@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ─── Tokens ─── */
:root {
  --bg: #ffffff;
  --bg2: #f8fafc;
  --bg3: #f1f5f9;
  --text: #0f172a;
  --text-muted: #475569;
  --text-dim: #94a3b8;
  --border: #e2e8f0;
  --shadow: 0 1px 3px rgba(0, 0, 0, .08), 0 1px 2px rgba(0, 0, 0, .05);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, .08);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-pill: 100px;

  /* Brand */
  --indigo: #6366f1;
  --indigo-dark: #4f46e5;
  --indigo-light: #eef2ff;

  /* Course colors */
  --c-matematyka: #3b82f6;
  --c-angielski: #f59e0b;
  --c-minecraft: #16a34a;
  --c-programowanie: #6366f1;
  --c-ai: #8b5cf6;
  --c-rysunek: #f97316;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

button {
  cursor: pointer;
  font-family: inherit;
}

input,
textarea,
select {
  font-family: inherit;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar {
  width: 5px;
}

::-webkit-scrollbar-track {
  background: var(--bg2);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

/* ─── Layout ─── */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* ─── Navbar ─── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text);
}

.logo .accent {
  color: var(--indigo);
}

.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}

.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 14px;
  transition: color .15s;
}

.nav-links a:hover {
  color: var(--text);
}

.nav-cta {
  background: var(--indigo) !important;
  color: #fff !important;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-weight: 600 !important;
  font-size: 14px !important;
  transition: background .15s !important;
}

.nav-cta:hover {
  background: var(--indigo-dark) !important;
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  border: none;
  transition: all .15s;
  cursor: pointer;
}

.btn-primary {
  background: var(--indigo);
  color: #fff;
}

.btn-primary:hover {
  background: var(--indigo-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, .25);
}

.btn-secondary {
  background: var(--bg3);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg2);
  border-color: #cbd5e1;
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--indigo);
  color: var(--indigo);
}

.btn-outline:hover {
  background: var(--indigo-light);
}

.btn-danger {
  background: #fef2f2;
  color: #ef4444;
  border: 1px solid #fecaca;
}

.btn-danger:hover {
  background: #fee2e2;
}

.btn-sm {
  padding: 7px 14px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
}

.btn-colored {
  color: #fff;
}

.btn-colored:hover {
  opacity: .9;
  transform: translateY(-1px);
}

.w-full {
  width: 100%;
  justify-content: center;
}

/* ─── Cards ─── */
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}

.card-hover {
  transition: all .2s;
}

.card-hover:hover {
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
  transform: translateY(-2px);
}

/* ─── Badges ─── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 600;
}

.badge-indigo {
  background: var(--indigo-light);
  color: var(--indigo);
}

.badge-green {
  background: #f0fdf4;
  color: #16a34a;
}

.badge-amber {
  background: #fffbeb;
  color: #b45309;
}

.badge-blue {
  background: #eff6ff;
  color: #2563eb;
}

.badge-violet {
  background: #f5f3ff;
  color: #7c3aed;
}

.badge-orange {
  background: #fff7ed;
  color: #ea580c;
}

.badge-gray {
  background: var(--bg3);
  color: var(--text-muted);
}

/* ─── Hero ─── */
.hero {
  padding: 140px 0 80px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--indigo-light);
  color: var(--indigo);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -2px;
  color: var(--text);
  margin-bottom: 20px;
}

.hero h1 em {
  font-style: normal;
  color: var(--indigo);
}

.hero>.container>p {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ─── Section heading ─── */
.section-eyebrow {
  font-size: 12px;
  font-weight: 700;
  color: var(--indigo);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.1;
  margin-bottom: 12px;
}

.section-sub {
  color: var(--text-muted);
  font-size: 16px;
  max-width: 560px;
  line-height: 1.7;
}

/* ─── Divider ─── */
.divider {
  height: 1px;
  background: var(--border);
  margin: 0;
}

/* ─── Course cards ─── */
.course-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all .2s;
}

.course-card:hover {
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
  transform: translateY(-3px);
}

.course-card-top {
  padding: 28px;
  flex: 1;
}

.course-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}

.course-card-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.course-card-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

.course-card-footer {
  padding: 16px 28px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg2);
}

.course-price {
  font-size: 18px;
  font-weight: 800;
}

.course-type-badge {
  font-size: 11px;
  font-weight: 600;
}

/* ─── Steps ─── */
.steps {
  display: flex;
  gap: 0;
}

.step {
  flex: 1;
  padding: 32px;
  border-right: 1px solid var(--border);
  position: relative;
}

.step:last-child {
  border-right: none;
}

.step-num {
  width: 36px;
  height: 36px;
  background: var(--indigo);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 16px;
}

.step-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}

.step-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ─── Pricing ─── */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.pricing-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  background: var(--bg);
  position: relative;
}

.pricing-card.featured {
  border-color: var(--indigo);
  box-shadow: 0 0 0 3px var(--indigo-light);
}

.pricing-card.featured::before {
  content: 'Polecane';
  position: absolute;
  top: -12px;
  left: 24px;
  background: var(--indigo);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
}

.price-num {
  font-size: 44px;
  font-weight: 900;
  letter-spacing: -2px;
}

.price-period {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 2px;
}

.price-features {
  list-style: none;
  margin: 24px 0;
}

.price-features li {
  padding: 8px 0;
  font-size: 14px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 8px;
  align-items: baseline;
}

.price-features li::before {
  content: '✓';
  color: var(--indigo);
  font-weight: 700;
  flex-shrink: 0;
}

.price-features li:last-child {
  border-bottom: none;
}

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

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

.form-control {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  transition: all .15s;
  outline: none;
}

.form-control:focus {
  border-color: var(--indigo);
  box-shadow: 0 0 0 3px var(--indigo-light);
}

.form-control::placeholder {
  color: var(--text-dim);
}

.form-control option {
  background: #fff;
}

textarea.form-control {
  resize: vertical;
}

/* ─── Referral box ─── */
.referral-box {
  background: linear-gradient(135deg, #eef2ff, #f5f3ff);
  border: 1px solid #c7d2fe;
  border-radius: var(--radius);
  padding: 24px;
}

.referral-code {
  font-size: 28px;
  font-weight: 900;
  letter-spacing: 4px;
  color: var(--indigo);
  font-family: monospace;
}

.referral-link-input {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text-muted);
  width: 100%;
  margin-top: 10px;
  cursor: pointer;
}

/* ─── Course page hero ─── */
.course-hero {
  padding: 120px 0 60px;
}

.course-hero-grid {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 64px;
  align-items: start;
}

.course-badge {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
  display: inline-block;
}

.course-hero h1 {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 900;
  letter-spacing: -1.5px;
  line-height: 1.1;
  margin-bottom: 16px;
}

.course-hero p.lead {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
}

.benefit-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.benefit-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 15px;
}

.benefit-list li .icon {
  font-size: 18px;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ─── Registration sidebar card ─── */
.reg-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 88px;
}

.reg-card .price-tag {
  font-size: 36px;
  font-weight: 900;
  letter-spacing: -1px;
}

.reg-card .price-per {
  font-size: 14px;
  color: var(--text-muted);
  margin-left: 4px;
}

/* ─── Feature grid ─── */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.feature-item {
  background: var(--bg);
  padding: 28px;
}

.feature-icon {
  font-size: 28px;
  margin-bottom: 12px;
}

.feature-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
}

.feature-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ─── Project showcase ─── */
.project-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.project-emoji {
  font-size: 56px;
  flex-shrink: 0;
}

.project-title {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.project-desc {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
}

/* ─── Admin ─── */
.admin-layout {
  display: flex;
  min-height: 100vh;
  background: #0f172a;
  color: #e2e8f0;
}

.sidebar {
  width: 240px;
  background: #1e293b;
  border-right: 1px solid #334155;
  padding: 20px 0;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  z-index: 100;
}

.sidebar-logo {
  padding: 0 20px 20px;
  border-bottom: 1px solid #334155;
  margin-bottom: 12px;
}

.sidebar-logo a {
  font-size: 18px;
  font-weight: 800;
  color: #f1f5f9;
}

.sidebar-logo a .accent {
  color: #6366f1;
}

.sidebar-nav {
  flex: 1;
  padding: 0 8px;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  color: #94a3b8;
  font-size: 14px;
  font-weight: 500;
  transition: all .15s;
  margin-bottom: 2px;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  background: rgba(99, 102, 241, .15);
  color: #6366f1;
}

.sidebar-nav a .icon {
  font-size: 16px;
}

.admin-main {
  margin-left: 240px;
  flex: 1;
  padding: 28px;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}

.admin-header h1 {
  font-size: 22px;
  font-weight: 800;
  color: #f1f5f9;
}

.admin-card {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 20px;
}

.admin-stat {
  text-align: center;
}

.admin-stat-num {
  font-size: 32px;
  font-weight: 900;
  color: #6366f1;
}

.admin-stat-label {
  font-size: 13px;
  color: #64748b;
  margin-top: 4px;
}

/* ─── Table (admin) ─── */
.table-wrap {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 10px;
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  padding: 12px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  border-bottom: 1px solid #334155;
  white-space: nowrap;
}

td {
  padding: 12px 16px;
  font-size: 13px;
  border-bottom: 1px solid #1e293b;
  color: #cbd5e1;
  vertical-align: middle;
}

tr:hover td {
  background: rgba(255, 255, 255, .02);
}

tr:last-child td {
  border-bottom: none;
}

/* ─── Modal ─── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .5);
  backdrop-filter: blur(3px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 12px;
  padding: 28px;
  max-width: 520px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(12px);
  transition: transform .2s;
  color: #e2e8f0;
}

.modal-overlay.open .modal {
  transform: none;
}

.modal .form-control {
  background: #0f172a;
  border-color: #334155;
  color: #e2e8f0;
}

.modal .form-control:focus {
  border-color: #6366f1;
}

.modal .form-label {
  color: #94a3b8;
}

.modal-title {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 20px;
  color: #f1f5f9;
}

/* ─── Toast ─── */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 18px;
  font-size: 14px;
  font-weight: 500;
  max-width: 300px;
  animation: toastIn .25s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--shadow-md);
}

.toast.success {
  border-left: 3px solid #16a34a;
}

.toast.error {
  border-left: 3px solid #ef4444;
}

@keyframes toastIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }

  to {
    transform: none;
    opacity: 1;
  }
}

/* ─── Spinner ─── */
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(0, 0, 0, .1);
  border-top-color: var(--indigo);
  border-radius: 50%;
  animation: spin .6s linear infinite;
}

.spinner-white {
  border-color: rgba(255, 255, 255, .25);
  border-top-color: #fff;
}

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

/* ─── Empty state ─── */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state .emoji {
  font-size: 48px;
  margin-bottom: 12px;
}

/* ─── Footer ─── */
footer {
  border-top: 1px solid var(--border);
  padding: 48px 0 32px;
  background: var(--bg2);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 10px;
  max-width: 260px;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
  color: var(--text-dim);
}

.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 10px;
  transition: color .15s;
}

.footer-col a:hover {
  color: var(--text);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-dim);
  font-size: 13px;
  flex-wrap: wrap;
  gap: 8px;
}

/* ─── Utility ─── */
.text-center {
  text-align: center;
}

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

.hidden {
  display: none !important;
}

.mt-4 {
  margin-top: 4px;
}

.mt-8 {
  margin-top: 8px;
}

.mt-12 {
  margin-top: 12px;
}

.mt-16 {
  margin-top: 16px;
}

.mt-24 {
  margin-top: 24px;
}

.mt-32 {
  margin-top: 32px;
}

.mt-48 {
  margin-top: 48px;
}

.mb-8 {
  margin-bottom: 8px;
}

.mb-16 {
  margin-bottom: 16px;
}

.mb-24 {
  margin-bottom: 24px;
}

.mb-32 {
  margin-bottom: 32px;
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.gap-8 {
  gap: 8px;
}

.gap-12 {
  gap: 12px;
}

.gap-16 {
  gap: 16px;
}

.inline-flex {
  display: inline-flex;
  align-items: center;
}

/* ─── Responsive ─── */
@media (max-width: 960px) {
  .course-hero-grid {
    grid-template-columns: 1fr;
  }

  .reg-card {
    position: static;
  }

  .grid-3,
  .pricing-grid {
    grid-template-columns: 1fr 1fr;
  }

  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }

  .steps {
    flex-direction: column;
  }

  .step {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .step:last-child {
    border-bottom: none;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {

  .grid-2,
  .grid-3,
  .grid-4,
  .pricing-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .nav-links {
    display: none;
  }

  .hero h1 {
    letter-spacing: -1px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .admin-layout {
    flex-direction: column;
  }

  .sidebar {
    position: relative;
    width: 100%;
    height: auto;
  }

  .admin-main {
    margin-left: 0;
  }
}