/* ===================================
   CSS Variables
   =================================== */
:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --dark-bg: #0f172a;
    --darker-bg: #020617;
    --light-text: #f8fafc;
    --gray-text: #94a3b8;
    --card-bg: rgba(30, 41, 59, 0.5);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================================
   Global Styles
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    background-color: var(--darker-bg);
    color: var(--light-text);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        180deg,
        rgba(2, 6, 23, 0.7) 0%,
        rgba(2, 6, 23, 0.85) 50%,
        rgba(2, 6, 23, 0.7) 100%
    );
    z-index: 1;
    pointer-events: none;
}

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

/* ===================================
   Three.js Canvas Background
   =================================== */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

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

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 101;
}

.logo-text {
    font-family: var(--font-primary);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--light-text);
}

.logo-accent {
    color: var(--primary-color);
    font-size: 2rem;
}

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

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transition: width 0.3s ease;
}

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

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

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--light-text);
    transition: var(--transition);
    border-radius: 2px;
}

/* ===================================
   Hero Section
   =================================== */
.hero-section {
    min-height: 100vh;
    height: 100vh;
    max-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: 8rem 2rem 4rem;
    overflow: hidden;
    z-index: 2;
}

.hero-content {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 3;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 500;
}

.hero-title {
    font-family: var(--font-primary);
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--light-text) 0%, var(--primary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-role {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    color: var(--gray-text);
    margin-bottom: 1.5rem;
    min-height: 80px;
}

.typing-text {
    color: var(--accent-color);
}

.cursor {
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-description {
    font-size: 1.1rem;
    color: var(--gray-text);
    max-width: 700px;
    margin: 0 auto 2.5rem;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.4);
}

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

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

.social-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.social-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-text);
    text-decoration: none;
    transition: var(--transition);
}

.social-icon:hover {
    background: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-text);
    font-size: 0.9rem;
    animation: float 3s ease-in-out infinite;
    z-index: 3;
}

.mouse {
    width: 25px;
    height: 40px;
    border: 2px solid var(--gray-text);
    border-radius: 20px;
    position: relative;
}

.mouse::before {
    content: '';
    width: 4px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { top: 8px; opacity: 1; }
    100% { top: 20px; opacity: 0; }
}

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

/* Fade In Animations */
.fade-in { animation: fadeIn 0.8s ease-out; }
.fade-in-delay-1 { animation: fadeIn 0.8s ease-out 0.2s backwards; }
.fade-in-delay-2 { animation: fadeIn 0.8s ease-out 0.4s backwards; }
.fade-in-delay-3 { animation: fadeIn 0.8s ease-out 0.6s backwards; }
.fade-in-delay-4 { animation: fadeIn 0.8s ease-out 0.8s backwards; }
.fade-in-delay-5 { animation: fadeIn 0.8s ease-out 1s backwards; }

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

/* ===================================
   Section Styles
   =================================== */
section {
    padding: 6rem 0;
    position: relative;
    z-index: 2;
    background-color: transparent;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-subtitle {
    color: var(--primary-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    display: inline-block;
}

.section-title {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
}

.title-underline {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    margin: 0 auto;
    border-radius: 2px;
}

/* ===================================
   About Section
   =================================== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-description {
    color: var(--gray-text);
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    background: var(--card-bg);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--gray-text);
    font-size: 0.9rem;
}

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.skill-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    padding: 1.5rem;
    border-radius: 15px;
    transition: var(--transition);
}

.skill-card:hover {
    transform: translateY(-5px);
    background: var(--card-bg);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.2);
}

.skill-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.skill-name {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--light-text);
}

.skill-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 10px;
    width: 0;
    transition: width 1.5s ease-out;
}

.skill-percent {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
}

/* ===================================
   Services Section
   =================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: 20px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.3);
}

.service-card:hover::before {
    opacity: 0.1;
}

.service-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.service-title {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--light-text);
}

.service-description {
    color: var(--gray-text);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.service-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    padding: 0.4rem 1rem;
    background: rgba(99, 102, 241, 0.2);
    border: 1px solid var(--primary-color);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--primary-color);
}

/* ===================================
   Projects Section
   =================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.project-demo {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition);
}

.project-demo:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.3);
}

.project-thumbnail {
    height: 180px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: white;
}

.project-info {
    padding: 1.5rem;
}

.project-name {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--light-text);
}

.project-stack {
    color: var(--gray-text);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.project-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.project-link:hover {
    color: var(--accent-color);
    gap: 1rem;
}

/* ===================================
   Portfolio Section
   =================================== */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.portfolio-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    height: 300px;
    cursor: pointer;
}

.portfolio-image {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
    padding: 2rem;
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-item:hover .portfolio-image {
    transform: scale(1.1);
}

.portfolio-overlay h3 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.portfolio-overlay p {
    color: var(--gray-text);
    margin-bottom: 1.5rem;
}

.portfolio-btn {
    padding: 0.8rem 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.portfolio-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
    gap: 1rem;
}

/* ===================================
   Testimonials Section
   =================================== */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: 20px;
    transition: var(--transition);
    position: relative;
}

.testimonial-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.3);
}

.quote-icon {
    font-size: 3rem;
    color: var(--primary-color);
    opacity: 0.3;
    margin-bottom: 1rem;
}

.testimonial-text {
    color: var(--gray-text);
    line-height: 1.8;
    margin-bottom: 2rem;
    font-size: 1.05rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-name {
    color: var(--light-text);
    margin-bottom: 0.25rem;
}

.author-role {
    color: var(--gray-text);
    font-size: 0.9rem;
}

/* ===================================
   Contact Section
   =================================== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-icon {
    width: 60px;
    height: 60px;
    border-radius: 15px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-color);
    flex-shrink: 0;
}

.contact-details h3 {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

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

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

.contact-form-container {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    padding: 3rem;
    border-radius: 20px;
}

.contact-form .form-group {
    margin-bottom: 1.5rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    color: var(--light-text);
    font-family: var(--font-secondary);
    font-size: 1rem;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.08);
}

.contact-form textarea {
    resize: vertical;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: transparent;
    padding: 2rem 0;
    border-top: 1px solid var(--glass-border);
    position: relative;
    z-index: 2;
}

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

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-text);
    text-decoration: none;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 968px) {
    .hero-section {
        padding: 10rem 2rem 6rem;
        min-height: 100vh;
        justify-content: flex-start;
    }

    .hero-content {
        margin-top: 2rem;
    }

    .hero-cta {
        margin-bottom: 1.5rem;
    }

    .scroll-indicator {
        display: none;
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        flex-direction: column;
        background: rgba(15, 23, 42, 0.95);
        backdrop-filter: blur(10px);
        width: 100%;
        padding: 2rem;
        gap: 1rem;
        transition: var(--transition);
        border-top: 1px solid var(--glass-border);
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .navbar {
        padding: 1rem 0;
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

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

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

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

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

    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 600px) {
    .hero-section {
        padding: 9rem 1.5rem 5rem;
    }

    .hero-content {
        width: 100%;
        max-width: 100%;
        padding: 0;
    }

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

    .hero-role {
        font-size: 1.3rem;
        min-height: 60px;
    }

    .hero-description {
        font-size: 1rem;
        padding: 0 0.5rem;
        margin-bottom: 2rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
        width: 100%;
        max-width: 100%;
        padding: 0 0.5rem;
    }

    .btn {
        text-align: center;
        padding: 0.9rem 2rem;
        width: 100%;
        display: block;
        white-space: nowrap;
        overflow: visible;
    }

    .social-links {
        margin-top: 1.5rem;
        gap: 0.8rem;
    }

    .social-icon {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }

    .contact-form-container {
        padding: 2rem 1.5rem;
    }

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

    section {
        padding: 4rem 0;
    }

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

    .logo-text {
        font-size: 1.5rem;
    }

    .logo-accent {
        font-size: 1.7rem;
    }

    .navbar {
        padding: 0.8rem 0;
    }

    .nav-container {
        padding: 0 1.5rem;
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary-color), var(--accent-color));
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}