/* ============================================
   GYM EVOLUTION - SISTEMA DE ESTILOS
   Tema Oceánico Unificado
   ============================================ */

:root {
    --color-primary: #3498db;
    --color-primary-dark: #2980b9;
    --color-primary-light: #5dade2;
    --color-secondary: #4caf50;
    --color-danger: #d32f2f;
    --color-warning: #ff9800;
    --color-info: #2196F3;
    --color-success: #4caf50;
    
    --bg-body: #f5f7fa;
    --bg-card: #ffffff;
    --bg-navbar: linear-gradient(135deg, #3498db 0%, #2c3e50 100%);
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --text-light: #ecf0f1;
    
    --border-color: #e1e8ed;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.2);
    
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 15px;
    --spacing-lg: 20px;
    --spacing-xl: 30px;
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #030303;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Burbujas decorativas de fondo - igual que index.php */
body::before,
body::after {
    content: '';
    position: fixed;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(52, 152, 219, 0.5), rgba(52, 152, 219, 0.1));
    opacity: 0.3;
    z-index: 0;
    pointer-events: none;
}

body::before {
    width: 150px;
    height: 150px;
    top: 10%;
    left: 5%;
}

body::after {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 10%;
}

.navbar {
    background: var(--bg-navbar);
    color: var(--text-light);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-normal);
    width: 100%;
    margin: 0;
    position: relative;
}

.navbar h1 {
    font-size: 22px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.navbar-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.navbar-links a,
.navbar-links span {
    color: var(--text-light);
    text-decoration: none;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    font-size: 13px;
    white-space: nowrap;
}

.navbar-links a:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.logout,
.btn-back {
    background: var(--color-danger);
    cursor: pointer;
}

.logout:hover,
.btn-back:hover {
    background: #b71c1c;
}

.container {
    max-width: 1400px;
    margin: var(--spacing-lg) auto;
    padding: 0 var(--spacing-lg);
    position: relative;
    z-index: 10;
}

.panel,
.card,
.alerts-section {
    background: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.panel:hover,
.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.alert-box {
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-lg);
    border-left: 5px solid;
    animation: slideIn 0.3s ease;
    backdrop-filter: blur(10px);
    font-weight: 500;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.alert-box h4 {
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
    font-size: 15px;
}

.alert-box p {
    margin-bottom: 5px;
    font-size: 14px;
}

.alert-box.warning {
    background: linear-gradient(135deg, #fff3cd 0%, #ffe69c 100%);
    border-left-color: #ff9800;
    color: #856404;
    box-shadow: 0 4px 12px rgba(255, 152, 0, 0.15);
}

.alert-box.danger {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    border-left-color: #d32f2f;
    color: #721c24;
    box-shadow: 0 4px 12px rgba(211, 47, 47, 0.15);
}

.alert-box.success {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    border-left-color: #4caf50;
    color: #155724;
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.15);
}

.alert-box.info {
    background: linear-gradient(135deg, #d1ecf1 0%, #bee5eb 100%);
    border-left-color: #2196F3;
    color: #0c5460;
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.15);
}

.menu {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.menu-item {
    background: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    border: 2px solid transparent;
}

.menu-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.menu-item a {
    text-decoration: none;
    color: var(--text-primary);
    display: block;
}

.menu-item h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 18px;
}

.menu-item p {
    color: var(--text-secondary);
    font-size: 14px;
}

.stats,
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-card,
.stat-box {
    background: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border-left: 4px solid var(--color-primary);
}

.stat-card:hover,
.stat-box:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.stat-card h4,
.stat-box h4 {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-card .number,
.stat-card .valor,
.stat-box .number,
.stat-box .valor {
    font-size: 36px;
    font-weight: 700;
    color: var(--color-primary);
    margin: var(--spacing-sm) 0;
}

.stat-card small,
.stat-box small {
    color: var(--text-secondary);
    font-size: 13px;
}

.table,
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-md);
    background: var(--bg-card);
}

thead {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
}

th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    font-size: 14px;
}

td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

tbody tr:hover {
    background: #f9f9f9;
    transition: background-color var(--transition-fast);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    font-weight: 500;
    font-size: 14px;
}

input,
select,
textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-family: inherit;
    transition: all var(--transition-fast);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.btn,
button {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all var(--transition-fast);
    display: inline-block;
}

.btn-primary,
button[type="submit"],
.btn {
    background: var(--color-primary);
    color: white;
}

.btn-primary:hover,
button[type="submit"]:hover,
.btn:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-success {
    background: var(--color-success);
    color: white;
}

.btn-success:hover {
    background: #45a049;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-danger {
    background: var(--color-danger);
    color: white;
}

.btn-danger:hover {
    background: #b71c1c;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-edit,
.btn-warning {
    background: var(--color-warning);
    color: white;
}

.btn-edit:hover,
.btn-warning:hover {
    background: #f57c00;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-delete {
    background: var(--color-danger);
    color: white;
}

.btn-delete:hover {
    background: #b71c1c;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 500px;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-content h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.exito,
.error,
.total {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 500;
    animation: slideIn 0.3s ease;
}

.exito {
    background: #d4edda;
    color: #155724;
    border-left: 4px solid var(--color-success);
}

.error {
    background: #f8d7da;
    color: #721c24;
    border-left: 4px solid var(--color-danger);
}

.total {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    font-weight: bold;
    font-size: 18px;
    color: #155724;
    border-left: 4px solid var(--color-success);
}

.bajo-stock {
    color: var(--color-danger);
    font-weight: bold;
}

.estado-cerrado {
    background: #e8f5e9;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    color: #2e7d32;
    font-weight: bold;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.header h2 {
    color: var(--color-primary);
    font-size: 28px;
}

.filtros {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    align-items: center;
    box-shadow: var(--shadow-sm);
}

.filtros select,
.filtros input,
.filtros button {
    padding: 10px 15px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
}

.filtros button {
    background: var(--color-primary);
    color: white;
    cursor: pointer;
    border: none;
    font-weight: 500;
}

.filtros button:hover {
    background: var(--color-primary-dark);
}

.chart-container {
    background: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
}

.chart-container h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

#ventasChart {
    max-height: 400px;
}

.resumen-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.payment-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.payment-box {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-info);
}

.payment-box h5 {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
}

.payment-box .amount {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-primary);
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.pulse-animation {
    animation: pulse 2s infinite;
}

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-body);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-dark);
}

/* Logo centrado - actualizado para coincidir con index.php */
.logo-img {
    height: 80px;
    width: auto;
    display: block;
    margin: 0 auto;
    border-radius: 12px;
    box-shadow: 0 8px 20px rgba(52, 152, 219, 0.3);
    transition: transform 0.3s ease;
    position: relative;
}

.logo-img:hover {
    transform: scale(1.05);
}

.logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
    width: 100%;
}

/* Responsive del logo */
@media (max-width: 768px) {
    .logo-img {
        height: 70px;
    }
}

@media (max-width: 480px) {
    .logo-img {
        height: 65px;
    }
}

@media (max-width: 1024px) {
    .container {
        max-width: 100%;
        padding: 0 var(--spacing-md);
    }
    
    .menu,
    .stats,
    .cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .resumen-stats,
    .payment-summary {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

    body {
        font-size: 13px;
    }
    
    /* Ajustar burbujas en móvil */
    body::before {
        width: 100px;
        height: 100px;
    }
    
    body::after {
        width: 80px;
        height: 80px;
    }

    .navbar {
        flex-direction: column;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm) var(--spacing-md);
        position: relative;
    }

    .navbar h1 {
        font-size: 18px;
        width: 100%;
        text-align: center;
    }
    
    .navbar-links {
        flex-direction: row;
        width: 100%;
        gap: var(--spacing-xs);
        justify-content: center;
        flex-wrap: wrap;
    }

    .navbar-links a,
    .navbar-links span {
        padding: 8px 12px;
        font-size: 12px;
        text-align: center;
        flex: 0 1 auto;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
        margin: var(--spacing-sm) auto;
    }
    
    .menu,
    .stats,
    .cards {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .resumen-stats,
    .payment-summary {
        grid-template-columns: 1fr;
    }
    
    .filtros {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .filtros select,
    .filtros input,
    .filtros button {
        width: 100%;
        font-size: 13px;
    }
    
    table {
        font-size: 11px;
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
    
    th, td {
        padding: 8px 6px;
    }

    .modal-content {
        width: 95%;
        max-width: 100%;
        margin: var(--spacing-sm);
        padding: var(--spacing-md);
    }

    .btn, button {
        padding: 10px 12px !important;
        font-size: 13px !important;
    }

    .stat-card,
    .stat-box {
        padding: var(--spacing-md);
    }
    
    .stat-card .number,
    .stat-card .valor,
    .stat-box .number,
    .stat-box .valor {
        font-size: 28px;
    }

    .alert-box {
        padding: var(--spacing-md);
        font-size: 13px;
    }

    .alert-box h4 {
        font-size: 14px;
    }

    input,
    select,
    textarea {
        padding: 10px !important;
        font-size: 13px !important;
    }

    label {
        font-size: 13px !important;
    }

    .header {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .header h2 {
        font-size: 22px;
    }

    .menu-item {
        padding: var(--spacing-lg);
    }
    
    .menu-item h3 {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 13px;
    }

    body {
        font-size: 12px;
    }
    
    /* Burbujas más pequeñas en móviles pequeños */
    body::before {
        width: 80px;
        height: 80px;
    }
    
    body::after {
        width: 60px;
        height: 60px;
    }

    .navbar {
        padding: var(--spacing-sm);
    }

    .navbar h1 {
        font-size: 16px;
    }

    .navbar-links {
        gap: 5px;
    }

    .navbar-links a,
    .navbar-links span {
        padding: 6px 8px;
        font-size: 11px;
    }

    .container {
        padding: 0 10px;
        margin: 10px auto;
    }

    .panel,
    .card,
    .alerts-section {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-sm);
        border-radius: var(--radius-md);
    }

    .header h2 {
        font-size: 18px;
    }

    .menu-item {
        padding: var(--spacing-md);
    }
    
    .menu-item h3 {
        font-size: 15px;
    }
    
    .menu-item p {
        font-size: 12px;
    }

    table {
        font-size: 10px;
    }

    th, td {
        padding: 6px 4px;
        font-size: 10px;
    }
    
    thead {
        font-size: 10px;
    }

    .btn, button {
        padding: 8px 10px !important;
        font-size: 12px !important;
        border-radius: 6px;
    }

    input,
    select,
    textarea {
        padding: 8px !important;
        font-size: 12px !important;
        border-radius: 6px;
    }

    label {
        font-size: 12px !important;
        margin-bottom: 5px;
    }
    
    .stat-card .number,
    .stat-card .valor,
    .stat-box .number,
    .stat-box .valor {
        font-size: 24px;
    }
    
    .stat-card h4,
    .stat-box h4 {
        font-size: 11px;
    }
    
    .payment-box .amount {
        font-size: 20px;
    }
    
    .payment-box h5 {
        font-size: 11px;
    }
    
    .alert-box {
        padding: 10px;
        font-size: 12px;
    }
    
    .alert-box h4 {
        font-size: 13px;
    }
    
    .alert-box p {
        font-size: 11px;
    }
    
    .modal-content {
        padding: var(--spacing-md);
        border-radius: var(--radius-md);
    }
    
    .modal-content h3 {
        font-size: 16px;
        margin-bottom: var(--spacing-md);
    }
    
    .filtros {
        padding: var(--spacing-sm);
    }
    
    .chart-container {
        padding: var(--spacing-md);
    }
    
    .form-group {
        margin-bottom: 12px;
    }
}