/* ============================================
   NUTRIVISION AI - DESIGN SYSTEM
   Modern Fitness & Nutrition App with AI
   ============================================ */

/* === CSS VARIABLES === */
:root {
    /* Primary Colors - Vibrant Green Energy */
    --primary-50: #ecfdf5;
    --primary-100: #d1fae5;
    --primary-200: #a7f3d0;
    --primary-300: #6ee7b7;
    --primary-400: #34d399;
    --primary-500: #10b981;
    --primary-600: #059669;
    --primary-700: #047857;
    --primary-800: #065f46;
    --primary-900: #064e3b;

    /* Secondary Colors - Tech Blue */
    --secondary-500: #3b82f6;
    --secondary-600: #2563eb;

    /* Accent Colors */
    --accent-protein: #f59e0b;
    --accent-carbs: #8b5cf6;
    --accent-fats: #ec4899;

    /* Neutral Colors - Light Mode */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* Semantic Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;

    /* Theme Variables - Light Mode */
    --bg-primary: #ffffff;
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-100);
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-tertiary: var(--gray-500);
    --border-color: var(--gray-200);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}


/* === DARK MODE === */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --border-color: #334155;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
}

/* === OCEAN THEME === */
[data-theme="ocean"] {
    --primary-500: #06b6d4;
    --primary-600: #0891b2;
    --bg-primary: #0c4a6e;
    --bg-secondary: #075985;
    --bg-tertiary: #0e7490;
    --text-primary: #f0f9ff;
    --text-secondary: #bae6fd;
    --text-tertiary: #7dd3fc;
    --border-color: #0e7490;
}

/* === SUNSET THEME === */
[data-theme="sunset"] {
    --primary-500: #f97316;
    --primary-600: #ea580c;
    --bg-primary: #451a03;
    --bg-secondary: #78350f;
    --bg-tertiary: #92400e;
    --text-primary: #fff7ed;
    --text-secondary: #fed7aa;
    --text-tertiary: #fdba74;
    --border-color: #92400e;
}

/* === FOREST THEME === */
[data-theme="forest"] {
    --primary-500: #22c55e;
    --primary-600: #16a34a;
    --bg-primary: #052e16;
    --bg-secondary: #14532d;
    --bg-tertiary: #166534;
    --text-primary: #f0fdf4;
    --text-secondary: #bbf7d0;
    --text-tertiary: #86efac;
    --border-color: #166534;
}


/* === BASE STYLES === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-tap-highlight-color: rgba(16, 185, 129, 0.1);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-base), color var(--transition-base);
    -webkit-overflow-scrolling: touch;
    touch-action: manipulation;
}

/* === SCREEN MANAGEMENT === */
#app {
    position: relative;
    min-height: 100vh;
}

.screen {
    display: none;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-base), transform var(--transition-base);
}

.screen.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
    animation: fadeInUp 0.4s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === SPLASH SCREEN === */
#splash-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-800) 100%);
    color: white;
    text-align: center;
    padding: var(--spacing-xl);
}

.splash-content {
    max-width: 500px;
    animation: scaleIn 0.6s ease-out;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

.logo-container {
    margin-bottom: var(--spacing-2xl);
}

.logo-container i {
    font-size: 5rem;
    margin-bottom: var(--spacing-md);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.logo-container h1 {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    letter-spacing: -0.02em;
}

.tagline {
    font-size: var(--font-size-lg);
    opacity: 0.95;
    margin-bottom: var(--spacing-2xl);
}

.feature-highlights {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.feature-item i {
    font-size: var(--font-size-2xl);
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-md);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
}

.feature-item span {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-family);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(0);
}

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

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

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

.btn-small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.btn-block {
    width: 100%;
}

.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--text-primary);
}

.icon-btn:hover {
    background: var(--bg-secondary);
    transform: scale(1.05);
}

/* === ONBOARDING === */
.onboarding-container {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-2xl);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

.onboarding-step {
    display: none;
    flex: 1;
}

.onboarding-step.active {
    display: block;
    animation: fadeInUp 0.4s ease-out;
}

.step-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.step-header i {
    font-size: var(--font-size-4xl);
    color: var(--primary-500);
    margin-bottom: var(--spacing-md);
}

.step-header h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

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

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-family);
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.metric-preview {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    text-align: center;
}

.goal-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.goal-card {
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.goal-card:hover {
    border-color: var(--primary-500);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.goal-card.selected {
    border-color: var(--primary-500);
    background: var(--primary-50);
}

[data-theme="dark"] .goal-card.selected {
    background: rgba(16, 185, 129, 0.1);
}

.goal-card i {
    font-size: var(--font-size-3xl);
    color: var(--primary-500);
    margin-bottom: var(--spacing-md);
}

.goal-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.goal-card p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.checkbox-label:hover {
    border-color: var(--primary-500);
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.summary-card {
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: white;
    border-radius: var(--radius-xl);
    text-align: center;
}

.summary-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.onboarding-nav {
    display: flex;
    gap: var(--spacing-md);
    margin-top: auto;
    padding-top: var(--spacing-xl);
}

.onboarding-nav .btn {
    flex: 1;
}

/* === HEADER === */
.app-header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg) var(--spacing-xl);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.user-greeting h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.user-greeting p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.screen-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.screen-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.back-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    cursor: pointer;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.back-btn:hover {
    background: var(--bg-tertiary);
}

/* === DASHBOARD === */
.dashboard-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
    padding-bottom: 100px;
}

.card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

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

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

.card-header h3 {
    font-size: var(--font-size-base);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-header h3 i {
    color: var(--primary-500);
}

.date {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* === CALORIES RING === */
.calories-ring {
    position: relative;
    width: 160px;
    height: 160px;
    margin: var(--spacing-md) auto;
}

.ring-chart {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.ring-background {
    fill: none;
    stroke: var(--bg-tertiary);
    stroke-width: 12;
}

.ring-progress {
    fill: none;
    stroke: url(#caloriesGradient);
    stroke-width: 12;
    stroke-linecap: round;
    stroke-dasharray: 502.65;
    stroke-dashoffset: 502.65;
    transition: stroke-dashoffset 1s ease-out;
}

.ring-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.calories-consumed {
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-xs);
}

.calories-consumed .value {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--primary-500);
    line-height: 1;
}

.calories-consumed .label {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.calories-goal {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* === MACROS === */
.macros-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.macro-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.macro-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.macro-icon.protein {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-protein);
}

.macro-icon.carbs {
    background: rgba(139, 92, 246, 0.1);
    color: var(--accent-carbs);
}

.macro-icon.fats {
    background: rgba(236, 72, 153, 0.1);
    color: var(--accent-fats);
}

.macro-info {
    flex: 1;
}

.macro-label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.macro-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.macro-fill {
    height: 100%;
    border-radius: var(--radius-full);
    transition: width 0.6s ease-out;
}

.macro-fill.protein {
    background: linear-gradient(90deg, var(--accent-protein), #fbbf24);
}

.macro-fill.carbs {
    background: linear-gradient(90deg, var(--accent-carbs), #a78bfa);
}

.macro-fill.fats {
    background: linear-gradient(90deg, var(--accent-fats), #f472b6);
}

.macro-value {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* === QUICK ACTIONS === */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-family);
    color: var(--text-primary);
}

.action-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.action-btn.primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: white;
    border: none;
}

.action-btn i {
    font-size: var(--font-size-2xl);
}

.action-btn span {
    font-size: var(--font-size-sm);
    font-weight: 600;
}

/* === BOTTOM NAVIGATION === */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-sm) 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-family);
    flex: 1;
    max-width: 100px;
}

.nav-item i {
    font-size: var(--font-size-xl);
}

.nav-item span {
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.nav-item.active {
    color: var(--primary-500);
}

.nav-item:hover {
    color: var(--primary-500);
}

/* === ADD FOOD === */
.add-food-content {
    padding: var(--spacing-xl);
    padding-bottom: 100px;
    max-width: 800px;
    margin: 0 auto;
}

.add-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.method-card {
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.method-card:hover {
    border-color: var(--primary-500);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.method-card.active {
    border-color: var(--primary-500);
    background: var(--primary-50);
}

[data-theme="dark"] .method-card.active {
    background: rgba(16, 185, 129, 0.1);
}

.method-card i {
    font-size: var(--font-size-3xl);
    color: var(--primary-500);
    margin-bottom: var(--spacing-md);
}

.method-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.method-card p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.add-method-content {
    animation: fadeInUp 0.4s ease-out;
}

.photo-upload-area {
    margin-bottom: var(--spacing-xl);
}

.upload-placeholder {
    padding: var(--spacing-2xl);
    background: var(--bg-tertiary);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.upload-placeholder:hover {
    border-color: var(--primary-500);
    background: var(--bg-secondary);
}

.upload-placeholder i {
    font-size: var(--font-size-4xl);
    color: var(--primary-500);
    margin-bottom: var(--spacing-md);
}

.upload-placeholder p {
    color: var(--text-secondary);
}

#photoPreview {
    text-align: center;
}

#photoPreview img {
    max-width: 100%;
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-md);
}

.analysis-result {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: var(--bg-tertiary);
    border-radius: var(--radius-xl);
}

.search-bar {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.search-bar i {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.search-bar input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 3rem;
    font-size: var(--font-size-base);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-family);
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary-500);
}

.search-results {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.food-item {
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
}

.food-item:hover {
    border-color: var(--primary-500);
    transform: translateX(4px);
}

.food-item h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.food-item p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* === PROFILE === */
.profile-content {
    padding: var(--spacing-xl);
    padding-bottom: 100px;
    max-width: 800px;
    margin: 0 auto;
}

.profile-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.profile-avatar {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

.profile-header h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.profile-header p {
    color: var(--text-secondary);
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-md);
}

.metric-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
}

.metric-item .value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-500);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.metric-item .label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.badges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: var(--spacing-md);
}

.badge-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.badge-item:hover {
    transform: translateY(-4px);
}

.badge-item.unlocked {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(5, 150, 105, 0.1));
}

.badge-item i {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
    opacity: 0.3;
}

.badge-item.unlocked i {
    opacity: 1;
    color: var(--primary-500);
}

.badge-item p {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.settings-list {
    display: flex;
    flex-direction: column;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

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

.setting-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.setting-info i {
    font-size: var(--font-size-lg);
    color: var(--primary-500);
}

.setting-item-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--spacing-lg);
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    font-family: var(--font-family);
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.setting-item-btn:hover {
    background: var(--bg-tertiary);
}

.setting-item-btn.danger {
    color: var(--error);
}

.setting-item-btn i:first-child {
    margin-right: var(--spacing-md);
    font-size: var(--font-size-lg);
}

.setting-item-btn span {
    flex: 1;
    text-align: left;
}

/* === TOGGLE SWITCH === */
.toggle {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--bg-tertiary);
    transition: var(--transition-base);
    border-radius: var(--radius-full);
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: var(--transition-base);
    border-radius: var(--radius-full);
}

.toggle input:checked+.toggle-slider {
    background-color: var(--primary-500);
}

.toggle input:checked+.toggle-slider:before {
    transform: translateX(22px);
}

/* === TOAST NOTIFICATIONS === */
#toast-container {
    position: fixed;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    min-width: 300px;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border-left: 4px solid var(--primary-500);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: slideInRight 0.3s ease-out;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success {
    border-left-color: var(--success);
}

.toast.error {
    border-left-color: var(--error);
}

.toast.warning {
    border-left-color: var(--warning);
}

.toast i {
    font-size: var(--font-size-xl);
}

.toast.success i {
    color: var(--success);
}

.toast.error i {
    color: var(--error);
}

.toast.warning i {
    color: var(--warning);
}

/* === RESPONSIVE - MOBILE OPTIMIZATION === */
@media (max-width: 768px) {

    /* Font size adjustments for mobile */
    html {
        font-size: 14px;
    }

    /* Reduce header sizes */
    .logo-container h1 {
        font-size: var(--font-size-3xl);
    }

    .user-greeting h2 {
        font-size: var(--font-size-xl);
    }

    .screen-header h2 {
        font-size: var(--font-size-lg);
    }

    .step-header h2 {
        font-size: var(--font-size-2xl);
    }

    .step-header i {
        font-size: var(--font-size-3xl);
    }

    /* Compact padding */
    .dashboard-content,
    .add-food-content,
    .history-content,
    .tips-content,
    .profile-content {
        padding: var(--spacing-sm);
        padding-bottom: 100px;
    }

    .card {
        padding: var(--spacing-sm) var(--spacing-md);
        margin-bottom: var(--spacing-sm);
    }

    .app-header {
        padding: var(--spacing-md);
    }

    .screen-header {
        padding: var(--spacing-md);
    }

    /* Smaller calories ring for mobile */
    .calories-ring {
        width: 140px;
        height: 140px;
        margin: var(--spacing-sm) auto;
    }

    .calories-consumed .value {
        font-size: var(--font-size-2xl);
    }

    /* Single column layouts */
    .quick-actions {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .goal-options {
        grid-template-columns: 1fr;
    }

    .add-methods {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .method-card {
        padding: var(--spacing-md);
    }

    /* Compact macros */
    .macros-grid {
        gap: var(--spacing-sm);
    }

    .macro-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-lg);
    }

    /* Buttons - larger touch targets */
    .btn {
        padding: var(--spacing-md) var(--spacing-lg);
        min-height: 44px;
        /* Apple's recommended touch target */
    }

    .btn-small {
        padding: var(--spacing-sm) var(--spacing-md);
        min-height: 36px;
    }

    .icon-btn {
        width: 44px;
        height: 44px;
    }

    /* Bottom navigation - larger touch targets */
    .bottom-nav {
        padding: var(--spacing-sm) 0;
    }

    .nav-item {
        min-height: 56px;
        padding: var(--spacing-sm);
    }

    /* Toast notifications */
    #toast-container {
        left: var(--spacing-sm);
        right: var(--spacing-sm);
        bottom: 80px;
        /* Above bottom nav */
    }

    .toast {
        min-width: auto;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    /* Onboarding */
    .onboarding-container {
        padding: var(--spacing-md);
    }

    .feature-highlights {
        gap: var(--spacing-md);
    }

    /* Form inputs - easier to tap */
    .form-group input,
    .form-group select {
        padding: var(--spacing-md);
        font-size: var(--font-size-base);
        min-height: 44px;
    }

    /* Profile */
    .profile-header {
        padding: var(--spacing-md);
    }

    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    .badges-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-sm);
    }

    /* Analysis result - more compact on mobile */
    .analysis-result {
        padding: var(--spacing-md);
    }

    .suggestion-card {
        padding: var(--spacing-md);
    }

    /* Search */
    .search-bar {
        padding: var(--spacing-sm);
    }

    .search-bar input {
        font-size: var(--font-size-base);
    }
}

/* Extra small devices (phones in portrait) */
@media (max-width: 480px) {
    html {
        font-size: 13px;
    }

    .logo-container h1 {
        font-size: var(--font-size-2xl);
    }

    .calories-ring {
        width: 120px;
        height: 120px;
    }

    .calories-consumed .value {
        font-size: var(--font-size-xl);
    }

    .card {
        padding: var(--spacing-sm);
    }

    .btn-large {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--font-size-base);
    }

    /* Stack badges vertically on very small screens */
    .badges-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* === UTILITIES === */
.text-center {
    text-align: center;
}

.mt-1 {
    margin-top: var(--spacing-md);
}

.mb-1 {
    margin-bottom: var(--spacing-md);
}

.hidden {
    display: none !important;
}

/* === FIX: HYDRATION CARD DARK MODE v2 === */
[data-theme="dark"] .hydration-card h3,
[data-theme="dark"] .hydration-card span {
    color: var(--text-primary) !important;
}

[data-theme="dark"] .hydration-card span[id="waterConsumed"] {
    color: #60a5fa !important;
    /* Azul claro legível */
}

/* Botões de baixo (200ml, 500ml...) - Forçar texto claro */
[data-theme="dark"] .hydration-card button.btn-sm {
    color: #ffffff !important;
    background-color: #334155 !important;
    border: 1px solid #475569 !important;
}

/* Botão de cima (+250ml) no Header - Destaque */
[data-theme="dark"] .hydration-card .card-header button.btn-sm {
    background-color: #2563eb !important;
    /* Azul */
    color: #ffffff !important;
    border: none !important;
}