/* =====================================================
   COURS EMBARQUÉ - STYLESHEET (PREMIUM)
   Créé par Antigravity - 2025
   ===================================================== */

:root {
    /* Hardware Green Theme */
    --primary: #44bd32;
    /* Fresh Green */
    --primary-bright: #4cd137;
    /* Bright Green */

    --secondary: #2f3640;
    --accent: #fbc531;
    /* Electric Yellow */

    --bg: #1e1e1e;
    /* VS Code Dark */
    --bg2: #252526;
    --card: #2d2d2d;

    --text: #f5f6fa;
    --muted: #a4b0be;
    --border: #404040;

    /* Syntax Highlighting */
    --kw: #c678dd;
    --fn: #61afef;
    --str: #98c379;
    --num: #d19a66;
    --c: #5c6370;
    --var: #e06c75;
    --type: #e5c07b;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* === HEADER === */
header {
    position: sticky;
    top: 0;
    background: rgba(30, 30, 30, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
    padding: 12px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-bright);
}

.logo-icon {
    width: 36px;
    height: 36px;
    border: 2px solid var(--primary-bright);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 800;
    letter-spacing: -1px;
}

nav {
    display: flex;
    gap: 4px;
}

nav a {
    color: var(--muted);
    text-decoration: none;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    transition: all 0.2s;
}

nav a:hover {
    background: rgba(76, 209, 55, 0.1);
    color: var(--primary-bright);
}

/* === HERO === */
.hero {
    padding: 80px 0 60px;
    text-align: center;
    border-bottom: 1px solid var(--border);
    background: radial-gradient(circle at center, rgba(68, 189, 50, 0.1) 0%, transparent 60%);
}

.hero-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    display: block;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-bright);
    margin-bottom: 16px;
    text-shadow: 0 0 30px rgba(68, 189, 50, 0.2);
}

/* === UTILS & GRIDS === */
.grid2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.grid3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

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

.dense-list li {
    margin-bottom: 8px;
    position: relative;
    padding-left: 20px;
}

.dense-list li::before {
    content: '•';
    color: var(--primary);
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* === CARDS & BOXES === */
section {
    padding: 60px 0;
    border-bottom: 1px solid var(--border);
    position: relative;
}

.sec-header {
    display: flex;
    gap: 18px;
    margin-bottom: 40px;
}

.sec-num {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), #2d3436);
    color: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.2rem;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.sec-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-bright);
    margin-bottom: 5px;
}

.sec-sub {
    color: var(--muted);
    font-size: 1rem;
}

/* Intro Narrative Box */
.intro-box {
    background: rgba(68, 189, 50, 0.05);
    border-left: 4px solid var(--primary);
    padding: 24px;
    border-radius: 0 8px 8px 0;
    margin-bottom: 30px;
}

.intro-box h4 {
    color: var(--primary-bright);
    margin-bottom: 10px;
    font-size: 1.1rem;
}

/* Analogy Box */
.analogy-box {
    background: var(--bg2);
    border-left: 4px solid var(--accent);
    padding: 20px;
    border-radius: 0 8px 8px 0;
    margin: 20px 0;
    position: relative;
}

.analogy-box h4 {
    color: var(--accent);
    margin-bottom: 8px;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Reference Card */
.ref-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 24px;
    transition: transform 0.2s, border-color 0.2s;
}

.ref-card:hover {
    transform: translateY(-3px);
    border-color: var(--primary);
}

.ref-card h4 {
    color: var(--primary-bright);
    margin-bottom: 15px;
    font-size: 1.1rem;
}

/* Tool/Chip Card */
.tool-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    text-align: center;
}

/* === CODE BLOCKS === */
.code-block {
    background: #1e1e1e;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    margin: 20px 0;
}

pre {
    padding: 20px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    overflow-x: auto;
    color: #dcdcdc;
    margin: 0;
}

.c {
    color: var(--c);
    font-style: italic;
}

.k {
    color: var(--kw);
}

.f {
    color: var(--fn);
}

.s {
    color: var(--str);
}

.n {
    color: var(--num);
}

.t {
    color: var(--type);
}

/* === INTERACTIVE COMPONENTS === */
details {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 10px;
    overflow: hidden;
}

summary {
    padding: 14px 20px;
    cursor: pointer;
    font-weight: 600;
    color: var(--text);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

summary:hover {
    background: rgba(255, 255, 255, 0.02);
}

summary::after {
    content: '+';
    font-weight: bold;
    color: var(--primary);
}

details[open] summary::after {
    transform: rotate(45deg);
}

.details-content {
    padding: 20px;
    border-top: 1px solid var(--border);
    color: var(--muted);
}

/* Virtual Lab / Simulation */
.sim-container {
    background: #111;
    border: 2px solid #333;
    border-radius: 10px;
    padding: 20px;
    margin-top: 20px;
    position: relative;
    font-family: 'JetBrains Mono', monospace;
}

.led {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #333;
    box-shadow: inset 2px 2px 5px rgba(0, 0, 0, 0.5);
    margin: 10px auto;
    transition: all 0.1s;
}

.led.on {
    background: #ff5f56;
    box-shadow: 0 0 10px #ff5f56, 0 0 20px #ff5f56;
}

.push-btn {
    background: #444;
    border: none;
    padding: 10px 20px;
    color: #fff;
    border-radius: 4px;
    cursor: pointer;
    font-family: inherit;
    margin-top: 10px;
}

.push-btn:active {
    background: #666;
    transform: translateY(2px);
}

/* === DIAGRAMS (CSS Drawing) === */
.pin-diagram {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: #222;
    padding: 15px;
    border-radius: 6px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    max-width: 300px;
    margin: 0 auto;
}

.pin-row {
    display: flex;
    justify-content: space-between;
    padding: 4px 8px;
    border-radius: 4px;
}

.pin-row:hover {
    background: rgba(255, 255, 255, 0.05);
}

.pin-l {
    color: #a4b0be;
}

.pin-r {
    color: #a4b0be;
    text-align: right;
}

.pin-box {
    width: 100%;
    border: 2px solid #555;
    height: 20px;
    margin: 2px 0;
    position: relative;
    background: #333;
}

/* === FOOTER === */
footer {
    padding: 40px 0;
    text-align: center;
    color: var(--muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--border);
    margin-top: 60px;
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 10px;
    }

    nav {
        display: none;
    }

    /* Mobile Menu generic hidden */
}