/* ==================== ROOT VARIABLES ==================== */
:root {
    --bg-dark: #0A0E27;
    --bg-secondary: #141B2D;
    --bg-card: #1A2332;
    --accent-primary: #00D9FF;
    --accent-secondary: #00A8CC;
    --accent-gradient: linear-gradient(135deg, #00D9FF 0%, #00A8CC 100%);
    --text-primary: #FFFFFF;
    --text-secondary: #A0AEC0;
    --text-muted: #718096;
    --border-color: #2D3748;
    --header-height: 70px;
    --transition-fast: 0.3s ease;
    --transition-smooth: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px rgba(0, 217, 255, 0.3);
}

/* ==================== GLOBAL STYLES ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== HEADER ==================== */
header {
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

header.scrolled {
    padding: 0.5rem 0;
    box-shadow: var(--shadow-lg);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.logo-bracket {
    color: var(--accent-primary);
    font-weight: 800;
}

.logo:hover {
    color: var(--accent-primary);
    transform: scale(1.05);
}

header nav ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 30px;
}

header nav ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: var(--transition-fast);
    padding: 5px 0;
}

header nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    transition: width var(--transition-fast);
}

header nav ul li a:hover,
header nav ul li a.active {
    color: var(--accent-primary);
}

header nav ul li a:hover::after,
header nav ul li a.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.8rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.menu-toggle:hover {
    color: var(--accent-primary);
    transform: scale(1.1);
}

/* ==================== HERO SECTION ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: calc(var(--header-height) + 60px);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 217, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-50px, -50px); }
}

.hero-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 60px;
    width: 100%;
    position: relative;
    z-index: 1;
}

.hero-text {
    flex: 1;
    max-width: 600px;
}

.hero-greeting {
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 10px;
    animation: fadeInUp 0.8s ease;
}

.hero-name {
    font-size: 3.5rem;
    font-weight: 800;
    margin: 10px 0;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-role {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.typing {
    color: var(--accent-primary);
    font-weight: 600;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 30px;
    animation: fadeInUp 0.8s ease 0.6s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.social-links {
    display: flex;
    gap: 20px;
    margin: 30px 0;
    animation: fadeInUp 0.8s ease 0.8s both;
}

.social-links a {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    font-size: 1.3rem;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: var(--accent-gradient);
    border-color: var(--accent-primary);
    color: var(--bg-dark);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 1s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: transparent;
    color: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.btn-secondary:hover {
    background: var(--accent-gradient);
    color: var(--bg-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.btn-small {
    padding: 10px 20px;
    font-size: 0.9rem;
}

.hero-image {
    flex-shrink: 0;
    animation: fadeInRight 1s ease;
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.image-wrapper {
    position: relative;
    width: 350px;
    height: 350px;
}

.hero-img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid var(--accent-primary);
    box-shadow: var(--shadow-glow);
    position: relative;
    z-index: 2;
    transition: var(--transition-smooth);
}

.hero-img:hover {
    transform: scale(1.05);
}

.image-background {
    position: absolute;
    top: 20px;
    left: 20px;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--accent-gradient);
    opacity: 0.3;
    z-index: 1;
    animation: pulse 3s ease-in-out infinite;
}

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

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--accent-primary);
    font-size: 2rem;
    animation: bounce 2s infinite;
}

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

/* ==================== SECTIONS ==================== */
section {
    padding: 100px 0;
    position: relative;
}

.section-title {
    text-align: center;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 60px;
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    display: block;
    width: 100px;
    height: 4px;
    background: var(--accent-gradient);
    margin: 20px auto 0;
    border-radius: 2px;
}

/* ==================== ABOUT SECTION ==================== */
#about {
    background: var(--bg-secondary);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text {
    text-align: center;
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 30px;
}

.about-text strong {
    color: var(--accent-primary);
    font-weight: 600;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: var(--bg-card);
    border-radius: 12px;
    border: 2px solid var(--border-color);
    transition: all var(--transition-fast);
}

.stat-item:hover {
    border-color: var(--accent-primary);
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ==================== SKILLS SECTION ==================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.skill-category {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 16px;
    border: 2px solid var(--border-color);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-fast);
}

.skill-category:hover::before {
    transform: scaleX(1);
}

.skill-category:hover {
    border-color: var(--accent-primary);
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow);
}

.skill-icon {
    width: 70px;
    height: 70px;
    background: var(--accent-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--bg-dark);
    margin-bottom: 20px;
}

.skill-category h3 {
    font-size: 1.5rem;
    color: var(--accent-primary);
    margin-bottom: 20px;
}

.skill-category ul {
    list-style: none;
    padding: 0;
}

.skill-category li {
    margin-bottom: 12px;
    font-size: 1.05rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition-fast);
}

.skill-category li:hover {
    color: var(--accent-primary);
    transform: translateX(10px);
}

.skill-category li i {
    color: var(--accent-primary);
    font-size: 1.2rem;
}

/* ==================== PROJECTS SECTION ==================== */
#projects {
    background: var(--bg-secondary);
}

.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
}

.project-card {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 16px;
    border: 2px solid var(--border-color);
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-fast);
}

.project-card:hover::before {
    transform: scaleX(1);
}

.project-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-15px);
    box-shadow: var(--shadow-glow);
}

.project-icon {
    width: 80px;
    height: 80px;
    background: var(--accent-gradient);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--bg-dark);
    margin-bottom: 25px;
    transition: var(--transition-fast);
}

.project-card:hover .project-icon {
    transform: scale(1.1) rotate(5deg);
}

.project-card h3 {
    font-size: 1.6rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.project-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 25px;
    min-height: 80px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 25px;
}

.tag {
    background: var(--bg-secondary);
    color: var(--accent-primary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.project-links {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* ==================== CONTACT SECTION ==================== */
.contact-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-top: -30px;
    margin-bottom: 60px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 50px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 25px;
    background: var(--bg-card);
    border-radius: 12px;
    border: 2px solid var(--border-color);
    transition: all var(--transition-fast);
}

.contact-item:hover {
    border-color: var(--accent-primary);
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--accent-gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--bg-dark);
    flex-shrink: 0;
}

.contact-details h4 {
    color: var(--text-primary);
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.contact-details p,
.contact-details a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.contact-details a:hover {
    color: var(--accent-primary);
}

.contact-social h3 {
    color: var(--accent-primary);
    font-size: 1.8rem;
    margin-bottom: 30px;
    text-align: center;
}

.social-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 18px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.social-btn:hover {
    background: var(--accent-gradient);
    border-color: var(--accent-primary);
    color: var(--bg-dark);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.social-btn i {
    font-size: 1.5rem;
}

/* ==================== FOOTER ==================== */
footer {
    text-align: center;
    padding: 40px 20px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

footer p {
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.footer-tagline {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-style: italic;
}

footer .fa-heart {
    color: var(--accent-primary);
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* ==================== MODAL ==================== */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: var(--bg-card);
    color: var(--text-primary);
    margin: 5% auto;
    padding: 50px;
    border: 2px solid var(--accent-primary);
    width: 90%;
    max-width: 800px;
    border-radius: 20px;
    position: relative;
    animation: slideDown 0.4s;
    box-shadow: var(--shadow-glow);
}

@keyframes slideDown {
    from {
        transform: translateY(-100px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.close-btn {
    color: var(--text-secondary);
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 2.5rem;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition-fast);
}

.close-btn:hover {
    color: var(--accent-primary);
    transform: rotate(90deg);
}

.modal-body h2 {
    font-size: 2.5rem;
    color: var(--accent-primary);
    margin-bottom: 30px;
    text-align: center;
}

.modal-body h3 {
    color: var(--accent-primary);
    margin-top: 30px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
}

.modal-body p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.modal-body ul {
    list-style-position: inside;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.modal-body ul li {
    margin-bottom: 12px;
    padding-left: 10px;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin: 25px 0;
}

.tech-tag {
    background: var(--bg-secondary);
    color: var(--accent-primary);
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

.modal-footer-links {
    text-align: center;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 2px solid var(--border-color);
}

/* ==================== ANIMATIONS ==================== */
.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 992px) {
    .section-title {
        font-size: 2.5rem;
    }
    
    .hero-name {
        font-size: 3rem;
    }
    
    .hero-role {
        font-size: 1.7rem;
    }
}

@media (max-width: 768px) {
    header nav {
        display: none;
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: rgba(10, 14, 39, 0.98);
        backdrop-filter: blur(20px);
        padding: 20px;
        border-bottom: 2px solid var(--accent-primary);
    }
    
    header nav.active {
        display: flex;
    }
    
    header nav ul {
        flex-direction: column;
        width: 100%;
        gap: 0;
    }
    
    header nav ul li {
        width: 100%;
        text-align: center;
        padding: 15px 0;
        border-bottom: 1px solid var(--border-color);
    }
    
    .menu-toggle {
        display: block;
    }
    
    .hero {
        padding-top: calc(var(--header-height) + 40px);
    }
    
    .hero-content {
        flex-direction: column-reverse;
        text-align: center;
        gap: 40px;
    }
    
    .hero-text {
        max-width: 100%;
    }
    
    .hero-name {
        font-size: 2.5rem;
    }
    
    .hero-role {
        font-size: 1.5rem;
    }
    
    .hero-greeting {
        font-size: 1.1rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .image-wrapper {
        width: 250px;
        height: 250px;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    section {
        padding: 60px 0;
    }
    
    .skills-grid,
    .card-container {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .social-buttons {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        margin: 10% auto;
        padding: 30px 20px;
        width: 95%;
        max-height: 80vh;
        overflow-y: auto;
    }
    
    .modal-body h2 {
        font-size: 2rem;
    }
    
    .scroll-indicator {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-name {
        font-size: 2rem;
    }
    
    .hero-role {
        font-size: 1.3rem;
    }
    
    .image-wrapper {
        width: 200px;
        height: 200px;
    }
    
    .btn {
        width: 100%;
    }
    
    .project-links {
        flex-direction: column;
    }
    
    .project-links .btn {
        width: 100%;
    }
}