/* ===================================
   CSS Variables - Design System
   =================================== */
:root {
    /* Colors */
    --color-bg: #000000;
    --color-primary: #ff0000;
    --color-text-primary: #ffffff;
    --color-text-secondary: #9a9a9a;
    --color-border: #2a2a2a;
    --color-card-bg: rgba(255, 255, 255, 0.02);

    /* Typography */
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'DM Sans', sans-serif;

    /* Spacing */
    --spacing-xs: 0.4rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Sidebar */
    --sidebar-width: 320px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ===================================
   Layout Architecture
   =================================== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    padding: var(--spacing-lg) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin: var(--spacing-sm);
    overflow-y: auto;
    z-index: 100;
    /* Hide scrollbar but keep functionality */
    scrollbar-width: none;
    /* Firefox */
    -ms-overflow-style: none;
    /* IE and Edge */
}

.sidebar::-webkit-scrollbar {
    display: none;
    /* Chrome, Safari, Opera */
}

.sidebar-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    height: 100%;
}

.main-content {
    margin-left: calc(var(--sidebar-width) + var(--spacing-lg) * 2);
    padding: var(--spacing-xl) var(--spacing-2xl) var(--spacing-xl) var(--spacing-xl);
    max-width: 1100px;
}

/* ===================================
   Sidebar Components
   =================================== */
.sidebar-name {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xs);
}

.profile-image-container {
    width: 100%;
    max-width: 240px;
    margin: var(--spacing-sm) 0;
}

.profile-image {
    width: 100%;
    border-radius: var(--radius-md);
    aspect-ratio: 3/4;
    object-fit: cover;
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
    border: 2px solid var(--color-border);
}

.sidebar-email {
    color: var(--color-primary);
    font-size: 0.95rem;
    font-weight: 500;
    transition: opacity var(--transition-fast);
}

.sidebar-email:hover {
    opacity: 0.8;
}

.sidebar-location {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.social-icons {
    display: flex;
    gap: var(--spacing-xs);
    margin: var(--spacing-md) 0;
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.social-icon svg {
    width: 20px;
    height: 20px;
    color: var(--color-text-primary);
}

.social-icon:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.social-icon:hover svg {
    color: var(--color-primary);
}

/* ===================================
   Buttons
   =================================== */
.btn-primary {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-primary) 0%, #cc0000 100%);
    color: var(--color-text-primary);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
    margin-top: auto;
    box-shadow: 0 4px 15px rgba(255, 0, 0, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #ff3333 0%, var(--color-primary) 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 0, 0, 0.4);
}

.btn-secondary {
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
}

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

.btn-icon {
    width: 18px;
    height: 18px;
}

/* ===================================
   Section Styles
   =================================== */
.section {
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-2xl) 0;
    opacity: 0;
    transform: translateY(30px);
    transition: all var(--transition-slow);
}

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

.section-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-lg);
}

.section-heading {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    line-height: 1.2;
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero-heading {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.hero-subheading {
    font-size: 1.75rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.01em;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
}

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

.stats-row {
    display: flex;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.stat-card {
    flex: 1;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.75rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.floating-projects-btn {
    position: absolute;
    right: var(--spacing-2xl);
    top: 50%;
    transform: translateY(-50%);
    width: 140px;
    height: 140px;
    border-radius: 50%;
    border: 2px solid var(--color-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: 0.85rem;
    font-weight: 600;
    transition: all var(--transition-normal);
    animation: float 3s ease-in-out infinite;
}

.floating-projects-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-50%) scale(1.05);
}

.floating-projects-btn svg {
    width: 20px;
    height: 20px;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(-50%) translateX(0);
    }

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

/* ===================================
   About Section
   =================================== */
.about-quote {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-style: italic;
    line-height: 1.5;
    margin-bottom: var(--spacing-xl);
    color: var(--color-text-primary);
}

.about-description {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    max-width: 800px;
}

/* ===================================
   Resume Section
   =================================== */
.timeline {
    position: relative;
    padding-left: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--color-border);
}

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

.timeline-dot {
    position: absolute;
    left: calc(-1 * var(--spacing-xl) - 6px);
    top: 4px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background-color: var(--color-primary);
    border: 3px solid var(--color-bg);
}

.timeline-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.timeline-company {
    color: var(--color-text-secondary);
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
}

.timeline-period {
    color: var(--color-primary);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.timeline-description {
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 700px;
}

.resume-download {
    margin-top: var(--spacing-xl);
}

.resume-link {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 1.1rem;
    text-decoration: underline;
    transition: opacity var(--transition-fast);
}

.resume-link:hover {
    opacity: 0.8;
}

.resume-updated {
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    margin-top: var(--spacing-xs);
}

/* ===================================
   Services Section
   =================================== */
.service-cards {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.service-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background-color: var(--color-card-bg);
    transition: all var(--transition-normal);
}

.service-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    background-color: rgba(255, 0, 0, 0.05);
}

.service-content {
    flex: 1;
}

.service-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.service-description {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    max-width: 600px;
}

.service-projects {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.95rem;
}

.service-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    margin-left: var(--spacing-lg);
}

.service-icon svg {
    width: 40px;
    height: 40px;
    color: var(--color-primary);
}

/* ===================================
   Skills Section
   =================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.skill-oval {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    background-color: var(--color-card-bg);
    min-height: 280px;
    transition: all var(--transition-normal);
}

.skill-oval:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    background-color: rgba(255, 0, 0, 0.05);
}

.skill-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.skill-icon svg {
    width: 40px;
    height: 40px;
    color: var(--color-text-primary);
}

.skill-percentage {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.skill-techs {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.skill-techs span {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.skill-label {
    font-weight: 600;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-primary);
}

/* ===================================
   Portfolio Section
   =================================== */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-2xl) 0;
}

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

.project-card.hidden {
    display: none;
}

.project-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
}

.project-image {
    position: relative;
    width: 100%;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
}

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

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
}

.tech-pills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tech-pill {
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: rgba(255, 0, 0, 0.2);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary);
}

.project-title {
    padding: var(--spacing-md);
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0;
}

.project-description {
    padding: 0 var(--spacing-md) var(--spacing-md);
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.portfolio-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.load-more-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 2px;
    transition: all var(--transition-fast);
}

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

.github-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.github-link svg {
    width: 20px;
    height: 20px;
}

/* ===================================
   YouTube Section
   =================================== */
.youtube-embed {
    width: 100%;
    max-width: 900px;
    margin: var(--spacing-xl) 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.youtube-embed iframe {
    display: block;
    border-radius: var(--radius-lg);
}

.youtube-description {
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 700px;
}

/* ===================================
   Contact Section
   =================================== */
.contact-form {
    max-width: 800px;
    margin-top: var(--spacing-xl);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-md);
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: rgba(255, 0, 0, 0.05);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

/* ===================================
   Footer
   =================================== */
.footer {
    text-align: center;
    padding: var(--spacing-xl) 0;
    color: var(--color-text-secondary);
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-2xl);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1200px) {
    :root {
        --sidebar-width: 300px;
    }

    .hero-heading {
        font-size: 3rem;
    }

    .floating-projects-btn {
        position: static;
        transform: none;
        margin: var(--spacing-xl) auto 0;
    }
}

@media (max-width: 968px) {
    .sidebar {
        position: static;
        width: 100%;
        height: auto;
        margin: var(--spacing-md);
        border-radius: var(--radius-lg);
    }

    .main-content {
        margin-left: 0;
        padding: var(--spacing-lg);
    }

    .stats-row {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .skills-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }

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

@media (max-width: 640px) {
    .hero-heading {
        font-size: 2.5rem;
    }

    .hero-subheading {
        font-size: 1.5rem;
    }

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

    .service-card {
        flex-direction: column;
        text-align: center;
    }

    .service-icon {
        margin-left: 0;
        margin-top: var(--spacing-md);
    }

    .form-actions {
        flex-direction: column;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
    }
}