/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --success-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    
    --bg-dark: #0f0f23;
    --bg-card: #1a1a2e;
    --bg-hover: #16213e;
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0b8;
    --text-muted: #6c6c84;
    
    --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 20px rgba(102, 126, 234, 0.4);
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

body.loaded {
    animation: fadeIn 0.6s ease-in;
}

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

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-gradient);
}

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

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
    background: rgba(15, 15, 35, 0.8);
    backdrop-filter: blur(10px);
}

.navbar.scrolled {
    padding: 15px 0;
    background: rgba(15, 15, 35, 0.95);
    box-shadow: var(--shadow-md);
}

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

.logo {
    font-size: 28px;
    font-weight: bold;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    cursor: pointer;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 0 10px rgba(102, 126, 234, 0.5));
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition);
    padding: 5px 0;
}

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

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

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

/* ===== SECTIONS ===== */
.section {
    min-height: 100vh;
    padding: 100px 0;
    display: flex;
    align-items: center;
}

.section-title {
    font-size: 48px;
    text-align: center;
    margin-bottom: 60px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--primary-gradient);
    border-radius: 2px;
}

/* ===== HOME SECTION ===== */
.home-section {
    position: relative;
    background: radial-gradient(ellipse at top, rgba(102, 126, 234, 0.15), transparent),
                radial-gradient(ellipse at bottom, rgba(118, 75, 162, 0.15), transparent);
}

.home-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 40px;
}

.profile-image-container {
    display: flex;
    justify-content: center;
}

.profile-image {
    width: 350px;
    height: 350px;
    border-radius: 50%;
    object-fit: cover;
    border: 5px solid transparent;
    background: var(--primary-gradient);
    padding: 5px;
    box-shadow: var(--shadow-glow);
}

.home-text {
    max-width: 800px;
}

.greeting {
    font-size: 56px;
    font-weight: bold;
    margin-bottom: 20px;
    line-height: 1.2;
}

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

.tagline {
    font-size: 24px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.description {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 40px;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn {
    padding: 15px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid;
    border-image: var(--primary-gradient) 1;
}

.btn-secondary:hover {
    background: var(--primary-gradient);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* Ripple effect */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: scale(0);
    animation: rippleAnimation 0.6s ease-out;
}

@keyframes rippleAnimation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* ===== ABOUT SECTION ===== */
.about-section {
    background: linear-gradient(180deg, transparent 0%, rgba(102, 126, 234, 0.05) 100%);
}

.about-content {
    display: grid;
    gap: 60px;
}

.specialization h3,
.contact-section h3 {
    font-size: 32px;
    margin-bottom: 30px;
    color: var(--text-primary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.skill-card {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 20px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0;
    transform: translateY(30px);
}

.skill-card.animate-in {
    animation: slideUp 0.6s ease-out forwards;
}

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

.skill-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(102, 126, 234, 0.5);
    background: var(--bg-hover);
}

.skill-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.skill-card h4 {
    font-size: 22px;
    margin-bottom: 10px;
    color: var(--text-primary);
}

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

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: var(--bg-card);
    border-radius: 10px;
    transition: var(--transition);
    opacity: 0;
    animation: fadeInLeft 0.6s ease-out forwards;
}

.contact-item:hover {
    background: var(--bg-hover);
    transform: translateX(10px);
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.contact-icon {
    font-size: 24px;
}

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

.social-link {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border-radius: 50%;
    color: var(--text-primary);
    transition: var(--transition);
    opacity: 0;
    animation: popIn 0.6s ease-out forwards;
}

@keyframes popIn {
    from {
        opacity: 0;
        transform: scale(0);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.social-link:hover {
    background: var(--primary-gradient);
    transform: translateY(-5px) rotate(5deg);
    box-shadow: var(--shadow-glow);
}

/* ===== PROJECTS SECTION ===== */
.projects-section {
    background: radial-gradient(ellipse at center, rgba(118, 75, 162, 0.1), transparent);
}

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

.project-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 35px;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: var(--transition);
}

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

.project-card.animate-in {
    animation: slideUp 0.6s ease-out forwards;
}

.project-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: rgba(102, 126, 234, 0.5);
}

.project-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.project-icon {
    font-size: 40px;
    background: var(--primary-gradient);
    padding: 15px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-card h3 {
    font-size: 24px;
    color: var(--text-primary);
}

.project-description {
    color: var(--text-muted);
    margin-bottom: 20px;
    line-height: 1.8;
}

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

.tag {
    padding: 6px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    color: white;
    background: var(--primary-gradient);
}

.project-link {
    display: inline-block;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    padding: 5px 0;
}

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

.project-link:hover {
    color: #667eea;
}

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

.project-links-group {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-card);
    padding: 30px 0;
    text-align: center;
    color: var(--text-muted);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ===== MOBILE RESPONSIVENESS ===== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--bg-card);
        width: 100%;
        text-align: center;
        transition: var(--transition);
        padding: 30px 0;
        gap: 20px;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
        flex-direction: column;
        cursor: pointer;
        gap: 5px;
    }
    
    .hamburger span {
        width: 25px;
        height: 3px;
        background: var(--text-primary);
        transition: var(--transition);
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    .home-content {
        gap: 30px;
    }
    
    .greeting {
        font-size: 36px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .profile-image {
        width: 250px;
        height: 250px;
    }
    
    .cta-buttons {
        justify-content: center;
    }
    
    .skills-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .greeting {
        font-size: 28px;
    }
    
    .tagline {
        font-size: 18px;
    }
    
    .btn {
        padding: 12px 30px;
        font-size: 14px;
    }
}