/* =============================================
   1. CSS VARIABLES & RESET
   ============================================= */
:root {
  --primary: #6c5ce7;
  --primary-dark: #5a4bd1;
  --secondary: #00d4ff;
  --accent: #ff6b9d;
  --neon: #00ff88;
  --electric: #4a6cf7;
  --cyan: #00f0ff;
  --purple: #a855f7;

  --bg-primary: #0b0b1a;
  --bg-secondary: #0f0f24;
  --bg-card: rgba(255, 255, 255, 0.04);
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.10);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);

  --text-primary: #f0f0ff;
  --text-secondary: rgba(240, 240, 255, 0.7);
  --text-muted: rgba(240, 240, 255, 0.35);

  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-xl: 36px;

  --transition: 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast: 0.25s ease;
  --transition-slow: 0.7s cubic-bezier(0.22, 1, 0.36, 1);

  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

  --section-padding: 120px 0;
  --nav-height: 76px;
  --max-width: 1200px;
}

/* Light theme overrides */
[data-theme="light"] {
  --bg-primary: #f4f4fc;
  --bg-secondary: #eaeaf5;
  --bg-card: rgba(0, 0, 0, 0.03);
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-border: rgba(0, 0, 0, 0.08);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);

  --text-primary: #1a1a2e;
  --text-secondary: rgba(26, 26, 46, 0.7);
  --text-muted: rgba(26, 26, 46, 0.35);
}
[data-theme="light"] .hero-bg-img { opacity: 0.04; }
[data-theme="light"] .blob { opacity: 0.25; }
[data-theme="light"] .header { background: rgba(244, 244, 252, 0.6); }
[data-theme="light"] .header.scrolled { background: rgba(244, 244, 252, 0.85); }
[data-theme="light"] .footer { background: rgba(244, 244, 252, 0.6); }
[data-theme="light"] .preloader { background: var(--bg-primary); }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-height); }
body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background 0.4s ease, color 0.4s ease;
}
.section, .hero, .header, .footer, .skill-card, .project-card, .testimonial-card, .contact-form, .contact-item, .contact-info-card, .about-frame-inner, .hero-3d-inner {
  transition: background 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary-dark); }

::selection { background: rgba(108, 92, 231, 0.3); color: #fff; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; height: auto; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* =============================================
   2. GRADIENT TEXT
   ============================================= */
.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* =============================================
   3. PRELOADER
   ============================================= */
#preloader {
  position: fixed; inset: 0; z-index: 99999;
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 28px;
  background: var(--bg-primary);
  transition: opacity 0.8s ease, visibility 0.8s ease;
}
#preloader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-ring {
  width: 64px; height: 64px;
  border: 3px solid transparent;
  border-top-color: var(--primary);
  border-right-color: var(--secondary);
  border-bottom-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loader-text {
  font-family: var(--font-heading);
  font-size: 13px;
  letter-spacing: 5px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.loader-bar {
  width: 200px; height: 3px;
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  overflow: hidden;
}
.loader-bar span {
  display: block; height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 2px;
  animation: loadBar 1.5s ease forwards;
}
@keyframes loadBar { to { width: 100%; } }

/* =============================================
   4. THREE.JS CANVAS
   ============================================= */
#three-canvas {
  position: fixed; top: 0; left: 0;
  width: 100vw; height: 100vh;
  z-index: 0; pointer-events: none;
}

/* =============================================
   5. FLOATING BLOBS
   ============================================= */
.blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}
.blob-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(108,92,231,0.12), transparent 70%);
  top: -150px; right: -150px;
  animation: blobFloat1 16s ease-in-out infinite;
}
.blob-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(0,212,255,0.08), transparent 70%);
  bottom: -100px; left: -100px;
  animation: blobFloat2 20s ease-in-out infinite;
}
.blob-3 {
  width: 350px; height: 350px;
  background: radial-gradient(circle, rgba(168,85,247,0.08), transparent 70%);
  top: 50%; left: 60%;
  animation: blobFloat3 14s ease-in-out infinite;
}
@keyframes blobFloat1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(60px, -40px) scale(1.15); }
  66% { transform: translate(-30px, 50px) scale(0.95); }
}
@keyframes blobFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-50px, 30px) scale(1.1); }
  66% { transform: translate(40px, -50px) scale(0.9); }
}
@keyframes blobFloat3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-40px, -60px) scale(1.2); }
}

/* =============================================
   6. NAVIGATION
   ============================================= */
.header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(11, 11, 26, 0.5);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}
.header.scrolled {
  background: rgba(11, 11, 26, 0.85);
  border-bottom-color: var(--glass-border);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}
.nav {
  display: flex; align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav-logo {
  font-family: var(--font-heading);
  font-size: 22px; font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  flex-shrink: 0;
}
.nav-logo span { color: var(--text-primary); -webkit-text-fill-color: var(--text-primary); }
.nav-menu {
  display: flex; align-items: center; gap: 40px;
}
.nav-list { display: flex; gap: 28px; }
.nav-link {
  font-size: 14px; font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  position: relative;
  padding: 4px 0;
}
.nav-link::after {
  content: ''; position: absolute; bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: var(--transition);
  border-radius: 1px;
}
.nav-link:hover { color: var(--text-primary); }
.nav-link:hover::after { width: 100%; }
.nav-cta { display: none; }

/* Theme toggle */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--text-secondary);
  font-size: 18px;
  cursor: pointer;
  transition: var(--transition-fast);
  backdrop-filter: blur(4px);
}
.theme-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(108,92,231,0.1);
  transform: rotate(30deg);
}
.theme-toggle .fa-sun { display: none; }
[data-theme="light"] .theme-toggle .fa-moon { display: none; }
[data-theme="light"] .theme-toggle .fa-sun { display: block; color: #f59e0b; }

.nav-toggle {
  display: none; flex-direction: column; gap: 6px;
  padding: 6px; z-index: 101;
}
.nav-toggle span {
  display: block; width: 26px; height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: var(--transition);
  transform-origin: center;
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { transform: scaleX(0); opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* =============================================
   7. BUTTONS
   ============================================= */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 30px;
  border-radius: 50px;
  font-size: 14px; font-weight: 600;
  font-family: var(--font-body);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  border: none;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 25px rgba(108, 92, 231, 0.3);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 40px rgba(108, 92, 231, 0.5);
}
.btn-primary .btn-glow {
  position: absolute; inset: 0;
  border-radius: 50px;
  border: 2px solid rgba(108, 92, 231, 0.4);
  animation: btnPulse 2s infinite;
}
@keyframes btnPulse {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(1.35); opacity: 0; }
}
.btn-ghost {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-3px);
  border-color: rgba(108,92,231,0.3);
}
.btn-whatsapp {
  background: #25D366;
  color: #fff;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
}
.btn-whatsapp:hover {
  background: #20bd5a;
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.45);
}
.btn-submit {
  width: 100%; justify-content: center;
  padding: 16px; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 16px;
  box-shadow: 0 4px 25px rgba(108,92,231,0.3);
}
.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 35px rgba(108,92,231,0.45);
}

/* =============================================
   8. HERO
   ============================================= */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  position: relative; z-index: 1;
  padding: calc(var(--nav-height) + 40px) 0 40px;
  overflow: hidden;
}
.hero-bg-img {
  position: absolute; inset: 0;
  pointer-events: none;
  background: url('../images/hero-digital.jpg') center center / cover no-repeat;
  opacity: 0.08;
  z-index: 0;
}
.hero-bg-shapes { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.shape {
  position: absolute; border-radius: 50%;
  border: 1px solid rgba(108,92,231,0.08);
}
.shape-1 { width: 600px; height: 600px; top: -200px; right: -200px; animation: shapeRotate 30s linear infinite; }
.shape-2 { width: 400px; height: 400px; bottom: -100px; left: -100px; animation: shapeRotate 25s linear infinite reverse; }
.shape-3 { width: 300px; height: 300px; top: 30%; left: 10%; animation: shapeRotate 35s linear infinite; }
@keyframes shapeRotate { to { transform: rotate(360deg); } }

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}
.hero-content { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 22px;
  border-radius: 50px;
  font-size: 12px; font-weight: 600;
  letter-spacing: 1.5px; text-transform: uppercase;
  background: linear-gradient(135deg, rgba(108,92,231,0.15), rgba(0,212,255,0.1));
  border: 1px solid rgba(108,92,231,0.2);
  color: var(--secondary);
  backdrop-filter: blur(8px);
  margin-bottom: 28px;
}
.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.8rem, 6vw, 4.2rem);
  font-weight: 700;
  line-height: 1.12;
  margin-bottom: 20px;
}
.hero-desc {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.8;
  margin-bottom: 36px;
}
.hero-desc strong { color: var(--text-primary); }
.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }

/* Hero Visual */
.hero-visual {
  position: relative;
  display: flex; align-items: center; justify-content: center;
  perspective: 1000px;
}
.hero-3d-card {
  width: 320px; height: 320px;
  position: relative;
  transform-style: preserve-3d;
  animation: heroFloat 6s ease-in-out infinite;
}
@keyframes heroFloat {
  0%, 100% { transform: translateY(0) rotateY(-2deg); }
  50% { transform: translateY(-20px) rotateY(2deg); }
}
.hero-3d-inner {
  width: 100%; height: 100%;
  border-radius: 40px;
  background: linear-gradient(135deg, rgba(108,92,231,0.15), rgba(0,212,255,0.08));
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(20px);
  display: flex; align-items: center; justify-content: center;
  position: relative;
  overflow: hidden;
  box-shadow:
    0 20px 60px rgba(108,92,231,0.15),
    inset 0 1px 1px rgba(255,255,255,0.1);
}
.hero-photo {
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: 37px;
  z-index: 2;
  position: relative;
}
.hero-orb {
  position: absolute;
  width: 200px; height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(108,92,231,0.2), transparent 70%);
  animation: orbPulse 4s ease-in-out infinite;
}
@keyframes orbPulse {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.5); opacity: 1; }
}

/* Floating badges */
.hero-floating-badge {
  position: absolute;
  padding: 10px 18px;
  border-radius: 14px;
  font-size: 13px; font-weight: 600;
  background: rgba(15,15,36,0.8);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  display: flex; align-items: center; gap: 8px;
  box-shadow: var(--glass-shadow);
  animation: badgeFloat 5s ease-in-out infinite;
}
.hero-floating-badge i { font-size: 16px; }
.badge-1 { top: 10%; right: 0; color: var(--secondary); animation-delay: 0s; }
.badge-2 { bottom: 20%; left: -20px; color: var(--accent); animation-delay: 1s; }
.badge-3 { top: 55%; right: -20px; color: var(--neon); animation-delay: 2s; }
@keyframes badgeFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* Scroll indicator */
.hero-scroll {
  position: absolute; bottom: 30px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column;
  align-items: center; gap: 8px;
  color: var(--text-muted);
  font-size: 11px; letter-spacing: 2px;
  text-transform: uppercase;
}
.scroll-arrow {
  width: 1px; height: 30px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollDown 2s infinite;
}
@keyframes scrollDown {
  0% { transform: scaleY(0); transform-origin: top; opacity: 1; }
  50% { transform: scaleY(1); transform-origin: top; opacity: 0.5; }
  50.001% { transform: scaleY(0); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* =============================================
   9. SECTIONS
   ============================================= */
.section {
  padding: var(--section-padding);
  position: relative; z-index: 1;
}
.section-header {
  text-align: center;
  margin-bottom: 60px;
  max-width: 700px;
  margin-left: auto; margin-right: auto;
}
.section-subtitle {
  display: inline-block;
  font-size: 12px; font-weight: 600;
  letter-spacing: 3px; text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: 14px;
  padding: 6px 18px;
  border-radius: 50px;
  background: rgba(0,212,255,0.06);
  border: 1px solid rgba(0,212,255,0.12);
}
.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* =============================================
   10. ABOUT
   ============================================= */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
}
.about-visual {
  position: relative;
  display: flex; justify-content: center;
}
.about-frame {
  width: 360px; height: 360px;
  border-radius: 40px;
  padding: 4px;
  background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
  position: relative;
  animation: aboutFloat 7s ease-in-out infinite;
}
@keyframes aboutFloat {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-18px) rotate(1deg); }
}
.about-frame-inner {
  width: 100%; height: 100%;
  border-radius: 37px;
  background: var(--bg-primary);
  display: flex; align-items: center; justify-content: center;
  position: relative;
  overflow: hidden;
}
.about-avatar-bg {
  position: absolute; inset: 0;
  background: url('../images/about-laptop.jpg') center center / cover no-repeat;
  opacity: 0.15;
}
.about-avatar-bg::after {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 40%, rgba(108,92,231,0.25), transparent 70%);
}
.about-photo {
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: 37px;
  z-index: 2;
  position: relative;
}
.about-frame-shine {
  position: absolute; inset: 0;
  border-radius: 40px;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,0.06) 45%, transparent 50%);
  pointer-events: none;
}
.about-exp-badge {
  position: absolute;
  bottom: 20px; right: 20px;
  padding: 16px 22px;
  border-radius: 20px;
  background: rgba(15,15,36,0.85);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  text-align: center;
  box-shadow: var(--glass-shadow);
}
.exp-number {
  font-family: var(--font-heading);
  font-size: 2.2rem; font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
}
.exp-label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.about-content { }
.about-heading {
  font-family: var(--font-heading);
  font-size: 1.8rem; margin-bottom: 18px;
}
.about-text {
  color: var(--text-secondary);
  margin-bottom: 18px;
  line-height: 1.8;
}
.about-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 24px;
}
.about-details li {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px;
  background: var(--glass-bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
  font-size: 14px;
}
.about-details li i { color: var(--neon); }

/* =============================================
   11. SKILLS
   ============================================= */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
  gap: 22px;
}
.skill-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 34px 26px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  display: block;
  color: inherit;
  text-decoration: none;
}
.skill-card::after {
  content: 'Learn More →';
  position: absolute;
  bottom: 16px; right: 20px;
  font-size: 13px; font-weight: 500;
  color: var(--secondary);
  opacity: 0;
  transform: translateX(-10px);
  transition: var(--transition);
}
.skill-card:hover::after {
  opacity: 1;
  transform: translateX(0);
}
.skill-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}
.skill-card:hover::before { transform: scaleX(1); }
.skill-card:hover {
  transform: translateY(-8px);
  border-color: rgba(108,92,231,0.25);
  box-shadow:
    0 20px 60px rgba(108,92,231,0.12),
    inset 0 1px 0 rgba(255,255,255,0.05);
}
.skill-icon {
  width: 56px; height: 56px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(108,92,231,0.2), rgba(0,212,255,0.15));
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; color: var(--secondary);
  margin-bottom: 20px;
  transition: var(--transition);
}
.skill-card:hover .skill-icon {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  transform: scale(1.08) rotate(-3deg);
  box-shadow: 0 8px 25px rgba(108,92,231,0.25);
}
.skill-card h3 {
  font-family: var(--font-heading);
  font-size: 17px; margin-bottom: 10px;
}
.skill-card p {
  font-size: 14px; color: var(--text-secondary);
  line-height: 1.7;
}
.skill-bar {
  margin-top: 20px;
  height: 5px;
  background: rgba(255,255,255,0.06);
  border-radius: 4px;
  overflow: hidden;
}
.skill-bar-fill {
  height: 100%; width: 0;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: width 1.5s cubic-bezier(0.22, 1, 0.36, 1);
}

/* =============================================
   12. PROJECTS / SLIDER
   ============================================= */
#projects { position: relative; }
#projects::before {
  content: '';
  position: absolute; inset: 0;
  background: url('../images/bg-marketing.jpg') center center / cover no-repeat;
  opacity: 0.03;
  pointer-events: none;
}
.projects-filter {
  display: flex; justify-content: center; gap: 10px;
  margin-bottom: 36px; flex-wrap: wrap;
}
.filter-btn {
  padding: 8px 22px; border-radius: 50px;
  font-size: 13px; font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  transition: var(--transition-fast);
  backdrop-filter: blur(4px);
}
.filter-btn.active,
.filter-btn:hover {
  background: linear-gradient(135deg, rgba(108,92,231,0.2), rgba(0,212,255,0.1));
  border-color: rgba(108,92,231,0.3);
  color: var(--text-primary);
}
.projects-slider {
  position: relative;
  overflow: hidden;
}
.slider-track {
  display: flex;
  gap: 24px;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}
.project-card {
  flex: 0 0 calc(33.333% - 16px);
  min-width: 300px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  transition: var(--transition);
}
.project-card:hover {
  transform: translateY(-8px);
  border-color: rgba(108,92,231,0.25);
  box-shadow: 0 20px 60px rgba(108,92,231,0.12);
}
.project-card.hidden { display: none; }
.project-img {
  height: 220px;
  overflow: hidden;
  position: relative;
}
.project-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.project-card:hover .project-img img { transform: scale(1.08); }
.project-tag {
  position: absolute; top: 16px; left: 16px;
  padding: 5px 14px;
  border-radius: 50px;
  font-size: 11px; font-weight: 600;
  background: rgba(11,11,26,0.7);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--secondary);
  text-transform: uppercase; letter-spacing: 0.5px;
}
.project-body { padding: 22px; }
.project-body h3 {
  font-family: var(--font-heading);
  font-size: 16px; margin-bottom: 10px;
}
.project-body p {
  font-size: 14px; color: var(--text-secondary);
  line-height: 1.7; margin-bottom: 16px;
}
.project-link {
  font-size: 13px; font-weight: 500;
  color: var(--secondary);
  display: inline-flex; align-items: center; gap: 6px;
  transition: var(--transition-fast);
}
.project-link:hover { color: var(--primary); gap: 10px; }
.slider-nav {
  display: flex; align-items: center; justify-content: center;
  gap: 20px; margin-top: 28px;
}
.slider-btn {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--text-primary);
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition-fast);
  font-size: 16px;
}
.slider-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  transform: scale(1.05);
}
.slider-dots {
  display: flex; gap: 8px;
}
.slider-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  transition: var(--transition-fast);
  cursor: pointer;
}
.slider-dot.active { background: var(--primary); width: 24px; border-radius: 4px; }

/* =============================================
   13. TESTIMONIALS
   ============================================= */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.testimonial-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  backdrop-filter: blur(8px);
  position: relative;
  overflow: hidden;
}
.testimonial-card::before {
  content: '';
  position: absolute; inset: 0;
  background: url('../images/testimonial-bg.jpg') center center / cover no-repeat;
  opacity: 0.04;
  pointer-events: none;
}
  transition: var(--transition);
}
.testimonial-card:hover {
  transform: translateY(-5px);
  border-color: rgba(108,92,231,0.2);
  box-shadow: 0 15px 40px rgba(108,92,231,0.08);
}
.testi-stars { margin-bottom: 16px; color: #ffd700; font-size: 14px; letter-spacing: 2px; }
.testimonial-card p {
  color: var(--text-secondary);
  font-size: 15px; line-height: 1.7;
  font-style: italic;
  margin-bottom: 16px;
}
.testimonial-card cite {
  font-style: normal; font-size: 13px;
  color: var(--text-muted);
  display: block;
}

/* =============================================
   14. CONTACT
   ============================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
}
.contact-info { display: flex; flex-direction: column; gap: 30px; }
.contact-info-card {
  padding: 32px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  backdrop-filter: blur(8px);
}
.contact-info-card h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem; margin-bottom: 12px;
}
.contact-info-card p { color: var(--text-secondary); line-height: 1.7; }
.contact-details { display: flex; flex-direction: column; gap: 18px; }
.contact-item {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 16px 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
}
.contact-icon {
  width: 44px; height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(108,92,231,0.15), rgba(0,212,255,0.1));
  display: flex; align-items: center; justify-content: center;
  color: var(--secondary); font-size: 18px;
  flex-shrink: 0;
}
.contact-item h4 { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.contact-item p, .contact-item a { font-size: 14px; color: var(--text-secondary); }
.contact-item a:hover { color: var(--secondary); }
.contact-form {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 36px;
  backdrop-filter: blur(12px);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; font-size: 13px; font-weight: 500;
  margin-bottom: 8px; color: var(--text-secondary);
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
  background: rgba(255,255,255,0.03);
  color: var(--text-primary);
  font-size: 14px;
  transition: var(--transition-fast);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(108,92,231,0.15);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-group select option { background: var(--bg-primary); color: #fff; }

/* =============================================
   15. WHATSAPP FLOATING BUTTON
   ============================================= */
.whatsapp-float {
  position: fixed;
  bottom: 24px; right: 24px;
  z-index: 99;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.35);
  transition: var(--transition);
  animation: whatsappPulse 2s infinite;
}
.whatsapp-float:hover {
  transform: scale(1.1) translateY(-3px);
  box-shadow: 0 8px 30px rgba(37, 211, 102, 0.5);
}
@keyframes whatsappPulse {
  0% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.35); }
  50% { box-shadow: 0 4px 35px rgba(37, 211, 102, 0.55); }
  100% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.35); }
}

/* =============================================
   16. FOOTER
   ============================================= */
.footer {
  position: relative; z-index: 1;
  border-top: 1px solid var(--glass-border);
  padding: 50px 0;
  background: rgba(11,11,26,0.5);
  backdrop-filter: blur(20px);
}
.footer-content {
  display: flex; justify-content: space-between;
  align-items: center; flex-wrap: wrap; gap: 24px;
}
.footer-logo {
  font-family: var(--font-heading);
  font-size: 18px; font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.footer-text { font-size: 13px; color: var(--text-muted); }
.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-links a {
  font-size: 14px; color: var(--text-secondary);
  transition: var(--transition-fast);
}
.footer-links a:hover { color: var(--secondary); }
.footer-socials { display: flex; gap: 12px; }
.footer-socials a {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--glass-border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition);
  font-size: 16px;
}
.footer-socials a:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(108,92,231,0.1);
  transform: translateY(-3px);
}

/* =============================================
   17. REVEAL ANIMATIONS
   ============================================= */
[data-reveal] {
  opacity: 0;
  transition: opacity 0.8s ease, transform 0.8s ease;
}
[data-reveal="fade-up"] { transform: translateY(40px); }
[data-reveal="fade-down"] { transform: translateY(-40px); }
[data-reveal="fade-right"] { transform: translateX(-50px); }
[data-reveal="fade-left"] { transform: translateX(50px); }
[data-reveal="fade-in"] { transform: none; }
[data-reveal].visible {
  opacity: 1; transform: translate(0);
}

/* =============================================
   18. RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .hero-container { grid-template-columns: 1fr; text-align: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-buttons { justify-content: center; }
  .hero-visual { order: -1; }
  .hero-3d-card { width: 240px; height: 240px; }
  .badge-1 { top: 0; right: 10%; }
  .badge-2 { bottom: 10%; left: 5%; }
  .badge-3 { top: 40%; right: 0; }
  .about-grid { grid-template-columns: 1fr; text-align: center; }
  .about-details { grid-template-columns: 1fr; max-width: 400px; margin: 24px auto 0; }
  .about-details li { justify-content: center; }
  .about-frame { width: 280px; height: 280px; }
  .about-photo { border-radius: 37px; }
  .contact-grid { grid-template-columns: 1fr; }
  .project-card { flex: 0 0 calc(50% - 12px); }
}

@media (max-width: 768px) {
  :root { --section-padding: 80px 0; }
  .nav-menu {
    position: fixed; top: 0; right: -100%;
    width: 300px; height: 100vh;
    flex-direction: column;
    background: rgba(11,11,26,0.95);
    backdrop-filter: blur(24px);
    border-left: 1px solid var(--glass-border);
    padding: 90px 28px 28px;
    gap: 28px;
    transition: var(--transition);
    align-items: flex-start;
  }
  .nav-menu.active { right: 0; }
  .nav-list { flex-direction: column; gap: 20px; }
  .nav-cta { display: inline-flex; }
  .nav-toggle { display: flex; }
  .hero-title { font-size: 2.2rem; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
  .hero-3d-card { width: 200px; height: 200px; }
  .hero-floating-badge { font-size: 11px; padding: 6px 12px; }
  .badge-1 { top: -10px; }
  .project-card { flex: 0 0 100%; min-width: 0; }
  .form-row { grid-template-columns: 1fr; }
  .footer-content { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
  .about-frame { width: 220px; height: 220px; }
  .about-photo { border-radius: 37px; }
  .section-title { font-size: 1.7rem; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-title { font-size: 1.8rem; }
  .hero { padding-top: calc(var(--nav-height) + 20px); }
  .hero-3d-card { width: 160px; height: 160px; }
  .hero-floating-badge { display: none; }
  .contact-form { padding: 24px 16px; }
  .whatsapp-float { width: 48px; height: 48px; font-size: 24px; bottom: 16px; right: 16px; }
}