/* ===== iSkohm Robot Club — style.css ===== */

:root {
  --bg:        #0d1117;
  --bg2:       #161b22;
  --bg3:       #21262d;
  --blue:      #00b4d8;
  --green:     #39d353;
  --purple:    #7c3aed;
  --orange:    #f97316;
  --white:     #e6edf3;
  --muted:     #8b949e;
  --border:    #30363d;
  --danger:    #f85149;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== NAV ===== */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13,17,23,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 56px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--white);
  text-decoration: none;
}

.nav-logo:hover { text-decoration: none; }

.logo-text {
  background: linear-gradient(135deg, var(--blue), var(--green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
}

.nav-links {
  display: flex;
  gap: 0.25rem;
  list-style: none;
  flex: 1;
}

.nav-links a {
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  color: var(--muted);
  font-size: 0.9rem;
  transition: color 0.15s, background 0.15s;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--white);
  background: var(--bg3);
  text-decoration: none;
}

.nav-badge {
  font-size: 0.7rem;
  background: var(--purple);
  color: white;
  padding: 0.1rem 0.4rem;
  border-radius: 999px;
  margin-left: 0.3rem;
  vertical-align: middle;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  overflow: hidden;
  padding: 6rem 1.5rem 4rem;
  text-align: center;
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#circuit-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.35;
  pointer-events: none;
}

.hero-content { position: relative; z-index: 1; max-width: 700px; }

.hero-logo {
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: -1px;
  margin-bottom: 0.25rem;
}

.hero-tagline {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--muted);
  margin-bottom: 2rem;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.stats-bar {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
  padding: 1rem 2rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-size: 0.95rem;
}

.stat {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
}

.stat strong { color: var(--green); font-size: 1.3rem; font-weight: 700; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  border: none;
  text-decoration: none;
}

.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn-primary {
  background: var(--blue);
  color: #000;
}
.btn-primary:hover { background: #22d3f8; box-shadow: 0 0 20px rgba(0,180,216,0.4); }

.btn-secondary {
  background: var(--bg3);
  color: var(--white);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--bg2); border-color: var(--blue); }

.btn-green {
  background: var(--green);
  color: #000;
}
.btn-green:hover { background: #4ade80; box-shadow: 0 0 20px rgba(57,211,83,0.4); }

.btn-purple {
  background: var(--purple);
  color: white;
}
.btn-purple:hover { background: #9333ea; box-shadow: 0 0 20px rgba(124,58,237,0.4); }

.btn-sm {
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem;
}

/* ===== CARDS ===== */
.section {
  padding: 3rem 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.section-sub {
  color: var(--muted);
  margin-bottom: 2rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.card:hover {
  border-color: var(--blue);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,180,216,0.1);
}

.card.coming-soon {
  opacity: 0.5;
  pointer-events: none;
}

.card-num {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card-emoji { font-size: 2rem; }

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
}

.card-desc {
  font-size: 0.875rem;
  color: var(--muted);
  flex: 1;
}

.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-debutant { background: rgba(57,211,83,0.15); color: var(--green); }
.badge-intermediaire { background: rgba(0,180,216,0.15); color: var(--blue); }
.badge-avance { background: rgba(124,58,237,0.15); color: #a78bfa; }
.badge-coming { background: rgba(139,148,158,0.15); color: var(--muted); }

/* ===== LEVEL BAND ===== */
.level-band {
  padding: 0.75rem 1.5rem;
  background: linear-gradient(90deg, rgba(0,180,216,0.08), transparent);
  border-left: 3px solid var(--blue);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--muted);
}

/* ===== LESSON PAGE ===== */
.lesson-layout {
  max-width: 860px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--white); }

.lesson-header {
  margin-bottom: 2.5rem;
}

.lesson-emoji { font-size: 3.5rem; line-height: 1; margin-bottom: 0.5rem; }

.lesson-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.lesson-section {
  margin-bottom: 2.5rem;
}

.lesson-section h2 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.lesson-section h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--blue);
  margin: 1.25rem 0 0.5rem;
}

.lesson-section p {
  color: var(--muted);
  margin-bottom: 0.75rem;
}

.lesson-section ul, .lesson-section ol {
  padding-left: 1.5rem;
  color: var(--muted);
}

.lesson-section li { margin-bottom: 0.4rem; }
.lesson-section li strong { color: var(--white); }

/* ===== CODE BLOCKS ===== */
.code-block {
  background: #010409;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin: 1rem 0;
  font-family: 'Cascadia Code', 'Fira Code', 'Consolas', 'Courier New', monospace;
  font-size: 0.875rem;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 1rem;
  background: var(--bg3);
  border-bottom: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--muted);
}

.code-block-lang {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.lang-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
}

.copy-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.7rem;
  cursor: pointer;
  transition: all 0.15s;
}

.copy-btn:hover { color: var(--white); border-color: var(--blue); }

.code-content {
  padding: 1rem 1.25rem;
  overflow-x: auto;
  line-height: 1.7;
}

code.python { display: block; white-space: pre; }

/* ===== SYNTAX HIGHLIGHTING ===== */
.kw  { color: var(--blue); font-weight: 600; }
.fn  { color: var(--green); }
.str { color: var(--orange); }
.cm  { color: #6e7681; font-style: italic; }
.num { color: #a78bfa; }
.cls { color: #fbbf24; }

/* ===== INFO BOXES ===== */
.info-box {
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin: 1rem 0;
  display: flex;
  gap: 0.75rem;
  font-size: 0.9rem;
}

.info-box .icon { font-size: 1.25rem; flex-shrink: 0; }

.info-box.tip {
  background: rgba(57,211,83,0.08);
  border: 1px solid rgba(57,211,83,0.2);
}

.info-box.warning {
  background: rgba(249,115,22,0.08);
  border: 1px solid rgba(249,115,22,0.2);
}

.info-box.info {
  background: rgba(0,180,216,0.08);
  border: 1px solid rgba(0,180,216,0.2);
}

/* ===== À RETENIR ===== */
.retenir-box {
  background: linear-gradient(135deg, rgba(124,58,237,0.1), rgba(0,180,216,0.1));
  border: 1px solid rgba(124,58,237,0.3);
  border-radius: 12px;
  padding: 1.5rem;
}

.retenir-box h2 {
  border-color: rgba(124,58,237,0.3) !important;
}

.retenir-list {
  list-style: none;
  padding: 0;
}

.retenir-list li {
  padding: 0.4rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--muted) !important;
}

.retenir-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--purple);
}

/* ===== EXERCICE CARDS ===== */
.exercice-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.exercice-card .ex-num {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--green);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.exercice-card h3 {
  color: var(--white) !important;
  font-size: 1rem !important;
  margin: 0 0 0.5rem !important;
  border: none !important;
  padding: 0 !important;
}

.exercice-card p { font-size: 0.9rem; }

/* ===== MATERIAL LIST ===== */
.material-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.75rem;
}

.material-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg3);
  border: 1px solid var(--border);
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
}

/* ===== COMPETITION PAGE ===== */
.comp-hero {
  text-align: center;
  padding: 5rem 1.5rem 3rem;
  position: relative;
  overflow: hidden;
}

.comp-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  margin-bottom: 0.75rem;
  background: linear-gradient(135deg, #fbbf24, var(--orange), #f85149);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.comp-hero p {
  font-size: 1.2rem;
  color: var(--muted);
}

.format-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.format-card {
  background: var(--bg2);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

.format-card:hover {
  border-color: var(--orange);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(249,115,22,0.15);
}

.format-card .emoji { font-size: 2.5rem; margin-bottom: 0.75rem; }
.format-card .label {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--orange);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}
.format-card h3 { font-size: 1rem; margin-bottom: 0.5rem; }
.format-card p { font-size: 0.825rem; color: var(--muted); }

.rules-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.rules-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--muted);
}

.rules-list li .rule-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

.countdown-widget {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  padding: 2rem;
}

.countdown-item {
  text-align: center;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.75rem;
  min-width: 90px;
}

.countdown-num {
  font-size: 2.5rem;
  font-weight: 800;
  font-family: monospace;
  background: linear-gradient(135deg, var(--orange), #f85149);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.countdown-label {
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== FOOTER ===== */
footer {
  text-align: center;
  padding: 2rem 1.5rem;
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
  margin-top: 4rem;
}

footer a { color: var(--blue); }

/* ===== PRINT STYLES ===== */
@media print {
  nav, footer, .btn, .copy-btn, .no-print { display: none !important; }
  body { background: white; color: black; }
  .code-block { border: 1px solid #ccc; }
  .code-content { background: #f5f5f5; }
}

/* ===== WORKSHEETS ===== */
.ws-page {
  max-width: 210mm;
  margin: 0 auto;
  padding: 20mm;
  background: white;
  color: black;
  font-family: 'Arial', sans-serif;
}

.ws-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 3px solid #0d1117;
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
}

.ws-logo {
  font-size: 1.5rem;
  font-weight: 900;
  color: #0d1117;
}

.ws-meta { text-align: right; font-size: 0.8rem; color: #555; }

.ws-title {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
  color: #0d1117;
}

.ws-section {
  margin-bottom: 1.5rem;
}

.ws-section-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #555;
  border-bottom: 1px solid #ddd;
  padding-bottom: 0.3rem;
  margin-bottom: 0.75rem;
}

.ws-objectives {
  background: #f8f8f8;
  border-left: 3px solid #00b4d8;
  padding: 0.75rem 1rem;
  border-radius: 0 6px 6px 0;
}

.ws-objectives li { margin-bottom: 0.3rem; font-size: 0.9rem; }

.code-lines {
  border: 1px solid #ccc;
  border-radius: 4px;
  overflow: hidden;
}

.code-line {
  display: flex;
  border-bottom: 1px solid #e5e5e5;
  min-height: 1.8rem;
}

.code-line:last-child { border-bottom: none; }

.code-line-num {
  width: 2.5rem;
  background: #f5f5f5;
  border-right: 1px solid #e5e5e5;
  font-size: 0.7rem;
  color: #999;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: monospace;
  flex-shrink: 0;
}

.notes-lines {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.note-line {
  border-bottom: 1px solid #e0e0e0;
  height: 2rem;
}

.ws-exercise {
  background: #fafafa;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 0.75rem 1rem;
  margin-bottom: 0.75rem;
}

.ws-exercise .ex-title {
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ws-exercise input[type="checkbox"] {
  width: 1rem;
  height: 1rem;
}

.ws-exercise p { font-size: 0.85rem; color: #444; }

.ws-footer {
  text-align: center;
  font-size: 0.75rem;
  color: #999;
  border-top: 1px solid #ddd;
  padding-top: 0.75rem;
  margin-top: 1.5rem;
}

@media print {
  .ws-page {
    padding: 10mm;
    box-shadow: none;
  }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
  nav { gap: 1rem; padding: 0 1rem; }
  .nav-links { display: none; }
  .hero { padding: 3rem 1rem 2rem; min-height: 70vh; }
  .hero-logo { font-size: 2rem; }
  .section { padding: 2rem 1rem; }
  .lesson-layout { padding: 1rem 1rem 3rem; }
  .comp-hero { padding: 3rem 1rem 2rem; }
}

/* ===== CIRCUIT SVG LOGO ===== */
.circuit-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.circuit-svg {
  width: 28px;
  height: 28px;
}

/* ===== GLOW EFFECTS ===== */
.glow-blue { text-shadow: 0 0 20px rgba(0,180,216,0.5); }
.glow-green { text-shadow: 0 0 20px rgba(57,211,83,0.5); }

/* ===== NIVEAU BADGE ===== */
.niveau-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg3);
  border: 1px solid var(--border);
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 1rem;
}

/* ===== LESSON NAV ===== */
.lesson-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.lesson-nav a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg2);
  border: 1px solid var(--border);
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  font-size: 0.9rem;
  color: var(--muted);
  transition: all 0.15s;
}

.lesson-nav a:hover {
  color: var(--white);
  border-color: var(--blue);
  text-decoration: none;
}

/* ===== PROGRESS BAR ===== */
.progress-bar {
  height: 3px;
  background: linear-gradient(90deg, var(--blue), var(--green));
  position: fixed;
  top: 56px;
  left: 0;
  z-index: 99;
  transition: width 0.1s;
}