/* ===== CSS Variables ===== */
:root {
    /* Colors */
    --color-bg-primary: #0a0e27;
    --color-bg-secondary: #151932;
    --color-text-primary: #e4e4e7;
    --color-text-secondary: #a1a1aa;
    --color-aws-orange: #FF9900;
    --color-cloud-blue: #00A1C9;
    --color-purple: #8B5CF6;

    /* Glass effect */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Typography */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;

    /* Border radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

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

html {
    scroll-behavior: smooth;
}

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

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

.section {
    padding: var(--spacing-4xl) 0;
}

.section-title {
    font-size: var(--text-4xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    background: linear-gradient(135deg, var(--color-aws-orange), var(--color-cloud-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== Glass Card Effect ===== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
}

/* ===== Gradient Text ===== */
.gradient-text {
    background: linear-gradient(135deg, var(--color-aws-orange), var(--color-cloud-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight {
    color: var(--color-aws-orange);
    font-weight: 600;
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-lg) 0;
    transition: all var(--transition-base);
}

.header.scrolled {
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

.logo {
    font-size: var(--text-2xl);
    font-weight: 700;
}

.logo-text {
    margin-right: var(--spacing-xs);
}

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

.nav {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
    background: none;
    border: none;
    cursor: pointer;
    font-size: var(--text-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-aws-orange);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--color-aws-orange);
    border-radius: 50%;
    animation: float 20s infinite;
}

.particle-1 {
    top: 20%;
    left: 20%;
    animation-delay: 0s;
}

.particle-2 {
    top: 40%;
    left: 60%;
    animation-delay: 2s;
}

.particle-3 {
    top: 60%;
    left: 30%;
    animation-delay: 4s;
}

.particle-4 {
    top: 80%;
    left: 70%;
    animation-delay: 6s;
}

.particle-5 {
    top: 30%;
    left: 80%;
    animation-delay: 8s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) translateX(0);
    }

    25% {
        transform: translateY(-20px) translateX(10px);
    }

    50% {
        transform: translateY(-40px) translateX(-10px);
    }

    75% {
        transform: translateY(-20px) translateX(10px);
    }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    animation: fadeInUp 1s ease;
}

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

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

.hero-title {
    font-size: var(--text-5xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: var(--text-xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    font-weight: 400;
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    font-size: var(--text-base);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-aws-orange), var(--color-cloud-blue));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 153, 0, 0.3);
}

.btn-secondary {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--color-text-primary);
}

.btn-secondary:hover {
    border-color: var(--color-aws-orange);
    background: rgba(255, 153, 0, 0.1);
}

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

.cloud-icon-container {
    width: 300px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cloud-icon svg {
    width: 100%;
    height: 100%;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--color-text-secondary);
    border-radius: 15px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 10px;
    background: var(--color-aws-orange);
    border-radius: 2px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }

    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
}

/* ===== About Section ===== */
.about {
    background: var(--color-bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
}

.about-card {
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.about-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-aws-orange);
}

.about-icon {
    width: 60px;
    height: 60px;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-aws-orange), var(--color-cloud-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.about-icon svg {
    width: 100%;
    height: 100%;
    color: var(--color-bg-primary);
}

.about-card h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.about-card p {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ===== Timeline ===== */
.journey-timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.journey-timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--color-aws-orange), var(--color-cloud-blue));
}

.timeline-item {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.timeline-dot {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-aws-orange), var(--color-cloud-blue));
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.timeline-content {
    flex: 1;
    padding: var(--spacing-lg);
}

.timeline-content h4 {
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.timeline-content p {
    color: var(--color-text-secondary);
}

/* ===== Skills Section ===== */
.skills {
    background: var(--color-bg-primary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: 0;
}

.highlights-section {
    margin-top: var(--spacing-4xl);
    padding-top: var(--spacing-2xl);
}

.skill-category {
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.skill-category:hover {
    transform: translateY(-5px);
    border-color: var(--color-aws-orange);
}

.category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.category-icon {
    width: 50px;
    height: 50px;
    padding: var(--spacing-sm);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-aws-orange), var(--color-cloud-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.category-icon svg {
    width: 100%;
    height: 100%;
    color: var(--color-bg-primary);
}

.category-header h3 {
    font-size: var(--text-xl);
    color: var(--color-text-primary);
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-tag {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 153, 0, 0.1);
    border: 1px solid rgba(255, 153, 0, 0.3);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.skill-tag:hover {
    background: rgba(255, 153, 0, 0.2);
    border-color: var(--color-aws-orange);
    color: var(--color-text-primary);
    transform: translateY(-2px);
}

.skill-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-aws-orange);
}

.skills-highlight {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.highlight-card {
    padding: var(--spacing-xl);
    text-align: center;
    background: linear-gradient(135deg, rgba(255, 153, 0, 0.1), rgba(0, 161, 201, 0.1));
    border: 2px solid var(--glass-border);
}

.highlight-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-aws-orange), var(--color-cloud-blue));
    display: flex;
    align-items: center;
    justify-content: center;
}

.highlight-icon svg {
    width: 100%;
    height: 100%;
    color: var(--color-bg-primary);
}

.highlight-card h3 {
    font-size: var(--text-2xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.highlight-card p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    font-size: var(--text-lg);
}

.highlight-card strong {
    color: var(--color-aws-orange);
    font-weight: 600;
}

/* ===== Projects Section ===== */
.projects {
    background: var(--color-bg-secondary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.project-card {
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.project-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-aws-orange);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.project-header h3 {
    font-size: var(--text-xl);
    color: var(--color-text-primary);
}

.github-link {
    width: 30px;
    height: 30px;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.github-link:hover {
    color: var(--color-aws-orange);
}

.github-link svg {
    width: 100%;
    height: 100%;
}

.project-description {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.project-section {
    margin-bottom: var(--spacing-lg);
}

.project-section h4 {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
}

.tech-tags,
.arch-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tech-tag,
.arch-tag {
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 153, 0, 0.1);
    border: 1px solid rgba(255, 153, 0, 0.3);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

.project-highlights {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

.highlight-item svg {
    width: 16px;
    height: 16px;
    color: var(--color-aws-orange);
    flex-shrink: 0;
}

/* ===== Contact Section ===== */
.contact {
    background: var(--color-bg-primary);
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact-intro {
    text-align: center;
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-3xl);
    line-height: 1.8;
}

.social-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-3xl);
}

.social-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    text-decoration: none;
    transition: all var(--transition-base);
}

.social-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-aws-orange);
}

.social-icon {
    width: 60px;
    height: 60px;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.social-icon.linkedin {
    background: linear-gradient(135deg, #0077B5, #00A0DC);
}

.social-icon.github {
    background: linear-gradient(135deg, #333, #666);
}

.social-icon.email {
    background: linear-gradient(135deg, var(--color-aws-orange), var(--color-cloud-blue));
}

.social-icon svg {
    width: 100%;
    height: 100%;
    color: white;
}

.social-info h3 {
    font-size: var(--text-lg);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.social-info p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--glass-border);
}

.footer-bottom p {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-visual {
        order: -1;
    }

    .cloud-icon-container {
        width: 200px;
        height: 200px;
    }

    .hero-title {
        font-size: var(--text-3xl);
    }

    .hero-subtitle {
        font-size: var(--text-lg);
    }

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

    .nav {
        gap: var(--spacing-md);
    }

    .nav-link {
        font-size: var(--text-sm);
    }

    .section-title {
        font-size: var(--text-3xl);
    }

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

    .journey-timeline::before {
        left: 10px;
    }

    .timeline-dot {
        width: 20px;
        height: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

    .hero-title {
        font-size: var(--text-2xl);
    }
}