/* ========================================
   Design Tokens (CSS Custom Properties)
   ======================================== */

:root {
    /* Colors - Brand */
    --color-primary: #7C3AED;
    --color-primary-gradient-start: #667eea;
    --color-primary-gradient-end: #764ba2;

    /* Colors - iOS System */
    --color-ios-blue: #007AFF;
    --color-ios-blue-dark: #0051D5;
    --color-ios-green: #34C759;

    /* Colors - Semantic */
    --color-success: #10B981;
    --color-error: #EF4444;
    --color-error-soft: #f35f45;
    --color-warning: #f59e0b;
    --color-warning-bg: #fff3cd;

    /* Colors - Hero Metric Card */
    --color-hero-gradient-start: #581BE6;
    --color-hero-gradient-end: #4516B8;
    --color-hero-text: #FFFFFF;
    --color-hero-text-secondary: rgba(255, 255, 255, 0.95);
    --color-hero-button-bg: rgba(255, 255, 255, 0.2);
    --color-hero-button-border: rgba(255, 255, 255, 0.3);
    --color-hero-button-hover-bg: rgba(255, 255, 255, 0.3);
    --color-hero-button-hover-border: rgba(255, 255, 255, 0.4);
    --color-hero-shadow: rgba(88, 27, 230, 0.4);

    /* Colors - Account Icons */
    --color-account-blue: #3B82F6;
    --color-account-green: #10B981;
    --color-account-purple: #8B5CF6;
    --color-account-orange: #F97316;

    /* Colors - Background */
    --color-bg-primary: white;
    --color-bg-secondary: #f5f5f5;
    --color-bg-tertiary: #f9f9f9;
    --color-bg-progress: #f0f0f0;

    /* Colors - Text */
    --color-text-primary: #000;
    --color-text-secondary: #666;
    --color-text-tertiary: #999;

    /* Colors - Borders */
    --color-border-light: #e5e5e5;
    --color-border-medium: #e0e0e0;
    --color-border-dashed: #ccc;

    /* Spacing Scale */
    --space-4: 4px;
    --space-8: 8px;
    --space-12: 12px;
    --space-14: 14px;
    --space-16: 16px;
    --space-20: 20px;
    --space-24: 24px;
    --space-28: 28px;
    --space-32: 32px;
    --space-40: 40px;
    --space-48: 48px;
    --space-60: 60px;
    --space-80: 80px;
    --space-100: 100px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 28px;
    --radius-3xl: 36px;
    --radius-full: 50%;

    /* Typography - Font Sizes */
    --font-size-xs: 12px;
    --font-size-sm: 13px;
    --font-size-md: 14px;
    --font-size-base: 15px;
    --font-size-lg: 17px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 28px;
    --font-size-4xl: 32px;
    --font-size-5xl: 34px;
    --font-size-6xl: 48px;
    --font-size-7xl: 60px;

    /* Typography - Font Weights */
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Typography - Line Heights */
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.8;
    --line-height-loose: 2;

    /* Shadows */
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.08);

    /* Icon Sizes */
    --icon-xs: 14px;
    --icon-sm: 16px;
    --icon-md: 20px;
    --icon-lg: 24px;
    --icon-xl: 28px;
    --icon-2xl: 32px;
    --icon-3xl: 48px;
    --icon-4xl: 56px;
    --icon-5xl: 60px;
    --icon-6xl: 64px;
    --icon-7xl: 80px;
    --icon-8xl: 120px;
    --icon-9xl: 160px;

    /* Dimensions */
    --height-progress: 8px;
    --height-user-icon: 48px;
    --height-account-icon: 56px;
    --height-balance-icon: 64px;

    /* Transitions */
    --transition-fast: 0.2s;
    --transition-normal: 0.3s;
    --transition-slow: 1s;
    --easing-default: ease-out;
    --easing-linear: linear;

    /* Z-index */
    --z-bottom-nav: 100;

    /* Typography - Font Family */
    --font-family-system: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ========================================
   Dark Mode
   ======================================== */

@media (prefers-color-scheme: dark) {
    :root {
        /* Colors - Background (Dark Mode) */
        --color-bg-primary: #000000;
        --color-bg-secondary: #1C1C1E;
        --color-bg-tertiary: #2C2C2E;
        --color-bg-progress: #3A3A3C;

        /* Colors - Text (Dark Mode) */
        --color-text-primary: #FFFFFF;
        --color-text-secondary: #EBEBF5;
        --color-text-tertiary: #8E8E93;

        /* Colors - Borders (Dark Mode) */
        --color-border-light: #38383A;
        --color-border-medium: #48484A;
        --color-border-dashed: #636366;

        /* Shadows (Dark Mode) */
        --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.3);

        /* Colors - Warning (Dark Mode) */
        --color-warning-bg: #2C2416;

        /* Colors - Hero Metric Card (Dark Mode) */
        --color-hero-gradient-start: #3F0CB6;
        --color-hero-gradient-end: #2D0886;
        --color-hero-shadow: rgba(63, 12, 182, 0.6);
    }

    /* Expenses Card - Uses hero metric dark mode tokens */
    .expenses-card {
        background: linear-gradient(135deg, var(--color-hero-gradient-start) 0%, var(--color-hero-gradient-end) 100%) !important;
        border: none !important;
        box-shadow: 0 8px 32px var(--color-hero-shadow), 0 4px 16px rgba(0, 0, 0, 0.4) !important;
    }

    /* Dashboard header text - brighter */
    .dashboard-welcome {
        color: #EBEBF5;
    }

    .dashboard-title {
        color: #FFFFFF;
    }

    /* Accounts section header - white instead of purple */
    .accounts-section-header h2 {
        color: var(--color-text-primary);
    }

    /* Gradient Card - Dark Mode */
    .gradient-card {
        background: linear-gradient(135deg, #4C3A6D 0%, #3A2D52 100%);
    }

    /* Period Modal Backdrop - Dark Mode */
    .period-modal-backdrop {
        background: rgba(0, 0, 0, 0.7);
    }

    /* Upload Drop Zone - Dark Mode Hover */
    .upload-drop-zone:hover {
        background: rgba(124, 58, 237, 0.1);
    }

    /* Account Item Hover - Dark Mode */
    .account-item:hover {
        background: rgba(124, 58, 237, 0.12);
    }

    /* Period Option Active - Dark Mode */
    .period-option.active {
        background: rgba(124, 58, 237, 0.15);
    }

    /* Button Secondary Hover - Dark Mode */
    .btn-secondary:hover {
        background: rgba(0, 122, 255, 0.2);
    }

    /* Period Option Hover - Dark Mode */
    .period-option:hover {
        background: var(--color-bg-tertiary);
    }
}


/* ========================================
   Reset & Base Styles
   ======================================== */

html {
    scroll-behavior: smooth;
}

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

body {
    font-family: var(--font-family-system);
    background: var(--color-bg-primary);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    min-height: 100dvh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

/* Focus visible for accessibility */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

button {
    -webkit-tap-highlight-color: transparent;
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}


/* ========================================
   Layout
   ======================================== */

.device-frame {
    background: var(--color-bg-primary);
    position: relative;
    width: 100%;
    min-height: inherit;
}

.status-bar {
    display: none;
}

.screen {
    display: none;
    min-height: 100vh;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.screen.active {
    display: block;
    animation: slideIn var(--transition-normal) var(--easing-default);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.content {
    padding: var(--space-32) var(--space-24);
}


/* ========================================
   Typography
   ======================================== */

h1 {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-8);
    line-height: var(--line-height-tight);
}

h2 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-8);
}

h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-12);
}

p {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-normal);
    color: var(--color-text-secondary);
}


/* ========================================
   Buttons
   ======================================== */

.btn-primary {
    background: var(--color-ios-blue);
    color: var(--color-bg-primary);
    border: none;
    padding: var(--space-16) var(--space-24);
    border-radius: var(--radius-md);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    width: 100%;
    transition: background var(--transition-fast);
}

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

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

.btn-secondary {
    background: transparent;
    color: var(--color-ios-blue);
    border: 2px solid var(--color-ios-blue);
    padding: var(--space-14) var(--space-24);
    border-radius: var(--radius-md);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    width: 100%;
    margin-top: var(--space-12);
    transition: background var(--transition-fast);
}

.btn-secondary:hover {
    background: rgba(0, 122, 255, 0.1);
}

.btn-small {
    display: inline-flex;
    align-items: center;
    gap: var(--space-8);
    padding: var(--space-8) var(--space-16);
    font-size: var(--font-size-sm);
}


/* ========================================
   Components - Cards
   ======================================== */

.card {
    background: var(--color-bg-tertiary);
    padding: var(--space-24);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-20);
}

.gradient-card {
    background: linear-gradient(135deg, var(--color-primary-gradient-start) 0%, var(--color-primary-gradient-end) 100%);
    color: var(--color-bg-primary);
    padding: var(--space-32) var(--space-24);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-24);
}


/* ========================================
   Dashboard Components
   ======================================== */

.dashboard-bg {
    background: var(--color-bg-secondary);
    min-height: 100vh;
}

.dashboard-header {
    background: var(--color-bg-primary);
    padding: var(--space-20) var(--space-24);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.user-icon {
    width: var(--height-user-icon);
    height: var(--height-user-icon);
    background: var(--color-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-bg-primary);
}

.profile-photo {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--color-bg-primary);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.section-title {
    text-align: center;
    margin: var(--space-32) 0 var(--space-8);
}

.section-title h2 {
    color: var(--color-text-primary);
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-8);
}

.section-title p {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-base);
}

.balance-card {
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-32) var(--space-24);
    margin: var(--space-24) var(--space-24);
    text-align: center;
    box-shadow: var(--shadow-card);
}

.balance-icon {
    width: var(--height-balance-icon);
    height: var(--height-balance-icon);
    background: var(--color-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-16);
}

.balance-label {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
    letter-spacing: 1px;
    margin-bottom: var(--space-8);
}

.balance-amount {
    color: var(--color-primary);
    font-size: var(--font-size-6xl);
    font-weight: var(--font-weight-bold);
}

/* ========================================
   Hero Metric Card Component

   Bright purple gradient card for displaying key financial metrics.
   Used by: .expenses-card (dashboard), .primary-metric (analytics)

   Light Mode: Rich purple gradient (#581BE6 → #4516B8)
   Dark Mode: Vibrant purple gradient (#3F0CB6 → #2D0886)

   Text Styling:
   - Labels: White semi-bold (rgba(255,255,255,0.95))
   - Values: White bold with text shadow
   - Buttons: Frosted glass (white with 20% opacity)
   ======================================== */

.hero-metric-card {
    background: linear-gradient(135deg, var(--color-hero-gradient-start) 0%, var(--color-hero-gradient-end) 100%);
    border: none;
    border-radius: var(--radius-xl);
    padding: var(--space-32) var(--space-24);
    margin: var(--space-24) var(--space-24);
    box-shadow: 0 8px 24px var(--color-hero-shadow), 0 4px 12px rgba(0, 0, 0, 0.15);
    text-align: center;
}

/* Expenses Card - Applies hero metric styling */
.expenses-card {
    background: linear-gradient(135deg, var(--color-hero-gradient-start) 0%, var(--color-hero-gradient-end) 100%);
    border: none;
    border-radius: var(--radius-xl);
    padding: var(--space-32) var(--space-24);
    margin: var(--space-24) var(--space-24);
    box-shadow: 0 8px 24px var(--color-hero-shadow), 0 4px 12px rgba(0, 0, 0, 0.15);
    text-align: center;
}

/* Dynamic Header */
.expenses-header-text {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-8);
    margin-bottom: var(--space-24);
    flex-wrap: wrap;
}

.expenses-prefix {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-hero-text-secondary);
}

.expenses-period-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-12);
    background: var(--color-hero-button-bg);
    border: 1px solid var(--color-hero-button-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-hero-text);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.expenses-period-btn:hover {
    background: var(--color-hero-button-hover-bg);
    border-color: var(--color-hero-button-hover-border);
}

/* Hero Amount */
.expenses-amount {
    color: var(--color-hero-text);
    font-size: 56px;
    font-weight: var(--font-weight-bold);
    line-height: 1;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Period Selector Modal */
.period-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
}

.period-modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}

.period-modal-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    padding: var(--space-24);
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

.period-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-24);
}

.period-modal-header h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
}

.modal-close-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--space-4);
    color: var(--color-text-secondary);
}

.period-options {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
    margin-bottom: var(--space-24);
}

.period-option {
    display: flex;
    align-items: center;
    gap: var(--space-16);
    padding: var(--space-16);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.period-option:hover {
    background: var(--color-bg-secondary);
    border-color: var(--color-primary);
}

.period-option.active {
    border-color: var(--color-primary);
    background: rgba(124, 58, 237, 0.05);
}

.period-option span {
    flex: 1;
    text-align: left;
    font-weight: var(--font-weight-medium);
}

.period-option .period-check {
    margin-left: auto;
}


/* ========================================
   Account List Components
   ======================================== */

/* Accounts Section Card */
.accounts-section-card {
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    margin: 0 var(--space-24) var(--space-100);
    padding: var(--space-20);
    box-shadow: var(--shadow-card);
}

.accounts-section-header {
    padding: var(--space-4) var(--space-8);
    margin-bottom: var(--space-16);
}

.accounts-section-header h2 {
    color: var(--color-text-primary);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

/* Account List Compact */
.account-list-compact {
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
}

.account-list {
    padding: 0 var(--space-24) var(--space-100);
}

.account-item {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-16);
    display: flex;
    align-items: center;
    gap: var(--space-16);
    transition: all var(--transition-fast);
}

.account-item:hover {
    background: rgba(124, 58, 237, 0.05);
}

.account-icon {
    width: var(--height-account-icon);
    height: var(--height-account-icon);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.account-icon.blue {
    background: var(--color-account-blue);
}

.account-icon.green {
    background: var(--color-account-green);
}

.account-icon.purple {
    background: var(--color-account-purple);
}

.account-icon.orange {
    background: var(--color-account-orange);
}

.account-info {
    flex: 1;
}

.account-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-4);
    color: var(--color-text-primary);
}

.account-type {
    font-size: var(--font-size-md);
    color: var(--color-text-tertiary);
}

.account-balance {
    text-align: right;
}

.account-amount {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.account-change {
    font-size: var(--font-size-md);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    justify-content: flex-end;
}

.account-change.positive {
    color: var(--color-success);
}

.account-change.negative {
    color: var(--color-error);
}


/* ========================================
   Bottom Navigation
   ======================================== */

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border-light);
    display: flex;
    justify-content: space-around;
    padding: var(--space-12) 0 var(--space-20);
    z-index: var(--z-bottom-nav);
}

.nav-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    color: var(--color-text-tertiary);
    font-size: var(--font-size-xs);
    cursor: pointer;
    text-decoration: none;
}

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

.nav-tab.active .nav-tab-icon {
    color: var(--color-primary);
}

.nav-tab-icon {
    width: var(--icon-lg);
    height: var(--icon-lg);
    color: var(--color-text-tertiary);
}


/* ========================================
   App Icon
   ======================================== */

.app-icon {
    width: var(--icon-8xl);
    height: var(--icon-8xl);
    background: linear-gradient(135deg, var(--color-primary-gradient-start) 0%, var(--color-primary-gradient-end) 100%);
    border-radius: var(--radius-2xl);
    margin: 0 auto var(--space-32);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--icon-5xl);
}


/* ========================================
   Utility Classes
   ======================================== */

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

.mb-40 {
    margin-bottom: var(--space-40);
}

.mb-32 {
    margin-bottom: var(--space-32);
}

.mb-24 {
    margin-bottom: var(--space-24);
}

.mt-60 {
    margin-top: var(--space-60);
}


/* ========================================
   Lists
   ======================================== */

ul {
    list-style: none;
    color: var(--color-text-secondary);
    line-height: var(--line-height-loose);
}

ul li:before {
    content: "✓ ";
    color: var(--color-ios-green);
    font-weight: bold;
    margin-right: var(--space-8);
}


/* ========================================
   Loading Spinner
   ======================================== */

.spinner {
    width: var(--icon-7xl);
    height: var(--icon-7xl);
    border: 6px solid var(--color-bg-progress);
    border-top: 6px solid var(--color-ios-blue);
    border-radius: var(--radius-full);
    animation: spin var(--transition-slow) var(--easing-linear) infinite;
    margin: var(--space-80) auto var(--space-40);
}

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


/* ========================================
   Progress Bar
   ======================================== */

.progress-bar {
    background: var(--color-bg-progress);
    height: var(--height-progress);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.progress-fill {
    background: var(--color-ios-blue);
    height: 100%;
    width: 65%;
    transition: width var(--transition-normal);
}


/* ========================================
   File Upload Components
   ======================================== */

.upload-area {
    border: 3px dashed var(--color-border-dashed);
    border-radius: var(--radius-lg);
    padding: var(--space-60) var(--space-24);
    text-align: center;
    margin-bottom: var(--space-24);
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.upload-area:hover {
    border-color: var(--color-ios-blue);
}

.file-list {
    background: var(--color-bg-tertiary);
    padding: var(--space-20);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-24);
}

.file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-12) 0;
    border-bottom: 1px solid var(--color-border-medium);
}

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


/* ========================================
   Inline Style Replacements
   ======================================== */

/* Status bar icons */
.status-bar-icons {
    display: flex;
    gap: var(--space-8);
    align-items: center;
}

/* Dashboard header text */
.dashboard-welcome {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-md);
    margin-bottom: var(--space-4);
}

.dashboard-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
}

/* Icon sizes for specific uses */
.icon-white {
    color: var(--color-bg-primary);
}

.icon-size-14 { width: var(--icon-xs); height: var(--icon-xs); }
.icon-size-16 { width: var(--icon-sm); height: var(--icon-sm); }
.icon-size-20 { width: var(--icon-md); height: var(--icon-md); }
.icon-size-24 { width: var(--icon-lg); height: var(--icon-lg); }
.icon-size-28 { width: var(--icon-xl); height: var(--icon-xl); }
.icon-size-32 { width: var(--icon-2xl); height: var(--icon-2xl); }
.icon-size-48 { width: var(--icon-3xl); height: var(--icon-3xl); }
.icon-size-60 { width: var(--icon-5xl); height: var(--icon-5xl); }

/* Vertical alignment */
.v-align-middle { vertical-align: middle; }

/* Margins */
.mr-8 { margin-right: var(--space-8); }
.ml-8 { margin-left: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.mb-16 { margin-bottom: var(--space-16); }

/* Text colors */
.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-tertiary { color: var(--color-text-tertiary); }
.text-success { color: var(--color-ios-green); }
.text-warning { color: var(--color-warning); }
.text-ios-blue { color: var(--color-ios-blue); }

/* Font sizes */
.font-sm { font-size: var(--font-size-sm); }
.font-md { font-size: var(--font-size-md); }
.font-base { font-size: var(--font-size-base); }
.font-lg { font-size: var(--font-size-lg); }
.font-6xl { font-size: var(--font-size-6xl); }

/* Font weights */
.font-bold { font-weight: var(--font-weight-bold); }

/* Opacity */
.opacity-95 { opacity: 0.95; }

/* Text align */
.text-left { text-align: left; }

/* Line height */
.line-height-relaxed { line-height: var(--line-height-relaxed); }

/* Insights/Warning card */
.insights-card {
    background: var(--color-warning-bg);
    padding: var(--space-24);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-20);
}

.insights-card h3 {
    margin-bottom: var(--space-16);
}

.insights-card-content {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

/* Display utilities */
.display-none { display: none; }

/* Flex utilities */
.flex-between {
    display: flex;
    justify-content: space-between;
}

.align-center {
    align-items: center;
}

/* Text size utilities */
.text-small {
    font-size: var(--font-size-sm);
}


/* ========================================
   Upload Screen Components
   ======================================== */

/* Close Button in Header */
.close-btn {
    width: var(--height-user-icon);
    height: var(--height-user-icon);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-full);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.close-btn:hover {
    background: var(--color-border-light);
}

/* Upload Content Container */
.upload-content {
    padding: var(--space-24);
    padding-bottom: var(--space-100);
}

/* Upload Instructions */
.upload-instructions {
    text-align: center;
    padding: var(--space-24);
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-24);
}

.instruction-icon {
    width: var(--height-balance-icon);
    height: var(--height-balance-icon);
    background: rgba(52, 199, 89, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-16);
}

/* Format Chips */
.format-chips {
    display: flex;
    gap: var(--space-12);
    justify-content: center;
    flex-wrap: wrap;
}

.format-chip {
    display: flex;
    align-items: center;
    padding: var(--space-8) var(--space-16);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-semibold);
}

/* Upload Drop Zone */
.upload-drop-zone {
    background: var(--color-bg-primary);
    border: 2px dashed var(--color-border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-60) var(--space-24);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: var(--space-32);
}

.upload-drop-zone:hover {
    border-color: var(--color-primary);
    background: rgba(124, 58, 237, 0.02);
}

.upload-icon-large {
    width: var(--icon-8xl);
    height: var(--icon-8xl);
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.1) 0%, rgba(124, 58, 237, 0.05) 100%);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-24);
    color: var(--color-primary);
}

/* Uploaded Files Section */
.uploaded-files-section {
    margin-bottom: var(--space-32);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-16);
}

.section-header h3 {
    margin: 0;
    font-size: var(--font-size-lg);
}

.file-count {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    background: var(--color-bg-secondary);
    padding: var(--space-4) var(--space-12);
    border-radius: var(--radius-full);
}

/* Uploaded File Cards */
.uploaded-file-card {
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-16);
    margin-bottom: var(--space-12);
    display: flex;
    align-items: center;
    gap: var(--space-16);
    box-shadow: var(--shadow-card);
}

.file-card-icon {
    width: var(--height-user-icon);
    height: var(--height-user-icon);
    background: rgba(124, 58, 237, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.file-card-info {
    flex: 1;
}

.file-card-name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.file-card-meta {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.file-card-status {
    flex-shrink: 0;
}

/* Upload Actions */
.upload-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
}

.upload-actions .btn-primary,
.upload-actions .btn-secondary {
    display: flex;
    align-items: center;
    justify-content: center;
}


/* ========================================
   Processing Screen Components
   ======================================== */

.processing-content {
    padding: var(--space-32) var(--space-24);
    padding-bottom: var(--space-100);
}

.processing-animation {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-40);
}

.processing-status {
    margin-bottom: var(--space-48);
}

/* Processing Steps */
.processing-steps {
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-24);
    box-shadow: var(--shadow-card);
}

.processing-step {
    display: flex;
    align-items: center;
    gap: var(--space-16);
    padding: var(--space-16) 0;
}

.processing-step:not(:last-child) {
    border-bottom: 1px solid var(--color-border-light);
}

.step-icon {
    width: var(--space-40);
    height: var(--space-40);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--color-text-tertiary);
}

.processing-step.completed .step-icon {
    background: var(--color-success);
    color: var(--color-bg-primary);
}

.processing-step.active .step-icon {
    background: var(--color-primary);
    color: var(--color-bg-primary);
}

.step-text {
    flex: 1;
}

.step-label {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
}

.step-detail {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

/* Spin Animation */
.spin-icon {
    animation: spin var(--transition-slow) var(--easing-linear) infinite;
}

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


/* Floating Action Button (FAB) */
.fab {
    position: fixed;
    bottom: 90px;
    right: var(--space-24);
    width: var(--height-account-icon);
    height: var(--height-account-icon);
    background: var(--color-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.4);
    cursor: pointer;
    z-index: 99;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.fab:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(124, 58, 237, 0.5);
}

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


/* ========================================
   Insights Header
   ======================================== */

.insights-header {
    margin-bottom: var(--space-32);
}

.insights-header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-8);
}

.insights-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin: 0;
}

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

.insights-refresh-btn:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
}

.insights-refresh-btn:active {
    transform: scale(0.95);
}

.insights-refresh-btn i {
    transition: transform 0.3s ease;
}

.insights-refresh-btn:hover i {
    transform: rotate(45deg);
}

.insights-timestamp {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin: 0;
}

/* Dark mode adjustments */
@media (prefers-color-scheme: dark) {
    .insights-refresh-btn {
        background: rgba(255, 255, 255, 0.08);
        color: var(--color-text-secondary);
    }

    .insights-refresh-btn:hover {
        background: rgba(255, 255, 255, 0.12);
        color: var(--color-text-primary);
    }
}

/* ========================================
   Insights Cards
   ======================================== */

.insight-card {
    position: relative;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-16);
    overflow: hidden;
    animation: slideInCard 0.3s ease-out both;
}

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

/* Stagger card animations */
.insight-card:nth-child(1) { animation-delay: 0s; }
.insight-card:nth-child(2) { animation-delay: 0.05s; }
.insight-card:nth-child(3) { animation-delay: 0.1s; }
.insight-card:nth-child(4) { animation-delay: 0.15s; }
.insight-card:nth-child(5) { animation-delay: 0.2s; }
.insight-card:nth-child(6) { animation-delay: 0.25s; }
.insight-card:nth-child(7) { animation-delay: 0.3s; }
.insight-card:nth-child(n+8) { animation-delay: 0.35s; }

.insight-card-swipeable {
    background: var(--color-bg-primary);
    box-shadow: var(--shadow-card);
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow var(--transition-fast);
    position: relative;
    z-index: 1;
    touch-action: pan-y;
    will-change: transform;
}

.insight-card-swipeable:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

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

.insight-card-body {
    display: flex;
    flex-direction: row;
    min-height: 100px;
}

.insight-card-header {
    display: flex;
    align-items: stretch;
    width: 100%;
}

.insight-card-icon-wrapper {
    flex-shrink: 0;
    width: 40px;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: var(--space-20);
    color: white;
}

/* Icon color variants */
.insight-icon-red {
    background: linear-gradient(135deg, #FF6B6B 0%, #EE5A6F 100%);
}

.insight-icon-orange {
    background: linear-gradient(135deg, #FF8C42 0%, #F77737 100%);
}

.insight-icon-purple {
    background: linear-gradient(135deg, #A78BFA 0%, #8B5CF6 100%);
}

.insight-icon-blue {
    background: linear-gradient(135deg, #60A5FA 0%, #3B82F6 100%);
}

.insight-icon-green {
    background: linear-gradient(135deg, #4ADE80 0%, #22C55E 100%);
}

.insight-card-content-wrapper {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
    padding: var(--space-20);
}

.insight-card-title-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-12);
}

.insight-card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin: 0;
    line-height: var(--line-height-tight);
}

.insight-card-message {
    font-size: var(--font-size-md);
    color: var(--color-text-secondary);
    line-height: var(--line-height-normal);
    margin: 0;
}

/* Swipe Actions */
.insight-card-actions {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 180px;
    display: flex;
    flex-direction: row;
    gap: 1px;
    background: var(--color-error);
    z-index: 0;
}

.insight-action-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    border: none;
    background: transparent;
    color: white;
    cursor: pointer;
    padding: var(--space-8);
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
}

.insight-action-btn:hover {
    opacity: 0.85;
}

.insight-action-btn:active {
    transform: scale(0.95);
    opacity: 0.7;
}

.insight-action-btn span {
    text-align: center;
    line-height: 1.2;
}

.insight-action-taken {
    background: rgba(0, 0, 0, 0.15);
}

.insight-action-irrelevant {
    background: rgba(0, 0, 0, 0.25);
}

/* Priority Badges */
.priority-badge {
    flex-shrink: 0;
    padding: var(--space-4) var(--space-12);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.priority-badge.priority-high {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
}

.priority-badge.priority-medium {
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-warning);
}

.priority-badge.priority-low {
    background: var(--color-bg-secondary);
    color: var(--color-text-tertiary);
}

/* Insight Detail Modal */
.insight-detail-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.insight-detail-modal.active {
    opacity: 1;
}

.insight-detail-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    cursor: pointer;
}

.insight-detail-content {
    position: relative;
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-24);
    max-width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.insight-detail-modal.active .insight-detail-content {
    transform: scale(1);
}

.insight-detail-header {
    display: flex;
    justify-content: flex-end;
    margin-bottom: var(--space-16);
}

.insight-detail-close {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--space-8);
    color: var(--color-text-secondary);
    transition: opacity var(--transition-fast);
}

.insight-detail-close:hover {
    opacity: 0.7;
}

.insight-detail-body {
    display: flex;
    flex-direction: column;
    gap: var(--space-16);
}

.insight-detail-icon-wrapper {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: var(--space-8);
}

.insight-detail-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin: 0 0 var(--space-12) 0;
}

.insight-detail-message {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: var(--line-height-normal);
    margin: 0 0 var(--space-24) 0;
}

.insight-detail-summary {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-normal);
    margin: 0 0 var(--space-20) 0;
}

.insight-detail-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-16);
    background: var(--color-bg-secondary);
    padding: var(--space-20);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-24);
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.stat-value {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.stat-value.text-success {
    color: var(--color-success);
}

.stat-value.text-warning {
    color: var(--color-warning);
}

.stat-value.text-error {
    color: var(--color-error);
}

.insight-detail-section {
    margin-bottom: var(--space-24);
}

.insight-detail-section h4 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin: 0 0 var(--space-12) 0;
}

.detail-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.detail-list li {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    padding: var(--space-8) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.detail-list li:last-child {
    border-bottom: none;
}

.detail-list li:before {
    content: none;
}

.insight-detail-tip {
    display: flex;
    align-items: flex-start;
    gap: var(--space-12);
    background: rgba(124, 58, 237, 0.05);
    border-left: 3px solid var(--color-primary);
    padding: var(--space-16);
    border-radius: var(--radius-md);
    margin-top: var(--space-24);
}

.insight-detail-tip i {
    flex-shrink: 0;
    color: var(--color-primary);
    margin-top: 2px;
}

.insight-detail-tip p {
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    line-height: var(--line-height-normal);
    margin: 0;
}

/* Dark mode adjustments for insights */
@media (prefers-color-scheme: dark) {
    .priority-badge.priority-high {
        background: rgba(239, 68, 68, 0.2);
        color: #FCA5A5;
    }

    .priority-badge.priority-medium {
        background: rgba(245, 158, 11, 0.2);
        color: #FCD34D;
    }

    .priority-badge.priority-low {
        background: var(--color-bg-tertiary);
        color: var(--color-text-tertiary);
    }

    .insight-card:hover {
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    }

    .insight-detail-backdrop {
        background: rgba(0, 0, 0, 0.7);
    }

    .insight-detail-content {
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
    }

    .insight-detail-stats {
        background: var(--color-bg-tertiary);
    }

    .insight-detail-tip {
        background: rgba(124, 58, 237, 0.15);
        border-left-color: #A78BFA;
    }

    .insight-detail-tip i {
        color: #A78BFA;
    }

    .insight-card-swipeable:hover {
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    }

    .insight-card-actions {
        background: #DC2626;
    }
}

/* ========================================
   Empty and Loading States
   ======================================== */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-48) var(--space-24);
    text-align: center;
    animation: fadeIn 0.4s ease-out;
}

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

.empty-state-icon {
    width: 64px;
    height: 64px;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-20);
    animation: fadeInScale 0.5s ease-out 0.1s both;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.empty-state-message {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    margin: 0 0 var(--space-8) 0;
}

.empty-state-hint {
    font-size: var(--font-size-base);
    color: var(--color-text-tertiary);
    margin: 0;
}

/* Spinner */
.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-border-light);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--space-20);
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* View Dismissed Link */
.view-dismissed-container {
    display: flex;
    justify-content: center;
    margin-top: var(--space-24);
    padding-bottom: var(--space-24);
}

.view-dismissed-link {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    padding: var(--space-12) var(--space-20);
    border: none;
    background: transparent;
    color: var(--color-primary);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: opacity var(--transition-fast);
}

.view-dismissed-link:hover {
    opacity: 0.7;
}

.view-dismissed-link i {
    flex-shrink: 0;
}

/* Dark mode adjustments for empty/loading states */
@media (prefers-color-scheme: dark) {
    .spinner {
        border-color: var(--color-border);
        border-top-color: #A78BFA;
    }
}

/* ========================================
   Feedback Bottom Sheet
   ======================================== */

.feedback-bottom-sheet {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1100;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.feedback-bottom-sheet.active {
    opacity: 1;
}

.feedback-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    cursor: pointer;
}

.feedback-sheet-content {
    position: relative;
    background: var(--color-bg-primary);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    padding: var(--space-24);
    width: 100%;
    max-width: 600px;
    box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.2);
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.feedback-bottom-sheet.active .feedback-sheet-content {
    transform: translateY(0);
}

.feedback-sheet-handle {
    width: 40px;
    height: 4px;
    background: var(--color-border-light);
    border-radius: var(--radius-full);
    margin: 0 auto var(--space-20) auto;
}

.feedback-sheet-body {
    display: flex;
    flex-direction: column;
    gap: var(--space-20);
}

.feedback-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    text-align: center;
    margin: 0;
}

.feedback-actions {
    display: flex;
    gap: var(--space-12);
}

.feedback-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-8);
    padding: var(--space-20);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-border);
    background: transparent;
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.feedback-btn:hover {
    border-color: var(--color-primary);
    background: rgba(124, 58, 237, 0.05);
}

.feedback-btn-positive:hover {
    border-color: var(--color-success);
    background: rgba(34, 197, 94, 0.05);
    color: var(--color-success);
}

.feedback-btn-negative:hover {
    border-color: var(--color-error);
    background: rgba(239, 68, 68, 0.05);
    color: var(--color-error);
}

.feedback-reasons {
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
}

.feedback-reason-btn {
    display: flex;
    align-items: center;
    gap: var(--space-12);
    padding: var(--space-16);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: transparent;
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.feedback-reason-btn:hover {
    border-color: var(--color-primary);
    background: rgba(124, 58, 237, 0.05);
}

.feedback-reason-btn i {
    flex-shrink: 0;
    color: var(--color-text-tertiary);
}

.feedback-cancel {
    padding: var(--space-12);
    border: none;
    background: transparent;
    color: var(--color-text-tertiary);
    font-size: var(--font-size-base);
    text-align: center;
    cursor: pointer;
    margin-top: var(--space-8);
    transition: opacity var(--transition-fast);
}

.feedback-cancel:hover {
    opacity: 0.7;
}

/* Feedback section in detail view */
.insight-detail-feedback {
    border-top: 1px solid var(--color-border-light);
    padding-top: var(--space-24);
    margin-top: var(--space-24);
}

.feedback-question {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    text-align: center;
    margin: 0 0 var(--space-16) 0;
}

.insight-detail-feedback .feedback-actions {
    justify-content: center;
    max-width: 400px;
    margin: 0 auto;
}

.insight-detail-feedback .feedback-btn {
    flex: 0 1 150px;
}

/* Dark mode adjustments for feedback */
@media (prefers-color-scheme: dark) {
    .feedback-backdrop {
        background: rgba(0, 0, 0, 0.7);
    }

    .feedback-sheet-content {
        box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.6);
    }

    .feedback-sheet-handle {
        background: var(--color-border);
    }

    .feedback-btn:hover {
        background: rgba(124, 58, 237, 0.15);
    }

    .feedback-btn-positive:hover {
        background: rgba(34, 197, 94, 0.15);
    }

    .feedback-btn-negative:hover {
        background: rgba(239, 68, 68, 0.15);
    }

    .feedback-reason-btn:hover {
        background: rgba(124, 58, 237, 0.15);
    }
}


/* ========================================
   Responsive Adjustments
   ======================================== */

@media (min-width: 768px) {
    .content {
        padding: var(--space-48) var(--space-40);
    }

    h1 {
        font-size: var(--font-size-6xl);
    }

    h2 {
        font-size: var(--font-size-5xl);
    }

    .app-icon {
        width: var(--icon-9xl);
        height: var(--icon-9xl);
        border-radius: var(--radius-3xl);
    }

    /* Insights responsive improvements */
    .insights-title {
        font-size: var(--font-size-5xl);
    }

    .insights-refresh-btn {
        width: 44px;
        height: 44px;
    }

    .insight-detail-content {
        max-width: 600px;
    }

    .insight-detail-stats {
        grid-template-columns: repeat(3, 1fr);
    }

    .feedback-sheet-content {
        max-width: 500px;
    }

    /* Disable long-press on desktop (use click for feedback) */
    .insight-card-swipeable {
        touch-action: auto;
    }
}