/* ============================================
   BON À TIRER — Mirval Miroiterie
   ============================================ */

:root {
    --primary: #1a5276;
    --primary-light: #2980b9;
    --primary-dark: #0e3a54;
    --accent: #e67e22;
    --accent-light: #f39c12;
    --success: #27ae60;
    --danger: #e74c3c;
    --gray-50: #f8f9fa;
    --gray-100: #f1f3f5;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #868e96;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
    --transition: 0.2s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--gray-100);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
}

/* ---- Layout ---- */
.app-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ---- Header ---- */
.app-header {
    background: var(--primary);
    color: white;
    padding: 20px 24px;
    margin: 0 -20px 32px;
    box-shadow: var(--shadow-md);
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 16px;
    max-width: 900px;
    margin: 0 auto;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: rgba(255,255,255,0.15);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 800;
    letter-spacing: -1px;
    border: 2px solid rgba(255,255,255,0.3);
}

.app-header h1 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.app-header .subtitle {
    font-size: 13px;
    opacity: 0.8;
    margin-top: 2px;
}

/* ---- Cards ---- */
.card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    overflow: hidden;
    transition: box-shadow var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
}

.card-header h2 {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-800);
    flex: 1;
}

.card-actions {
    display: flex;
    gap: 8px;
}

.step-badge {
    width: 28px;
    height: 28px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    flex-shrink: 0;
}

.card-body {
    padding: 24px;
}

/* ---- Drop Zone ---- */
.drop-zone {
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-lg);
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--gray-50);
}

.drop-zone:hover,
.drop-zone.drag-over {
    border-color: var(--primary-light);
    background: #eaf2f8;
}

.drop-zone.drag-over {
    transform: scale(1.01);
}

.drop-icon {
    width: 48px;
    height: 48px;
    color: var(--gray-400);
    margin-bottom: 12px;
}

.drop-text {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 4px;
}

.drop-subtext {
    font-size: 13px;
    color: var(--gray-500);
    margin-bottom: 12px;
}

/* ---- File Info ---- */
.file-info {
    margin-top: 16px;
}

.file-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #eaf2f8;
    border: 1px solid #bdd7ee;
    color: var(--primary);
    padding: 8px 16px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--danger);
    font-size: 20px;
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
    opacity: 0.7;
    transition: opacity var(--transition);
}

.btn-icon:hover {
    opacity: 1;
}

/* ---- Canvas ---- */
.canvas-wrapper {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    overflow: hidden;
    position: relative;
}

#dxfCanvas {
    display: block;
    width: 100%;
    height: auto;
    background: #fafbfc;
}

.dimensions-info {
    margin-top: 12px;
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.dim-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    padding: 6px 12px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-700);
}

.dim-tag strong {
    color: var(--primary);
}

/* ---- Forms ---- */
fieldset {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
}

fieldset:last-child {
    margin-bottom: 0;
}

legend {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    padding: 0 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 4px;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 8px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
    color: var(--gray-800);
    transition: border-color var(--transition), box-shadow var(--transition);
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(41, 128, 185, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-400);
}

textarea {
    resize: vertical;
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 24px;
    padding-top: 4px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px !important;
    font-weight: 400 !important;
    color: var(--gray-700) !important;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border: none;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

.btn-sm {
    padding: 5px 12px;
    font-size: 12px;
}

.btn-lg {
    padding: 12px 28px;
    font-size: 16px;
}

.btn-outline {
    background: white;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: var(--shadow);
}

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

.btn-primary:active {
    transform: translateY(0);
}

/* ---- Generate Section ---- */
.generate-section {
    text-align: center;
}

.generate-section p {
    color: var(--gray-600);
    margin-bottom: 20px;
}

.generate-actions {
    display: flex;
    justify-content: center;
    gap: 12px;
}

/* ---- Utilities ---- */
.hidden {
    display: none !important;
}

/* ---- Footer ---- */
.app-footer {
    text-align: center;
    padding: 24px 0;
    color: var(--gray-500);
    font-size: 13px;
    border-top: 1px solid var(--gray-200);
    margin-top: 20px;
}

/* ---- Toast / Notifications ---- */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--gray-800);
    color: white;
    padding: 12px 20px;
    border-radius: var(--radius);
    font-size: 14px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    animation: slideIn 0.3s ease, fadeOut 0.3s ease 2.7s;
    opacity: 0;
    animation-fill-mode: forwards;
}

.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }

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

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

/* ---- Responsive ---- */
@media (max-width: 640px) {
    .form-grid {
        grid-template-columns: 1fr;
    }

    .card-body {
        padding: 16px;
    }

    .drop-zone {
        padding: 32px 16px;
    }

    .app-header {
        padding: 16px;
    }
}