/* =========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================= */
:root {
    --bg-color: #0f172a; /* Dark Blue Slate */
    --bg-alt: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-primary: #0ea5e9; /* Cyan */
    --accent-secondary: #8b5cf6; /* Violet */
    --gradient: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    --navbar-bg: rgba(15, 23, 42, 0.85);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 6rem 0;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
    font-weight: 700;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient);
    border-radius: 2px;
}

/* =========================================================================
   BUTTONS
   ========================================================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(14, 165, 233, 0.5);
}

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

.btn-secondary:hover {
    background: var(--accent-primary);
    color: white;
}

/* =========================================================================
   NAVBAR
   ========================================================================= */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    padding: 1rem 0;
    background: var(--navbar-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: 1px;
}

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

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding-bottom: 5px;
}

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

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

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

.mobile-menu {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* =========================================================================
   HERO SECTION
   ========================================================================= */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
}

.hero-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
    max-width: 1100px;
    width: 100%;
    padding: 0 2rem;
}

.hero-image-container {
    flex-shrink: 0;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    padding: 8px;
    background: var(--gradient);
    position: relative;
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.4);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}

.hero-image {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    object-position: 0% 15%;
    border: 6px solid var(--bg-color);
}

.hero-content {
    max-width: 600px;
    text-align: left;
}

.greeting {
    font-family: var(--font-heading);
    color: var(--accent-primary);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 4.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 2rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.3;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

/* =========================================================================
   ABOUT SECTION
   ========================================================================= */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: flex-start;
}

.about-text p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.interests h3, .languages h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.mt-4 { margin-top: 2rem; }

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

.badge {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-fast);
}

.badge:hover {
    background: rgba(14, 165, 233, 0.1);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.education-card {
    background: var(--bg-alt);
    padding: 2.5rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.education-card h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.education-list li {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
    border-left: 2px solid rgba(14, 165, 233, 0.3);
    position: relative;
}

.education-list li::before {
    content: '';
    position: absolute;
    left: -6px;
    top: 5px;
    width: 10px;
    height: 10px;
    background: var(--accent-primary);
    border-radius: 50%;
}

.education-list li:last-child {
    margin-bottom: 0;
}

.education-list h4 {
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
}

.education-list p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* =========================================================================
   EXPERIENCE (TIMELINE)
   ========================================================================= */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    height: 100%;
    width: 2px;
    background: rgba(255, 255, 255, 0.1);
}

.timeline-item {
    position: relative;
    padding-left: 3rem;
    margin-bottom: 3rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: 6px;
    top: 5px;
    width: 20px;
    height: 20px;
    background: var(--bg-color);
    border: 4px solid var(--accent-primary);
    border-radius: 50%;
    z-index: 1;
    transition: var(--transition-smooth);
}

.timeline-item:hover .timeline-dot {
    background: var(--accent-primary);
    box-shadow: 0 0 15px var(--accent-primary);
}

.timeline-content {
    background: var(--bg-alt);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-smooth);
}

.timeline-item:hover .timeline-content {
    transform: translateY(-5px);
    border-color: rgba(14, 165, 233, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.timeline-content .date {
    display: inline-block;
    padding: 0.2rem 0.8rem;
    background: rgba(139, 92, 246, 0.1);
    color: var(--accent-secondary);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.timeline-content .role {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    margin-bottom: 0.3rem;
}

.timeline-content .company {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 1rem;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* =========================================================================
   SKILLS SECTION
   ========================================================================= */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.skill-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 2.5rem 2rem;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition-smooth);
}

.skill-card:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-10px);
    border-color: rgba(14, 165, 233, 0.2);
}

.skill-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.skill-card h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.skill-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* =========================================================================
   CONTACT SECTION
   ========================================================================= */
.contact {
    text-align: center;
    background: linear-gradient(to bottom, var(--bg-color), var(--bg-alt));
}

.contact-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.contact-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.contact-link i {
    font-size: 2rem;
    color: var(--accent-primary);
    transition: var(--transition-fast);
}

.contact-link span {
    font-size: 1.1rem;
    font-weight: 500;
}

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

.contact-link:hover i {
    transform: translateY(-5px);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    font-size: 1.2rem;
    transition: var(--transition-smooth);
}

.social-links a:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-5px);
}

/* =========================================================================
   FOOTER
   ========================================================================= */
footer {
    text-align: center;
    padding: 2rem;
    background: #0b1121;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* =========================================================================
   ANIMATIONS & REVEAL CLASSES
   ========================================================================= */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

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

/* =========================================================================
   RESPONSIVE
   ========================================================================= */
@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-wrapper {
        flex-direction: column-reverse;
        text-align: center;
        gap: 2rem;
        padding-top: 2rem;
    }
    .hero-content {
        text-align: center;
    }
    .hero-image-container {
        width: 250px;
        height: 250px;
    }
    .hero-title { font-size: 3rem; }
    .hero-subtitle { font-size: 1.5rem; }
    
    .nav-links {
        display: none; /* Add mobile menu JS if needed, hidden for now */
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--navbar-bg);
        flex-direction: column;
        padding: 2rem;
        text-align: center;
        backdrop-filter: blur(10px);
    }
    
    .nav-links.show {
        display: flex;
    }

    .mobile-menu {
        display: block;
    }
    
    .hero-cta {
        flex-direction: column;
    }
}