/* ===== VietSoftware Theme - Main CSS ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --primary: #6366f1;
  --primary-light: #818cf8;
  --primary-dark: #4f46e5;
  --accent: #06b6d4;
  --accent-light: #22d3ee;
  --bg-dark: #0a0a1a;
  --bg-card: #111128;
  --bg-card-hover: #1a1a3e;
  --surface: #16163a;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --text-heading: #f1f5f9;
  --gradient-1: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
  --gradient-2: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
  --gradient-3: linear-gradient(135deg, #06b6d4 0%, #10b981 100%);
  --glass: rgba(255,255,255,0.05);
  --glass-border: rgba(255,255,255,0.08);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 32px rgba(0,0,0,0.3);
  --transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-light); }

h1,h2,h3,h4,h5,h6 { color: var(--text-heading); font-weight: 700; line-height: 1.2; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

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

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 50px; font-weight: 600;
  font-size: 0.95rem; cursor: pointer; border: none;
  transition: var(--transition); position: relative; overflow: hidden;
  text-transform: uppercase; letter-spacing: 0.5px;
}
.btn-primary {
  background: var(--gradient-1); color: #fff;
  box-shadow: 0 4px 20px rgba(99,102,241,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99,102,241,0.5);
  color: #fff;
}
.btn-outline {
  background: transparent; color: var(--primary-light);
  border: 2px solid var(--primary-light);
}
.btn-outline:hover {
  background: var(--primary-light); color: #fff;
  transform: translateY(-2px);
}

/* ===== HEADER / NAV ===== */
.site-header {
  position: fixed; top:0; left:0; right:0; z-index:1000;
  padding: 16px 0;
  background: rgba(10,10,26,0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition);
}
.site-header.scrolled { padding: 10px 0; background: rgba(10,10,26,0.95); }

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

.site-logo {
  font-size: 1.5rem; font-weight: 800; color: #fff;
  display: flex; align-items: center; gap: 10px;
}
.site-logo span {
  background: var(--gradient-1);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu { display: flex; align-items: center; gap: 8px; list-style: none; }
.nav-menu a {
  padding: 8px 18px; border-radius: 50px;
  color: var(--text-muted); font-weight: 500; font-size: 0.9rem;
}
.nav-menu a:hover, .nav-menu a.active {
  color: #fff; background: var(--glass);
}

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; background: none; border: none; padding: 8px;
}
.nav-toggle span {
  width: 24px; height: 2px; background: #fff;
  transition: var(--transition); border-radius: 2px;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; padding: 120px 0 80px;
  overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top:-50%; right:-30%;
  width: 800px; height: 800px; border-radius: 50%;
  background: radial-gradient(circle, rgba(99,102,241,0.15) 0%, transparent 70%);
  animation: pulse 8s ease-in-out infinite;
}
.hero::after {
  content: ''; position: absolute; bottom:-40%; left:-20%;
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(6,182,212,0.1) 0%, transparent 70%);
  animation: pulse 10s ease-in-out infinite reverse;
}
@keyframes pulse {
  0%,100% { transform: scale(1); opacity:0.5; }
  50% { transform: scale(1.15); opacity:1; }
}

.hero-content { position: relative; z-index: 2; }
.hero-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px; border-radius: 50px;
  background: var(--glass); border: 1px solid var(--glass-border);
  font-size: 0.85rem; color: var(--accent-light); margin-bottom: 24px;
}
.hero-badge::before {
  content: ''; width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent); animation: blink 2s infinite;
}
@keyframes blink { 0%,100%{opacity:1}50%{opacity:0.3} }

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem); margin-bottom: 24px;
  font-weight: 800;
}
.hero h1 .highlight {
  background: var(--gradient-1);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1.15rem; color: var(--text-muted);
  margin-bottom: 36px; max-width: 520px;
}
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-visual {
  position: relative; display: flex; justify-content: center; align-items: center;
}
.hero-code-block {
  background: var(--bg-card); border: 1px solid var(--glass-border);
  border-radius: var(--radius); padding: 28px;
  font-family: 'JetBrains Mono', monospace; font-size: 0.85rem;
  color: var(--text-muted); position: relative; width: 100%;
  box-shadow: var(--shadow);
}
.hero-code-block .dots {
  display: flex; gap: 6px; margin-bottom: 18px;
}
.hero-code-block .dots span {
  width: 10px; height: 10px; border-radius: 50%;
}
.hero-code-block .dots span:nth-child(1) { background: #ef4444; }
.hero-code-block .dots span:nth-child(2) { background: #f59e0b; }
.hero-code-block .dots span:nth-child(3) { background: #22c55e; }
.code-line { margin: 4px 0; }
.code-keyword { color: #c084fc; }
.code-func { color: #60a5fa; }
.code-string { color: #34d399; }
.code-comment { color: #475569; }

.hero-stats {
  display: flex; gap: 40px; margin-top: 48px;
}
.stat-item h3 {
  font-size: 2rem; background: var(--gradient-1);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-item p { font-size: 0.85rem; color: var(--text-muted); }

/* ===== SECTION COMMON ===== */
.section { padding: 100px 0; position: relative; }
.section-header {
  text-align: center; margin-bottom: 64px;
}
.section-label {
  display: inline-block; padding: 6px 20px; border-radius: 50px;
  background: var(--glass); border: 1px solid var(--glass-border);
  color: var(--primary-light); font-size: 0.8rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 16px;
}
.section-header h2 {
  font-size: clamp(2rem, 4vw, 2.8rem); margin-bottom: 16px;
}
.section-header p {
  font-size: 1.1rem; color: var(--text-muted); max-width: 600px; margin: 0 auto;
}

/* ===== SERVICES ===== */
.services-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.service-card {
  background: var(--bg-card); border: 1px solid var(--glass-border);
  border-radius: var(--radius); padding: 36px;
  transition: var(--transition); position: relative; overflow: hidden;
}
.service-card::before {
  content: ''; position: absolute; top:0; left:0; right:0; height:3px;
  background: var(--gradient-1); transform: scaleX(0);
  transition: var(--transition); transform-origin: left;
}
.service-card:hover {
  transform: translateY(-8px); border-color: rgba(99,102,241,0.3);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.service-card:hover::before { transform: scaleX(1); }

.service-icon {
  width: 56px; height: 56px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; font-size: 1.5rem;
}
.service-icon.si-1 { background: linear-gradient(135deg, rgba(99,102,241,0.2), rgba(99,102,241,0.05)); color: #818cf8; }
.service-icon.si-2 { background: linear-gradient(135deg, rgba(6,182,212,0.2), rgba(6,182,212,0.05)); color: #22d3ee; }
.service-icon.si-3 { background: linear-gradient(135deg, rgba(139,92,246,0.2), rgba(139,92,246,0.05)); color: #a78bfa; }
.service-icon.si-4 { background: linear-gradient(135deg, rgba(236,72,153,0.2), rgba(236,72,153,0.05)); color: #f472b6; }
.service-icon.si-5 { background: linear-gradient(135deg, rgba(16,185,129,0.2), rgba(16,185,129,0.05)); color: #34d399; }
.service-icon.si-6 { background: linear-gradient(135deg, rgba(245,158,11,0.2), rgba(245,158,11,0.05)); color: #fbbf24; }

.service-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
.service-card p { color: var(--text-muted); font-size: 0.92rem; }

/* ===== ABOUT ===== */
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.about-visual {
  position: relative; background: var(--bg-card); border-radius: var(--radius);
  padding: 40px; border: 1px solid var(--glass-border);
}
.about-numbers {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
}
.about-num-item {
  text-align: center; padding: 24px; border-radius: var(--radius-sm);
  background: var(--glass); border: 1px solid var(--glass-border);
}
.about-num-item h3 {
  font-size: 2.2rem; background: var(--gradient-1);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.about-num-item p { color: var(--text-muted); font-size: 0.85rem; margin-top: 4px; }

.about-content h2 { font-size: 2.2rem; margin-bottom: 20px; }
.about-content > p { color: var(--text-muted); margin-bottom: 16px; font-size: 1.05rem; }
.about-features { list-style: none; margin-top: 28px; }
.about-features li {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 0; color: var(--text); font-size: 0.95rem;
}
.about-features li::before {
  content: '✓'; width: 24px; height: 24px; border-radius: 50%;
  background: rgba(16,185,129,0.15); color: #34d399;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem; font-weight: 700; flex-shrink: 0;
}

/* ===== PROJECTS ===== */
.projects-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.project-card {
  background: var(--bg-card); border: 1px solid var(--glass-border);
  border-radius: var(--radius); overflow: hidden;
  transition: var(--transition);
}
.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.project-thumb {
  height: 200px; position: relative; overflow: hidden;
}
.project-thumb img {
  width: 100%; height: 100%; object-fit: cover;
  transition: var(--transition);
}
.project-card:hover .project-thumb img { transform: scale(1.05); }

.project-overlay {
  position: absolute; inset:0;
  background: linear-gradient(transparent 40%, rgba(10,10,26,0.9));
}
.project-body { padding: 24px; }
.project-tag {
  display: inline-block; padding: 4px 12px; border-radius: 50px;
  background: var(--glass); color: var(--accent-light);
  font-size: 0.75rem; font-weight: 600; margin-bottom: 12px;
}
.project-body h3 { font-size: 1.15rem; margin-bottom: 8px; }
.project-body p { color: var(--text-muted); font-size: 0.88rem; }

/* ===== TECH STACK ===== */
.tech-grid {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 20px;
}
.tech-item {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 24px 28px; background: var(--bg-card);
  border: 1px solid var(--glass-border); border-radius: var(--radius-sm);
  transition: var(--transition); min-width: 120px;
}
.tech-item:hover {
  border-color: var(--primary); transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.2);
}
.tech-item span { font-size: 2rem; }
.tech-item p { font-size: 0.8rem; color: var(--text-muted); font-weight: 500; }

/* ===== TESTIMONIALS ===== */
.testimonials-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.testimonial-card {
  background: var(--bg-card); border: 1px solid var(--glass-border);
  border-radius: var(--radius); padding: 32px;
  transition: var(--transition);
}
.testimonial-card:hover { border-color: rgba(99,102,241,0.3); transform: translateY(-4px); }
.testimonial-stars { color: #fbbf24; font-size: 0.9rem; margin-bottom: 16px; letter-spacing: 2px; }
.testimonial-text { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 20px; font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--gradient-1); display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 1rem;
}
.testimonial-info h4 { font-size: 0.9rem; }
.testimonial-info p { font-size: 0.8rem; color: var(--text-muted); }

/* ===== BLOG ===== */
.blog-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.blog-card {
  background: var(--bg-card); border: 1px solid var(--glass-border);
  border-radius: var(--radius); overflow: hidden;
  transition: var(--transition);
}
.blog-card:hover { transform: translateY(-6px); box-shadow: 0 16px 48px rgba(0,0,0,0.3); }
.blog-thumb { height: 180px; overflow: hidden; }
.blog-thumb img { width:100%; height:100%; object-fit:cover; transition: var(--transition); }
.blog-card:hover .blog-thumb img { transform: scale(1.05); }
.blog-body { padding: 24px; }
.blog-meta { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 12px; }
.blog-body h3 { font-size: 1.05rem; margin-bottom: 8px; }
.blog-body h3 a { color: var(--text-heading); }
.blog-body h3 a:hover { color: var(--primary-light); }
.blog-excerpt { color: var(--text-muted); font-size: 0.88rem; }

/* ===== CTA ===== */
.cta-section {
  padding: 100px 0; text-align: center; position: relative;
}
.cta-box {
  background: var(--bg-card); border: 1px solid var(--glass-border);
  border-radius: 24px; padding: 64px; position: relative; overflow: hidden;
}
.cta-box::before {
  content: ''; position: absolute; top:-100px; right:-100px;
  width: 300px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, rgba(99,102,241,0.15), transparent);
}
.cta-box h2 { font-size: 2.4rem; margin-bottom: 16px; position: relative; }
.cta-box p { color: var(--text-muted); font-size: 1.1rem; margin-bottom: 36px; position: relative; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; position: relative; }

/* ===== CONTACT ===== */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
}
.contact-info-item {
  display: flex; gap: 16px; margin-bottom: 28px;
}
.contact-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: var(--glass); border: 1px solid var(--glass-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; flex-shrink: 0;
}
.contact-detail h4 { font-size: 0.95rem; margin-bottom: 4px; }
.contact-detail p { color: var(--text-muted); font-size: 0.9rem; }

.contact-form { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }
.form-group input, .form-group textarea {
  width: 100%; padding: 14px 18px; border-radius: var(--radius-sm);
  background: var(--bg-card); border: 1px solid var(--glass-border);
  color: var(--text); font-family: inherit; font-size: 0.95rem;
  transition: var(--transition); outline: none;
}
.form-group input:focus, .form-group textarea:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}
.form-group textarea { resize: vertical; min-height: 120px; }

/* ===== FOOTER ===== */
.site-footer {
  background: var(--surface); border-top: 1px solid var(--glass-border);
  padding: 64px 0 24px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
  margin-bottom: 48px;
}
.footer-brand p { color: var(--text-muted); margin-top: 12px; font-size: 0.9rem; }
.footer-col h4 {
  font-size: 0.9rem; text-transform: uppercase; letter-spacing: 1px;
  margin-bottom: 20px; color: var(--text-heading);
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: var(--text-muted); font-size: 0.9rem; }
.footer-col ul li a:hover { color: var(--primary-light); }
.footer-bottom {
  border-top: 1px solid var(--glass-border); padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.85rem; color: var(--text-muted);
}

/* ===== SINGLE POST ===== */
.single-hero { padding: 140px 0 60px; text-align: center; }
.single-hero h1 { font-size: 2.4rem; max-width: 800px; margin: 0 auto 16px; }
.single-meta { color: var(--text-muted); font-size: 0.9rem; }
.single-content {
  max-width: 780px; margin: 0 auto; padding: 40px 24px 100px;
}
.single-content p { margin-bottom: 20px; color: var(--text); font-size: 1.05rem; }
.single-content h2 { font-size: 1.6rem; margin: 40px 0 16px; }
.single-content h3 { font-size: 1.3rem; margin: 32px 0 12px; }
.single-content ul, .single-content ol { margin: 16px 0 20px 24px; color: var(--text); }
.single-content li { margin-bottom: 8px; }
.single-content img { border-radius: var(--radius); margin: 24px 0; }
.single-content blockquote {
  border-left: 3px solid var(--primary); padding: 16px 24px;
  background: var(--glass); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0; color: var(--text-muted); font-style: italic;
}

/* ===== ARCHIVE ===== */
.archive-hero { padding: 140px 0 40px; text-align: center; }
.archive-hero h1 { font-size: 2.2rem; }
.archive-grid { padding: 40px 0 100px; }

/* ===== 404 ===== */
.page-404 {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  text-align: center;
}
.page-404 h1 {
  font-size: 8rem; background: var(--gradient-1);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-404 p { font-size: 1.2rem; color: var(--text-muted); margin: 16px 0 32px; }

/* ===== ANIMATIONS ===== */
.fade-up {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */

/* Large tablets / small desktops */
@media (max-width: 1200px) {
  .container { max-width: 960px; }
  .hero-grid { gap: 40px; }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
  .footer-grid .footer-col:last-child { grid-column: 1 / -1; }
}

/* Tablets landscape */
@media (max-width: 992px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-buttons { justify-content: center; }
  .hero-visual { margin-top: 40px; max-width: 500px; margin-left: auto; margin-right: auto; }
  .hero-stats { justify-content: center; flex-wrap: wrap; gap: 24px; }
  .hero h1 { font-size: clamp(2rem, 5vw, 3rem); }
  .hero-badge { font-size: 0.8rem; }

  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }

  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-visual { order: 2; }
  .about-content h2 { font-size: 1.8rem; }

  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }

  .cta-box { padding: 48px 32px; }
  .cta-box h2 { font-size: 2rem; }

  .single-hero h1 { font-size: 2rem; }
}

/* Tablets portrait / large phones */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
    background: var(--bg-card); flex-direction: column;
    padding: 80px 32px; gap: 8px; z-index: 1001;
    transition: var(--transition); box-shadow: -10px 0 40px rgba(0,0,0,0.5);
  }
  .nav-menu.active { right: 0; }
  .nav-menu a { padding: 12px 18px; font-size: 1rem; }
  .nav-toggle { display: flex; z-index: 1002; }

  .hero { padding: 100px 0 60px; min-height: auto; }
  .hero h1 { font-size: 1.8rem; margin-bottom: 16px; }
  .hero-desc { font-size: 1rem; margin-bottom: 24px; }
  .hero-stats { gap: 20px; margin-top: 32px; }
  .stat-item h3 { font-size: 1.6rem; }
  .hero-code-block { padding: 20px; font-size: 0.78rem; }

  .section { padding: 60px 0; }
  .section-header { margin-bottom: 40px; }
  .section-header h2 { font-size: 1.6rem; }
  .section-header p { font-size: 0.95rem; }

  .services-grid, .projects-grid, .testimonials-grid, .blog-grid { grid-template-columns: 1fr; }
  .service-card { padding: 28px; }
  .service-card:hover { transform: translateY(-4px); }

  .about-numbers { gap: 16px; }
  .about-visual { padding: 24px; }
  .about-num-item { padding: 18px; }
  .about-num-item h3 { font-size: 1.8rem; }
  .about-content h2 { font-size: 1.5rem; }
  .about-content > p { font-size: 0.95rem; }

  .tech-grid { gap: 12px; }
  .tech-item { padding: 16px 20px; min-width: 100px; }
  .tech-item span { font-size: 1.6rem; }

  .cta-box { padding: 36px 20px; }
  .cta-box h2 { font-size: 1.6rem; }
  .cta-box p { font-size: 0.95rem; margin-bottom: 24px; }
  .cta-buttons { flex-direction: column; align-items: center; gap: 12px; }
  .cta-buttons .btn { width: 100%; max-width: 280px; justify-content: center; }

  .contact-info-item { margin-bottom: 20px; }
  .form-row { flex-direction: column; gap: 12px; }

  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }

  .single-hero { padding: 110px 0 40px; }
  .single-hero h1 { font-size: 1.6rem; }
  .single-content { padding: 24px 16px 60px; }
  .single-content p { font-size: 0.95rem; }

  .page-404 h1 { font-size: 5rem; }
  .page-404 p { font-size: 1rem; }
}

/* Small phones */
@media (max-width: 576px) {
  .container { padding: 0 16px; }

  .site-logo { font-size: 1.25rem; }

  .hero { padding: 90px 0 48px; }
  .hero h1 { font-size: 1.5rem; }
  .hero-desc { font-size: 0.92rem; }
  .hero-badge { font-size: 0.75rem; padding: 5px 12px; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .hero-buttons .btn { width: 100%; max-width: 260px; justify-content: center; font-size: 0.85rem; padding: 12px 24px; }
  .hero-stats { flex-direction: column; align-items: center; gap: 16px; }
  .stat-item { text-align: center; }
  .stat-item h3 { font-size: 1.4rem; }

  .btn { padding: 12px 24px; font-size: 0.85rem; }

  .section-label { font-size: 0.7rem; padding: 5px 14px; letter-spacing: 1px; }
  .section-header h2 { font-size: 1.35rem; }

  .service-card { padding: 24px; }
  .service-icon { width: 48px; height: 48px; font-size: 1.3rem; }
  .service-card h3 { font-size: 1.1rem; }

  .about-numbers { grid-template-columns: 1fr 1fr; gap: 12px; }
  .about-num-item h3 { font-size: 1.5rem; }
  .about-features li { font-size: 0.88rem; gap: 10px; }
  .about-features li::before { width: 20px; height: 20px; font-size: 0.65rem; }

  .testimonial-card { padding: 24px; }
  .testimonial-text { font-size: 0.88rem; }

  .blog-thumb { height: 160px; }
  .blog-body { padding: 18px; }
  .blog-body h3 { font-size: 0.95rem; }

  .project-thumb { height: 170px; }
  .project-body { padding: 18px; }

  .contact-icon { width: 40px; height: 40px; font-size: 1rem; }
  .contact-detail h4 { font-size: 0.88rem; }
  .contact-detail p { font-size: 0.82rem; }
  .form-group input, .form-group textarea { padding: 12px 14px; font-size: 0.88rem; }

  .footer-brand p { font-size: 0.82rem; }
  .footer-col h4 { font-size: 0.82rem; margin-bottom: 14px; }
  .footer-col ul li a { font-size: 0.82rem; }
  .footer-bottom { font-size: 0.78rem; }

  .single-hero h1 { font-size: 1.35rem; }
  .archive-hero h1 { font-size: 1.5rem; }

  .page-404 h1 { font-size: 4rem; }
}

/* Extra small phones (iPhone SE, etc.) */
@media (max-width: 380px) {
  .container { padding: 0 12px; }
  .hero h1 { font-size: 1.3rem; }
  .hero-code-block { padding: 16px; font-size: 0.72rem; }
  .about-numbers { grid-template-columns: 1fr; }
  .tech-item { min-width: 80px; padding: 12px 16px; }
  .cta-box { padding: 28px 16px; }
  .cta-box h2 { font-size: 1.3rem; }
}

/* Touch device enhancements */
@media (hover: none) {
  .service-card:hover { transform: none; }
  .project-card:hover { transform: none; }
  .testimonial-card:hover { transform: none; }
  .blog-card:hover { transform: none; }
  .tech-item:hover { transform: none; }
  .btn-primary:hover { transform: none; }
  .btn-outline:hover { transform: none; }
}

/* Landscape phone fix */
@media (max-height: 500px) and (orientation: landscape) {
  .hero { min-height: auto; padding: 80px 0 40px; }
  .hero-stats { margin-top: 20px; }
  .page-404 { min-height: auto; padding: 100px 0; }
}

/* Print styles */
@media print {
  .site-header, .nav-toggle, .vs-chatbot-toggle, .vs-chatbot-window,
  .cta-section, .hero::before, .hero::after { display: none !important; }
  body { background: #fff; color: #000; }
  .section { padding: 30px 0; }
}