/**
 * Evergreen Solutions 4U - Corporate Style Guide
 * Sistema de diseño unificado para todas las aplicaciones
 * Version: 1.0.0
 * Date: November 15, 2025
 */

/* ========================================
   1. CSS VARIABLES - Colores Corporativos
   ======================================== */
:root {
    /* Colores Corporativos */
    --evergreen-brown: #965634;           /* Marrón corporativo - Botones primarios */
    --evergreen-brown-dark: #7a4529;      /* Marrón oscuro - Hover states */
    --evergreen-green-dark: #5B7F3D;      /* Verde oscuro - Fondos secundarios */
    --evergreen-green-light: #A1C95A;     /* Verde claro - CTAs */
    --evergreen-green-light-hover: #8fb047; /* Verde claro hover */
    --evergreen-gray-light: #C5C5C5;      /* Gris claro - Bordes */
    --evergreen-gray-medium: #999999;     /* Gris medio - Texto secundario */
    --evergreen-gray-dark: #333333;       /* Gris oscuro - Texto principal */
    
    /* Colores Funcionales */
    --evergreen-white: #FFFFFF;
    --evergreen-background: #F5F7FA;
    --evergreen-error: #C53030;
    --evergreen-success: #38A169;
    --evergreen-warning: #D69E2E;
    
    /* Tipografía */
    --font-primary: 'Times New Roman', Times, serif;
    --font-secondary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    
    /* Tamaños de Fuente */
    --font-size-h1: 36px;
    --font-size-h2: 28px;
    --font-size-h3: 20px;
    --font-size-body: 16px;
    --font-size-small: 14px;
    
    /* Espaciado */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Bordes */
    --border-radius: 6px;
    --border-radius-lg: 10px;
    
    /* Sombras */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
    
    /* Transiciones */
    --transition-fast: 0.2s ease-in-out;
    --transition-medium: 0.3s ease-in-out;
}

/* ========================================
   2. RESET & BASE STYLES
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-body);
    color: var(--evergreen-gray-dark);
    background-color: var(--evergreen-background);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   3. TIPOGRAFÍA
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: bold;
    color: var(--evergreen-gray-dark);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: var(--font-size-h1);
    line-height: 1.2;
}

h2 {
    font-size: var(--font-size-h2);
    line-height: 1.3;
}

h3 {
    font-size: var(--font-size-h3);
    line-height: 1.4;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--evergreen-gray-dark);
}

.text-secondary {
    color: var(--evergreen-gray-medium);
    font-size: var(--font-size-small);
}

.text-modern {
    font-family: var(--font-secondary);
}

/* ========================================
   4. BOTONES
   ======================================== */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-family: var(--font-secondary);
    font-size: var(--font-size-body);
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
}

.btn-primary {
    background-color: var(--evergreen-brown);
    color: var(--evergreen-white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background-color: var(--evergreen-brown-dark);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

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

.btn-secondary {
    background-color: var(--evergreen-green-light);
    color: var(--evergreen-gray-dark);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background-color: var(--evergreen-green-light-hover);
    box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
    background-color: var(--evergreen-brown);
    color: var(--evergreen-white);
}

.btn-full {
    width: 100%;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 18px;
}

.btn-sm {
    padding: 8px 16px;
    font-size: var(--font-size-small);
}

/* ========================================
   5. FORMULARIOS
   ======================================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

label {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--evergreen-gray-dark);
    font-family: var(--font-secondary);
    font-weight: 600;
    font-size: var(--font-size-small);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="number"],
textarea,
select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--evergreen-gray-light);
    border-radius: var(--border-radius);
    font-family: var(--font-secondary);
    font-size: var(--font-size-body);
    color: var(--evergreen-gray-dark);
    background-color: var(--evergreen-white);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

input::placeholder,
textarea::placeholder {
    color: var(--evergreen-gray-medium);
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--evergreen-brown);
    box-shadow: 0 0 0 3px rgba(150, 86, 52, 0.1);
}

input.error,
textarea.error,
select.error {
    border-color: var(--evergreen-error);
}

/* ========================================
   6. TARJETAS (CARDS)
   ======================================== */
.card {
    background-color: var(--evergreen-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    transition: box-shadow var(--transition-fast);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

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

.card-title {
    font-size: var(--font-size-h3);
    margin-bottom: var(--spacing-xs);
}

.card-subtitle {
    color: var(--evergreen-gray-medium);
    font-size: var(--font-size-small);
}

/* ========================================
   7. MENSAJES DE ALERTA
   ======================================== */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    font-family: var(--font-secondary);
    font-size: var(--font-size-small);
    line-height: 1.5;
}

.alert-success {
    background-color: rgba(56, 161, 105, 0.1);
    border-left: 4px solid var(--evergreen-success);
    color: #22543D;
}

.alert-error {
    background-color: rgba(197, 48, 48, 0.1);
    border-left: 4px solid var(--evergreen-error);
    color: #742A2A;
}

.alert-warning {
    background-color: rgba(214, 158, 46, 0.1);
    border-left: 4px solid var(--evergreen-warning);
    color: #744210;
}

.alert-info {
    background-color: rgba(91, 127, 61, 0.1);
    border-left: 4px solid var(--evergreen-green-dark);
    color: #2D3748;
}

/* ========================================
   8. HEADER
   ======================================== */
.evergreen-header {
    background-color: var(--evergreen-white);
    border-bottom: 1px solid var(--evergreen-gray-light);
    padding: var(--spacing-md) var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-logo {
    font-family: var(--font-primary);
    font-size: 24px;
    font-weight: bold;
    color: var(--evergreen-brown);
    text-decoration: none;
}

.header-logo img {
    height: 48px;
    width: auto;
}

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

.header-nav a {
    font-family: var(--font-secondary);
    color: var(--evergreen-gray-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.header-nav a:hover {
    color: var(--evergreen-brown);
}

/* Logout button styling to match nav links */
.header-nav form button {
    background: none;
    font-family: var(--font-secondary);
    color: var(--evergreen-gray-dark);
    font-weight: 500;
    font-size: var(--font-size-body);
    padding: 8px 16px;
    border: 1px solid var(--evergreen-brown);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.header-nav form button:hover {
    background-color: var(--evergreen-brown);
    color: var(--evergreen-white);
}

/* ========================================
   9. FOOTER
   ======================================== */
.evergreen-footer {
    background-color: var(--evergreen-brown-dark);
    color: var(--evergreen-white);
    padding: var(--spacing-2xl) var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

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

.footer-column h4,
.footer-section h4 {
    color: var(--evergreen-white);
    font-size: var(--font-size-body);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-secondary);
}

.footer-column p,
.footer-column a,
.footer-section p,
.footer-section a {
    color: var(--evergreen-gray-light);
    font-family: var(--font-secondary);
    font-size: var(--font-size-small);
    text-decoration: none;
    line-height: 1.8;
}

.footer-column a:hover,
.footer-section a:hover {
    color: var(--evergreen-white);
    text-decoration: underline;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: var(--spacing-lg);
    text-align: center;
    font-family: var(--font-secondary);
    font-size: var(--font-size-small);
    color: var(--evergreen-gray-light);
}

/* ========================================
   10. SIDEBAR (para Dashboard)
   ======================================== */
.sidebar {
    background-color: var(--evergreen-green-dark);
    width: 260px;
    min-height: 100vh;
    padding: var(--spacing-xl) 0;
    position: fixed;
    left: 0;
    top: 0;
}

.sidebar-logo {
    padding: 0 var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
    color: var(--evergreen-white);
    font-size: 20px;
    font-weight: bold;
}

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

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

.sidebar-menu a {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-family: var(--font-secondary);
    font-size: var(--font-size-small);
    transition: all var(--transition-fast);
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--evergreen-white);
}

.sidebar-menu .icon {
    font-size: 18px;
}

/* ========================================
   11. BADGES
   ======================================== */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-family: var(--font-secondary);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-admin {
    background-color: rgba(214, 158, 46, 0.3);
    color: #744210;
}

.badge-moderator {
    background-color: rgba(91, 127, 61, 0.3);
    color: #2D3748;
}

.badge-user {
    background-color: rgba(197, 197, 197, 0.3);
    color: var(--evergreen-gray-dark);
}

/* ========================================
   12. UTILIDADES
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

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

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.flex {
    display: flex;
}

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

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

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

/* ========================================
   13. RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
    :root {
        --font-size-h1: 28px;
        --font-size-h2: 24px;
        --font-size-h3: 18px;
    }
    
    .header-container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        width: 100%;
        min-height: auto;
        position: relative;
    }
}

/* ========================================
   14. ANIMACIONES
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn var(--transition-medium) ease-out;
}

/* ========================================
   15. ESTADOS
   ======================================== */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.hidden {
    display: none;
}

/* ========================================
   16. LOGIN PAGE ESPECÍFICO
   ======================================== */
.login-container {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, var(--evergreen-green-dark) 0%, var(--evergreen-brown) 100%);
    padding: var(--spacing-lg);
}

.login-card {
    background: var(--evergreen-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-2xl);
    width: 100%;
    max-width: 450px;
}

.login-logo {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.login-logo img {
    max-width: 200px;
    height: auto;
}

.login-title {
    text-align: center;
    color: var(--evergreen-brown);
    margin-bottom: var(--spacing-sm);
}

.login-subtitle {
    text-align: center;
    color: var(--evergreen-gray-medium);
    font-family: var(--font-secondary);
    font-size: var(--font-size-small);
    margin-bottom: var(--spacing-xl);
    font-style: italic;
}

.login-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--evergreen-gray-light);
}

.login-footer a {
    color: var(--evergreen-brown);
    text-decoration: none;
    font-family: var(--font-secondary);
    font-size: var(--font-size-small);
    font-weight: 600;
}

.login-footer a:hover {
    text-decoration: underline;
}