/* ============================================
   MicroTrack Detection - Main Stylesheet
   ============================================ */

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--neutral-700);
    background-color: var(--white);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

ul, ol {
    list-style: none;
}

/* -------------------- CSS Variables -------------------- */
:root {
    /* Colors - Primary */
    --primary-blue: #0A7AFF;
    --primary-dark: #0052CC;
    --primary-light: #E3F2FD;
    
    /* Colors - Accent */
    --accent-cyan: #00D9FF;
    --accent-teal: #00BFA5;
    --accent-purple: #7C4DFF;
    
    /* Colors - Neutral */
    --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;
    --white: #FFFFFF;
    
    /* Colors - Data Visualization */
    --data-fiber: #FF6B9D;
    --data-fragment: #FFC107;
    --data-bead: #4CAF50;
    --data-metal: #9E9E9E;
    
    /* Colors - Semantic */
    --color-success: #00BFA5;
    --color-warning: #FFC107;
    --color-error: #FF5252;
    --color-info: #0A7AFF;
    
    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #0A7AFF 0%, #00D9FF 100%);
    --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.7) 100%);
    --gradient-dark: linear-gradient(180deg, #0F172A 0%, #1E293B 100%);
    --gradient-mesh: radial-gradient(circle at 20% 50%, rgba(10, 122, 255, 0.15) 0%, transparent 50%),
                     radial-gradient(circle at 80% 80%, rgba(0, 217, 255, 0.15) 0%, transparent 50%);
    
    /* Typography */
    --font-display: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: '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 */
    
    /* Font Weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    
    /* Spacing */
    --spacing-xs: 0.25rem;   /* 4px */
    --spacing-sm: 0.5rem;    /* 8px */
    --spacing-md: 1rem;      /* 16px */
    --spacing-lg: 1.5rem;    /* 24px */
    --spacing-xl: 2rem;      /* 32px */
    --spacing-2xl: 3rem;     /* 48px */
    --spacing-3xl: 4rem;     /* 64px */
    --spacing-4xl: 6rem;     /* 96px */
    
    /* Border Radius */
    --radius-sm: 0.375rem;   /* 6px */
    --radius-md: 0.5rem;     /* 8px */
    --radius-lg: 1rem;       /* 16px */
    --radius-xl: 1.5rem;     /* 24px */
    --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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-bounce: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-index layers */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* -------------------- Layout -------------------- */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-narrow {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-wide {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: 120px 0;
}


/* -------------------- Typography -------------------- */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-bold);
    line-height: 1.2;
    color: var(--neutral-900);
}

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

.gradient-text {
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* -------------------- Buttons -------------------- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    background: var(--gradient-hero);
    color: var(--white);
    font-weight: var(--font-semibold);
    font-size: var(--text-base);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 12px rgba(10, 122, 255, 0.3);
    transition: all var(--transition-bounce);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(10, 122, 255, 0.4);
}

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

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    background: transparent;
    color: var(--primary-blue);
    font-weight: var(--font-semibold);
    font-size: var(--text-base);
    border: 2px solid var(--primary-blue);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.btn-outline:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    background: var(--neutral-100);
    color: var(--neutral-700);
    font-weight: var(--font-semibold);
    font-size: var(--text-base);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.btn-secondary:hover {
    background: var(--neutral-200);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: var(--text-lg);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* -------------------- Scroll Progress Bar -------------------- */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--gradient-hero);
    z-index: var(--z-fixed);
    transition: width 0.1s ease;
}

/* -------------------- Navigation -------------------- */
.navbar {
    position: sticky;
    top: 0;
    left: 0;
    width: 100%;
    backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, 0.8);
    border-bottom: 1px solid rgba(15, 23, 42, 0.1);
    z-index: var(--z-sticky);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-weight: var(--font-bold);
    font-size: var(--text-xl);
    color: var(--neutral-900);
}

.logo-image {
    width: 40px;
    height: 40px;
    display: block;
    flex-shrink: 0; /* Предотвращает сжатие логотипа */
}

.logo-text {
    display: none;
}


.nav-links {
    display: none;
    gap: var(--spacing-xl);
}

.nav-link {
    font-weight: var(--font-medium);
    color: var(--neutral-700);
    position: relative;
}

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

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

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

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

/* Language Switcher */
.language-switcher {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 0.75rem;
    font-weight: var(--font-medium);
    color: var(--neutral-700);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.lang-btn:hover {
    background: var(--neutral-100);
}

.lang-btn .chevron {
    transition: transform var(--transition-base);
}

.lang-btn.active .chevron {
    transform: rotate(180deg);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 160px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
}

.lang-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: block;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-weight: var(--font-medium);
    color: var(--neutral-700);
    transition: all var(--transition-base);
}

.lang-option:hover {
    background: var(--neutral-100);
    color: var(--primary-blue);
}

.lang-option.active {
    background: var(--primary-light);
    color: var(--primary-blue);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 30px;
    height: 24px;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--neutral-700);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* -------------------- Hero Section -------------------- */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    background: var(--gradient-mesh), linear-gradient(180deg, #FFFFFF 0%, var(--neutral-100) 100%);
    overflow: hidden;
    padding: 120px 0 80px;
}

.particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    background: rgba(10, 122, 255, 0.1);
    color: var(--primary-blue);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-lg);
}

.hero-title {
    font-size: var(--text-4xl);
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--neutral-600);
    margin-bottom: var(--spacing-2xl);
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

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

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

.stat-number {
    font-size: var(--text-4xl);
    font-weight: var(--font-bold);
    color: var(--primary-blue);
    line-height: 1;
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--neutral-600);
    margin-top: var(--spacing-xs);
}

/* Hero Visual */
.hero-visual {
    display: none;
}

.phone-mockup {
    position: relative;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

.phone-frame {
    position: relative;
    width: 100%;
    aspect-ratio: 9 / 19;
    background: var(--neutral-900);
    border-radius: 40px;
    padding: 12px;
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.3);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--white);
    border-radius: 32px;
    overflow: hidden;
    position: relative;
}

.app-screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 1s ease;
}

.app-screenshot.active {
    opacity: 1;
}

.floating-card {
    position: absolute;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: float 3s ease-in-out infinite;
}

.card-1 { top: 10%; right: -20%; animation-delay: 0s; }
.card-2 { bottom: 30%; left: -25%; animation-delay: 1s; }
.card-3 { top: 50%; right: -15%; animation-delay: 2s; }

.card-icon {
    font-size: var(--text-2xl);
}

.card-title {
    font-size: var(--text-xs);
    color: var(--neutral-600);
}

.card-value {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--neutral-900);
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-15px);
    }
}

/* -------------------- Trusted By Section -------------------- */
.trusted-by {
    padding: var(--spacing-3xl) 0;
    background: var(--white);
    border-bottom: 1px solid var(--neutral-200);
}

.trusted-label {
    text-align: center;
    font-size: var(--text-sm);
    color: var(--neutral-600);
    font-weight: var(--font-medium);
    margin-bottom: var(--spacing-lg);
}

.trust-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-lg);
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--neutral-100);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--neutral-700);
}

/* -------------------- Section Headers -------------------- */
.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-4xl);
}

.section-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--primary-light);
    color: var(--primary-blue);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
}

.section-title {
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: var(--text-lg);
    color: var(--neutral-600);
}

/* -------------------- Product Overview Section -------------------- */
.product-overview {
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

.feature-card {
    padding: var(--spacing-2xl);
    background: var(--white);
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.feature-card:hover {
    border-color: var(--primary-blue);
    box-shadow: 0 8px 30px rgba(10, 122, 255, 0.1);
    transform: translateY(-4px);
}

.feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.feature-icon svg {
    color: var(--primary-blue);
}

.feature-title {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--spacing-md);
    color: var(--neutral-900);
}

.feature-description {
    font-size: var(--text-base);
    color: var(--neutral-600);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.feature-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: var(--font-semibold);
    color: var(--primary-blue);
    font-size: var(--text-sm);
}

.feature-link:hover {
    gap: var(--spacing-sm);
}

/* -------------------- How It Works Section -------------------- */
.how-it-works {
    background: var(--gradient-mesh), var(--neutral-100);
}

.process-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3xl);
}

.process-step {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: start;
    padding: var(--spacing-2xl);
    background: var(--white);
    border-radius: var(--radius-xl);
    position: relative;
}

.step-number {
    position: absolute;
    top: -20px;
    left: var(--spacing-2xl);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero);
    color: var(--white);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    border-radius: var(--radius-full);
    box-shadow: 0 4px 12px rgba(10, 122, 255, 0.3);
}

.step-content {
    padding-top: var(--spacing-xl);
}

.step-title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--spacing-md);
    color: var(--neutral-900);
}

.step-description {
    font-size: var(--text-base);
    color: var(--neutral-600);
    line-height: 1.7;
}

.step-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.step-image {
    width: 200px;
    height: 200px;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    object-fit: cover;
}


/* -------------------- Science Section -------------------- */
.science-section {
    background: var(--white);
}

.science-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

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

.science-metrics {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin: var(--spacing-2xl) 0;
}

.metric-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--neutral-100);
    border-radius: var(--radius-lg);
}

.metric-icon {
    font-size: var(--text-3xl);
}

.metric-content {
    flex: 1;
}

.metric-label {
    font-size: var(--text-sm);
    color: var(--neutral-600);
    margin-bottom: var(--spacing-xs);
}

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

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

.cta-note {
    font-size: var(--text-sm);
    color: var(--neutral-600);
}

.science-visual {
    background: var(--white);
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
}

.chart-container {
    position: relative;
    height: 300px;
    margin-bottom: var(--spacing-lg);
}

.chart-caption {
    text-align: center;
    font-size: var(--text-sm);
    color: var(--neutral-600);
    font-style: italic;
}

.validation-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-4xl);
}

.validation-card {
    padding: var(--spacing-xl);
    background: var(--neutral-100);
    border-radius: var(--radius-lg);
}

.validation-card h4 {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    margin-bottom: var(--spacing-sm);
    color: var(--neutral-900);
}

.validation-card p {
    font-size: var(--text-sm);
    color: var(--neutral-600);
}

/* -------------------- Devices Section -------------------- */
.devices-section {
    background: var(--gradient-mesh), var(--neutral-100);
}

.devices-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
}

.device-card {
    position: relative;
    padding: var(--spacing-2xl);
    background: var(--white);
    border: 2px solid var(--neutral-200);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.device-card:hover {
    border-color: var(--primary-blue);
    box-shadow: 0 12px 40px rgba(10, 122, 255, 0.15);
    transform: translateY(-4px);
}

.device-card.featured {
    border-color: var(--primary-blue);
    background: linear-gradient(135deg, rgba(10, 122, 255, 0.02) 0%, rgba(0, 217, 255, 0.02) 100%);
}

.featured-label {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 1rem;
    background: var(--gradient-hero);
    color: var(--white);
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: var(--radius-full);
}

.device-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    text-transform: uppercase;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-lg);
}

.device-badge.water {
    background: rgba(33, 150, 243, 0.1);
    color: #2196F3;
}

.device-badge.air {
    background: rgba(156, 39, 176, 0.1);
    color: #9C27B0;
}

.device-badge.marine {
    background: rgba(0, 191, 165, 0.1);
    color: #00BFA5;
}

.device-image {
    margin-bottom: var(--spacing-xl);
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 16 / 9;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--neutral-100);
    border-radius: var(--radius-lg);
}

.device-name {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--spacing-md);
    color: var(--neutral-900);
}

.device-description {
    font-size: var(--text-base);
    color: var(--neutral-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.device-specs {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.device-specs li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--text-sm);
    color: var(--neutral-700);
}

.device-specs svg {
    color: var(--color-success);
    flex-shrink: 0;
}

.device-applications {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.app-tag {
    padding: 0.375rem 0.75rem;
    background: var(--neutral-100);
    color: var(--neutral-700);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    border-radius: var(--radius-full);
}

/* Membrane Info */
.membrane-info {
    margin-top: var(--spacing-4xl);
    padding: var(--spacing-2xl);
    background: var(--white);
    border-radius: var(--radius-xl);
    border: 1px solid var(--neutral-200);
}

.membrane-info h3 {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.membrane-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.membrane-card {
    padding: var(--spacing-lg);
    background: var(--neutral-100);
    border-radius: var(--radius-lg);
    text-align: center;
}

.membrane-type {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--neutral-900);
    margin-bottom: var(--spacing-xs);
}

.membrane-specs {
    font-size: var(--text-sm);
    color: var(--primary-blue);
    font-weight: var(--font-semibold);
    margin-bottom: var(--spacing-sm);
}

.membrane-card p {
    font-size: var(--text-sm);
    color: var(--neutral-600);
}

/* -------------------- Use Cases Section -------------------- */
.use-cases-section {
    background: var(--white);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

.use-case-card {
    padding: var(--spacing-2xl);
    background: var(--neutral-100);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.use-case-card:hover {
    background: var(--white);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.use-case-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
}

.use-case-card h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--spacing-md);
    color: var(--neutral-900);
}

.use-case-card p {
    font-size: var(--text-base);
    color: var(--neutral-600);
    line-height: 1.7;
}

/* -------------------- Pricing Section -------------------- */
.pricing-section {
    background: var(--gradient-mesh), var(--neutral-100);
}

.pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.pricing-card {
    position: relative;
    padding: var(--spacing-2xl);
    background: var(--white);
    border: 2px solid var(--neutral-200);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.pricing-card:hover {
    border-color: var(--primary-blue);
    box-shadow: 0 12px 40px rgba(10, 122, 255, 0.15);
    transform: translateY(-4px);
}

.pricing-card.featured {
    border-color: var(--primary-blue);
    background: linear-gradient(135deg, rgba(10, 122, 255, 0.02) 0%, rgba(0, 217, 255, 0.02) 100%);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 1rem;
    background: var(--gradient-hero);
    color: var(--white);
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: var(--radius-full);
}

.pricing-header {
    text-align: center;
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--neutral-200);
    margin-bottom: var(--spacing-xl);
}

.plan-name {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--spacing-md);
    color: var(--neutral-900);
}

.plan-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.price-amount {
    font-size: var(--text-5xl);
    font-weight: var(--font-bold);
    color: var(--primary-blue);
}

.price-period {
    font-size: var(--text-lg);
    color: var(--neutral-600);
}

.plan-description {
    font-size: var(--text-sm);
    color: var(--neutral-600);
}

.plan-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.plan-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--text-sm);
}

.feature-included {
    color: var(--neutral-700);
}

.feature-excluded {
    color: var(--neutral-400);
}

.pricing-note {
    text-align: center;
    font-size: var(--text-sm);
    color: var(--neutral-600);
    font-style: italic;
}

/* -------------------- FAQ Section -------------------- */
.faq-section {
    background: var(--white);
}

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

.faq-item {
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item.active {
    border-color: var(--primary-blue);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--white);
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--neutral-900);
    text-align: left;
    transition: all var(--transition-base);
}

.faq-question:hover {
    background: var(--neutral-100);
}

.faq-icon {
    flex-shrink: 0;
    color: var(--primary-blue);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--spacing-xl) var(--spacing-xl);
    font-size: var(--text-base);
    color: var(--neutral-600);
    line-height: 1.7;
}

/* -------------------- Resources Section -------------------- */
.resources-section {
    background: var(--gradient-mesh), var(--neutral-100);
}

.resources-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

.resource-card {
    padding: var(--spacing-2xl);
    background: var(--white);
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    display: block;
}

.resource-card:hover {
    border-color: var(--primary-blue);
    box-shadow: 0 8px 30px rgba(10, 122, 255, 0.1);
    transform: translateY(-4px);
}

.resource-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.resource-card h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--spacing-md);
    color: var(--neutral-900);
}

.resource-card p {
    font-size: var(--text-base);
    color: var(--neutral-600);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.resource-meta {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    background: var(--neutral-100);
    color: var(--neutral-600);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    border-radius: var(--radius-full);
}

/* -------------------- Contact Section -------------------- */
.contact-section {
    background: var(--white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-4xl);
}

.contact-info-cards {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.info-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--neutral-100);
    border-radius: var(--radius-lg);
}

.info-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    border-radius: var(--radius-md);
    color: var(--primary-blue);
    flex-shrink: 0;
}

.info-content {
    flex: 1;
}

.info-label {
    font-size: var(--text-sm);
    color: var(--neutral-600);
    margin-bottom: var(--spacing-xs);
}

.info-value {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--neutral-900);
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--neutral-100);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

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

.form-group label {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--neutral-700);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.875rem 1rem;
    background: var(--white);
    border: 1px solid var(--neutral-300);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    color: var(--neutral-900);
    font-family: inherit;
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(10, 122, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.checkbox-group {
    flex-direction: row;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

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

.checkbox-text {
    font-size: var(--text-sm);
    color: var(--neutral-700);
}

.form-privacy {
    text-align: center;
    font-size: var(--text-xs);
    color: var(--neutral-600);
}

.form-privacy a {
    color: var(--primary-blue);
    text-decoration: underline;
}

/* -------------------- Download CTA Section -------------------- */
.download-cta-section {
    background: var(--gradient-hero);
    color: var(--white);
}

.download-cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.download-cta-content h2 {
    font-size: var(--text-4xl);
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.download-cta-content p {
    font-size: var(--text-xl);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-3xl);
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-2xl);
}

.store-button {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-2xl);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.store-button:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.5);
}

.store-logo {
    height: 32px;
    display: block;
    flex-shrink: 0;
}

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

.store-label {
    font-size: var(--text-xs);
    color: rgba(255, 255, 255, 0.8);
}

.store-name {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--white);
}


.download-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
    justify-content: center;
    max-width: 600px;
    margin: 0 auto;
}

.download-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.9);
}

.download-feature svg {
    color: rgba(255, 255, 255, 1);
    flex-shrink: 0;
}


/* -------------------- Footer -------------------- */
.footer {
    background: var(--neutral-900);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--spacing-4xl) 0 var(--spacing-2xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-brand {
    max-width: 400px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--white);
    margin-bottom: var(--spacing-lg);
    transition: all var(--transition-base);
}

.footer-logo-image {
    width: 40px;
    height: 40px;
    display: block;
    flex-shrink: 0;
}



.footer-tagline {
    font-size: var(--text-sm);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.6);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

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

.footer-links-wrapper {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-2xl);
}

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

.footer-heading {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--white);
    margin-bottom: var(--spacing-sm);
}

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

.footer-links a {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.6);
    transition: all var(--transition-base);
}

.footer-links a:hover {
    color: var(--white);
    padding-left: var(--spacing-xs);
}

.footer-bottom {
    padding-top: var(--spacing-2xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
    text-align: center;
}

.footer-copyright,
.footer-made {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.5);
}

.footer-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
}

.footer-badge {
    padding: 0.375rem 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    border-radius: var(--radius-full);
}

/* -------------------- Back to Top Button -------------------- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero);
    color: var(--white);
    border-radius: var(--radius-full);
    box-shadow: 0 4px 12px rgba(10, 122, 255, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(10, 122, 255, 0.4);
}

/* -------------------- Responsive Design - Tablet -------------------- */
@media (min-width: 768px) {
    /* Typography */
    .hero-title {
        font-size: var(--text-5xl);
    }
    
    /* Hero */
    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .hero-cta {
        flex-wrap: nowrap;
    }
    
    /* Grids */
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .science-metrics {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .validation-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .devices-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .membrane-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .use-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .resources-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-row {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .download-buttons {
        flex-direction: row;
        justify-content: center;
    }
    
    .download-features {
        flex-direction: row;
    }
    
    .footer-content {
        grid-template-columns: 1.5fr 2fr;
    }
    
    .footer-links-wrapper {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

/* -------------------- Responsive Design - Desktop -------------------- */
@media (min-width: 1024px) {
    /* Container */
    .container {
        padding: 0 var(--spacing-2xl);
    }
    
    /* Section */
    .section {
        padding: 150px 0;
    }
    
    /* Typography */
    h1 { font-size: var(--text-6xl); }
    h2 { font-size: var(--text-5xl); }
    
    .hero-title {
        font-size: var(--text-6xl);
    }
    
    /* Navigation */
    .nav-links {
        display: flex;
    }
    
    .mobile-menu-toggle {
        display: none;
    }
    
    .logo-text {
        display: block;
    }
    
    /* Hero */
    .hero-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-4xl);
    }
    
    .hero-visual {
        display: block;
    }
    
    /* Process Timeline */
    .process-step {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-3xl);
    }
    
    .process-step:nth-child(even) .step-content {
        order: 2;
    }
    
    .process-step:nth-child(even) .step-visual {
        order: 1;
    }
    
    /* Science Section */
    .science-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .science-metrics {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Devices */
    .devices-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* Use Cases */
    .use-cases-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* Pricing */
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* Resources */
    .resources-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* Contact */
    .contact-wrapper {
        grid-template-columns: 1fr 1fr;
    }
    
    /* Chart */
    .chart-container {
        height: 400px;
    }
}

/* -------------------- Responsive Design - Large Desktop -------------------- */
@media (min-width: 1280px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .validation-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* -------------------- Animations -------------------- */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

/* AOS Animation Overrides */
[data-aos="fade-up"] {
    transform: translateY(30px);
    opacity: 0;
    transition: transform 0.6s ease, opacity 0.6s ease;
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
    opacity: 1;
}

[data-aos="fade-left"] {
    transform: translateX(-30px);
    opacity: 0;
    transition: transform 0.6s ease, opacity 0.6s ease;
}

[data-aos="fade-left"].aos-animate {
    transform: translateX(0);
    opacity: 1;
}

[data-aos="fade-right"] {
    transform: translateX(30px);
    opacity: 0;
    transition: transform 0.6s ease, opacity 0.6s ease;
}

[data-aos="fade-right"].aos-animate {
    transform: translateX(0);
    opacity: 1;
}

[data-aos="zoom-in"] {
    transform: scale(0.9);
    opacity: 0;
    transition: transform 0.6s ease, opacity 0.6s ease;
}

[data-aos="zoom-in"].aos-animate {
    transform: scale(1);
    opacity: 1;
}

/* -------------------- Utility Classes -------------------- */
.text-center {
    text-align: center;
}

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

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

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mt-2xl { margin-top: var(--spacing-2xl); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mb-2xl { margin-bottom: var(--spacing-2xl); }

.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

/* -------------------- Print Styles -------------------- */
@media print {
    .navbar,
    .mobile-menu-toggle,
    .back-to-top,
    .footer-social,
    .download-cta-section,
    .contact-form-wrapper {
        display: none;
    }
    
    .section {
        page-break-inside: avoid;
        padding: 20px 0;
    }
    
    body {
        background: white;
        color: black;
    }
}

/* -------------------- Dark Mode Support (Optional) -------------------- */
@media (prefers-color-scheme: dark) {
    /* Dark mode styles can be added here if needed */
}

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

/* Focus Styles */
*:focus-visible {
    outline: 3px solid var(--primary-blue);
    outline-offset: 2px;
}

button:focus-visible,
a:focus-visible {
    outline: 3px solid var(--primary-blue);
    outline-offset: 2px;
}

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

/* -------------------- Loading States -------------------- */
.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 3px solid var(--neutral-300);
    border-top-color: var(--primary-blue);
    border-radius: 50%;
    animation: spinner 0.6s linear infinite;
}

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

/* -------------------- Error States -------------------- */
.error-message {
    padding: var(--spacing-md);
    background: rgba(255, 82, 82, 0.1);
    border: 1px solid var(--color-error);
    border-radius: var(--radius-md);
    color: var(--color-error);
    font-size: var(--text-sm);
    margin-top: var(--spacing-sm);
}

.success-message {
    padding: var(--spacing-md);
    background: rgba(0, 191, 165, 0.1);
    border: 1px solid var(--color-success);
    border-radius: var(--radius-md);
    color: var(--color-success);
    font-size: var(--text-sm);
    margin-top: var(--spacing-sm);
}

/* -------------------- Custom Scrollbar -------------------- */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--neutral-100);
}

::-webkit-scrollbar-thumb {
    background: var(--neutral-400);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--neutral-500);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--neutral-400) var(--neutral-100);
}