/* ============================================
   PORTFOLIO STYLES - Dark Theme
   Modern, clean, professional design
   ============================================ */

/* Root Variables */
:root {
    --primary-color: #00d4ff;
    --primary-dark: #0099cc;
    --secondary-color: #7c3aed;
    --background: #0a0e27;
    --surface: #1a1f3a;
    --surface-alt: #252d45;
    --text-primary: #e2e8f0;
    --text-secondary: #a0aec0;
    --accent: #00d4ff;
    --border-color: #2d3748;
    --shadow: 0 10px 30px rgba(0, 212, 255, 0.1);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ============================================
   NAVIGATION BAR
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    cursor: pointer;
    transition: var(--transition);
}

.nav-logo:hover {
    color: var(--primary-color);
    text-shadow: 0 0 10px var(--accent);
}

.logo-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

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

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

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: var(--accent);
    transition: width 0.3s ease;
}

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

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

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 3px;
    transition: var(--transition);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    margin-top: 70px;
    min-height: calc(100vh - 70px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    padding: 40px 20px;
}

/* Animated background gradient */
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
    animation: float 6s ease-in-out infinite;
    z-index: 0;
}

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

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    animation: fadeInUp 1s ease forwards;
}

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

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: slideDown 0.8s ease forwards;
}

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

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--accent);
    margin-bottom: 20px;
    font-weight: 600;
    animation: slideDown 0.8s ease 0.1s forwards;
    opacity: 0;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
    animation: slideDown 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 60px;
    animation: slideDown 0.8s ease 0.3s forwards;
    opacity: 0;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 30px;
    border: 2px solid var(--accent);
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
}

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

.btn-primary:hover {
    background: transparent;
    color: var(--accent);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
    transform: translateY(-3px);
}

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

.btn-secondary:hover {
    background: var(--accent);
    color: var(--background);
    transform: translateY(-3px);
}

.hero-social {
    display: flex;
    gap: 20px;
    justify-content: center;
    animation: slideDown 0.8s ease 0.4s forwards;
    opacity: 0;
}

.social-icon {
    width: 50px;
    height: 50px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition);
    text-decoration: none;
    font-size: 1.2rem;
}

.social-icon:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-5px);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(10px); }
}

.hero-scroll p {
    font-size: 0.9rem;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
    padding: 100px 20px;
    background: linear-gradient(135deg, var(--background) 0%, var(--surface) 100%);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 60px;
    text-align: center;
    color: var(--text-primary);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: 20px auto 0;
    border-radius: 2px;
}

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

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 1.05rem;
    line-height: 1.8;
    transition: var(--transition);
}

.about-text p:hover {
    color: var(--text-primary);
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

.stat {
    background: var(--surface-alt);
    padding: 30px;
    border-radius: 15px;
    border-left: 4px solid var(--accent);
    transition: var(--transition);
    cursor: pointer;
}

.stat:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow);
}

.stat h3 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 5px;
}

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

/* ============================================
   SKILLS SECTION
   ============================================ */
.skills {
    padding: 100px 20px;
    background-color: var(--surface);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.skill-category {
    background: var(--surface-alt);
    padding: 30px;
    border-radius: 15px;
    border-top: 3px solid var(--accent);
    transition: var(--transition);
}

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

.category-title {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.category-title i {
    font-size: 1.5rem;
}

.skill-items {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-badge {
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid rgba(0, 212, 255, 0.3);
    transition: var(--transition);
    display: inline-block;
}

.skill-badge:hover {
    background: var(--primary-color);
    color: var(--background);
    transform: scale(1.05);
}

/* ============================================
   PROJECTS SECTION
   ============================================ */
.projects {
    padding: 100px 20px;
    background: linear-gradient(135deg, var(--surface) 0%, var(--background) 100%);
}

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

.project-card {
    background: var(--surface-alt);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 30px;
    transition: var(--transition);
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

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

.project-card:hover {
    border-color: var(--accent);
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.15);
}

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

.project-icon {
    width: 50px;
    height: 50px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.5rem;
}

.project-title {
    font-size: 1.4rem;
    color: var(--text-primary);
    margin: 0;
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.8;
    flex-grow: 1;
}

.project-impact {
    background: rgba(0, 212, 255, 0.05);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    border-left: 3px solid var(--accent);
}

.project-impact strong {
    color: var(--accent);
    display: block;
    margin-bottom: 10px;
}

.project-impact ul {
    list-style: none;
    padding-left: 0;
}

.project-impact li {
    color: var(--text-secondary);
    padding: 5px 0;
    padding-left: 20px;
    position: relative;
}

.project-impact li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--accent);
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.tech-tag {
    background: rgba(124, 58, 237, 0.1);
    color: var(--secondary-color);
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    border: 1px solid rgba(124, 58, 237, 0.3);
}

.project-links {
    display: flex;
    gap: 15px;
    margin-top: auto;
}

.project-link {
    flex: 1;
    padding: 10px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    text-decoration: none;
    text-align: center;
    color: var(--text-secondary);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 500;
}

.project-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(0, 212, 255, 0.1);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    padding: 100px 20px;
    background-color: var(--surface);
}

.contact-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

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

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 20px;
    background: var(--surface-alt);
    border-radius: 10px;
    border-left: 3px solid var(--accent);
    transition: var(--transition);
}

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

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    width: 30px;
    text-align: center;
}

.contact-item h4 {
    color: var(--text-primary);
    margin-bottom: 5px;
}

.contact-item p {
    color: var(--text-secondary);
}

.contact-item a {
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
}

.contact-item a:hover {
    text-decoration: underline;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    background: var(--surface-alt);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    font-size: 1rem;
}

.contact-form .btn {
    width: 100%;
}

.social-links {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.social-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--surface-alt);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-3px);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: rgba(0, 0, 0, 0.5);
    border-top: 1px solid var(--border-color);
    padding: 30px 20px;
    text-align: center;
    color: var(--text-secondary);
}

.footer p {
    margin: 10px 0;
}

.footer i {
    color: #ff6b6b;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    .nav-menu {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .hamburger {
        display: flex;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .hero-social {
        gap: 15px;
    }

    .section-title {
        font-size: 2rem;
    }

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

    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat {
        padding: 20px;
    }

    .stat h3 {
        font-size: 2rem;
    }

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

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

    .social-links {
        flex-direction: column;
    }

    .contact-form .btn {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .nav-container {
        height: 60px;
    }

    .hero {
        margin-top: 60px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-description {
        font-size: 0.95rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.95rem;
    }

    .hero-buttons {
        gap: 10px;
    }

    .section-title {
        font-size: 1.8rem;
    }

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

    .about-stats {
        grid-template-columns: 1fr;
    }

    .project-card {
        padding: 20px;
    }

    .contact-info {
        gap: 20px;
    }

    .contact-item {
        padding: 15px;
    }

    .social-links {
        gap: 10px;
    }

    .social-link {
        padding: 10px 16px;
        font-size: 0.9rem;
    }
}

/* Smooth scrolling for entire page */
@supports (scroll-behavior: smooth) {
    html {
        scroll-behavior: smooth;
    }
}