/* Reset and Base Styles */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7b;
    --accent-primary: #ef4444;
    --accent-secondary: #f87171;
    --accent-glow: rgba(239, 68, 68, 0.3);
    --border-color: #2a2a3a;
    --card-bg: #16161f;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1.25rem;
}

.logo-icon {
    color: var(--accent-primary);
    font-size: 1.5rem;
    text-shadow: 0 0 20px var(--accent-glow);
}

.logo-text {
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width var(--transition-normal);
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 24px 80px;
    max-width: 1200px;
    margin: 0 auto;
    gap: 60px;
}

.hero-content {
    flex: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.highlight {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 40px var(--accent-glow);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: 40px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 280px;
    height: 500px;
    background: linear-gradient(145deg, #2a2a3a 0%, #1a1a25 100%);
    border-radius: 40px;
    padding: 12px;
    box-shadow: 
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    border-radius: 32px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.app-icon-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding: 40px;
}

.app-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 32px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    animation: float 3s ease-in-out infinite;
}

.app-icon:nth-child(1) { animation-delay: 0s; }
.app-icon:nth-child(2) { animation-delay: 0.5s; }
.app-icon:nth-child(3) { animation-delay: 1s; }

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

/* Projects Section */
.projects {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 60px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 32px;
}

.project-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 32px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-primary);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 40px var(--accent-glow);
}

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

.project-icon {
    width: 72px;
    height: 72px;
    border-radius: 18px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.icon-emoji {
    font-size: 36px;
}

.icon-image {
    width: 48px;
    height: 48px;
    object-fit: contain;
    border-radius: 4px;
}

.project-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.project-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.project-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.project-features li {
    background: var(--bg-tertiary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-primary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.project-link:hover {
    gap: 12px;
    color: var(--accent-secondary);
}

.project-link svg {
    transition: transform var(--transition-fast);
}

.project-link:hover svg {
    transform: translate(4px, -4px);
}

/* Technology Section */
.technology {
    padding: 100px 0;
    background: var(--bg-primary);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.tech-item:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    background: var(--card-bg);
}

.tech-icon {
    font-size: 2rem;
}

.tech-item span {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Contact Section */
.contact {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    gap: 48px;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.contact-item:hover {
    border-color: var(--accent-primary);
}

.contact-icon {
    font-size: 2rem;
    width: 56px;
    height: 56px;
    background: var(--bg-tertiary);
    border-radius: 14px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.contact-item h4 {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 4px;
    font-weight: 500;
}

.contact-item a,
.contact-item span {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 500;
}

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

.contact-cta {
    text-align: center;
    padding: 48px;
    background: var(--bg-tertiary);
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.contact-cta p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    color: white;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 12px;
    transition: all var(--transition-normal);
    box-shadow: 0 10px 30px var(--accent-glow);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px var(--accent-glow);
}

.cta-button svg {
    transition: transform var(--transition-fast);
}

.cta-button:hover svg {
    transform: translateX(4px);
}

/* Footer */
.footer {
    padding: 40px 0;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1.125rem;
}

.footer-text {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 100px;
    }

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

    .hero-subtitle {
        max-width: 100%;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
    }

    .phone-mockup {
        width: 220px;
        height: 400px;
    }

    .app-icon {
        width: 52px;
        height: 52px;
        font-size: 26px;
    }

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

@media (max-width: 640px) {
    .nav-links {
        display: none;
    }

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

    .hero-stats {
        flex-wrap: wrap;
        gap: 24px;
    }

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

    .project-card {
        padding: 24px;
    }

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

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

/* Scroll Animations */
.project-card,
.tech-item,
.contact-item {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

.project-card.visible,
.tech-item.visible,
.contact-item.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Smooth scroll offset for fixed header */
section[id] {
    scroll-margin-top: 80px;
}