/* ========================
   CSS Variables & Reset
   ======================== */
:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #0f3460;
    --highlight-color: #e94560;
    --light-color: #f5f5f5;
    --text-dark: #2d3436;
    --text-light: #636e72;
    --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%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
    --transition-fast: all 0.2s ease;
    --transition-normal: all 0.3s ease;
    --transition-slow: all 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(to bottom, #f8f9fa, #ffffff);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ========================
   Particle Background
   ======================== */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.particle {
    position: absolute;
    background: var(--gradient-3);
    border-radius: 50%;
    opacity: 0.15;
    animation: float 20s infinite ease-in-out;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-100px) rotate(180deg); }
}

/* ========================
   Container & Utilities
   ======================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================
   Header & Navigation
   ======================== */
header {
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
    border-bottom: 2px solid rgba(233, 69, 96, 0.3);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.6rem;
    font-weight: 700;
    color: white;
    text-decoration: none;
}

.logo-icon {
    background: var(--gradient-2);
    padding: 0.5rem;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.logo-text {
    color: white;
}

.logo-text .highlight {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: var(--transition-normal);
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

nav ul li a:hover {
    background: rgba(233, 69, 96, 0.2);
    color: var(--highlight-color);
    transform: translateY(-2px);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    transition: var(--transition-normal);
}

.mobile-menu-btn:hover {
    color: var(--highlight-color);
    transform: scale(1.1);
}

/* ========================
   Hero Section
   ======================== */
.hero {
    position: relative;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: white;
    padding: 8rem 0 6rem;
    text-align: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.05" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,122.7C672,117,768,139,864,144C960,149,1056,139,1152,122.7C1248,107,1344,85,1392,74.7L1440,64L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') bottom/cover no-repeat;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease;
}

.wave {
    display: inline-block;
    animation: wave 2s infinite;
}

@keyframes wave {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(20deg); }
    75% { transform: rotate(-20deg); }
}

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

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--gradient-2);
    color: white;
    box-shadow: 0 4px 15px rgba(233, 69, 96, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(233, 69, 96, 0.5);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

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

.scroll-indicator {
    margin-top: 3rem;
    animation: bounce 2s infinite;
}

.scroll-indicator i {
    font-size: 2rem;
    color: white;
    opacity: 0.7;
}

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

/* ========================
   Stats Section
   ======================== */
.stats-section {
    padding: 4rem 0;
    background: white;
    box-shadow: var(--shadow-sm);
}

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

.stat-card {
    text-align: center;
    padding: 2rem;
    border-radius: 15px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    transition: var(--transition-normal);
}

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

.stat-icon {
    font-size: 3rem;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-light);
    font-weight: 500;
}

/* ========================
   Section Headers
   ======================== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-2);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================
   Projects Section
   ======================== */
.projects-section {
    padding: 5rem 0;
    background: linear-gradient(to bottom, #ffffff, #f8f9fa);
}

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

.project-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    position: relative;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-2);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

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

.project-preview {
    position: relative;
    height: 250px;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.project-preview iframe {
    width: 100%;
    height: 100%;
    border: none;
    transition: var(--transition-slow);
}

.project-card:hover .project-preview iframe {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.preview-btn {
    background: white;
    color: var(--primary-color);
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-normal);
}

.preview-btn:hover {
    background: var(--gradient-2);
    color: white;
    transform: scale(1.1);
}

.project-info {
    padding: 2rem;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.tag {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.tag.collab {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.project-info h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.project-info p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

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

.project-link:hover {
    gap: 1rem;
}

.project-link i {
    transition: var(--transition-normal);
}

.project-link:hover i {
    transform: translateX(5px);
}

/* ========================
   Collaborator Section
   ======================== */
.collaborator-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.collaborator-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 3rem;
}

.toggle-btn {
    background: var(--gradient-2);
    color: white;
    border: none;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 15px rgba(233, 69, 96, 0.3);
    transition: var(--transition-normal);
}

.toggle-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(233, 69, 96, 0.4);
}

.toggle-btn i {
    transition: var(--transition-normal);
}

.toggle-btn:hover i {
    animation: heartbeat 1s infinite;
}

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

.collaborator-projects {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.8s ease;
}

.collaborator-projects.show {
    max-height: 10000px;
}

/* ========================
   Social Section
   ======================== */
.social-section {
    padding: 5rem 0;
    background: white;
}

.social-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    max-width: 800px;
    margin: 0 auto;
}

.social-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 3rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
    color: white;
}

.social-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
}

.social-avatar {
    font-size: 5rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.social-card h3 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.social-role {
    opacity: 0.9;
    margin-bottom: 2rem;
    font-size: 1rem;
}

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

.social-btn {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    font-size: 1.3rem;
    transition: var(--transition-normal);
}

.social-btn:hover {
    background: white;
    transform: translateY(-5px) rotate(360deg);
}

.social-btn.facebook:hover {
    color: #1877f2;
}

.social-btn.instagram:hover {
    color: #e1306c;
}

.social-btn.tiktok:hover {
    color: #000000;
}

/* ========================
   Footer
   ======================== */
footer {
    background: var(--primary-color);
    color: white;
    padding: 3rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-text p {
    margin-bottom: 0.5rem;
}

.footer-tagline {
    opacity: 0.8;
}

.footer-tagline i {
    color: var(--highlight-color);
    animation: pulse 2s infinite;
}

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

.footer-links a {
    color: white;
    text-decoration: none;
    transition: var(--transition-normal);
}

.footer-links a:hover {
    color: var(--highlight-color);
}

/* ========================
   Scroll to Top Button
   ======================== */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-2);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
}

/* ========================
   Animations
   ======================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

[data-aos="zoom-in"] {
    transform: scale(0.8);
}

[data-aos="zoom-in"].aos-animate {
    transform: scale(1);
}

/* ========================
   Responsive Design
   ======================== */
@media (max-width: 968px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2.2rem;
    }

    .projects-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 2rem;
    }

    .collaborator-header {
        flex-direction: column;
        text-align: center;
    }

    .collaborator-header .section-header {
        margin-bottom: 0;
    }
}

@media (max-width: 768px) {
    nav ul {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(26, 26, 46, 0.98);
        flex-direction: column;
        padding: 2rem;
        gap: 0;
        transition: left 0.3s ease;
    }

    nav ul.active {
        left: 0;
    }

    nav ul li {
        width: 100%;
        margin-bottom: 1rem;
    }

    nav ul li a {
        display: block;
        padding: 1rem;
        text-align: center;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero {
        padding: 5rem 0 4rem;
    }

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

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

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 1.5rem;
    }

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

    .social-container {
        grid-template-columns: 1fr;
    }

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

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }

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

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .project-info {
        padding: 1.5rem;
    }
}

/* ========================
   Print Styles
   ======================== */
@media print {
    header,
    .hero,
    .scroll-top,
    .mobile-menu-btn {
        display: none;
    }

    .project-card {
        page-break-inside: avoid;
    }
}