:root {
  /* Typography */
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Outfit', sans-serif;

  /* Accent & Brand Colors */
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.4);
  --secondary: #06b6d4;
  --secondary-glow: rgba(6, 182, 212, 0.35);
  --accent-pink: #ec4899;
  --accent-yellow: #f59e0b;
  --accent-green: #10b981;

  /* Gradient Palette */
  --gradient-brand: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #06b6d4 100%);
  --gradient-text: linear-gradient(135deg, #818cf8 0%, #c084fc 50%, #38bdf8 100%);
  --gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.01) 100%);

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme (Default) */
body.dark-theme {
  --bg-body: #0a0d14;
  --bg-surface: #111726;
  --bg-surface-elevated: #182236;
  --bg-card: rgba(17, 23, 38, 0.7);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(99, 102, 241, 0.4);
  
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --nav-bg: rgba(10, 13, 20, 0.85);
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.6);
  --glow-color-1: rgba(99, 102, 241, 0.15);
  --glow-color-2: rgba(6, 182, 212, 0.12);
  --glow-color-3: rgba(236, 72, 153, 0.1);
  --grid-color: rgba(255, 255, 255, 0.025);
}

/* Light Theme */
body.light-theme {
  --bg-body: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.85);
  --border-color: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(99, 102, 241, 0.45);

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #64748b;

  --nav-bg: rgba(248, 250, 252, 0.88);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.12);
  --glow-color-1: rgba(99, 102, 241, 0.08);
  --glow-color-2: rgba(6, 182, 212, 0.07);
  --glow-color-3: rgba(236, 72, 153, 0.06);
  --grid-color: rgba(0, 0, 0, 0.03);
}

/* --------------------------------------------------------------------------
   2. RESET & BASE
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  position: relative;
  min-height: 100vh;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul {
  list-style: none;
}

button, input, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
  background: none;
}

button {
  cursor: pointer;
}

/* --------------------------------------------------------------------------
   3. BACKGROUND AMBIENT & GRID
   -------------------------------------------------------------------------- */
.ambient-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: -2;
  opacity: 0.8;
  transition: background var(--transition-normal);
}

.glow-1 {
  width: 500px;
  height: 500px;
  top: -100px;
  left: -100px;
  background: var(--glow-color-1);
  animation: floatOrb 18s ease-in-out infinite alternate;
}

.glow-2 {
  width: 450px;
  height: 450px;
  top: 40%;
  right: -100px;
  background: var(--glow-color-2);
  animation: floatOrb 15s ease-in-out infinite alternate-reverse;
}

.glow-3 {
  width: 400px;
  height: 400px;
  bottom: 5%;
  left: 20%;
  background: var(--glow-color-3);
  animation: floatOrb 20s ease-in-out infinite alternate;
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(60px, 40px) scale(1.1); }
  100% { transform: translate(-40px, 80px) scale(0.95); }
}

.bg-grid-overlay {
  position: fixed;
  inset: 0;
  background-image: linear-gradient(to right, var(--grid-color) 1px, transparent 1px),
                    linear-gradient(to bottom, var(--grid-color) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: -1;
}

/* --------------------------------------------------------------------------
   4. LAYOUT & UTILITIES
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5.5rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 3.5rem auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  border-radius: 9999px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.25);
  color: var(--primary);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 0.85rem;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
}

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

.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-card:hover {
  border-color: var(--border-hover);
}

/* Helper color classes */
.text-primary { color: var(--primary); }
.text-orange { color: #f97316; }
.text-blue { color: #3b82f6; }
.text-yellow { color: #eab308; }
.text-cyan { color: #06b6d4; }
.text-red { color: #ef4444; }
.text-white { color: #e2e8f0; }
.text-purple { color: #a855f7; }
.text-pink { color: #ec4899; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.8rem 1.6rem;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-sm {
  padding: 0.55rem 1.1rem;
  font-size: 0.85rem;
  border-radius: 8px;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #ffffff;
  box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--primary-glow);
  color: #ffffff;
}

.btn-secondary {
  background: var(--bg-surface-elevated);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(99, 102, 241, 0.08);
}

.btn-whatsapp {
  background: #25d366;
  color: #ffffff;
  font-weight: 600;
}

.btn-whatsapp:hover {
  background: #20ba5a;
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.35);
  color: #ffffff;
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   5. NAVBAR
   -------------------------------------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 72px;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  height: 64px;
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
}

.logo-bracket {
  color: var(--primary);
  font-weight: 700;
}

.logo-name {
  color: var(--text-main);
  margin: 0 1px;
}

.logo-dot {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 1.8rem;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  position: relative;
  padding: 0.3rem 0;
}

.nav-link i {
  font-size: 0.85rem;
}

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

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.theme-btn {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 1.05rem;
  transition: all var(--transition-fast);
}

.theme-btn:hover {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--primary);
  color: var(--primary);
}

body.dark-theme .icon-sun { display: block; }
body.dark-theme .icon-moon { display: none; }
body.light-theme .icon-sun { display: none; }
body.light-theme .icon-moon { display: block; }

.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 38px;
  height: 38px;
  padding: 10px 8px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.hamburger-bar {
  width: 100%;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.hamburger-btn.active .hamburger-bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.hamburger-btn.active .hamburger-bar:nth-child(2) {
  opacity: 0;
}
.hamburger-btn.active .hamburger-bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   6. HERO SECTION
   -------------------------------------------------------------------------- */
.hero-section {
  padding-top: 8rem;
  padding-bottom: 5.5rem;
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
  gap: 3rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0.95rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 9999px;
  color: var(--accent-green);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
}

.status-pulse {
  width: 8px;
  height: 8px;
  background: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulseGreen 2s infinite;
}

@keyframes pulseGreen {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 0.8rem;
}

.hero-name {
  font-size: 3.4rem;
}

.typing-wrapper {
  font-size: 1.45rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  min-height: 2.2rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.typing-text {
  color: var(--secondary);
  font-weight: 700;
  margin-left: 0.35rem;
}

.typing-cursor {
  color: var(--primary);
  font-weight: 300;
  animation: blinkCursor 0.9s infinite;
}

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

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 540px;
  line-height: 1.7;
}

.hero-desc strong {
  color: var(--text-main);
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-bottom: 2.5rem;
}

.hero-socials {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.social-label {
  font-size: 0.88rem;
  color: var(--text-dim);
  font-weight: 500;
}

.social-links {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.social-btn {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: all var(--transition-fast);
}

.social-btn:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 4px 15px var(--primary-glow);
}

/* Hero Visual & Avatar Card */
.hero-visual {
  display: flex;
  justify-content: center;
  position: relative;
}

.avatar-card-wrapper {
  position: relative;
  width: 320px;
}

.avatar-card-glow {
  position: absolute;
  inset: -15px;
  background: var(--gradient-brand);
  border-radius: 30px;
  filter: blur(28px);
  opacity: 0.35;
  z-index: 1;
}

.avatar-card {
  position: relative;
  z-index: 2;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 1.75rem;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.avatar-image-box {
  width: 190px;
  height: 190px;
  margin: 0 auto 1.2rem auto;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  border: 3px solid rgba(99, 102, 241, 0.3);
}

.avatar-illustration {
  width: 100%;
  height: 100%;
}

.avatar-info h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.avatar-info p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.8rem;
}

.availability-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  color: var(--accent-green);
  background: rgba(16, 185, 129, 0.1);
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  font-weight: 600;
}

.dot-online {
  width: 6px;
  height: 6px;
  background: var(--accent-green);
  border-radius: 50%;
}

/* Floating tech badges */
.floating-badge {
  position: absolute;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.85rem;
  background: var(--bg-surface-elevated);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  box-shadow: var(--shadow-md);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-main);
  animation: floatBadge 4s ease-in-out infinite alternate;
}

.badge-html {
  top: 10px;
  left: -25px;
  color: #f97316;
  animation-delay: 0s;
}

.badge-css {
  bottom: 80px;
  left: -35px;
  color: #38bdf8;
  animation-delay: 1.2s;
}

.badge-js {
  top: 40px;
  right: -25px;
  color: #eab308;
  animation-delay: 0.6s;
}

.badge-git {
  bottom: 40px;
  right: -30px;
  color: #ef4444;
  animation-delay: 1.8s;
}

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

/* --------------------------------------------------------------------------
   7. ABOUT SECTION
   -------------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 2rem;
  align-items: start;
}

.about-bio-card {
  padding: 2.5rem;
}

.about-bio-card h3 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  margin-bottom: 1.2rem;
}

.about-bio-card p {
  color: var(--text-muted);
  margin-bottom: 1rem;
  font-size: 1.02rem;
  line-height: 1.7;
}

.about-bio-card p strong {
  color: var(--text-main);
}

.about-personal-info {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.info-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
}

.info-label {
  font-weight: 600;
  color: var(--text-main);
  min-width: 100px;
}

.info-value {
  color: var(--text-muted);
}

.email-copy {
  cursor: pointer;
  background: rgba(99, 102, 241, 0.1);
  padding: 0.2rem 0.55rem;
  border-radius: 6px;
  color: var(--primary);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.email-copy:hover {
  background: var(--primary);
  color: #ffffff;
}

.about-stats-column {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.stat-card {
  padding: 1.6rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.stat-icon-box {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.stat-purple {
  background: rgba(99, 102, 241, 0.15);
  color: var(--primary);
}

.stat-cyan {
  background: rgba(6, 182, 212, 0.15);
  color: var(--secondary);
}

.stat-pink {
  background: rgba(236, 72, 153, 0.15);
  color: var(--accent-pink);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--text-main);
}

.stat-title {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
}

.stat-detail {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   8. SKILLS SECTION
   -------------------------------------------------------------------------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.skill-category-card {
  padding: 2.2rem;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.8rem;
}

.category-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}

.icon-code {
  background: rgba(99, 102, 241, 0.15);
  color: var(--primary);
}

.icon-tool {
  background: rgba(6, 182, 212, 0.15);
  color: var(--secondary);
}

.category-header h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
}

.category-header p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.skill-items {
  display: flex;
  flex-direction: column;
  gap: 1.3rem;
}

.skill-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 0.45rem;
}

.skill-name {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.skill-percent {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.skill-progress-bar {
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 9999px;
  overflow: hidden;
}

body.light-theme .skill-progress-bar {
  background: rgba(0, 0, 0, 0.08);
}

.skill-progress-fill {
  height: 100%;
  background: var(--gradient-brand);
  border-radius: 9999px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.tech-cloud {
  padding: 1.8rem 2.2rem;
  text-align: center;
}

.tech-cloud h4 {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 1.2rem;
}

.badges-wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.65rem;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 1rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.badge-tag:hover {
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.12);
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   9. PROJECTS SECTION
   -------------------------------------------------------------------------- */
.filter-controls {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2.5rem;
}

.filter-btn {
  padding: 0.55rem 1.25rem;
  border-radius: 9999px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 4px 12px var(--primary-glow);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: 18px;
}

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

.project-thumbnail {
  position: relative;
  height: 180px;
  overflow: hidden;
}

.thumbnail-banner {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  transition: transform var(--transition-slow);
}

.project-card:hover .thumbnail-banner {
  transform: scale(1.05);
}

.banner-history {
  background: linear-gradient(135deg, #78350f 0%, #451a03 50%, #1e1b4b 100%);
  color: #fde68a;
}
.banner-history i { font-size: 3rem; }

.banner-ai {
  background: linear-gradient(135deg, #0e7490 0%, #1e1b4b 60%, #4c1d95 100%);
  color: #67e8f9;
}
.banner-ai i { font-size: 3rem; }

.banner-absensi {
  background: linear-gradient(135deg, #065f46 0%, #111827 60%, #047857 100%);
  color: #6ee7b7;
}
.banner-absensi i { font-size: 3rem; }

.banner-portfolio {
  background: linear-gradient(135deg, #4338ca 0%, #312e81 50%, #1e1b4b 100%);
  color: #a5b4fc;
}
.banner-portfolio i { font-size: 3rem; }

.thumbnail-caption {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.project-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 0.3rem 0.75rem;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #ffffff;
}

.project-content {
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.65rem;
}

.project-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.5rem;
}

.project-tags span {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary);
  border-radius: 6px;
}

.project-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* --------------------------------------------------------------------------
   10. TIMELINE / EDUCATION SECTION
   -------------------------------------------------------------------------- */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), var(--secondary));
}

.timeline-item {
  position: relative;
  margin-bottom: 2.2rem;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -2rem;
  top: 18px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-body);
  border: 3px solid var(--primary);
  box-shadow: 0 0 10px var(--primary-glow);
  z-index: 1;
}

.timeline-content {
  padding: 1.8rem 2rem;
}

.timeline-time {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(99, 102, 241, 0.1);
  padding: 0.2rem 0.65rem;
  border-radius: 9999px;
  margin-bottom: 0.65rem;
}

.timeline-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.timeline-subtitle {
  color: var(--secondary);
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.timeline-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.timeline-tags span {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   11. CONTACT SECTION
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 2rem;
  align-items: start;
}

.contact-info-card,
.contact-form-card {
  padding: 2.2rem;
}

.contact-info-card h3,
.contact-form-card h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: 0.8rem;
}

.contact-info-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.8rem;
}

.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.channel-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.channel-item:hover {
  border-color: var(--primary);
  transform: translateX(4px);
}

.channel-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  flex-shrink: 0;
}

.icon-email {
  background: rgba(99, 102, 241, 0.15);
  color: var(--primary);
}

.icon-github {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}
body.light-theme .icon-github {
  background: rgba(0, 0, 0, 0.1);
  color: #000000;
}

.icon-location {
  background: rgba(236, 72, 153, 0.15);
  color: var(--accent-pink);
}

.channel-details {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.channel-name {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-weight: 600;
  text-transform: uppercase;
}

.channel-value {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.quick-contact-box {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.quick-contact-box h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.quick-contact-box p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.form-input {
  width: 100%;
  padding: 0.8rem 1rem;
  border-radius: 10px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-error {
  display: none;
  font-size: 0.78rem;
  color: #ef4444;
  font-weight: 500;
}

.form-group.has-error .form-input {
  border-color: #ef4444;
}

.form-group.has-error .form-error {
  display: block;
}

.btn-submit {
  margin-top: 0.5rem;
  width: 100%;
  padding: 0.95rem;
}

/* --------------------------------------------------------------------------
   12. FOOTER
   -------------------------------------------------------------------------- */
.footer {
  padding: 4rem 0 2rem 0;
  border-top: 1px solid var(--border-color);
  background: var(--bg-surface);
}

.footer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.8rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.4rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.8rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
}

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

.footer-bottom {
  width: 100%;
  padding-top: 1.8rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
  color: var(--text-dim);
}

.back-to-top {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.back-to-top:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  transform: translateY(-3px);
}

/* --------------------------------------------------------------------------
   13. TOAST NOTIFICATION & MODAL
   -------------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.toast {
  min-width: 280px;
  max-width: 380px;
  padding: 0.9rem 1.2rem;
  border-radius: 12px;
  background: var(--bg-surface-elevated);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  font-weight: 500;
  transform: translateX(120%);
  transition: transform var(--transition-normal);
}

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

.toast-success {
  border-left: 4px solid var(--accent-green);
}
.toast-success i { color: var(--accent-green); }

.toast-info {
  border-left: 4px solid var(--primary);
}
.toast-info i { color: var(--primary); }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  z-index: 2100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-overlay.active {
  display: flex;
}

.modal-box {
  width: 100%;
  max-width: 480px;
  padding: 2rem;
  position: relative;
  animation: modalScale 0.25s ease-out;
}

@keyframes modalScale {
  0% { transform: scale(0.92); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 18px;
  font-size: 1.6rem;
  color: var(--text-dim);
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-main);
}

.modal-header h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  margin-bottom: 0.8rem;
}

.modal-body p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
}

/* --------------------------------------------------------------------------
   14. RESPONSIVE DESIGN (MEDIA QUERIES)
   -------------------------------------------------------------------------- */
@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3.5rem;
  }

  .hero-content {
    order: 2;
  }

  .hero-visual {
    order: 1;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta-group,
  .hero-socials,
  .typing-wrapper {
    justify-content: center;
  }

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

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

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

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

@media (max-width: 768px) {
  .section {
    padding: 4.5rem 0;
  }

  .section-title {
    font-size: 2rem;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-name {
    font-size: 2.7rem;
  }

  .nav-cta {
    display: none;
  }

  .hamburger-btn {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
    transform: translateY(-150%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-normal);
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
    box-shadow: var(--shadow-lg);
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.2rem;
  }

  .nav-link {
    font-size: 1.05rem;
    width: 100%;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .avatar-card-wrapper {
    width: 280px;
  }

  .floating-badge {
    display: none; /* Hide on very small screens to avoid clutter */
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.1rem;
  }

  .hero-name {
    font-size: 2.3rem;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta-group .btn {
    width: 100%;
  }

  .about-bio-card,
  .skill-category-card,
  .contact-info-card,
  .contact-form-card {
    padding: 1.5rem;
  }
}