/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
    /* Primary Colors */
    --primary: #2563EB;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    
    /* Dark Theme Colors */
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: #1a1f35;
    --bg-hover: #242b45;
    
    /* Text Colors */
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    /* Accent Colors */
    --accent: #7C3AED;
    --accent-light: #a78bfa;
    
    /* Utility Colors */
    --border: #374151;
    --shadow: rgba(37, 99, 235, 0.1);
    --shadow-strong: rgba(37, 99, 235, 0.2);
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-padding: 0 20px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'DM Sans', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* ===================================
   Container
   =================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 0;
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 14, 26, 0.9);
    backdrop-filter: blur(20px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    padding: 15px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: 'Syne', sans-serif;
    font-size: 24px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 4px;
}

.logo-bracket {
    color: var(--primary);
}

.logo-text {
    color: var(--text-primary);
}

.nav-menu {
    display: flex;
    gap: 40px;
    align-items: center;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 20px 80px;
}

.hero-background {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(37, 99, 235, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37, 99, 235, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
}

.hero-gradient {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(
        circle at center,
        rgba(37, 99, 235, 0.15) 0%,
        rgba(124, 58, 237, 0.1) 25%,
        transparent 50%
    );
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.hero-container {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

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

.profile-image-wrapper {
    position: relative;
    width: 180px;
    height: 180px;
    margin: 0 auto 40px;
}

.profile-ring {
    position: absolute;
    inset: -10px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    animation: pulse 3s ease-in-out infinite;
    opacity: 0.5;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.3;
    }
}

.profile-image {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--bg-primary);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-text {
    margin-bottom: 40px;
}

.hero-greeting {
    font-size: 18px;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.hero-name {
    font-family: 'Syne', sans-serif;
    font-size: 64px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.name-underline {
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 2px;
}

.hero-title {
    font-size: 32px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.hero-tagline {
    font-size: 18px;
    color: var(--text-muted);
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 50px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent, rgba(255, 255, 255, 0.1));
    opacity: 0;
    transition: var(--transition);
}

.btn:hover::before {
    opacity: 1;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 15px var(--shadow-strong);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--shadow-strong);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.hero-social {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.social-link {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 18px;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-3px);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: var(--text-muted);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0%, 100% {
        transform: translateY(0);
        opacity: 0;
    }
    50% {
        transform: translateY(15px);
        opacity: 1;
    }
}

/* ===================================
   Section Headers
   =================================== */
.section-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 60px;
}

.section-number {
    font-family: 'Syne', sans-serif;
    font-size: 48px;
    font-weight: 800;
    color: var(--primary);
    opacity: 0.3;
}

.section-title {
    font-family: 'Syne', sans-serif;
    font-size: 42px;
    font-weight: 700;
    color: var(--text-primary);
}

.section-line {
    flex: 1;
    height: 2px;
    background: linear-gradient(90deg, var(--border), transparent);
}

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

.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.about-text {
    font-size: 17px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.about-quote {
    position: relative;
    margin-top: 30px;
    padding: 30px;
    background: var(--bg-card);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-md);
}

.about-quote i {
    font-size: 24px;
    color: var(--primary);
    opacity: 0.3;
    margin-bottom: 15px;
}

.about-quote p {
    font-size: 18px;
    font-style: italic;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.quote-author {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
}

.about-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.info-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 25px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.info-card:hover {
    transform: translateX(10px);
    border-color: var(--primary);
    box-shadow: 0 4px 20px var(--shadow);
}

.info-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
    flex-shrink: 0;
}

.info-content h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.info-content p {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

/* ===================================
   Skills Section
   =================================== */
.skills {
    padding: var(--section-padding);
    background: var(--bg-primary);
}

.skills-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.skill-category {
    padding: 35px;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px var(--shadow);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
}

.category-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: white;
}

.category-header h3 {
    font-family: 'Syne', sans-serif;
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}

.skill-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

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

.skill-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.skill-percentage {
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
}

.skill-bar {
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 10px;
    width: 0;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 40px;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3));
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

.skill-item.animate .skill-progress {
    width: var(--skill-width);
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.project-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 50px var(--shadow-strong);
}

.project-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.9), rgba(124, 58, 237, 0.9));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-link {
    width: 60px;
    height: 60px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--primary);
    transform: scale(0);
    transition: var(--transition);
}

.project-card:hover .project-link {
    transform: scale(1);
}

.project-content {
    padding: 25px;
}

.project-title {
    font-family: 'Syne', sans-serif;
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.project-description {
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    padding: 6px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    color: var(--primary);
    transition: var(--transition);
}

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

/* ===================================
   Contact Section
   =================================== */
.contact {
    padding: var(--section-padding);
    background: var(--bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: start;
}

.contact-info h3 {
    font-family: 'Syne', sans-serif;
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.contact-info > p {
    font-size: 17px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-item p {
    font-size: 16px;
    color: var(--text-primary);
}

.contact-form {
    background: var(--bg-card);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.form-group {
    position: relative;
    margin-bottom: 30px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    color: var(--text-primary);
    font-family: 'DM Sans', sans-serif;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg-primary);
}

.form-group label {
    position: absolute;
    top: 15px;
    left: 15px;
    font-size: 15px;
    color: var(--text-muted);
    pointer-events: none;
    transition: var(--transition);
}

.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:focus + label,
.form-group textarea:not(:placeholder-shown) + label {
    top: -10px;
    left: 10px;
    font-size: 12px;
    color: var(--primary);
    background: var(--bg-card);
    padding: 0 8px;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    width: 100%;
    justify-content: center;
    margin-top: 10px;
}

/* ===================================
   Footer
   =================================== */
.footer {
    padding: 40px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

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

.footer-text i {
    color: #ef4444;
    margin: 0 3px;
}

/* ===================================
   Scroll Animations
   =================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: rgba(10, 14, 26, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 40px 20px;
        gap: 30px;
        transition: var(--transition);
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .hero-name {
        font-size: 48px;
    }

    .hero-title {
        font-size: 24px;
    }

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

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

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

    .section-number {
        font-size: 32px;
    }

    .section-title {
        font-size: 32px;
    }

    .skills-categories {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 640px) {
    :root {
        --section-padding: 60px 0;
    }

    .hero {
        padding: 100px 20px 60px;
    }

    .hero-name {
        font-size: 36px;
    }

    .hero-title {
        font-size: 20px;
    }

    .hero-tagline {
        font-size: 16px;
    }

    .profile-image-wrapper {
        width: 140px;
        height: 140px;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .section-line {
        width: 100%;
    }

    .section-title {
        font-size: 28px;
    }

    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }

    .contact-form {
        padding: 25px;
    }

    .skill-category {
        padding: 25px;
    }

    .skills-categories {
        grid-template-columns: 1fr;
        gap: 25px;
    }
}