/* ═════════════════════════════════════════════════════════════════════
   PROFESSIONAL PREMIUM PORTFOLIO - MODERN CYBERPUNK DESIGN
   ═════════════════════════════════════════════════════════════════════ */

:root {
    /* Primary Colors - Cyberpunk/Premium Theme */
    --bg-primary: #0a0e27;
    --bg-secondary: #141829;
    --bg-tertiary: #1e2139;
    --bg-card: rgba(30, 33, 57, 0.8);
    
    /* Accent Colors */
    --accent-cyan: #00d9ff;
    --accent-cyan-light: #64f0ff;
    --accent-purple: #7c3aed;
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #b0bcc4;
    --text-muted: #7a8694;
    
    /* Borders & Shadows */
    --border-light: rgba(0, 217, 255, 0.1);
    --border-hover: rgba(0, 217, 255, 0.3);
    --shadow-lg: 0 25px 50px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.3);
    --glow-cyan: 0 0 20px rgba(0, 217, 255, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    background-attachment: fixed;
}

/* ═════════════════════════════════════════════════════════════════════
   NAVIGATION - PREMIUM STICKY HEADER
   ═════════════════════════════════════════════════════════════════════ */

.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    padding: 1rem 0;
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    letter-spacing: 2px;
    transition: transform 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo:hover {
    transform: scale(1.1);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 3rem;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
    transition: width 0.3s ease;
}

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

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

/* ═════════════════════════════════════════════════════════════════════
   HERO SECTION - STUNNING LANDING
   ═════════════════════════════════════════════════════════════════════ */

.hero-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, transparent, rgba(0, 217, 255, 0.05));
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 217, 255, 0.1), transparent);
    top: -250px;
    right: -250px;
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.hero-section::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.1), transparent);
    bottom: -200px;
    left: -200px;
    border-radius: 50%;
    animation: float 8s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(30px); }
}

.hero-section h1 {
    font-size: 4.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 1;
    text-shadow: 0 0 60px rgba(0, 217, 255, 0.2);
}

.subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
    font-weight: 500;
}

/* ═════════════════════════════════════════════════════════════════════
   CONTAINER & SECTIONS
   ═════════════════════════════════════════════════════════════════════ */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

main {
    min-height: calc(100vh - 200px);
}

section {
    margin: 6rem 0;
}

/* ═════════════════════════════════════════════════════════════════════
   ABOUT SECTION
   ═════════════════════════════════════════════════════════════════════ */

.about-intro {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 20px;
    padding: 4rem;
    margin-bottom: 4rem;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.about-intro::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple), transparent);
}

.about-intro h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-intro p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

/* ═════════════════════════════════════════════════════════════════════
   SKILLS SECTION - PREMIUM GRID
   ═════════════════════════════════════════════════════════════════════ */

.skills-section {
    margin: 6rem 0;
}

.skills-section h2 {
    font-size: 2.8rem;
    margin-bottom: 4rem;
    text-align: center;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.skill-category {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 15px;
    padding: 2.5rem;
    backdrop-filter: blur(10px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.skill-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 217, 255, 0.1), transparent);
    transition: left 0.6s ease;
}

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

.skill-category:hover::before {
    left: 100%;
}

.skill-category h3 {
    font-size: 1.4rem;
    color: var(--accent-cyan);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

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

.skill-category li {
    color: var(--text-secondary);
    padding: 0.8rem 0;
    padding-left: 1.5rem;
    position: relative;
    font-weight: 500;
    transition: all 0.3s ease;
}

.skill-category li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--accent-cyan);
    font-size: 1.5rem;
}

.skill-category li:hover {
    color: var(--accent-cyan);
    padding-left: 2rem;
}

/* ═════════════════════════════════════════════════════════════════════
   EXPERIENCE SECTION
   ═════════════════════════════════════════════════════════════════════ */

.experience-section {
    margin: 6rem 0;
}

.experience-section h2 {
    font-size: 2.8rem;
    margin-bottom: 4rem;
    text-align: center;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.experience-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.experience-item {
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.05), rgba(124, 58, 237, 0.05));
    border: 1px solid var(--border-light);
    border-radius: 15px;
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
}

.experience-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent-cyan), var(--accent-purple));
}

.experience-item:hover {
    border-color: var(--border-hover);
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.exp-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
    color: var(--bg-primary);
    padding: 0.6rem 1.5rem;
    border-radius: 25px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.experience-item h3 {
    font-size: 1.4rem;
    color: var(--accent-cyan);
    margin-bottom: 1rem;
    font-weight: 700;
}

.experience-item p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ═════════════════════════════════════════════════════════════════════
   PROJECTS SECTION - SHOWCASE
   ═════════════════════════════════════════════════════════════════════ */

.projects-section h2 {
    font-size: 2.8rem;
    margin-bottom: 4rem;
    text-align: center;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 15px;
    padding: 2.5rem;
    backdrop-filter: blur(10px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(0, 217, 255, 0.1), transparent);
    transition: top 0.6s ease;
    z-index: 1;
}

.project-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-12px);
    box-shadow: 0 30px 60px rgba(0, 217, 255, 0.2);
}

.project-card:hover::before {
    top: 0;
}

.project-card h3 {
    font-size: 1.4rem;
    color: var(--accent-cyan);
    margin-bottom: 1rem;
    font-weight: 700;
    position: relative;
    z-index: 2;
}

.project-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.7;
    position: relative;
    z-index: 2;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 2;
}

.tag {
    background: rgba(0, 217, 255, 0.15);
    color: var(--accent-cyan);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid rgba(0, 217, 255, 0.3);
    font-weight: 600;
    transition: all 0.3s ease;
}

.tag:hover {
    background: rgba(0, 217, 255, 0.25);
    border-color: var(--accent-cyan);
}

.project-links {
    display: flex;
    gap: 1rem;
    position: relative;
    z-index: 2;
}

.project-links a {
    flex: 1;
    text-align: center;
    padding: 0.8rem;
    border: 1px solid var(--border-hover);
    border-radius: 8px;
    color: var(--accent-cyan);
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 600;
}

.project-links a:hover {
    background: var(--accent-cyan);
    color: var(--bg-primary);
}

/* ═════════════════════════════════════════════════════════════════════
   CTA SECTION
   ═════════════════════════════════════════════════════════════════════ */

.cta-section {
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(124, 58, 237, 0.1));
    border: 1px solid var(--border-hover);
    border-radius: 20px;
    padding: 5rem 2rem;
    text-align: center;
    margin: 6rem 0;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 217, 255, 0.1), transparent);
    border-radius: 50%;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-cyan-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 1;
}

.cta-section p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.btn {
    padding: 1.2rem 2.5rem;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transition: left 0.4s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
    color: var(--bg-primary);
    box-shadow: 0 10px 30px rgba(0, 217, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 217, 255, 0.5);
}

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

.btn-secondary:hover {
    background: var(--accent-cyan);
    color: var(--bg-primary);
    box-shadow: 0 10px 30px rgba(0, 217, 255, 0.3);
}

/* ═════════════════════════════════════════════════════════════════════
   CONTACT FORM
   ═════════════════════════════════════════════════════════════════════ */

.contact-section {
    max-width: 800px;
    margin: 4rem auto;
}

.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.8rem;
    color: var(--accent-cyan);
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1.2rem;
    background: rgba(30, 33, 57, 0.5);
    border: 1px solid var(--border-light);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
    resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    background: rgba(30, 33, 57, 0.8);
    border-color: var(--border-hover);
    box-shadow: var(--glow-cyan);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.info-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-5px);
}

.info-card h3 {
    color: var(--accent-cyan);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.info-card p {
    color: var(--text-secondary);
}

.info-card a {
    color: var(--accent-cyan);
    text-decoration: none;
    transition: all 0.3s ease;
}

.info-card a:hover {
    color: var(--accent-cyan-light);
}

/* ═════════════════════════════════════════════════════════════════════
   FOOTER
   ═════════════════════════════════════════════════════════════════════ */

footer {
    background: rgba(10, 14, 39, 0.95);
    border-top: 1px solid var(--border-light);
    padding: 3rem 2rem;
    margin-top: 4rem;
    text-align: center;
    backdrop-filter: blur(10px);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
}

footer p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.social-links a {
    color: var(--accent-cyan);
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.social-links a:hover {
    color: var(--accent-cyan-light);
    transform: translateY(-3px);
}

/* ═════════════════════════════════════════════════════════════════════
   MOBILE RESPONSIVE
   ═════════════════════════════════════════════════════════════════════ */

@media (max-width: 1024px) {
    .hero-section h1 {
        font-size: 3.5rem;
    }

    .skills-grid,
    .experience-list,
    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        gap: 1.5rem;
        font-size: 0.9rem;
    }

    .hero-section {
        min-height: 80vh;
        padding: 2rem;
    }

    .hero-section h1 {
        font-size: 2.5rem;
    }

    .subtitle {
        font-size: 1.2rem;
    }

    .skills-grid,
    .experience-list,
    .projects-grid {
        grid-template-columns: 1fr;
    }

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

    .btn {
        width: 100%;
    }

    section {
        margin: 3rem 0;
    }

    .about-intro {
        padding: 2rem;
    }

    .container {
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 1rem;
    }

    .logo {
        font-size: 1.4rem;
    }

    .nav-menu {
        gap: 1rem;
        font-size: 0.8rem;
    }

    .hero-section h1 {
        font-size: 2rem;
    }

    .skills-section h2,
    .experience-section h2 {
        font-size: 2rem;
    }

    .skill-category {
        padding: 1.5rem;
    }

    .cta-section {
        padding: 2rem 1rem;
    }

    .btn {
        padding: 1rem 2rem;
        font-size: 0.9rem;
    }

    .contact-info {
        gap: 1.5rem;
    }
}