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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f5f5f5;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* ── Loader ── */
.loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(245, 245, 245, 0.95);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.3s ease;
}

.loader-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #e0e0e0;
    border-top-color: #4f6ef7;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 15px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loader-overlay p {
    color: #666;
    font-size: 14px;
}

/* ── Header ── */
.page-header {
    background: white;
    border-radius: 10px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.header-content h1 {
    color: #333;
    margin-bottom: 8px;
    font-size: 28px;
}

.header-content .subtitle {
    color: #666;
    font-size: 14px;
}

.btn-back {
    padding: 10px 20px;
    background: #f0f0f0;
    color: #333;
    text-decoration: none;
    border-radius: 5px;
    font-size: 14px;
    transition: background 0.2s;
}

.btn-back:hover {
    background: #e0e0e0;
}

/* ── Sections ── */
.config-section,
.search-section,
.map-container {
    background: white;
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.config-section h2,
.search-section h2,
.map-container h2 {
    color: #333;
    font-size: 20px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #f0f0f0;
}

/* ── Form ── */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: 500;
    font-size: 14px;
}

.form-group input[type="text"],
.form-group input[type="email"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus {
    outline: none;
    border-color: #4f6ef7;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.required {
    color: #e74c3c;
}

/* ── Transporteurs chips ── */
.transporters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 10px;
}

.transporter-chip input[type="checkbox"] {
    display: none;
}

.transporter-chip label {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 15px;
    background: #f8f9fa;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
    font-weight: 500;
}

.transporter-chip input:checked + label {
    background: #e8f0ff;
    border-color: #4f6ef7;
    color: #4f6ef7;
}

.transporter-chip label:hover {
    border-color: #4f6ef7;
}

.chip-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
    opacity: 0.7;
}

/* ── Color picker ── */
.color-picker-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.color-picker-group input[type="color"] {
    width: 50px;
    height: 40px;
    border: 1px solid #ddd;
    border-radius: 5px;
    cursor: pointer;
    padding: 2px;
}

.color-picker-group #color-value {
    font-family: 'Courier New', monospace;
    font-size: 14px;
    color: #666;
}

/* ── Checkbox group ── */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-group label {
    margin-bottom: 0;
    cursor: pointer;
}

/* ── Buttons ── */
.btn-primary {
    padding: 12px 30px;
    background: linear-gradient(135deg, #4f6ef7, #7c3aed);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.1s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary:hover {
    opacity: 0.9;
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-copy {
    padding: 10px 20px;
    background: #4f6ef7;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s;
}

.btn-copy:hover {
    opacity: 0.9;
}

/* ── Status message ── */
.status-message {
    display: none;
    padding: 12px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    font-weight: 500;
}

.status-message.show {
    display: block;
}

.status-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.status-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.status-message.warning {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.status-message.info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* ── Map ── */
.map-wrapper {
    width: 100%;
    height: 560px;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid #e0e0e0;
    background: #f8f9fa;
}

/* ── Selected point ── */
.selected-point {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 20px;
    margin-top: 20px;
    background: #e8f0ff;
    border: 2px solid #4f6ef7;
    border-radius: 10px;
    flex-wrap: wrap;
}

.selected-info h3 {
    font-size: 14px;
    color: #4f6ef7;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.selected-code {
    font-family: 'Courier New', monospace;
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin-bottom: 5px;
}

.selected-details {
    font-size: 14px;
    color: #666;
}

/* ── Debug ── */
.debug-details {
    margin-top: 20px;
}

.debug-details summary {
    font-size: 13px;
    color: #666;
    cursor: pointer;
    padding: 8px 0;
    user-select: none;
}

.debug-details summary:hover {
    color: #333;
}

.debug-details pre {
    background: #f8f9fa;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 15px;
    font-family: 'Courier New', monospace;
    font-size: 12px;
    color: #333;
    overflow-x: auto;
    max-height: 300px;
    overflow-y: auto;
    margin-top: 10px;
    line-height: 1.6;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

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

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

    .selected-point {
        flex-direction: column;
        align-items: flex-start;
    }

    .map-wrapper {
        height: 400px;
    }
}