/* Nutrition Dashboard v2 - Warm Editorial Wellness Design */

/* ============================================
   CSS Variables & Design Tokens
   ============================================ */
:root {
    /* Colors */
    --color-primary: #5D7052;
    --color-primary-light: #7A8F6E;
    --color-primary-dark: #4A5A42;
    --color-secondary: #8B6F47;
    --color-accent: #D4956A;
    --color-accent-light: #E5B88A;
    
    --color-bg: #FAF7F2;
    --color-surface: #FFFFFF;
    --color-surface-hover: #F5F2EC;
    
    --color-text: #2D2A26;
    --color-text-secondary: #6B6560;
    --color-text-muted: #9A9590;
    
    --color-success: #6B8E5A;
    --color-warning: #C9A227;
    --color-danger: #B85C4A;
    
    --color-border: #E8E4DD;
    --color-border-light: #F0ECE6;
    
    /* Typography */
    --font-heading: 'Fraunces', Georgia, serif;
    --font-body: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Consolas', monospace;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(45, 42, 38, 0.05);
    --shadow-md: 0 4px 12px rgba(45, 42, 38, 0.08);
    --shadow-lg: 0 8px 24px rgba(45, 42, 38, 0.12);
    --shadow-xl: 0 12px 40px rgba(45, 42, 38, 0.16);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    
    /* Layout */
    --header-height: 64px;
    --max-width: 1200px;
    --content-padding: var(--space-md);
}

@media (min-width: 768px) {
    :root {
        --content-padding: var(--space-lg);
    }
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Grain Overlay */
.grain-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
    outline: none;
}

input, select {
    font-family: inherit;
    font-size: inherit;
    outline: none;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ============================================
   Layout
   ============================================ */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--content-padding);
}

.main-content {
    flex: 1;
    padding-bottom: 100px;
}

/* ============================================
   Header
   ============================================ */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-bg);
    padding: var(--space-md) 0;
    margin: 0 calc(var(--content-padding) * -1);
    padding-left: var(--content-padding);
    padding-right: var(--content-padding);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-primary);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-md);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.date-display {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
}

.sync-status {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.sync-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-success);
}

.sync-status.offline .sync-dot {
    background: var(--color-warning);
}

.sync-status.error .sync-dot {
    background: var(--color-danger);
}

/* ============================================
   Quick Stats
   ============================================ */
.quick-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

@media (min-width: 768px) {
    .quick-stats {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-md);
    }
}

.stat-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.stat-card:active {
    transform: scale(0.98);
}

@media (min-width: 768px) {
    .stat-card:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
    }
}

.stat-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: white;
}

.stat-calories .stat-icon { background: var(--color-primary); }
.stat-protein .stat-icon { background: var(--color-accent); }
.stat-carbs .stat-icon { background: var(--color-secondary); }
.stat-fat .stat-icon { background: var(--color-danger); }

.stat-content {
    display: flex;
    align-items: baseline;
    gap: var(--space-xs);
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 500;
    line-height: 1;
}

.stat-unit {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ============================================
   Chart Sections
   ============================================ */
.chart-section {
    margin-bottom: var(--space-xl);
}

.section-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-text);
}

.section-subtitle {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.chart-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-sm);
    height: 240px;
}

@media (min-width: 768px) {
    .chart-card {
        height: 280px;
        padding: var(--space-lg);
    }
}

.macro-chart-card {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    height: auto;
}

@media (min-width: 768px) {
    .macro-chart-card {
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }
}

.macro-chart-container {
    height: 200px;
    position: relative;
}

.macro-legend {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-sm);
}

.legend-protein { background: var(--color-accent); }
.legend-carbs { background: var(--color-secondary); }
.legend-fat { background: var(--color-danger); }

.legend-label {
    flex: 1;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.legend-value {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
}

/* ============================================
   Meal Section
   ============================================ */
.meal-section {
    margin-bottom: var(--space-xl);
}

.meal-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.meal-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition-fast);
}

.meal-card:hover {
    box-shadow: var(--shadow-md);
}

.meal-header {
    display: flex;
    align-items: center;
    padding: var(--space-md);
    gap: var(--space-md);
    cursor: pointer;
    user-select: none;
}

.meal-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    color: var(--color-primary);
    flex-shrink: 0;
}

.meal-info {
    flex: 1;
    min-width: 0;
}

.meal-name {
    font-weight: 500;
    font-size: 1rem;
    color: var(--color-text);
    text-transform: capitalize;
}

.meal-count {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.meal-calories {
    font-family: var(--font-mono);
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-primary);
}

.meal-toggle {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: transform var(--transition-base);
}

.meal-card.expanded .meal-toggle {
    transform: rotate(180deg);
}

.meal-entries {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.meal-card.expanded .meal-entries {
    max-height: 500px;
}

.food-entry {
    display: flex;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    padding-left: calc(var(--space-md) + 40px + var(--space-md));
    border-top: 1px solid var(--color-border-light);
    transition: background var(--transition-fast);
}

.food-entry:hover {
    background: var(--color-surface-hover);
}

.food-entry-info {
    flex: 1;
    min-width: 0;
}

.food-entry-name {
    font-size: 0.9375rem;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.food-entry-qty {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.food-entry-cal {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.food-entry-delete {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-danger);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.food-entry:hover .food-entry-delete {
    opacity: 1;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--space-2xl) var(--space-lg);
}

.empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface);
    border-radius: 50%;
    color: var(--color-text-muted);
}

.empty-text {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.empty-hint {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ============================================
   FAB (Floating Action Button)
   ============================================ */
.fab {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    z-index: 50;
}

@media (min-width: 768px) {
    .fab {
        bottom: 32px;
        right: 32px;
    }
}

.fab:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

.fab:active {
    transform: scale(0.95);
}

/* ============================================
   Modal
   ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(45, 42, 38, 0.5);
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    max-height: 85vh;
    background: var(--color-surface);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    z-index: 201;
    transform: translateY(100%);
    transition: transform var(--transition-slow) cubic-bezier(0.32, 0.72, 0, 1);
    display: flex;
    flex-direction: column;
}

@media (min-width: 768px) {
    .modal {
        left: 50%;
        right: auto;
        bottom: auto;
        top: 50%;
        transform: translate(-50%, -50%) scale(0.9);
        width: 480px;
        max-width: calc(100vw - 48px);
        max-height: 80vh;
        border-radius: var(--radius-xl);
        opacity: 0;
        visibility: hidden;
        transition: transform var(--transition-slow) cubic-bezier(0.32, 0.72, 0, 1), opacity var(--transition-base), visibility var(--transition-base);
    }
    
    .modal.active {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
        visibility: visible;
    }
    
    .modal-overlay.active {
        opacity: 1;
        visibility: visible;
    }
}

.modal.active {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border-light);
    flex-shrink: 0;
}

.modal-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 500;
}

.modal-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-bg);
    color: var(--color-text);
}

.modal-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-lg);
}

/* Search Section */
.search-section {
    margin-bottom: var(--space-lg);
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 12px;
    color: var(--color-text-muted);
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: 12px 40px 12px 44px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    background: var(--color-bg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(93, 112, 82, 0.1);
}

.search-input::placeholder {
    color: var(--color-text-muted);
}

.search-clear {
    position: absolute;
    right: 12px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    border-radius: var(--radius-sm);
}

.search-clear:hover {
    background: var(--color-border);
}

.search-results {
    margin-top: var(--space-sm);
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    background: var(--color-surface);
}

.search-result-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.search-result-item:hover,
.search-result-item.selected {
    background: var(--color-surface-hover);
}

.search-result-name {
    font-size: 0.9375rem;
    color: var(--color-text);
}

.search-result-cal {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

/* Entry Form */
.entry-form {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.selected-food {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    background: var(--color-bg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
}

.selected-food-name {
    font-weight: 500;
    color: var(--color-text);
}

.selected-food-cal {
    font-family: var(--font-mono);
    color: var(--color-primary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-group label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.form-select,
.form-input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    background: var(--color-surface);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-select:focus,
.form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(93, 112, 82, 0.1);
}

.quantity-input-wrapper {
    display: flex;
    align-items: center;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-surface);
}

.quantity-input-wrapper:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(93, 112, 82, 0.1);
}

.quantity-btn {
    width: 40px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    color: var(--color-text-secondary);
    transition: background var(--transition-fast), color var(--transition-fast);
}

.quantity-btn:hover {
    background: var(--color-border);
    color: var(--color-text);
}

.quantity-input {
    width: 100%;
    border: none;
    text-align: center;
    padding: 10px 0;
    -moz-appearance: textfield;
}

.quantity-input::-webkit-inner-spin-button,
.quantity-input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.form-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    background: var(--color-bg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    font-weight: 500;
}

.form-total-value {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    color: var(--color-primary);
}

.btn-save {
    width: 100%;
    padding: 14px 24px;
    background: var(--color-primary);
    color: white;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast), transform var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

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

.btn-save:active {
    transform: scale(0.98);
}

.btn-save:disabled {
    background: var(--color-text-muted);
    cursor: not-allowed;
}

.spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ============================================
   Toast
   ============================================ */
.toast {
    position: fixed;
    bottom: 96px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--color-text);
    color: white;
    padding: 12px 20px;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--space-md);
    z-index: 300;
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
    box-shadow: var(--shadow-lg);
}

.toast.active {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

.toast-action {
    color: var(--color-accent-light);
    font-weight: 500;
    font-size: 0.875rem;
}

.toast-action:hover {
    color: white;
}

/* ============================================
   Utilities & States
   ============================================ */
.skeleton {
    background: linear-gradient(90deg, var(--color-border-light) 25%, var(--color-surface-hover) 50%, var(--color-border-light) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.hidden {
    display: none !important;
}

/* ============================================
   Animations
   ============================================ */
.fade-up-enter {
    animation: fadeUp 0.4s ease forwards;
}

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

.quick-stats .stat-card:nth-child(1) { animation-delay: 0ms; }
.quick-stats .stat-card:nth-child(2) { animation-delay: 50ms; }
.quick-stats .stat-card:nth-child(3) { animation-delay: 100ms; }
.quick-stats .stat-card:nth-child(4) { animation-delay: 150ms; }

.quick-stats .stat-card {
    opacity: 0;
    animation: fadeUp 0.4s ease forwards;
}

.chart-section,
.meal-section {
    opacity: 0;
    animation: fadeUp 0.4s ease forwards;
    animation-delay: 200ms;
}