/* Reset and Base Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Dark professional color scheme */
    --color-bg-dark: #0a0a0b;
    --color-bg: #111113;
    --color-bg-elevated: #18181b;
    --color-bg-card: #1c1c1f;
    --color-border: #27272a;
    --color-border-light: #3f3f46;
    --color-text: #fafafa;
    --color-text-secondary: #a1a1aa;
    --color-text-muted: #71717a;
    --color-primary: #10b981;
    --color-primary-light: #34d399;
    --color-primary-dark: #059669;
    --color-accent: #22d3ee;
    --color-code-bg: #1e1e22;
    --color-code-keyword: #c792ea;
    --color-code-string: #c3e88d;
    --color-code-prop: #82aaff;
    --color-success: #10b981;
    --color-error: #ef4444;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5);
    --shadow-xl: 0 25px 50px -12px rgb(0 0 0 / 0.6);
    --radius: 6px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text);
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

h2 {
    font-size: 2.25rem;
    letter-spacing: -0.02em;
}

h3 {
    font-size: 1.375rem;
}

h4 {
    font-size: 1rem;
    font-weight: 600;
}

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 1.75rem; }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: all 0.15s ease;
    font-family: inherit;
}

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

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

.btn-ghost {
    background-color: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border-light);
}

.btn-ghost:hover {
    background-color: var(--color-bg-elevated);
    border-color: var(--color-text-muted);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 0.95rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(17, 17, 19, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 2px;
}

.logo-mark {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-primary);
}

.logo-text {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-text);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.15s ease;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* Language Selector */
.lang-selector {
    display: flex;
    align-items: center;
    gap: 4px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.8rem;
}

.lang-current {
    color: var(--color-text);
    font-weight: 500;
}

.lang-sep {
    color: var(--color-text-muted);
}

.lang-form {
    display: inline;
}

.lang-btn {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.8rem;
    padding: 4px 6px;
    border-radius: 4px;
    transition: all 0.15s ease;
}

.lang-btn:hover {
    background: var(--color-bg-elevated);
    color: var(--color-primary);
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-actions .btn { display: none; }
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    background: var(--color-bg-dark);
    border-bottom: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(ellipse, rgba(16, 185, 129, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

@media (max-width: 992px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

.hero-content h1 {
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
}

.hero-line {
    color: var(--color-text);
}

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

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
    line-height: 1.7;
    max-width: 480px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-decoration {
    position: relative;
}

@media (max-width: 992px) {
    .hero-decoration { display: none; }
}

.code-block {
    background: var(--color-code-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.8;
}

.code-line {
    display: block;
}

.code-keyword { color: var(--color-code-keyword); }
.code-string { color: var(--color-code-string); }
.code-prop { color: var(--color-code-prop); }

/* Section Styles */
.section-tag {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.85rem;
    color: var(--color-primary);
    display: block;
    margin-bottom: 12px;
}

.section-header {
    margin-bottom: 64px;
}

.section-header h2 {
    margin-bottom: 12px;
}

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

/* Services Section */
.services {
    padding: 120px 0;
    border-bottom: 1px solid var(--color-border);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

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

.service-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px;
    transition: all 0.2s ease;
}

.service-card:hover {
    border-color: var(--color-border-light);
    transform: translateY(-2px);
}

.service-number {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.85rem;
    color: var(--color-primary);
    margin-bottom: 20px;
}

.service-card h3 {
    margin-bottom: 16px;
}

.service-card > p {
    color: var(--color-text-secondary);
    margin-bottom: 24px;
    line-height: 1.7;
}

.service-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.service-list li {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    padding-left: 16px;
    position: relative;
}

.service-list li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--color-border-light);
}

/* Work Section */
.work {
    padding: 120px 0;
    background: var(--color-bg-dark);
    border-bottom: 1px solid var(--color-border);
}

.project-card {
    display: block;
    background: linear-gradient(135deg, var(--color-bg-elevated) 0%, var(--color-bg-card) 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 48px;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
    margin-bottom: 48px;
}

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

.project-badge {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-primary);
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 4px;
    margin-bottom: 20px;
}

.project-content h3 {
    font-size: 1.75rem;
    margin-bottom: 12px;
}

.project-content p {
    color: var(--color-text-secondary);
    margin-bottom: 20px;
    max-width: 600px;
    line-height: 1.7;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.project-tech span {
    padding: 4px 12px;
    background: var(--color-bg-dark);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.8rem;
    border-radius: 4px;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-primary);
    font-weight: 500;
}

.work-cta {
    text-align: center;
}

.work-cta p {
    color: var(--color-text-secondary);
    margin-bottom: 16px;
}

/* About Section */
.about {
    padding: 120px 0;
    border-bottom: 1px solid var(--color-border);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

.about-text h2 {
    margin-bottom: 24px;
}

.about-lead {
    font-size: 1.125rem;
    color: var(--color-text);
    margin-bottom: 16px;
    line-height: 1.7;
}

.about-text > p:last-of-type {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.about-values {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.value-card {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 24px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.value-icon {
    width: 40px;
    height: 40px;
    min-width: 40px;
    background: rgba(16, 185, 129, 0.1);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.value-card h4 {
    margin-bottom: 4px;
}

.value-card p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Contact Section */
.contact {
    padding: 120px 0;
    background: var(--color-bg-dark);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
}

@media (max-width: 992px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

.contact-text h2 {
    margin-bottom: 16px;
}

.contact-text > p {
    color: var(--color-text-secondary);
    margin-bottom: 32px;
    line-height: 1.7;
}

.contact-email {
    display: flex;
    align-items: center;
    gap: 12px;
}

.contact-email svg {
    color: var(--color-primary);
}

.contact-email a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
}

.contact-email a:hover {
    color: var(--color-primary);
}

/* Contact Form */
.contact-form {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 40px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 576px) {
    .form-row { grid-template-columns: 1fr; }
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-family: inherit;
    transition: all 0.15s ease;
    background: var(--color-bg-elevated);
    color: var(--color-text);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-bg);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form .btn {
    width: 100%;
    margin-top: 8px;
}

/* Button loading state */
.submit-btn .btn-loading { display: none; }
.submit-btn.htmx-request .btn-text { display: none; }
.submit-btn.htmx-request .btn-loading { display: inline; }

/* Contact Success/Error */
.contact-success {
    text-align: center;
    padding: 48px 40px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
}

.contact-success .success-icon {
    color: var(--color-success);
    margin-bottom: 20px;
}

.contact-success h3 {
    margin-bottom: 12px;
}

.contact-success p {
    color: var(--color-text-secondary);
}

.contact-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--color-error);
    padding: 14px 16px;
    border-radius: var(--radius);
    margin-bottom: 20px;
}

.contact-error p {
    margin: 0;
    font-size: 0.9rem;
}

/* Footer */
.footer {
    background: var(--color-bg-dark);
    border-top: 1px solid var(--color-border);
    padding: 80px 0 32px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 64px;
}

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        gap: 48px;
    }
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 2px;
    margin-bottom: 12px;
}

.footer-brand p {
    color: var(--color-text-muted);
}

.footer-links {
    display: flex;
    gap: 80px;
}

@media (max-width: 576px) {
    .footer-links {
        flex-direction: column;
        gap: 32px;
    }
}

.footer-section h4 {
    margin-bottom: 20px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 12px;
}

.footer-section a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.15s ease;
}

.footer-section a:hover {
    color: var(--color-text);
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}