/* ============================================================================
   REDZONERROR - PROFESSIONAL BLACK & WHITE PORTFOLIO
   Fully Responsive | Minimalist Design | Professional
   ============================================================================ */

/* ============================================================================
   RESET & BASE STYLES
   ============================================================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors - Black & White Theme */
    --color-black: #000000;
    --color-white: #ffffff;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #d4d4d4;
    --color-gray-400: #a3a3a3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;
    --color-gray-800: #262626;
    --color-gray-900: #171717;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Fira Code', 'Courier New', monospace;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

html {
    scroll-behavior: smooth;
}

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

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

/* ============================================================================
   NAVIGATION
   ============================================================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-gray-200);
    transition: var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--color-black);
    letter-spacing: -0.5px;
}

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

.nav-link {
    color: var(--color-gray-700);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-black);
    transition: var(--transition-base);
}

.nav-link:hover {
    color: var(--color-black);
}

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

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

.nav-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--color-black);
    transition: var(--transition-base);
}

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

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.grid-pattern {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(var(--color-gray-200) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-gray-200) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    letter-spacing: -1px;
}

.highlight {
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 10px;
    left: 0;
    right: 0;
    height: 15px;
    background-color: var(--color-black);
    opacity: 0.1;
    z-index: -1;
}

.typing-container {
    font-size: clamp(1.2rem, 2.5vw, 1.8rem);
    font-family: var(--font-mono);
    margin-bottom: var(--spacing-lg);
    min-height: 60px;
}

.typing-text {
    color: var(--color-gray-700);
}

.cursor {
    animation: blink 1s infinite;
}

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

.hero-description {
    font-size: 1.2rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

.social-link {
    width: 50px;
    height: 50px;
    border: 2px solid var(--color-black);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-black);
    font-size: 1.2rem;
    text-decoration: none;
    transition: var(--transition-base);
}

.social-link:hover {
    background-color: var(--color-black);
    color: var(--color-white);
    transform: translateY(-3px);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--color-black);
    border-radius: 20px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 10px;
    background-color: var(--color-black);
    border-radius: 2px;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 1.5s infinite;
}

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

@keyframes scroll {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(20px); }
}

/* ============================================================================
   BUTTONS
   ============================================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    cursor: pointer;
    border: 2px solid var(--color-black);
}

.btn-primary {
    background-color: var(--color-black);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-white);
    color: var(--color-black);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: var(--color-white);
    color: var(--color-black);
}

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

/* ============================================================================
   SECTIONS
   ============================================================================ */
section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.title-underline {
    width: 80px;
    height: 4px;
    background-color: var(--color-black);
    margin: 0 auto;
}

/* ============================================================================
   ABOUT SECTION
   ============================================================================ */
.about {
    background-color: var(--color-gray-100);
}

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

.about-text p {
    font-size: 1.1rem;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about-list {
    list-style: none;
    margin: var(--spacing-md) 0;
}

.about-list li {
    font-size: 1.1rem;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-md);
    position: relative;
}

.about-list li i {
    position: absolute;
    left: 0;
    top: 5px;
    color: var(--color-black);
}

.fun-fact {
    font-style: italic;
    color: var(--color-gray-600);
    margin-top: var(--spacing-md);
}

.fun-fact i {
    margin-right: var(--spacing-xs);
}

/* ============================================================================
   SKILLS SECTION
   ============================================================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.skill-category {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border: 2px solid var(--color-black);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.skill-category h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.skill-category h3 i {
    font-size: 1.5rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.skill-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--color-black);
    color: var(--color-white);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.skill-tag:hover {
    background-color: var(--color-white);
    color: var(--color-black);
    border: 1px solid var(--color-black);
}

/* ============================================================================
   PROJECTS SECTION
   ============================================================================ */
.projects {
    background-color: var(--color-gray-100);
}

.section-subtitle {
    color: var(--color-gray-600);
    font-size: 1.1rem;
    margin-top: var(--spacing-sm);
}

.repo-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.repo-stats .stat-item {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border: 2px solid var(--color-black);
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition-base);
}

.repo-stats .stat-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--color-gray-600);
    font-weight: 500;
}

.projects-scroll-container {
    max-height: 600px;
    overflow-y: auto;
    padding: var(--spacing-sm);
    border: 2px solid var(--color-black);
    border-radius: var(--radius-md);
    background-color: var(--color-white);
}

.projects-scroll-container::-webkit-scrollbar {
    width: 10px;
}

.projects-scroll-container::-webkit-scrollbar-track {
    background: var(--color-gray-200);
    border-radius: var(--radius-sm);
}

.projects-scroll-container::-webkit-scrollbar-thumb {
    background: var(--color-black);
    border-radius: var(--radius-sm);
}

.projects-scroll-container::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-700);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
    min-height: 200px;
}

.loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--color-gray-600);
    font-size: 1.1rem;
}

.project-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-black);
}

.project-icon {
    width: 50px;
    height: 50px;
    background-color: var(--color-black);
    color: var(--color-white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    font-size: 1.3rem;
}

.project-card h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
}

.project-card p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
    flex-grow: 1;
    font-size: 0.95rem;
}

.project-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    font-size: 0.85rem;
    color: var(--color-gray-600);
}

.project-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.project-meta i {
    font-size: 0.8rem;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-black);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition-fast);
    margin-top: auto;
}

.project-link:hover {
    gap: var(--spacing-sm);
}

.view-more {
    text-align: center;
    margin-top: var(--spacing-md);
}

/* ============================================================================
   CONTACT SECTION
   ============================================================================ */
.contact-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-description {
    font-size: 1.2rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
}

.contact-methods-inline {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.contact-link-inline {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-black);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition-fast);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
}

.contact-link-inline:hover {
    background-color: var(--color-gray-100);
    transform: translateY(-2px);
}

.contact-link-inline i {
    font-size: 1.1rem;
}

.contact-methods-inline .separator {
    color: var(--color-gray-400);
    font-size: 1.2rem;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.contact-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border: 2px solid var(--color-black);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--color-black);
    transition: var(--transition-base);
}

.contact-card:hover {
    background-color: var(--color-black);
    color: var(--color-white);
    transform: translateY(-5px);
}

.contact-card i {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.contact-card h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-xs);
}

.contact-card p {
    color: inherit;
    opacity: 0.8;
}

/* ============================================================================
   FOOTER
   ============================================================================ */
.footer {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-md) 0;
    text-align: center;
}

.footer p {
    margin-bottom: var(--spacing-xs);
}

.footer-tagline {
    opacity: 0.7;
    font-style: italic;
}

/* ============================================================================
   RESPONSIVE DESIGN
   ============================================================================ */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--color-white);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--spacing-lg);
        transition: var(--transition-base);
        border-top: 1px solid var(--color-gray-200);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .skills-grid,
    .projects-grid,
    .contact-methods {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 1.5rem;
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
}