/* ===== IMPORTS ===== */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Thai:wght@300;400;500;600;700;800;900&display=swap');

/* ===== CSS VARIABLES ===== */
:root {
  --primary: #FF6B2B;
  --primary-light: #FF8F5E;
  --primary-dark: #E55A1B;
  --primary-glow: rgba(255, 107, 43, 0.3);
  --bg: #FFFFFF;
  --surface: #FFF8F5;
  --surface-2: #FFF0EA;
  --text: #1A1A2E;
  --text-secondary: #6B7280;
  --text-light: #9CA3AF;
  --border: #F3F4F6;
  --gradient: linear-gradient(135deg, #FF6B2B, #FF8F5E);
  --gradient-hero: linear-gradient(135deg, #FFF8F5 0%, #FFFFFF 50%, #FFF0EA 100%);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
  --shadow-orange: 0 4px 20px rgba(255,107,43,0.25);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: 'Noto Sans Thai', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

body.modal-open {
  overflow: hidden;
}

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

.hidden-field {
  position: absolute;
  left: -9999px;
}

/* ===== UTILITIES ===== */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-label::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--gradient);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.2;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 560px;
  margin-bottom: 48px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: var(--shadow-orange);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(255,107,43,0.35);
}

.btn-outline {
  border: 2px solid var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow-sm);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text);
}
.nav-logo span { color: var(--primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient);
  transition: var(--transition);
  border-radius: 2px;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  padding: 10px 24px !important;
  background: var(--gradient);
  color: #fff !important;
  border-radius: var(--radius-xs);
  font-weight: 600 !important;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover {
  box-shadow: var(--shadow-orange);
  transform: translateY(-1px);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 4px;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}

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

.hero-content { z-index: 2; }

.hero-greeting {
  font-size: 1.1rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 8px;
}

.hero-role {
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
  min-height: 2em;
}

.hero-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 480px;
  margin-bottom: 32px;
  line-height: 1.8;
}

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

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.hero-stat strong {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary);
  display: block;
}
.hero-stat span {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.hero-avatar-wrapper {
  position: relative;
  width: 360px;
  height: 360px;
}

.hero-avatar-wrapper::before {
  content: '';
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  background: var(--gradient);
  opacity: 0.15;
  animation: pulse-glow 3s ease-in-out infinite;
}

.hero-avatar {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid #fff;
  box-shadow: var(--shadow-lg);
  position: relative;
  z-index: 1;
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
  overflow: hidden;
}

.hero-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

/* floating shapes behind hero */
.hero-shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.06;
  background: var(--primary);
}
.hero-shape-1 { width: 400px; height: 400px; top: -100px; right: -100px; }
.hero-shape-2 { width: 250px; height: 250px; bottom: -60px; left: -80px; }

@keyframes pulse-glow {
  0%, 100% { opacity: 0.15; transform: scale(1); }
  50% { opacity: 0.25; transform: scale(1.04); }
}

/* ===== ABOUT ===== */
.about { background: var(--bg); }

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

.about-image-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.about-image-card img,
.about-image-card .about-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--radius-sm);
  object-fit: cover;
  background: var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  overflow: hidden;
}

.about-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.about-info-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 24px;
}

.about-info-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
}
.about-info-item .icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-xs);
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.about-info-item strong {
  color: var(--text);
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  margin-top: 32px;
}

.detail-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.detail-card h3 {
  font-size: 1.1rem;
  margin-bottom: 14px;
}

.detail-list {
  list-style: disc;
  padding-left: 20px;
  color: var(--text-secondary);
}

.detail-list li + li {
  margin-top: 10px;
}

/* ===== SKILLS ===== */
.skills {
  background: var(--surface);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 20px;
}

.skill-card {
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 28px 16px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.skill-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}
.skill-card .skill-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
  display: block;
}
.skill-card .skill-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
}

/* ===== SERVICES ===== */
.services {
  background:
    radial-gradient(circle at top right, rgba(255, 143, 94, 0.18), transparent 30%),
    linear-gradient(180deg, #fffdfb 0%, #ffffff 100%);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.service-card {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(255, 107, 43, 0.1);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 12px 34px rgba(26, 26, 46, 0.06);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(26, 26, 46, 0.1);
}

.service-card .icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--surface-2);
  color: var(--primary);
  font-size: 1.3rem;
}

.service-offer-card {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.service-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.service-card h3 {
  font-size: 1.12rem;
  line-height: 1.45;
}

.service-price-block {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px dashed rgba(255, 107, 43, 0.2);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.service-price-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(255, 107, 43, 0.1);
  color: var(--primary-dark);
  font-size: 0.78rem;
  font-weight: 700;
}

.service-price {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.2;
}

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

.service-list {
  display: grid;
  gap: 10px;
  list-style: none;
}

.service-list li {
  position: relative;
  padding-left: 22px;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

.service-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7rem;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--gradient);
  transform: translateY(-50%);
}

.service-note {
  margin-top: 28px;
  padding: 22px 24px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(255, 107, 43, 0.08), rgba(255, 143, 94, 0.14));
  border: 1px solid rgba(255, 107, 43, 0.16);
  box-shadow: 0 12px 32px rgba(255, 107, 43, 0.08);
}

.service-note-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.service-note-label {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary-dark);
}

.service-note p {
  max-width: 760px;
  color: var(--text-secondary);
}

/* ===== WORKFLOW ===== */
.workflow {
  background: var(--surface);
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.workflow-card {
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 24px;
  transition: var(--transition);
}

.workflow-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.workflow-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  height: 36px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--primary);
  font-weight: 800;
  font-size: 0.9rem;
  margin-bottom: 14px;
}

.workflow-card h3 {
  font-size: 1rem;
  margin-bottom: 10px;
}

.workflow-card p {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

/* ===== PORTFOLIO ===== */
.portfolio { background: var(--bg); }

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--surface);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.filter-btn:hover,
.filter-btn.active {
  background: var(--gradient);
  color: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-orange);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}

.project-card {
  background: var(--bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
  text-align: left;
  width: 100%;
}
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.project-card:focus-visible {
  outline: 3px solid var(--primary-glow);
  outline-offset: 3px;
}

.project-thumb {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  background: var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--primary);
  overflow: hidden;
}

.project-thumb img, .modal-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.project-card:hover .project-thumb img {
  transform: scale(1.05);
}

.project-info {
  padding: 24px;
}
.project-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.project-info p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.project-tag {
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--surface);
  color: var(--primary);
}

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}
.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg);
  border-radius: var(--radius);
  max-width: 640px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  transform: translateY(20px) scale(0.97);
  transition: var(--transition);
}
.modal-overlay.open .modal {
  transform: translateY(0) scale(1);
}

.modal-image {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: var(--primary);
  overflow: hidden;
  position: relative;
}

.modal-image-gallery {
  display: flex;
  width: 100%;
  height: 100%;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none;  /* IE and Edge */
}
.modal-image-gallery::-webkit-scrollbar {
  display: none;
}
.modal-image-gallery img {
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  object-fit: cover;
  scroll-snap-align: start;
}
.modal-gallery-nav {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
  background: rgba(0,0,0,0.5);
  padding: 4px 8px;
  border-radius: 20px;
}
.modal-gallery-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  transition: background 0.3s;
}
.modal-gallery-dot.active {
  background: #fff;
}

.gallery-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.5);
  color: white;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: background 0.3s;
  font-size: 1.2rem;
}
.gallery-nav-btn:hover {
  background: rgba(255, 107, 43, 0.9); /* Primary color */
}
.gallery-nav-btn.prev {
  left: 15px;
}
.gallery-nav-btn.next {
  right: 15px;
}

.modal-body {
  padding: 32px;
}
.modal-body h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 12px;
}
.modal-body p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.8;
}
.modal-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  z-index: 2;
}

/* ===== CONTACT ===== */
.contact { background: var(--surface); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  background: var(--bg);
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}
.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.contact-card:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}
.contact-card .icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-xs);
  background: var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.contact-card .info h4 {
  font-size: 0.9rem;
  font-weight: 700;
}
.contact-card .info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.contact-highlight {
  background: var(--gradient-hero);
  border: 1px solid rgba(255, 107, 43, 0.14);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--text);
  color: #fff;
  padding: 48px 0 24px;
}
.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}
.footer-logo {
  font-size: 1.3rem;
  font-weight: 800;
}
.footer-logo span { color: var(--primary); }

.footer-socials {
  display: flex;
  gap: 12px;
}
.footer-socials a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  font-size: 1.1rem;
}
.footer-socials a:hover {
  background: var(--primary);
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow-orange);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  transform: translateY(-3px);
}

/* ===== MOBILE NAV ===== */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg);
    flex-direction: column;
    padding: 80px 32px 32px;
    gap: 24px;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    z-index: 999;
  }
  .nav-links.open { right: 0; }
  .hamburger { display: flex; z-index: 1001; }
  .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .hamburger.active span:nth-child(2) { opacity: 0; }
  .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-image { order: -1; }
  .hero-avatar-wrapper { width: 240px; height: 240px; }
  .hero-desc { margin: 0 auto 32px; }
  .hero-buttons { justify-content: center; }
  .hero-stats { justify-content: center; gap: 24px; }

  .about-grid { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .portfolio-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .workflow-grid { grid-template-columns: 1fr; }
  .service-card-top,
  .service-note-content {
    flex-direction: column;
    align-items: flex-start;
  }
  .service-price-block { text-align: left; }

  .section { padding: 64px 0; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .hero-avatar-wrapper { width: 280px; height: 280px; }
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .workflow-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--surface); }
::-webkit-scrollbar-thumb { background: var(--primary-light); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ===== CUSTOM ANIMATIONS ===== */
.float-anim {
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
  100% { transform: translateY(0); }
}

.skill-card:hover .skill-icon i {
  animation: bounce 0.5s ease;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.contact-card:hover .icon i {
  animation: shake 0.5s ease;
}

@keyframes shake {
  0% { transform: rotate(0); }
  25% { transform: rotate(-10deg); }
  50% { transform: rotate(10deg); }
  75% { transform: rotate(-10deg); }
  100% { transform: rotate(0); }
}