/* ==========================================================================
   Missoh IT Consulting - Minimal Light Theme
   ========================================================================== */

/* CSS Variables */
:root {
    --color-bg: #ffffff;
    --color-bg-subtle: #f8f9fa;
    --color-bg-muted: #f1f3f4;
    --color-text: #1a1a1a;
    --color-text-secondary: #5f6368;
    --color-text-muted: #80868b;
    --color-border: #e8eaed;
    --color-border-subtle: #f1f3f4;
    --color-accent: #1a73e8;
    --color-accent-hover: #1557b0;
    --color-success: #34a853;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 5rem;
    --spacing-3xl: 8rem;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

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

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

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

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

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 2.75rem); }
h3 { font-size: 1.25rem; }

/* Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-subtle);
}

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

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.nav-cta {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-text);
    color: var(--color-bg) !important;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.nav-cta:hover {
    background: var(--color-text-secondary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition-fast);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.btn-primary:hover {
    background: var(--color-text-secondary);
    transform: translateY(-1px);
}

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

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

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

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

.btn-full {
    width: 100%;
}

/* Section Styles */
section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
}

.section-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-xs);
}

.section-title {
    margin-bottom: var(--spacing-sm);
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: calc(var(--spacing-3xl) + 60px);
    background: linear-gradient(180deg, var(--color-bg-subtle) 0%, var(--color-bg) 100%);
}

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

.hero-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
}

.hero-title {
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 480px;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    justify-content: center;
}

.hero-card {
    background: var(--color-text);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
}

.hero-card-header {
    display: flex;
    gap: 6px;
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.05);
}

.hero-card-header .dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
}

.hero-code {
    padding: var(--spacing-md);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

.hero-code .code-keyword { color: #c792ea; }
.hero-code .code-key { color: #82aaff; }
.hero-code .code-value { color: #f78c6c; }
.hero-code .code-string { color: #c3e88d; }
.hero-code .code-success { color: #c3e88d; }

/* Services Section */
.services {
    background: var(--color-bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

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

.service-card:hover {
    border-color: var(--color-text-muted);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.service-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-subtle);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.service-card h3 {
    margin-bottom: var(--spacing-xs);
}

.service-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* Portfolio Section */
.portfolio {
    background: var(--color-bg-subtle);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

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

.portfolio-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.portfolio-card-featured {
    grid-column: span 2;
}

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

.portfolio-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-accent);
    background: rgba(26, 115, 232, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.portfolio-card h3 {
    margin-bottom: var(--spacing-xs);
}

.portfolio-card p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

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

.portfolio-tech li {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-text-muted);
    background: var(--color-bg-muted);
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-sm);
}

.portfolio-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-accent);
    transition: color var(--transition-fast);
}

.portfolio-link:hover {
    color: var(--color-accent-hover);
}

.about-cta {
    margin-top: var(--spacing-lg);
}

/* Blog Section */
.blog {
    background: var(--color-bg);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

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

.blog-card:hover {
    border-color: var(--color-text-muted);
    box-shadow: var(--shadow-sm);
}

.blog-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: 0.85rem;
}

.blog-meta time {
    color: var(--color-text-muted);
}

.blog-category {
    color: var(--color-accent);
    font-weight: 500;
}

.blog-card h3 {
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
}

.blog-card h3 a {
    transition: color var(--transition-fast);
}

.blog-card h3 a:hover {
    color: var(--color-accent);
}

.blog-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.blog-cta {
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* About Section */
.about {
    background: var(--color-bg-subtle);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-content .section-label,
.about-content .section-title {
    text-align: left;
}

.about-text {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.about-stats {
    display: flex;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.03em;
}

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

.about-image {
    display: flex;
    justify-content: center;
}

.about-placeholder {
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-bg-muted) 0%, var(--color-border) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    font-weight: 700;
    color: var(--color-text-muted);
}

/* Contact Section */
.contact {
    background: var(--color-bg);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
}

.contact-info .section-label,
.contact-info .section-title {
    text-align: left;
}

.contact-text {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

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

.contact-link:hover {
    color: var(--color-accent);
}

.contact-link svg {
    flex-shrink: 0;
}

.contact-form {
    background: var(--color-bg-subtle);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    font-family: inherit;
    font-size: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    color: var(--color-text);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
}

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

/* Footer */
.footer {
    background: var(--color-text);
    color: var(--color-bg);
    padding: var(--spacing-xl) 0;
}

.footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: 700;
}

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

.footer-text {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition-fast);
}

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

.footer-copyright {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
    margin-top: var(--spacing-sm);
}

/* Article Page Styles */
.article-page {
    padding-top: calc(var(--spacing-3xl) + 60px);
    padding-bottom: var(--spacing-3xl);
    min-height: 100vh;
}

.article-header {
    max-width: 720px;
    margin: 0 auto var(--spacing-xl);
}

.back-link {
    display: inline-block;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-fast);
}

.back-link:hover {
    color: var(--color-accent);
}

.article-header h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-sm);
}

.article-meta {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.article-content {
    max-width: 720px;
    margin: 0 auto;
}

.article-content h2 {
    font-size: 1.5rem;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}

.article-content h3 {
    font-size: 1.25rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-xs);
}

.article-content p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
    line-height: 1.75;
}

.article-content a {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.article-content a:hover {
    color: var(--color-accent-hover);
}

.article-content ul,
.article-content ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
    color: var(--color-text-secondary);
}

.article-content li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.75;
}

.article-content pre {
    background: var(--color-text);
    color: rgba(255, 255, 255, 0.9);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin-bottom: var(--spacing-md);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.6;
}

.article-content code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--color-bg-muted);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
}

.article-content pre code {
    background: none;
    padding: 0;
}

.article-content blockquote {
    border-left: 3px solid var(--color-accent);
    padding-left: var(--spacing-md);
    margin: var(--spacing-md) 0;
    color: var(--color-text-secondary);
    font-style: italic;
}

.article-content strong {
    color: var(--color-text);
    font-weight: 600;
}

.article-content img {
    max-width: 100%;
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
}

.article-footer {
    max-width: 720px;
    margin: var(--spacing-xl) auto 0;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.article-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.article-author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-bg-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--color-text-muted);
}

.article-author-info {
    display: flex;
    flex-direction: column;
}

.article-author-name {
    font-weight: 600;
    color: var(--color-text);
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin: 0 auto var(--spacing-lg);
    }

    .hero-actions {
        justify-content: center;
    }

    .about-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-content .section-label,
    .about-content .section-title {
        text-align: center;
    }

    .about-stats {
        justify-content: center;
    }

    .about-image {
        order: -1;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

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

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

    .portfolio-card-featured {
        grid-column: span 1;
    }

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

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

    .about-stats {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: center;
    }

    section {
        padding: var(--spacing-2xl) 0;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .stat-number {
        font-size: 2rem;
    }
}