/* ═══════════════════════════════════════════════════════════════
   Gestión de Cuenca · Tesla 2S — Estilos
   ═══════════════════════════════════════════════════════════════ */

:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #dbeafe;
    --accent: #7c3aed;
    --accent-hover: #6d28d9;
    --success: #059669;
    --success-light: #d1fae5;
    --danger: #dc2626;
    --danger-light: #fee2e2;
    --warning: #d97706;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --radius: 10px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 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);
    --sidebar-width: 390px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--gray-100);
    color: var(--gray-800);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ─── Top bar ───────────────────────────────────────────────── */
.topbar {
    background: var(--gray-900);
    color: white;
    padding: 0 24px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    z-index: 1000;
}
.topbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 17px;
    font-weight: 600;
}
.topbar-brand i { color: #60a5fa; font-size: 18px; }
.topbar-tag {
    font-size: 11px;
    font-weight: 500;
    background: rgba(96, 165, 250, 0.2);
    color: #93bbfc;
    padding: 2px 8px;
    border-radius: 4px;
}
.topbar-subtitle { font-size: 13px; color: var(--gray-400); }

/* ─── Layout ────────────────────────────────────────────────── */
.layout { display: flex; flex: 1; overflow: hidden; }

/* ─── Sidebar ───────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background: white;
    border-right: 1px solid var(--gray-200);
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* ─── Cards ─────────────────────────────────────────────────── */
.card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 14px 16px;
    box-shadow: var(--shadow);
}
.card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}
.card-header h3 { font-size: 14px; font-weight: 600; color: var(--gray-800); flex: 1; }
.step-badge {
    width: 24px; height: 24px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    display: flex; align-items: center; justify-content: center;
    font-size: 12px; font-weight: 700; flex-shrink: 0;
}
.card-desc { font-size: 12px; color: var(--gray-500); line-height: 1.5; margin-bottom: 10px; }
.optional { font-weight: 400; color: var(--gray-400); font-size: 11px; }

.card-info { background: var(--gray-50); border-color: var(--gray-200); }
.card-info h4 { font-size: 12px; font-weight: 600; margin-bottom: 6px; color: var(--gray-600); }
.card-info ul { list-style: none; font-size: 11px; color: var(--gray-500); gap: 3px; display: flex; flex-direction: column; }
.card-info li::before { content: "•"; color: var(--primary); font-weight: bold; margin-right: 5px; }

/* ─── Upload ────────────────────────────────────────────────── */
.upload-zone {
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius);
    padding: 18px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background: var(--gray-50);
}
.upload-zone:hover, .upload-zone.dragover { border-color: var(--primary); background: var(--primary-light); }
.upload-icon { font-size: 28px; color: var(--gray-400); margin-bottom: 6px; }
.upload-zone:hover .upload-icon { color: var(--primary); }
.upload-zone p { font-size: 13px; font-weight: 500; color: var(--gray-600); }
.upload-zone span { font-size: 11px; color: var(--gray-400); }
.upload-status { margin-top: 8px; font-size: 12px; }

/* ─── Checkbox ──────────────────────────────────────────────── */
.checkbox-label {
    display: flex; align-items: center; gap: 6px;
    cursor: pointer; font-size: 12px; color: var(--gray-600); user-select: none;
}
.checkbox-label input[type="checkbox"] {
    width: 16px; height: 16px; accent-color: var(--primary); cursor: pointer;
}

/* ─── Bbox ──────────────────────────────────────────────────── */
.bbox-info {
    background: var(--gray-50);
    border-radius: 6px;
    padding: 8px 10px;
    font-size: 11px;
    font-family: 'Courier New', monospace;
}
.bbox-info .text-muted { color: var(--gray-400); font-family: 'Inter', sans-serif; font-size: 12px; }
.bbox-values { display: grid; grid-template-columns: auto 1fr; gap: 2px 8px; color: var(--gray-600); }
.bbox-label { color: var(--gray-400); font-family: 'Inter', sans-serif; font-size: 10px; }
.area-text { margin-top: 4px; font-family: 'Inter', sans-serif; font-size: 11px; color: var(--primary); font-weight: 500; }

/* ─── Forms ─────────────────────────────────────────────────── */
.form-group { margin-bottom: 10px; }
.form-group label {
    display: block; font-size: 12px; font-weight: 500;
    color: var(--gray-600); margin-bottom: 3px;
}
.form-group label i { margin-right: 4px; color: var(--primary); font-size: 11px; }
.form-select {
    width: 100%; padding: 7px 10px;
    border: 1px solid var(--gray-300); border-radius: 6px;
    font-size: 12px; font-family: inherit;
    background: white; color: var(--gray-700); cursor: pointer;
}
.form-select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 2px rgba(37,99,235,.1); }
.form-select-sm { padding: 5px 6px; font-size: 11px; min-width: 90px; }
.form-input {
    width: 100%; padding: 7px 10px;
    border: 1px solid var(--gray-300); border-radius: 6px;
    font-size: 12px; font-family: inherit;
    background: white; color: var(--gray-700);
}
.form-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 2px rgba(37,99,235,.1); }
.form-input::placeholder { color: var(--gray-400); }

/* ─── Action groups ─────────────────────────────────────────── */
.action-group {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 0;
    border-bottom: 1px solid var(--gray-100);
}
.action-group:last-of-type { border-bottom: none; }
.action-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--gray-700);
    min-width: 105px;
    flex-shrink: 0;
}
.action-label i { color: var(--primary); margin-right: 4px; width: 14px; text-align: center; }
.btn-row { display: flex; gap: 4px; flex: 1; align-items: center; }

/* ─── Buttons ───────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 5px;
    padding: 8px 12px; border: none; border-radius: 6px;
    font-size: 12px; font-weight: 600; font-family: inherit;
    cursor: pointer; transition: all 0.15s; white-space: nowrap;
}
.btn-sm { padding: 6px 10px; font-size: 11px; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }
.btn-primary:disabled { background: var(--gray-300); color: var(--gray-500); cursor: not-allowed; }
.btn-secondary { background: var(--gray-100); color: var(--gray-700); border: 1px solid var(--gray-300); }
.btn-secondary:hover:not(:disabled) { background: var(--gray-200); }
.btn-secondary:disabled { background: var(--gray-100); color: var(--gray-400); cursor: not-allowed; }
.btn-accent { background: var(--accent); color: white; }
.btn-accent:hover:not(:disabled) { background: var(--accent-hover); }
.btn-accent:disabled { background: var(--gray-300); color: var(--gray-500); cursor: not-allowed; }
.btn-danger { background: var(--danger) !important; color: white !important; }
.btn-icon {
    background: none; border: none; cursor: pointer; color: var(--gray-400);
    font-size: 14px; padding: 4px; transition: color 0.15s;
}
.btn-icon:hover { color: var(--gray-700); }

/* ─── Fill tooltip ──────────────────────────────────────────── */
.fill-tooltip { margin-top: 6px; font-size: 11px; color: var(--gray-600); line-height: 1.4; animation: fadeInTip .2s ease; }
.fill-tip-content {
    background: var(--gray-50); border-left: 3px solid var(--primary);
    border-radius: 0 6px 6px 0; padding: 8px 12px;
}
.fill-tip-content strong { display: block; margin-bottom: 4px; font-size: 11.5px; color: var(--gray-800); }
.fill-tip-content strong i { color: var(--primary); margin-right: 3px; }
.fill-tip-content ul { margin: 0; padding-left: 16px; }
.fill-tip-content li { margin-bottom: 2px; }
.fill-tip-content code { background: var(--gray-200); padding: 1px 4px; border-radius: 3px; font-size: 10px; }
@keyframes fadeInTip { from { opacity: 0; transform: translateY(-3px); } to { opacity: 1; transform: translateY(0); } }

/* ─── Profile chart ─────────────────────────────────────────── */
#profileChart { width: 100%; border-radius: 6px; border: 1px solid var(--gray-200); }
.profile-stats {
    display: flex; gap: 12px; margin-top: 8px; font-size: 11px; color: var(--gray-600); flex-wrap: wrap;
}
.profile-stats strong { color: var(--gray-800); }

/* ─── Fill comparison stats ─────────────────────────────────── */
.fill-stats-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 8px;
}
.stat-item {
    background: var(--gray-50); border-radius: 6px; padding: 8px 10px; text-align: center;
}
.stat-value { display: block; font-size: 16px; font-weight: 700; color: var(--primary); }
.stat-label { font-size: 10px; color: var(--gray-500); }
.fill-legend { font-size: 11px; color: var(--gray-500); display: flex; align-items: center; gap: 6px; }
.fill-legend-color {
    display: inline-block; width: 14px; height: 14px; border-radius: 3px;
    background: linear-gradient(135deg, rgba(30,100,200,0.4), rgba(30,100,255,0.9));
}

/* ─── Credits ───────────────────────────────────────────────── */
.credits { padding: 12px 16px; border-top: 1px solid var(--gray-200); margin-top: auto; }
.credits-title {
    font-size: 10px; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.05em; color: var(--gray-400); margin-bottom: 6px;
}
.credits-line { display: flex; flex-direction: column; margin-bottom: 3px; }
.credits-role { font-size: 10px; color: var(--gray-400); }
.credits-name { font-size: 11px; font-weight: 500; color: var(--gray-600); }

/* ─── Status messages ───────────────────────────────────────── */
.download-status { margin-top: 8px; font-size: 12px; }
.success { color: var(--success); background: var(--success-light); padding: 8px 10px; border-radius: 6px; }
.error { color: var(--danger); background: var(--danger-light); padding: 8px 10px; border-radius: 6px; }
.success small, .error small { display: block; margin-top: 2px; }

/* ─── Map ───────────────────────────────────────────────────── */
.map-container { flex: 1; position: relative; }
#map { width: 100%; height: 100%; }

/* ─── Loading overlay ───────────────────────────────────────── */
.overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.5);
    display: none; align-items: center; justify-content: center;
    z-index: 10000;
}
.overlay.active { display: flex; }
.spinner-box {
    background: white; border-radius: 12px;
    padding: 28px 36px; text-align: center;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.spinner {
    width: 40px; height: 40px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 12px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.spinner-box p { font-size: 13px; color: var(--gray-600); font-weight: 500; }

/* ─── Responsive ────────────────────────────────────────────── */
@media (max-width: 768px) {
    .layout { flex-direction: column; }
    .sidebar { width: 100%; min-width: 100%; max-height: 50vh; border-right: none; border-bottom: 1px solid var(--gray-200); }
    .topbar-subtitle { display: none; }
}