/* ============================================================
   GymCenter — Main Stylesheet
   ============================================================ */

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #dbeafe;
    --success: #16a34a;
    --success-light: #dcfce7;
    --warning: #d97706;
    --warning-light: #fef3c7;
    --danger: #dc2626;
    --danger-light: #fee2e2;
    --info: #0891b2;
    --info-light: #cffafe;
    --dark: #1e293b;
    --dark-sidebar: #0f172a;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --white: #ffffff;
    --sidebar-width: 250px;
    --header-height: 60px;
    --radius: 8px;
    --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(0,0,0,0.1), 0 2px 4px rgba(0,0,0,0.06);
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--dark);
    background: var(--gray-100);
}

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

img { max-width: 100%; }

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--dark-sidebar);
    color: var(--gray-300);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    overflow-y: auto;
    z-index: 100;
    transition: transform 0.3s;
}

.sidebar-header {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h1 {
    font-size: 20px;
    color: var(--white);
    font-weight: 700;
    letter-spacing: 1px;
}

.sidebar-header small {
    color: var(--gray-400);
    font-size: 11px;
}

.sidebar-nav {
    padding: 15px 0;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    color: var(--gray-400);
    font-size: 14px;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background: rgba(255,255,255,0.05);
    color: var(--white);
    border-left-color: var(--primary);
}

.sidebar-nav a svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.sidebar-nav .nav-divider {
    height: 1px;
    background: rgba(255,255,255,0.08);
    margin: 10px 20px;
}

/* Main content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.top-header {
    height: var(--header-height);
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 25px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.top-header .page-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
}

.top-header .user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--gray-500);
    font-size: 13px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--dark);
    cursor: pointer;
    padding: 5px;
}

.menu-toggle svg {
    width: 24px;
    height: 24px;
}

/* Content area */
.content {
    padding: 25px;
    flex: 1;
}

/* ============================================================
   CARDS
   ============================================================ */
.card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--gray-200);
}

.card-header h2 {
    font-size: 16px;
    font-weight: 600;
}

/* KPI Cards */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 15px;
    margin-bottom: 25px;
}

.kpi-card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.kpi-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.kpi-icon svg {
    width: 24px;
    height: 24px;
}

.kpi-icon.blue { background: var(--primary-light); color: var(--primary); }
.kpi-icon.green { background: var(--success-light); color: var(--success); }
.kpi-icon.yellow { background: var(--warning-light); color: var(--warning); }
.kpi-icon.red { background: var(--danger-light); color: var(--danger); }
.kpi-icon.cyan { background: var(--info-light); color: var(--info); }

.kpi-data h3 {
    font-size: 24px;
    font-weight: 700;
    line-height: 1.2;
}

.kpi-data p {
    font-size: 12px;
    color: var(--gray-500);
    margin-top: 2px;
}

/* ============================================================
   TABLES
   ============================================================ */
.table-responsive {
    overflow-x: auto;
}

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

table th,
table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
    font-size: 13px;
}

table th {
    background: var(--gray-50);
    font-weight: 600;
    color: var(--gray-600);
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.5px;
}

table tbody tr:hover {
    background: var(--gray-50);
}

table td .actions {
    display: flex;
    gap: 6px;
}

/* ============================================================
   BADGES
   ============================================================ */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-info { background: var(--info-light); color: var(--info); }
.badge-secondary { background: var(--gray-200); color: var(--gray-600); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    line-height: 1.4;
}

.btn:hover { opacity: 0.9; }

.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-dark); color: var(--white); }
.btn-success { background: var(--success); color: var(--white); }
.btn-warning { background: var(--warning); color: var(--white); }
.btn-danger { background: var(--danger); color: var(--white); }
.btn-secondary { background: var(--gray-200); color: var(--gray-700); }
.btn-outline { background: var(--white); color: var(--gray-600); border-color: var(--gray-300); }
.btn-outline:hover { background: var(--gray-50); }

.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-lg { padding: 12px 24px; font-size: 15px; }

/* ============================================================
   FORMS
   ============================================================ */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    font-size: 13px;
    color: var(--gray-700);
}

.form-group label .required {
    color: var(--danger);
}

.form-control {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 14px;
    color: var(--dark);
    background: var(--white);
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
}

textarea.form-control {
    min-height: 80px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.form-inline {
    display: flex;
    gap: 10px;
    align-items: flex-end;
    flex-wrap: wrap;
}

.form-inline .form-group {
    margin-bottom: 0;
}

/* ============================================================
   FLASH MESSAGES
   ============================================================ */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success { background: var(--success-light); color: var(--success); border: 1px solid #bbf7d0; }
.alert-danger { background: var(--danger-light); color: var(--danger); border: 1px solid #fecaca; }
.alert-warning { background: var(--warning-light); color: var(--warning); border: 1px solid #fde68a; }
.alert-info { background: var(--info-light); color: var(--info); border: 1px solid #a5f3fc; }

/* ============================================================
   FILTERS BAR
   ============================================================ */
.filters {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.filters .form-control {
    width: auto;
    min-width: 180px;
}

.filters .search-input {
    min-width: 250px;
}

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination {
    display: flex;
    gap: 5px;
    justify-content: center;
    margin-top: 20px;
    flex-wrap: wrap;
}

.pagination .btn.active {
    background: var(--primary);
    color: var(--white);
}

/* ============================================================
   TABS
   ============================================================ */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--gray-200);
    margin-bottom: 20px;
}

.tab {
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-500);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.2s;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
}

.tab:hover { color: var(--primary); }

.tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ============================================================
   SCHEDULE GRID
   ============================================================ */
.schedule-grid {
    display: grid;
    grid-template-columns: 80px repeat(6, 1fr);
    gap: 1px;
    background: var(--gray-200);
    border-radius: var(--radius);
    overflow: hidden;
    font-size: 12px;
}

.schedule-grid .cell {
    background: var(--white);
    padding: 8px;
    min-height: 60px;
}

.schedule-grid .cell-header {
    background: var(--gray-50);
    font-weight: 600;
    text-align: center;
    font-size: 12px;
    color: var(--gray-600);
    display: flex;
    align-items: center;
    justify-content: center;
}

.schedule-grid .cell-time {
    background: var(--gray-50);
    font-weight: 500;
    color: var(--gray-500);
    display: flex;
    align-items: center;
    justify-content: center;
}

.schedule-item {
    background: var(--primary-light);
    color: var(--primary-dark);
    padding: 4px 6px;
    border-radius: 4px;
    margin-bottom: 2px;
    font-size: 11px;
    line-height: 1.3;
}

/* ============================================================
   LOGIN PAGE
   ============================================================ */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dark-sidebar);
}

.login-box {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    width: 100%;
    max-width: 380px;
    box-shadow: var(--shadow-md);
}

.login-box h1 {
    text-align: center;
    font-size: 24px;
    margin-bottom: 5px;
    color: var(--dark);
}

.login-box p {
    text-align: center;
    color: var(--gray-500);
    margin-bottom: 25px;
    font-size: 14px;
}

.login-box .btn {
    width: 100%;
    justify-content: center;
    padding: 12px;
    font-size: 15px;
}

/* ============================================================
   FICHA SOCIO
   ============================================================ */
.socio-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 25px;
}

.socio-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    flex-shrink: 0;
}

.socio-info h2 {
    font-size: 22px;
    margin-bottom: 3px;
}

.socio-info p {
    color: var(--gray-500);
    font-size: 13px;
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.detail-item {
    padding: 10px;
    background: var(--gray-50);
    border-radius: 6px;
}

.detail-item label {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--gray-500);
    letter-spacing: 0.5px;
    display: block;
    margin-bottom: 3px;
}

.detail-item span {
    font-size: 14px;
    font-weight: 500;
}

/* ============================================================
   UTILITIES
   ============================================================ */
.text-right { text-align: right; }
.text-center { text-align: center; }
.text-muted { color: var(--gray-500); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.mb-0 { margin-bottom: 0; }
.mb-10 { margin-bottom: 10px; }
.mb-20 { margin-bottom: 20px; }
.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-10 { gap: 10px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--gray-400);
}

.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: 10px;
}

.empty-state p {
    font-size: 15px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .menu-toggle {
        display: block;
    }

    .content {
        padding: 15px;
    }

    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }

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

    .filters {
        flex-direction: column;
        align-items: stretch;
    }

    .filters .form-control,
    .filters .search-input {
        width: 100%;
        min-width: auto;
    }

    .schedule-grid {
        font-size: 10px;
    }

    .socio-header {
        flex-direction: column;
        text-align: center;
    }

    .top-header .user-info span {
        display: none;
    }
}

/* Overlay for mobile sidebar */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
}

.sidebar-overlay.active {
    display: block;
}

/* ============================================================
   PERMISSIONS MATRIX
   ============================================================ */
.permissions-matrix th,
.permissions-matrix td {
    padding: 8px 10px;
}

.permissions-matrix .perm-header {
    font-size: 10px;
    padding: 4px 6px;
    min-width: 30px;
}

.perm-yes {
    color: var(--success);
    font-weight: 700;
    font-size: 14px;
}

.perm-no {
    color: var(--gray-300);
    font-size: 14px;
}

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

/* ============================================================
   AUDIT DETAIL
   ============================================================ */
.audit-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    padding: 10px;
    background: var(--gray-50);
    border-radius: 6px;
}

.audit-detail-section strong {
    display: block;
    font-size: 11px;
    text-transform: uppercase;
    color: var(--gray-500);
    margin-bottom: 5px;
}

.audit-detail pre {
    font-size: 12px;
    background: var(--white);
    padding: 10px;
    border-radius: 4px;
    border: 1px solid var(--gray-200);
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    margin: 0;
}

@media (max-width: 768px) {
    .audit-detail {
        grid-template-columns: 1fr;
    }
}