/* Reset y estilos generales */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --primary-color: #4361ee;
    --secondary-color: #3f37c9;
    --accent-color: #4cc9f0;
    --success-color: #4ade80;
    --danger-color: #f72585;
    --warning-color: #fbbf24;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --gray-color: #6c757d;
    --light-gray: #e9ecef;
    --border-radius: 10px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

body {
    background-color: #f5f7fb;
    color: var(--dark-color);
    line-height: 1.6;
}

/* Estilos para la página de autenticación */
.auth-container {
    display: flex;
    min-height: 100vh;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, #4361ee 0%, #3f37c9 100%);
}

.auth-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    width: 100%;
    max-width: 450px;
    padding: 40px;
    margin-right: 40px;
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header h1 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.auth-header p {
    color: var(--gray-color);
}

.auth-tabs {
    display: flex;
    margin-bottom: 25px;
    border-bottom: 2px solid var(--light-gray);
}

.tab-btn {
    flex: 1;
    padding: 12px;
    background: none;
    border: none;
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-color);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.tab-btn.active {
    color: var(--primary-color);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-color);
}

.input-with-icon {
    position: relative;
}

.input-with-icon i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-color);
}

.input-with-icon input {
    width: 100%;
    padding: 12px 15px 12px 45px;
    border: 2px solid var(--light-gray);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
}

.input-with-icon input:focus {
    border-color: var(--primary-color);
    outline: none;
}

.form-hint {
    font-size: 14px;
    color: var(--gray-color);
    margin-top: 5px;
}

.auth-btn {
    width: 100%;
    padding: 14px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.auth-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

.auth-footer {
    text-align: center;
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid var(--light-gray);
}

.auth-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

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

.auth-messages {
    margin-top: 20px;
}

.message {
    padding: 12px 15px;
    border-radius: var(--border-radius);
    margin-bottom: 10px;
    font-weight: 500;
}

.message.success {
    background-color: rgba(76, 217, 100, 0.1);
    color: #2ecc71;
    border: 1px solid rgba(46, 204, 113, 0.3);
}

.message.error {
    background-color: rgba(231, 76, 60, 0.1);
    color: #e74c3c;
    border: 1px solid rgba(231, 76, 60, 0.3);
}

.message.hidden {
    display: none;
}

.auth-info {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    width: 100%;
    max-width: 400px;
    padding: 40px;
    color: var(--dark-color);
}

.auth-info h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.auth-info ul {
    list-style: none;
}

.auth-info li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.auth-info li i {
    color: var(--primary-color);
}

/* Estilos para la aplicación principal */
.navbar {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 15px;
}

.nav-brand i {
    font-size: 28px;
    color: var(--primary-color);
}

.nav-brand h1 {
    font-size: 24px;
    color: var(--dark-color);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 20px;
}

#current-user {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 16px;
}

.logout-btn {
    padding: 8px 16px;
    background-color: var(--danger-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logout-btn:hover {
    background-color: #d1145a;
    transform: translateY(-2px);
}

.app-container {
    display: flex;
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    gap: 30px;
}

/* Sidebar (Ranking) */
.sidebar {
    width: 320px;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 25px;
    height: fit-content;
    position: sticky;
    top: 100px;
}

.sidebar-header {
    margin-bottom: 25px;
    text-align: center;
}

.sidebar-header h2 {
    color: var(--primary-color);
    font-size: 22px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.sidebar-header p {
    color: var(--gray-color);
    font-size: 14px;
}

.ranking-list {
    margin-bottom: 30px;
}

.ranking-item {
    display: flex;
    align-items: center;
    padding: 15px;
    background-color: var(--light-gray);
    border-radius: var(--border-radius);
    margin-bottom: 15px;
    transition: var(--transition);
}

.ranking-item:hover {
    transform: translateX(5px);
    background-color: #e2e6ea;
}

.ranking-item.own-image {
    border-left: 4px solid var(--primary-color);
}

.rank-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    font-weight: 700;
    margin-right: 15px;
    font-size: 18px;
}

.rank-number.top-1 {
    background-color: #ffd700;
}

.rank-number.top-2 {
    background-color: #c0c0c0;
}

.rank-number.top-3 {
    background-color: #cd7f32;
}

.ranking-image {
    width: 60px;
    height: 60px;
    border-radius: 8px;
    object-fit: cover;
    margin-right: 15px;
    cursor: pointer;
    transition: var(--transition);
}

.ranking-image:hover {
    transform: scale(1.05);
}

.ranking-info {
    flex: 1;
}

.ranking-user {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 5px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.ranking-votes {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--danger-color);
    font-weight: 600;
}

.ranking-placeholder {
    text-align: center;
    padding: 30px;
    color: var(--gray-color);
    background-color: var(--light-gray);
    border-radius: var(--border-radius);
}

.sidebar-info {
    padding-top: 20px;
    border-top: 1px solid var(--light-gray);
}

.sidebar-info h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 18px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-info ul {
    list-style: none;
}

.sidebar-info li {
    margin-bottom: 10px;
    padding-left: 5px;
    font-size: 14px;
}

/* Contenido principal */
.main-content {
    flex: 1;
}

.section-header {
    margin-bottom: 25px;
}

.section-header h2 {
    color: var(--dark-color);
    font-size: 26px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-header p {
    color: var(--gray-color);
}

/* Formulario de subida */
.upload-section {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 30px;
    margin-bottom: 30px;
}

.upload-form {
    margin-top: 20px;
}

.file-input-container {
    margin-bottom: 10px;
}

.file-label {
    display: flex;
    align-items: center;
    padding: 20px;
    background-color: var(--light-gray);
    border: 2px dashed var(--gray-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.file-label:hover {
    border-color: var(--primary-color);
    background-color: rgba(67, 97, 238, 0.05);
}

.file-label i {
    font-size: 24px;
    color: var(--primary-color);
    margin-right: 15px;
}

.file-label span {
    flex: 1;
}

.file-btn {
    padding: 8px 20px;
    background-color: var(--primary-color);
    color: white;
    border-radius: var(--border-radius);
    font-weight: 600;
}

#image-input {
    display: none;
}

.upload-btn {
    padding: 14px 30px;
    background-color: var(--success-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
}

.upload-btn:hover {
    background-color: #22c55e;
    transform: translateY(-2px);
}

.upload-btn:disabled {
    background-color: var(--gray-color);
    cursor: not-allowed;
    transform: none;
}

.upload-messages {
    margin-top: 20px;
}

/* Galería de imágenes */
.gallery-section {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 30px;
}

.gallery-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--light-gray);
}

.gallery-stats {
    display: flex;
    gap: 20px;
}

.gallery-stats span {
    padding: 8px 16px;
    background-color: var(--light-gray);
    border-radius: 20px;
    font-weight: 600;
    color: var(--dark-color);
    font-size: 14px;
}

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

.sort-controls label {
    font-weight: 600;
    color: var(--dark-color);
}

.sort-controls select {
    padding: 8px 15px;
    border: 2px solid var(--light-gray);
    border-radius: var(--border-radius);
    background-color: white;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.sort-controls select:focus {
    border-color: var(--primary-color);
    outline: none;
}

/* Galería de imágenes */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.gallery-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--gray-color);
}

.gallery-empty i {
    font-size: 60px;
    margin-bottom: 20px;
    color: var(--light-gray);
}

.gallery-empty h3 {
    font-size: 24px;
    margin-bottom: 10px;
    color: var(--gray-color);
}

.image-card {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.image-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.image-card.own-image {
    border: 2px solid var(--primary-color);
}

.image-container {
    height: 200px;
    overflow: hidden;
    position: relative;
}

.image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
    cursor: pointer;
}

.image-container img:hover {
    transform: scale(1.05);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.image-container:hover .image-overlay {
    opacity: 1;
}

.view-btn {
    padding: 8px 16px;
    background-color: white;
    color: var(--dark-color);
    border: none;
    border-radius: 20px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.image-info {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.image-user {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.image-user i {
    color: var(--primary-color);
    margin-right: 8px;
}

.image-user span {
    font-weight: 600;
    color: var(--dark-color);
}

.image-stats {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    gap: 15px;
}

.image-votes {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--danger-color);
    font-weight: 600;
}

.image-date {
    font-size: 14px;
    color: var(--gray-color);
}

.vote-btn {
    margin-top: auto;
    padding: 10px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.vote-btn:hover {
    background-color: var(--secondary-color);
}

.vote-btn:disabled {
    background-color: var(--gray-color);
    cursor: not-allowed;
}

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

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: white;
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 800px;
    max-height: 90vh;
    overflow: hidden;
    position: relative;
}

.close-modal {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 30px;
    color: white;
    cursor: pointer;
    z-index: 10;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
}

.close-modal:hover {
    background-color: rgba(0, 0, 0, 0.7);
}

.modal-image-container {
    height: 500px;
    overflow: hidden;
}

.modal-image-container img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background-color: #f0f0f0;
}

.modal-info {
    padding: 25px;
}

.modal-title {
    margin-bottom: 15px;
    color: var(--dark-color);
}

.modal-details {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.modal-details span {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gray-color);
    font-weight: 500;
}

.modal-details i {
    color: var(--primary-color);
}

/* Responsive */
@media (max-width: 1100px) {
    .app-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        position: static;
    }
    
    .ranking-list {
        display: flex;
        overflow-x: auto;
        gap: 15px;
        padding-bottom: 15px;
    }
    
    .ranking-item {
        min-width: 250px;
        flex-direction: column;
        text-align: center;
    }
    
    .rank-number {
        margin-right: 0;
        margin-bottom: 10px;
    }
    
    .ranking-image {
        margin-right: 0;
        margin-bottom: 10px;
    }
}

@media (max-width: 768px) {
    .auth-container {
        flex-direction: column;
        padding: 20px;
    }
    
    .auth-card {
        margin-right: 0;
        margin-bottom: 30px;
        max-width: 100%;
    }
    
    .auth-info {
        max-width: 100%;
    }
    
    .nav-container {
        padding: 15px 20px;
        flex-direction: column;
        gap: 15px;
    }
    
    .gallery-controls {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .gallery-stats {
        width: 100%;
        justify-content: space-between;
    }
    
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .modal-image-container {
        height: 300px;
    }
}

@media (max-width: 480px) {
    .gallery {
        grid-template-columns: 1fr;
    }
    
    .auth-card, .upload-section, .gallery-section, .sidebar {
        padding: 20px;
    }
    
    .modal-details {
        flex-direction: column;
        gap: 10px;
    }
}