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

.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.page-loader-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2xl);
}

.page-loader-logo {
    text-align: center;
}

.page-loader-logo h2 {
    color: var(--accent-color);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.page-loader-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 400;
    text-align: center;
}

.page-loader-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.loader-chart-bars {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: var(--spacing-sm);
    height: 80px;
}

.loader-bar {
    width: 8px;
    background: linear-gradient(180deg, var(--accent-color), var(--primary-dark));
    border-radius: var(--radius-sm);
    animation: loaderBarBounce 1.2s ease-in-out infinite both;
    opacity: 0.8;
    transition: opacity var(--transition-normal);
}

.loader-bar:nth-child(1) {
    animation-delay: 0s;
}

.loader-bar:nth-child(2) {
    animation-delay: 0.1s;
}

.loader-bar:nth-child(3) {
    animation-delay: 0.2s;
}

.loader-bar:nth-child(4) {
    animation-delay: 0.3s;
}

.loader-bar:nth-child(5) {
    animation-delay: 0.4s;
}

.loader-bar:nth-child(6) {
    animation-delay: 0.5s;
}

.loader-bar:nth-child(7) {
    animation-delay: 0.6s;
}

.loader-bar:nth-child(8) {
    animation-delay: 0.7s;
}

.loader-text {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
}

.loader-dots {
    display: inline-flex;
    gap: 4px;
    margin-left: 4px;
}

.loader-dots span {
    width: 8px;
    height: 8px;
    background: var(--accent-color);
    border-radius: 50%;
    animation: loaderDotBounce 1.4s ease-in-out infinite both;
}

.loader-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.loader-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes loaderBarBounce {
    0%, 40%, 100% {
        transform: scaleY(0.4);
    }
    20% {
        transform: scaleY(1);
    }
}

@keyframes loaderDotBounce {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

.main-wrapper {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.main-wrapper.loaded {
    opacity: 1;
}

:root {
    --primary-color: #FF6B35;
    --primary-dark: #E55A2B;
    --bg-primary: #0A0A0A;
    --bg-secondary: #1A1A1A;
    --bg-tertiary: #2A2A2A;
    --text-primary: #FFFFFF;
    --text-secondary: #B0B0B0;
    --text-muted: #666666;
    --border-color: #333333;
    --accent-color: #FF6B35;
    
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

::selection {
    background: var(--accent-color);
    color: white;
}

::-moz-selection {
    background: var(--accent-color);
    color: white;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: var(--spacing-md) 0;
}

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

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

.main-logo {
    display: flex;
    align-items: center;
}

.logo-image {
    height: 78px;
    width: auto;
    object-fit: contain;
}

.nav-logo {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-logo h2 {
    font-weight: 700;
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

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

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width var(--transition-normal);
}

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

.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    line-height: 1;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    border: 1px solid var(--primary-color);
}

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

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

/* ensure icons are centered inside buttons */
.btn svg { display: inline-block; vertical-align: middle; flex-shrink: 0; pointer-events: none; }
.btn .icon, .btn svg { margin-top: 0; margin-bottom: 0; }

.btn-secondary:hover {
    border-color: var(--accent-color);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

.btn-full {
    width: 100%;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    padding-top: 80px;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-content {
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.text-accent {
    color: var(--accent-color);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.data-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.data-cell {
    width: 120px;
    height: 120px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--accent-color);
    position: relative;
    overflow: hidden;
}

.data-cell::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 107, 53, 0.1), transparent);
    transition: left 2s ease;
}

.features {
    padding: var(--spacing-4xl) 0;
    background: #131313;
    position: relative;
    overflow: hidden;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-2xl);
}

.features-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.features-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
    text-align: center;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-4xl);
    position: relative;
    z-index: 1;
}

.feature-card.premium {
    background: transparent;
    border: none;
    padding: 0;
    text-align: left;
    transition: all var(--transition-normal);
    position: relative;
}

.feature-card-inner {
    background: #1C1C1C;
    border: 1px solid #333333;
    border-radius: 18px;
    padding: var(--spacing-xl);
    height: 100%;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    max-width: 350px;
    margin: 0 auto;
}

.feature-card.premium:hover .feature-card-inner {
    border-color: var(--accent-color);
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
}



.feature-icon {
    width: 70px;
    height: 70px;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: rgba(255, 107, 53, 0.1);
    border: 2px solid var(--accent-color);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.15);
    position: relative;
    z-index: 2;
    transition: all var(--transition-normal);
}

.feature-icon svg {
    width: 36px;
    height: 36px;
    stroke: var(--accent-color);
}

.feature-content h3 {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 2;
}

.feature-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
    position: relative;
    z-index: 2;
    font-size: 0.95rem;
}

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

@keyframes floatAnimation {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(1deg); }
    66% { transform: translateY(-10px) rotate(-1deg); }
}

.about {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

.about-content {
    max-width: 1200px;
    margin: 0 auto;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-main .section-title {
    text-align: left;
    margin-bottom: var(--spacing-xl);
}

.about-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.about-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.about-feature:hover {
    border-color: var(--accent-color);
    transform: translateX(10px);
}

.about-feature-icon {
    width: 40px;
    height: 40px;
    color: var(--accent-color);
    flex-shrink: 0;
}

.about-feature-icon svg {
    width: 100%;
    height: 100%;
}

.about-feature-text h4 {
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.about-feature-text p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.about-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.ecosystem-diagram {
    position: relative;
    width: 300px;
    height: 300px;
}

.ecosystem-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
}

.ecosystem-core {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--accent-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
    animation: pulse 3s infinite;
    overflow: hidden;
}

.ecosystem-logo {
    width: 100px;
    height: 100px;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.ecosystem-nodes {
    position: relative;
    width: 100%;
    height: 100%;
}

.ecosystem-node {
    position: absolute;
    width: 80px;
    height: 80px;
    background: var(--bg-secondary);
    border: 2px solid var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.75rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    animation: float 4s ease-in-out infinite;
}

.ecosystem-node::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 2px;
    height: 60px;
    background: linear-gradient(to bottom, var(--accent-color), transparent);
    transform-origin: top center;
    z-index: -1;
}

.node-1 {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 0s;
}

.node-1::before {
    transform: translateX(-50%) rotate(180deg);
}

.node-2 {
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    animation-delay: 1s;
}

.node-2::before {
    transform: translateX(-50%) rotate(270deg);
}

.node-3 {
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 2s;
}

.node-3::before {
    transform: translateX(-50%) rotate(0deg);
}

.node-4 {
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    animation-delay: 3s;
}

.node-4::before {
    transform: translateX(-50%) rotate(90deg);
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
    }
    50% {
        transform: translateY(-10px) translateX(0);
    }
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    z-index: 2000;
    padding: var(--spacing-lg);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 400px;
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

.auth-form {
    padding: var(--spacing-lg);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-primary);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(255, 107, 53, 0.1);
}

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

.auth-footer {
    text-align: center;
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.auth-footer-item {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xs);
}

.auth-footer a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
}

.auth-footer a:hover {
    text-decoration: underline;
}



@media (max-width: 1024px) {
    .container, .nav-container {
        padding: 0 var(--spacing-lg);
    }
    
    .sidebar {
        width: 200px;
    }
    
    .main-content {
        margin-left: 200px;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 var(--spacing-md);
        position: relative;
    }
    
    .brand-container {
        gap: var(--spacing-sm);
    }
    
    .main-logo {
        display: none;
    }
    
    .nav-logo h2 {
        font-size: 1.25rem;
    }
    
    .logo-subtitle {
        font-size: 0.7rem;
    }
    
    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 280px;
        background: var(--bg-secondary);
        border-left: 1px solid var(--border-color);
        flex-direction: column;
        justify-content: flex-start;
        align-items: stretch;
        padding: var(--spacing-2xl) var(--spacing-lg);
        gap: var(--spacing-lg);
        transition: right 0.3s ease;
        z-index: 1000;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.3);
    }
    
    .nav-links.open {
        display: flex;
        right: 0;
    }
    
    .nav-links .nav-link {
        padding: var(--spacing-md);
        border-radius: var(--radius-md);
        text-align: center;
        font-size: 1.1rem;
        font-weight: 500;
        transition: all var(--transition-normal);
        border: 1px solid transparent;
        color: var(--text-primary);
        text-decoration: none;
    }
    
    .nav-links .nav-link:hover {
        background: var(--bg-tertiary);
        border-color: var(--border-color);
        color: var(--accent-color);
    }
    
    .nav-links .btn {
        width: 100%;
        min-height: 48px;
        font-size: 1rem;
        font-weight: 600;
        margin-top: var(--spacing-md);
    }
    
    .mobile-nav-toggle {
        display: block;
        background: none;
        border: none;
        color: var(--text-primary);
        font-size: 1.5rem;
        cursor: pointer;
        padding: var(--spacing-sm);
        border-radius: var(--radius-sm);
        transition: all var(--transition-normal);
        z-index: 1001;
        position: relative;
    }
    
    .mobile-nav-toggle:hover {
        background: var(--bg-secondary);
        color: var(--accent-color);
    }
    
    .mobile-nav-toggle svg {
        width: 24px;
        height: 24px;
    }
    
    .nav-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }
    
    .nav-overlay.active {
        display: block;
    }
    
    .hero {
        padding-top: 100px;
        min-height: calc(100vh - 20px);
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        padding: var(--spacing-lg);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .data-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .data-cell {
        width: 80px;
        height: 80px;
        font-size: 0.8rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .feature-card-inner {
        padding: var(--spacing-xl);
    }
    
    .feature-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .feature-stat {
        padding: var(--spacing-sm);
    }
    
    .modal {
        padding: var(--spacing-sm);
    }
    
    .modal-content {
        margin: var(--spacing-md);
        width: calc(100% - 2 * var(--spacing-md));
        max-height: 85vh;
        overflow-y: auto;
    }
    
    .modal-header {
        padding: var(--spacing-md);
    }
    
    .modal-header h3 {
        font-size: 1.125rem;
    }
    
    .modal-close {
        min-width: 44px;
        min-height: 44px;
        font-size: 1.5rem;
    }
    
    .auth-form {
        padding: var(--spacing-md);
    }
    
    .auth-form .form-group {
        margin-bottom: var(--spacing-md);
    }
    
    .auth-form input {
        font-size: 16px;
        min-height: 48px;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .auth-form .btn {
        min-height: 52px;
        font-size: 1rem;
        width: 100%;
    }
    
    .auth-footer {
        padding: var(--spacing-md);
        text-align: center;
    }
    
    .auth-footer-item {
        margin: var(--spacing-sm) 0;
        display: block;
    }
    
    .auth-footer-item a {
        display: inline-block;
        padding: var(--spacing-sm);
        min-height: 44px;
        line-height: 1.4;
    }
    
    .sidebar {
        position: fixed;
        left: -250px;
        top: 0;
        height: 100vh;
        width: 250px;
        z-index: 1000;
        transition: left 0.3s ease;
        background: var(--bg-secondary);
        border-right: 1px solid var(--border-color);
    }
    
    .sidebar.open {
        left: 0;
    }
    
    .main-content {
        margin-left: 0;
        width: 100%;
    }
    
    .dashboard-body {
        overflow-x: hidden;
    }
    
    .mobile-menu-toggle {
        display: block;
        position: fixed;
        top: var(--spacing-md);
        left: var(--spacing-md);
        z-index: 1001;
        background: var(--bg-secondary);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: var(--spacing-sm);
        color: var(--text-primary);
        cursor: pointer;
        transition: all var(--transition-normal);
    }
    
    .mobile-menu-toggle:hover {
        background: var(--bg-tertiary);
        color: var(--accent-color);
    }
    
    .mobile-menu-toggle svg {
        width: 20px;
        height: 20px;
    }
    
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }
    
    .sidebar-overlay.active {
        display: block;
    }
    
    .top-bar {
        padding-left: 60px;
    }
}

@media (max-width: 480px) {
    .container, .nav-container {
        padding: 0 var(--spacing-sm);
    }
    
    .brand-container {
        gap: var(--spacing-xs);
    }
    
    .main-logo {
        display: none;
    }
    
    .nav-logo h2 {
        font-size: 1.125rem;
    }
    
    .logo-subtitle {
        font-size: 0.65rem;
    }
    
    .hero {
        padding-top: 90px;
        min-height: calc(100vh - 10px);
    }
    
    .data-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xs);
    }
    
    .data-cell {
        width: 60px;
        height: 60px;
        font-size: 0.75rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .modal-content {
        margin: var(--spacing-sm);
        width: calc(100% - 2 * var(--spacing-sm));
        min-width: auto;
    }
    
    .feature-card-inner {
        padding: var(--spacing-lg);
    }
    
    .mobile-menu-toggle {
        top: var(--spacing-sm);
        left: var(--spacing-sm);
        padding: var(--spacing-xs);
    }
    
    .top-bar {
        padding-left: 50px;
        padding-right: var(--spacing-sm);
    }
    
    .sidebar {
        width: 100%;
        max-width: 280px;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .modal-content {
        width: calc(100% - 2 * var(--spacing-sm));
        margin: var(--spacing-sm);
    }
    
    .modal-header {
        padding: var(--spacing-sm);
    }
    
    .auth-form {
        padding: var(--spacing-sm);
    }
    
    .auth-form input {
        min-height: 52px;
        padding: var(--spacing-sm);
    }
    
    .auth-form .btn {
        min-height: 56px;
        font-size: 1.1rem;
    }
    
    .nav-links {
        width: 100%;
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .nav-links .nav-link {
        padding: var(--spacing-md);
        font-size: 1rem;
    }
    
    .nav-links .btn {
        min-height: 52px;
        font-size: 1rem;
    }
}

@media (max-width: 768px) {
    .notification-container {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        left: var(--spacing-sm);
        width: auto;
    }
    
    .notification {
        margin-bottom: var(--spacing-sm);
        padding: var(--spacing-md);
        font-size: 0.9rem;
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-lg);
    }
    
    .notification-icon {
        width: 20px;
        height: 20px;
    }
    
    .notification-close {
        min-width: 40px;
        min-height: 40px;
        font-size: 1.25rem;
    }
}

@media (pointer: coarse) {
    .btn, .nav-item, .sidebar-nav a, .modal-close, .auth-footer a {
        min-height: 44px;
        min-width: 44px;
    }
    
    input, select, textarea {
        min-height: 48px;
        font-size: 16px;
    }
    
    .toggle-switch {
        min-width: 48px;
        min-height: 28px;
    }
    
    .nav-link {
        padding: var(--spacing-md);
    }
    
    .sidebar-nav .nav-item {
        margin-bottom: var(--spacing-xs);
    }
}

.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

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

.footer-section h4 {
    color: var(--text-primary);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.footer-logo h3 {
    color: var(--accent-color);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.footer-logo p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-normal);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-copyright p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-legal {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-legal a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-normal);
}

.footer-legal a:hover {
    color: var(--accent-color);
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-legal {
        justify-content: center;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .about-main .section-title {
        text-align: center;
    }
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}

.mobile-menu-toggle {
    display: none;
}

.sidebar-overlay {
    display: none;
}

.mobile-nav-toggle {
    display: none;
}

.nav-overlay {
    display: none;
}