/* web/static/css/style.css — System365 Brand Guide */

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

:root {
  --font-family: 'Montserrat', sans-serif;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;

  --color-primary: #2c6eb6;
  --color-primary-dark: #1c436f;
  --color-primary-light: #daeafa;
  --color-accent-blue: #4a90e2;

  --color-cta-green: #b4c648;
  --color-accent-yellow: #FFC107;

  --color-text: #121212;
  --color-text-muted: #6b7a8d;
  --color-bg: #fffffe;
  --color-bg-alt: #fffffe;
  --color-section-dark: #242833;
  --color-border: #d1d5db;
  --color-muted: #919da9;

  --btn-border-radius: 20px;
  --btn-shadow: rgba(0,0,0,0.25) 4px 4px 16px;
  --btn-padding: 12px 32px;

  --card-border-radius: 16px;
  --card-shadow: 0 1px 4px rgba(0,0,0,0.06);

  --max-width: 1170px;
  --section-padding: 40px 20px;
  --sidebar-width: 264px;
  --header-height: 64px;

  /* Emil Kowalski easings */
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-in-out: cubic-bezier(0.77, 0, 0.175, 1);

  /* Sidebar palette */
  --sidebar-bg: #f2f7fd;
  --sidebar-border: #ccdff4;
  --sidebar-text: #3a5a80;
  --sidebar-text-muted: #8aabcc;
  --sidebar-active-bg: rgba(44,110,182,0.10);
  --sidebar-active-text: #1c436f;
  --sidebar-hover-bg: rgba(44,110,182,0.06);
  --sidebar-section-color: #5580a8;
}

/* ── Reduced motion ───────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

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

body {
  font-family: var(--font-family);
  font-weight: var(--font-weight-normal);
  background: var(--color-bg-alt);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); }

/* ── Layout shell ────────────────────────────────────────────────────────── */
.app-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-body {
  display: flex;
  flex: 1;
  padding-top: var(--header-height);
}

/* ── Header ──────────────────────────────────────────────────────────────── */
.app-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: linear-gradient(135deg, #daeafa 0%, #fffffe 100%);
  border-bottom: 1px solid #c5ddf5;
  display: flex;
  align-items: center;
  padding: 0 24px;
  z-index: 200;
  gap: 16px;
}

.header-logo img {
  height: 38px;
  display: block;
}

.header-spacer { flex: 1; }

.header-user {
  font-size: 13px;
  color: #1c436f;
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-user strong { color: #1c436f; font-weight: 600; }

.btn-logout {
  font-size: 13px;
  color: #1c436f;
  background: rgba(44,110,182,0.12);
  padding: 6px 14px;
  border-radius: 12px;
  cursor: pointer;
  transition: background 0.18s var(--ease-out), color 0.18s var(--ease-out);
}

.btn-logout:hover {
  background: rgba(44,110,182,0.22);
  color: #1c436f;
}

/* Hamburger (mobile only) */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  flex-direction: column;
  gap: 5px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #1c436f;
  border-radius: 2px;
  transition: all 0.28s var(--ease-out);
}

/* ── Sidebar ─────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  border-right: 1px solid var(--sidebar-border);
  position: fixed;
  top: var(--header-height);
  left: 0;
  bottom: 0;
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 100;
  transition: transform 0.3s var(--ease-out);
  padding: 16px 0 56px;
}

/* Thin scrollbar */
.sidebar::-webkit-scrollbar { width: 3px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb {
  background: rgba(44,110,182,0.16);
  border-radius: 4px;
}
.sidebar::-webkit-scrollbar-thumb:hover { background: rgba(44,110,182,0.28); }

.sidebar-nav {
  list-style: none;
  padding: 0;
}

/* ── Sidebar section labels ───────────────────────────────────────────────── */
.sidebar-nav .nav-section {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 1.8px;
  color: var(--sidebar-section-color);
  padding: 24px 20px 6px;
  font-weight: 700;
  opacity: 0.8;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Section label with icon inside toggle */
.nav-section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.nav-icon-section {
  opacity: 0.7;
  flex-shrink: 0;
}

/* ── Nav links ───────────────────────────────────────────────────────────── */
.sidebar-nav li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px 8px 20px;
  color: var(--sidebar-text);
  font-size: 13px;
  font-weight: 500;
  border-radius: 0 10px 10px 0;
  margin-right: 10px;
  letter-spacing: 0.1px;
  cursor: pointer;
  transition: color 0.16s var(--ease-out),
              background 0.16s var(--ease-out),
              transform 0.16s var(--ease-out);
  line-height: 1.4;
}

.nav-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--sidebar-text-muted);
  transition: color 0.16s var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .sidebar-nav li a:hover {
    color: var(--sidebar-active-text);
    background: var(--sidebar-hover-bg);
    transform: translateX(2px);
  }

  .sidebar-nav li a:hover .nav-icon {
    color: var(--color-primary);
  }
}

.sidebar-nav li a.active {
  color: var(--sidebar-active-text);
  background: var(--sidebar-active-bg);
  font-weight: 600;
  position: relative;
}

.sidebar-nav li a.active .nav-icon {
  color: var(--color-primary);
}

/* Active indicator — left pill */
.sidebar-nav li a.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 18px;
  background: var(--color-primary);
  border-radius: 0 3px 3px 0;
}

/* Bonus link accent */
.sidebar-nav li a.nav-link-bonus .nav-icon {
  color: #c9a900;
}

.sidebar-nav li a.nav-link-bonus {
  color: #7a6200;
}

@media (hover: hover) and (pointer: fine) {
  .sidebar-nav li a.nav-link-bonus:hover {
    background: rgba(201,169,0,0.07);
    color: #5a4800;
  }
  .sidebar-nav li a.nav-link-bonus:hover .nav-icon {
    color: #a08800;
  }
}

/* ── Nav collapsible toggle ──────────────────────────────────────────────── */
.nav-toggle {
  cursor: pointer;
  user-select: none;
  transition: color 0.16s var(--ease-out), opacity 0.16s var(--ease-out);
}

@media (hover: hover) and (pointer: fine) {
  .nav-toggle:hover {
    opacity: 1;
    color: var(--color-primary);
  }
}

/* Chevron SVG rotation */
.nav-chevron {
  display: inline-flex;
  align-items: center;
  color: var(--sidebar-text-muted);
  transition: transform 0.22s var(--ease-out);
  transform: rotate(0deg);
  flex-shrink: 0;
}

.nav-collapsed .nav-chevron { transform: rotate(-90deg); }

.nav-hidden { display: none; }

/* ── Main content area ───────────────────────────────────────────────────── */
.app-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 32px;
  max-width: 100%;
}

.app-content.no-sidebar {
  margin-left: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--header-height) - 64px);
  padding: 40px 20px;
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
.app-footer {
  background: #daeafa;
  color: #1c436f;
  padding: 20px 32px;
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 13px;
  margin-left: var(--sidebar-width);
  border-top: 1px solid #c5ddf5;
}

.app-footer.no-sidebar { margin-left: 0; }

.footer-spacer { flex: 1; }

.footer-link {
  color: #1c436f;
  font-weight: 600;
  transition: color 0.18s var(--ease-out);
}

.footer-link:hover { color: var(--color-primary); }

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: var(--btn-padding);
  border-radius: var(--btn-border-radius);
  font-family: var(--font-family);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-align: center;
  text-decoration: none;
  transition: background 0.18s var(--ease-out),
              box-shadow 0.18s var(--ease-out),
              transform 0.15s var(--ease-out);
  box-shadow: var(--btn-shadow);
}

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

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  width: 100%;
}

.btn-primary:hover {
  background: #2460a0;
  color: #fff;
}

.btn-secondary {
  background: var(--color-cta-green);
  color: #fff;
}

.btn-secondary:hover {
  background: #9daf3c;
  color: #fff;
}

.btn-login {
  background: #b4c648;
  color: #000000;
  width: 100%;
}

.btn-login:hover {
  background: #2c6eb6;
  color: #ffffff;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-radius: var(--btn-border-radius);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.18s var(--ease-out);
  box-shadow: none;
  cursor: pointer;
}

.btn-download:hover {
  background: #c4dff5;
  color: var(--color-primary-dark);
}

/* ── Auth pages ──────────────────────────────────────────────────────────── */
.auth-card {
  width: 100%;
  max-width: 420px;
  background: #daeafa;
  border-radius: 20px;
  padding: 40px;
  box-shadow: var(--card-shadow);
  overflow: hidden;
}

.auth-logo {
  margin: -40px -40px 32px -40px;
  text-align: center;
}

.auth-logo img {
  display: block;
  width: 100%;
  height: auto;
}

.auth-card h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 6px;
  text-align: center;
}

.auth-card .subtitle {
  color: var(--color-muted);
  font-size: 14px;
  text-align: center;
  margin-bottom: 24px;
}

/* ── Forms ───────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }

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

.form-group input {
  width: 100%;
  padding: 11px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: 10px;
  font-family: var(--font-family);
  font-size: 15px;
  color: var(--color-text);
  background: var(--color-bg);
  outline: none;
  transition: border-color 0.18s var(--ease-out);
}

.form-group input:focus { border-color: var(--color-primary); }

/* ── Error / alert ───────────────────────────────────────────────────────── */
.upgrade-wall {
  max-width: 560px;
  margin: 40px auto;
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: 16px;
  padding: 40px 32px;
  text-align: center;
}

.upgrade-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.upgrade-wall h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.upgrade-wall p {
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 28px;
}

.upgrade-wall p strong {
  color: var(--color-text);
  font-family: monospace;
  background: var(--color-primary-light);
  padding: 2px 6px;
  border-radius: 4px;
}

.upgrade-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.upgrade-actions .btn {
  width: 100%;
}

.alert-error {
  background: #fef2f2;
  border: 1.5px solid #fecaca;
  color: #b91c1c;
  padding: 12px 16px;
  border-radius: 10px;
  margin-bottom: 16px;
  font-size: 14px;
  line-height: 1.5;
}

/* ── Dashboard ───────────────────────────────────────────────────────────── */
.page-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 24px;
}

/* ── Welcome block ───────────────────────────────────────────────────────── */
.welcome-block {
  background: #2c6eb6;
  border-radius: 20px;
  padding: 0;
  margin-bottom: 40px;
  overflow: hidden;
}

.welcome-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  padding: 28px 32px 24px;
  position: relative;
}

/* Decorative arc — CSS only, no performance cost */
.welcome-inner::after {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255,255,255,0.04);
  pointer-events: none;
}

.welcome-text {
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
  z-index: 1;
}

.welcome-text .greeting {
  font-size: 10px;
  font-weight: 700;
  color: rgba(255,255,255,0.65);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.welcome-text .name {
  font-size: 24px;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.2;
  letter-spacing: -0.3px;
}

.welcome-text .welcome-sub {
  font-size: 13px;
  color: rgba(255,255,255,0.75);
  font-weight: 400;
}

.welcome-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  position: relative;
  z-index: 1;
}

.welcome-meta .support-info {
  font-size: 11.5px;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.1px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

/* Stat bar */
.welcome-stats {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0 32px;
  border-top: 1px solid rgba(255,255,255,0.1);
  background: rgba(0,0,0,0.1);
}

.welcome-stat {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 0;
  flex: 0 0 auto;
}

.welcome-stat-divider {
  width: 1px;
  height: 28px;
  background: rgba(255,255,255,0.15);
  margin: 0 24px;
  flex-shrink: 0;
}

.stat-value {
  font-size: 17px;
  font-weight: 700;
  color: #ffffff;
  display: inline-flex;
  align-items: center;
}

.stat-label {
  font-size: 11px;
  font-weight: 500;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.2px;
}

/* Tariff badge */
.tariff-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 14px;
  border-radius: 50px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.tariff-badge.vip {
  background: #fef3c7;
  color: #92400e;
  border: 1px solid #fcd34d;
}

.tariff-badge.premium {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border: 1px solid #b8d8f5;
}

.tariff-badge.basic {
  background: #f3f4f6;
  color: var(--color-muted);
  border: 1px solid var(--color-border);
}

/* User info card */
.user-card {
  background: var(--color-bg);
  border-radius: var(--card-border-radius);
  padding: 20px 24px;
  margin-bottom: 28px;
  box-shadow: 0 1px 6px rgba(0,0,0,0.08);
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  border: 1px solid #e8f0f9;
}

.user-card-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.user-card-item .label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-muted);
  font-weight: 600;
}

.user-card-item .value {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary-dark);
}

/* ── Section headers ─────────────────────────────────────────────────────── */
.section-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
}

.section-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: -0.2px;
  margin-bottom: 0;
  display: inline-flex;
  align-items: center;
}

.section-title span.section-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  margin-right: 9px;
  flex-shrink: 0;
}

.section-title.plates-title span.section-dot {
  background: var(--color-cta-green);
}

.section-count {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--color-muted);
  letter-spacing: 0.3px;
}

.section-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

/* ── View slider toggle ──────────────────────────────────────────────────── */
.view-slider {
  position: relative;
  display: inline-flex;
  align-items: center;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 3px;
}

.view-slider-btn {
  position: relative;
  z-index: 1;
  border: none;
  background: transparent;
  padding: 4px 13px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 16px;
  cursor: pointer;
  color: var(--color-muted);
  transition: color 0.2s var(--ease-out);
  white-space: nowrap;
  line-height: 1.4;
}

.view-slider-btn.active {
  color: var(--color-primary-dark);
}

.view-slider-pill {
  position: absolute;
  top: 3px;
  left: 3px;
  height: calc(100% - 6px);
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 1px 4px rgba(44,110,182,0.15);
  transition: transform 0.22s var(--ease-out), width 0.22s var(--ease-out);
  pointer-events: none;
}

/* ── Plate thumbnail (hidden in card view) ───────────────────────────────── */
.plate-thumb {
  display: none;
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: calc(var(--card-border-radius) - 4px) calc(var(--card-border-radius) - 4px) 0 0;
  background: var(--color-bg-alt);
}

/* ── Thumbnail view ──────────────────────────────────────────────────────── */
.cards-grid.view-thumbnails {
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

.cards-grid.view-thumbnails .content-card.plate-card {
  padding: 0 0 12px 0;
  gap: 6px;
  overflow: hidden;
}

.cards-grid.view-thumbnails .plate-thumb {
  display: block;
}

.cards-grid.view-thumbnails .card-icon,
.cards-grid.view-thumbnails .card-number {
  display: none;
}

.cards-grid.view-thumbnails .card-label {
  padding: 0 12px;
  font-size: 12px;
}

/* Shimmer placeholder while image loads */
.plate-thumb.loading {
  background: linear-gradient(90deg, #e8f0f8 25%, #daeafa 50%, #e8f0f8 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
}

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

/* ── Lessons grid ────────────────────────────────────────────────────────── */
.lessons-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-template-rows: auto auto;
  gap: 12px;
  margin-bottom: 40px;
}

.lesson-card-featured {
  grid-column: span 2;
  grid-row: span 2;
}

.lesson-card-regular {
  grid-column: span 2;
}

.lesson-card-bonus {
  grid-column: span 2;
}

/* Uniform plates grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
  margin-bottom: 44px;
}

/* ── Content card base ───────────────────────────────────────────────────── */
.content-card {
  background: #ffffff;
  border-radius: var(--card-border-radius);
  padding: 18px 16px 16px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04), 0 2px 8px rgba(44,110,182,0.04);
  text-decoration: none;
  color: var(--color-text);
  font-weight: 600;
  font-size: 14px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  border: 1px solid #e8eef8;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  /* Entry animation */
  animation: card-enter 0.36s var(--ease-out) both;
  transition: box-shadow 0.22s var(--ease-out),
              transform 0.22s var(--ease-out),
              border-color 0.22s var(--ease-out);
}

@keyframes card-enter {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Stagger for lesson cards */
.lessons-grid .content-card:nth-child(1) { animation-delay: 0ms; }
.lessons-grid .content-card:nth-child(2) { animation-delay: 45ms; }
.lessons-grid .content-card:nth-child(3) { animation-delay: 90ms; }
.lessons-grid .content-card:nth-child(4) { animation-delay: 135ms; }
.lessons-grid .content-card:nth-child(5) { animation-delay: 180ms; }
.lessons-grid .content-card:nth-child(6) { animation-delay: 225ms; }

/* Ghost number watermark */
.content-card .card-number {
  font-size: 52px;
  font-weight: 700;
  line-height: 1;
  position: absolute;
  bottom: -6px;
  right: 10px;
  color: var(--color-primary);
  opacity: 0.05;
  pointer-events: none;
  letter-spacing: -3px;
  user-select: none;
  transition: opacity 0.22s var(--ease-out);
}

.content-card .card-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary-dark);
  letter-spacing: -0.1px;
  transition: color 0.18s var(--ease-out);
}

.content-card .card-sublabel {
  font-size: 11px;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.1px;
  margin-top: -3px;
  transition: color 0.18s var(--ease-out);
}

.content-card .card-icon {
  display: inline-flex;
  align-items: center;
  color: var(--color-primary);
  transition: color 0.18s var(--ease-out), transform 0.22s var(--ease-out);
  flex-shrink: 0;
}

@media (hover: hover) and (pointer: fine) {
  .content-card:hover {
    box-shadow: 0 8px 24px rgba(44,110,182,0.12), 0 2px 6px rgba(44,110,182,0.06);
    transform: translateY(-3px);
    border-color: #c8dcf4;
  }

  .content-card:hover .card-number { opacity: 0.09; }
  .content-card:hover .card-label { color: var(--color-primary); }
  .content-card:hover .card-icon { color: var(--color-accent-blue); transform: scale(1.08); }
}

/* ── Featured lesson card ────────────────────────────────────────────────── */
.content-card.lesson-featured {
  background: var(--color-primary-dark);
  border-color: transparent;
  padding: 24px 22px 22px;
  justify-content: flex-end;
  min-height: 176px;
}

.content-card.lesson-featured .card-label {
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
}

.content-card.lesson-featured .card-sublabel {
  color: rgba(255,255,255,0.6);
}

.content-card.lesson-featured .card-icon {
  color: rgba(180,198,72,0.9);
}

.content-card.lesson-featured .card-number {
  color: rgba(255,255,255,1);
  opacity: 0.05;
  font-size: 76px;
  bottom: -10px;
  right: 8px;
}

@media (hover: hover) and (pointer: fine) {
  .content-card.lesson-featured:hover {
    box-shadow: 0 12px 36px rgba(28,67,111,0.22);
    transform: translateY(-3px);
    border-color: transparent;
  }

  .content-card.lesson-featured:hover .card-label { color: #daeafa; }
  .content-card.lesson-featured:hover .card-icon { color: var(--color-cta-green); transform: scale(1.1); }
  .content-card.lesson-featured:hover .card-number { opacity: 0.09; }
}

/* ── Bonus card ──────────────────────────────────────────────────────────── */
.content-card.lesson-bonus {
  background: #faf8ec;
  border-color: #e6de9a;
}

.content-card.lesson-bonus .card-label {
  color: #6b5800;
}

.content-card.lesson-bonus .card-sublabel {
  color: rgba(107,88,0,0.6);
}

.content-card.lesson-bonus .card-icon {
  color: #c9a900;
}

.content-card.lesson-bonus .card-number {
  color: #c9a900;
}

@media (hover: hover) and (pointer: fine) {
  .content-card.lesson-bonus:hover {
    box-shadow: 0 8px 24px rgba(180,160,0,0.12);
    transform: translateY(-3px);
    border-color: #d4c47a;
  }

  .content-card.lesson-bonus:hover .card-label { color: #4a3c00; }
  .content-card.lesson-bonus:hover .card-icon { color: #a08800; transform: scale(1.1); }
}

/* ── Plate card ──────────────────────────────────────────────────────────── */
.content-card.plate-card {
  border-color: #e2efd5;
}

.content-card.plate-card .card-number {
  color: var(--color-cta-green);
  opacity: 0.07;
}

.content-card.plate-card .card-icon { color: var(--color-cta-green); }
.content-card.plate-card .card-label { color: #3a5a1c; }

@media (hover: hover) and (pointer: fine) {
  .content-card.plate-card:hover {
    box-shadow: 0 8px 24px rgba(180,198,72,0.14), 0 2px 6px rgba(180,198,72,0.07);
    transform: translateY(-3px);
    border-color: #c8df9a;
  }

  .content-card.plate-card:hover .card-number { opacity: 0.11; }
  .content-card.plate-card:hover .card-label { color: #5a8a22; }
  .content-card.plate-card:hover .card-icon { color: #9daf3c; transform: scale(1.08); }
}

/* Plate card stagger — cap at 12 */
.cards-grid .content-card:nth-child(1)  { animation-delay: 0ms; }
.cards-grid .content-card:nth-child(2)  { animation-delay: 28ms; }
.cards-grid .content-card:nth-child(3)  { animation-delay: 56ms; }
.cards-grid .content-card:nth-child(4)  { animation-delay: 84ms; }
.cards-grid .content-card:nth-child(5)  { animation-delay: 112ms; }
.cards-grid .content-card:nth-child(6)  { animation-delay: 140ms; }
.cards-grid .content-card:nth-child(7)  { animation-delay: 168ms; }
.cards-grid .content-card:nth-child(8)  { animation-delay: 196ms; }
.cards-grid .content-card:nth-child(9)  { animation-delay: 224ms; }
.cards-grid .content-card:nth-child(10) { animation-delay: 252ms; }
.cards-grid .content-card:nth-child(11) { animation-delay: 280ms; }
.cards-grid .content-card:nth-child(12) { animation-delay: 308ms; }

/* ── Lesson page ─────────────────────────────────────────────────────────── */
.lesson-page {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lesson-page h1,
.lesson-page .pdf-downloads,
.lesson-page .sport-videos {
  width: 100%;
  max-width: 860px;
}

.lesson-page h1 { margin-bottom: 20px; }

.video-container {
  width: 100%;
  max-width: 860px;
  margin-bottom: 24px;
  border-radius: var(--card-border-radius);
  overflow: hidden;
  background: #000;
  box-shadow: var(--card-shadow);
}

video {
  width: 100%;
  display: block;
}

.pdf-downloads { margin-top: 24px; }

.pdf-downloads .section-title { margin-bottom: 12px; }

.pdf-downloads ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ── Sport videos grid ───────────────────────────────────────────────────── */
.sport-videos { margin-top: 32px; }
.sport-videos .section-title { margin-bottom: 16px; }

.sport-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.sport-item {
  background: var(--color-bg);
  border-radius: var(--card-border-radius);
  padding: 14px;
  box-shadow: var(--card-shadow);
}

.sport-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-muted);
  margin-bottom: 8px;
}

.sport-item video {
  width: 100%;
  border-radius: 10px;
}

/* ── Plate page ──────────────────────────────────────────────────────────── */
.plate-page {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.plate-page h1 {
  width: 100%;
  max-width: 680px;
  text-align: left;
  margin-bottom: 20px;
}

.plate-image {
  width: 100%;
  max-width: 680px;
  display: flex;
  justify-content: center;
}

.plate-image img {
  max-width: 680px;
  width: 100%;
  border-radius: var(--card-border-radius);
  box-shadow: var(--card-shadow);
  margin-bottom: 24px;
  display: block;
}

.plate-description {
  max-width: 680px;
  width: 100%;
  line-height: 1.7;
  color: var(--color-text);
  font-size: 15px;
  text-align: left;
}

/* ── Chat page ───────────────────────────────────────────────────────────── */
.chat-page .page-title { margin-bottom: 8px; }
.chat-page .subtitle { color: var(--color-muted); margin-bottom: 24px; font-size: 15px; }

/* ── Misc ────────────────────────────────────────────────────────────────── */
.placeholder {
  color: var(--color-muted);
  font-style: italic;
  margin: 24px 0;
}

/* ── Mobile ──────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .hamburger { display: flex; }

  .header-user .header-user-info { display: none; }

  .sidebar {
    transform: translateX(-100%);
    box-shadow: none;
    /* On mobile, sidebar is full-height overlay */
    z-index: 150;
  }

  .sidebar.open {
    transform: translateX(0);
    box-shadow: 4px 0 32px rgba(44,110,182,0.12);
  }

  .sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(28,67,111,0.35);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    z-index: 140;
  }

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

  .app-content {
    margin-left: 0;
    padding: 20px 16px;
  }

  .app-footer {
    margin-left: 0;
    flex-wrap: wrap;
    gap: 12px;
    padding: 20px 16px;
  }

  .auth-card { padding: 28px 20px; }

  .welcome-inner {
    padding: 24px 20px 20px;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .welcome-meta { align-items: flex-start; }

  .welcome-stats {
    padding: 0 20px;
  }

  .welcome-stat-divider {
    margin: 0 16px;
  }

  /* On mobile lessons collapse to 2-col */
  .lessons-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .lesson-card-featured {
    grid-column: span 2;
    grid-row: span 1;
  }

  .lesson-card-regular,
  .lesson-card-bonus {
    grid-column: span 1;
  }

  .cards-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .welcome-text .name { font-size: 20px; }

  .welcome-stats {
    flex-wrap: wrap;
    gap: 8px;
  }

  .welcome-stat-divider {
    display: none;
  }
}

/* ── Medium breakpoint ───────────────────────────────────────────────────── */
@media (max-width: 1100px) and (min-width: 769px) {
  .lessons-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .lesson-card-featured {
    grid-column: span 2;
    grid-row: span 1;
  }

  .lesson-card-regular,
  .lesson-card-bonus {
    grid-column: span 2;
  }
}

/* ── Focus states (keyboard nav) ─────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

.sidebar-nav li a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}