/* ============================================
   PERSONAL PORTFOLIO - MAIN STYLESHEET
   Clean, white, professional design
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
    /* Colors */
    --color-white: #ffffff;
    --color-bg: #fafafa;
    --color-bg-light: #f4f4f5;
    --color-surface: #ffffff;
    --color-border: #e4e4e7;
    --color-border-light: #f1f1f3;

    --color-text-primary: #09090b;
    --color-text-secondary: #52525b;
    --color-text-tertiary: #a1a1aa;

    --color-accent: #6366f1;        /* indigo */
    --color-accent-light: #eef2ff;
    --color-accent-hover: #4f46e5;
    --color-accent-dark: #3730a3;

    --color-success: #22c55e;
    --color-error: #ef4444;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-serif: 'DM Serif Display', Georgia, serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 5rem;

    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.06), 0 2px 8px rgba(0,0,0,0.04);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.08), 0 8px 24px rgba(0,0,0,0.05);
    --shadow-accent: 0 8px 24px rgba(99,102,241,0.2);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Container */
    --container-max: 1200px;
    --container-pad: 1.5rem;
}

/* ---------- 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);
    background-color: var(--color-white);
    color: var(--color-text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ---------- Container ---------- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
}

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
}

.text-accent { color: var(--color-accent); }
.text-secondary { color: var(--color-text-secondary); }
.text-serif { font-family: var(--font-serif); font-style: italic; }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.875rem;
    border-radius: var(--radius-full);
    padding: 0.625rem 1.25rem;
    transition: all var(--transition-base);
    cursor: pointer;
    white-space: nowrap;
    letter-spacing: 0.01em;
}

.btn-sm { padding: 0.4rem 0.875rem; font-size: 0.8rem; }
.btn-lg { padding: 0.875rem 1.75rem; font-size: 0.9375rem; }

.btn-primary {
    background: var(--color-accent);
    color: white;
    box-shadow: var(--shadow-accent);
}
.btn-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 12px 32px rgba(99,102,241,0.28);
}

.btn-dark {
    background: var(--color-text-primary);
    color: white;
    box-shadow: var(--shadow-md);
}
.btn-dark:hover {
    background: #1a1a1a;
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    border: 1.5px solid var(--color-border);
    color: var(--color-text-primary);
    background: transparent;
}
.btn-outline:hover {
    border-color: var(--color-text-primary);
    background: var(--color-text-primary);
    color: white;
}

/* ---------- Section Shared ---------- */
.section-pad { padding: var(--space-3xl) 0; }

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

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-header-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    text-align: left;
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-accent);
    background: var(--color-accent-light);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.03em;
}

/* ---------- Header / Nav ---------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.header.scrolled {
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
    height: 68px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-weight: 700;
}

.logo-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    background: var(--color-text-primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 800;
    border-radius: var(--radius-sm);
    letter-spacing: 0.03em;
}

.logo-text {
    font-size: 0.9375rem;
    color: var(--color-text-primary);
}

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

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
    color: var(--color-text-primary);
    background: var(--color-bg-light);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

/* ---------- Hero ---------- */
.hero {
    padding: calc(68px + 5rem) 0 var(--space-3xl);
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-success);
    background: rgba(34, 197, 94, 0.08);
    border: 1px solid rgba(34, 197, 94, 0.2);
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-lg);
}

.badge-dot {
    width: 7px;
    height: 7px;
    background: var(--color-success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.2); }
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.04em;
    margin-bottom: var(--space-lg);
}

.hero-subtitle {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
    max-width: 480px;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-bottom: var(--space-2xl);
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border-light);
}

.stat-value {
    display: block;
    font-size: 1.625rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--color-text-primary);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 36px;
    background: var(--color-border);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 440px;
}

.hero-avatar {
    position: relative;
    z-index: 1;
}

.avatar-ring {
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent-light) 0%, #f0f4ff 100%);
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.avatar-img {
    width: 200px;
    height: 200px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
}

.avatar-img svg { width: 100%; height: 100%; }

/* Image variant — rectangular card instead of circle */
.avatar-ring--image {
    width: 340px;
    height: 300px;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, #e0e7ff 0%, #f0f4ff 100%);
    border: 2px solid var(--color-border);
    overflow: hidden;
    box-shadow: 0 24px 64px rgba(99,102,241,0.15), var(--shadow-lg);
}


.tech-orbit {
    position: absolute;
    inset: -30px;
    border-radius: 50%;
}

.tech-badge {
    position: absolute;
    background: white;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-full);
    padding: 0.3rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    color: var(--color-text-primary);
}

.tb-1 { top: 10%; left: -20px; }
.tb-2 { top: 10%; right: -20px; }
.tb-3 { bottom: 20%; left: -30px; }
.tb-4 { bottom: 20%; right: -30px; }

.floating-card {
    position: absolute;
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.875rem 1.125rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-md);
    z-index: 2;
    animation: float 3s ease-in-out infinite;
}

.card-1 { top: 57px; left: 174px; animation-delay: 0s; }
.card-2 { bottom: 15%; right: 0; animation-delay: 1.5s; }

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

.card-icon { font-size: 1.25rem; }
.card-title { font-size: 0.8125rem; font-weight: 600; }
.card-sub { font-size: 0.6875rem; color: var(--color-text-tertiary); }

/* ---------- Services Grid ---------- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.service-card {
    position: relative;
    background: var(--color-white);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-base);
    overflow: hidden;
}

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

.service-card.featured {
    border-color: var(--color-accent);
    background: linear-gradient(160deg, var(--color-accent-light) 0%, white 60%);
}

.featured-badge {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background: var(--color-accent);
    color: white;
    font-size: 0.6875rem;
    font-weight: 600;
    padding: 0.2rem 0.625rem;
    border-radius: var(--radius-full);
    letter-spacing: 0.03em;
}

.service-icon {
    width: 52px;
    height: 52px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    color: var(--color-accent);
    border: 1px solid var(--color-border);
}

.service-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.625rem;
}

.service-desc {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.65;
    margin-bottom: var(--space-md);
}

.service-price {
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 0.75rem;
}

.service-link {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
}

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

/* ---------- Projects Grid ---------- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.project-card {
    background: white;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.project-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.project-img {
    width: 100%;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-accent-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--color-border);
    overflow: hidden;
}
.project-img img,
.project-img video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.project-emoji { font-size: 2.5rem; }

.project-body { padding: 1.25rem; }

.project-category {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

.project-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.project-desc {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.project-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-bottom: 1rem;
}

.stack-tag {
    font-size: 0.6875rem;
    font-weight: 500;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-full);
}

.project-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.project-price {
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--color-success);
}

.project-links {
    display: flex;
    gap: 0.5rem;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.3rem 0.7rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    transition: all var(--transition-fast);
    text-decoration: none;
}
.project-link:hover {
    background: var(--color-text-primary);
    color: white;
    border-color: var(--color-text-primary);
}

/* ---------- Articles Grid ---------- */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.article-card {
    background: white;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

.article-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.article-body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }

.article-tags {
    display: flex;
    gap: 0.375rem;
    margin-bottom: 0.875rem;
    flex-wrap: wrap;
}

.tag-pill {
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--color-accent);
    background: var(--color-accent-light);
    padding: 0.175rem 0.5rem;
    border-radius: var(--radius-full);
}

.article-title {
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 0.625rem;
    color: var(--color-text-primary);
}

.article-summary {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    line-height: 1.65;
    flex: 1;
    margin-bottom: 1.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    padding-top: 1rem;
    border-top: 1px solid var(--color-border-light);
}

.read-more {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-accent);
    transition: gap var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.read-more:hover { gap: 0.5rem; }

/* ---------- CTA Section ---------- */
.cta-section { background: var(--color-bg); }

.cta-card {
    background: var(--color-text-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-3xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 40%, rgba(99,102,241,0.3) 0%, transparent 50%),
                radial-gradient(circle at 70% 60%, rgba(99,102,241,0.2) 0%, transparent 50%);
    pointer-events: none;
}

.cta-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    color: white;
    margin-bottom: 1rem;
    position: relative;
}

.cta-subtitle {
    color: rgba(255,255,255,0.65);
    font-size: 1.0625rem;
    max-width: 500px;
    margin: 0 auto var(--space-xl);
    position: relative;
}

.cta-section .btn-dark {
    background: white;
    color: var(--color-text-primary);
    position: relative;
}

.cta-section .btn-dark:hover {
    background: var(--color-accent-light);
}

/* ---------- Footer ---------- */
.footer {
    background: var(--color-text-primary);
    color: rgba(255,255,255,0.7);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: var(--space-2xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    margin-bottom: var(--space-xl);
}

.footer .nav-logo {
    margin-bottom: var(--space-md);
}

.footer .logo-mark {
    background: rgba(255,255,255,0.1);
}

.footer .logo-text {
    color: white;
}

.footer-tagline {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.5);
    line-height: 1.6;
}

.footer-links h4 {
    color: white;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.footer-links li + li { margin-top: 0.6rem; }

.footer-links a {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.5);
    transition: color var(--transition-fast);
}

.footer-links a:hover { color: white; }

.footer-contact h4 {
    color: white;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.footer-email {
    display: block;
    font-size: 0.875rem;
    color: var(--color-accent);
    margin-bottom: var(--space-lg);
    transition: color var(--transition-fast);
}

.footer-email:hover { color: #818cf8; }

.social-links {
    display: flex;
    gap: 0.75rem;
}

.social-link {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-sm);
    color: rgba(255,255,255,0.6);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8125rem;
    color: rgba(255,255,255,0.35);
}

/* ---------- Loading States ---------- */
.projects-loading {
    grid-column: 1 / -1;
    display: flex;
    justify-content: center;
    padding: 3rem;
}

.loading-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Page Hero ---------- */
.page-hero {
    padding: calc(68px + 3rem) 0 3rem;
    border-bottom: 1px solid var(--color-border-light);
    background: var(--color-bg);
}

.page-hero-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 0.75rem;
}

.page-hero-sub {
    font-size: 1.0625rem;
    color: var(--color-text-secondary);
    max-width: 600px;
}

/* ---------- Filter Bar ---------- */
.filter-bar {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: var(--space-2xl);
}

.filter-btn {
    font-size: 0.8125rem;
    font-weight: 500;
    padding: 0.4rem 1rem;
    border-radius: var(--radius-full);
    border: 1.5px solid var(--color-border);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
    background: var(--color-text-primary);
    color: white;
    border-color: var(--color-text-primary);
}

/* ---------- Blog Article ---------- */
.article-full {
    padding: calc(68px + 2rem) 0 4rem;
}

.article-full .container {
    max-width: 780px;
}

.article-full-header {
    margin-bottom: var(--space-2xl);
}

.article-full-title {
    font-size: clamp(1.875rem, 3.5vw, 2.75rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1rem;
}

.article-full-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    flex-wrap: wrap;
}

.article-content {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--color-text-primary);
}

.article-content h1, .article-content h2, .article-content h3 {
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.article-content h2 { font-size: 1.5rem; }
.article-content h3 { font-size: 1.25rem; }
.article-content p { margin-bottom: 1.25rem; }
.article-content ul, .article-content ol { margin-bottom: 1.25rem; padding-left: 1.5rem; }
.article-content li { margin-bottom: 0.375rem; }
.article-content strong { font-weight: 700; }
.article-content a { color: var(--color-accent); text-decoration: underline; }
.article-content hr { border: none; border-top: 1px solid var(--color-border); margin: 2rem 0; }
.article-content blockquote {
    border-left: 3px solid var(--color-accent);
    padding: 0.75rem 1.25rem;
    background: var(--color-accent-light);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin: 1.25rem 0;
    font-style: italic;
}

.article-content code {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    padding: 0.15em 0.4em;
    border-radius: 4px;
    font-size: 0.875em;
}

.article-content pre {
    background: var(--color-text-primary);
    color: #e4e4e7;
    padding: 1.25rem;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: 1.25rem 0;
}

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

/* ---------- Contact Form ---------- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-3xl);
    align-items: start;
}

.contact-info h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-md);
}

.contact-detail {
    display: flex;
    align-items: flex-start;
    gap: 0.875rem;
    margin-bottom: var(--space-lg);
}

.contact-detail-icon {
    width: 40px;
    height: 40px;
    background: var(--color-accent-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    flex-shrink: 0;
}

.contact-detail-text {
    font-size: 0.875rem;
}

.contact-detail-label {
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.contact-detail-value {
    color: var(--color-text-secondary);
}

.form-card {
    background: white;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
}

input, textarea, select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    color: var(--color-text-primary);
    background: var(--color-bg);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    outline: none;
}

input:focus, textarea:focus, select:focus {
    border-color: var(--color-accent);
    background: white;
    box-shadow: 0 0 0 3px rgba(99,102,241,0.12);
}

textarea { min-height: 140px; resize: vertical; }

.form-submit .btn { width: 100%; justify-content: center; }

.form-message {
    display: none;
    padding: 0.875rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    margin-top: var(--space-md);
}

.form-message.success {
    background: rgba(34,197,94,0.08);
    border: 1px solid rgba(34,197,94,0.2);
    color: #16a34a;
    display: block;
}

.form-message.error {
    background: rgba(239,68,68,0.08);
    border: 1px solid rgba(239,68,68,0.2);
    color: #dc2626;
    display: block;
}

/* ---------- Admin Panel ---------- */
.admin-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: 100vh;
}

.admin-sidebar {
    background: var(--color-text-primary);
    padding: 1.5rem;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.admin-logo {
    color: white;
    font-weight: 800;
    font-size: 1.125rem;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.admin-nav { list-style: none; }
.admin-nav li + li { margin-top: 0.25rem; }

.admin-nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.875rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255,255,255,0.6);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.admin-nav-link:hover {
    background: rgba(255,255,255,0.08);
    color: white;
}

.admin-nav-link.active {
    background: var(--color-accent);
    color: white;
}

.admin-main {
    background: var(--color-bg);
    padding: var(--space-2xl);
    overflow-y: auto;
    min-height: 100vh;
}

.admin-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-xl);
}

.admin-section { display: none; }
.admin-section.active { display: block; }

.admin-table-wrap {
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
    padding: 0.875rem 1.25rem;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

td {
    padding: 1rem 1.25rem;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--color-border-light);
    vertical-align: middle;
}

tr:last-child td { border-bottom: none; }

tr:hover td { background: var(--color-bg); }

.badge {
    display: inline-flex;
    align-items: center;
    font-size: 0.6875rem;
    font-weight: 600;
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-full);
}

.badge-published { background: rgba(34,197,94,0.1); color: #16a34a; }
.badge-draft { background: var(--color-bg); color: var(--color-text-tertiary); border: 1px solid var(--color-border); }

.action-btn {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

.action-btn:hover { background: var(--color-text-primary); color: white; border-color: var(--color-text-primary); }
.action-btn.danger:hover { background: var(--color-error); border-color: var(--color-error); color: white; }
.action-btn.primary { background: var(--color-accent); color: white; border-color: var(--color-accent); }

/* ---------- Article Editor ---------- */
.editor-wrap {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

.editor-wrap .form-group { margin-bottom: 1.25rem; }

.editor-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border-light);
}

/* ---------- Pagination ---------- */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: var(--space-2xl);
}

.page-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.page-btn:hover, .page-btn.current {
    background: var(--color-text-primary);
    color: white;
    border-color: var(--color-text-primary);
}

/* ---------- Search Bar ---------- */
.search-bar {
    position: relative;
    margin-bottom: var(--space-xl);
}

.search-bar input {
    padding-left: 2.75rem;
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-tertiary);
}

/* ---------- Toast ---------- */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--color-text-primary);
    color: white;
    padding: 0.875rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    opacity: 0;
    transform: translateY(10px);
    transition: all var(--transition-base);
    max-width: 340px;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.success { background: #16a34a; }
.toast.error { background: var(--color-error); }

/* ---------- Empty State ---------- */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    color: var(--color-text-tertiary);
}

.empty-state-icon { font-size: 3rem; margin-bottom: 1rem; }
.empty-state h3 { font-size: 1.125rem; color: var(--color-text-secondary); margin-bottom: 0.5rem; }
.empty-state p { font-size: 0.875rem; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle { max-width: 100%; }

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

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

    .hero-visual {
        display: none;
    }

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

    .projects-grid, .articles-grid {
        grid-template-columns: 1fr 1fr;
    }

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

@media (max-width: 768px) {
    :root { --space-3xl: 3rem; }

    .nav-links {
        position: fixed;
        top: 68px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        align-items: stretch;
        padding: 1rem;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-md);
        display: none;
        gap: 0.25rem;
    }

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

    .nav-toggle { display: flex; }

    .nav-actions .btn:not(.nav-toggle) { display: none; }

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

    .section-header-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

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

    .admin-layout { grid-template-columns: 1fr; }
    .admin-sidebar { display: none; }

    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }

    .cta-card { padding: 2rem 1.5rem; }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
        text-align: center;
    }

    .stat-divider { display: none; }
}

/* ---------- Animations ---------- */
.fade-in {
    animation: fadeIn 0.5s ease both;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in-delay-1 { animation-delay: 0.1s; }
.fade-in-delay-2 { animation-delay: 0.2s; }
.fade-in-delay-3 { animation-delay: 0.3s; }

/* ---------- Language Switcher ---------- */
.lang-switcher {
    display: flex;
    align-items: center;
    background: var(--color-bg);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-full);
    padding: 3px;
    gap: 2px;
}

.lang-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
    letter-spacing: 0.02em;
}

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

.lang-btn.active {
    background: var(--color-white);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-sm);
}