/* ========================================
   CSS Custom Properties (Design Tokens)
   ======================================== */
:root {
    /* Colors */
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #111111;
    --color-bg-tertiary: #1a1a1a;
    --color-bg-card: #151515;
    --color-bg-card-hover: #1f1f1f;

    --color-text-primary: #ffffff;
    --color-text-secondary: #a0a0a0;
    --color-text-muted: #666666;

    --color-accent-primary: #00d4ff;
    --color-accent-secondary: #7c3aed;
    --color-accent-gradient: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);

    --color-gold: #ffd700;
    --color-silver: #c0c0c0;
    --color-bronze: #cd7f32;

    --color-critical: #ff3366;
    --color-high: #ff6b6b;
    --color-medium: #ffa500;
    --color-low: #4ade80;

    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(255, 255, 255, 0.15);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing */
    --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;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --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);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.3);

    /* Layout */
    --container-max: 1200px;
    --nav-height: 70px;
}

/* ========================================
   Reset & Base Styles
   ======================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ========================================
   Container
   ======================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(10, 10, 10, 0.95);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--color-accent-primary);
    transition: all var(--transition-base);
}

.nav-logo:hover .logo-avatar {
    border-color: var(--color-accent-secondary);
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.4);
}

/* Hero Avatar */
.hero-avatar {
    margin-bottom: var(--spacing-xl);
}

.profile-image {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid transparent;
    background: linear-gradient(var(--color-bg-primary), var(--color-bg-primary)) padding-box,
        var(--color-accent-gradient) border-box;
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.3);
    animation: avatar-glow 3s ease-in-out infinite;
}

@keyframes avatar-glow {

    0%,
    100% {
        box-shadow: 0 0 40px rgba(0, 212, 255, 0.3);
    }

    50% {
        box-shadow: 0 0 60px rgba(0, 212, 255, 0.5), 0 0 80px rgba(124, 58, 237, 0.3);
    }
}

/* Footer Avatar */
.footer-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--color-border);
}

/* Logo Badge */
.logo-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.65rem;
    font-weight: 600;
    padding: 2px 8px;
    background: var(--color-accent-gradient);
    color: var(--color-bg-primary);
    border-radius: var(--radius-full);
    margin-left: var(--spacing-xs);
}

/* Footer Badge */
.footer-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.7rem;
    font-weight: 500;
    padding: 2px 8px;
    background: rgba(0, 212, 255, 0.15);
    color: var(--color-accent-primary);
    border-radius: var(--radius-full);
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.brand-logo {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    object-fit: contain;
}

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

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

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

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-base);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: calc(var(--nav-height) + var(--spacing-3xl)) var(--spacing-xl) var(--spacing-3xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-glow {
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(ellipse, rgba(0, 212, 255, 0.15) 0%, rgba(124, 58, 237, 0.1) 40%, transparent 70%);
    filter: blur(60px);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-accent-primary);
    margin-bottom: var(--spacing-xl);
    animation: pulse 2s ease-in-out infinite;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent-primary);
    border-radius: 50%;
    animation: blink 1.5s ease-in-out infinite;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }
}

@keyframes pulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(0, 212, 255, 0.2);
    }

    50% {
        box-shadow: 0 0 20px 5px rgba(0, 212, 255, 0.1);
    }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.title-line {
    display: block;
}

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

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
    line-height: 1.7;
}

.highlight-link {
    color: var(--color-accent-primary);
    font-weight: 600;
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-fast);
}

.highlight-link:hover {
    border-color: var(--color-accent-primary);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

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

.btn-primary {
    background: var(--color-accent-gradient);
    color: var(--color-bg-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

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

.btn-secondary:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-border-hover);
}

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

.btn-outline:hover {
    background: var(--color-bg-tertiary);
    border-color: var(--color-accent-primary);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s ease-in-out infinite;
}

.scroll-arrow {
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-full);
    position: relative;
}

.scroll-arrow::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--color-accent-primary);
    border-radius: var(--radius-full);
    animation: scroll-down 2s ease-in-out infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

@keyframes scroll-down {
    0% {
        top: 8px;
        opacity: 1;
    }

    100% {
        top: 24px;
        opacity: 0;
    }
}

/* ========================================
   Featured Banner
   ======================================== */
.featured-banner {
    background: linear-gradient(90deg, rgba(0, 212, 255, 0.1) 0%, rgba(124, 58, 237, 0.1) 100%);
    border-top: 1px solid rgba(0, 212, 255, 0.2);
    border-bottom: 1px solid rgba(124, 58, 237, 0.2);
    padding: var(--spacing-md) 0;
    overflow: hidden;
}

.banner-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    transition: opacity var(--transition-base);
}

.banner-content:hover {
    opacity: 0.8;
}

.banner-badge {
    background: var(--color-accent-gradient);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-bg-primary);
}

.banner-text {
    font-weight: 500;
    color: var(--color-text-primary);
}

.banner-arrow {
    color: var(--color-accent-primary);
    font-size: 1.25rem;
    transition: transform var(--transition-fast);
}

.banner-content:hover .banner-arrow {
    transform: translateX(5px);
}

/* ========================================
   Section Styles
   ======================================== */
.section {
    padding: var(--spacing-4xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   About Section
   ======================================== */
.about-section {
    background: var(--color-bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.about-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    transition: all var(--transition-base);
}

.about-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
}

.about-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
}

.about-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.about-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.chain-logos {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.chain-logo {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    object-fit: contain;
    opacity: 0.7;
    transition: all var(--transition-fast);
}

.chain-logo:hover {
    opacity: 1;
    transform: scale(1.1);
}

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

.skills-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text-secondary);
}

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

.skill-tag {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.skill-tag:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
}

/* ========================================
   Achievements Section
   ======================================== */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.achievement-card {
    display: flex;
    gap: var(--spacing-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.achievement-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
}

.achievement-card.gold {
    border-left: 3px solid var(--color-gold);
}

.achievement-card.silver {
    border-left: 3px solid var(--color-silver);
}

.achievement-card.bronze {
    border-left: 3px solid var(--color-bronze);
}

.achievement-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.achievement-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.achievement-rank {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-accent-primary);
    margin-bottom: var(--spacing-sm);
}

.achievement-desc {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
}

.achievement-platform {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* ========================================
   Portfolio Section
   ======================================== */
.portfolio-section {
    background: var(--color-bg-secondary);
}

.portfolio-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.tab-btn {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.tab-btn:hover {
    color: var(--color-text-primary);
    border-color: var(--color-border-hover);
}

.tab-btn.active {
    background: var(--color-accent-gradient);
    color: var(--color-bg-primary);
    border-color: transparent;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.audit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.audit-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
}

.audit-card:hover {
    border-color: var(--color-border-hover);
    background: var(--color-bg-card-hover);
}

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

.audit-name {
    font-weight: 600;
    font-size: 1rem;
}

.audit-date {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.audit-type {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.audit-platform-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    margin-top: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: rgba(0, 212, 255, 0.15);
    color: var(--color-accent-primary);
    border: 1px solid rgba(0, 212, 255, 0.3);
}

/* Private Audits */
.private-audit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.private-audit-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.private-audit-card:hover {
    border-color: var(--color-border-hover);
}

.private-audit-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.private-audit-name {
    font-weight: 600;
    font-size: 1.1rem;
}

.private-audit-date {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.private-audit-type {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.findings-badge {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.finding {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.finding.critical {
    background: rgba(255, 51, 102, 0.15);
    color: var(--color-critical);
}

.finding.high {
    background: rgba(255, 107, 107, 0.15);
    color: var(--color-high);
}

.finding.medium {
    background: rgba(255, 165, 0, 0.15);
    color: var(--color-medium);
}

.finding.low {
    background: rgba(74, 222, 128, 0.15);
    color: var(--color-low);
}

.private-text {
    color: var(--color-text-muted);
    font-style: italic;
}

/* ========================================
   Research Section
   ======================================== */
.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.research-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    display: block;
}

.research-card:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-4px);
}

.research-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-lg);
}

.research-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.research-card p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.research-link {
    color: var(--color-accent-primary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* ========================================
   Projects Section
   ======================================== */
.projects-section {
    background: var(--color-bg-secondary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.project-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    display: block;
    position: relative;
}

.project-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
}

.project-card.featured {
    border-color: var(--color-accent-primary);
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.05) 0%, rgba(124, 58, 237, 0.05) 100%);
}

.project-card.building {
    border-style: dashed;
}

.project-badge {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent-primary);
}

.project-card h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.project-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.project-tech span {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

/* ========================================
   Platforms Section
   ======================================== */
.platforms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.platform-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-base);
    display: block;
}

.platform-card:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-4px);
}

.platform-logo {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-md);
}

.platform-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0;
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(124, 58, 237, 0.1) 100%);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-2xl);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-2xl) 0;
    position: relative;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: 1.25rem;
}

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

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

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

.footer-copyright {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 45px;
    height: 45px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 100;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
    border-color: var(--color-accent-primary);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--color-bg-primary);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

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

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero-stats {
        gap: var(--spacing-xl);
    }

    .stat-number {
        font-size: 2rem;
    }

    .achievements-grid {
        grid-template-columns: 1fr;
    }

    .portfolio-tabs {
        flex-direction: column;
    }

    .tab-btn {
        width: 100%;
    }

    .cta-buttons {
        flex-direction: column;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .section {
        padding: var(--spacing-3xl) 0;
    }

    .hero-title {
        font-size: 2rem;
    }

    .stat-item {
        flex: 1 1 45%;
    }

    .achievement-card {
        flex-direction: column;
        text-align: center;
    }

    .audit-grid,
    .private-audit-grid {
        grid-template-columns: 1fr;
    }
}