/* ============================================================================
   FRAMEWORK MVC - ESTILOS PRINCIPALES
   ============================================================================ */

/* Reset y Variables */
:root {
    --primary: #667eea;
    --primary-dark: #5568d3;
    --secondary: #764ba2;
    --success: #48bb78;
    --danger: #f56565;
    --warning: #ed8936;
    --info: #4299e1;
    --light: #f7fafc;
    --dark: #2d3748;
    --gray: #718096;
    --border: #e2e8f0;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: #fff;
}

/* ============================================================================
   CONTAINER
   ============================================================================ */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================================================
   HEADER
   ============================================================================ */

.site-header {
    background: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary);
    text-decoration: none;
    transition: color 0.3s;
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--primary);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--dark);
    transition: 0.3s;
    border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ============================================================================
   MAIN CONTENT
   ============================================================================ */

main {
    min-height: calc(100vh - 200px);
    padding: 2rem 0;
}

/* ============================================================================
   HERO SECTION
   ============================================================================ */

.hero {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border-radius: 10px;
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: fadeInUp 0.6s ease-out;
}

.hero p {
    font-size: 1.3rem;
    opacity: 0.9;
    animation: fadeInUp 0.6s ease-out 0.2s backwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================================================
   FEATURES
   ============================================================================ */

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.feature-card {
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0,0,0,0.15);
}

.feature-card h2 {
    margin-bottom: 1rem;
    color: var(--primary);
}

.feature-card p {
    color: var(--gray);
}

/* ============================================================================
   BUTTONS
   ============================================================================ */

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--primary);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

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

.btn-secondary {
    background: #e2e8f0;
    color: #2d3748;
}

.btn-secondary:hover {
    background: #cbd5e0;
}

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

.btn-danger:hover {
    background: #e53e3e;
}

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

.btn-success:hover {
    background: #38a169;
}

.btn-warning {
    background: var(--warning);
}

.btn-warning:hover {
    background: #dd6b20;
}

.btn-info {
    background: var(--info);
}

.btn-info:hover {
    background: #3182ce;
}

/* ============================================================================
   ALERTS
   ============================================================================ */

.alert {
    padding: 1rem 1.5rem;
    border-radius: 5px;
    margin-bottom: 1rem;
    animation: slideInDown 0.3s ease-out;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-success {
    background: #c6f6d5;
    color: #22543d;
    border-left: 4px solid var(--success);
}

.alert-error {
    background: #fed7d7;
    color: #742a2a;
    border-left: 4px solid var(--danger);
}

.alert-warning {
    background: #feebc8;
    color: #7c2d12;
    border-left: 4px solid var(--warning);
}

.alert-info {
    background: #bee3f8;
    color: #2c5282;
    border-left: 4px solid var(--info);
}

/* ============================================================================
   FORMS
   ============================================================================ */

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border);
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-control.error {
    border-color: var(--danger);
}

.form-error {
    color: var(--danger);
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
}

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

select.form-control {
    cursor: pointer;
}

/* ============================================================================
   FOOTER
   ============================================================================ */

.site-footer {
    background: var(--dark);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

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

.footer-section h3 {
    margin-bottom: 1rem;
    color: var(--primary);
}

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

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

.footer-section a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: white;
}

.footer-section p {
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.6);
}

/* ============================================================================
   GETTING STARTED SECTION
   ============================================================================ */

.getting-started {
    background: var(--light);
    padding: 3rem;
    border-radius: 10px;
    margin: 3rem 0;
}

.getting-started h2 {
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.getting-started ol {
    margin-left: 2rem;
    margin-bottom: 2rem;
}

.getting-started li {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.code-example {
    background: white;
    padding: 1.5rem;
    border-radius: 5px;
    border-left: 4px solid var(--primary);
    margin-top: 1.5rem;
}

.code-example h3 {
    margin-bottom: 1rem;
    color: var(--dark);
}

.code-example pre {
    background: #2d3748;
    color: #e2e8f0;
    padding: 1rem;
    border-radius: 5px;
    overflow-x: auto;
}

.code-example code {
    font-family: 'Courier New', Consolas, monospace;
    font-size: 0.9rem;
    line-height: 1.6;
}

code {
    background: #edf2f7;
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-family: 'Courier New', Consolas, monospace;
    font-size: 0.875rem;
    color: #e53e3e;
}

pre code {
    background: transparent;
    padding: 0;
    color: inherit;
}

/* ============================================================================
   LINKS SECTION
   ============================================================================ */

.links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin: 2rem 0;
}

/* ============================================================================
   TABLES
   ============================================================================ */

.table-container {
    overflow-x: auto;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin: 2rem 0;
}

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

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

.table th {
    background: var(--light);
    font-weight: 600;
    color: var(--dark);
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
}

.table tbody tr {
    transition: background-color 0.2s;
}

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

.table tbody tr:last-child td {
    border-bottom: none;
}

/* ============================================================================
   PAGINATION
   ============================================================================ */

.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.pagination a {
    padding: 0.5rem 1rem;
    background: white;
    border: 1px solid var(--border);
    text-decoration: none;
    color: var(--dark);
    border-radius: 4px;
    transition: all 0.3s;
}

.pagination a:hover {
    background: var(--light);
    border-color: var(--primary);
}

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

/* ============================================================================
   CARDS Y LAYOUTS
   ============================================================================ */

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header h1 {
    color: var(--dark);
    font-size: 2rem;
}

.form-page,
.detail-page {
    max-width: 700px;
    margin: 0 auto;
}

.form-header,
.detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.form-card,
.detail-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

.btn-back {
    text-decoration: none;
    color: var(--primary);
    font-weight: 500;
    transition: color 0.3s;
}

.btn-back:hover {
    color: var(--primary-dark);
}

.header-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ============================================================================
   DETAIL ROWS
   ============================================================================ */

.detail-row {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-row strong {
    color: var(--gray);
    font-weight: 600;
}

.message-box {
    background: var(--light);
    padding: 1rem;
    border-radius: 4px;
    border-left: 3px solid var(--primary);
    line-height: 1.6;
}

/* ============================================================================
   DANGER ZONE
   ============================================================================ */

.danger-zone {
    background: #fff5f5;
    border: 2px solid #feb2b2;
    border-radius: 8px;
    padding: 1.5rem;
    margin-top: 2rem;
}

.danger-zone h3 {
    color: var(--danger);
    margin-bottom: 1rem;
}

/* ============================================================================
   ACTIONS
   ============================================================================ */

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

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.875rem;
    text-decoration: none;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-sm:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* ============================================================================
   UTILITIES
   ============================================================================ */

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

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

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

/* ============================================================================
   RESPONSIVE
   ============================================================================ */

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .detail-row {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions .btn {
        width: 100%;
        text-align: center;
    }
    
    .getting-started {
        padding: 1.5rem;
    }
    
    .container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 2rem 1rem;
    }
    
    .hero h1 {
        font-size: 1.5rem;
    }
    
    .table-container {
        font-size: 0.875rem;
    }
    
    .table th,
    .table td {
        padding: 0.75rem 0.5rem;
    }
}

/* ============================================================================
   PRINT STYLES
   ============================================================================ */

@media print {
    .site-header,
    .site-footer,
    .btn,
    .mobile-menu-toggle,
    .actions {
        display: none;
    }
    
    body {
        color: black;
        background: white;
    }
}