/* 
   NutriScan Stylesheet
   Design System: Modern Health & Food Theme
   Colors: Emerald Green (Health), Energetic Orange (Accent), Soft Dark Slate (Text)
*/

:root {
    --primary: #10b981;
    --primary-hover: #059669;
    --primary-light: #ecfdf5;
    --primary-glow: rgba(16, 185, 129, 0.15);
    
    --accent: #f97316;
    --accent-hover: #ea580c;
    --accent-light: #fff7ed;
    
    --dark: #0f172a;
    --text-main: #334155;
    --text-muted: #64748b;
    --light-bg: #f8fafc;
    --border: #e2e8f0;
    
    --white: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.5);
    
    --danger: #ef4444;
    --danger-light: #fef2f2;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08), 0 8px 16px -6px rgba(15, 23, 42, 0.04);
    --shadow-lg: 0 20px 40px -10px rgba(15, 23, 42, 0.12), 0 10px 20px -8px rgba(15, 23, 42, 0.06);
    --shadow-inset: inset 0 2px 4px rgba(15, 23, 42, 0.04);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--text-main);
    background-color: var(--light-bg);
    line-height: 1.5;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    color: var(--dark);
    font-weight: 700;
}

/* Utility Containers */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.hidden {
    display: none !important;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--light-bg);
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Header styling */
.app-header {
    background-color: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.9);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--primary);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo-text span {
    color: var(--primary);
}

.tagline {
    font-size: 0.95rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Alert Notification */
.demo-badge-container {
    margin-top: 20px;
}

.demo-alert {
    background-color: var(--accent-light);
    border-left: 4px solid var(--accent);
    padding: 16px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    position: relative;
    box-shadow: var(--shadow-sm);
    animation: slideDown 0.4s ease-out;
}

.demo-alert-icon {
    font-size: 1.25rem;
    line-height: 1;
}

.demo-alert-content {
    font-size: 0.9rem;
    color: #c2410c;
    padding-right: 24px;
}

.demo-alert-content code {
    background-color: rgba(249, 115, 22, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.85rem;
}

.close-alert-btn {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: #c2410c;
    opacity: 0.6;
    transition: var(--transition);
}

.close-alert-btn:hover {
    opacity: 1;
    transform: scale(1.1);
}

/* Main Grid Layout */
.main-container {
    margin-top: 30px;
    margin-bottom: 60px;
}

.app-grid {
    display: grid;
    grid-template-columns: 1.1fr 1.3fr;
    gap: 30px;
    align-items: start;
}

/* Panel Common Styles */
.panel-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.panel-header {
    margin-bottom: 24px;
}

.panel-header h2 {
    font-size: 1.4rem;
    margin-bottom: 6px;
}

.panel-header p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Tabs Switcher */
.tab-container {
    display: flex;
    background-color: var(--light-bg);
    padding: 6px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    box-shadow: var(--shadow-inset);
}

.tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
    background: none;
    padding: 12px 16px;
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

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

.tab-btn.active {
    background-color: var(--white);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

/* Viewport Preview Area */
.preview-viewport-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    background-color: var(--dark);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 24px;
    border: 2px dashed #cbd5e1;
    box-shadow: var(--shadow-inset);
    display: flex;
    justify-content: center;
    align-items: center;
}

.viewport-content {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

#webcam-container {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

#webcam-container canvas {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover;
}

.viewport-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: #94a3b8;
    text-align: center;
}

.placeholder-icon {
    font-size: 3rem;
    animation: float 3s ease-in-out infinite;
}

.viewport-placeholder p {
    font-size: 0.95rem;
    font-weight: 500;
}

/* Scanner Laser Line */
.scanner-laser {
    position: absolute;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, transparent, var(--primary), var(--primary), transparent);
    z-index: 10;
    box-shadow: 0 0 12px var(--primary);
    animation: scan 2s linear infinite;
    pointer-events: none;
}

/* File Upload Field */
.file-uploader-box {
    width: 100%;
    height: 100%;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    background: var(--dark);
    transition: var(--transition);
}

.file-uploader-box.drag-over {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--primary);
}

.upload-placeholder-ui {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    color: #94a3b8;
    gap: 8px;
}

.upload-placeholder-ui p {
    font-weight: 600;
    font-size: 0.95rem;
}

.upload-placeholder-ui .sub-text {
    font-size: 0.75rem;
    margin-bottom: 8px;
}

.uploaded-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.hidden-file-input {
    display: none;
}

/* Button UI Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-family: 'Outfit', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.3);
}

.btn-primary:disabled {
    background-color: #cbd5e1;
    color: #94a3b8;
    cursor: not-allowed;
    box-shadow: none;
}

.btn-secondary {
    background-color: var(--light-bg);
    border: 1px solid var(--border);
    color: var(--dark);
}

.btn-secondary:hover {
    background-color: #f1f5f9;
    border-color: #cbd5e1;
    transform: translateY(-1px);
}

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

.btn-danger:hover {
    background-color: #dc2626;
    transform: translateY(-2px);
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.action-controls {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Mock Simulator Selection Styles */
.mock-selector-container {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mock-selector-container label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
}

.mock-select-input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    background-color: var(--white);
    color: var(--dark);
    cursor: pointer;
    transition: var(--transition);
    outline: none;
}

.mock-select-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

/* Right Side: Results Panel UI States */
.results-panel {
    min-height: 520px;
    position: relative;
    display: flex;
    flex-direction: column;
}

.results-placeholder-ui, 
.results-error-ui {
    margin: auto;
    text-align: center;
    max-width: 380px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    animation: fadeIn 0.5s ease-out;
}

.empty-state-icon, .error-icon {
    font-size: 4rem;
}

.results-placeholder-ui h3,
.results-error-ui h3 {
    font-size: 1.3rem;
}

.results-placeholder-ui p,
.results-error-ui p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Loading Spinner Overlay */
.results-loading-ui {
    margin: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
}

.spinner-ring {
    display: inline-block;
    position: relative;
    width: 80px;
    height: 80px;
}
.spinner-ring div {
    box-sizing: border-box;
    display: block;
    position: absolute;
    width: 64px;
    height: 64px;
    margin: 8px;
    border: 6px solid var(--primary);
    border-radius: 50%;
    animation: spinner-ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    border-color: var(--primary) transparent transparent transparent;
}
.spinner-ring div:nth-child(1) {
    animation-delay: -0.45s;
}
.spinner-ring div:nth-child(2) {
    animation-delay: -0.3s;
}
.spinner-ring div:nth-child(3) {
    animation-delay: -0.15s;
}

.results-loading-ui h3 {
    font-size: 1.2rem;
    color: var(--dark);
}

.results-loading-ui p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Results Output UI */
.results-content-ui {
    animation: fadeIn 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Classification Badge Header */
.detected-badge-header {
    background-color: var(--primary-light);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.badge-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary-hover);
    display: inline-block;
}

.badge-details h3 {
    font-size: 1.6rem;
    line-height: 1.2;
    margin-bottom: 8px;
}

.confidence-wrapper {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.confidence-text {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.progress-bar-bg {
    width: 100%;
    height: 8px;
    background-color: #cbd5e1;
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background-color: var(--primary);
    border-radius: var(--radius-full);
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Nutrition Cards */
.nutrition-section h4, 
.recipes-section h4 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    border-left: 4px solid var(--primary);
    padding-left: 10px;
}

.nutrition-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.nutrition-card {
    background-color: var(--light-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: var(--transition);
}

.nutrition-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
}

.nutri-icon {
    font-size: 1.5rem;
    margin-bottom: 6px;
}

.nutri-val {
    font-family: 'Outfit', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 2px;
}

.nutri-lbl {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Specialized Card Border Triggers */
.calories-card { border-top: 3px solid var(--accent); }
.protein-card { border-top: 3px solid #3b82f6; }
.carbs-card { border-top: 3px solid #eab308; }
.fat-card { border-top: 3px solid #10b981; }

/* Vitamins Card Section */
.vitamins-card {
    background-color: var(--light-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 24px;
}

.vitamins-card h5 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.vitamins-tag-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.vitamin-tag {
    background-color: var(--white);
    color: var(--text-main);
    border: 1px solid var(--border);
    padding: 6px 14px;
    font-size: 0.85rem;
    border-radius: var(--radius-full);
    font-weight: 500;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.vitamin-tag:hover {
    border-color: var(--primary);
    color: var(--primary-hover);
    transform: scale(1.05);
}

/* Recipe cards UI */
.section-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: -12px;
    margin-bottom: 16px;
}

.recipes-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.recipe-card {
    background-color: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.recipe-card:hover {
    border-color: var(--primary);
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.recipe-card-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
}

.recipe-card-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--dark);
}

.recipe-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.recipe-card-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.recipe-card-action-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background-color: var(--light-bg);
    color: var(--primary);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
}

.recipe-card:hover .recipe-card-action-icon {
    background-color: var(--primary);
    color: var(--white);
}

/* Modal Overlay & Card Details */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px;
    transition: var(--transition);
}

.modal-card {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    position: relative;
    display: flex;
    flex-direction: column;
    animation: modalScaleUp 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-close-btn {
    position: absolute;
    top: 20px;
    right: 24px;
    background: #f1f5f9;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 0;
    transition: var(--transition);
}

.modal-close-btn:hover {
    background-color: var(--danger-light);
    color: var(--danger);
    transform: rotate(90deg);
}

.modal-header {
    padding: 30px 30px 20px;
    border-bottom: 1px solid var(--border);
}

.recipe-badge-time {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: var(--accent-light);
    color: #c2410c;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    margin-bottom: 12px;
}

#modal-recipe-title {
    font-size: 1.5rem;
    line-height: 1.3;
}

.modal-body {
    padding: 30px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.modal-section h4 {
    font-size: 1rem;
    margin-bottom: 12px;
    color: var(--dark);
}

.ingredients-check-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 10px;
}

.ingredients-check-list li {
    font-size: 0.9rem;
    position: relative;
    padding-left: 26px;
    color: var(--text-main);
}

.ingredients-check-list li::before {
    content: "✓";
    position: absolute;
    left: 4px;
    top: 2px;
    color: var(--primary);
    font-weight: 800;
    font-size: 0.9rem;
}

.recipe-step-list {
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.recipe-step-list li {
    font-size: 0.9rem;
    color: var(--text-main);
    padding-left: 6px;
}

.recipe-step-list li::marker {
    color: var(--primary);
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
}

.modal-footer {
    padding: 20px 30px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    background-color: var(--light-bg);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* Footer Styling */
.app-footer {
    background-color: var(--white);
    border-top: 1px solid var(--border);
    padding: 30px 0;
    text-align: center;
    margin-top: auto;
}

.footer-content p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Animations */
@keyframes scan {
    0% { top: 0%; }
    50% { top: 100%; }
    100% { top: 0%; }
}

@keyframes spinner-ring {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

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

@keyframes modalScaleUp {
    from { opacity: 0; transform: scale(0.92); }
    to { opacity: 1; transform: scale(1); }
}

/* Media Queries (Responsive Styling) */
@media (max-width: 992px) {
    .app-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 600px) {
    .container {
        padding: 0 16px;
    }
    
    .panel-card {
        padding: 20px;
    }
    
    .nutrition-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .app-header {
        padding: 16px 0;
    }
    
    .header-container {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .modal-card {
        max-height: 90vh;
    }
    
    .modal-body {
        padding: 20px;
    }
    
    .ingredients-check-list {
        grid-template-columns: 1fr;
    }
}