/* ============================================
   ROOT & VARIABLES
   ============================================ */
:root {
    /* Colors */
    --primary: #8B5CF6;
    --primary-dark: #7C3AED;
    --primary-light: #A78BFA;
    --background: #FFFFFF;
    --foreground: #1F2937;
    --muted: #F3F4F6;
    --muted-foreground: #6B7280;
    --border: #E5E7EB;
    --card-bg: #F9FAFB;
    
    /* Typography */
    --font-sans: 'Inter', sans-serif;
    --font-display: 'Playfair Display', serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

/* ============================================
   GLOBAL STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--foreground);
    background-color: var(--background);
    line-height: 1.6;
    font-size: 16px;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.5rem, 8vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 6vw, 3rem);
}

h3 {
    font-size: clamp(1.25rem, 4vw, 1.75rem);
}

p {
    color: var(--muted-foreground);
    line-height: 1.8;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--primary-dark);
}

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo {
    width: 10rem;
    height: 10rem;
}

.brand-text {
    font-family: var(--font-display);
    font-size: 1.25rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--foreground);
    transition: color var(--transition-base);
}

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

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

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-md);
    color: var(--foreground);
    transition: background-color var(--transition-base), color var(--transition-base);
}

.social-link:hover {
    background-color: var(--muted);
    color: var(--primary);
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .navbar {
        padding: 0 var(--spacing-sm);
    }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(139, 92, 246, 0.2);
}

.btn-outline {
    background-color: transparent;
    color: var(--foreground);
    border-color: var(--border);
}

.btn-outline:hover {
    background-color: var(--muted);
    border-color: var(--primary);
    color: var(--primary);
}

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

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.05) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    position: relative;
    z-index: 1;
    padding: var(--spacing-2xl) var(--spacing-md);
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 4rem);
    line-height: 1.2;
}

.highlight {
    color: var(--primary);
}

.hero-subtitle {
    font-size: 1.125rem;
    max-width: 500px;
}

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

.hero-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--muted-foreground);
}

.status-dot {
    width: 0.5rem;
    height: 0.5rem;
    background-color: var(--primary);
    border-radius: 50%;
}

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

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
    color: var(--muted-foreground);
}

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

@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        padding: var(--spacing-xl) var(--spacing-sm);
    }
    
    .hero-image {
        display: none;
    }
}

/* ============================================
   SECTIONS
   ============================================ */
section {
    padding: var(--spacing-2xl) 0;
}

.section-title {
    font-size: clamp(2rem, 6vw, 3rem);
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--primary);
    font-weight: 500;
    margin-bottom: var(--spacing-2xl);
}

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

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    margin-bottom: var(--spacing-2xl);
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.about-card {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: all var(--transition-base);
}

.about-card:hover {
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.1);
}

.about-card h3 {
    margin-bottom: var(--spacing-md);
}

.about-card p {
    margin-bottom: var(--spacing-md);
}

.about-card p:last-child {
    margin-bottom: 0;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
}

.about-cardzin {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: all var(--transition-base);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    color: var(--muted-foreground);
    margin-top: var(--spacing-sm);
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

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

.skill-card {
    background-color: white;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.skill-card:hover {
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.1);
}

.skill-image {
    width: 100%;
    height: 160px;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(139, 92, 246, 0.05) 100%);
}

.skill-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.skill-content {
    padding: var(--spacing-lg);
}

.skill-content h3 {
    margin-bottom: var(--spacing-md);
}

.skill-content ul {
    list-style: none;
}

.skill-content li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--muted-foreground);
}

.skill-content li::before {
    content: '';
    width: 0.375rem;
    height: 0.375rem;
    background-color: var(--primary);
    border-radius: 50%;
    flex-shrink: 0;
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

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

.project-card:hover {
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.1);
}

.project-card-full {
    grid-column: 1 / -1;
}

.project-image {
    width: 100%;
    height: 160px;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(139, 92, 246, 0.05) 100%);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-content {
    padding: var(--spacing-lg);
}

.project-content h3 {
    margin-bottom: var(--spacing-md);
}

.project-content p {
    margin-bottom: var(--spacing-md);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.tag {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    background-color: rgba(139, 92, 246, 0.1);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-md);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--primary);
    font-weight: 600;
    font-size: 0.875rem;
    transition: gap var(--transition-base);
}

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

@media (max-width: 768px) {
    .project-card-full {
        grid-column: 1;
    }
}

/* ============================================
   VALUES SECTION
   ============================================ */
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
}

.value {
    text-align: center;
}

.value-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 4rem;
    height: 4rem;
    margin: 0 auto var(--spacing-lg);
    background-color: rgba(139, 92, 246, 0.1);
    border-radius: var(--radius-lg);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.value h3 {
    margin-bottom: var(--spacing-md);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    background-color: var(--card-bg);
}

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-subtitle {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-2xl);
}

.contact-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-2xl);
}

.contact-footer {
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--border);
    color: var(--muted-foreground);
    font-size: 0.875rem;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    :root {
        font-size: 14px;
    }
    
    section {
        padding: var(--spacing-xl) 0;
    }
    
    .contact-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}