-locked {
  background: rgba(249, 115, 22, 0.12);
  color: #c2410c;
}

.status-danger {
  background: rgba(220, 38, 38, 0.12);
  color: var(--danger);
}

.viewer-screen {
  background: linear-gradient(180deg, #091222 0%, #0f172a 100%);
  color: var(--white);
  overflow: hidden;
}

.viewer-topbar {
  display: grid;
  grid-template-columns: 44px 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(9, 18, 34, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.viewer-topbar h2,
.viewer-topbar .eyebrow,
.viewer-page {
  color: var(--white);
}

.viewer-page {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.72);
}

.viewer-stage {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  min-height: 0;
  overflow: hidden;
}

.viewer-overlay {
  position: absolute;
  inset: 20px;
  border-radius: 30px;
  background: linear-gradient(180deg, rgba(59, 130, 246, 0.18), rgba(15, 23, 42, 0.12));
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.viewer-paper {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  max-height: 100%;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
  border-radius: 24px;
  background: #ffffff;
  color: var(--text-main);
  padding: 24px;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.22);
  padding-bottom: 120px;
}

.viewer-paper::after {
  content: "ExamBox - Utilisation personnelle";
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%) rotate(-24deg);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  white-space: nowrap;
  color: rgba(30, 58, 138, 0.18);
  opacity: 0.28;
  pointer-events: none;
}

.viewer-paper-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.viewer-paper h3 {
  margin-bottom: 8px;
}

.viewer-block {
  margin-top: 18px;
  padding: 16px;
  border-radius: 18px;
  background: #f8fafc;
}

.viewer-security {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 24px;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 16px;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(10px);
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.76rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.viewer-footer {
  padding: 20px;
  flex-shrink: 0;
}

.summary-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.summary-card strong {
  color: var(--primary);
  font-size: 1.2rem;
}

.operator-section h3 {
  margin-bottom: 14px;
}

.payment-choices {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.operator-card {
  border: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 18px 16px;
}

.operator-selected {
  border: 2px solid rgba(59, 130, 246, 0.45);
  background: linear-gradient(180deg, #eff6ff 0%, #ffffff 100%);
}

.operator-logo {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.operator-mtn {
  background: #ffcc00;
  color: #111827;
}

.operator-orange {
  background: #ff6600;
  color: var(--white);
}

.payment-loader {
  margin-top: 20px;
  text-align: center;
  min-height: 52px;
}

.payment-success {
  color: var(--success);
  font-weight: 600;
  animation: fadeIn 0.5s ease;
}

.loader-ring {
  width: 42px;
  height: 42px;
  margin: 0 auto;
  border-radius: 50%;
  border: 4px solid rgba(59, 130, 246, 0.16);
  border-top-color: var(--primary-light);
  animation: spin 0.8s linear infinite;
}

.admin-screen {
  background:
    linear-gradient(180deg, rgba(30, 58, 138, 0.06) 0%, rgba(255, 255, 255, 0) 34%),
    var(--secondary-bg);
}

.admin-header {
  background: linear-gradient(135deg, var(--primary) 0%, #2448a6 100%);
}

.admin-header h2,
.admin-header .eyebrow {
  color: var(--white);
}

.stat-card {
  min-height: 146px;
}

.stat-card span {
  display: block;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.stat-card strong {
  display: block;
  font-size: 1.7rem;
  color: var(--primary);
  margin-bottom: 8px;
}

.stat-blue {
  background: linear-gradient(180deg, #eff6ff 0%, #ffffff 100%);
}

.stat-orange {
  background: linear-gradient(180deg, #fff7ed 0%, #ffffff 100%);
}

.stat-sky {
  grid-column: span 2;
  background: linear-gradient(180deg, #ecfeff 0%, #ffffff 100%);
}

.chart-card {
  margin: 20px;
}

.chart-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.mini-tag {
  height: fit-content;
  padding: 7px 10px;
  border-radius: 999px;
  background: var(--surface-muted);
  color: var(--primary-light);
  font-size: 0.76rem;
  font-weight: 600;
}

.mini-chart {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  height: 160px;
}

.mini-chart span {
  flex: 1;
  border-radius: 999px 999px 14px 14px;
  background: linear-gradient(180deg, var(--primary-light) 0%, var(--primary) 100%);
}

.admin-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 0 20px 20px;
}

.admin-recent {
  padding: 0 20px 20px;
}

.recent-paper-highlight {
  border-color: rgba(249, 115, 22, 0.4);
  box-shadow: 0 18px 30px rgba(249, 115, 22, 0.12);
}

.upload-box {
  min-height: 122px;
  border: 1.5px dashed rgba(59, 130, 246, 0.28);
  border-radius: 18px;
  padding: 24px;
  text-align: center;
  color: var(--text-muted);
  background: linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.upload-box svg {
  color: var(--primary-light);
  margin-bottom: 8px;
}

.user-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}

.admin-user-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.user-card strong {
  display: block;
  margin-bottom: 4px;
}

.device-meta {
  margin-top: 6px;
  font-size: 0.8rem;
  color: var(--text-soft);
}

.user-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.compact-btn {
  width: auto;
  min-width: 110px;
}

.empty-state {
  border-radius: 18px;
  padding: 18px;
  background: #f8fafc;
  color: var(--text-muted);
}

.rich-empty-state {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.empty-state-icon {
  width: 52px;
  height: 52px;
  border-radius: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  color: var(--primary);
}

.empty-state-icon svg {
  width: 24px;
  height: 24px;
}

.rich-empty-state strong {
  color: var(--primary);
  font-size: 1rem;
}

.rich-empty-state p {
  max-width: 320px;
}

.empty-state-action {
  width: auto;
  min-width: 180px;
}

.toast-stack {
  position: fixed;
  left: 50%;
  bottom: 22px;
  z-index: 120;
  transform: translateX(-50%);
  width: min(calc(100% - 28px), 390px);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  border-radius: 18px;
  padding: 14px 16px;
  color: #fff;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.18);
  animation: toastUp 0.28s ease both;
}

.toast svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.toast span {
  font-weight: 500;
}

.toast-info {
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.96) 0%, rgba(59, 130, 246, 0.96) 100%);
}

.toast-success {
  background: linear-gradient(135deg, rgba(5, 150, 105, 0.96) 0%, rgba(16, 185, 129, 0.96) 100%);
}

.toast-warning {
  background: linear-gradient(135deg, rgba(194, 65, 12, 0.96) 0%, rgba(249, 115, 22, 0.96) 100%);
}

.skeleton {
  background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: 8px;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(14px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes heroSlideOut {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(-34px);
  }
}

@keyframes heroSlideIn {
  from {
    opacity: 0;
    transform: translateX(42px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-8px);
  }
  75% {
    transform: translateX(8px);
  }
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

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

@keyframes toastUp {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes screenInForward {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes screenInBack {
  from {
    opacity: 0;
    transform: translateX(-14px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-fade {
  animation: fadeIn 0.35s ease both;
}

.animate-slide-up {
  animation: slideUp 0.45s ease both;
}

.animate-shake {
  animation: shake 0.25s linear 2;
}

@media (max-width: 420px) {
  #app {
    max-width: none;
    box-shadow: none;
    min-height: auto;
  }

  .screen {
    min-height: 100svh;
  }

  .hero-banner,
  .viewer-security,
  .user-card,
  .admin-user-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-visual {
    width: 100%;
    align-items: stretch;
  }

  .hero-visual-card {
    width: 100%;
    min-height: 104px;
  }

  .semester-grid,
  .stats-grid,
  .payment-choices,
  .home-actions,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .state-grid {
    gap: 12px;
    padding-bottom: 4px;
  }

  .state-card {
    min-width: 160px;
    flex-basis: 160px;
  }

  .chart-card {
    margin: 20px 20px 0;
  }

  .viewer-topbar {
    grid-template-columns: 44px 1fr;
  }

  .viewer-page {
    grid-column: 1 / -1;
  }

  .viewer-stage {
    padding: 16px;
  }

  .viewer-security {
    left: 16px;
    right: 16px;
    bottom: 18px;
  }

  .subscription-card,
  .hero-banner {
    margin-left: 16px;
    margin-right: 16px;
  }

  .home-scroll {
    gap: 12px;
    padding-top: 10px;
  }

  .semester-grid,
  .admin-actions,
  .admin-recent {
    padding-left: 16px;
    padding-right: 16px;
  }
}