/* ===== DESIGN SYSTEM ===== */
:root {
    --primary: #f97316;
    --primary-hover: #ea580c;
    --primary-light: rgba(249, 115, 22, 0.08);
    --primary-glow: rgba(249, 115, 22, 0.25);
    --accent: #6d28d9;
    --success: #10B981;
    --success-light: rgba(16, 185, 129, 0.1);
    --warning: #F59E0B;
    --warning-light: rgba(245, 158, 11, 0.1);
    --error: #EF4444;
    --error-light: rgba(239, 68, 68, 0.1);
    
    --bg-primary: #0F0F14;
    --bg-secondary: #16161D;
    --bg-card: #1C1C26;
    --bg-elevated: #22222E;
    --bg-hover: #2A2A38;
    
    --text-primary: #F0F0F5;
    --text-secondary: #9A9AB0;
    --text-muted: #6B6B80;
    
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --border-focus: rgba(99, 102, 241, 0.5);
    
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 20px var(--primary-glow);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== RESET & BASE ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ===== LAYOUT ===== */
.app-container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
}

/* ===== HEADER ===== */
.app-header {
    padding: 28px 0 20px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 32px;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 14px;
}

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

.logo h1 {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 400;
    margin-top: 2px;
}

/* ===== STEPS ===== */
.step {
    margin-bottom: 32px;
    animation: fadeInUp 0.5s ease;
}

.step.hidden {
    display: none;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.step-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
}

.step-badge {
    width: 36px;
    height: 36px;
    min-width: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    font-size: 0.85rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
}

.step-badge.success {
    background: linear-gradient(135deg, var(--success), #059669);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
    font-size: 1rem;
}

.step-header h2 {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 2px;
}

.step-header p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ===== UPLOAD ZONE ===== */
.upload-zone {
    display: block;
    border: 2px dashed var(--border-hover);
    border-radius: var(--radius-lg);
    padding: 48px 32px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.upload-zone::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, var(--primary-light), transparent 70%);
    opacity: 0;
    transition: opacity var(--transition);
}

.upload-zone:hover, .upload-zone.drag-over {
    border-color: var(--primary);
    background: var(--bg-card);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.upload-zone:hover::before, .upload-zone.drag-over::before {
    opacity: 1;
}

.upload-icon {
    color: var(--text-muted);
    margin-bottom: 16px;
    transition: color var(--transition), transform var(--transition);
    position: relative;
    z-index: 1;
}

.upload-zone:hover .upload-icon {
    color: var(--primary);
    transform: translateY(-4px);
}

.upload-text {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 6px;
    position: relative;
    z-index: 1;
}

.upload-subtext {
    font-size: 0.85rem;
    color: var(--text-muted);
    position: relative;
    z-index: 1;
}

/* ===== FILE LIST ===== */
.file-list {
    margin-top: 16px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-card);
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    font-size: 0.85rem;
    animation: fadeInUp 0.3s ease;
}

.file-item .file-icon {
    color: var(--error);
    flex-shrink: 0;
}

.file-item .file-name {
    font-weight: 500;
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-item .file-remove {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px;
    border-radius: 4px;
    display: flex;
    transition: all var(--transition);
}

.file-item .file-remove:hover {
    color: var(--error);
    background: var(--error-light);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    box-shadow: var(--shadow-sm);
    margin-top: 20px;
}

.btn-primary:hover:not(:disabled) {
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

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

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border);
    margin-top: 20px;
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-hover);
    border-color: var(--border-hover);
}

/* ===== MENU SUMMARY ===== */
.menu-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 12px;
    margin-bottom: 28px;
}

.summary-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    animation: fadeInUp 0.3s ease;
}

.summary-card .card-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.summary-card .card-value {
    font-size: 1rem;
    font-weight: 600;
}

.summary-card.albero {
    border-left: 3px solid var(--primary);
}

.summary-card.menjar {
    border-left: 3px solid var(--accent);
}

.summary-card.veg {
    border-left: 3px solid var(--success);
}

/* ===== QUANTITIES GRID ===== */
.quantities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.quantity-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
    transition: all var(--transition);
}

.quantity-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-sm);
}

.quantity-card .card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.quantity-card .card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.quantity-card.albero .card-icon {
    background: var(--primary-light);
    color: var(--primary);
}

.quantity-card.menjar .card-icon {
    background: rgba(139, 92, 246, 0.1);
    color: var(--accent);
}

.quantity-card .card-title {
    font-size: 0.85rem;
    font-weight: 600;
}

.quantity-card .card-subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.quantity-input-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.quantity-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.quantity-row label {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.quantity-row .tag {
    font-size: 0.65rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.tag.primer {
    background: rgba(245, 158, 11, 0.12);
    color: var(--warning);
}

.tag.segundo {
    background: rgba(99, 102, 241, 0.12);
    color: var(--primary);
}

.stepper {
    display: flex;
    align-items: center;
    gap: 0;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    overflow: hidden;
}

.stepper button {
    width: 32px;
    height: 32px;
    border: none;
    background: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.stepper button:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.stepper input {
    width: 40px;
    height: 32px;
    border: none;
    border-left: 1px solid var(--border);
    border-right: 1px solid var(--border);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    text-align: center;
    outline: none;
}

.stepper input:focus {
    background: var(--bg-card);
}

/* ===== MENU PREVIEW ===== */
.preview-section {
    margin-bottom: 28px;
}

.preview-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.menu-preview {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.preview-menu-group {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.preview-menu-group .group-header {
    padding: 12px 18px;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    font-size: 0.82rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: background var(--transition);
}

.preview-menu-group .group-header:hover {
    background: var(--bg-hover);
}

.preview-menu-group .group-header .chevron {
    transition: transform var(--transition);
}

.preview-menu-group.collapsed .group-header .chevron {
    transform: rotate(-90deg);
}

.preview-menu-group.collapsed .group-body {
    display: none;
}

.preview-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
}

.preview-table th {
    padding: 8px 14px;
    text-align: left;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
}

.preview-table td {
    padding: 8px 14px;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    vertical-align: top;
}

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

.preview-table td.day-name {
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    width: 100px;
}

.preview-table td.date {
    color: var(--text-muted);
    white-space: nowrap;
    width: 90px;
}

.preview-table td.no-servicio {
    color: var(--text-muted);
    font-style: italic;
}

/* ===== DOWNLOAD LIST ===== */
.download-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 8px;
}

.download-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    animation: fadeInUp 0.3s ease;
    transition: all var(--transition);
}

.download-item:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-sm);
}

.download-item .file-info {
    display: flex;
    align-items: center;
    gap: 14px;
}

.download-item .file-icon-wrapper {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.download-item .file-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.download-item .btn-download {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--primary);
    background: transparent;
    color: var(--primary);
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

.download-item .btn-download:hover {
    background: var(--primary);
    color: white;
}

.download-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ===== LOADING OVERLAY ===== */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 15, 20, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

.loading-overlay.hidden {
    display: none;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}

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

.loading-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
    .app-container {
        padding: 0 16px;
    }
    
    .quantities-grid {
        grid-template-columns: 1fr;
    }
    
    .upload-zone {
        padding: 32px 20px;
    }
    
    .download-item {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
    
    .download-actions {
        flex-direction: column;
    }
    
    .download-actions .btn {
        width: 100%;
        justify-content: center;
    }
}