/* ========================================
   MEDIKEYRO - SISTEMA DE GESTIÓN MÉDICA
   Archivo: styles.css - PARTE 1
   Sección: Estilos Base y Login
   Colores: Verde #26A542, Azul #0059B2
======================================== */

/* ========================================
   VARIABLES CSS Y CONFIGURACIÓN GLOBAL
======================================== */
:root {
    /* Colores Principales */
    --primary-green: #26A542;
    --primary-blue: #0059B2;
    --secondary-green: #1e8a36;
    --secondary-blue: #004494;

    /* Colores de Apoyo */
    --light-green: #E8F5E8;
    --light-blue: #E3F2FD;
    --very-light-green: #F4FBF4;
    --very-light-blue: #F0F8FF;

    /* Grises y Neutros */
    --dark-gray: #2C3E50;
    --medium-gray: #5A6C7D;
    --light-gray: #F8F9FA;
    --border-gray: #E1E5E9;
    --text-gray: #6C757D;
    --white: #FFFFFF;

    /* Estados */
    --success: #28A745;
    --warning: #FFC107;
    --danger: #DC3545;
    --info: #17A2B8;

    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

    /* Bordes */
    --border-radius-sm: 4px;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;

    /* Transiciones */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Espaciado */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
}

/* ========================================
   RESET Y CONFIGURACIÓN BASE
======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--light-gray);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   UTILIDADES GENERALES
======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-grid { display: grid !important; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--spacing-sm) !important; }
.mb-2 { margin-bottom: var(--spacing-md) !important; }
.mb-3 { margin-bottom: var(--spacing-lg) !important; }

.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: var(--spacing-sm) !important; }
.mt-2 { margin-top: var(--spacing-md) !important; }
.mt-3 { margin-top: var(--spacing-lg) !important; }

/* ========================================
   PÁGINA DE LOGIN
======================================== */
.login-page {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-green) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.login-container {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-2xl);
    width: 100%;
    max-width: 480px;
    position: relative;
    z-index: 1;
    animation: slideInUp 0.6s ease-out;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Header del Login */
.login-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.logo-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 24px;
    box-shadow: var(--shadow-md);
}

.logo-text {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.login-subtitle {
    color: var(--medium-gray);
    font-size: 1.1rem;
    font-weight: 400;
    margin: 0;
}

/* Formulario de Login */
.login-form-container {
    margin-bottom: var(--spacing-xl);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--dark-gray);
    font-size: 0.95rem;
}

.input-container {
    position: relative;
    display: flex;
    align-items: center;
}

.input-container input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 3rem;
    border: 2px solid var(--border-gray);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition-normal);
    background: var(--white);
}

.input-container input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 89, 178, 0.1);
}

.input-container.focused {
    transform: scale(1.02);
}

.input-icon {
    position: absolute;
    left: var(--spacing-md);
    color: var(--medium-gray);
    font-size: 1.1rem;
    z-index: 2;
    transition: var(--transition-normal);
}

.input-container:focus-within .input-icon {
    color: var(--primary-blue);
}

.toggle-password {
    position: absolute;
    right: var(--spacing-md);
    background: none;
    border: none;
    color: var(--medium-gray);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: var(--transition-fast);
}

.toggle-password:hover {
    color: var(--primary-blue);
    background: var(--very-light-blue);
}

/* Opciones del formulario */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--medium-gray);
}

.checkbox-container input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-gray);
    border-radius: var(--border-radius-sm);
    margin-right: var(--spacing-sm);
    position: relative;
    transition: var(--transition-normal);
}

.checkbox-container input[type="checkbox"]:checked + .checkmark {
    background: var(--primary-green);
    border-color: var(--primary-green);
}

.checkbox-container input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--white);
    font-size: 12px;
    font-weight: bold;
}

.forgot-password {
    color: var(--primary-blue);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.forgot-password:hover {
    text-decoration: underline;
    color: var(--secondary-blue);
}

/* Botón de Login */
.login-btn {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-md);
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.login-btn:active {
    transform: translateY(0);
}

/* Usuarios de Demostración */
.demo-users {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-gray);
}

.demo-users h3 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--dark-gray);
    font-size: 1.2rem;
    font-weight: 600;
}

.demo-user-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.demo-card {
    background: var(--light-gray);
    border: 2px solid transparent;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-normal);
}

.demo-card:hover {
    border-color: var(--primary-blue);
    background: var(--very-light-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.demo-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 20px;
    color: var(--white);
}

.demo-avatar.doctor {
    background: linear-gradient(135deg, var(--primary-green), var(--secondary-green));
}

.demo-avatar.admin {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
}

.demo-info h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--dark-gray);
    font-size: 1rem;
    font-weight: 600;
}

.demo-info p {
    color: var(--medium-gray);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.demo-role {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--primary-green);
    color: var(--white);
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
}

.demo-role.admin {
    background: var(--primary-blue);
}

/* Footer del Login */
.login-footer {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-gray);
}

.login-footer p {
    color: var(--medium-gray);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--primary-blue);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    text-decoration: underline;
    color: var(--secondary-blue);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-spinner {
    text-align: center;
    color: var(--white);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid var(--white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Mensajes de Error */
.error-message {
    background: var(--danger);
    color: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-top: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: slideInDown 0.3s ease-out;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.demo-filled {
    animation: pulse 0.6s ease-in-out;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

/* ========================================
   DASHBOARD - ESTRUCTURA PRINCIPAL
======================================== */
.dashboard-page {
    background: var(--light-gray);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header del Dashboard */
.dashboard-header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.header-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header-logo .logo-icon {
    width: 40px;
    height: 40px;
    font-size: 18px;
}

.header-logo .logo-text {
    font-size: 1.8rem;
    font-weight: 700;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-item {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-fast);
    font-weight: 500;
    color: var(--medium-gray);
}

.nav-item:hover,
.nav-item.active {
    background: var(--very-light-blue);
    color: var(--primary-blue);
}

.header-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-info {
    text-align: right;
}

.user-name {
    font-weight: 600;
    color: var(--dark-gray);
    font-size: 0.95rem;
}

.user-role {
    font-size: 0.8rem;
    color: var(--medium-gray);
}

.user-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
}

.user-avatar:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-sm) 0;
    min-width: 200px;
    display: none;
    z-index: 1000;
}

.user-dropdown.show {
    display: block;
    animation: fadeInDown 0.2s ease-out;
}

.dropdown-item {
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--dark-gray);
}

.dropdown-item:hover {
    background: var(--light-gray);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-gray);
    margin: var(--spacing-sm) 0;
}

/* Contenido Principal del Dashboard */
.dashboard-main {
    flex: 1;
    display: flex;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
}

/* Sidebar */
.dashboard-sidebar {
    width: 280px;
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-lg);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.sidebar-section {
    margin-bottom: var(--spacing-xl);
}

.sidebar-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--medium-gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-md);
}

.sidebar-menu {
    list-style: none;
}

.sidebar-item {
    margin-bottom: var(--spacing-xs);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--medium-gray);
    transition: var(--transition-fast);
    font-weight: 500;
}

.sidebar-link:hover {
    background: var(--very-light-blue);
    color: var(--primary-blue);
    transform: translateX(4px);
}

.sidebar-link.active {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.sidebar-icon {
    width: 20px;
    text-align: center;
    font-size: 1.1rem;
}

/* Área de Contenido */
.dashboard-content {
    flex: 1;
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-xl);
    min-height: 600px;
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-gray);
}

.content-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark-gray);
    margin: 0;
}

.content-subtitle {
    color: var(--medium-gray);
    font-size: 1.1rem;
    margin-top: var(--spacing-sm);
}

.content-actions {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

/* ========================================
   BOTONES Y CONTROLES
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
    text-decoration: none;
    white-space: nowrap;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-green), var(--secondary-green));
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-blue);
    color: var(--primary-blue);
}

.btn-outline:hover {
    background: var(--primary-blue);
    color: var(--white);
}

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

.btn-danger:hover {
    background: #c82333;
    transform: translateY(-1px);
}

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

.btn-success:hover {
    background: #218838;
    transform: translateY(-1px);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.85rem;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* ========================================
   TARJETAS Y PANELES
======================================== */
.card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition-normal);
}

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

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-gray);
    background: var(--light-gray);
}

.card-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--dark-gray);
    margin: 0;
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-gray);
    background: var(--light-gray);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    font-size: 24px;
    color: var(--white);
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    color: var(--medium-gray);
    font-size: 1rem;
    font-weight: 500;
}

/* ========================================
   FORMULARIOS
======================================== */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--dark-gray);
    font-size: 0.95rem;
}

.form-control {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-gray);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition-normal);
    background: var(--white);
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 89, 178, 0.1);
}

.form-control:disabled {
    background: var(--light-gray);
    cursor: not-allowed;
    opacity: 0.7;
}

.form-select {
    appearance: none;
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><polyline points="6,9 12,15 18,9"></polyline></svg>');
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

/* ========================================
   TABLAS
======================================== */
.table-container {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-xl);
}

.table-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-gray);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--light-gray);
}

.table-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark-gray);
    margin: 0;
}

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

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-gray);
}

.table th {
    background: var(--light-gray);
    font-weight: 600;
    color: var(--dark-gray);
}

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

.table tbody tr:nth-child(even) {
    background: rgba(248, 249, 250, 0.5);
}

/* ========================================
   MODALES
======================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal-overlay.show {
    display: flex;
    animation: fadeIn 0.3s ease-out;
}

.modal {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow: hidden;
    animation: slideInUp 0.3s ease-out;
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-gray);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--light-gray);
}

.modal-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--dark-gray);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--medium-gray);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: var(--border-gray);
    color: var(--dark-gray);
}

.modal-body {
    padding: var(--spacing-lg);
    max-height: 60vh;
    overflow-y: auto;
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-gray);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    background: var(--light-gray);
}

/* ========================================
   RESPONSIVE DESIGN
======================================== */
@media (max-width: 768px) {
    .dashboard-main {
        flex-direction: column;
    }

    .dashboard-sidebar {
        width: 100%;
        position: static;
    }

    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }

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

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

    .content-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .login-container {
        padding: var(--spacing-lg);
        margin: var(--spacing-sm);
    }

    .demo-user-cards {
        grid-template-columns: 1fr;
    }

    .dashboard-content {
        padding: var(--spacing-md);
    }
}