:root {
    --primary: #0ea5e9;
    --primary-dark: #0284c7;
    --secondary: #6366f1;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #1e293b;
    --light: #f8fafc;
    --gray: #64748b;
    --gray-dark: #475569;
    --border: #e2e8f0;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

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

/* Header */
.header {
    text-align: center;
    padding: 30px 0;
    color: white;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.header p { font-size: 1.1rem; opacity: 0.9; }

.header .badge {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-top: 10px;
}

/* API Config */
.api-config {
    background: rgba(255,255,255,0.95);
    border-radius: 15px;
    padding: 20px;
    margin-bottom: 20px;
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
}

.api-config label {
    font-weight: 600;
    color: var(--dark);
    white-space: nowrap;
}

.api-config input {
    flex: 1;
    min-width: 250px;
    padding: 12px 15px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 1rem;
}

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

.api-config button {
    padding: 12px 25px;
    background: var(--success);
    color: white;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.api-config button:hover { background: #059669; }

.status {
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.status.connected { background: #d1fae5; color: #065f46; }
.status.disconnected { background: #fee2e2; color: #991b1b; }
.status.checking { background: #fef3c7; color: #92400e; }

/* Main Card */
.main-card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
    overflow: hidden;
}

.card-header {
    background: linear-gradient(135deg, var(--dark) 0%, #334155 100%);
    color: white;
    padding: 20px 30px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.card-header i { font-size: 1.5rem; color: var(--primary); }
.card-header h2 { font-size: 1.3rem; font-weight: 600; }
.card-body { padding: 30px; }

/* Grid */
.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

@media (max-width: 768px) {
    .grid { grid-template-columns: 1fr; }
    .api-config { flex-direction: column; align-items: stretch; }
    .api-config input { min-width: 100%; }
}

/* Upload */
.upload-section {
    border: 3px dashed var(--border);
    border-radius: 15px;
    padding: 40px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    background: var(--light);
}

.upload-section:hover, .upload-section.dragover {
    border-color: var(--primary);
    background: #f0f9ff;
}

.upload-section i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.upload-section h3 { color: var(--dark); margin-bottom: 10px; }
.upload-section p { color: var(--gray-dark); font-size: 0.9rem; }
#fileInput { display: none; }

/* Preview */
.preview-container { display: none; margin-top: 20px; }
.preview-container.show { display: block; }

.preview-image {
    max-width: 100%;
    max-height: 300px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    display: block;
    margin: 0 auto;
    cursor: zoom-in;
    transition: transform 0.3s ease;
}

.file-info {
    margin-top: 10px;
    padding: 10px;
    background: var(--light);
    border-radius: 8px;
    font-size: 0.85rem;
    color: var(--gray-dark);
    text-align: center;
}

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

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

.form-group label i { margin-right: 8px; color: var(--primary); }

select, textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
    background: white;
}

select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
}

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

/* Button */
.btn {
    width: 100%;
    padding: 15px 30px;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(14, 165, 233, 0.3);
}

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

.btn-new { background: var(--dark); color: white; margin-top: 20px; }
.btn-new:hover { background: #334155; }

.btn-secondary {
    background: var(--gray);
    color: white;
    margin-top: 10px;
}

.btn-secondary:hover { background: var(--gray-dark); }

/* Loading */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.7);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.loading-overlay.show { display: flex; }

.loading-content {
    background: white;
    padding: 40px 60px;
    border-radius: 20px;
    text-align: center;
    max-width: 400px;
}

.spinner {
    width: 60px; height: 60px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

.loading-content h3 { color: var(--dark); margin-bottom: 10px; }
.loading-content p { color: var(--gray-dark); font-size: 0.9rem; }

/* Progress bar */
.progress-container {
    width: 100%;
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    margin-top: 15px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    font-size: 0.8rem;
    color: var(--gray-dark);
    margin-top: 8px;
}

/* Results */
.results-section { display: none; margin-top: 30px; }
.results-section.show { display: block; }

.result-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    margin-bottom: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.result-header {
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.result-header h4 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
}

.result-header.clasificacion {
    background: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 100%);
    color: white;
}

.result-header.informe {
    background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    color: white;
}

.result-body { padding: 20px; }

/* Classification */
.clasificacion-item {
    display: flex;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.clasificacion-item:last-child { border-bottom: none; }

.clasificacion-label {
    flex: 0 0 180px;
    font-weight: 500;
    color: var(--dark);
    text-transform: capitalize;
}

@media (max-width: 768px) {
    .clasificacion-label { flex: 0 0 120px; font-size: 0.85rem; }
}

.clasificacion-bar-container {
    flex: 1;
    height: 24px;
    background: var(--light);
    border-radius: 12px;
    overflow: hidden;
    margin: 0 15px;
}

.clasificacion-bar {
    height: 100%;
    border-radius: 12px;
    transition: width 0.5s ease;
}

.clasificacion-bar.high {
    background: linear-gradient(135deg, var(--success) 0%, #34d399 100%);
}

.clasificacion-bar.medium {
    background: linear-gradient(135deg, var(--warning) 0%, #fbbf24 100%);
}

.clasificacion-bar.low {
    background: linear-gradient(135deg, var(--gray) 0%, #94a3b8 100%);
}

.clasificacion-percent {
    flex: 0 0 60px;
    text-align: right;
    font-weight: 600;
    color: var(--dark);
}

/* Informe */
.informe-content {
    line-height: 1.8;
    color: var(--dark);
    font-size: 0.95rem;
}

.informe-content strong { color: var(--primary-dark); }
.informe-content p { margin-bottom: 15px; }

/* Disclaimer */
.disclaimer {
    background: #fef3c7;
    border: 1px solid #f59e0b;
    border-radius: 10px;
    padding: 15px 20px;
    margin-top: 20px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.disclaimer i { color: var(--warning); font-size: 1.2rem; flex-shrink: 0; }
.disclaimer p { color: #78350f; font-size: 0.85rem; line-height: 1.5; }

/* Footer */
.footer {
    text-align: center;
    padding: 30px;
    color: white;
    opacity: 0.9;
    font-size: 0.9rem;
}

/* Notificaciones Toast */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    padding: 15px 20px;
    border-radius: 10px;
    color: white;
    font-weight: 500;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideIn 0.3s ease;
    max-width: 350px;
}

.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.warning { background: var(--warning); color: #78350f; }
.toast.info { background: var(--primary); }

.toast-close {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    margin-left: auto;
    opacity: 0.8;
    font-size: 1.2rem;
}

.toast-close:hover { opacity: 1; }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Estado imagen seleccionada */
.image-selected .upload-section {
    border-color: var(--success);
    background: #f0fdf4;
}

/* Ocultar dropZone cuando hay imagen */
.upload-section.hidden {
    display: none;
}

/* Botón para cambiar imagen */
.change-image-btn {
    display: block;
    margin: 15px auto 0;
    padding: 10px 20px;
    background: var(--gray);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.3s;
}

.change-image-btn:hover {
    background: var(--dark);
}

.change-image-btn i {
    margin-right: 8px;
}

/* Accesibilidad */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: 8px 16px;
    z-index: 100;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

/* Focus visible para navegación con teclado */
:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

.upload-section:focus-visible {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.3);
}

/* Zoom modal */
.zoom-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
    z-index: 3000;
    justify-content: center;
    align-items: center;
    cursor: zoom-out;
}

.zoom-modal.show {
    display: flex;
}

.zoom-modal img {
    max-width: 95%;
    max-height: 95%;
    object-fit: contain;
    border-radius: 8px;
}

.zoom-controls {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    background: rgba(255,255,255,0.1);
    padding: 10px 20px;
    border-radius: 25px;
}

.zoom-controls button {
    background: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--dark);
    transition: transform 0.2s;
}

.zoom-controls button:hover {
    transform: scale(1.1);
}

.zoom-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--dark);
}

/* Historial */
.history-section {
    margin-top: 20px;
}

.history-toggle {
    background: rgba(255,255,255,0.1);
    border: 2px solid rgba(255,255,255,0.3);
    color: white;
    padding: 10px 20px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 auto;
}

.history-toggle:hover {
    background: rgba(255,255,255,0.2);
}

.history-panel {
    display: none;
    background: rgba(255,255,255,0.95);
    border-radius: 15px;
    padding: 20px;
    margin-top: 15px;
    max-height: 400px;
    overflow-y: auto;
}

.history-panel.show {
    display: block;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: background 0.2s;
}

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

.history-item:last-child {
    border-bottom: none;
}

.history-thumb {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 8px;
}

.history-info {
    flex: 1;
}

.history-info h5 {
    color: var(--dark);
    margin-bottom: 5px;
}

.history-info p {
    color: var(--gray-dark);
    font-size: 0.85rem;
}

.history-delete {
    background: var(--danger);
    color: white;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0.7;
}

.history-delete:hover {
    opacity: 1;
}

.history-empty {
    text-align: center;
    color: var(--gray-dark);
    padding: 30px;
}

.history-clear {
    background: var(--danger);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    margin-top: 15px;
}

/* Confirm Modal */
.confirm-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 2500;
    justify-content: center;
    align-items: center;
}

.confirm-modal.show {
    display: flex;
}

.confirm-content {
    background: white;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    max-width: 400px;
}

.confirm-content h3 {
    color: var(--dark);
    margin-bottom: 15px;
}

.confirm-content p {
    color: var(--gray-dark);
    margin-bottom: 20px;
}

.confirm-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.confirm-buttons button {
    padding: 10px 25px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
}

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

.confirm-no {
    background: var(--gray);
    color: white;
}

/* Export buttons */
.export-buttons {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.btn-export {
    flex: 1;
    min-width: 140px;
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s;
}

.btn-export-pdf {
    background: #dc2626;
    color: white;
}

.btn-export-pdf:hover {
    background: #b91c1c;
}

.btn-export-txt {
    background: var(--secondary);
    color: white;
}

.btn-export-txt:hover {
    background: #4f46e5;
}

.btn-export-img {
    background: var(--primary);
    color: white;
}

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

/* Translate section */
.translate-section {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px;
    background: var(--light);
    border-radius: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.translate-section label {
    font-weight: 500;
    color: var(--dark);
    white-space: nowrap;
}

.translate-section label i {
    color: var(--primary);
    margin-right: 5px;
}

.translate-section select {
    flex: 0 0 auto;
    width: auto;
    min-width: 150px;
    padding: 8px 12px;
    font-size: 0.9rem;
}

.btn-translate {
    padding: 8px 16px;
    background: var(--secondary);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
}

.btn-translate:hover:not(:disabled) {
    background: #4f46e5;
}

.btn-translate:disabled {
    background: var(--gray);
    cursor: not-allowed;
    opacity: 0.7;
}

.btn-translate.loading i {
    animation: spin 1s linear infinite;
}

.translate-status {
    font-size: 0.85rem;
    color: var(--gray-dark);
    margin-left: auto;
}

.translate-status.success {
    color: var(--success);
}

.translate-status.error {
    color: var(--danger);
}

@media (max-width: 768px) {
    .translate-section {
        flex-direction: column;
        align-items: stretch;
    }

    .translate-section select {
        width: 100%;
    }

    .translate-status {
        margin-left: 0;
        text-align: center;
    }
}