/* ==========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================== */
:root {
    /* Color Palette */
    --color-bg-deep: #060913;
    --color-bg-dark: #0b0f19;
    --color-bg-card: #121829;
    --color-bg-card-hover: #1a233a;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);
    
    --color-text-primary: #ffffff;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    
    /* Brand Accents */
    --color-teal: #00f5d4;
    --color-teal-glow: rgba(0, 245, 212, 0.25);
    --color-teal-hover: #14ffd7;
    
    --color-indigo: #6366f1;
    --color-indigo-glow: rgba(99, 102, 241, 0.25);
    --color-indigo-hover: #818cf8;

    --color-gold: #ffb703;
    --color-gold-glow: rgba(255, 183, 3, 0.2);
    
    --color-danger: #ef4444;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    
    /* Typography */
    --font-sans: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Shadows & Glows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.6);
    --shadow-glow-teal: 0 0 25px var(--color-teal-glow);
    --shadow-glow-indigo: 0 0 25px var(--color-indigo-glow);
    
    /* Layout */
    --container-max-width: 1200px;
    --border-radius-sm: 6px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--color-bg-deep);
    color: var(--color-text-secondary);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--color-text-primary);
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg-deep);
}
::-webkit-scrollbar-thumb {
    background: var(--color-bg-card);
    border-radius: var(--border-radius-sm);
    border: 2px solid var(--color-bg-deep);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* ==========================================================================
   UTILITY CLASSES
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

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

.highlight {
    color: var(--color-teal);
    text-shadow: 0 0 15px rgba(0, 245, 212, 0.2);
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-teal) 0%, var(--color-indigo) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.pulse-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background-color: var(--color-teal);
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(0, 245, 212, 0.7);
    animation: pulse 1.8s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(0, 245, 212, 0.7);
    }
    70% {
        transform: scale(1);
        box-shadow: 0 0 0 10px rgba(0, 245, 212, 0);
    }
    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(0, 245, 212, 0);
    }
}

/* Grid & Layout Utilities */
.grid-2col {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

@media (min-width: 992px) {
    .grid-2col {
        grid-template-columns: 1.2fr 0.8fr;
    }
}

/* Button System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.75rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    gap: 0.5rem;
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-teal) 0%, var(--color-indigo) 100%);
    color: var(--color-bg-deep);
    box-shadow: 0 4px 20px rgba(0, 245, 212, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 245, 212, 0.4);
}

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

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--color-bg-card);
    color: var(--color-teal);
    border: 1px solid rgba(0, 245, 212, 0.3);
}

.btn-secondary:hover {
    background: rgba(0, 245, 212, 0.08);
    border-color: var(--color-teal);
    box-shadow: var(--shadow-glow-teal);
}

.btn-xs {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    border-radius: var(--border-radius-sm);
}

.btn-full {
    width: 100%;
}

.btn-icon {
    width: 18px;
    height: 18px;
}

/* ==========================================================================
   STICKY NAVBAR
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(6, 9, 19, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border);
    transition: background var(--transition-fast);
}

.navbar-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 1rem 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 32px;
    height: 32px;
    filter: drop-shadow(0 0 8px rgba(0, 245, 212, 0.4));
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -0.5px;
    color: var(--color-text-primary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

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

.nav-download-btn {
    padding: 0.5rem 1.25rem;
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.mobile-toggle .bar {
    width: 100%;
    height: 2px;
    background-color: var(--color-text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 65px;
        left: 0;
        width: 100%;
        height: calc(100vh - 65px);
        background: var(--color-bg-deep);
        flex-direction: column;
        justify-content: center;
        gap: 2.5rem;
        padding: 2rem;
        transform: translateX(100%);
        transition: transform var(--transition-normal);
        border-top: 1px solid var(--color-border);
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
    position: relative;
    padding: 10rem 0 6rem;
    overflow: hidden;
}

.hero-background-glow {
    position: absolute;
    top: -10%;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 60%;
    background: radial-gradient(circle, rgba(0, 245, 212, 0.06) 0%, rgba(99, 102, 241, 0.04) 50%, rgba(0,0,0,0) 100%);
    pointer-events: none;
    z-index: 1;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

@media (min-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr 1.1fr;
    }
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.migration-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(0, 245, 212, 0.08);
    border: 1px solid rgba(0, 245, 212, 0.2);
    color: var(--color-teal);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.4rem 1rem;
    border-radius: 100px;
    margin-bottom: 2rem;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

@media (min-width: 576px) {
    .hero-title {
        font-size: 3.5rem;
    }
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: 2.5rem;
    max-width: 540px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
}

/* ==========================================================================
   CSS WALLET MOCKUP
   ========================================================================== */
.hero-mockup-container {
    width: 100%;
    perspective: 1000px;
}

.wallet-mockup {
    background: rgba(18, 24, 41, 0.85);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transform: rotateY(-3deg) rotateX(2deg);
    transition: transform var(--transition-normal);
}

.wallet-mockup:hover {
    transform: rotateY(0deg) rotateX(0deg) translateY(-5px);
    border-color: rgba(0, 245, 212, 0.3);
    box-shadow: 0 15px 45px rgba(0, 0, 0, 0.8), 0 0 30px rgba(0, 245, 212, 0.05);
}

/* Mockup Header */
.mockup-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(11, 15, 25, 0.9);
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
}

.mockup-window-controls {
    display: flex;
    gap: 6px;
}

.mockup-window-controls .control {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    display: inline-block;
}

.mockup-window-controls .close { background-color: var(--color-danger); }
.mockup-window-controls .minimize { background-color: var(--color-warning); }
.mockup-window-controls .expand { background-color: var(--color-success); }

.mockup-title {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.mockup-sync-status {
    font-family: var(--font-sans);
    font-size: 0.72rem;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.sync-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.sync-dot.green {
    background-color: var(--color-success);
    box-shadow: 0 0 8px var(--color-success);
}

/* Mockup Body */
.mockup-body {
    display: flex;
    height: 380px;
}

/* Sidebar */
.mockup-sidebar {
    width: 160px;
    background: rgba(8, 12, 20, 0.9);
    border-right: 1px solid var(--color-border);
    padding: 1.25rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0.75rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.sidebar-item:hover {
    background: rgba(255, 255, 255, 0.03);
    color: var(--color-text-primary);
}

.sidebar-item.active {
    background: rgba(0, 245, 212, 0.08);
    color: var(--color-teal);
    border-left: 2px solid var(--color-teal);
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
}

.sidebar-icon {
    width: 16px;
    height: 16px;
}

.sidebar-balance-box {
    margin-top: auto;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    padding: 0.75rem;
}

.balance-title {
    font-size: 0.62rem;
    color: var(--color-text-muted);
    letter-spacing: 0.5px;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.balance-amount {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--color-text-primary);
}

.balance-amount .unit {
    color: var(--color-teal);
    font-size: 0.75rem;
}

/* Main Area */
.mockup-main {
    flex: 1;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
}

.mockup-tabs {
    display: flex;
    gap: 1rem;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
}

.mockup-tab {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    position: relative;
}

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

.mockup-tab.active::after {
    content: '';
    position: absolute;
    bottom: -9px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-teal);
    box-shadow: 0 0 8px var(--color-teal);
}

.mockup-tab-content {
    flex: 1;
    overflow-y: auto;
}

/* Portfolio List Tab Content */
.portfolio-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.portfolio-header, .portfolio-row {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    font-size: 0.75rem;
    padding: 0.5rem 0.75rem;
}

.portfolio-header {
    color: var(--color-text-muted);
    font-weight: 600;
    border-bottom: 1px solid var(--color-border);
}

.portfolio-row {
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    align-items: center;
    transition: var(--transition-fast);
}

.portfolio-row:hover {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.15);
}

.domain-name {
    font-family: var(--font-mono);
    color: var(--color-text-primary);
    font-weight: 500;
}

.status-badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 100px;
    font-size: 0.65rem;
    font-weight: 600;
    width: fit-content;
}

.status-badge.active {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-badge.warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.status-badge.locked {
    background: rgba(239, 68, 110, 0.1);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 110, 0.2);
}

.time-left {
    color: var(--color-text-secondary);
}

.mockup-footer {
    margin-top: auto;
    border-top: 1px solid var(--color-border);
    padding-top: 1rem;
}

.bulk-renewal-alert {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--border-radius-sm);
    padding: 0.5rem 0.75rem;
    font-size: 0.7rem;
    color: var(--color-text-secondary);
}

.bulk-renewal-alert strong {
    color: var(--color-text-primary);
}

/* ==========================================================================
   MIGRATION & COMPARISON SECTION
   ========================================================================== */
.migration-section {
    padding: 6rem 0;
    background-color: var(--color-bg-dark);
    position: relative;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.section-header {
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2rem;
    margin-bottom: 1rem;
    font-weight: 800;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.5rem;
    }
}

.section-description {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 720px;
    margin: 0 auto;
}

.comparison-table-wrapper {
    overflow-x: auto;
    box-shadow: var(--shadow-md);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-bg-card);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    min-width: 700px;
}

.comparison-table th, .comparison-table td {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-text-primary);
    background: rgba(8, 12, 20, 0.8);
    font-size: 0.95rem;
}

.comparison-table tbody tr:last-child td {
    border-bottom: none;
}

.comparison-table tr:hover {
    background: rgba(255, 255, 255, 0.01);
}

.feature-title {
    font-weight: 600;
    color: var(--color-text-primary);
}

.loss {
    color: var(--color-text-muted);
}

.gain {
    color: var(--color-teal);
    font-weight: 500;
}

.highlight-col {
    background: rgba(0, 245, 212, 0.02);
    border-left: 1px solid rgba(0, 245, 212, 0.1);
    border-right: 1px solid rgba(0, 245, 212, 0.1);
}

.comparison-table td.highlight-col {
    background: rgba(0, 245, 212, 0.01);
    border-left: 1px solid rgba(0, 245, 212, 0.08);
    border-right: 1px solid rgba(0, 245, 212, 0.08);
    font-weight: 500;
}

/* ==========================================================================
   FEATURE GRID SECTION
   ========================================================================== */
.features-section {
    padding: 6rem 0;
    position: relative;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 576px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 2.5rem 2rem;
    transition: all var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-5px);
    background: var(--color-bg-card-hover);
    border-color: rgba(0, 245, 212, 0.3);
    box-shadow: var(--shadow-glow-teal);
}

.feature-icon-wrapper {
    width: 48px;
    height: 48px;
    background: rgba(0, 245, 212, 0.08);
    border: 1px solid rgba(0, 245, 212, 0.2);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-teal);
    margin-bottom: 1.5rem;
    transition: var(--transition-fast);
}

.feature-card:hover .feature-icon-wrapper {
    background: var(--color-teal);
    color: var(--color-bg-deep);
    box-shadow: 0 0 15px var(--color-teal);
}

.feature-icon {
    width: 24px;
    height: 24px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.feature-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ==========================================================================
   FEE & COST OPTIMIZER SECTION
   ========================================================================== */
.optimizer-section {
    padding: 6rem 0;
    background-color: var(--color-bg-dark);
    position: relative;
    overflow: hidden;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.optimizer-glow {
    position: absolute;
    right: -10%;
    bottom: -10%;
    width: 50%;
    height: 50%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.05) 0%, rgba(0,0,0,0) 70%);
    pointer-events: none;
}

.accent-title {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--color-indigo);
    letter-spacing: 1.5px;
    margin-bottom: 1rem;
}

.optimizer-features {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-top: 3rem;
}

.opt-feature {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.opt-badge {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.75rem;
    padding: 0.35rem 0.75rem;
    border-radius: 100px;
    text-align: center;
    min-width: 65px;
}

.opt-badge.eco {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.opt-badge.bulk {
    background: rgba(0, 245, 212, 0.1);
    color: var(--color-teal);
    border: 1px solid rgba(0, 245, 212, 0.2);
}

.opt-badge.filter {
    background: rgba(99, 102, 241, 0.1);
    color: var(--color-indigo);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.opt-text h4 {
    font-size: 1.1rem;
    margin-bottom: 0.35rem;
}

.opt-text p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

/* Calculator Card */
.calculator-card {
    background: var(--color-bg-card);
    border: 1px solid rgba(0, 245, 212, 0.15);
    border-radius: var(--border-radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-md), var(--shadow-glow-teal);
    position: relative;
    z-index: 2;
}

.calculator-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.calc-intro {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
}

.calc-group {
    margin-bottom: 1.75rem;
}

.calc-group label {
    display: block;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 0.75rem;
}

.calc-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.calc-label-row label {
    margin-bottom: 0;
}

.calc-val-display {
    font-family: var(--font-mono);
    color: var(--color-teal);
    font-weight: 700;
    font-size: 1.15rem;
}

/* Slider Customization */
.slider {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    margin-bottom: 0.5rem;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-teal);
    cursor: pointer;
    box-shadow: 0 0 10px var(--color-teal);
    transition: transform var(--transition-fast);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border: none;
    border-radius: 50%;
    background: var(--color-teal);
    cursor: pointer;
    box-shadow: 0 0 10px var(--color-teal);
    transition: transform var(--transition-fast);
}

.slider::-moz-range-thumb:hover {
    transform: scale(1.2);
}

.slider-ticks {
    display: flex;
    justify-content: space-between;
    padding: 0 2px;
    font-size: 0.7rem;
    color: var(--color-text-muted);
}

/* Toggle Group */
.calc-toggle-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 4px;
}

.calc-toggle-btn {
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.85rem;
    padding: 0.6rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.calc-toggle-btn.active {
    background: var(--color-bg-card-hover);
    color: var(--color-teal);
    border: 1px solid rgba(0, 245, 212, 0.25);
    box-shadow: var(--shadow-glow-teal);
}

/* Select */
.calc-select {
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 0.75rem 1rem;
    color: var(--color-text-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    outline: none;
    cursor: pointer;
}

.calc-select:focus {
    border-color: var(--color-teal);
}

/* Results Display */
.calc-results {
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--border-radius-md);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--color-border);
}

.result-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
}

.result-row:last-child {
    margin-bottom: 0;
}

.result-label {
    color: var(--color-text-secondary);
}

.result-value {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--color-text-primary);
}

.result-value.positive {
    color: var(--color-success);
    text-shadow: 0 0 8px rgba(16, 185, 129, 0.2);
}

.highlight-row {
    border-top: 1px dashed var(--color-border);
    border-bottom: 1px dashed var(--color-border);
    padding: 0.75rem 0;
    margin: 0.75rem 0;
}

.highlight-row .result-label {
    font-weight: 700;
    color: var(--color-text-primary);
}

.highlight-row .result-value {
    font-size: 1.25rem;
    font-weight: 800;
}

.calc-note {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    line-height: 1.4;
}

/* ==========================================================================
   SECURITY & VERIFICATION SECTION
   ========================================================================== */
.security-section {
    padding: 6rem 0;
}

.security-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-top: 3rem;
}

@media (min-width: 992px) {
    .security-layout {
        grid-template-columns: 1fr 1.1fr;
    }
}

.security-steps {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.step-card {
    display: flex;
    gap: 1.5rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 1.5rem;
    align-items: center;
}

.step-num {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--color-indigo);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.25rem;
}

.step-content h4 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.step-content p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* Terminal Styles */
.terminal-container {
    background: #05080e;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    height: 320px;
}

.terminal-header {
    display: flex;
    align-items: center;
    background: #090e18;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-border);
}

.terminal-buttons {
    display: flex;
    gap: 6px;
}

.t-btn {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.t-btn.red { background-color: var(--color-danger); }
.t-btn.yellow { background-color: var(--color-warning); }
.t-btn.green { background-color: var(--color-success); }

.terminal-tabs {
    display: flex;
    gap: 0.5rem;
    margin-left: 1.5rem;
}

.terminal-tab {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.25rem 0.6rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.terminal-tab.active {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-teal);
}

.terminal-body {
    flex: 1;
    padding: 1.25rem;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.5;
    color: #e2e8f0;
}

.terminal-code {
    display: none;
}

.terminal-code.active {
    display: block;
}

.terminal-code span.comment {
    color: #475569;
}

.terminal-footer {
    padding: 0.75rem 1.25rem;
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
    background: #090e18;
}

.btn-copy {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.4rem 0.8rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
}

.btn-copy:hover {
    background: rgba(255, 255, 255, 0.03);
    color: var(--color-text-primary);
    border-color: var(--color-border-hover);
}

.copy-icon {
    width: 14px;
    height: 14px;
}

/* ==========================================================================
   DOWNLOAD SECTION
   ========================================================================== */
.download-section {
    padding: 6rem 0;
    background-color: var(--color-bg-dark);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.download-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 3rem;
}

@media (min-width: 768px) {
    .download-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.download-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 2.5rem 2rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    transition: all var(--transition-normal);
}

.download-card:hover {
    transform: translateY(-5px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-glow-indigo);
}

/* Platform Detection Highlight Class */
.download-card.platform-match {
    border-color: var(--color-teal);
    box-shadow: var(--shadow-glow-teal);
    position: relative;
}

.download-card.platform-match::before {
    content: 'RECOMMENDED FOR YOUR OS';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-teal);
    color: var(--color-bg-deep);
    font-family: var(--font-heading);
    font-size: 0.65rem;
    font-weight: 800;
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
    letter-spacing: 0.5px;
}

.platform-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    color: var(--color-text-secondary);
    transition: var(--transition-fast);
}

.download-card:hover .platform-icon {
    color: var(--color-text-primary);
}

.download-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.download-meta {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 2rem;
}

.download-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: auto;
}

.brew-command {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
    text-align: left;
}

.brew-label {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}

.brew-command code {
    display: block;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--color-border);
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-primary);
    word-break: break-all;
}

/* ==========================================================================
   FOOTER SECTION
   ========================================================================== */
.footer {
    background-color: var(--color-bg-deep);
    padding: 5rem 0 2.5rem;
    font-size: 0.9rem;
    border-top: 1px solid var(--color-border);
}

.footer-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

@media (min-width: 768px) {
    .footer-container {
        grid-template-columns: 1.2fr 2fr;
    }
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

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

.footer-tagline {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.footer-links-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

@media (min-width: 576px) {
    .footer-links-group {
        grid-template-columns: repeat(3, 1fr);
    }
}

.footer-links-col {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links-col h4 {
    font-size: 0.95rem;
    color: var(--color-text-primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.footer-links-col a {
    color: var(--color-text-secondary);
}

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

.license-info {
    color: var(--color-text-muted);
    font-size: 0.8rem;
    line-height: 1.5;
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: 2.5rem;
}

.footer-bottom p {
    color: var(--color-text-muted);
    font-size: 0.8rem;
}