/* ===== CSS Variables ===== */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #0f0f18;
    --bg-card: #141420;
    --bg-card-hover: #1a1a2e;
    --text-primary: #e8e8f0;
    --text-secondary: #9898b0;
    --text-muted: #6868808c;
    --accent: #6c63ff;
    --accent-light: #8b83ff;
    --accent-glow: rgba(108, 99, 255, 0.3);
    --accent-2: #00d4aa;
    --accent-2-glow: rgba(0, 212, 170, 0.3);
    --gradient-1: linear-gradient(135deg, #6c63ff, #00d4aa);
    --gradient-2: linear-gradient(135deg, #6c63ff 0%, #8b83ff 50%, #00d4aa 100%);
    --border-color: rgba(108, 99, 255, 0.15);
    --border-hover: rgba(108, 99, 255, 0.4);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-card-hover: 0 8px 40px rgba(108, 99, 255, 0.15);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--accent-light);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--accent-2);
}

::selection {
    background: var(--accent);
    color: #fff;
}

/* ===== Particle Canvas ===== */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ===== Container ===== */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

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

#navbar.scrolled {
    border-bottom-color: var(--border-color);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary) !important;
    letter-spacing: -0.5px;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-links a {
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition);
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
    background: rgba(108, 99, 255, 0.1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition);
}

/* ===== Hero Section ===== */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 24px 80px;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-greeting {
    font-size: 1.1rem;
    color: var(--accent);
    font-weight: 500;
    margin-bottom: 12px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
    font-family: var(--font-mono);
}

.hero-name {
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease 0.15s forwards;
}

.hero-name .first-name {
    display: block;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-name .last-name {
    display: block;
    color: var(--text-primary);
}

.hero-titles {
    font-family: var(--font-mono);
    font-size: 1.15rem;
    color: var(--accent-2);
    margin-bottom: 24px;
    min-height: 32px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease 0.3s forwards;
}

.cursor {
    animation: blink 1s infinite;
    color: var(--accent);
    font-weight: 300;
}

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

.hero-summary {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 36px;
    line-height: 1.8;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease 0.45s forwards;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease 0.6s forwards;
}

.hero-social {
    display: flex;
    gap: 16px;
    justify-content: center;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease 0.75s forwards;
}

.hero-social a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 1.1rem;
    transition: all var(--transition);
}

.hero-social a:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: rgba(108, 99, 255, 0.1);
    transform: translateY(-3px);
    box-shadow: 0 4px 20px var(--accent-glow);
}

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

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    opacity: 0;
    animation: fadeInUp 0.6s ease 1s forwards;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--text-muted);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.wheel {
    width: 3px;
    height: 8px;
    background: var(--accent);
    border-radius: 3px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 1; transform: translateY(0); }
    100% { opacity: 0; transform: translateY(12px); }
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-1);
    color: #fff;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px var(--accent-glow);
    color: #fff;
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    border-color: var(--accent);
    background: rgba(108, 99, 255, 0.05);
    color: var(--accent-light);
    transform: translateY(-2px);
}

/* ===== Sections ===== */
.section {
    padding: 100px 0;
    position: relative;
    z-index: 1;
}

.section-alt {
    background: var(--bg-secondary);
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
    position: relative;
    padding-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-1);
    border-radius: 3px;
}

.section-description {
    text-align: center;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 16px auto 48px;
    font-size: 1.05rem;
}

/* ===== About Section ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    margin-top: 48px;
    align-items: start;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 1.02rem;
}

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

.about-highlights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 32px;
}

.highlight-item {
    text-align: center;
    padding: 20px 12px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.highlight-number {
    font-size: 2.2rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight-suffix {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight-label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 4px;
}

.about-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

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

.detail-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card-hover);
}

.detail-card i {
    font-size: 1.3rem;
    color: var(--accent);
    width: 20px;
    text-align: center;
}

.detail-card strong {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.detail-card span,
.detail-card a {
    font-size: 0.95rem;
    color: var(--text-primary);
}

/* ===== Skills Section ===== */
.skills-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.skill-category {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 28px;
    transition: all var(--transition);
}

.skill-category:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.category-header i {
    font-size: 1.3rem;
    color: var(--accent);
}

.category-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tag {
    padding: 6px 14px;
    background: rgba(108, 99, 255, 0.08);
    border: 1px solid rgba(108, 99, 255, 0.15);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.skill-tag:hover {
    background: rgba(108, 99, 255, 0.15);
    color: var(--text-primary);
    border-color: rgba(108, 99, 255, 0.3);
}

/* ===== Timeline / Experience ===== */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 48px auto 0;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent), var(--accent-2), transparent);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.5s ease;
}

.timeline-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.timeline-marker {
    position: absolute;
    left: -36px;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
    z-index: 1;
}

.timeline-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    transition: all var(--transition);
}

.timeline-content:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card-hover);
}

.timeline-header h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.timeline-company {
    color: var(--accent-light);
    font-weight: 600;
    font-size: 0.95rem;
}

.timeline-location {
    display: inline-block;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-left: 8px;
}

.timeline-location i {
    margin-right: 4px;
}

.timeline-date {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-2);
    margin: 8px 0 12px;
    padding: 3px 10px;
    background: rgba(0, 212, 170, 0.1);
    border-radius: 4px;
}

.timeline-details {
    list-style: none;
    padding: 0;
}

.timeline-details li {
    position: relative;
    padding-left: 16px;
    color: var(--text-secondary);
    font-size: 0.93rem;
    margin-bottom: 6px;
}

.timeline-details li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0.6;
}

/* ===== Projects Section ===== */
.projects-subtitle {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: center;
    margin: 48px 0 24px;
}

.projects-subtitle:first-of-type {
    margin-top: 32px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 28px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
    opacity: 0;
    transition: opacity var(--transition);
}

.project-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-6px);
}

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

.project-card.featured {
    border-color: rgba(108, 99, 255, 0.25);
}

.project-card.featured::before {
    opacity: 0.5;
}

.project-icon {
    font-size: 1.8rem;
    color: var(--accent);
    margin-bottom: 16px;
}

.project-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 3px 10px;
    background: rgba(108, 99, 255, 0.15);
    color: var(--accent-light);
    border-radius: 20px;
    border: 1px solid rgba(108, 99, 255, 0.25);
}

.project-card h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.project-card p {
    color: var(--text-secondary);
    font-size: 0.93rem;
    margin-bottom: 16px;
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 16px;
}

.project-tech span {
    padding: 4px 10px;
    background: rgba(0, 212, 170, 0.08);
    border: 1px solid rgba(0, 212, 170, 0.15);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-2);
}

.project-links {
    display: flex;
    gap: 16px;
}

.project-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color var(--transition);
}

.project-links a:hover {
    color: var(--accent);
}

.project-links .fa-app-store-ios {
    font-size: 1.1rem;
}

.projects-subtitle i.fab {
    margin-right: 6px;
}

/* ===== YouTube Section ===== */
.youtube-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.youtube-card {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all var(--transition);
    background: var(--bg-card);
}

.youtube-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-6px);
}

.youtube-thumb {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.youtube-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}

.youtube-card:hover .youtube-thumb img {
    transform: scale(1.05);
}

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(108, 99, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff !important;
    font-size: 1.2rem;
    transition: all var(--transition);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.play-btn:hover {
    background: var(--accent);
    transform: translate(-50%, -50%) scale(1.1);
    box-shadow: 0 6px 30px var(--accent-glow);
}

.play-btn i {
    margin-left: 3px;
}

.youtube-cta {
    text-align: center;
    margin-top: 40px;
}

/* ===== Certifications ===== */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-top: 48px;
}

.cert-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.cert-card:hover {
    border-color: var(--border-hover);
    transform: translateX(4px);
}

.cert-card i {
    color: var(--accent-2);
    font-size: 1.1rem;
    flex-shrink: 0;
}

.cert-card span {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ===== Contact Section ===== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 36px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    transition: all var(--transition);
    color: var(--text-primary) !important;
}

.contact-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-6px);
}

.contact-card i {
    font-size: 2rem;
    color: var(--accent);
    margin-bottom: 16px;
    transition: transform var(--transition);
}

.contact-card:hover i {
    transform: scale(1.2);
}

.contact-card strong {
    font-size: 1rem;
    margin-bottom: 4px;
}

.contact-card span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ===== Footer ===== */
footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 32px 0;
    position: relative;
    z-index: 1;
}

.footer-content {
    text-align: center;
}

.footer-logo {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    display: block;
    margin-bottom: 8px;
}

footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===== Reveal Animations ===== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        gap: 4px;
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all var(--transition);
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .nav-links a {
        padding: 12px 16px;
        font-size: 1rem;
    }

    #hero {
        padding: 100px 20px 60px;
    }

    .hero-name {
        font-size: clamp(2.5rem, 10vw, 3.5rem);
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .about-highlights {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }

    .highlight-number {
        font-size: 1.8rem;
    }

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

    .timeline {
        padding-left: 30px;
    }

    .timeline-marker {
        left: -26px;
    }

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

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

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

@media (max-width: 480px) {
    .about-highlights {
        grid-template-columns: 1fr;
    }

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

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

    .btn {
        width: 100%;
        justify-content: center;
        max-width: 280px;
    }
}