/* ============================================
   PORTFOLIO WEBSITE - PREMIUM CSS
   ============================================ */

/* ============ ROOT VARIABLES ============ */
:root {
    /* Color Palette */
    --primary-color: #00d9ff;        /* Cyan accent */
    --secondary-color: #ff006e;      /* Pink accent */
    --dark-bg: #0a0e27;              /* Deep navy */
    --darker-bg: #050812;            /* Darker navy */
    --light-text: #e8e8f0;           /* Off-white */
    --muted-text: #a0a0b0;           /* Muted gray */
    --card-bg: #141829;              /* Card background */
    --border-color: #2a2e45;         /* Border color */

    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Syne', sans-serif;
    --font-mono: 'Space Mono', monospace;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s 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-primary);
    background-color: var(--dark-bg);
    color: var(--light-text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Smooth scrollbar styling */
::-webkit-scrollbar {
    width: 10px;
}

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

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

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

/* ============ CONTAINER ============ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============ NAVIGATION BAR ============ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 217, 255, 0.1);
    transition: all var(--transition-smooth);
    padding: var(--spacing-sm) 0;
}

.navbar.scrolled {
    background: rgba(10, 14, 39, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.3rem;
    font-weight: 700;
    font-family: var(--font-secondary);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-2xl);
}

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

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

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

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

/* Menu Toggle for Mobile */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(10px, 10px);
}

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

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

/* ============ HERO SECTION ============ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px var(--spacing-lg) 60px;
    position: relative;
    overflow: hidden;
    margin-top: 60px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    width: 100%;
    max-width: 1400px;
    z-index: 2;
}

.hero-text {
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-title {
    font-family: var(--font-secondary);
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
    color: var(--light-text);
}

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

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--muted-text);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.hero-subtitle strong {
    color: var(--primary-color);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.btn {
    padding: 14px 35px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all var(--transition-smooth);
    font-family: var(--font-primary);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #00b8d4);
    color: var(--darker-bg);
    box-shadow: 0 4px 15px rgba(0, 217, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 217, 255, 0.5);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--darker-bg);
    transform: translateY(-2px);
}

/* Hero Image */
.hero-image {
    position: relative;
    animation: fadeInRight 0.8s ease-out 0.4s both;
}

.image-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 3/4;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 217, 255, 0.15);
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.image-wrapper:hover .profile-image {
    transform: scale(1.05);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(255, 0, 110, 0.1));
    pointer-events: none;
}

/* Hero Background Orbs */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
}

.gradient-orb-1 {
    width: 600px;
    height: 600px;
    background: linear-gradient(135deg, var(--primary-color), transparent);
    top: -200px;
    right: -100px;
    animation: float 6s ease-in-out infinite;
}

.gradient-orb-2 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, var(--secondary-color), transparent);
    bottom: -100px;
    left: -100px;
    animation: float 8s ease-in-out infinite reverse;
}

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

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

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

/* ============ PORTFOLIO SECTION ============ */
.portfolio {
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: linear-gradient(180deg, var(--dark-bg) 0%, var(--darker-bg) 100%);
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-family: var(--font-secondary);
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color), var(--light-text));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--muted-text);
    max-width: 500px;
    margin: 0 auto;
}

/* Filter Buttons */
.filter-container {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    border: 2px solid var(--border-color);
    background: transparent;
    color: var(--light-text);
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: all var(--transition-smooth);
    font-family: var(--font-primary);
    font-size: 0.95rem;
}

.filter-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.filter-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--darker-bg);
    box-shadow: 0 4px 15px rgba(0, 217, 255, 0.3);
}

/* Portfolio Grid */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.portfolio-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition-smooth);
    animation: slideUp 0.6s ease-out;
}

.portfolio-item.hidden {
    display: none;
}

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

.portfolio-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 217, 255, 0.2);
}

.portfolio-thumbnail {
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--darker-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.portfolio-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-smooth);
}

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

.play-icon {
    position: absolute;
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    transition: all var(--transition-smooth);
    z-index: 10;
}

.portfolio-item:hover .play-icon {
    transform: scale(1.2);
    background: var(--secondary-color);
}

.portfolio-info {
    padding: var(--spacing-md);
}

.portfolio-category {
    font-size: 0.85rem;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.portfolio-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--light-text);
}

.portfolio-description {
    font-size: 0.95rem;
    color: var(--muted-text);
    line-height: 1.5;
}

/* ============ ABOUT SECTION ============ */
.about {
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: var(--darker-bg);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
    max-width: 1200px;
    margin: 0 auto;
}

.about-text {
    padding-right: var(--spacing-lg);
}

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

.skills-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--light-text);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.skill-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    border-radius: 12px;
    text-align: center;
    transition: all var(--transition-smooth);
}

.skill-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 217, 255, 0.2);
}

.skill-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.skill-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--light-text);
}

.skill-card p {
    font-size: 0.9rem;
    color: var(--muted-text);
}

/* ============ CONTACT SECTION ============ */
.contact {
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: linear-gradient(180deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    max-width: 1200px;
    margin: 0 auto;
    margin-top: var(--spacing-2xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.info-item h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--light-text);
}

.info-item a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
    display: inline-block;
}

.info-item a:hover {
    color: var(--secondary-color);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    width: 50px;
    height: 50px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-text);
    transition: all var(--transition-smooth);
    background: var(--card-bg);
}

.social-links a:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 217, 255, 0.2);
}

.social-links svg {
    width: 24px;
    height: 24px;
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    background: var(--card-bg);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group input,
.form-group textarea {
    background: var(--darker-bg);
    border: 1px solid var(--border-color);
    color: var(--light-text);
    padding: 12px 16px;
    border-radius: 8px;
    font-family: var(--font-primary);
    transition: all var(--transition-smooth);
    font-size: 1rem;
}

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

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(0, 217, 255, 0.05);
    box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.1);
}

.contact-form > .btn {
    margin-top: var(--spacing-sm);
}

.form-message {
    padding: var(--spacing-sm);
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.form-message.success {
    background: rgba(0, 217, 255, 0.2);
    color: var(--primary-color);
    display: block;
}

.form-message.error {
    background: rgba(255, 0, 110, 0.2);
    color: var(--secondary-color);
    display: block;
}

/* ============ FOOTER ============ */
.footer {
    padding: var(--spacing-xl) var(--spacing-lg);
    background: var(--darker-bg);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-content p {
    font-size: 0.95rem;
    color: var(--muted-text);
    margin: var(--spacing-xs) 0;
}

.heart {
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* ============ RESPONSIVE DESIGN ============ */

/* Tablets (768px to 1024px) */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .hero-title {
        font-size: 2.8rem;
    }

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

    .about-text {
        padding-right: 0;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .hero-image {
        max-width: 500px;
        margin: 0 auto;
    }

    .image-wrapper {
        aspect-ratio: 1;
    }
}

/* Mobile (below 768px) */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 2.5rem;
    }

    /* Navigation */
    .nav-menu {
        gap: var(--spacing-lg);
    }

    .nav-link {
        font-size: 0.9rem;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-menu.mobile-active {
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10, 14, 39, 0.98);
        padding: var(--spacing-lg);
        gap: var(--spacing-sm);
        border-bottom: 1px solid var(--border-color);
    }

    /* Hero */
    .hero {
        margin-top: 50px;
        padding: 80px var(--spacing-md) 40px;
    }

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

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

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

    .btn {
        width: 100%;
        text-align: center;
    }

    /* Portfolio */
    .portfolio {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

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

    .filter-container {
        gap: var(--spacing-xs);
    }

    .filter-btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    /* About */
    .about {
        padding: var(--spacing-xl) var(--spacing-md);
    }

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

    /* Contact */
    .contact {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .contact-form {
        padding: var(--spacing-md);
    }

    .social-links {
        justify-content: center;
    }

    /* Footer */
    .footer {
        padding: var(--spacing-lg) var(--spacing-md);
    }
}

/* Small Mobile (below 480px) */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.6rem;
    }

    .section-title {
        font-size: 1.6rem;
    }

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

    .portfolio-thumbnail {
        aspect-ratio: 1;
    }

    .navbar-container {
        padding: 0 var(--spacing-md);
    }

    .container {
        padding: 0 var(--spacing-md);
    }
}

/* ============ UTILITY CLASSES ============ */

/* AOS-like animations (fallback) */
[data-aos] {
    opacity: 0;
    animation: fadeInUp 0.6s ease-out forwards;
}

[data-aos="fade-up"] {
    animation: fadeInUp 0.6s ease-out forwards;
}

[data-aos="fade-left"] {
    animation: fadeInRight 0.6s ease-out forwards;
}

[data-aos="fade-right"] {
    animation: fadeInRight 0.6s ease-out forwards;
}

[data-aos-delay="100"] {
    animation-delay: 0.1s;
}

[data-aos-delay="200"] {
    animation-delay: 0.2s;
}

[data-aos-delay="300"] {
    animation-delay: 0.3s;
}

/* Smooth scrolling */
.smooth-scroll {
    scroll-behavior: smooth;
}