/* Modern Professional CSS Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* CSS Custom Properties for Design System */
:root {
    /* Primary Colors */
    --primary-blue: #0052ff;
    --primary-blue-dark: #0041cc;
    --primary-blue-light: #1a73ff;
    
    /* Secondary Colors */
    --secondary-purple: #6366f1;
    --secondary-teal: #06b6d4;
    --secondary-green: #10b981;
    --secondary-orange: #f59e0b;
    
    /* Neutral Colors */
    --neutral-900: #0f172a;
    --neutral-800: #1e293b;
    --neutral-700: #334155;
    --neutral-600: #475569;
    --neutral-500: #64748b;
    --neutral-400: #94a3b8;
    --neutral-300: #cbd5e1;
    --neutral-200: #e2e8f0;
    --neutral-100: #f1f5f9;
    --neutral-50: #f8fafc;
    --white: #ffffff;
    
    /* Status Colors */
    --success: #10b981;
    --success-light: #d1fae5;
    --error: #ef4444;
    --error-light: #fee2e2;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Space Grotesk', 'Inter', sans-serif;
    
    /* Font Sizes */
    --text-xs: 0.75rem;    /* 12px */
    --text-sm: 0.875rem;   /* 14px */
    --text-base: 1rem;     /* 16px */
    --text-lg: 1.125rem;   /* 18px */
    --text-xl: 1.25rem;    /* 20px */
    --text-2xl: 1.5rem;    /* 24px */
    --text-3xl: 1.875rem;  /* 30px */
    --text-4xl: 2.25rem;   /* 36px */
    --text-5xl: 3rem;      /* 48px */
    --text-6xl: 3.75rem;   /* 60px */
    
    /* Spacing */
    --space-1: 0.25rem;    /* 4px */
    --space-2: 0.5rem;     /* 8px */
    --space-3: 0.75rem;    /* 12px */
    --space-4: 1rem;       /* 16px */
    --space-5: 1.25rem;    /* 20px */
    --space-6: 1.5rem;     /* 24px */
    --space-8: 2rem;       /* 32px */
    --space-10: 2.5rem;    /* 40px */
    --space-12: 3rem;      /* 48px */
    --space-16: 4rem;      /* 64px */
    --space-20: 5rem;      /* 80px */
    --space-24: 6rem;      /* 96px */
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    /* Border Radius */
    --radius-sm: 0.375rem;  /* 6px */
    --radius-md: 0.5rem;    /* 8px */
    --radius-lg: 0.75rem;   /* 12px */
    --radius-xl: 1rem;      /* 16px */
    --radius-2xl: 1.5rem;   /* 24px */
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;
}

/* Dark Theme Variables */
[data-theme="dark"] {
    /* Keep the existing dark blue aesthetic but make it more comprehensive */
    --neutral-900: #ffffff;
    --neutral-800: #f1f5f9;
    --neutral-700: #e2e8f0;
    --neutral-600: #cbd5e1;
    --neutral-500: #94a3b8;
    --neutral-400: #64748b;
    --neutral-300: #475569;
    --neutral-200: #334155;
    --neutral-100: #1e293b;
    --neutral-50: #0f172a;
    --white: #0f172a;
    
    /* Enhanced dark theme colors for better coverage */
    --success-light: #065f46;
    --error-light: #7f1d1d;
    --warning-light: #78350f;
}

/* Base Styles */
html {
    font-size: 16px;
    scroll-behavior: smooth;
    transition: background-color var(--transition-normal);
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--neutral-800);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: all var(--transition-normal);
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--neutral-900);
    margin-bottom: var(--space-4);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
    margin-bottom: var(--space-4);
    color: var(--neutral-600);
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

/* Button System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

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

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-blue-dark), var(--primary-blue));
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--primary-blue);
    border-color: var(--primary-blue);
}

.btn-outline:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-large {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
}

.btn-small {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
}

.btn-full {
    width: 100%;
}

.btn-icon {
    padding: var(--space-2);
    border-radius: var(--radius-md);
    background: var(--neutral-100);
    color: var(--neutral-600);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background: var(--neutral-200);
    color: var(--neutral-800);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--neutral-200);
    z-index: var(--z-fixed);
    transition: all var(--transition-normal);
}

/* Dark mode navbar - Use proper dark blue background */
[data-theme="dark"] .navbar {
    background: rgba(15, 23, 42, 0.95);
    border-bottom: 1px solid #334155;
    backdrop-filter: blur(20px);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--neutral-900);
    text-decoration: none;
}

.logo i {
    font-size: var(--text-2xl);
    color: var(--primary-blue);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--space-8);
    margin: 0;
}

.nav-link {
    font-weight: 500;
    color: var(--neutral-700);
    text-decoration: none;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-blue);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: width var(--transition-fast);
}

.nav-link:hover::after {
    width: 100%;
}

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

.theme-toggle {
    background: none;
    border: none;
    padding: var(--space-2);
    border-radius: var(--radius-lg);
    cursor: pointer;
    color: var(--neutral-600);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.theme-toggle:hover {
    background: var(--neutral-100);
    color: var(--primary-blue);
    transform: scale(1.05);
}

.theme-toggle i {
    font-size: var(--text-lg);
    transition: transform var(--transition-fast);
}

.theme-toggle:hover i {
    transform: rotate(15deg);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.bar {
    width: 24px;
    height: 2px;
    background: var(--neutral-700);
    transition: all var(--transition-fast);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, var(--neutral-50) 0%, var(--white) 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.6;
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(51, 65, 85, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(51, 65, 85, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s ease-in-out infinite;
}

@keyframes gridMove {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(25px, 25px); }
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.floating-element {
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    opacity: 0.1;
    animation: float 15s ease-in-out infinite;
    animation-delay: var(--delay);
}

.floating-element:nth-child(1) {
    top: 10%;
    left: 10%;
    width: 100px;
    height: 100px;
}

.floating-element:nth-child(2) {
    top: 20%;
    right: 15%;
    width: 150px;
    height: 150px;
}

.floating-element:nth-child(3) {
    bottom: 30%;
    left: 20%;
    width: 80px;
    height: 80px;
}

.floating-element:nth-child(4) {
    bottom: 10%;
    right: 10%;
    width: 120px;
    height: 120px;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(120deg); }
    66% { transform: translateY(-10px) rotate(240deg); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
    position: relative;
    z-index: 1;
    padding: var(--space-20) 0;
}

.hero-text {
    max-width: 600px;
}

.hero-title {
    font-size: var(--text-6xl);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-6);
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--neutral-600);
    margin-bottom: var(--space-8);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
}

.hero-stats {
    display: flex;
    gap: var(--space-8);
}

.stat {
    text-align: left;
}

.stat-number {
    display: block;
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--neutral-900);
    line-height: 1;
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--neutral-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Dashboard Preview */
.hero-visual {
    position: relative;
}

.dashboard-preview {
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg) rotateX(10deg);
    transition: transform var(--transition-slow);
}

.dashboard-preview:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    background: var(--neutral-50);
    border-bottom: 1px solid var(--neutral-200);
}

.preview-controls {
    display: flex;
    gap: var(--space-2);
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.control.red { background: #ff5f57; }
.control.yellow { background: #ffbd2e; }
.control.green { background: #28ca42; }

.preview-title {
    font-weight: 600;
    color: var(--neutral-800);
}

.preview-content {
    padding: var(--space-6);
}

.chart-container {
    margin-bottom: var(--space-6);
    background: var(--neutral-50);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    max-width: 400px;
    max-height: 200px;
    overflow: hidden;
}

.chart-container canvas {
    max-width: 100% !important;
    max-height: 100% !important;
    width: 400px !important;
    height: 200px !important;
}

.trading-panel {
    background: var(--neutral-50);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
}

.price-ticker {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.ticker-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3);
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.symbol {
    font-weight: 600;
    color: var(--neutral-800);
}

.price {
    font-weight: 600;
}

.change {
    font-size: var(--text-xs);
    font-weight: 600;
    padding: 2px var(--space-2);
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-variant-numeric: tabular-nums;
    transition: all var(--transition-fast);
}

.positive {
    color: #047857;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.positive:hover {
    background: rgba(16, 185, 129, 0.15);
    transform: translateY(-1px);
}

.negative {
    color: #dc2626;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.negative:hover {
    background: rgba(239, 68, 68, 0.15);
    transform: translateY(-1px);
}

/* Section Styles */
section {
    padding: var(--space-20) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--neutral-600);
    margin-bottom: 0;
}

/* Features Section */
.features {
    background: var(--neutral-50);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-8);
}

.feature-card {
    background: var(--white);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--neutral-200);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-blue);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-6);
}

.feature-icon i {
    font-size: var(--text-2xl);
    color: var(--white);
}

.feature-title {
    color: var(--neutral-900);
    margin-bottom: var(--space-4);
}

.feature-description {
    color: var(--neutral-600);
    margin-bottom: var(--space-4);
    line-height: 1.7;
}

.feature-list {
    list-style: none;
    margin: 0;
}

.feature-list li {
    padding: var(--space-2) 0;
    color: var(--neutral-600);
    position: relative;
    padding-left: var(--space-6);
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 600;
}

/* Trading Section */
.trading-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.trading-features {
    margin-bottom: var(--space-8);
}

.trading-feature {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.feature-icon-small {
    width: 40px;
    height: 40px;
    background: var(--primary-blue);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon-small i {
    color: var(--white);
    font-size: var(--text-lg);
}

.feature-content h4 {
    margin-bottom: var(--space-2);
    color: var(--neutral-900);
}

.feature-content p {
    color: var(--neutral-600);
    margin: 0;
}

/* Trading Terminal */
.trading-terminal {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.terminal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4);
    background: var(--neutral-800);
    color: var(--white);
}

.terminal-tabs {
    display: flex;
    gap: var(--space-4);
}

.tab {
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab.active {
    background: var(--primary-blue);
}

.terminal-controls {
    display: flex;
    gap: var(--space-3);
}

.terminal-controls i {
    cursor: pointer;
    transition: color var(--transition-fast);
}

.terminal-controls i:hover {
    color: var(--primary-blue);
}

.terminal-content {
    padding: var(--space-6);
}

.price-display {
    margin-bottom: var(--space-6);
    padding: var(--space-4);
    background: var(--neutral-50);
    border-radius: var(--radius-lg);
}

.current-price {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-2);
}

.price-value {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--neutral-900);
}

.price-change {
    font-size: var(--text-lg);
    font-weight: 600;
}

.price-details {
    display: flex;
    gap: var(--space-6);
    font-size: var(--text-sm);
    color: var(--neutral-500);
}

.chart-placeholder {
    margin-bottom: var(--space-6);
    background: var(--neutral-50);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.order-book-preview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.order-column h5 {
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--neutral-500);
    margin-bottom: var(--space-3);
}

.order-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-1) 0;
    font-size: var(--text-sm);
    color: var(--neutral-600);
}

/* Portfolio Section */
.portfolio {
    background: var(--neutral-900) !important;
    color: var(--white) !important;
    padding: var(--space-12) 0;
}

/* Portfolio section should ALWAYS remain in default dark colors regardless of theme */
.portfolio,
[data-theme="dark"] .portfolio,
[data-theme="light"] .portfolio {
    background: #0f172a !important;
    color: #ffffff !important;
}

.portfolio .section-title {
    color: var(--white);
    text-align: center;
    margin-bottom: var(--space-4);
}

.portfolio .section-subtitle {
    color: var(--neutral-300);
    text-align: center;
    margin-bottom: var(--space-10);
}

.portfolio-demo {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: var(--space-8);
    align-items: stretch;
    min-height: 500px;
}

.portfolio-sidebar {
    background: var(--neutral-800);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    border: 1px solid var(--neutral-700);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.portfolio-summary h3 {
    color: var(--neutral-300);
    font-size: var(--text-base);
    margin-bottom: var(--space-3);
    font-weight: 500;
}

.portfolio-value {
    margin-bottom: var(--space-6);
}

.portfolio-value .value {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--white);
    display: block;
    margin-bottom: var(--space-2);
}

.portfolio-value .change {
    font-size: var(--text-sm);
    font-weight: 500;
}

.asset-allocation h4 {
    color: var(--neutral-300);
    font-size: var(--text-base);
    margin-bottom: var(--space-4);
    font-weight: 500;
}

.allocation-legend {
    margin-top: var(--space-4);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
    font-size: var(--text-sm);
    color: var(--neutral-300);
}

.color-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.portfolio-main {
    background: var(--neutral-800);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    border: 1px solid var(--neutral-700);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.portfolio-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-6);
    border-bottom: 1px solid var(--neutral-700);
    padding-bottom: var(--space-4);
}

.portfolio-header h4 {
    color: var(--white);
    margin: 0;
    font-size: var(--text-xl);
    font-weight: 600;
}

.portfolio-controls {
    display: flex;
    gap: var(--space-3);
    align-items: center;
}

.control-select {
    background: var(--neutral-700);
    border: 1px solid var(--neutral-600);
    color: var(--white);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
}

.holdings-table {
    background: var(--neutral-900);
    border-radius: var(--radius-lg);
    overflow: hidden;
    flex: 1;
    min-height: 0;
}

.table-header {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr 0.8fr;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--neutral-800);
    border-bottom: 1px solid var(--neutral-700);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--neutral-300);
}

.table-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr 0.8fr;
    gap: var(--space-4);
    padding: var(--space-4);
    border-bottom: 1px solid var(--neutral-800);
    align-items: center;
    transition: background-color var(--transition-fast);
}

.table-row:hover {
    background: var(--neutral-800);
}

.table-row:last-child {
    border-bottom: none;
}

.asset-info {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.asset-icon {
    width: 32px;
    height: 32px;
    background: var(--primary-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--white);
}

.asset-details {
    display: flex;
    flex-direction: column;
}

.asset-name {
    color: var(--white);
    font-weight: 600;
    font-size: var(--text-sm);
}

.asset-symbol {
    color: var(--neutral-400);
    font-size: var(--text-xs);
    margin-top: 2px;
}

.holdings, .price, .value {
    color: var(--white);
    font-variant-numeric: tabular-nums;
    font-size: var(--text-sm);
}

.change {
    font-variant-numeric: tabular-nums;
    font-size: var(--text-sm);
    font-weight: 500;
}

.actions {
    display: flex;
    gap: var(--space-1);
}

.btn-icon {
    width: 28px;
    height: 28px;
    border: none;
    background: none;
    color: var(--neutral-400);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background: var(--primary-blue);
    color: var(--white);
}

@media (max-width: 1024px) {
    .portfolio-demo {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .table-header, .table-row {
        grid-template-columns: 2fr 1fr 1fr 1fr 1fr 0.6fr;
        gap: var(--space-2);
        padding: var(--space-3);
        font-size: var(--text-xs);
    }
}

.asset-list {
    list-style: none;
    margin: 0;
}

.asset-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--neutral-700);
}

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

.asset-info {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.asset-icon {
    width: 32px;
    height: 32px;
    background: var(--primary-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--white);
}

.asset-name {
    color: var(--white);
    font-weight: 600;
}

.asset-symbol {
    color: var(--neutral-400);
    font-size: var(--text-sm);
}

.asset-amount {
    text-align: right;
}

.asset-value {
    color: var(--white);
    font-weight: 600;
}

.asset-change {
    font-size: var(--text-xs);
    font-weight: 600;
    padding: 2px var(--space-2);
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-variant-numeric: tabular-nums;
    transition: all var(--transition-fast);
}

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

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

/* Analytics Section */
.analytics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-areas: 
        "market market"
        "gainers insights";
    gap: var(--space-8);
}

.analytics-card {
    background: var(--white);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--neutral-200);
    transition: all var(--transition-normal);
}

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

.analytics-card.large {
    grid-area: market;
}

.analytics-card:nth-child(2) {
    grid-area: gainers;
}

.analytics-card:nth-child(3) {
    grid-area: insights;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--neutral-200);
}

.card-header h3 {
    margin: 0;
    color: var(--neutral-900);
    font-size: var(--text-lg);
    font-weight: 600;
}

.card-controls {
    display: flex;
    gap: var(--space-2);
}

.control-select {
    padding: var(--space-1) var(--space-2);
    border: 1px solid var(--neutral-300);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    background: var(--white);
    color: var(--neutral-700);
}

.market-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

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

.metric-label {
    font-size: var(--text-sm);
    color: var(--neutral-500);
    font-weight: 500;
}

.metric-value {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--neutral-900);
}

.market-chart {
    width: 100%;
    height: 250px;
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: var(--neutral-50);
    position: relative;
}

.market-chart canvas {
    width: 100% !important;
    height: 100% !important;
    max-width: 100%;
    max-height: 100%;
    display: block;
}

.gainers-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    max-height: 400px;
    overflow-y: auto;
}

.gainer-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3);
    background: var(--neutral-50);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    border: 1px solid var(--neutral-200);
}

.gainer-item:hover {
    background: var(--neutral-100);
    transform: translateX(4px);
}

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

.gainer-info .symbol {
    font-weight: 700;
    font-size: var(--text-sm);
    color: var(--neutral-900);
}

.gainer-info .name {
    font-size: var(--text-xs);
    color: var(--neutral-500);
    font-weight: 500;
}

.gainer-metrics {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--space-1);
}

.gainer-metrics .price {
    font-weight: 600;
    font-size: var(--text-sm);
    color: var(--neutral-900);
}

.analytics-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
}

.analytics-title {
    color: var(--neutral-900);
    margin: 0;
}

.analytics-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.analytics-value {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: var(--space-2);
}

.analytics-change {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 600;
}

.analytics-subtitle {
    color: var(--neutral-500);
    font-size: var(--text-sm);
    margin: 0;
}

/* Contact Section - Modern Professional Styling */
.contact {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: var(--space-20) 0;
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" patternUnits="userSpaceOnUse" width="100" height="100"><circle cx="50" cy="50" r="1" fill="%23000" opacity="0.02"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: start;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.contact-info {
    padding: var(--space-8);
}

.contact .section-title {
    font-size: var(--text-5xl);
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: var(--space-6);
    line-height: 1.1;
}

.contact .section-subtitle {
    font-size: var(--text-xl);
    color: var(--neutral-600);
    margin-bottom: var(--space-10);
    line-height: 1.6;
}

.contact-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    margin-bottom: var(--space-10);
}

.contact-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-4);
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.contact-feature:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.95);
}

.contact-feature i {
    font-size: var(--text-2xl);
    color: var(--primary-blue);
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-top: 2px;
    flex-shrink: 0;
}

.contact-feature h4 {
    color: var(--neutral-900);
    margin-bottom: var(--space-2);
    font-size: var(--text-lg);
    font-weight: 600;
}

.contact-feature p {
    color: var(--neutral-600);
    margin: 0;
    font-size: var(--text-base);
    line-height: 1.5;
}

.contact-actions {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.contact-form-container {
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-2xl);
    padding: var(--space-2);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.contact-form {
    background: var(--white);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--neutral-200);
}

.contact-form h3 {
    color: var(--neutral-900);
    margin-bottom: var(--space-6);
    font-size: var(--text-2xl);
    font-weight: 700;
    text-align: center;
}

.form-group {
    margin-bottom: var(--space-6);
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: var(--space-2);
    color: var(--neutral-700);
    font-weight: 600;
    font-size: var(--text-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-4);
    border: 2px solid var(--neutral-200);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    transition: all var(--transition-normal);
    background: var(--white);
    color: var(--neutral-900);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 4px rgba(0, 82, 255, 0.1);
    transform: translateY(-1px);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    font-size: var(--text-sm);
    color: var(--neutral-600);
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--neutral-300);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    color: white;
    font-size: 12px;
    font-weight: bold;
}

/* Dark mode contact section */
[data-theme="dark"] .contact {
    background: linear-gradient(135deg, var(--neutral-50) 0%, var(--neutral-100) 100%);
}

[data-theme="dark"] .contact-feature {
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid rgba(51, 65, 85, 0.3);
}

[data-theme="dark"] .contact-feature:hover {
    background: rgba(30, 41, 59, 0.95);
}

[data-theme="dark"] .contact-form-container {
    background: rgba(30, 41, 59, 0.9);
    border: 1px solid rgba(51, 65, 85, 0.3);
}

[data-theme="dark"] .contact-form {
    background: var(--neutral-200);
    border: 1px solid var(--neutral-300);
}

/* Responsive design */
@media (max-width: 1024px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }
    
    .contact-actions {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .contact {
        padding: var(--space-16) 0;
    }
    
    .contact .section-title {
        font-size: var(--text-4xl);
    }
    
    .contact-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .contact-form {
        padding: var(--space-6);
    }
}

/* Footer */
.footer {
    background: var(--neutral-900);
    color: var(--white);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-section h4 {
    color: var(--white);
    margin-bottom: var(--space-4);
}

.footer-links {
    list-style: none;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--space-2);
}

.footer-links a {
    color: var(--neutral-300);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-blue);
}

.social-links {
    display: flex;
    gap: var(--space-4);
    margin-top: var(--space-4);
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--neutral-800);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--primary-blue);
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid var(--neutral-700);
    padding-top: var(--space-6);
    text-align: center;
    color: var(--neutral-400);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.animate-fade-in {
    animation: fadeInUp 0.6s ease-out;
}

.animate-slide-in {
    animation: slideInRight 0.6s ease-out;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--space-12);
        text-align: center;
    }
    
    .trading-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .analytics-grid {
        grid-template-areas: 
            "market"
            "gainers"
            "insights";
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    /* Navigation */
    .nav-list {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: var(--space-6);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .nav-list.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    /* Typography */
    .hero-title {
        font-size: var(--text-4xl);
    }
    
    .section-title {
        font-size: var(--text-3xl);
    }
    
    /* Layout */
    .container {
        padding: 0 var(--space-4);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .analytics-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-preview {
        transform: none;
    }
    
    .form-input,
    .form-textarea {
        font-size: 16px; /* Prevents zoom on iOS */
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: var(--text-3xl);
    }
    
    .container {
        padding: 0 var(--space-3);
    }
    
    section {
        padding: var(--space-12) 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-blue: #0066cc;
        --neutral-900: #000000;
        --neutral-100: #ffffff;
        --neutral-500: #333333;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .navbar {
        background: rgba(15, 23, 42, 0.95);
        border-bottom-color: var(--neutral-700);
    }
    
    .logo,
    .nav-link {
        color: var(--white);
    }
    
    .nav-link:hover {
        color: var(--primary-blue);
    }
}

/* Print styles */
@media print {
    .navbar,
    .hamburger,
    .floating-elements,
    .hero-background {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
        color: #000;
        background: #fff;
    }
    
    .hero {
        min-height: auto;
        padding: 2rem 0;
    }
    
    .section-title {
        font-size: 18pt;
        margin-bottom: 1rem;
    }
    
    .feature-card,
    .analytics-card,
    .portfolio-card {
        break-inside: avoid;
        border: 1px solid #ccc;
        box-shadow: none;
    }
}

/* Focus management for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-blue);
    color: var(--white);
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
}

.skip-link:focus {
    top: 6px;
}

/* Loading states */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.4),
        transparent
    );
    animation: loading 1.5s infinite;
}

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

/* Utility classes */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

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

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

.hidden {
    display: none !important;
}

/* Advanced Features CSS */

/* Export Group Styles */
.export-group {
    display: flex;
    gap: var(--space-2);
    margin-left: auto;
}

.export-group .btn {
    font-size: var(--text-sm);
    padding: var(--space-2) var(--space-3);
}

/* Preference Modal Styles */
.preference-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.preference-modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow: hidden;
    transition: transform var(--transition-normal);
}

.preference-modal.show .modal-content {
    transform: translate(-50%, -50%) scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6);
    border-bottom: 1px solid var(--neutral-200);
}

.modal-header h3 {
    margin: 0;
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--neutral-900);
}

.close-btn {
    background: none;
    border: none;
    padding: var(--space-2);
    cursor: pointer;
    color: var(--neutral-500);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.close-btn:hover {
    background: var(--neutral-100);
    color: var(--neutral-700);
}

.modal-body {
    padding: var(--space-6);
}

.preference-group {
    margin-bottom: var(--space-6);
}

.preference-group label {
    display: block;
    font-weight: 500;
    color: var(--neutral-700);
    margin-bottom: var(--space-2);
}

.preference-group select {
    width: 100%;
    padding: var(--space-3);
    border: 1px solid var(--neutral-300);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    transition: border-color var(--transition-fast);
}

.preference-group select:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 82, 255, 0.1);
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    font-weight: 400 !important;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-blue);
}

/* Loading Spinner */
.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.spinner-ring {
    display: inline-block;
    position: relative;
    width: 40px;
    height: 40px;
}

.spinner-ring div {
    box-sizing: border-box;
    display: block;
    position: absolute;
    width: 32px;
    height: 32px;
    margin: 4px;
    border: 3px solid var(--primary-blue);
    border-radius: 50%;
    animation: spinner-ring 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    border-color: var(--primary-blue) transparent transparent transparent;
}

.spinner-ring div:nth-child(1) { animation-delay: -0.45s; }
.spinner-ring div:nth-child(2) { animation-delay: -0.3s; }
.spinner-ring div:nth-child(3) { animation-delay: -0.15s; }

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

/* Notification System */
.notification-container {
    position: fixed;
    top: var(--space-6);
    right: var(--space-6);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.notification {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    min-width: 300px;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
}

.notification.show {
    transform: translateX(0);
}

.notification-success {
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
    color: white;
}

.notification-error {
    background: linear-gradient(135deg, var(--error) 0%, #dc2626 100%);
    color: white;
}

.notification-warning {
    background: linear-gradient(135deg, var(--warning) 0%, #d97706 100%);
    color: white;
}

.notification-info {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: white;
}

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

.notification-close {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: var(--space-1);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.notification-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Chart Tooltip */
.chart-tooltip {
    position: absolute;
    background: var(--neutral-900);
    color: white;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    pointer-events: none;
    z-index: var(--z-tooltip);
    display: none;
}

.tooltip-time {
    font-weight: 500;
    margin-bottom: var(--space-1);
}

.tooltip-price {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--primary-blue-light);
}

/* Animation Classes */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.stagger-item {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.stagger-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* Enhanced Button Effects */
.btn-primary {
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.btn-primary::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 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

/* Particle Canvas */
.particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    opacity: 0.6;
}

/* Enhanced Card Effects */
.feature-card,
.analytics-card {
    transition: all var(--transition-normal);
    cursor: pointer;
}

.feature-card:hover,
.analytics-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 82, 255, 0.15);
}

/* Loading States */
.data-loading.loading {
    position: relative;
    pointer-events: none;
}

.data-loading.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(2px);
    z-index: 1;
}

/* Responsive Design for New Features */
@media (max-width: 768px) {
    .export-group {
        flex-direction: column;
        width: 100%;
    }
    
    .export-group .btn {
        width: 100%;
        justify-content: center;
    }
    
    .modal-content {
        width: 95%;
        margin: var(--space-4);
    }
    
    .notification-container {
        left: var(--space-4);
        right: var(--space-4);
    }
    
    .notification {
        min-width: auto;
        width: 100%;
    }
}

/* Dark Theme Support for New Components */
[data-theme="dark"] .modal-content {
    background: var(--neutral-100);
    border: 1px solid var(--neutral-200);
}

[data-theme="dark"] .preference-group select {
    background: var(--neutral-50);
    border-color: var(--neutral-200);
    color: var(--neutral-800);
}

[data-theme="dark"] .chart-tooltip {
    background: var(--neutral-100);
    color: var(--neutral-900);
}

[data-theme="dark"] .tooltip-price {
    color: var(--primary-blue);
}

/* Performance Optimizations */
.feature-card,
.analytics-card,
.btn-primary {
    will-change: transform;
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    .animate-on-scroll,
    .stagger-item,
    .feature-card,
    .analytics-card,
    .btn-primary {
        transition: none;
        animation: none;
    }
    
    .particle-canvas {
        display: none;
    }
}

.visible {
    display: block !important;
}

.fade-in {
    opacity: 0;
    animation: fadeInUp 0.6s ease-out forwards;
}

.slide-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out forwards;
}

/* === COMPREHENSIVE DARK THEME IMPROVEMENTS === */
/* Make dark mode total and seamless while preserving existing dark sections */

/* Sections that should ALWAYS remain dark (like portfolio) - no changes needed */
/* Portfolio section already has proper dark styling */

/* Enhance existing dark theme coverage for other sections */
[data-theme="dark"] .hero {
    background: linear-gradient(135deg, var(--neutral-50) 0%, var(--neutral-100) 100%);
}

[data-theme="dark"] .features {
    background: var(--neutral-100);
}

[data-theme="dark"] .trading {
    background: var(--neutral-50);
}

[data-theme="dark"] .analytics {
    background: var(--neutral-100);
}

[data-theme="dark"] .footer {
    background: var(--neutral-50);
    border-top: 1px solid var(--neutral-200);
}

/* Feature cards in dark mode */
[data-theme="dark"] .feature-card {
    background: var(--neutral-200);
    border: 1px solid var(--neutral-300);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .feature-card:hover {
    background: var(--neutral-100);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* Analytics cards in dark mode */
[data-theme="dark"] .analytics-card {
    background: var(--neutral-200);
    border: 1px solid var(--neutral-300);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .analytics-card:hover {
    background: var(--neutral-100);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* Trading cards in dark mode */
[data-theme="dark"] .trading-card {
    background: var(--neutral-200);
    border: 1px solid var(--neutral-300);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .chart-placeholder {
    background: var(--neutral-100);
    border: 1px solid var(--neutral-300);
}

/* Enhanced transitions for smooth theme switching */
* {
    transition: background-color var(--transition-normal), 
                color var(--transition-normal), 
                border-color var(--transition-normal),
                box-shadow var(--transition-normal);
}

/* Navbar improvements for dark mode */
[data-theme="dark"] .navbar {
    background: rgba(15, 23, 42, 0.95);
    border-bottom: 1px solid var(--neutral-200);
}

/* Button improvements for dark mode */
[data-theme="dark"] .btn-outline {
    border-color: var(--neutral-400);
    color: var(--neutral-700);
}

[data-theme="dark"] .btn-outline:hover {
    background: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
}

/* Form elements in dark mode */
[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea {
    background: var(--neutral-200);
    border: 1px solid var(--neutral-300);
    color: var(--neutral-800);
}

[data-theme="dark"] input:focus,
[data-theme="dark"] select:focus,
[data-theme="dark"] textarea:focus {
    background: var(--neutral-100);
    border-color: var(--primary-blue);
}

/* Enhanced theme toggle for better UX */
.theme-toggle {
    transition: all var(--transition-normal);
}

.theme-toggle:hover {
    transform: scale(1.1);
    background: rgba(0, 82, 255, 0.1);
    border-radius: var(--radius-lg);
}

/* === PORTFOLIO SECTION - ALWAYS DEFAULT DARK === */
/* Ensure portfolio maintains its default dark appearance regardless of theme toggle */

.portfolio *,
.portfolio-sidebar,
.portfolio-main,
.portfolio-demo,
[data-theme="dark"] .portfolio *,
[data-theme="dark"] .portfolio-sidebar,
[data-theme="dark"] .portfolio-main,
[data-theme="dark"] .portfolio-demo,
[data-theme="light"] .portfolio *,
[data-theme="light"] .portfolio-sidebar,
[data-theme="light"] .portfolio-main,
[data-theme="light"] .portfolio-demo {
    background: inherit !important;
    color: inherit !important;
}

.portfolio-sidebar,
[data-theme="dark"] .portfolio-sidebar,
[data-theme="light"] .portfolio-sidebar {
    background: #1e293b !important;
    border: 1px solid #334155 !important;
}

.portfolio-main,
[data-theme="dark"] .portfolio-main,
[data-theme="light"] .portfolio-main {
    background: #1e293b !important;
    border: 1px solid #334155 !important;
}

.portfolio .section-title,
[data-theme="dark"] .portfolio .section-title,
[data-theme="light"] .portfolio .section-title {
    color: #ffffff !important;
}

.portfolio .section-subtitle,
[data-theme="dark"] .portfolio .section-subtitle,
[data-theme="light"] .portfolio .section-subtitle {
    color: #94a3b8 !important;
}

.holdings-table,
[data-theme="dark"] .holdings-table,
[data-theme="light"] .holdings-table {
    background: #0f172a !important;
}

.table-header,
[data-theme="dark"] .table-header,
[data-theme="light"] .table-header {
    background: #1e293b !important;
    color: #94a3b8 !important;
}

.table-row,
[data-theme="dark"] .table-row,
[data-theme="light"] .table-row {
    background: #0f172a !important;
    border-bottom: 1px solid #1e293b !important;
}

.table-row:hover,
[data-theme="dark"] .table-row:hover,
[data-theme="light"] .table-row:hover {
    background: #1e293b !important;
}