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

:root {
  --primary: #6c5ce7;
  --primary-dark: #5a4bd1;
  --primary-light: #a29bfe;
  --secondary: #00cec9;
  --accent: #fd79a8;
  --bg: #ffffff;
  --bg-alt: #f8f9fa;
  --bg-card: #ffffff;
  --text: #2d3436;
  --text-light: #636e72;
  --text-muted: #b2bec3;
  --border: #e9ecef;
  --shadow: 0 10px 40px rgba(0,0,0,0.08);
  --shadow-hover: 0 20px 60px rgba(0,0,0,0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --nav-bg: rgba(255,255,255,0.85);
  --nav-shadow: 0 1px 20px rgba(0,0,0,0.06);
  --gradient-1: linear-gradient(135deg, #6c5ce7, #a29bfe);
  --gradient-2: linear-gradient(135deg, #00cec9, #55efc4);
  --gradient-3: linear-gradient(135deg, #fd79a8, #e84393);
}

[data-theme="dark"] {
  --bg: #0a0a14;
  --bg-alt: #12121f;
  --bg-card: #1a1a2e;
  --text: #e8e8f0;
  --text-light: #a0a0b8;
  --text-muted: #6c6c88;
  --border: #2a2a40;
  --shadow: 0 10px 40px rgba(0,0,0,0.3);
  --shadow-hover: 0 20px 60px rgba(0,0,0,0.4);
  --nav-bg: rgba(10,10,20,0.9);
  --nav-shadow: 0 1px 20px rgba(0,0,0,0.3);
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

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

.section {
  padding: 120px 0;
  position: relative;
}

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

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--primary);
  background: rgba(108,92,231,0.1);
  padding: 6px 18px;
  border-radius: 20px;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 12px;
  line-height: 1.2;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 500px;
  margin: 0 auto;
}

.gradient-text {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  outline: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-1);
  color: #fff;
  box-shadow: 0 4px 15px rgba(108,92,231,0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(108,92,231,0.4);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 2px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-3px);
}

/* ===== Loading Screen ===== */
.loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loader-text {
  margin-top: 16px;
  color: var(--text-light);
  font-size: 0.9rem;
}

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

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--nav-shadow);
  padding: 10px 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-light);
  transition: color var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-1);
  transition: width var(--transition);
  border-radius: 2px;
}

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

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  background: none;
  border: none;
  font-size: 1.2rem;
  color: var(--text);
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  transition: all var(--transition);
}

.theme-toggle:hover {
  background: var(--bg-alt);
  transform: rotate(30deg);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: all var(--transition);
  border-radius: 2px;
}

.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 ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 120px 24px 60px;
}

#particleCanvas {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(108,92,231,0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(0,206,201,0.08) 0%, transparent 50%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
}

.hero-greeting {
  font-size: 1.1rem;
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.hero-title {
  font-size: 4.2rem;
  font-weight: 800;
  margin-bottom: 20px;
  min-height: 1.2em;
  line-height: 1.15;
}

.cursor {
  display: inline-block;
  font-weight: 100;
  color: var(--primary);
  animation: blink 0.8s infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-light);
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-social {
  display: flex;
  gap: 20px;
  justify-content: center;
}

.social-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-alt);
  color: var(--text-light);
  font-size: 1.2rem;
  transition: all var(--transition);
}

.social-icon:hover {
  background: var(--gradient-1);
  color: #fff;
  transform: translateY(-4px);
}

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 2px;
  animation: float 2s ease-in-out infinite;
}

.scroll-mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.scroll-dot {
  width: 4px;
  height: 8px;
  background: var(--primary);
  border-radius: 2px;
  animation: scrollDot 1.5s ease-in-out infinite;
}

@keyframes scrollDot {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}

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

/* ===== Works / Portfolio ===== */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 48px;
}

.filter-btn {
  padding: 8px 22px;
  border-radius: 30px;
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--text-light);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
}

.filter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.filter-btn.active {
  background: var(--gradient-1);
  border-color: transparent;
  color: #fff;
}

.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

.work-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.3s ease;
}

.work-card.featured {
  border: 1.5px solid rgba(108,92,231,0.2);
  position: relative;
}

.featured-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 5;
  background: linear-gradient(135deg, #6c5ce7, #a29bfe);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 4px;
  box-shadow: 0 2px 10px rgba(108,92,231,0.3);
}

.featured-badge i {
  font-size: 0.6rem;
}

.work-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.work-card.hide {
  display: none;
}

.work-card:hover {
  transform: translateY(-8px) !important;
  box-shadow: var(--shadow-hover);
}

.work-card-image {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: var(--bg-alt);
}

.work-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.work-card:hover .work-card-image img {
  transform: scale(1.08);
}

.work-card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.work-card:hover .work-card-overlay {
  opacity: 1;
}

.work-card-overlay i {
  color: #fff;
  font-size: 2rem;
  transform: scale(0);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.work-card:hover .work-card-overlay i {
  transform: scale(1);
}

.work-card-body {
  padding: 20px 24px 24px;
}

.work-card-action {
  margin-top: 12px;
}

.view-detail-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--primary);
  transition: gap 0.3s ease;
}

.view-detail-btn i {
  font-size: 0.7rem;
  transition: transform 0.3s ease;
}

.work-card:hover .view-detail-btn {
  gap: 8px;
}

.work-card:hover .view-detail-btn i {
  transform: translateX(4px);
}

.work-card-category {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.work-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.work-card p {
  font-size: 0.88rem;
  color: var(--text-light);
  margin-bottom: 16px;
  line-height: 1.5;
}

.work-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.work-card-tags span {
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 12px;
  background: rgba(108,92,231,0.08);
  color: var(--primary);
}

/* ===== Skills ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}

.skill-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 32px 24px;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-1);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.skill-card:hover::before {
  transform: scaleX(1);
}

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

.skill-icon {
  font-size: 2.4rem;
  margin-bottom: 16px;
  color: var(--primary);
}

.skill-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.skill-bar {
  width: 100%;
  height: 6px;
  background: var(--bg-alt);
  border-radius: 3px;
  overflow: hidden;
}

.skill-bar-fill {
  height: 100%;
  background: var(--gradient-1);
  border-radius: 3px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.skill-bar-fill.animated {
  /* width set inline via JS */
}

/* ===== Stats ===== */
.stats-section {
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.stats-bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-1);
  opacity: 0.05;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  text-align: center;
}

.stat-item {
  padding: 32px 20px;
}

.stat-item i {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 16px;
}

.stat-number {
  display: block;
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.95rem;
  color: var(--text-light);
}

/* ===== About ===== */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
}

.about-image-frame {
  position: relative;
  width: fit-content;
  margin: 0 auto;
}

.about-image-frame img {
  border-radius: var(--radius);
  width: 340px;
  height: 420px;
  object-fit: cover;
  position: relative;
  z-index: 1;
}

.about-image-border {
  position: absolute;
  top: -16px;
  left: -16px;
  width: calc(100% + 32px);
  height: calc(100% + 32px);
  border: 2px solid var(--primary);
  border-radius: calc(var(--radius) + 8px);
  z-index: 0;
  transition: all var(--transition);
}

.about-image-frame:hover .about-image-border {
  top: -12px;
  left: -12px;
}

.about-text h3 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.about-text p {
  color: var(--text-light);
  margin-bottom: 16px;
  line-height: 1.7;
}

.about-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 24px 0;
}

.info-item {
  font-size: 0.9rem;
  color: var(--text-light);
}

.info-item strong {
  color: var(--text);
}

/* ===== Testimonials ===== */
.testimonials {
  background: var(--bg-alt);
}

.testimonial-slider {
  max-width: 700px;
  margin: 0 auto;
  overflow: hidden;
  position: relative;
}

.testimonial-track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.testimonial-card {
  min-width: 100%;
  padding: 40px 32px;
  text-align: center;
}

.testimonial-card .quote {
  font-size: 3rem;
  color: var(--primary);
  opacity: 0.3;
  margin-bottom: 16px;
}

.testimonial-card p {
  font-size: 1.1rem;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.testimonial-author img {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
}

.testimonial-author h4 {
  font-size: 1rem;
  font-weight: 700;
}

.testimonial-author span {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.slider-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 32px;
}

.slider-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.slider-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(108,92,231,0.08);
}

.slider-dots {
  display: flex;
  gap: 8px;
}

.slider-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
  cursor: pointer;
  transition: all var(--transition);
}

.slider-dot.active {
  background: var(--primary);
  width: 28px;
  border-radius: 4px;
}

/* ===== Contact ===== */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
  align-items: start;
}

.contact-info {
  display: grid;
  gap: 20px;
}

.contact-card {
  background: var(--bg-card);
  padding: 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: all var(--transition);
}

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

.contact-card i {
  font-size: 1.5rem;
  color: var(--primary);
  margin-bottom: 12px;
}

.contact-card h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 6px;
}

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

.contact-form {
  background: var(--bg-card);
  padding: 36px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

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

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

.form-input {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-alt);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: var(--font);
  color: var(--text);
  transition: all var(--transition);
  outline: none;
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(108,92,231,0.1);
}

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

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

.form-submit {
  width: 100%;
  justify-content: center;
  padding: 14px;
  font-size: 1rem;
}

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

.footer-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 48px;
}

.footer-brand h3 {
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-light);
}

.footer-links h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--text-light);
  transition: color var(--transition);
}

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

.footer-newsletter h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.footer-newsletter p {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 16px;
}

.newsletter-form {
  display: flex;
  border: 1.5px solid var(--border);
  border-radius: 50px;
  overflow: hidden;
  background: var(--bg);
}

.newsletter-form input {
  flex: 1;
  padding: 10px 16px;
  border: none;
  outline: none;
  background: transparent;
  font-family: var(--font);
  color: var(--text);
  font-size: 0.9rem;
}

.newsletter-form input::placeholder {
  color: var(--text-muted);
}

.newsletter-form button {
  padding: 10px 16px;
  background: var(--gradient-1);
  color: #fff;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}

.newsletter-form button:hover {
  opacity: 0.9;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-1);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 1.2rem;
  box-shadow: 0 4px 15px rgba(108,92,231,0.3);
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(108,92,231,0.4);
}

/* ===== Scroll Reveal Animation ===== */
[data-aos] {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Lightbox ===== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9998;
  background: rgba(0,0,0,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  padding: 40px;
}

.lightbox.show {
  opacity: 1;
  visibility: visible;
}

.lightbox img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: 8px;
  transform: scale(0.8);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.lightbox.show img {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 30px;
  font-size: 2rem;
  color: #fff;
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity var(--transition);
}

.lightbox-close:hover {
  opacity: 1;
}

/* ===== Project Detail Modal ===== */
.project-modal {
  position: fixed;
  inset: 0;
  z-index: 9998;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  padding: 24px;
}

.project-modal.show {
  opacity: 1;
  visibility: visible;
}

.project-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
}

.project-modal-content {
  position: relative;
  width: 100%;
  max-width: 780px;
  max-height: 85vh;
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow-y: auto;
  box-shadow: 0 30px 80px rgba(0,0,0,0.3);
  transform: translateY(40px) scale(0.95);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.project-modal.show .project-modal-content {
  transform: translateY(0) scale(1);
}

.project-modal-close {
  position: sticky;
  top: 16px;
  float: right;
  margin-right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-alt);
  border: none;
  font-size: 1.4rem;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  z-index: 10;
}

.project-modal-close:hover {
  background: var(--primary);
  color: #fff;
}

.project-modal-body {
  padding: 36px;
}

/* Header */
.project-detail-header {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 28px;
  margin-bottom: 32px;
}

.project-detail-img img {
  width: 100%;
  border-radius: var(--radius-sm);
  object-fit: cover;
  height: 100%;
  min-height: 200px;
  background: var(--bg-alt);
}

.project-detail-title-section h2 {
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 6px;
  line-height: 1.2;
}

.project-detail-category {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--primary);
  background: rgba(108,92,231,0.1);
  padding: 4px 12px;
  border-radius: 12px;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.project-detail-subtitle {
  font-size: 1.05rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 10px;
}

.project-detail-desc {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* Features */
.project-detail-features,
.project-detail-tech,
.project-detail-deploy {
  margin-bottom: 28px;
}

.project-detail-features h3,
.project-detail-tech h3,
.project-detail-deploy h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.project-detail-features h3 i,
.project-detail-tech h3 i,
.project-detail-deploy h3 i {
  color: var(--primary);
  font-size: 1rem;
}

.project-detail-features ul {
  display: grid;
  gap: 10px;
}

.project-detail-features li {
  font-size: 0.9rem;
  color: var(--text-light);
  padding: 10px 16px;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  line-height: 1.5;
  list-style: none;
}

/* Tech Stack */
.tech-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.tech-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 16px;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
}

.tech-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.tech-value {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
}

/* ===== 流程图 ===== */
.flowchart {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
}
.fc-row { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }
.fc-branch { gap: 12px; }
.fc-col { display: flex; flex-direction: column; align-items: center; gap: 4px; min-width: 80px; }
.fc-node {
  background: var(--bg-card);
  color: var(--text);
  border: 1.5px solid var(--border);
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  transition: transform 0.2s;
}
.fc-node:hover { transform: scale(1.05); }
.fc-node.fc-start { background: #6c5ce7; color: #fff; border-color: #6c5ce7; }
.fc-node.fc-main { background: #a29bfe; color: #fff; border-color: #a29bfe; font-size: 0.88rem; padding: 10px 24px; }
.fc-node.fc-sm { font-size: 0.75rem; padding: 5px 10px; }
.fc-node.fc-accent { background: #00cec9; color: #fff; border-color: #00cec9; }
.fc-node.fc-pink { background: #fd79a8; color: #fff; border-color: #fd79a8; }
.fc-node.fc-green { background: #00b894; color: #fff; border-color: #00b894; }
.fc-node.fc-mint { background: #00cec9; color: #fff; border-color: #00cec9; }
.fc-arrow { font-size: 1rem; color: var(--text-muted); line-height: 1; }
.fc-arrow-sm { font-size: 0.7rem; color: var(--text-muted); line-height: 1; }
/* ================= */

/* Deploy Steps */
.deploy-steps {
  display: grid;
  gap: 10px;
}

.deploy-step {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-light);
}

.step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient-1);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  flex-shrink: 0;
}

.deploy-step code {
  background: rgba(108,92,231,0.1);
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.82rem;
}

.project-detail-footer {
  margin-top: 28px;
  text-align: center;
}

.project-detail-footer .btn-outline {
  min-width: 140px;
  justify-content: center;
}

@media (max-width: 768px) {
  .project-detail-header {
    grid-template-columns: 1fr;
  }
  .project-modal-body {
    padding: 24px 20px;
  }
  .tech-grid {
    grid-template-columns: 1fr;
  }
  .project-modal-content {
    max-height: 90vh;
  }
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .hero-title { font-size: 3rem; }
  .section-title { font-size: 2.2rem; }
  .about-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .contact-content {
    grid-template-columns: 1fr;
  }
  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
}

@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: 20px;
    box-shadow: -10px 0 40px rgba(0,0,0,0.1);
    transition: right 0.4s ease;
    z-index: -1;
  }

  .nav-links.open {
    right: 0;
  }

  .hamburger {
    display: flex;
  }

  .hero-title {
    font-size: 2.4rem;
  }

  .section {
    padding: 80px 0;
  }

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

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

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

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

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

@media (max-width: 480px) {
  .hero-title { font-size: 1.8rem; }
  .section-title { font-size: 1.6rem; }
  .skills-grid { grid-template-columns: 1fr; }
  .about-image-frame img { width: 260px; height: 340px; }
  .contact-form { padding: 24px 16px; }
}

/* ===== Toast Notification ===== */
.toast {
  position: fixed;
  top: 100px;
  right: 24px;
  padding: 16px 24px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  box-shadow: var(--shadow-hover);
  border-left: 4px solid var(--primary);
  font-size: 0.9rem;
  font-weight: 500;
  z-index: 9999;
  opacity: 0;
  transform: translateX(60px);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.toast i {
  font-size: 1.2rem;
}

.toast.success i { color: #00cec9; }
.toast.error i { color: #ff6b6b; }