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

/* ======== VARIABLES THEME SOMBRE (defaut) ======== */
:root {
    --bg-primary: #0a0e27;
    --bg-secondary: #16213e;
    --bg-card: rgba(255, 255, 255, 0.04);
    --bg-card-hover: rgba(0, 212, 255, 0.08);
    --bg-modal: rgba(10, 14, 39, 0.96);
    --text-primary: #e2e8f0;
    --text-secondary: #cbd5e1;
    --text-muted: #a0aec0;
    --accent-primary: #00d4ff;
    --accent-secondary: #0099ff;
    --accent-purple: #a855f7;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    --border-color: rgba(0, 212, 255, 0.15);
    --border-hover: rgba(0, 212, 255, 0.3);
    --shadow-color: rgba(0, 212, 255, 0.15);
    --particle-color: 0, 212, 255;
}

/* ======== VARIABLES THEME CLAIR ======== */
[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #e2e8f0;
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-card-hover: rgba(0, 136, 204, 0.08);
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --accent-primary: #0088cc;
    --accent-secondary: #0066aa;
    --accent-purple: #9333ea;
    --accent-green: #059669;
    --border-color: rgba(0, 136, 204, 0.2);
    --border-hover: rgba(0, 136, 204, 0.4);
    --shadow-color: rgba(0, 0, 0, 0.1);
    --particle-color: 0, 136, 204;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
    transition: background 0.3s ease, color 0.3s ease;
}

#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.5;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem 1rem;
    position: relative;
    z-index: 1;
}

/* ======== HEADER ======== */
.header {
    text-align: center;
    margin-bottom: 2.5rem;
    perspective: 1200px;
}

#name3d {
    display: inline-block;
    transform-style: preserve-3d;
    transition: transform 0.12s ease-out;
    will-change: transform;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.8rem;
}

.header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* ======== TABS ======== */
.tabs-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 1rem 2rem;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.tab-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.tab-btn.active {
    background: rgba(0, 212, 255, 0.12);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.2);
}

.tab-icon {
    font-size: 1.3rem;
}

/* ======== SECTIONS ======== */
.section-content {
    display: none;
    animation: fadeIn 0.5s ease;
}

.section-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ======== STACKS GRID ======== */
.stacks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.stack-category {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    transition: all 0.35s ease;
}

.stack-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 212, 255, 0.15);
}

/* Couleurs par categorie */
.frontend-stack { border-color: rgba(0, 212, 255, 0.3); }
.frontend-stack:hover { border-color: rgba(0, 212, 255, 0.6); box-shadow: 0 12px 30px rgba(0, 212, 255, 0.2); }
.frontend-stack .stack-icon { color: #00d4ff; }
.frontend-stack .tech-item { border-color: rgba(0, 212, 255, 0.2); }
.frontend-stack .tech-item:hover { border-color: rgba(0, 212, 255, 0.4); background: rgba(0, 212, 255, 0.1); }

.backend-stack { border-color: rgba(168, 85, 247, 0.3); }
.backend-stack:hover { border-color: rgba(168, 85, 247, 0.6); box-shadow: 0 12px 30px rgba(168, 85, 247, 0.2); }
.backend-stack .stack-icon { color: #a855f7; }
.backend-stack .tech-item { border-color: rgba(168, 85, 247, 0.2); }
.backend-stack .tech-item:hover { border-color: rgba(168, 85, 247, 0.4); background: rgba(168, 85, 247, 0.1); }

.database-stack { border-color: rgba(16, 185, 129, 0.3); }
.database-stack:hover { border-color: rgba(16, 185, 129, 0.6); box-shadow: 0 12px 30px rgba(16, 185, 129, 0.2); }
.database-stack .stack-icon { color: #10b981; }
.database-stack .tech-item { border-color: rgba(16, 185, 129, 0.2); }
.database-stack .tech-item:hover { border-color: rgba(16, 185, 129, 0.4); background: rgba(16, 185, 129, 0.1); }

.devops-stack { border-color: rgba(245, 158, 11, 0.3); }
.devops-stack:hover { border-color: rgba(245, 158, 11, 0.6); box-shadow: 0 12px 30px rgba(245, 158, 11, 0.2); }
.devops-stack .stack-icon { color: #f59e0b; }
.devops-stack .tech-item { border-color: rgba(245, 158, 11, 0.2); }
.devops-stack .tech-item:hover { border-color: rgba(245, 158, 11, 0.4); background: rgba(245, 158, 11, 0.1); }

.security-stack { border-color: rgba(239, 68, 68, 0.3); }
.security-stack:hover { border-color: rgba(239, 68, 68, 0.6); box-shadow: 0 12px 30px rgba(239, 68, 68, 0.2); }
.security-stack .stack-icon { color: #ef4444; }
.security-stack .tech-item { border-color: rgba(239, 68, 68, 0.2); }
.security-stack .tech-item:hover { border-color: rgba(239, 68, 68, 0.4); background: rgba(239, 68, 68, 0.1); }

.tools-stack { border-color: rgba(99, 102, 241, 0.3); }
.tools-stack:hover { border-color: rgba(99, 102, 241, 0.6); box-shadow: 0 12px 30px rgba(99, 102, 241, 0.2); }
.tools-stack .stack-icon { color: #6366f1; }
.tools-stack .tech-item { border-color: rgba(99, 102, 241, 0.2); }
.tools-stack .tech-item:hover { border-color: rgba(99, 102, 241, 0.4); background: rgba(99, 102, 241, 0.1); }

.stack-header {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 1.2rem;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid var(--border-color);
}

.stack-icon {
    font-size: 1.8rem;
}

.stack-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.tech-item {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.tech-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

.tech-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* ======== SECTION BTS ======== */
.bts-intro {
    text-align: center;
    margin-bottom: 2rem;
}

.bts-intro p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.competence-block {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    margin-bottom: 1.5rem;
    overflow: hidden;
    transition: all 0.3s ease;
}

.competence-block:hover {
    border-color: var(--border-hover);
    box-shadow: 0 8px 24px rgba(0, 212, 255, 0.1);
}

.slam-block {
    border-color: rgba(168, 85, 247, 0.3);
}

.slam-block:hover {
    border-color: rgba(168, 85, 247, 0.5);
    box-shadow: 0 8px 24px rgba(168, 85, 247, 0.15);
}

.block-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.2rem 1.5rem;
    background: rgba(0, 212, 255, 0.05);
    border-bottom: 1px solid var(--border-color);
}

.slam-block .block-header {
    background: rgba(168, 85, 247, 0.05);
}

.block-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.9rem;
    color: white;
}

.block-number.slam {
    background: linear-gradient(135deg, #a855f7, #7c3aed);
}

.block-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.competence-table {
    padding: 1rem 1.5rem;
}

.table-header {
    display: flex;
    justify-content: space-between;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0.5rem;
}

.table-header span {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.competence-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    transition: background 0.2s ease;
}

.competence-row:last-child {
    border-bottom: none;
}

.competence-row:hover {
    background: rgba(0, 212, 255, 0.03);
    margin: 0 -1.5rem;
    padding: 0.8rem 1.5rem;
}

.comp-name {
    font-size: 0.95rem;
    color: var(--text-primary);
    flex: 1;
    padding-right: 1rem;
}

.level-indicator {
    display: flex;
    gap: 4px;
}

.level-dot {
    width: 12px;
    height: 12px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: all 0.3s ease;
}

.level-dot.active {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-color: transparent;
    box-shadow: 0 2px 8px rgba(0, 212, 255, 0.3);
}

.slam-block .level-dot.active {
    background: linear-gradient(135deg, #a855f7, #7c3aed);
    box-shadow: 0 2px 8px rgba(168, 85, 247, 0.3);
}

/* ======== LEGENDE ======== */
.legend {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 2rem;
}

.legend h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.legend-items {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.legend-item span:last-child {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ======== BOUTON PDF ======== */
.pdf-download {
    text-align: center;
    margin-top: 2rem;
}

.btn-pdf {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #a855f7, #7c3aed);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(168, 85, 247, 0.3);
}

.btn-pdf:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(168, 85, 247, 0.4);
}

.btn-pdf svg {
    transition: transform 0.3s ease;
}

.btn-pdf:hover svg {
    transform: translateY(2px);
}

/* ======== HOME BUTTON ======== */
.home-button {
    display: block;
    width: fit-content;
    margin: 3rem auto 0;
    background: rgba(0, 212, 255, 0.08);
    color: var(--accent-primary);
    text-decoration: none;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 212, 255, 0.2);
    font-weight: 500;
}

.home-button:hover {
    background: rgba(0, 212, 255, 0.12);
    border-color: rgba(0, 212, 255, 0.4);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 212, 255, 0.15);
}

/* ======== THEME TOGGLE ======== */
.theme-toggle {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 1000;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.theme-toggle:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: scale(1.1);
}

.theme-toggle svg {
    width: 24px;
    height: 24px;
    color: var(--accent-primary);
    transition: transform 0.3s ease;
}

.theme-toggle:hover svg {
    transform: rotate(15deg);
}

.theme-toggle .sun-icon { display: none; }
.theme-toggle .moon-icon { display: block; }

[data-theme="light"] .theme-toggle .sun-icon { display: block; }
[data-theme="light"] .theme-toggle .moon-icon { display: none; }

/* Light theme adjustments */
[data-theme="light"] .stack-category,
[data-theme="light"] .competence-block,
[data-theme="light"] .legend {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .tech-bar {
    background: rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .level-dot {
    background: rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.12);
}

/* ======== RESPONSIVE ======== */
@media (max-width: 768px) {
    .container {
        padding: 1.5rem 1rem;
    }

    .header h1 {
        font-size: 2rem;
    }

    .header p {
        font-size: 0.95rem;
    }

    .tabs-container {
        flex-direction: column;
        gap: 0.8rem;
    }

    .tab-btn {
        width: 100%;
        justify-content: center;
        padding: 0.9rem 1.5rem;
    }

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

    .block-header {
        padding: 1rem;
    }

    .block-header h3 {
        font-size: 1rem;
    }

    .competence-table {
        padding: 0.8rem 1rem;
    }

    .competence-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .competence-row:hover {
        margin: 0 -1rem;
        padding: 0.8rem 1rem;
    }

    .comp-name {
        padding-right: 0;
    }

    .legend-items {
        flex-direction: column;
        gap: 1rem;
    }

    .btn-pdf {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.6rem;
    }

    .stack-category {
        padding: 1.2rem;
    }

    .stack-header h2 {
        font-size: 1.1rem;
    }

    .tech-name {
        font-size: 0.9rem;
    }

    .block-number {
        width: 36px;
        height: 36px;
        font-size: 0.85rem;
    }

    .block-header h3 {
        font-size: 0.95rem;
    }

    .comp-name {
        font-size: 0.9rem;
    }

    .level-dot {
        width: 10px;
        height: 10px;
    }

    .theme-toggle {
        width: 42px;
        height: 42px;
        top: 1rem;
        right: 1rem;
    }

    .theme-toggle svg {
        width: 20px;
        height: 20px;
    }
}