/* CSS Variables for Cyber Sentinel Design System */
:root {
    /* Colors */
    --color-bg-base: #0f1321;
    --color-bg-lowest: #0a0d1c;
    --color-bg-low: #171b2a;
    --color-bg-container: #1b1f2e;
    --color-bg-container-high: #262939;
    --color-bg-container-highest: #303444;
    --color-bg-surface-bright: #353849;
    
    --color-text-primary: #dfe1f6;
    --color-text-muted: #b9caca;
    --color-text-dark: #002021;
    
    --color-primary: #63f7ff;         /* Neon Cyan */
    --color-primary-dark: #004f53;
    --color-secondary: #79ff5b;       /* Neon Green */
    --color-secondary-dark: #095300;
    --color-tertiary: #dcb8ff;        /* Neon Purple */
    --color-tertiary-dark: #6700b5;
    
    --color-border: rgba(99, 247, 255, 0.1);
    --color-border-hover: rgba(99, 247, 255, 0.4);
    --color-outline: rgba(132, 148, 149, 0.3);
    
    /* Typography */
    --font-headline: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-code: 'JetBrains Mono', monospace;
    
    /* Borders & Roundness */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Spacing Scale (8px base) */
    --unit: 8px;
    --gutter: 24px;
    --container-max: 1280px;
    --section-gap: 120px;
}

/* Reset and Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    background-color: var(--color-bg-base);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.5;
}

body {
    background-color: var(--color-bg-base);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Scrollbar Styles */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg-lowest);
}
::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
    box-shadow: 0 0 10px var(--color-primary);
}

/* Typography Presets */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-headline);
    font-weight: 600;
}

p {
    font-family: var(--font-body);
    color: var(--color-text-muted);
}

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

/* Custom Selection Highlight */
.selection-accent ::selection {
    background-color: rgba(99, 247, 255, 0.2);
    color: var(--color-primary);
}

/* Container Utility */
.section-container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

/* Button Component */
.btn {
    font-family: var(--font-code);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-dark);
}

.btn-primary:hover {
    box-shadow: 0 0 20px rgba(99, 247, 255, 0.6);
    transform: translateY(-2px);
}

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

.btn-outline:hover {
    background-color: rgba(99, 247, 255, 0.1);
    box-shadow: inset 0 0 10px rgba(99, 247, 255, 0.2);
    transform: translateY(-2px);
}

.github-circle-btn {
    position: relative;
    isolation: isolate;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid rgba(99, 247, 255, 0.35);
    background: linear-gradient(145deg, rgba(99, 247, 255, 0.12), rgba(99, 247, 255, 0.02));
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 0 12px rgba(99, 247, 255, 0.08), 0 0 0 rgba(99, 247, 255, 0);
    transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.28s ease, background-color 0.28s ease, box-shadow 0.28s ease;
    padding: 0;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.github-circle-btn::before {
    content: '';
    position: absolute;
    inset: -5px;
    z-index: -1;
    border: 1px solid rgba(99, 247, 255, 0.45);
    border-radius: inherit;
    opacity: 0;
    transform: scale(0.82);
    pointer-events: none;
}

.github-circle-btn svg {
    width: 27px;
    height: 27px;
    flex: 0 0 27px;
    overflow: visible;
    transition: filter 0.28s ease, transform 0.28s cubic-bezier(0.22, 1, 0.36, 1);
}

.github-outer-ring {
    stroke: var(--color-primary);
    stroke-width: 1.5px;
    fill: none;
    transform-box: fill-box;
    transform-origin: center;
    transition: stroke 0.28s ease, stroke-width 0.28s ease;
}

.github-inner-circle {
    fill: var(--color-primary);
    transform-box: fill-box;
    transform-origin: center;
    transition: fill 0.28s ease, transform 0.28s ease;
}

.github-octocat {
    fill: var(--color-bg-base);
    transform-box: fill-box;
    transform-origin: center;
    transition: fill 0.28s ease, transform 0.28s ease;
}

.github-label {
    position: absolute;
    top: 50%;
    right: calc(100% + 12px);
    padding: 6px 10px;
    border: 1px solid var(--color-border-hover);
    border-radius: var(--radius-sm);
    background: rgba(10, 13, 28, 0.96);
    color: var(--color-text-primary);
    box-shadow: 0 8px 24px rgba(10, 13, 28, 0.45);
    font-family: var(--font-code);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    line-height: 1;
    text-transform: uppercase;
    white-space: nowrap;
    opacity: 0;
    transform: translate(8px, -50%);
    transition: opacity 0.2s ease, transform 0.25s cubic-bezier(0.22, 1, 0.36, 1);
    pointer-events: none;
}

.mobile-menu .github-octocat {
    fill: var(--color-bg-lowest);
}

@media (hover: hover) and (pointer: fine) {
    .github-circle-btn:hover {
        border-color: var(--color-primary);
        background: rgba(99, 247, 255, 0.16);
        box-shadow: inset 0 0 16px rgba(99, 247, 255, 0.14), 0 8px 24px rgba(99, 247, 255, 0.2);
        transform: translateY(-3px) scale(1.04);
    }
}

.github-circle-btn:is(:hover, :focus-visible)::before {
    animation: github-signal 1.8s ease-out infinite;
}

.github-circle-btn:is(:hover, :focus-visible) svg {
    filter: drop-shadow(0 0 7px rgba(99, 247, 255, 0.85));
    transform: scale(1.05);
}

.github-circle-btn:is(:hover, :focus-visible) .github-outer-ring {
    stroke-width: 1.8px;
    stroke-dasharray: 42 8;
    animation: github-orbit 2.2s linear infinite;
}

.github-circle-btn:is(:hover, :focus-visible) .github-inner-circle {
    fill: var(--color-text-primary);
    transform: scale(0.95);
}

.github-circle-btn:is(:hover, :focus-visible) .github-octocat {
    transform: scale(1.06);
}

.github-circle-btn:is(:hover, :focus-visible) .github-label {
    opacity: 1;
    transform: translate(0, -50%);
}

.github-circle-btn:focus-visible {
    outline: 2px solid var(--color-secondary);
    outline-offset: 4px;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 5px rgba(121, 255, 91, 0.08), 0 8px 24px rgba(99, 247, 255, 0.2);
    transform: translateY(-2px);
}

.github-circle-btn:active {
    transform: translateY(0) scale(0.96);
}

@keyframes github-orbit {
    to { transform: rotate(360deg); }
}

@keyframes github-signal {
    0% {
        opacity: 0.55;
        transform: scale(0.84);
    }
    75%, 100% {
        opacity: 0;
        transform: scale(1.22);
    }
}

.mobile-menu .github-circle-btn {
    width: min(100%, 210px);
    height: 46px;
    margin: 20px auto 0;
    padding: 0 18px;
    gap: 10px;
    border-radius: var(--radius-full);
}

.mobile-menu .github-circle-btn svg {
    width: 25px;
    height: 25px;
    flex-basis: 25px;
}

.mobile-menu .github-label {
    position: static;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--color-primary);
    box-shadow: none;
    font-size: 12px;
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    .github-circle-btn,
    .github-circle-btn::before,
    .github-circle-btn svg,
    .github-outer-ring,
    .github-inner-circle,
    .github-octocat,
    .github-label {
        animation: none !important;
        transition-duration: 0.01ms;
    }

    .github-circle-btn:is(:hover, :focus-visible) {
        transform: none;
    }
}

/* Glassmorphism Cards */
.glass-card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.glass-card:hover {
    border-color: var(--color-border-hover);
    box-shadow: inset 0 0 20px rgba(99, 247, 255, 0.05), 0 0 20px rgba(99, 247, 255, 0.15);
    transform: translateY(-4px);
}

/* Navigation Bar */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background-color: rgba(15, 19, 33, 0.6);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-b: 1px solid rgba(99, 247, 255, 0.1);
    transition: all 0.3s ease;
}

#navbar.scrolled {
    background-color: rgba(15, 19, 33, 0.9);
    box-shadow: 0 10px 30px -10px rgba(10, 13, 28, 0.5);
}

.nav-container {
    max-width: var(--container-max);
    height: 72px;
    margin: 0 auto;
    padding: 0 var(--gutter);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-headline);
    font-size: 24px;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

.nav-logo:hover {
    opacity: 0.8;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-family: var(--font-code);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    position: relative;
    padding: 6px 0;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
    box-shadow: 0 0 8px var(--color-primary);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-primary);
    cursor: pointer;
}

.menu-toggle span {
    font-size: 32px;
}

/* Mobile Dropdown Menu */
.mobile-menu {
    display: none;
    flex-direction: column;
    padding: 20px;
    background-color: rgba(10, 13, 28, 0.95);
    border-top: 1px solid var(--color-border);
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    backdrop-filter: blur(20px);
}

.mobile-menu.open {
    display: flex;
}

.mobile-link {
    font-family: var(--font-code);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    padding: 12px 0;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

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

.mobile-cta {
    margin-top: 16px;
    align-self: center;
}

/* Hero Section */
.hero-section {
    position: relative;
    min-h: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
}

.shader-container {
    position: absolute;
    inset: 0;
    z-index: 0;
    opacity: 0.35;
}

#shader-canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: radial-gradient(circle at center, transparent 0%, var(--color-bg-base) 100%);
}

.hero-container {
    position: relative;
    z-index: 2;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--gutter);
    width: 100%;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: center;
}

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

.system-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    border: 1px solid rgba(99, 247, 255, 0.2);
    background: rgba(99, 247, 255, 0.05);
    font-family: var(--font-code);
    font-size: 12px;
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 0.1em;
    margin-bottom: 24px;
}

.status-pulse {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-primary);
    animation: status-pulse-anim 1.5s infinite;
}

@keyframes status-pulse-anim {
    0% {
        transform: scale(0.9);
        opacity: 1;
    }
    50% {
        transform: scale(1.3);
        opacity: 0.4;
    }
    100% {
        transform: scale(0.9);
        opacity: 1;
    }
}

.hero-title {
    font-size: 64px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
    color: var(--color-text-primary);
    margin-bottom: 8px;
}

.hero-subtitle {
    font-size: 36px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 24px;
    height: 54px;
}

.typewriter-text::after {
    content: '|';
    animation: blink 1s step-start infinite;
    color: var(--color-primary);
}

@keyframes blink {
    50% { opacity: 0; }
}

.hero-desc {
    font-size: 18px;
    line-height: 1.6;
    max-width: 580px;
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

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

.circle-frame {
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(99, 247, 255, 0.5), rgba(99, 247, 255, 0.1));
    padding: 3px;
    position: relative;
    animation: pulse-frame 4s ease-in-out infinite;
    display: flex;
    align-items: center;
    justify-content: center;
}

@keyframes pulse-frame {
    0% { box-shadow: 0 0 10px rgba(99, 247, 255, 0.2); }
    50% { box-shadow: 0 0 35px rgba(99, 247, 255, 0.5); }
    100% { box-shadow: 0 0 10px rgba(99, 247, 255, 0.2); }
}

.circle-inner {
    border-radius: 50%;
    background: var(--color-bg-base);
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: relative;
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.8;
    filter: grayscale(100%);
    mix-blend-mode: luminosity;
    transition: all 0.5s ease;
}

.circle-inner:hover .profile-image {
    opacity: 1;
    filter: grayscale(0%);
    mix-blend-mode: normal;
}

.image-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(99, 247, 255, 0.1);
    mix-blend-mode: overlay;
    pointer-events: none;
}

.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0.6;
    animation: bounce 2s infinite;
    z-index: 2;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translate(-50%, 0);
    }
    40% {
        transform: translate(-50%, -10px);
    }
    60% {
        transform: translate(-50%, -5px);
    }
}

.scroll-text {
    font-family: var(--font-code);
    font-size: 12px;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
}

.scroll-icon {
    color: var(--color-primary);
}

/* Sections Global Styling */
section {
    padding: var(--section-gap) 0;
}

.section-header {
    margin-bottom: 64px;
}

.section-title {
    font-size: 40px;
    font-weight: 600;
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.section-number {
    font-family: var(--font-code);
    font-size: 16px;
    color: var(--color-primary);
    opacity: 0.5;
}

.title-line {
    height: 1px;
    width: 200px;
    background: linear-gradient(to right, rgba(99, 247, 255, 0.5), transparent);
}

/* About Section */
.about-section {
    position: relative;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-text p {
    font-size: 18px;
    margin-bottom: 24px;
    line-height: 1.6;
}

.about-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.about-cards .card {
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.about-cards .card span {
    font-size: 32px;
    margin-bottom: 16px;
    transition: transform 0.3s ease;
}

.about-cards .card:hover span {
    transform: scale(1.1);
}

.about-cards .card h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.about-cards .card p {
    font-size: 14px;
    line-height: 1.5;
}

.icon-cyan {
    color: var(--color-primary);
}

.icon-green {
    color: var(--color-secondary);
}

/* Education Section */
.education-section {
    background: rgba(23, 27, 42, 0.3);
    border-top: 1px solid rgba(99, 247, 255, 0.05);
    border-bottom: 1px solid rgba(99, 247, 255, 0.05);
}

.timeline-container {
    position: relative;
    max-width: 800px;
    padding-left: 48px;
}

.timeline-line {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: rgba(185, 202, 202, 0.2);
}

.timeline-node {
    position: relative;
}

.timeline-node::before {
    content: '';
    position: absolute;
    left: -48px;
    top: 36px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--color-primary);
    box-shadow: 0 0 15px var(--color-primary);
    transform: translateX(-50%);
    z-index: 1;
}

.node-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 16px;
}

.degree-title {
    font-size: 24px;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.major-title {
    font-size: 18px;
    color: var(--color-primary);
    font-weight: 500;
}

.expected-badge {
    font-family: var(--font-code);
    font-size: 12px;
    color: var(--color-text-muted);
    border: 1px solid rgba(185, 202, 202, 0.3);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.university-name {
    font-size: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.skill-card {
    padding: 32px;
    border-radius: var(--radius-xl);
}

.skill-category-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(99, 247, 255, 0.1);
    margin-bottom: 24px;
}

.skill-category-header h3 {
    font-size: 20px;
}

.skill-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.skill-badge {
    background-color: #070B14;
    border: 1px solid rgba(99, 247, 255, 0.2);
    border-radius: var(--radius-full);
    padding: 6px 16px;
    font-family: var(--font-code);
    font-size: 12px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-primary);
}

.badge-dot-dev {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--color-primary);
    box-shadow: 0 0 8px var(--color-primary);
}

.badge-dot-sec {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--color-secondary);
    box-shadow: 0 0 8px var(--color-secondary);
}

/* Projects Section */
.projects-section {
    background: rgba(23, 27, 42, 0.3);
    border-top: 1px solid rgba(99, 247, 255, 0.05);
    border-bottom: 1px solid rgba(99, 247, 255, 0.05);
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.project-card {
    display: flex;
    flex-direction: column;
    padding: 0;
    overflow: hidden;
    height: 100%;
}

.project-media {
    height: 200px;
    background-color: rgba(53, 56, 73, 0.5);
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid rgba(99, 247, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.media-placeholder {
    color: var(--color-primary);
    opacity: 0.5;
    transition: transform 0.5s ease;
}

.media-placeholder span {
    font-size: 64px;
}

.project-card:hover .media-placeholder {
    transform: scale(1.1);
}

.media-grid-pattern {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(99, 247, 255, 0.15) 1px, transparent 1px);
    background-size: 20px 20px;
    pointer-events: none;
}

.project-details {
    padding: 32px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.project-tag {
    font-family: var(--font-code);
    font-size: 10px;
    color: var(--color-primary);
    background: rgba(99, 247, 255, 0.1);
    border-radius: var(--radius-sm);
    padding: 4px 8px;
}

.project-details h3 {
    font-size: 24px;
    margin-bottom: 12px;
    transition: color 0.3s ease;
}

.project-card:hover .project-details h3 {
    color: var(--color-primary);
}

.project-details p {
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 24px;
    flex-grow: 1;
}

.project-links {
    display: flex;
    gap: 24px;
}

.project-link {
    font-family: var(--font-code);
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

.project-link span {
    font-size: 18px;
}



/* Contact Section */
.contact-section {
    background: var(--color-bg-base);
    border-top: 1px solid rgba(99, 247, 255, 0.05);
}

.contact-section .section-title {
    text-transform: uppercase;
}

.contact-intro {
    max-width: 700px;
    margin-bottom: 48px;
    color: var(--color-text-muted);
    font-size: 18px;
}

.contact-content {
    position: relative;
    overflow: hidden;
    width: 100%;
    padding: 48px;
    border-radius: var(--radius-xl);
    background: rgba(255, 255, 255, 0.035);
    border-color: rgba(99, 247, 255, 0.14);
}

.contact-content::before {
    content: '';
    position: absolute;
    top: -180px;
    right: -150px;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(99, 247, 255, 0.09), transparent 68%);
    pointer-events: none;
}

.contact-content > * {
    position: relative;
    z-index: 1;
}

.contact-content:hover {
    transform: none;
    border-color: rgba(99, 247, 255, 0.22);
    box-shadow: inset 0 0 24px rgba(99, 247, 255, 0.035), 0 0 24px rgba(99, 247, 255, 0.06);
}

.contact-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(340px, 1fr);
    gap: 48px;
    align-items: start;
}

.contact-form-column {
    min-width: 0;
    padding-right: 48px;
    border-right: 1px solid rgba(99, 247, 255, 0.12);
}

.contact-details {
    min-width: 0;
}

.contact-column-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 28px;
}

.contact-column-header > .material-symbols-outlined,
.contact-column-header > .contact-details-icon {
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    border: 1px solid rgba(99, 247, 255, 0.26);
    border-radius: 12px;
    background: rgba(99, 247, 255, 0.06);
    display: grid;
    place-items: center;
    color: var(--color-primary);
    font-size: 20px;
}

.contact-column-header h3 {
    margin-bottom: 3px;
    color: var(--color-text-primary);
    font-size: 20px;
}

.contact-column-header p {
    font-size: 14px;
    line-height: 1.45;
}

.contact-form {
    max-width: none;
    margin: 0;
    padding: 0;
}

.contact-form .form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.form-label {
    color: var(--color-text-primary);
    font-family: var(--font-code);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.form-label span {
    color: var(--color-primary);
}

.form-input {
    background-color: rgba(10, 13, 28, 0.8);
    border: 1px solid var(--color-outline);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    padding: 16px;
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.4;
    transition: border-color 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.form-input::placeholder {
    color: rgba(185, 202, 202, 0.55);
    opacity: 1;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: rgba(10, 13, 28, 0.95);
    box-shadow: inset 0 0 12px rgba(99, 247, 255, 0.08), 0 0 0 3px rgba(99, 247, 255, 0.08);
}

.form-input:not(:placeholder-shown):invalid:not(:focus) {
    border-color: rgba(255, 146, 146, 0.58);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-honeypot {
    position: absolute !important;
    left: -9999px !important;
    width: 1px !important;
    height: 1px !important;
    opacity: 0 !important;
    pointer-events: none !important;
}

.form-submit {
    width: 100%;
    min-height: 50px;
    padding: 16px;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.form-submit .material-symbols-outlined {
    font-size: 19px;
    transition: transform 0.25s ease;
}

.form-submit:hover .material-symbols-outlined {
    transform: translate(3px, -2px);
}

.form-submit:disabled {
    cursor: wait;
    opacity: 0.7;
}

.form-feedback {
    margin-top: 14px;
    padding: 12px 14px;
    border: 1px solid rgba(99, 247, 255, 0.16);
    border-radius: var(--radius-md);
    background: rgba(10, 13, 28, 0.55);
    color: var(--color-text-muted);
    font-family: var(--font-code);
    font-size: 12px;
    line-height: 1.5;
    text-align: center;
}

.form-feedback:empty {
    display: none;
}

.form-feedback.success {
    border-color: rgba(121, 255, 91, 0.28);
    background: rgba(121, 255, 91, 0.06);
    color: var(--color-secondary);
}

.form-feedback.error {
    border-color: rgba(255, 146, 146, 0.35);
    background: rgba(255, 146, 146, 0.06);
    color: #ffb4b4;
}

.contact-info-cards {
    display: grid;
    gap: 16px;
}

.info-card {
    position: relative;
    overflow: hidden;
    min-width: 0;
    min-height: 96px;
    padding: 20px;
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    background: rgba(10, 13, 28, 0.62);
    display: flex;
    align-items: center;
    gap: 20px;
    color: var(--color-text-primary);
    transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
}

.info-card::before {
    content: '';
    position: absolute;
    inset: 18px auto 18px 0;
    width: 2px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    opacity: 0;
    transform: scaleY(0.45);
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.info-card:hover {
    border-color: rgba(99, 247, 255, 0.24);
    background: rgba(10, 13, 28, 0.78);
    box-shadow: 0 10px 24px rgba(10, 13, 28, 0.22);
    transform: translateY(-2px);
}

.info-card:hover::before,
.info-card:focus-visible::before {
    opacity: 1;
    transform: scaleY(1);
}

.info-card-link:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 3px;
}

.info-icon {
    width: 52px;
    height: 52px;
    flex: 0 0 52px;
    border: 1px solid rgba(99, 247, 255, 0.32);
    border-radius: 50%;
    background: rgba(99, 247, 255, 0.035);
    display: grid;
    place-items: center;
    font-size: 21px;
    line-height: 1;
}

.contact-outline-icon {
    display: block;
    width: 22px;
    height: 22px;
    color: var(--color-primary);
}

.info-text {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.info-text h4 {
    font-family: var(--font-code);
    font-size: 12px;
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 0.14em;
    line-height: 1.2;
    text-transform: uppercase;
}

.info-text p {
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 500;
    overflow-wrap: anywhere;
}

.info-arrow {
    margin-left: auto;
    color: rgba(185, 202, 202, 0.55);
    font-size: 19px;
    transition: color 0.25s ease, transform 0.25s ease;
}

.info-card-link:hover .info-arrow,
.info-card-link:focus-visible .info-arrow {
    color: var(--color-primary);
    transform: translate(2px, -2px);
}

.social-links {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid rgba(99, 247, 255, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
}

.social-icon {
    position: relative;
    width: 44px;
    height: 44px;
    border: 1px solid transparent;
    border-radius: 50%;
    background: rgba(10, 13, 28, 0.72);
    display: grid;
    place-items: center;
    color: var(--color-text-muted);
    transition: color 0.25s ease, transform 0.25s cubic-bezier(0.22, 1, 0.36, 1), border-color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
}

.social-icon svg {
    width: 21px;
    height: 21px;
    fill: currentColor;
}

.social-icon:hover {
    color: var(--color-primary);
    border-color: rgba(99, 247, 255, 0.35);
    background: rgba(99, 247, 255, 0.09);
    box-shadow: 0 0 18px rgba(99, 247, 255, 0.14);
    transform: translateY(-3px);
}

.social-icon:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 3px;
}

.social-icon::after {
    content: attr(data-label);
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    padding: 5px 8px;
    border: 1px solid rgba(99, 247, 255, 0.18);
    border-radius: 6px;
    background: var(--color-bg-lowest);
    color: var(--color-text-primary);
    font-family: var(--font-code);
    font-size: 10px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, 4px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.social-icon:hover::after,
.social-icon:focus-visible::after {
    opacity: 1;
    transform: translate(-50%, 0);
}

/* Footer Section */
footer {
    width: 100%;
    padding: 64px 0;
    border-top: 1px solid var(--color-bg-container-highest);
    background-color: var(--color-bg-lowest);
}

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

.footer-logo {
    font-family: var(--font-headline);
    font-size: 20px;
    color: var(--color-primary);
    font-weight: 700;
}

.footer-copy {
    color: var(--color-text-muted);
    font-size: 14px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--color-text-muted);
    font-size: 14px;
}

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

/* Scroll Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }

/* Responsive Media Queries */
@media (max-width: 1024px) {
    :root {
        --section-gap: 80px;
    }
    
    .hero-container {
        grid-template-columns: 1.1fr 0.9fr;
        gap: 32px;
    }
    
    .hero-title {
        font-size: 48px;
    }
    
    .hero-subtitle {
        font-size: 28px;
        height: 42px;
    }
    
    .about-grid {
        gap: 32px;
    }
    
    .skills-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }
    
    .skills-grid > div:last-child {
        grid-column: span 2;
    }

    .contact-content {
        padding: 40px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-form-column {
        padding-right: 0;
        padding-bottom: 40px;
        border-right: 0;
        border-bottom: 1px solid rgba(99, 247, 255, 0.12);
    }

    .contact-info-cards {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .nav-links, .nav-cta {
        display: none;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 48px;
    }
    
    .hero-content {
        align-items: center;
    }
    
    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .about-cards {
        grid-template-columns: 1fr;
    }
    
    .node-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .expected-badge {
        align-self: flex-start;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .skills-grid > div:last-child {
        grid-column: span 1;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-section .section-title {
        gap: 12px;
        font-size: 32px;
    }

    .contact-section .section-subtitle {
        font-size: 16px !important;
    }

    .contact-intro {
        margin-bottom: 36px;
    }

    .contact-content {
        padding: 32px 24px;
    }

    .contact-form {
        padding: 0;
    }

    .contact-info-cards {
        grid-template-columns: 1fr;
    }

    .info-card {
        padding: 20px;
    }

    .social-links {
        margin-top: 40px;
        gap: 16px;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .contact-content {
        padding: 28px 18px;
    }

    .contact-column-header {
        align-items: flex-start;
        margin-bottom: 24px;
    }

    .contact-column-header > .material-symbols-outlined,
    .contact-column-header > .contact-details-icon {
        width: 38px;
        height: 38px;
        flex-basis: 38px;
        font-size: 18px;
    }

    .contact-column-header h3 {
        font-size: 18px;
    }

    .form-input {
        padding: 14px;
    }

    .info-card {
        min-height: 88px;
        padding: 16px;
        gap: 14px;
    }

    .info-icon {
        width: 46px;
        height: 46px;
        flex-basis: 46px;
    }

    .info-text p {
        font-size: 14px;
    }

    .social-links {
        gap: 12px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .contact-content,
    .form-input,
    .form-submit .material-symbols-outlined,
    .info-card,
    .info-card::before,
    .info-arrow,
    .social-icon,
    .social-icon::after {
        transition-duration: 0.01ms !important;
    }

    .info-card:hover,
    .form-submit:hover .material-symbols-outlined,
    .social-icon:hover {
        transform: none;
    }
}