/* ==========================================================================
   Variables & Reset
   ========================================================================== */
   :root {
    /* Color Palette - Dark Professional Theme */
    --bg-main: #0a0a0a;
    --bg-surface: #141414;
    --bg-surface-elevated: #1e1e1e;
    
    --text-primary: #f5f5f5;
    --text-secondary: #a3a3a3;
    --text-muted: #737373;
    
    --primary: #3b82f6; /* Professional Blue */
    --primary-hover: #2563eb;
    --primary-dark: #1a1d25;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    
    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing & Layout */
    --container-width: 1200px;
    --section-padding: 6rem 0;
    
    /* Shadows & Transitions */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.15);
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul {
    list-style: none;
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 600;
    letter-spacing: -0.02em;
}

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

/* ==========================================================================
   Layout & Utility Classes
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem auto;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.bg-surface {
    background-color: var(--bg-surface);
}

.bg-primary-dark {
    background-color: var(--bg-surface);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 1px solid transparent;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-primary {
    background-color: var(--primary);
    color: #fff;
    box-shadow: var(--shadow-md);
}

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

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

.btn-outline:hover {
    background-color: var(--bg-surface-elevated);
    border-color: var(--border-hover);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.25rem 0;
    transition: all var(--transition-normal);
    background-color: transparent;
}

.header.scrolled {
    background-color: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.05em;
}

.logo span {
    color: var(--primary);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
}

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

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    padding: 10rem 0 6rem 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

/* Subtle background glow */
.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(10, 10, 10, 0) 70%);
    border-radius: 50%;
    z-index: -1;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    background: linear-gradient(to right, #fff, #a3a3a3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 90%;
}

.hero-cta {
    display: flex;
    gap: 1rem;
}

/* Mockup Window */
.mockup-window {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: transform var(--transition-normal);
}

.mockup-window:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.mockup-header {
    background-color: var(--bg-surface-elevated);
    padding: 0.75rem 1rem;
    display: flex;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot-red { background-color: #ff5f56; }
.dot-yellow { background-color: #ffbd2e; }
.dot-green { background-color: #27c93f; }

.mockup-body {
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.7;
    color: #d4d4d4;
}

.code-line.indent { padding-left: 1.5rem; }
.keyword { color: #569cd6; }
.variable { color: #9cdcfe; }
.string { color: #ce9178; }
.method { color: #dcdcaa; }

/* ==========================================================================
   Services Section
   ========================================================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.service-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2rem;
    transition: all var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-lg);
    background-color: var(--bg-surface-elevated);
}

.service-icon {
    width: 48px;
    height: 48px;
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--primary);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.service-desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* ==========================================================================
   Work With Me Section
   ========================================================================== */
.work-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.work-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.work-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.work-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    font-size: 1rem;
    color: var(--text-primary);
}

.work-list .material-symbols-outlined {
    margin-top: 0.125rem;
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--bg-surface-elevated) 0%, var(--bg-main) 100%);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
}

.image-placeholder .material-symbols-outlined {
    font-size: 4rem;
    color: var(--border-hover);
}

/* ==========================================================================
   Process Section
   ========================================================================== */
.process-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    position: relative;
}

/* Connecting line */
.process-steps::before {
    content: '';
    position: absolute;
    top: 2rem;
    left: 10%;
    right: 10%;
    height: 1px;
    background-color: var(--border-color);
    z-index: 0;
}

.step {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 1rem;
}

.step-number {
    width: 4rem;
    height: 4rem;
    background-color: var(--bg-main);
    border: 2px solid var(--primary);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 auto 1.5rem auto;
    box-shadow: 0 0 0 8px var(--bg-main);
}

.step-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.step-desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* ==========================================================================
   Stats Section
   ========================================================================== */
.stats {
    padding: 4rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1rem;
    font-weight: 500;
}

/* ==========================================================================
   Testimonials Section
   ========================================================================== */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.testimonial-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2.5rem;
    position: relative;
}

.quote-icon {
    position: absolute;
    top: 2rem;
    right: 2.5rem;
    color: var(--border-hover);
}

.quote-icon .material-symbols-outlined {
    font-size: 3rem;
}

.testimonial-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 3rem;
    height: 3rem;
    background-color: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.25rem;
}

.author-name {
    font-size: 1rem;
    margin-bottom: 0.125rem;
}

.author-role {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ==========================================================================
   CTA Section
   ========================================================================== */
.cta-box {
    background: linear-gradient(135deg, var(--bg-surface-elevated) 0%, var(--bg-surface) 100%);
    border: 1px solid var(--border-color);
    border-radius: 1.5rem;
    padding: 5rem 2rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.cta-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2.5rem auto;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    padding: 4rem 0 2rem 0;
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-desc {
    color: var(--text-secondary);
    margin-top: 1rem;
    max-width: 300px;
}

.footer-title {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
}

.footer-links ul, .footer-contact ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-contact li {
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-contact .material-symbols-outlined {
    font-size: 1.25rem;
    color: var(--text-muted);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    color: var(--text-muted);
}

.social-links a:hover {
    color: var(--text-primary);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 992px) {
    .hero-container, .work-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero {
        padding-top: 8rem;
        text-align: left;
    }
    
    .hero-subtitle {
        margin: 0 auto 2.5rem auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .process-steps {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .process-steps::before {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-container {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--bg-surface-elevated);
        padding: 2rem;
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-150%);
        transition: transform var(--transition-normal);
        z-index: 999;
    }
    
    .nav.active {
        transform: translateY(0);
    }
    
    .nav-list {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-box {
        padding: 3rem 1.5rem;
    }
    
    .cta-title {
        font-size: 2rem;
    }
}