:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #16a34a;
    --warning: #f59e0b;
    --danger: #dc2626;
    --bg: #f8fafc;
    --card: #ffffff;
    --text: #1e293b;
    --muted: #64748b;
    --border: #e2e8f0;
    --radius: 12px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.container { max-width: 800px; margin: 0 auto; padding: 0 20px; }

/* Header */
header {
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    color: white;
    padding: 40px 0;
    text-align: center;
}
header h1 { font-size: 2.5em; margin-bottom: 8px; }
header .subtitle { font-size: 1.2em; opacity: 0.9; }

.badge-insee {
    display: inline-block;
    margin-top: 12px;
    padding: 4px 14px;
    background: rgba(255,255,255,0.2);
    border: 1px solid rgba(255,255,255,0.4);
    border-radius: 20px;
    font-size: 0.85em;
    backdrop-filter: blur(4px);
}

/* Cards */
.card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 30px;
    margin: 20px 0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.card h2 { margin-bottom: 20px; font-size: 1.4em; }

/* ============================================================
   SKELETON LOADING UI
   ============================================================ */

@keyframes skeleton-pulse {
    0% { opacity: 0.4; }
    50% { opacity: 1; }
    100% { opacity: 0.4; }
}

.skeleton-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 20px;
    margin: 20px 0 0;
}

.skeleton-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.skeleton-label {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.95em;
}

.skeleton-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 30px;
    margin: 16px 0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.skeleton-block {
    background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%);
    background-size: 200% 100%;
    animation: skeleton-pulse 1.5s ease-in-out infinite;
    border-radius: 6px;
}

.skeleton-title {
    height: 24px;
    width: 40%;
    margin-bottom: 16px;
}

.skeleton-text {
    height: 14px;
    width: 100%;
    margin-bottom: 10px;
}

.skeleton-circle {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%);
    background-size: 200% 100%;
    animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.skeleton-bar {
    height: 40px;
    border-radius: 6px;
}

.skeleton-map {
    height: 300px;
    border-radius: 8px;
    margin-top: 12px;
}

.skeleton-row {
    height: 36px;
    margin-bottom: 8px;
}

.skeleton-stat {
    height: 80px;
    border-radius: 8px;
}

/* ============================================================
   MULTI-CITY COMPARE
   ============================================================ */

.btn-add-ville {
    margin-top: 8px;
    padding: 6px 14px;
    background: transparent;
    border: 1px dashed var(--primary);
    border-radius: 8px;
    color: var(--primary);
    font-size: 0.85em;
    cursor: pointer;
    transition: all 0.2s;
    width: 100%;
}
.btn-add-ville:hover {
    background: rgba(37, 99, 235, 0.05);
    border-style: solid;
}

.ville-input-row {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-bottom: 6px;
}
.ville-input-row input { flex: 1; }
.ville-input-row .btn-remove-ville {
    background: none;
    border: none;
    color: var(--danger);
    font-size: 1.2em;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background 0.2s;
}
.ville-input-row .btn-remove-ville:hover {
    background: rgba(220, 38, 38, 0.1);
}

.compare-subtitle {
    color: var(--muted);
    font-size: 0.95em;
    margin-top: -10px;
}

.compare-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 20px;
    margin: 0 0 20px;
}

.compare-column {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    overflow: hidden;
}

.compare-column-header {
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    color: white;
    padding: 16px 20px;
    text-align: center;
}
.compare-column-header h3 { margin: 0; font-size: 1.1em; }

.compare-column-body {
    padding: 20px;
}

.compare-score-mini {
    text-align: center;
    margin-bottom: 16px;
}
.compare-score-circle {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 6px solid var(--border);
    margin-bottom: 8px;
}
.compare-score-value { font-size: 2em; font-weight: 800; line-height: 1; }
.compare-score-label { font-size: 0.85em; color: var(--muted); }
.compare-verdict { font-size: 0.9em; font-weight: 600; }

.compare-map {
    height: 200px;
    border-radius: 8px;
    margin: 12px 0;
}

.compare-stats-mini {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin: 12px 0;
}
.compare-stat-item {
    text-align: center;
    padding: 10px 6px;
    background: var(--bg);
    border-radius: 6px;
}
.compare-stat-value { font-size: 1.2em; font-weight: 700; color: var(--primary); }
.compare-stat-label { font-size: 0.75em; color: var(--muted); }

.compare-details-mini {
    margin-top: 12px;
}
.compare-detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.85em;
}
.compare-detail-row:last-child { border: none; }
.compare-detail-bar {
    width: 60px;
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    overflow: hidden;
    margin-left: 8px;
}
.compare-detail-fill {
    height: 100%;
    border-radius: 2px;
}

.compare-ia-mini {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    font-size: 0.85em;
    line-height: 1.6;
    white-space: pre-wrap;
    max-height: 300px;
    overflow-y: auto;
}

/* ============================================================
   FORM
   ============================================================ */

.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    font-size: 0.95em;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

input, select, textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1em;
    transition: border-color 0.2s;
    font-family: inherit;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
}

button[type="submit"] {
    width: 100%;
    padding: 16px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    margin-top: 10px;
}
button[type="submit"]:hover { background: var(--primary-dark); }
button[type="submit"]:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-secondary {
    padding: 12px 24px;
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.2s;
}
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); }

/* Score */
.score-card { text-align: center; }
.score-container { margin: 20px 0; }
.score-circle {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 8px solid var(--border);
    margin-bottom: 16px;
}
.score-value { font-size: 3em; font-weight: 800; line-height: 1; }
.score-label { font-size: 1.2em; color: var(--muted); }
.score-verdict { font-size: 1.3em; font-weight: 600; margin-bottom: 20px; }

.score-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    text-align: left;
    max-width: 600px;
    margin: 0 auto;
}
.score-item {
    padding: 10px 12px;
    background: var(--bg);
    border-radius: 6px;
    cursor: help;
    position: relative;
}
.score-item[title]:hover::after {
    content: attr(title);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.8em;
    white-space: normal;
    width: 250px;
    z-index: 100;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    line-height: 1.4;
    text-align: left;
}
.score-item-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 6px;
}
.score-item-label { color: var(--muted); font-size: 0.9em; }
.score-item-value { font-weight: 700; font-size: 0.9em; }

.score-bar-bg {
    width: 100%;
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
}
.score-bar-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.6s ease;
}

/* Map */
#map {
    height: 400px;
    border-radius: 8px;
    margin-bottom: 10px;
}
.map-legend { color: var(--muted); font-size: 0.9em; }

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.stat-box {
    text-align: center;
    padding: 16px;
    background: var(--bg);
    border-radius: 8px;
}
.stat-value { font-size: 1.8em; font-weight: 800; color: var(--primary); }
.stat-label { font-size: 0.85em; color: var(--muted); margin-top: 4px; }

/* IA Analysis */
.ia-analysis {
    line-height: 1.8;
    white-space: pre-wrap;
}

/* Actions */
.actions-card { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* Utility */
.hidden { display: none; }

/* Score colors */
.score-high { border-color: var(--success); }
.score-high .score-value { color: var(--success); }
.score-mid { border-color: var(--warning); }
.score-mid .score-value { color: var(--warning); }
.score-low { border-color: var(--danger); }
.score-low .score-value { color: var(--danger); }

/* Print */
@media print {
    header { padding: 20px 0; }
    .actions-card { display: none !important; }
    #step-form { display: none !important; }
    #step-skeleton { display: none !important; }
    .card { box-shadow: none; border: 1px solid var(--border); break-inside: avoid; }
    #map { height: 300px; }
    .score-item[title]:hover::after { display: none; }
    body { background: white; }
    .compare-grid { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
}

/* Responsive */
@media (max-width: 600px) {
    .form-row { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .score-details { grid-template-columns: 1fr; }
    header h1 { font-size: 1.8em; }
    .actions-card { flex-direction: column; align-items: stretch; }
    .actions-card .btn-secondary { text-align: center; }
    .compare-grid { grid-template-columns: 1fr; }
}