/* modern-styles.css - Updated with proper contrast fixes and full-width menu */

/* CSS Custom Properties */
:root {
    /* Modern Color Palette */
    --primary-50: #f0f4ff;
    --primary-100: #e0e7ff;
    --primary-200: #c7d2fe;
    --primary-300: #a5b4fc;
    --primary-400: #818cf8;
    --primary-500: #6366f1;
    --primary-600: #4f46e5;
    --primary-700: #4338ca;
    --primary-800: #3730a3;
    --primary-900: #312e81;

    --success-50: #f0fdf4;
    --success-100: #dcfce7;
    --success-200: #bbf7d0;
    --success-300: #86efac;
    --success-400: #4ade80;
    --success-500: #22c55e;
    --success-600: #16a34a;
    --success-700: #15803d;
    --success-800: #166534;
    --success-900: #14532d;

    --error-50: #fef2f2;
    --error-100: #fee2e2;
    --error-200: #fecaca;
    --error-300: #fca5a5;
    --error-400: #f87171;
    --error-500: #ef4444;
    --error-600: #dc2626;
    --error-700: #b91c1c;
    --error-800: #991b1b;
    --error-900: #7f1d1d;

    --warning-50: #fffbeb;
    --warning-100: #fef3c7;
    --warning-200: #fde68a;
    --warning-300: #fcd34d;
    --warning-400: #fbbf24;
    --warning-500: #f59e0b;
    --warning-600: #d97706;
    --warning-700: #b45309;
    --warning-800: #92400e;
    --warning-900: #78350f;

    /* Neutral Colors */
    --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;

    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-overlay: rgba(15, 23, 42, 0.1);
    --bg-glass: rgba(255, 255, 255, 0.8);
    --bg-glass-dark: rgba(255, 255, 255, 0.1);

    /* Typography */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --text-inverse: #ffffff;

    /* Spacing Scale */
    --space-px: 1px;
    --space-0: 0;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-7: 1.75rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;

    /* Border Radius */
    --radius-none: 0;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.25);
    --glass-border: rgba(255, 255, 255, 0.18);
    --glass-backdrop: blur(16px);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Animation Easing */
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Global Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-variation-settings: 'wght' 400;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-secondary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography Scale */
h1 {
    font-size: 2.25rem;
    font-variation-settings: 'wght' 700;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

h2 {
    font-size: 1.875rem;
    font-variation-settings: 'wght' 600;
    line-height: 1.3;
    letter-spacing: -0.025em;
}

h3 {
    font-size: 1.5rem;
    font-variation-settings: 'wght' 600;
    line-height: 1.4;
}

/* App Container */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

/* Animated Background */
.animated-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
    opacity: 0.6;
}

.floating-shape {
    position: absolute;
    border-radius: var(--radius-full);
    animation: float 20s infinite linear;
    opacity: 0.1;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: linear-gradient(45deg, var(--primary-400), var(--primary-600));
    top: -150px;
    left: -150px;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: linear-gradient(45deg, var(--success-400), var(--success-600));
    top: 20%;
    right: -100px;
    animation-delay: -5s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    background: linear-gradient(45deg, var(--warning-400), var(--warning-600));
    bottom: 10%;
    left: 10%;
    animation-delay: -10s;
}

.shape-4 {
    width: 250px;
    height: 250px;
    background: linear-gradient(45deg, var(--primary-300), var(--primary-500));
    bottom: -125px;
    right: 10%;
    animation-delay: -15s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(30px, -30px) rotate(90deg); }
    50% { transform: translate(-20px, 20px) rotate(180deg); }
    75% { transform: translate(-30px, -10px) rotate(270deg); }
}

/* Navigation */
.main-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border-bottom: 1px solid var(--glass-border);
    padding: var(--space-4) 0;
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-button {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: var(--radius-lg);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.nav-button:hover {
    background: var(--bg-glass);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.nav-button:active {
    transform: translateY(0);
}

.app-title {
    display: flex;
    align-items: center;
    position: relative;
}

.app-title h1 {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.title-accent {
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
    border-radius: var(--radius-full);
    opacity: 0.6;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-8) var(--space-6);
}

.content-wrapper {
    width: 100%;
    max-width: 600px;
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

/* Status Cards */
.status-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.status-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.status-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s;
}

.status-card:hover::before {
    left: 100%;
}

.status-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 255, 255, 0.3);
}

.card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-600);
}

.card-content {
    flex: 1;
}

.card-label {
    display: block;
    font-size: 0.875rem;
    font-variation-settings: 'wght' 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-1);
}

.card-value {
    display: block;
    font-size: 1.75rem;
    font-variation-settings: 'wght' 700;
    color: var(--text-primary);
    line-height: 1;
}

/* Timer States */
.timer-display.warning {
    color: var(--warning-600);
    animation: pulse 1s infinite;
}

.timer-display.danger {
    color: var(--error-600);
    animation: pulse 0.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Problem Section */
.problem-section {
    position: relative;
}

.problem-card {
    background: var(--bg-primary);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    position: relative;
    transition: all var(--transition-normal);
}

.problem-card:hover {
    box-shadow: var(--shadow-2xl);
    transform: translateY(-2px);
}

.problem-header {
    padding: var(--space-6) var(--space-6) 0;
}

.problem-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.indicator-dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: var(--primary-500);
    animation: breathe 2s infinite;
}

@keyframes breathe {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.2); }
}

.indicator-text {
    font-size: 0.875rem;
    font-variation-settings: 'wght' 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.problem-content {
    padding: var(--space-6);
    text-align: center;
}

.math-expression {
    font-size: 3.5rem;
    font-variation-settings: 'wght' 800;
    color: var(--text-primary);
    margin-bottom: var(--space-8);
    line-height: 1;
    letter-spacing: -0.02em;
    transition: all var(--transition-fast);
}

.answer-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    align-items: center;
}

.answer-input {
    width: 100%;
    max-width: 200px;
    padding: var(--space-4) var(--space-6);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-xl);
    font-size: 1.5rem;
    font-variation-settings: 'wght' 600;
    text-align: center;
    background: var(--bg-primary);
    color: var(--text-primary);
    outline: none;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.answer-input:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1), var(--shadow-md);
    transform: scale(1.02);
}

.answer-input::placeholder {
    color: var(--text-tertiary);
    font-variation-settings: 'wght' 400;
}

.submit-button {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    border: none;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: var(--text-inverse);
    font-size: 1.125rem;
    font-variation-settings: 'wght' 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.submit-button:hover {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.submit-button:active {
    transform: translateY(0);
}

.submit-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s;
}

.submit-button:active::before {
    width: 300px;
    height: 300px;
}

.button-icon {
    transition: transform var(--transition-fast);
}

.submit-button:hover .button-icon {
    transform: translateX(2px);
}

/* Progress Section */
.progress-section {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    text-align: center;
}

.accuracy-display {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.accuracy-label {
    font-size: 0.875rem;
    font-variation-settings: 'wght' 600; /* Bolder */
    color: var(--text-primary); /* Darker color */
    flex-shrink: 0;
}

.accuracy-bar {
    flex: 1;
    height: 8px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.accuracy-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success-400), var(--success-600));
    border-radius: var(--radius-full);
    width: 0%;
    transition: width 1s var(--ease-out);
    position: relative;
}

.accuracy-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.accuracy-percentage {
    font-size: 1.125rem;
    font-variation-settings: 'wght' 700; /* Bolder */
    color: var(--text-primary);
    flex-shrink: 0;
    min-width: 50px;
}

/* FIXED: Full-screen menu - now properly covers entire screen */
.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    overflow-y: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
}

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

/* FIXED: Menu panel now wider and properly centered */
.menu-panel {
    border: 1px solid;
    width: 100%;
    max-width: 900px; /* Much wider to accommodate side-by-side operation sections */
    min-width: 700px; /* Ensure minimum width */
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    transform: translateY(30px) scale(0.9);
    transition: all var(--transition-normal) var(--ease-out);
    max-height: 90vh;
    overflow-y: auto;
}

.menu-overlay.active .menu-panel {
    transform: translateY(0) scale(1);
}

.menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6);
    border-bottom: 1px solid var(--gray-200);
    background: var(--bg-secondary);
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
    position: sticky;
    top: 0;
    z-index: 10;
}

.menu-header h2 {
    color: var(--text-primary);
    margin: 0;
}

.close-button {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: var(--radius-lg);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.close-button:hover {
    background: var(--gray-100);
    color: var(--primary-600);
}

.menu-content {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

/* Settings Sections */
.settings-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.section-title {
    font-size: 1.125rem;
    font-variation-settings: 'wght' 600;
    color: var(--text-primary);
    margin: 0;
}

/* Timer Selector */
.timer-selector {
    display: flex;
    gap: var(--space-3);
}

.duration-button {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    border: 2px solid var(--gray-300); /* Darker border */
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    font-variation-settings: 'wght' 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.duration-button:hover {
    border-color: var(--primary-500);
    background: var(--primary-50);
    color: var(--primary-700); /* Darker text on light background */
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}


.duration-button.active {
    border-color: var(--primary-500);
    background: var(--primary-500);
    color: white; /* White text on dark background */
    box-shadow: var(--shadow-md);
}

.duration-button.active:hover {
    background: var(--primary-600);
    border-color: var(--primary-600);
    color: white; /* Keep white text */
}

/* FIXED: Operations grid now wider to show sections side by side */
.operations-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* Two columns side by side */
    gap: var(--space-6);
    width: 100%;
}

/* Operation sections - always visible, wider */
.operation-section {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
    transition: all var(--transition-normal);
    min-height: fit-content;
    overflow: hidden;
}

/* FIXED: Operation header contrast - proper dark text on light backgrounds */
.operation-header {
    display: flex;
    align-items: center;
    padding: var(--space-4);
    cursor: pointer;
    background: var(--gray-50);
    transition: all var(--transition-fast);
    border-bottom: 1px solid var(--gray-200);
}

.operation-header:hover {
    background: var(--gray-100);
}

.operation-header.expanded {
    background: var(--primary-50);
    border-bottom-color: var(--primary-200);
}

/* FIXED: Operation icons - proper contrast */
.operation-header .operation-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--gray-300), var(--gray-400)); /* FIXED: Darker background */
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-900); /* FIXED: Dark color for proper contrast */
    font-size: 1.25rem;
    font-variation-settings: 'wght' 700;
    margin-right: var(--space-3);
    transition: all var(--transition-fast);
}

.operation-header h4 {
    flex: 1;
    margin: 0;
    font-size: 1.125rem;
    font-variation-settings: 'wght' 600;
    color: var(--gray-900); /* FIXED: Darker text for better contrast */
    transition: all var(--transition-fast);
}

/* Style for operation headers with selections */
.operation-header.has-selections {
    background: var(--primary-100);
    border-bottom-color: var(--primary-300);
}

.operation-header.has-selections .operation-icon {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: white; /* White text on dark background */
    box-shadow: var(--shadow-md);
}

.operation-header.has-selections h4 {
    color: var(--primary-800); /* FIXED: Dark purple for contrast */
    font-variation-settings: 'wght' 700;
}

/* FIXED: Hover states for operation headers */
.operation-header:hover .operation-icon {
    background: linear-gradient(135deg, var(--gray-400), var(--gray-500)); /* FIXED: Even darker on hover */
    color: var(--gray-100); /* FIXED: Light text on dark background */
}

.operation-header:hover h4 {
    color: var(--gray-800); /* FIXED: Keep dark but slightly lighter on hover */
}

.operation-header.has-selections:hover h4 {
    color: var(--primary-900); /* FIXED: Darker for better contrast */
}

.expand-icon {
    color: var(--text-secondary);
    transition: transform var(--transition-fast);
    font-size: 0.875rem;
}

.operation-header.expanded .expand-icon {
    transform: rotate(180deg);
}

.operation-levels {
    padding: 0;
    background: var(--bg-primary);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal) ease-out, padding var(--transition-normal) ease-out;
}

.operation-header.expanded + .operation-levels {
    max-height: 1000px;
    padding: var(--space-4);
}

/* FIXED: Level option contrast issues */
.level-option {
    display: flex;
    align-items: center;
    padding: var(--space-3);
    margin-bottom: var(--space-2);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: 2px solid transparent;
    background: var(--bg-primary);
}

/* FIXED: Level option hover with proper contrast */
.level-option:hover {
    background: var(--gray-100); /* FIXED: Light background */
    border-color: var(--gray-300); /* FIXED: Darker border */
    transform: translateX(4px);
}

.level-option.selected {
    background: var(--primary-50);
    border-color: var(--primary-200);
    transform: translateX(4px);
    box-shadow: var(--shadow-sm);
}

.level-option.selected:hover {
    background: var(--primary-100);
    border-color: var(--primary-300);
}

/* Custom checkbox styling */
.level-option input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-400);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    cursor: pointer;
    position: relative;
    margin-right: var(--space-3);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.level-option input[type="checkbox"]:hover {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.level-option input[type="checkbox"]:checked {
    background: var(--primary-500);
    border-color: var(--primary-500);
    transform: scale(1.1);
}

.level-option input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 14px;
    font-variation-settings: 'wght' 700;
}

/* FIXED: Level option labels with proper contrast */
.level-option label {
    flex: 1;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-primary); /* FIXED: Always dark text for readability */
    font-variation-settings: 'wght' 500;
    transition: all var(--transition-fast);
}

.level-option:hover label {
    color: var(--gray-900); /* FIXED: Keep text dark on hover */
}

.level-option.selected label {
    color: var(--primary-800); /* FIXED: Dark purple for better contrast */
    font-variation-settings: 'wght' 600;
}

.level-option.selected:hover label {
    color: var(--primary-900); /* FIXED: Even darker on hover */
}

/* Counter styling in headers */
.operation-header h4::after {
    content: attr(data-count);
    display: inline-block;
    margin-left: var(--space-2);
    padding: var(--space-1) var(--space-2);
    background: var(--gray-200);
    color: var(--gray-800);
    font-size: 0.75rem;
    border-radius: var(--radius-full);
    font-variation-settings: 'wght' 600;
}

.operation-header.has-selections h4::after {
    background: var(--primary-500);
    color: white;
}

/* Menu Actions */
.menu-actions {
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--gray-200);
    display: flex;
    gap: var(--space-4);
    justify-content: center;
}

.action-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-6);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-variation-settings: 'wght' 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    min-width: 160px;
}

.action-button.primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: var(--text-inverse);
    box-shadow: var(--shadow-md);
}

.action-button.primary:hover {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* FIXED: Secondary button (View Scores) with proper contrast */
.action-button.secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 2px solid var(--gray-300); /* Darker border */
}

.action-button.secondary:hover {
    background: var(--gray-100);
    border-color: var(--primary-500); /* More visible border */
    color: var(--primary-700); /* Dark primary color instead of light */
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.action-button.secondary:active {
    background: var(--gray-200); /* Darker on active */
    transform: translateY(0);
}

/* Modal Overlays */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

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

.modal-panel {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(20px) scale(0.95);
    transition: all var(--transition-normal) var(--ease-out);
}

.modal-overlay.active .modal-panel {
    transform: translateY(0) scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6);
    border-bottom: 1px solid var(--gray-200);
    background: var(--bg-secondary);
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.modal-header h2 {
    color: var(--text-primary);
    margin: 0;
    font-variation-settings: 'wght' 600;
}

.modal-content {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

/* Player Section */
.player-section {
    display: flex;
    align-items: end;
    gap: var(--space-3);
}

.player-input-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.player-input-group label {
    font-size: 0.875rem;
    font-variation-settings: 'wght' 500;
    color: var(--text-primary); /* FIXED: Darker color */
}

.player-input-group input {
    padding: var(--space-3) var(--space-4);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    outline: none;
    transition: all var(--transition-fast);
}

.player-input-group input:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.save-name-button {
    padding: var(--space-4) var(--space-5);
    border: none;
    border-radius: var(--radius-lg);
    background: var(--primary-500);
    color: var(--text-inverse);
    font-variation-settings: 'wght' 600; /* Bolder text */
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.save-name-button:hover {
    background: var(--primary-600);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

/* Duration Tabs */
.duration-tabs {
    display: flex;
    border-radius: var(--radius-lg);
    background: var(--gray-100);
    padding: var(--space-1);
}

.tab-button {
    flex: 1;
    padding: var(--space-3);
    border: none;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--primary-600);
    font-size: 0.875rem;
    font-variation-settings: 'wght' 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab-button:hover {
    background: var(--gray-200); /* Darker hover background */
    color: var(--primary-600);
}

.tab-button.active {
    background: var(--bg-primary);
    color: var(--primary-600);
    box-shadow: var(--shadow-sm);
    font-variation-settings: 'wght' 600;
}

/* Scores Container */
.scores-container {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
}

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

.score-entry {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    border-bottom: 1px solid var(--gray-100);
    transition: background var(--transition-fast);
}

.score-entry:last-child {
    border-bottom: none;
}

.score-entry:hover {
    cursor: pointer;
}

.score-entry.empty {
    justify-content: center;
    color: var(--text-tertiary);
    font-style: italic;
    padding: var(--space-8);
    text-align: center;
}

.score-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.score-rank {
    font-size: 1.125rem;
    margin-right: var(--space-2);
}

.score-name {
    font-variation-settings: 'wght' 600;
    color: var(--text-primary);
}

.score-stats {
    font-size: 0.875rem;
    color: var(--text-primary); /* FIXED: Darker color for better readability */
}

.score-operations {
    font-size: 0.75rem;
    color: var(--primary-600);
    font-variation-settings: 'wght' 600;
    background: var(--primary-50);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    display: inline-block;
    margin-top: var(--space-1);
}

.score-date {
    font-size: 0.75rem;
    color: var(--text-secondary); /* This can stay lighter as it's less important */
}

.delete-score {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.delete-score:hover {
    background: var(--error-50);
    color: var(--error-600);
}

/* Clear Scores Button */
.clear-scores-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    border: 2px solid var(--error-300); /* Darker border */
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
    color: var(--error-700); /* Darker red for better contrast */
    font-size: 0.875rem;
    font-variation-settings: 'wght' 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.clear-scores-button:hover {
    background: var(--error-50);
    border-color: var(--error-400);
    color: var(--error-800); /* Even darker on hover */
}

/* Session Complete Modal */
.session-complete-modal {
    text-align: center;
}

.completion-header {
    padding: var(--space-8) var(--space-6) var(--space-6);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
}

.completion-header h2 {
    color: var(--text-primary);
    margin: 0;
}

.completion-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--success-100), var(--success-200));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--success-600);
    animation: success-bounce 0.6s var(--ease-bounce);
}

@keyframes success-bounce {
    0% { transform: scale(0); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.completion-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
    margin: var(--space-6) 0;

    padding: 0 var(--space-6) 0;
}

.stat-card {
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    background: var(--gray-50);
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-variation-settings: 'wght' 700;
    color: var(--primary-600);
    line-height: 1;
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    font-variation-settings: 'wght' 500;
    color:  var(--primary-600);
    margin-top: var(--space-1);
}

.completion-stats .stat-card {
    background: var(--gray-100); /* Slightly darker background */
    border: 1px solid var(--gray-200); /* Add subtle border */
}

.completion-stats .stat-value {
    color: var(--primary-700); /* Darker primary color */
}

.completion-stats .stat-label {
    color:  var(--primary-600);
    font-variation-settings: 'wght' 600; /* Bolder */
}

.completion-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-6);
    border-top: 1px solid var(--gray-200);
}

/* Pause Modal */
.pause-modal {
    text-align: center;
}

.pause-modal h2 {
    color: var(--text-primary);
    margin: 0 0 var(--space-4) 0;
}

.pause-icon {
    margin: 0 auto var(--space-6);
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--warning-100), var(--warning-200));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--warning-600);
}

.pause-actions {
    display: flex;
    flex-direction: row;
    gap: var(--space-3);
    margin-top: var(--space-6);
    justify-content: center;
}

.pause-actions .action-button {
    min-width: 140px;
}

/* Inline feedback styles */
.inline-feedback {
    opacity: 0;
    transform: scale(0.5);
    transition: all var(--transition-fast);
    background: var(--bg-primary);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg);
    border: 2px solid;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.inline-feedback.active {
    opacity: 1;
    transform: scale(1);
}

.inline-feedback.correct {
    border-color: var(--success-500);
    background: var(--success-50);
}

.inline-feedback.incorrect {
    border-color: var(--error-500);
    background: var(--error-50);
}

.inline-feedback .feedback-icon {
    font-size: 1.5rem;
    font-variation-settings: 'wght' 700;
}

.inline-feedback.correct .feedback-icon {
    color: var(--success-600);
}

.inline-feedback.incorrect .feedback-icon {
    color: var(--error-600);
}

/* Disabled state for inputs when session ends */
.answer-input:disabled,
.submit-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
    background: var(--gray-100);
}

/* Animations */
.slide-up-enter {
    animation: slideUpEnter var(--transition-normal) var(--ease-out);
}

@keyframes slideUpEnter {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-up-exit {
    animation: slideUpExit var(--transition-normal) var(--ease-in);
}

@keyframes slideUpExit {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-30px);
    }
}

.shake-wrong {
    animation: shakeWrong 0.6s var(--ease-out);
}

@keyframes shakeWrong {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
    20%, 40%, 60%, 80% { transform: translateX(4px); }
}

.flash-wrong {
    animation: flashWrong 1s var(--ease-out);
}

@keyframes flashWrong {
    0% { background-color: transparent; }
    10% { background-color: rgba(239, 68, 68, 0.1); }
    100% { background-color: transparent; }
}

/* Animation for selection changes */
.level-option.selected {
    animation: selectLevel 0.3s ease-out;
}

@keyframes selectLevel {
    0% {
        transform: translateX(0) scale(1);
        background: var(--bg-primary);
    }
    50% {
        transform: translateX(8px) scale(1.02);
        background: var(--primary-100);
    }
    100% {
        transform: translateX(4px) scale(1);
        background: var(--primary-50);
    }
}

/* FIXED: Responsive design for wider menu */
@media (max-width: 1000px) {
    .menu-panel {
        min-width: 500px;
        max-width: 700px;
    }
    
    .operations-grid {
        grid-template-columns: 1fr; /* Stack vertically on smaller screens */
        gap: var(--space-4);
    }
}

@media (max-width: 768px) {
    .nav-content {
        padding: 0 var(--space-4);
    }
    
    .main-content {
        padding: var(--space-6) var(--space-4);
    }
    
    .content-wrapper {
        gap: var(--space-6);
    }
    
    .status-cards {
        grid-template-columns: 1fr;
    }
    
    .math-expression {
        font-size: 2.5rem;
    }
    
    .answer-input {
        font-size: 1.25rem;
        max-width: 160px;
    }
    
    .completion-stats {
        grid-template-columns: 1fr;
    }
    
    .completion-actions {
        flex-direction: column;
    }
    
    .pause-actions {
        flex-direction: column;
    }
    
    .menu-panel {
        min-width: 0;
        max-width: none;
        width: 95%;
        margin: var(--space-2);
    }
    
    .menu-actions {
        flex-direction: column;
        gap: var(--space-3);
    }
    
    .action-button {
        min-width: 0;
        width: 100%;
    }
    
    .timer-selector {
        flex-direction: column;
    }
    
    .duration-button {
        width: 100%;
    }
    
    .operation-header {
        padding: var(--space-3);
    }
    
    .operation-levels {
        padding: var(--space-3);
    }
    
    .operation-header.expanded + .operation-levels {
        padding: var(--space-3);
    }
    
    .level-option {
        padding: var(--space-2);
        margin-bottom: var(--space-1);
    }
    
    .level-option label {
        font-size: 0.8125rem;
    }
    
    .level-option input[type="checkbox"] {
        width: 18px;
        height: 18px;
    }
    
    .inline-feedback {
        width: 40px;
        height: 40px;
        top: 12px;
        right: 12px;
    }
    
    .inline-feedback .feedback-icon {
        font-size: 1.25rem;
    }
}

@media (max-width: 480px) {
    .app-title h1 {
        font-size: 1.5rem;
    }
    
    .math-expression {
        font-size: 2rem;
    }
    
    .answer-input {
        font-size: 1.125rem;
        max-width: 140px;
    }
    
    .status-card {
        padding: var(--space-4);
    }
    
    .card-value {
        font-size: 1.5rem;
    }
    
    .modal-panel {
        margin: var(--space-2);
    }
    
    .menu-panel {
        margin: var(--space-1);
        width: 98%;
    }
}

/* Focus States for Accessibility */
.nav-button:focus-visible,
.submit-button:focus-visible,
.duration-button:focus-visible,
.tab-button:focus-visible,
.close-button:focus-visible,
.action-button:focus-visible {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

.operation-header:focus-visible {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

.level-option:focus-within {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
    border-radius: var(--radius-md);
}

.answer-input:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .floating-shape {
        animation: none;
    }
    
    .indicator-dot {
        animation: none;
    }
    
    .accuracy-fill::after {
        animation: none;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #0f172a;
        --bg-secondary: #1e293b;
        --bg-tertiary: #334155;
        --text-primary: #f8fafc;
        --text-secondary: #cbd5e1;
        --text-tertiary: #94a3b8;
        --glass-bg: rgba(30, 41, 59, 0.8);
        --glass-border: rgba(148, 163, 184, 0.2);
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.2);
    }
    
    .status-card,
    .problem-card,
    .modal-panel {
        border: 2px solid var(--text-primary);
    }
}

/* Print styles */
@media print {
    .animated-background,
    .main-nav,
    .menu-overlay,
    .modal-overlay,
    .feedback-overlay {
        display: none !important;
    }
    
    .main-content {
        padding: 0;
    }
    
    .problem-card {
        box-shadow: none;
        border: 2px solid #000;
    }
}

/* Add these styles to your existing styles.css file */

/* Remove the old navigation styles and add these new ones */

/* App Title Overlay */
.app-title-overlay {
    position: fixed;
    top: var(--space-6);
    left: 24px;
    z-index: 50;
    text-align: left;
    pointer-events: none;
}

.app-title-overlay h1 {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
    font-size: 2rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.app-title-overlay .title-accent {
    margin: var(--space-2) auto 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
    border-radius: var(--radius-full);
    opacity: 0.6;
}

/* Floating Action Buttons */
.floating-buttons {
    position: fixed;
    top: var(--space-6);
    right: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    z-index: 100;
}

.fab-button {
    width: 56px;
    height: 56px;
    border: none;
    border-radius: var(--radius-full);
    color: var(--text-inverse);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.fab-button:hover {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.fab-button:active {
    transform: translateY(0);
}

.fab-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s;
}

.fab-button:active::before {
    width: 120px;
    height: 120px;
}

/* Menu FAB specific styles */
.menu-fab {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
}

.menu-fab:hover {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.menu-fab.active {
    background: linear-gradient(135deg, var(--gray-600), var(--gray-700));
    transform: rotate(180deg);
}

.menu-fab.active .menu-icon path {
    d: path("M18 6L6 18M6 6l12 12");
}

/* Pause FAB specific styles */
.pause-fab {
    background: linear-gradient(135deg, var(--warning-500), var(--warning-600));
}

.pause-fab:hover {
    background: linear-gradient(135deg, var(--warning-600), var(--warning-700));
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.pause-fab.visible {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

/* Main content adjustments */
.main-content {
    padding-top: var(--space-16); /* Add space for title */
}

/* Responsive adjustments for floating buttons */
@media (max-width: 768px) {
    .floating-buttons {
        top: var(--space-4);
        right: var(--space-4);
        gap: var(--space-2);
    }
    
    .fab-button {
        width: 48px;
        height: 48px;
    }
    
    .app-title-overlay {
        top: var(--space-4);
    }
    
    .app-title-overlay h1 {
        font-size: 1.5rem;
    }
    
    .main-content {
        padding-top: var(--space-12);
    }
}

@media (max-width: 480px) {
    .floating-buttons {
        top: var(--space-3);
        right: var(--space-3);
    }
    
    .fab-button {
        width: 44px;
        height: 44px;
    }
    
    .app-title-overlay h1 {
        font-size: 1.25rem;
    }
}

/* Focus states for accessibility */
.fab-button:focus-visible {
    outline: 2px solid var(--primary-300);
    outline-offset: 2px;
}

/* Logo styling */
.logo-container {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.logo-symbol {
    font-size: 2.5rem;
    font-variation-settings: 'wght' 300;
    background: linear-gradient(135deg, var(--primary-400), var(--primary-600));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    transform: rotate(-5deg);
    animation: float-symbol 6s ease-in-out infinite;
}

@keyframes float-symbol {
    0%, 100% { transform: rotate(-5deg) translateY(0); }
    50% { transform: rotate(-5deg) translateY(-3px); }
}

/* Fixed menu footer */
.menu-panel {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.menu-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-6);
    padding-bottom: 0;
}

.menu-footer {
    position: sticky;
    bottom: 0;
    background: var(--bg-primary);
    border-top: 1px solid var(--gray-200);
    padding: var(--space-6);
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
    box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.05);
}

/* Disabled button state */
.action-button.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.action-button.primary.disabled {
    background: var(--gray-400);
}

/* Pause button visibility */
.pause-fab {
    opacity: 0;
    visibility: hidden;
    transform: scale(0);
    transition: all var(--transition-normal);
}

.pause-fab.visible {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

/* Session history styles */
.history-container {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
}

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

.history-entry {
    padding: var(--space-4);
    border-bottom: 1px solid var(--gray-100);
    transition: background var(--transition-fast);
}

.history-entry:last-child {
    border-bottom: none;
}

.history-entry:hover {
    background: var(--gray-50);
}

.history-entry.empty {
    justify-content: center;
    color: var(--text-tertiary);
    font-style: italic;
    padding: var(--space-8);
    text-align: center;
}

.history-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-2);
}

.history-date {
    font-variation-settings: 'wght' 500;
    color: var(--text-primary);
}

.history-stats {
    font-variation-settings: 'wght' 600;
    color: var(--primary-600);
}

.history-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.history-operations {
    font-size: 0.875rem;
    color: var(--primary-600);
    font-variation-settings: 'wght' 600;
}

.history-levels {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.history-tab-button {
    flex: 1;
    padding: var(--space-3);
    border: none;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--primary-600);
    font-size: 0.875rem;
    font-variation-settings: 'wght' 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.history-tab-button:hover {
    background: var(--gray-200);
    color: var(--primary-600);
}

.history-tab-button.active {
    background: var(--bg-primary);
    color: var(--primary-600);
    box-shadow: var(--shadow-sm);
    font-variation-settings: 'wght' 600;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .menu-footer {
        flex-direction: column;
        gap: var(--space-3);
    }
    
    .action-button {
        width: 100%;
    }
    
    .logo-symbol {
        font-size: 2rem;
    }
}