@font-face {
    font-family: 'D2Coding';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_three@1.0/D2Coding.woff') format('woff');
    font-weight: normal;
    font-display: swap;
}

/* ========================
   CSS Variables
   ======================== */
:root {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --secondary-color: #8b5cf6;
    --accent-color: #06b6d4;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --border-radius: 16px;
    --border-radius-sm: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
}

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

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

body {
    font-family: 'D2Coding', monospace, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ========================
   Header & Navigation
   ======================== */
.header {
    position: sticky;
    top: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 1.25rem 0;
    transition: var(--transition);
}

.header.scrolled {
    padding: 0.875rem 0;
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
    transition: width 0.3s ease;
}

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

/* ========================
   About Section
   ======================== */
.about-section {
    padding: 8rem 0 6rem;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.about-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.about-content {
    display: flex;
    gap: 5rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.profile-image-wrapper {
    flex-shrink: 0;
    position: relative;
}

.profile-image-wrapper::before {
    content: '';
    position: absolute;
    inset: -10px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    opacity: 0.15;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.15;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.2;
    }
}

.profile-image {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: var(--shadow-xl);
    border: 6px solid white;
    position: relative;
    z-index: 1;
    transition: var(--transition);
}

.profile-image:hover {
    transform: scale(1.05);
}

.profile-info {
    flex: 1;
}

.profile-name {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.profile-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 2rem;
    display: inline-block;
    position: relative;
}

.profile-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), transparent);
    border-radius: 2px;
}

.profile-bio {
    font-size: 1.125rem;
    line-height: 1.9;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    white-space: pre-line;
}

.social-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.875rem 1.5rem;
    background-color: white;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.social-link:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-color: transparent;
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.social-link i {
    font-size: 1.25rem;
    transition: var(--transition);
}

.social-link:hover i {
    transform: scale(1.1);
}

/* ========================
   Portfolio Section
   ======================== */
.portfolio-section {
    padding: 7rem 0;
    background-color: var(--bg-primary);
}

.section-title {
    font-size: 2.75rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 4rem;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 2.5rem;
}

.portfolio-card {
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.portfolio-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.portfolio-card-content {
    padding: 2rem;
}

.portfolio-title {
    font-size: 1.625rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
    line-height: 1.3;
}

.portfolio-description {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.75rem;
}

.portfolio-video {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: var(--border-radius-sm);
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.portfolio-video:hover {
    box-shadow: var(--shadow-md);
}

.portfolio-images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.portfolio-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.portfolio-image:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.portfolio-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
    margin-bottom: 1.5rem;
}

.tag {
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    color: var(--primary-color);
    border-radius: 24px;
    font-size: 0.875rem;
    font-weight: 600;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.tag:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.portfolio-links {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.link-preview-card {
    display: flex;
    flex-direction: column;
    background-color: white;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
}

.link-preview-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.link-preview-screenshot {
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background-color: var(--bg-secondary);
    position: relative;
}

.link-preview-screenshot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.link-preview-info {
    padding: 1rem;
    background: linear-gradient(135deg, var(--bg-secondary), white);
}

.link-preview-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.link-preview-domain {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--primary-color);
    font-weight: 500;
}

.link-preview-domain i {
    font-size: 0.75rem;
    opacity: 0.7;
}

/* ========================
   Contact Section
   ======================== */
.contact-section {
    padding: 7rem 0;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

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

.contact-text {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.contact-email {
    display: inline-block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    padding: 1.5rem 3rem;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    border: 2px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.contact-email::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.5s ease;
}

.contact-email:hover::before {
    left: 100%;
}

.contact-email:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-color: transparent;
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-xl);
}

/* ========================
   Footer
   ======================== */
.footer {
    padding: 2.5rem 0;
    background: linear-gradient(135deg, var(--text-primary), #0f172a);
    color: white;
    text-align: center;
}

.footer p {
    font-size: 1rem;
    opacity: 0.9;
    letter-spacing: 0.3px;
}

/* ========================
   Responsive Design
   ======================== */

/* Large Tablet & Small Desktop */
@media (max-width: 1024px) {
    .container {
        padding: 0 1.5rem;
    }

    .about-content {
        gap: 3.5rem;
    }

    .profile-image {
        width: 260px;
        height: 260px;
    }

    .profile-name {
        font-size: 2.5rem;
    }

    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        gap: 2rem;
    }
}

/* Tablet */
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }

    .container {
        padding: 0 1.25rem;
    }

    .header {
        padding: 1rem 0;
    }

    .logo {
        font-size: 1.25rem;
    }

    .nav-links {
        gap: 1.5rem;
    }

    .nav-links a {
        font-size: 0.875rem;
    }

    .about-section {
        padding: 5rem 0 4rem;
    }

    .about-content {
        flex-direction: column;
        text-align: center;
        gap: 2.5rem;
    }

    .profile-image {
        width: 220px;
        height: 220px;
    }

    .profile-name {
        font-size: 2.25rem;
    }

    .profile-title {
        font-size: 1.25rem;
    }

    .profile-bio {
        font-size: 1.0625rem;
    }

    .social-links {
        justify-content: center;
    }

    .portfolio-section,
    .contact-section {
        padding: 5rem 0;
    }

    .portfolio-links {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 2.25rem;
        margin-bottom: 3rem;
    }

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

    .contact-email {
        font-size: 1.375rem;
        padding: 1.25rem 2rem;
    }
}

/* Mobile */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .container {
        padding: 0 1rem;
    }

    .header {
        padding: 0.875rem 0;
    }

    .nav {
        flex-direction: column;
        gap: 0.75rem;
        align-items: flex-start;
    }

    .logo {
        font-size: 1.125rem;
    }

    .nav-links {
        gap: 1.25rem;
        flex-wrap: wrap;
    }

    .nav-links a {
        font-size: 0.8125rem;
    }

    .about-section {
        padding: 3.5rem 0 3rem;
    }

    .profile-image-wrapper::before {
        inset: -6px;
    }

    .profile-image {
        width: 180px;
        height: 180px;
        border: 4px solid white;
    }

    .profile-name {
        font-size: 1.875rem;
    }

    .profile-title {
        font-size: 1.125rem;
        margin-bottom: 1.5rem;
    }

    .profile-bio {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .social-link {
        padding: 0.75rem 1.25rem;
        font-size: 0.875rem;
    }

    .social-link i {
        font-size: 1.125rem;
    }

    .portfolio-section,
    .contact-section {
        padding: 3.5rem 0;
    }

    .section-title {
        font-size: 1.875rem;
        margin-bottom: 2.5rem;
    }

    .section-title::after {
        width: 60px;
        height: 3px;
    }

    .portfolio-card-content {
        padding: 1.5rem;
    }

    .portfolio-title {
        font-size: 1.375rem;
    }

    .portfolio-description {
        font-size: 1rem;
    }

    .tag {
        padding: 0.4rem 0.875rem;
        font-size: 0.8125rem;
    }

    .contact-text {
        font-size: 1.0625rem;
        margin-bottom: 2rem;
    }

    .contact-email {
        font-size: 1.125rem;
        padding: 1rem 1.75rem;
    }

    .footer {
        padding: 2rem 0;
    }

    .footer p {
        font-size: 0.875rem;
    }
}

/* Extra Small Mobile */
@media (max-width: 360px) {
    .container {
        padding: 0 0.875rem;
    }

    .profile-image {
        width: 160px;
        height: 160px;
    }

    .profile-name {
        font-size: 1.625rem;
    }

    .section-title {
        font-size: 1.625rem;
    }

    .contact-email {
        font-size: 1rem;
        padding: 0.875rem 1.5rem;
    }
}

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

.hidden {
    display: none;
}

/* Smooth Loading Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.6s ease-out;
}

/* Loading skeleton */
.loading {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}