/* ═══════════ DESIGN TOKENS ═══════════ */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --amber: #D4872C;
    --amber-light: #F0C27A;
    --charcoal: #1A1A1A;
    --warm-gray: #2D2A26;
    --sand: #F5F0E8;
    --cream: #FDFBF7;
    --terracotta: #C4643A;
    --sage: #7A8B6F;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 1px 3px rgba(26,26,26,0.06);
    --shadow-md: 0 4px 16px rgba(26,26,26,0.08);
    --shadow-lg: 0 8px 32px rgba(26,26,26,0.12);
    --transition: 0.2s ease;
}

body {
    font-family: 'DM Sans', -apple-system, sans-serif;
    background: var(--cream);
    color: var(--charcoal);
    overflow-x: hidden;
    line-height: 1.5;
}

/* ═══════════ NAV ═══════════ */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 3rem;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    background: rgba(253, 251, 247, 0.92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(26, 26, 26, 0.06);
}

.logo {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--charcoal);
    letter-spacing: -0.02em;
}

.logo span { color: var(--amber); }

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

.nav-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--warm-gray);
    opacity: 0.6;
}

/* ═══════════ BUTTONS ═══════════ */
.btn-primary {
    background: var(--charcoal);
    color: var(--cream);
    border: none;
    padding: 0.65rem 1.5rem;
    border-radius: var(--radius-sm);
    font-family: 'DM Sans', sans-serif;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition);
    letter-spacing: -0.01em;
}

.btn-primary:hover {
    background: var(--warm-gray);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary.btn-lg {
    padding: 0.85rem 2rem;
    font-size: 1rem;
}

.btn-secondary {
    background: transparent;
    color: var(--charcoal);
    border: 1.5px solid rgba(26,26,26,0.15);
    padding: 0.6rem 1.3rem;
    border-radius: var(--radius-sm);
    font-family: 'DM Sans', sans-serif;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-secondary:hover {
    border-color: var(--amber);
    color: var(--amber);
    background: rgba(212, 135, 44, 0.04);
}

/* ═══════════ HERO ═══════════ */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    padding: 8rem 4rem 4rem;
    gap: 4rem;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.hero-left h1 {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: clamp(2.8rem, 5vw, 4.2rem);
    line-height: 1.05;
    letter-spacing: -0.03em;
    color: var(--charcoal);
    margin-bottom: 1.5rem;
}

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

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--warm-gray);
    opacity: 0.75;
    line-height: 1.6;
    margin-bottom: 2.5rem;
    max-width: 480px;
}

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

.hero-hint {
    font-size: 0.85rem;
    color: var(--warm-gray);
    opacity: 0.5;
}

/* Hero visual — floating cards */
.hero-visual {
    position: relative;
    height: 400px;
}

.hero-card {
    position: absolute;
    background: white;
    border-radius: var(--radius);
    padding: 1.2rem 1.5rem;
    box-shadow: var(--shadow-lg);
    width: 240px;
    transition: transform 0.4s ease;
}

.hero-card:hover { transform: translateY(-4px) rotate(0deg) !important; }

.card-1 { top: 20px; left: 20px; transform: rotate(-2deg); }
.card-2 { top: 100px; left: 160px; transform: rotate(1deg); z-index: 2; }
.card-3 { top: 210px; left: 60px; transform: rotate(-1deg); }

.mini-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    margin-bottom: 0.6rem;
}

.mini-badge.nouveau { background: #EEF0FF; color: #4F5BD5; }
.mini-badge.en-cours { background: #FFF3E0; color: var(--amber); }
.mini-badge.signe { background: #E8F5E9; color: #2E7D32; }

.mini-name { font-weight: 700; font-size: 0.95rem; margin-bottom: 0.15rem; }
.mini-type { font-size: 0.82rem; color: var(--warm-gray); opacity: 0.7; margin-bottom: 0.4rem; }
.mini-amount { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 1.1rem; color: var(--amber); }

/* ═══════════ FEATURES ═══════════ */
.features-section {
    padding: 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: white;
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(26,26,26,0.04);
    transition: all var(--transition);
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.feature-icon { font-size: 1.8rem; margin-bottom: 1rem; }

.feature-card h3 {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--warm-gray);
    opacity: 0.7;
    line-height: 1.5;
}

/* ═══════════ STATS BAR ═══════════ */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.2rem;
    padding: 5.5rem 2rem 1rem;
    max-width: 1600px;
    margin: 0 auto;
}

.stat-card {
    background: white;
    border-radius: var(--radius);
    padding: 1.3rem 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(26,26,26,0.04);
    text-align: center;
}

.stat-value {
    font-family: 'Syne', sans-serif;
    font-weight: 800;
    font-size: 1.6rem;
    color: var(--charcoal);
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--warm-gray);
    opacity: 0.55;
    margin-top: 0.3rem;
}

/* ═══════════ KANBAN BOARD ═══════════ */
.kanban-board {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
    padding: 1.2rem 2rem 3rem;
    max-width: 1600px;
    margin: 0 auto;
    min-height: 60vh;
}

.kanban-column {
    background: var(--sand);
    border-radius: var(--radius);
    padding: 1rem;
    min-height: 400px;
    transition: background var(--transition);
}

.kanban-column.drag-over {
    background: rgba(212, 135, 44, 0.08);
    outline: 2px dashed var(--amber-light);
}

.column-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid rgba(26,26,26,0.06);
}

.column-title {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 0.85rem;
    letter-spacing: -0.01em;
}

.column-count {
    background: rgba(26,26,26,0.06);
    color: var(--warm-gray);
    font-size: 0.72rem;
    font-weight: 700;
    padding: 0.2rem 0.55rem;
    border-radius: 20px;
}

.column-total {
    font-size: 0.75rem;
    color: var(--amber);
    font-weight: 600;
    margin-top: 0.3rem;
}

/* Stage-specific header accents */
.kanban-column[data-stage="nouveau"] .column-header { border-bottom-color: #4F5BD5; }
.kanban-column[data-stage="en_cours"] .column-header { border-bottom-color: var(--amber); }
.kanban-column[data-stage="devis_envoye"] .column-header { border-bottom-color: var(--terracotta); }
.kanban-column[data-stage="signe"] .column-header { border-bottom-color: var(--sage); }
.kanban-column[data-stage="installe"] .column-header { border-bottom-color: #2E7D32; }

/* ═══════════ DEVIS CARDS ═══════════ */
.devis-card {
    background: white;
    border-radius: var(--radius-sm);
    padding: 1rem 1.1rem;
    margin-bottom: 0.65rem;
    box-shadow: var(--shadow-sm);
    cursor: grab;
    transition: all var(--transition);
    border: 1px solid rgba(26,26,26,0.04);
    position: relative;
}

.devis-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.devis-card.dragging {
    opacity: 0.5;
    transform: rotate(2deg);
    box-shadow: var(--shadow-lg);
}

.devis-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.4rem;
}

.devis-client {
    font-weight: 700;
    font-size: 0.92rem;
    color: var(--charcoal);
}

.devis-actions {
    display: flex;
    gap: 0.3rem;
    opacity: 0;
    transition: opacity var(--transition);
}

.devis-card:hover .devis-actions { opacity: 1; }

.devis-action-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.85rem;
    padding: 0.15rem 0.3rem;
    border-radius: 4px;
    opacity: 0.5;
    transition: all var(--transition);
}

.devis-action-btn:hover {
    opacity: 1;
    background: rgba(26,26,26,0.05);
}

.devis-action-btn.delete:hover { color: #D32F2F; }

.devis-product {
    font-size: 0.82rem;
    color: var(--warm-gray);
    opacity: 0.7;
    margin-bottom: 0.5rem;
}

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

.devis-amount {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    color: var(--amber);
}

.devis-date {
    font-size: 0.72rem;
    color: var(--warm-gray);
    opacity: 0.45;
}

/* ═══════════ MODAL ═══════════ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(26,26,26,0.4);
    backdrop-filter: blur(4px);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    width: 90%;
    max-width: 560px;
    box-shadow: 0 24px 64px rgba(26,26,26,0.2);
    animation: slideUp 0.25s ease;
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-header h2 {
    font-family: 'Syne', sans-serif;
    font-weight: 700;
    font-size: 1.3rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--warm-gray);
    opacity: 0.5;
    transition: opacity var(--transition);
    line-height: 1;
}

.modal-close:hover { opacity: 1; }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--warm-gray);
    opacity: 0.7;
    margin-bottom: 0.4rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.7rem 0.9rem;
    border: 1.5px solid rgba(26,26,26,0.1);
    border-radius: var(--radius-sm);
    font-family: 'DM Sans', sans-serif;
    font-size: 0.92rem;
    color: var(--charcoal);
    background: var(--cream);
    transition: border-color var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--amber);
}

.form-group textarea { resize: vertical; }

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(26,26,26,0.06);
}

/* ═══════════ RESPONSIVE ═══════════ */
@media (max-width: 1100px) {
    .kanban-board {
        grid-template-columns: repeat(3, 1fr);
    }
    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    nav { padding: 1rem 1.5rem; }
    .hero {
        grid-template-columns: 1fr;
        padding: 7rem 1.5rem 2rem;
        gap: 2rem;
        min-height: auto;
    }
    .hero-right { display: none; }
    .features-grid { grid-template-columns: 1fr; }
    .kanban-board {
        grid-template-columns: 1fr;
        padding: 1rem;
    }
    .stats-bar {
        grid-template-columns: 1fr 1fr;
        padding: 5rem 1rem 1rem;
    }
    .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .stats-bar { grid-template-columns: 1fr; }
}

/* ═══════════ SCROLLBAR ═══════════ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(26,26,26,0.12); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(26,26,26,0.25); }

/* ═══════════ LOADING ═══════════ */
.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    color: var(--warm-gray);
    opacity: 0.5;
    font-size: 0.9rem;
}

/* ═══════════ EMPTY STATE ═══════════ */
.empty-column {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--warm-gray);
    opacity: 0.35;
    font-size: 0.82rem;
}

/* ═══════════ TOAST ═══════════ */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--charcoal);
    color: var(--cream);
    padding: 0.85rem 1.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    z-index: 300;
    animation: slideUp 0.3s ease, fadeOut 0.3s ease 2.5s forwards;
}

@keyframes fadeOut { to { opacity: 0; transform: translateY(10px); } }