/* =========================================
   VARIABLES DE THEMES (Harmonisés)
   ========================================= */
:root[data-theme="dark"] {
    --bg-color: #0b0f19;
    --card-bg: rgba(17, 24, 39, 0.6);
    --card-hover: rgba(30, 41, 59, 0.8);
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --border-color: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --bg-gradient-1: #1e1b4b;
    --bg-gradient-2: #020617;
    --tag-bg: rgba(255, 255, 255, 0.05);
    --btn-bg: rgba(255, 255, 255, 0.1);

    /* PromptCrafter Accents */
    --accent-cyan: #22d3ee;
    --accent-blue: #3b82f6;
    --accent-purple: #a855f7;
    --accent-pink: #ec4899;
}

:root[data-theme="light"] {
    --bg-color: #f8fafc;
    --card-bg: rgba(255, 255, 255, 0.7);
    --card-hover: rgba(255, 255, 255, 0.95);
    --text-main: #0f172a;
    --text-muted: #475569;
    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(0, 0, 0, 0.15);
    --glass-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.1);
    --bg-gradient-1: #e0e7ff;
    --bg-gradient-2: #f1f5f9;
    --tag-bg: rgba(0, 0, 0, 0.05);
    --btn-bg: rgba(0, 0, 0, 0.05);

    /* PromptCrafter Accents */
    --accent-cyan: #06b6d4;
    --accent-blue: #2563eb;
    --accent-purple: #9333ea;
    --accent-pink: #db2777;
}

:root {
    --font-display: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;
    --transition-smooth: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    --transition-color: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    transition: var(--transition-color);
}

::selection {
    background-color: rgba(34, 211, 238, 0.3);
    color: var(--text-main);
}

/* =========================================
   CURSEUR PERSONNALISÉ
   ========================================= */
@media (pointer: fine) {

    body,
    a,
    button,
    .feature-card,
    .lang-btn,
    .theme-btn {
        cursor: none;
    }

    .custom-cursor,
    .cursor-follower {
        position: fixed;
        top: 0;
        left: 0;
        border-radius: 50%;
        pointer-events: none;
        z-index: 9999;
    }

    .custom-cursor {
        width: 6px;
        height: 6px;
        background: var(--text-main);
        transition: transform 0.2s, background 0.2s;
    }

    .cursor-follower {
        width: 32px;
        height: 32px;
        border: 1.5px solid var(--border-hover);
        transition: width 0.3s, height 0.3s, background 0.3s, border-color 0.3s;
        z-index: 9998;
    }

    .custom-cursor.active {
        transform: scale(0);
    }

    .cursor-follower.active {
        width: 50px;
        height: 50px;
        background: rgba(34, 211, 238, 0.1);
        border-color: var(--accent-cyan);
    }
}

@media (pointer: coarse) {

    .custom-cursor,
    .cursor-follower {
        display: none !important;
    }
}

/* =========================================
   EFFETS D'ARRIÈRE-PLAN
   ========================================= */
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    background: radial-gradient(circle at top right, var(--bg-gradient-1), transparent 50%),
        radial-gradient(circle at bottom left, var(--bg-gradient-2), transparent 50%);
    transition: var(--transition-color);
}

#particle-network {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 10s infinite alternate ease-in-out;
    transition: opacity 0.5s ease;
    z-index: 0;
}

[data-theme="light"] .glow-orb {
    opacity: 0.2;
}

.orb-1 {
    top: -10%;
    left: -10%;
    width: 40vw;
    height: 40vw;
    background: rgba(59, 130, 246, 0.3);
}

.orb-2 {
    top: 40%;
    right: -10%;
    width: 30vw;
    height: 30vw;
    background: rgba(168, 85, 247, 0.2);
}

.orb-3 {
    bottom: -20%;
    left: 20%;
    width: 35vw;
    height: 35vw;
    background: rgba(236, 72, 153, 0.2);
}

@keyframes float {
    0% {
        transform: translate(0, 0) scale(1);
    }

    100% {
        transform: translate(30px, 50px) scale(1.1);
    }
}

/* =========================================
   TYPOGRAPHIE & UTILITAIRES
   ========================================= */
.text-center {
    text-align: center;
}

.font-mono {
    font-family: var(--font-mono);
}

.text-sm {
    font-size: 0.875rem;
}

.gradient-text {
    background: linear-gradient(to right, var(--text-main), var(--text-muted));
    -webkit-background-clip: text;
    color: transparent;
}

.gradient-text-alt {
    background: linear-gradient(to right, var(--accent-cyan), var(--accent-blue));
    -webkit-background-clip: text;
    color: transparent;
}

.gradient-text-blue {
    background: linear-gradient(to right, #60a5fa, #3b82f6);
    -webkit-background-clip: text;
    color: transparent;
}

.gradient-text-purple {
    background: linear-gradient(to right, var(--accent-purple), var(--accent-pink));
    -webkit-background-clip: text;
    color: transparent;
}

/* =========================================
   LAYOUT
   ========================================= */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 20;
}

.section {
    padding: 6rem 0;
}

.glass-panel {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    box-shadow: var(--glass-shadow);
    border-radius: 1rem;
    transition: var(--transition-smooth);
}

.glass-panel.p-12 {
    padding: 3rem;
    margin: 0 auto;
}

/* =========================================
   NAVIGATION (Harmonisée)
   ========================================= */
.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(var(--bg-color), 0.5);
    transition: var(--transition-color);
}

.brand img {
    height: 70px;
    object-fit: contain;
    transition: transform 0.3s ease;
    border-radius: 8px;
}

.brand img:hover {
    transform: scale(1.05);
}

.controls {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links a:not(.launch-btn) {
    color: var(--text-muted);
    font-weight: 600;
    text-decoration: none;
    font-size: 0.95rem;
    font-family: var(--font-body);
    transition: color 0.2s;
}

.nav-links a:not(.launch-btn):hover {
    color: var(--text-main);
}

.launch-btn {
    background: var(--btn-bg);
    color: var(--text-main);
    text-decoration: none;
    padding: 0.5rem 1.2rem;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    font-weight: 700;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.launch-btn:hover {
    background: var(--card-hover);
    border-color: var(--accent-cyan);
}

.lang-switch,
.theme-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--btn-bg);
    padding: 0.4rem 0.8rem;
    border-radius: 50px;
    border: 1px solid var(--border-color);
}

.lang-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-weight: 600;
    font-family: var(--font-display);
    cursor: pointer;
    padding: 0.2rem 0.5rem;
    border-radius: 20px;
    transition: all 0.2s;
}

.lang-btn.active {
    color: var(--text-main);
    background: var(--card-bg);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.theme-btn {
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.2rem;
    transition: transform 0.3s ease;
}

.theme-btn:hover {
    transform: rotate(15deg) scale(1.1);
}

/* =========================================
   HERO SECTION
   ========================================= */
.hero {
    text-align: center;
    padding: 6rem 1rem 4rem;
    position: relative;
    z-index: 10;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto 3rem;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1.2rem;
    background: var(--tag-bg);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    margin-bottom: 1.5rem;
    letter-spacing: 1px;
    color: var(--accent-cyan);
    transition: var(--transition-color);
    font-weight: 700;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    max-width: 650px;
    margin: 0 auto;
    color: var(--text-muted);
    font-size: 1.15rem;
    transition: color 0.3s;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.primary-btn,
.secondary-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.8rem;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-smooth);
}

.primary-btn {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.primary-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(34, 211, 238, 0.4);
}

.primary-btn .arrow {
    transition: transform 0.3s;
}

.primary-btn:hover .arrow {
    transform: translateX(5px);
}

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

.secondary-btn:hover {
    background: var(--card-hover);
    border-color: var(--text-main);
}

/* Interactive Terminal */
.hero-terminal-wrapper {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

.hero-terminal {
    text-align: left;
    overflow: hidden;
}

.terminal-header {
    background: rgba(0, 0, 0, 0.4);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}

.mac-dots {
    display: flex;
    gap: 0.375rem;
    margin-right: 1rem;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red {
    background: #ef4444;
}

.dot.yellow {
    background: #f59e0b;
}

.dot.green {
    background: #10b981;
}

.terminal-title {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    margin: 0 auto;
    transform: translateX(-24px);
}

.terminal-body {
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-main);
    min-height: 250px;
    line-height: 1.6;
    background: rgba(0, 0, 0, 0.2);
}

.keyword {
    color: var(--accent-cyan);
    font-weight: 700;
}

/* =========================================
   FEATURES SECTION
   ========================================= */
.section-title {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    padding: 2rem;
    border-radius: 20px;
    text-decoration: none;
    color: var(--text-main);
}

.feature-card:hover {
    transform: translateY(-5px);
    background: var(--card-hover);
    border-color: var(--accent-cyan);
    box-shadow: 0 10px 30px rgba(34, 211, 238, 0.15);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    background: var(--btn-bg);
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    color: var(--accent-cyan);
}

.feature-icon svg {
    width: 32px;
    height: 32px;
}

.feature-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.feature-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* =========================================
   ARCHITECTURE SECTION
   ========================================= */
.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.stack-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.stack-list li {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1.2rem;
    border-radius: 16px;
    background: var(--btn-bg);
    border: 1px solid var(--border-color);
}

.stack-icon {
    font-size: 1.5rem;
    color: var(--accent-blue);
    padding-top: 2px;
}

.stack-list li strong {
    display: block;
    font-family: var(--font-display);
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
}

.stack-list li span {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.diagram {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    text-align: center;
}

.diagram-node {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1.25rem;
    border-radius: 14px;
    font-weight: 700;
    font-family: var(--font-mono);
}

.diagram-node small {
    display: block;
    color: var(--text-muted);
    font-weight: 400;
    margin-top: 0.5rem;
    font-family: var(--font-body);
}

.diagram-arrow {
    color: var(--text-muted);
    font-size: 1.5rem;
}

.diagram-node.core {
    border-color: var(--accent-cyan);
    background: rgba(34, 211, 238, 0.1);
}

.diagram-node.api {
    border-color: var(--accent-purple);
    background: rgba(168, 85, 247, 0.1);
}

.diagram-node.output {
    border-color: #10b981;
    background: rgba(16, 185, 129, 0.1);
}

/* =========================================
   MULTIMODAL SECTION
   ========================================= */
.mm-split {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 2rem;
    padding: 3rem;
}

.mm-left {
    border-right: 1px dashed var(--border-color);
    padding-right: 2rem;
}

.mm-right {
    padding-left: 2rem;
}

.upload-sim {
    border: 2px dashed var(--border-hover);
    padding: 3rem;
    border-radius: 16px;
    background: var(--btn-bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    font-weight: 600;
    color: var(--text-muted);
}

.upload-icon {
    font-size: 3rem;
    color: var(--text-muted);
}

.mm-center {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.glow-line {
    width: 30px;
    height: 2px;
    background: var(--accent-purple);
    box-shadow: 0 0 10px var(--accent-purple);
}

.processing-node {
    color: var(--accent-purple);
}

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: .5;
    }
}

.code-line {
    margin-bottom: 0.5rem;
}

/* =========================================
   FOOTER (Harmonisé)
   ========================================= */
.site-footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
    position: relative;
    z-index: 10;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.footer-icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--btn-bg);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.footer-icon-btn:hover {
    color: var(--text-main);
    background: var(--card-hover);
    border-color: var(--accent-cyan);
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 8px 20px rgba(34, 211, 238, 0.2);
}

/* =========================================
   BOUTON RETOUR EN HAUT
   ========================================= */
#scrollTopBtn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--card-bg);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    box-shadow: var(--glass-shadow);
    backdrop-filter: blur(10px);
    z-index: 99;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
}

#scrollTopBtn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#scrollTopBtn:hover {
    background: var(--card-hover);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    transform: translateY(-5px) scale(1.1);
}

/* Animations d'apparition */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 768px) {

    .split-layout,
    .mm-split {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .mm-left {
        border-right: none;
        border-bottom: 1px dashed var(--border-color);
        padding-right: 0;
        padding-bottom: 2rem;
    }

    .mm-right {
        padding-left: 0;
        padding-top: 2rem;
        text-align: center;
    }

    .mm-center {
        flex-direction: column;
        margin: 2rem 0;
    }

    .glow-line {
        width: 2px;
        height: 30px;
    }

    .nav-links {
        display: none;
    }
}