/* Variables de colores */
:root {
    --neon-green: #39ff14;
    --neon-purple: #bc13fe;
    --dark-bg: #0a0a0a;
    --card-bg: #1a1a1a;
    --text-light: #f0f0f0;
    --text-muted: #888;
    --success: #00cc66;
    --warning: #ffcc00;
    --danger: #ff3333;
}

/* Reset y estilos base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-light);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header futurista */
.futuristic-header {
    background: linear-gradient(135deg, rgba(57, 255, 20, 0.1), rgba(188, 19, 254, 0.1));
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(57, 255, 20, 0.3);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.futuristic-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--neon-green), var(--neon-purple));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--neon-green), var(--neon-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo span {
    font-weight: 300;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

nav a:hover {
    color: var(--neon-green);
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--neon-purple);
    transition: width 0.3s;
}

nav a:hover::after {
    width: 100%;
}

.mobile-menu {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Dashboard */
.dashboard {
    padding: 3rem 0;
}

.dashboard h2 {
    margin-bottom: 2rem;
    font-size: 2rem;
    text-align: center;
    background: linear-gradient(90deg, var(--neon-green), var(--neon-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    background: var(--card-bg);
    border-radius: 10px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid rgba(57, 255, 20, 0.1);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(57, 255, 20, 0.2);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--neon-green), var(--neon-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-info h3 {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--neon-green), var(--neon-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Formulario */
.payment-form {
    padding: 3rem 0;
    background: rgba(26, 26, 26, 0.7);
}

.payment-form h2 {
    margin-bottom: 2rem;
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group select {
    padding: 0.75rem;
    border: 1px solid rgba(57, 255, 20, 0.3);
    border-radius: 5px;
    background: rgba(10, 10, 10, 0.7);
    color: var(--text-light);
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--neon-purple);
    box-shadow: 0 0 10px rgba(188, 19, 254, 0.5);
}

.form-actions {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
}

.btn-primary, .btn-secondary, .btn-danger {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background: linear-gradient(135deg, var(--neon-green), var(--neon-purple));
    color: var(--dark-bg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(57, 255, 20, 0.4);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--neon-purple);
    color: var(--neon-purple);
}

.btn-secondary:hover {
    background: rgba(188, 19, 254, 0.1);
}

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

.btn-danger:hover {
    background: #ff1a1a;
    transform: translateY(-2px);
}

/* Lista de pagos */
.payments-list {
    padding: 3rem 0;
}

.payments-list h2 {
    margin-bottom: 2rem;
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(57, 255, 20, 0.1);
}

th {
    background: rgba(57, 255, 20, 0.1);
    font-weight: 600;
}

tr:hover {
    background: rgba(57, 255, 20, 0.05);
}

.status-badge {
    padding: 0.25rem 0.5rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.status-badge.paid {
    background: rgba(0, 204, 102, 0.2);
    color: var(--success);
}

.status-badge.pending {
    background: rgba(255, 204, 0, 0.2);
    color: var(--warning);
}

.status-badge.overdue {
    background: rgba(255, 51, 51, 0.2);
    color: var(--danger);
}

.actions {
    display: flex;
    gap: 0.5rem;
}

.btn-edit, .btn-delete {
    padding: 0.5rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-edit {
    background: rgba(57, 255, 20, 0.1);
    color: var(--neon-green);
}

.btn-edit:hover {
    background: rgba(57, 255, 20, 0.3);
}

.btn-delete {
    background: rgba(255, 51, 51, 0.1);
    color: var(--danger);
}

.btn-delete:hover {
    background: rgba(255, 51, 51, 0.3);
}

.no-data {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
}

/* Footer */
.futuristic-footer {
    background: linear-gradient(135deg, rgba(57, 255, 20, 0.05), rgba(188, 19, 254, 0.05));
    padding: 3rem 0 1rem;
    border-top: 1px solid rgba(57, 255, 20, 0.2);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3, .footer-section h4 {
    margin-bottom: 1rem;
    background: linear-gradient(90deg, var(--neon-green), var(--neon-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: var(--neon-green);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(57, 255, 20, 0.1);
    color: var(--text-light);
    transition: all 0.3s;
}

.social-links a:hover {
    background: linear-gradient(135deg, var(--neon-green), var(--neon-purple));
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(57, 255, 20, 0.1);
    color: var(--text-muted);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 5px 25px rgba(57, 255, 20, 0.3);
    border: 1px solid rgba(57, 255, 20, 0.3);
}

.modal h3 {
    margin-bottom: 1rem;
    background: linear-gradient(90deg, var(--neon-green), var(--neon-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    justify-content: flex-end;
}

/* Responsive */
@media (max-width: 768px) {
    .futuristic-header nav {
        display: none;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    th, td {
        padding: 0.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* Efectos de animación adicionales */
@keyframes glow {
    0% { box-shadow: 0 0 5px var(--neon-green); }
    50% { box-shadow: 0 0 20px var(--neon-purple); }
    100% { box-shadow: 0 0 5px var(--neon-green); }
}

.glow-effect {
    animation: glow 2s infinite;
}

/* Scroll personalizado */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--neon-green), var(--neon-purple));
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--neon-purple), var(--neon-green));
}


/* Mensajes de error de base de datos */
.db-error-message {
    background: linear-gradient(135deg, #ff4444, #cc0000);
    color: white;
    padding: 1.5rem 0;
    margin: 0;
    border-bottom: 2px solid #ff7777;
}

.db-error-message h3 {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.db-error-message ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.db-error-message li {
    margin-bottom: 0.5rem;
}

/* Mejoras para mensajes de error en formularios */
.form-group .error {
    color: #ff4444;
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

.form-group input.error, 
.form-group select.error {
    border-color: #ff4444;
    box-shadow: 0 0 5px rgba(255, 68, 68, 0.5);
}

/* Estados de las filas de la tabla */
.status-pending {
    background: rgba(255, 204, 0, 0.05);
}

.status-overdue {
    background: rgba(255, 51, 51, 0.05);
    animation: pulse-alert 2s infinite;
}

@keyframes pulse-alert {
    0% { background: rgba(255, 51, 51, 0.05); }
    50% { background: rgba(255, 51, 51, 0.15); }
    100% { background: rgba(255, 51, 51, 0.05); }
}


/* Mejoras para la tabla y estados */
tr[data-id] {
    transition: all 0.3s ease;
}

tr[data-id]:hover {
    transform: translateX(5px);
    box-shadow: 0 2px 10px rgba(57, 255, 20, 0.2);
}

/* Estados mejorados */
.status-pending td:first-child {
    border-left: 4px solid #ffcc00;
}

.status-overdue td:first-child {
    border-left: 4px solid #ff3333;
    animation: pulse-alert 2s infinite;
}

.status-paid td:first-child {
    border-left: 4px solid #00cc66;
}

@keyframes pulse-alert {
    0% { border-left-color: #ff3333; }
    50% { border-left-color: #ff6666; }
    100% { border-left-color: #ff3333; }
}

/* Botones de acción mejorados */
.actions {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}

.btn-edit, .btn-delete {
    padding: 0.5rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s;
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-edit {
    background: rgba(57, 255, 20, 0.1);
    color: var(--neon-green);
}

.btn-edit:hover {
    background: rgba(57, 255, 20, 0.3);
    transform: scale(1.1);
}

.btn-delete {
    background: rgba(255, 51, 51, 0.1);
    color: var(--danger);
}

.btn-delete:hover {
    background: rgba(255, 51, 51, 0.3);
    transform: scale(1.1);
}

/* Mensaje cuando no hay datos */
.no-data {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Mejoras responsive para la tabla */
@media (max-width: 768px) {
    .actions {
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .btn-edit, .btn-delete {
        width: 30px;
        height: 30px;
        font-size: 0.8rem;
    }
}