/* ============================================
   EventoReg — Design System Tokens & Styles
   ============================================ */

/* ── Design Tokens ── */
:root {
    --color-primary: #1B3A6B;
    --color-primary-light: #2E75B6;
    --color-primary-dark: #122850;
    --color-secondary: #2E75B6;
    --color-success: #4CAF50;
    --color-success-light: #e8f5e9;
    --color-error: #F44336;
    --color-error-light: #fdecea;
    --color-warning: #FF9800;
    --color-bg: #F8F9FA;
    --color-bg-card: #ffffff;
    --color-text: #212529;
    --color-text-muted: #6c757d;
    --color-border: #dee2e6;

    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;

    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 50%;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-glow: 0 0 20px rgba(46,117,182,0.3);

    --font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;

    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
}

/* ── Global Reset ── */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
}

/* ── Registration Page ── */
.registro-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    padding: var(--spacing-lg) var(--spacing-md) calc(var(--spacing-xl) * 2.5);
    position: relative;
    overflow: hidden;
}

.registro-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: rgba(255,255,255,0.05);
    border-radius: var(--radius-full);
    pointer-events: none;
}

.registro-header::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 200px;
    height: 200px;
    background: rgba(255,255,255,0.03);
    border-radius: var(--radius-full);
    pointer-events: none;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 960px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.header-logos {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-shrink: 0;
}

.header-logo {
    height: 50px;
    width: auto;
    object-fit: contain;
    background: white;
    border-radius: var(--radius-sm);
    padding: var(--spacing-xs);
}

.header-info {
    text-align: center;
    flex: 1;
    min-width: 200px;
}

.header-info h1 {
    color: #fff;
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin: 0;
    line-height: 1.3;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.header-info .evento-meta {
    color: rgba(255,255,255,0.85);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.header-info .evento-meta i {
    opacity: 0.7;
}

/* ── Form Container ── */
.registro-container {
    max-width: 800px;
    margin: calc(-1 * var(--spacing-xl)) auto var(--spacing-2xl);
    padding: 0 var(--spacing-md);
    position: relative;
    z-index: 2;
}

.registro-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: slideUp 0.6s var(--transition-normal);
}

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

.form-section {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
}

.form-section:last-child {
    border-bottom: none;
}

.section-title {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin: 0 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.section-title i {
    font-size: var(--font-size-lg);
    opacity: 0.7;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

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

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.form-group label .required {
    color: var(--color-error);
    margin-left: 2px;
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    color: var(--color-text);
    background: var(--color-bg-card);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

.form-control:focus {
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(46,117,182,0.15);
}

.form-control.is-invalid {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(244,67,54,0.1);
}

.form-control.is-valid {
    border-color: var(--color-success);
}

.invalid-feedback {
    display: none;
    color: var(--color-error);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
    animation: fadeIn 0.2s ease;
}

.is-invalid ~ .invalid-feedback,
.form-control.is-invalid + .invalid-feedback {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ── Checkboxes ── */
.form-check {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    transition: background var(--transition-fast);
    cursor: pointer;
}

.form-check:hover {
    background: #eef2f7;
}

.form-check-input {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    accent-color: var(--color-primary);
    cursor: pointer;
    flex-shrink: 0;
}

.form-check-label {
    font-size: var(--font-size-sm);
    color: var(--color-text);
    line-height: 1.5;
    cursor: pointer;
}

/* ── Submit Button ── */
.btn-submit-container {
    padding: var(--spacing-lg) var(--spacing-xl) var(--spacing-xl);
    text-align: center;
}

.btn-submit {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 14px 48px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #fff;
    border: none;
    border-radius: 50px;
    font-size: var(--font-size-lg);
    font-weight: 700;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.btn-submit::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.btn-submit:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-submit:hover:not(:disabled)::before {
    left: 100%;
}

.btn-submit:active:not(:disabled) {
    transform: translateY(0);
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-submit .spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

.btn-submit.loading .spinner {
    display: inline-block;
}

.btn-submit.loading .btn-text {
    display: none;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ── Success Modal ── */
.modal-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal-backdrop.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl) var(--spacing-xl);
    max-width: 480px;
    width: 100%;
    text-align: center;
    box-shadow: var(--shadow-lg);
    animation: scaleIn 0.4s ease;
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1); }
}

.modal-check {
    width: 80px;
    height: 80px;
    background: var(--color-success-light);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    animation: bounceIn 0.6s ease 0.2s both;
}

@keyframes bounceIn {
    0% { transform: scale(0); }
    60% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.modal-check i {
    font-size: 40px;
    color: var(--color-success);
}

.modal-content h2 {
    color: var(--color-primary);
    margin: 0 0 var(--spacing-md);
    font-size: var(--font-size-2xl);
}

.modal-content p {
    color: var(--color-text-muted);
    line-height: 1.6;
    margin: 0 0 var(--spacing-lg);
}

.btn-modal-close {
    padding: 10px 32px;
    border: 2px solid var(--color-primary);
    background: transparent;
    color: var(--color-primary);
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
}

.btn-modal-close:hover {
    background: var(--color-primary);
    color: #fff;
}

/* ── Error Alert ── */
.alert-error {
    background: var(--color-error-light);
    border-left: 4px solid var(--color-error);
    color: var(--color-error);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* ── Admin Layout ── */
.admin-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 260px;
    height: 100vh;
    background: var(--color-primary);
    color: #fff;
    z-index: 100;
    overflow-y: auto;
    transition: transform var(--transition-normal);
}

.admin-sidebar .sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    text-align: center;
}

.admin-sidebar .sidebar-header img {
    height: 36px;
    margin-bottom: var(--spacing-sm);
}

.admin-sidebar .sidebar-header h3 {
    font-size: var(--font-size-sm);
    margin: 0;
    opacity: 0.9;
}

.sidebar-nav {
    padding: var(--spacing-md) 0;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background: rgba(255,255,255,0.1);
    color: #fff;
    border-left-color: var(--color-primary-light);
}

.sidebar-nav a i {
    width: 20px;
    text-align: center;
}

.admin-main {
    margin-left: 260px;
    padding: var(--spacing-xl);
    min-height: 100vh;
}

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

.admin-topbar h1 {
    font-size: var(--font-size-2xl);
    color: var(--color-primary);
    margin: 0;
}

/* ── Dashboard Cards ── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

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

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

.stat-card .stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-primary);
    margin: 0;
}

.stat-card .stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin: var(--spacing-xs) 0 0;
}

/* ── Data Tables ── */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.data-table th {
    background: var(--color-primary);
    color: #fff;
    padding: var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-align: left;
    white-space: nowrap;
}

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

.data-table tr:hover td {
    background: #f0f4f8;
}

.data-table .badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 50px;
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.badge-success {
    background: var(--color-success-light);
    color: var(--color-success);
}

.badge-warning {
    background: #fff3e0;
    color: var(--color-warning);
}

.badge-error {
    background: var(--color-error-light);
    color: var(--color-error);
}

/* ── Action Buttons ── */
.btn-action {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-family);
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}

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

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

.btn-success:hover {
    background: #388E3C;
}

/* ── Login Page ── */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    padding: var(--spacing-md);
}

.login-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
}

.login-card h2 {
    text-align: center;
    color: var(--color-primary);
    margin: 0 0 var(--spacing-lg);
}

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

.btn-login {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-family);
}

.btn-login:hover {
    box-shadow: var(--shadow-glow);
}

/* ── Mobile Responsive ── */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .header-logos {
        justify-content: center;
    }

    .header-info h1 {
        font-size: var(--font-size-base);
    }

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

    .form-section {
        padding: var(--spacing-md);
    }

    .btn-submit-container {
        padding: var(--spacing-md);
    }

    .btn-submit {
        width: 100%;
        justify-content: center;
        padding: 14px 24px;
    }

    .registro-container {
        margin-top: calc(-1 * var(--spacing-md));
    }

    /* Admin responsive */
    .admin-sidebar {
        transform: translateX(-100%);
    }

    .admin-sidebar.open {
        transform: translateX(0);
    }

    .admin-main {
        margin-left: 0;
        padding: var(--spacing-md);
    }

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

    .data-table {
        display: block;
        overflow-x: auto;
    }
}

/* ── Footer Banner Image ── */
.mobile-footer-image {
    display: block;
    width: 100%;
    margin-top: var(--spacing-lg);
    border-radius: var(--radius-md);
    overflow: hidden;
}

@media (max-width: 480px) {
    .header-logo {
        height: 36px;
    }

    .header-info h1 {
        font-size: var(--font-size-sm);
    }

    .modal-content {
        padding: var(--spacing-lg);
    }

    .modal-check {
        width: 60px;
        height: 60px;
    }

    .modal-check i {
        font-size: 28px;
    }
}

@media (max-width: 320px) {
    .header-logos {
        gap: var(--spacing-sm);
    }

    .header-logo {
        height: 30px;
    }

    .form-section {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .section-title {
        font-size: var(--font-size-xs);
    }

    .form-control {
        padding: 8px 10px;
        font-size: var(--font-size-sm);
    }

    .btn-submit {
        font-size: var(--font-size-base);
        padding: 12px 20px;
    }
}

/* ── Hamburger for mobile ── */
.hamburger-btn {
    display: none;
    position: fixed;
    top: var(--spacing-md);
    left: var(--spacing-md);
    z-index: 200;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
    cursor: pointer;
    font-size: var(--font-size-xl);
}

@media (max-width: 768px) {
    .hamburger-btn {
        display: block;
    }
}

/* ── Select2-like Select ── */
.form-select {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    color: var(--color-text);
    background: var(--color-bg-card);
    transition: border-color var(--transition-fast);
    outline: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%236c757d' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-select:focus {
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(46,117,182,0.15);
}

/* ── Privacy Link ── */
.privacy-link {
    color: var(--color-primary-light);
    text-decoration: underline;
    font-size: var(--font-size-sm);
}

.privacy-link:hover {
    color: var(--color-primary);
}

/* ── Footer ── */
.registro-footer {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
}

/* ── Search Bar ── */
.search-bar {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.search-bar input {
    flex: 1;
    padding: 10px 14px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    outline: none;
}

.search-bar input:focus {
    border-color: var(--color-primary-light);
}

.search-bar button {
    padding: 10px 20px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    transition: background var(--transition-fast);
}

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