:root {
    --bg-body: #f5f6fa;
    --bg-card: #fff;
    --bg-sidebar: #fff;
    --bg-topbar: #fff;
    --bg-input: #fafbfc;
    --bg-hover: #f1f3f8;
    --bg-active: #eef1ff;
    --text-primary: #2d3436;
    --text-secondary: #636e72;
    --text-muted: #b2bec3;
    --border: #f1f2f6;
    --border-input: #e0e3eb;
    --shadow: 0 1px 4px rgba(0,0,0,0.04);
    --primary: #5b78c7;
    --success: #00b894;
    --danger: #e17055;
    --warning: #fdcb6e;
    --table-hover: #f8f9fd;
}

body.dark {
    --bg-body: #1a1d23;
    --bg-card: #242830;
    --bg-sidebar: #1e2128;
    --bg-topbar: #1e2128;
    --bg-input: #2a2e36;
    --bg-hover: #2d3139;
    --bg-active: #2d3748;
    --text-primary: #e2e8f0;
    --text-secondary: #a0aec0;
    --text-muted: #718096;
    --border: #2d3139;
    --border-input: #3d4149;
    --shadow: 0 1px 4px rgba(0,0,0,0.2);
    --table-hover: #2a2e36;
    --primary: #7b9ce0;
    --success: #38d9a9;
    --danger: #f0806a;
    --warning: #fdd974;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background 0.2s, color 0.2s;
}

a { text-decoration: none; color: var(--primary); }
a:hover { text-decoration: underline; }

/* Login */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 16px;
}

.login-container { width: 100%; max-width: 400px; }

.login-box {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 32px 28px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

.login-box h1 {
    text-align: center;
    color: var(--primary);
    font-size: 24px;
    margin-bottom: 4px;
    font-weight: 600;
}

.login-box h2 {
    text-align: center;
    color: #888;
    font-size: 14px;
    font-weight: 400;
    margin-bottom: 24px;
}

/* ===== LAYOUT ===== */
.app { display: flex; min-height: 100vh; width: 100%; }

/* Sidebar */
.sidebar {
    width: 240px;
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 200;
    transition: left 0.25s ease;
}

.sidebar-brand {
    padding: 18px 20px 14px;
    border-bottom: 1px solid var(--border);
}

.sidebar-brand a {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.5px;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 10px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow-y: auto;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 14px;
    border-radius: 10px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.15s;
}

.sidebar-link:hover {
    background: var(--bg-hover);
    color: var(--primary);
    text-decoration: none;
}

.sidebar-link.active {
    background: var(--bg-active);
    color: var(--primary);
    font-weight: 600;
}

.sidebar-icon { font-size: 16px; width: 22px; text-align: center; flex-shrink: 0; }

.sidebar-sub {
    padding-left: 46px !important;
    font-size: 13px !important;
    color: var(--text-muted) !important;
}
.sidebar-sub:hover { color: var(--primary) !important; background: var(--bg-hover) !important; }
.sidebar-sub.active { color: var(--primary) !important; background: var(--bg-active) !important; }

.sidebar-logout { margin-top: auto; }
.sidebar-logout:hover { background: #fde8e8; color: var(--danger); }

.sidebar-user {
    padding: 12px 20px;
    border-top: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}

/* Sidebar overlay (mobile only) */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.4);
    z-index: 150;
    opacity: 0;
    transition: opacity 0.25s;
    -webkit-tap-highlight-color: transparent;
}

.sidebar-overlay.overlay-visible { display: block; opacity: 1; }

/* Main area */
.main {
    margin-left: 240px;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    width: 100%;
}

.main-content {
    flex: 1;
    padding: 24px;
    max-width: 1200px;
    width: 100%;
}

/* Topbar (mobile) */
.topbar {
    display: none;
    align-items: center;
    height: 52px;
    padding: 0 12px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    gap: 10px;
    flex-shrink: 0;
}

.topbar-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 12px 6px;
    -webkit-tap-highlight-color: transparent;
}

.topbar-toggle span {
    display: block;
    width: 22px;
    height: 2.5px;
    background: var(--text-secondary);
    border-radius: 2px;
    transition: 0.25s;
}

.topbar-toggle span + span { margin-top: 5px; }

.topbar-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.topbar-toggle.active span:nth-child(2) { opacity: 0; }
.topbar-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.topbar-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.topbar-user {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
    flex-shrink: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 120px;
}

/* Footer */
.footer {
    text-align: center;
    padding: 16px 24px;
    color: var(--text-muted);
    font-size: 12px;
    border-top: 1px solid var(--border);
    flex-shrink: 0;
}

/* ===== COMPONENTS ===== */

/* Dashboard */
.dashboard h1 { font-size: 22px; margin-bottom: 3px; font-weight: 600; color: var(--text-primary); }
.welcome { color: var(--text-muted); margin-bottom: 20px; font-size: 14px; }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 20px 14px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
    text-align: center;
    border-left: 4px solid;
    transition: transform 0.15s;
}

.stat-card:hover { transform: translateY(-1px); }
.stat-blue { border-color: var(--primary); }
.stat-green { border-color: var(--success); }
.stat-orange { border-color: var(--warning); }
.stat-purple { border-color: #a29bfe; }

.stat-number { font-size: 30px; font-weight: 700; color: var(--text-primary); }

.stat-label {
    color: var(--text-muted);
    margin-top: 3px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Card */
.card {
    background: var(--bg-card);
    border-radius: 12px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
    margin-bottom: 18px;
    overflow: hidden;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    gap: 10px;
}

.card-header h3 { font-size: 15px; color: var(--text-primary); font-weight: 600; }

.card-body { padding: 18px 20px; }

/* Table */
.table-wrap {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    vertical-align: middle;
}

.table th {
    background: var(--bg-input);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.5px;
}

.table tbody tr:hover { background: var(--table-hover); }

.table-hover tbody tr {
    cursor: pointer;
    transition: background 0.15s, box-shadow 0.15s;
}
.table-hover tbody tr:hover {
    background: var(--bg-active);
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
    position: relative;
}
.tr-link { cursor: pointer; }
.nombre-link { color: var(--primary); font-weight: 500; text-decoration: none; }
.nombre-link:hover { text-decoration: underline; }
.email-link { color: var(--text-secondary); text-decoration: none; font-size: 12px; }
.email-link:hover { color: var(--primary); text-decoration: underline; }
.phone-link { color: var(--text-primary); font-size: 13px; }
.text-nowrap { white-space: nowrap; }
.table-info {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
    padding: 0 4px;
}

/* Badge */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}
.badge-empresa { background: #e8f0fe; color: var(--primary); }
.badge-individual { background: #e8f8f5; color: var(--success); }

/* Actions dropdown */
.actions-dropdown { position: relative; display: inline-block; }
.btn-actions {
    width: 30px; height: 30px;
    border: none; border-radius: 6px;
    background: transparent;
    font-size: 18px; font-weight: 700;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
    transition: all 0.15s;
    display: flex; align-items: center; justify-content: center;
}
.btn-actions:hover { background: var(--bg-hover); color: var(--text-primary); }
.actions-menu {
    position: absolute;
    right: 0; top: 100%;
    min-width: 150px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
    z-index: 100;
    display: none;
    overflow: hidden;
    margin-top: 4px;
}
.actions-menu.show { display: block; }
.actions-menu a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    font-size: 13px;
    color: var(--text-primary);
    text-decoration: none;
    transition: background 0.1s;
    border-bottom: 1px solid var(--border);
}
.actions-menu a:last-child { border-bottom: none; }
.actions-menu a:hover { background: var(--bg-hover); }
.actions-menu a:last-child { color: var(--danger); }
.actions-icon { font-size: 14px; width: 18px; text-align: center; }

/* Pagination bar */
.pagination-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-top: 14px;
    flex-wrap: wrap;
}
.pagination-btns {
    display: flex;
    align-items: center;
    gap: 4px;
}
.page-num {
    font-size: 12px;
    color: var(--text-muted);
    padding: 0 6px;
    white-space: nowrap;
}
.per-page-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
}
.per-page-label select {
    padding: 3px 6px;
    border: 1px solid var(--border-input);
    border-radius: 4px;
    font-size: 12px;
    background: var(--bg-card);
    color: var(--text-primary);
    cursor: pointer;
}
.disabled {
    opacity: 0.4;
    pointer-events: none;
}
.pagination-info { font-size: 12px; }

/* Empty state */
.empty-state {
    text-align: center;
    padding: 50px 20px;
}
.empty-icon {
    color: var(--text-muted);
    opacity: 0.35;
    margin-bottom: 16px;
}
.empty-state h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}
.empty-state p { font-size: 13px; margin-bottom: 16px; }

/* Toast */
.toast-msg {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 1000;
    min-width: 260px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
    transform: translateX(120%);
    transition: transform 0.35s ease;
}
.toast-show { transform: translateX(0); }

/* Tabs */
.tabs { margin-top: 14px; }
.tab-nav {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--border);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.tab-btn {
    padding: 10px 18px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.15s;
    min-height: 44px;
}
.tab-btn:hover { color: var(--primary); background: var(--bg-hover); }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Contact items */
.contacto-item {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}
.contacto-item:last-child { border-bottom: none; }
.contacto-nombre {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.contacto-info {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 12px;
    color: var(--text-secondary);
}
@media (max-width: 480px) {
    .mobile-only { display: block; font-size: 12px; color: var(--text-muted); margin-top: 2px; }
    .table-info { font-size: 11px; }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    line-height: 1.4;
    text-align: center;
    min-height: 36px;
    -webkit-tap-highlight-color: transparent;
}

.btn:hover { text-decoration: none; filter: brightness(0.95); }
.btn:active { transform: scale(0.97); }

.btn-primary { background: var(--primary); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-warning { background: var(--warning); color: var(--text-primary); }
.btn-secondary { background: var(--border-input); color: var(--text-secondary); }
.btn-secondary:hover { background: var(--bg-hover); }
.btn-sm { padding: 5px 10px; font-size: 12px; border-radius: 6px; min-height: 30px; }
.btn-block { width: 100%; display: block; }
.btn-group { display: flex; gap: 4px; flex-wrap: wrap; }
.btn-group-center { justify-content: center; }

/* Form */
.form-group { margin-bottom: 14px; }

.form-group label {
    display: block;
    margin-bottom: 4px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 9px 12px;
    border: 1.5px solid var(--border-input);
    border-radius: 8px;
    font-size: 13px;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-input);
    transition: all 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg-card);
    box-shadow: 0 0 0 3px rgba(91,120,199,0.08);
}

.form-group textarea { resize: vertical; min-height: 70px; }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

/* Alert */
.alert {
    padding: 10px 14px;
    border-radius: 8px;
    margin-bottom: 14px;
    font-size: 13px;
    font-weight: 500;
}

.alert-error { background: #fde8e8; color: var(--danger); border: 1px solid #f5c6cb; }
.alert-success { background: #e8f8f5; color: var(--success); border: 1px solid #c3e6cb; }

/* Actions bar */
.actions-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 10px;
}

.actions-bar h1 { font-size: 20px; font-weight: 600; color: var(--text-primary); }

.actions-bar > div {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

/* Search */
.search-box {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.search-box input {
    padding: 7px 12px;
    border: 1.5px solid var(--border-input);
    border-radius: 8px;
    font-size: 13px;
    background: var(--bg-input);
    width: 200px;
    transition: all 0.2s;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg-card);
    box-shadow: 0 0 0 3px rgba(91,120,199,0.08);
}

/* Detail */
.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px 24px;
}

.detail-item {
    display: flex;
    flex-direction: column;
    padding: 7px 0;
    border-bottom: 1px solid var(--border);
}

.detail-item .label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    font-weight: 600;
}

.detail-item .value {
    font-size: 14px;
    color: var(--text-primary);
    margin-top: 2px;
    word-break: break-word;
}

/* Seguimiento */
.seguimiento-form {
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.seguimiento-form h4 { margin-bottom: 12px; font-size: 14px; color: var(--text-primary); font-weight: 600; }

.seguimiento-item { padding: 11px 0; border-bottom: 1px solid var(--border); }
.seguimiento-item:last-child { border-bottom: none; }

.seguimiento-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
    gap: 8px;
}

.seguimiento-tag {
    display: inline-block;
    background: var(--bg-hover);
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    color: var(--primary);
    flex-shrink: 0;
}

.seguimiento-meta { font-size: 12px; color: var(--text-muted); text-align: right; }
.seguimiento-texto { font-size: 13px; color: var(--text-primary); line-height: 1.5; }
.seguimiento-proximo { font-size: 11px; color: var(--warning); font-weight: 600; }

/* Historial */
.historial-form {
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.historial-form h4 { margin-bottom: 12px; font-size: 14px; color: var(--text-primary); font-weight: 600; }

.historial-item { padding: 12px 0; border-bottom: 1px solid var(--border); }
.historial-item:last-child { border-bottom: none; }

.historial-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 5px;
    gap: 8px;
}

.historial-tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    flex-shrink: 0;
}

.historial-tag-compra { background: #e8f8f5; color: var(--success); }
.historial-tag-contacto { background: var(--bg-active); color: var(--primary); }
.historial-tag-incidencia { background: #fde8e8; color: var(--danger); }
.historial-tag-nota { background: var(--bg-hover); color: var(--text-secondary); }
.historial-tag-llamada { background: #fff4e6; color: var(--danger); }
.historial-tag-email { background: #e8f0fe; color: var(--primary); }
.historial-tag-reunion { background: #f3e8ff; color: #a29bfe; }
.historial-tag-documento { background: #fff8e1; color: #d4a017; }
.historial-tag-otro { background: var(--bg-hover); color: var(--text-secondary); }

.historial-meta { font-size: 12px; color: var(--text-muted); text-align: right; }

.historial-body {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-primary);
    flex-wrap: wrap;
}

.historial-monto { font-weight: 700; color: var(--success); font-size: 13px; }
.historial-desc { font-size: 13px; color: var(--text-secondary); margin-top: 3px; line-height: 1.5; }

/* Import mapping */
.mapping-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 10px 16px;
}
.mapping-item {
    display: flex;
    flex-direction: column;
    gap: 3px;
}
.mapping-item label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}
.mapping-item select {
    padding: 7px 8px;
    border: 1.5px solid var(--border-input);
    border-radius: 7px;
    font-size: 12px;
    background: var(--bg-input);
    color: var(--text-primary);
    font-family: inherit;
}
.mapping-item select:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg-card);
    box-shadow: 0 0 0 3px rgba(91,120,199,0.08);
}

/* Filter panel */
.filter-panel {
    display: none;
    background: var(--bg-card);
    border: 1px solid var(--border-input);
    border-radius: 10px;
    padding: 12px 16px;
    margin-bottom: 14px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
    flex-wrap: wrap;
    gap: 6px 14px;
    position: relative;
    z-index: 50;
}
.filter-panel.filter-open { display: flex; }
.filter-title {
    width: 100%;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}
.filter-opt {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 13px;
    color: var(--text-primary);
    cursor: pointer;
    padding: 4px 0;
    user-select: none;
}
.filter-opt input { cursor: pointer; accent-color: var(--primary); }

/* Theme toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}
.theme-toggle input { display: none; }
.theme-slider {
    width: 36px;
    height: 20px;
    background: var(--border-input);
    border-radius: 10px;
    position: relative;
    transition: background 0.25s;
    flex-shrink: 0;
}
.theme-slider::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    background: #fff;
    border-radius: 50%;
    transition: left 0.25s;
}
.theme-toggle input:checked + .theme-slider { background: var(--primary); }
.theme-toggle input:checked + .theme-slider::after { left: 18px; }
.theme-label {
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
}

.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }

/* Calendar */
.cal-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}
.cal-header {
    text-align: center;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    padding: 6px 0;
    letter-spacing: 0.5px;
}
.cal-day {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    cursor: pointer;
    position: relative;
    transition: background 0.15s;
    min-height: 44px;
}
.cal-day:hover { background: var(--bg-hover); }
.cal-empty { cursor: default; }
.cal-empty:hover { background: transparent; }
.cal-num { font-size: 14px; font-weight: 500; color: var(--text-primary); }
.cal-today .cal-num {
    background: var(--primary);
    color: #fff;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}
.cal-has .cal-num { font-weight: 700; }
.cal-dot {
    width: 5px;
    height: 5px;
    background: var(--success);
    border-radius: 50%;
    margin-top: 2px;
}
.cal-active { background: var(--bg-active); }
.cal-active .cal-num { color: var(--primary); font-weight: 700; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .sidebar { width: 220px; }
    .main { margin-left: 220px; }
}

@media (max-width: 768px) {
    .sidebar { left: -240px; }
    .sidebar.sidebar-open { left: 0; }
    .main { margin-left: 0; }
    .topbar { display: flex; }
    .topbar-toggle { display: block; }
    .main-content { padding: 16px; }
    .form-row { grid-template-columns: 1fr; }
    .mapping-grid { grid-template-columns: 1fr; }
    .detail-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .actions-bar { flex-direction: column; align-items: stretch; }
    .actions-bar h1 { text-align: center; font-size: 18px; }
    .actions-bar > div { flex-direction: column; width: 100%; }
    .actions-bar > div .btn { width: 100%; }
    .search-box { width: 100%; }
    .search-box input { flex: 1; min-width: 0; width: 100%; }
    .card-header { flex-direction: column; align-items: flex-start; }
    .card-header .btn { align-self: flex-end; }
    .login-box { padding: 28px 20px; }
    .seguimiento-header, .historial-header { flex-wrap: wrap; }
    .seguimiento-meta, .historial-meta { text-align: left; width: 100%; }
    .footer { padding: 12px 16px; }
}

@media (max-width: 480px) {
    .sidebar { width: 260px; left: -260px; }
    .main-content { padding: 12px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .stat-card { padding: 12px 8px; }
    .stat-number { font-size: 20px; }
    .stat-label { font-size: 9px; letter-spacing: 0.3px; }
    .card-body { padding: 12px 12px; }
    .card-header { padding: 10px 12px; }
    .card-header h3 { font-size: 13px; }
    .table th, .table td { padding: 8px 6px; font-size: 11px; }
    .cal-num { font-size: 12px; }
    .cal-today .cal-num { width: 26px; height: 26px; font-size: 12px; }
    .btn { padding: 10px 16px; font-size: 14px; min-height: 44px; }
    .btn-sm { padding: 7px 10px; font-size: 12px; min-height: 36px; }
    .mapping-item select { padding: 10px 8px; font-size: 14px; }
    .dashboard h1 { font-size: 18px; }
    .welcome { font-size: 13px; }
    .login-box { padding: 24px 16px; }
    .login-box h1 { font-size: 20px; }
    .topbar-title { font-size: 14px; }
    .topbar-user { max-width: 90px; }
    .form-group label { font-size: 13px; }
    .form-group input,
    .form-group select,
    .form-group textarea { padding: 11px 10px; font-size: 14px; }
}

@media (max-width: 360px) {
    .main-content { padding: 8px; }
    .stats-grid { grid-template-columns: 1fr; }
    .card-body { padding: 10px 8px; }
    .card-header { padding: 8px 8px; }
    .table th, .table td { padding: 6px 4px; font-size: 10px; }
    .topbar-user { display: none; }
}