/* ============================================
   CSS Variables & Theme System
   ============================================ */
:root {
  /* Colors - Dark Theme (Default) */
  --bg-primary: #030712;
  --bg-secondary: #0f172a;
  --bg-tertiary: #1e293b;
  --bg-card: rgba(15, 23, 42, 0.8);
  --bg-card-hover: rgba(30, 41, 59, 0.9);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;

  --accent-primary: #3b82f6;
  --accent-secondary: #60a5fa;
  --accent-tertiary: #2563eb;
  --accent-gradient: linear-gradient(
    135deg,
    #3b82f6 0%,
    #2563eb 50%,
    #1d4ed8 100%
  );
  --accent-gradient-light: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);

  --border-color: rgba(59, 130, 246, 0.15);
  --border-hover: rgba(59, 130, 246, 0.35);
  --section-border: rgba(59, 130, 246, 0.2);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 60px rgba(59, 130, 246, 0.4);
  --shadow-glow-sm: 0 0 30px rgba(59, 130, 246, 0.3);

  /* Typography */
  --font-primary: "Sora", sans-serif;
  --font-secondary: "Inter", sans-serif;

  /* Spacing */
  --section-padding: 100px;
  --container-padding: 48px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Sidebar */
  --sidebar-width: 260px;
  --sidebar-collapsed-width: 100px;
}

/* Light Theme */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e2e8f0;
  --bg-card: rgba(255, 255, 255, 0.9);
  --bg-card-hover: rgba(241, 245, 249, 1);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #94a3b8;

  --border-color: rgba(59, 130, 246, 0.12);
  --border-hover: rgba(59, 130, 246, 0.25);
  --section-border: rgba(59, 130, 246, 0.15);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 60px rgba(59, 130, 246, 0.2);
  --shadow-glow-sm: 0 0 30px rgba(59, 130, 246, 0.15);
}

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

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

body {
  font-family: var(--font-secondary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition:
    background-color var(--transition-base),
    color var(--transition-base);
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul,
ol {
  list-style: none;
}

/* ============================================
   Cursor Follower
   ============================================ */
.cursor-follower {
  position: fixed;
  width: 20px;
  height: 20px;
  border: 2px solid var(--accent-primary);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition:
    transform 0.1s ease,
    width 0.2s ease,
    height 0.2s ease,
    opacity 0.2s ease;
  opacity: 0;
  mix-blend-mode: difference;
}

.cursor-follower.active {
  opacity: 1;
}

.cursor-follower.hover {
  width: 50px;
  height: 50px;
  background: rgba(59, 130, 246, 0.15);
}

@media (max-width: 1024px) {
  .cursor-follower {
    display: none;
  }
}

/* ============================================
   Theme Toggle
   ============================================ */
.theme-toggle {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 56px;
  height: 56px;
  background: var(--accent-gradient);
  border: none;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-glow-sm);
}

.theme-toggle:hover {
  transform: scale(1.1) rotate(15deg);
  box-shadow: var(--shadow-glow);
}

.theme-toggle svg {
  width: 24px;
  height: 24px;
  color: white;
  transition: all var(--transition-base);
}

.theme-toggle .moon-icon {
  display: block;
}

.theme-toggle .sun-icon {
  display: none;
}

[data-theme="light"] .theme-toggle .moon-icon {
  display: none;
}

[data-theme="light"] .theme-toggle .sun-icon {
  display: block;
}

/* ============================================
   Mobile Navigation Toggle - Improved
   ============================================ */
.mobile-nav-toggle {
  position: fixed;
  top: 16px;
  left: 16px;
  width: 56px;
  height: 56px;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px); /* support Safari */
  border: 1px solid var(--border-color);
  border-radius: 16px; /* lebih modern & lembut */
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1002; /* naikkan sedikit biar di atas cursor follower */
  transition:
    all var(--transition-base),
    transform 0.25s ease,
    background-color 0.25s ease;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}

.mobile-nav-toggle:hover,
.mobile-nav-toggle:focus-visible {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  transform: scale(1.08);
  box-shadow: var(--shadow-glow-sm);
}

.mobile-nav-toggle:active {
  transform: scale(0.96);
}

/* Hamburger lines */
.hamburger {
  width: 26px;
  height: 2.5px;
  background: var(--text-primary);
  position: relative;
  transition: background 0.3s ease;
  border-radius: 2px;
}

.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  width: 26px;
  height: 2.5px;
  background: var(--text-primary);
  border-radius: 2px;
  left: 0;
  transition: all var(--transition-base);
}

.hamburger::before {
  top: -9px;
}

.hamburger::after {
  top: 9px;
}

/* Active state (X icon) */
.mobile-nav-toggle.active .hamburger {
  background: transparent;
}

.mobile-nav-toggle.active .hamburger::before {
  top: 0;
  transform: rotate(45deg);
  background: var(--accent-primary);
}

.mobile-nav-toggle.active .hamburger::after {
  top: 0;
  transform: rotate(-45deg);
  background: var(--accent-primary);
}

/* Responsif - ukuran & posisi */
@media (max-width: 1024px) {
  .mobile-nav-toggle {
    display: flex;
  }
}

@media (max-width: 600px) {
  .mobile-nav-toggle {
    width: 52px;
    height: 52px;
    top: 12px;
    left: 12px;
    border-radius: 14px;
  }

  .hamburger,
  .hamburger::before,
  .hamburger::after {
    width: 24px;
    height: 2.2px;
  }

  .hamburger::before {
    top: -8px;
  }

  .hamburger::after {
    top: 8px;
  }
}

@media (max-width: 400px) {
  .mobile-nav-toggle {
    width: 48px;
    height: 48px;
    top: 10px;
    left: 10px;
    border-radius: 12px;
  }

  .hamburger,
  .hamburger::before,
  .hamburger::after {
    width: 22px;
    height: 2px;
  }

  .hamburger::before {
    top: -7px;
  }

  .hamburger::after {
    top: 7px;
  }
}

/* ============================================
   Layout
   ============================================ */
.layout {
  display: flex;
  min-height: 100vh;
}

/* ============================================
   Sidebar - Improved
   ============================================ */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  z-index: 100;
  transition:
    transform var(--transition-base),
    background-color var(--transition-base),
    width var(--transition-base);
  display: flex;
  flex-direction: column;
}

.sidebar.collapsed {
  width: var(--sidebar-collapsed-width);
}

.sidebar-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 32px 24px;
  overflow-y: auto;
  transition: padding var(--transition-base);
}

.sidebar.collapsed .sidebar-inner {
  padding: 32px 12px;
}

.sidebar-header {
  margin-bottom: 20px;
  text-align: center;
  position: relative;
  padding: 0 8px;
}

.profile-photo {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  margin: 0 auto 16px auto;
  box-shadow: var(--shadow-glow);
  border: 3px solid rgba(59, 130, 246, 0.3);
  transition: all var(--transition-base);
  display: block;
}

.sidebar.collapsed .profile-photo {
  width: 48px;
  height: 48px;
  margin: 40px auto 0;
  border-width: 2px;
}

.sidebar.collapsed .sidebar-toggle {
  right: 50%;
  transform: translate(50%, -50%) rotate(180deg);
}

.full-name {
  font-family: var(--font-primary);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: -0.5px;
}

.description {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 400;
  opacity: 0.9;
}

.sidebar.collapsed .full-name,
.sidebar.collapsed .description {
  display: none;
}

/* Sidebar Toggle Button */
.sidebar-toggle {
  position: absolute;
  top: 12px;
  right: 15px;
  width: 36px;
  height: 36px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-base);
  border: 1px solid transparent;
  backdrop-filter: blur(4px);
}

.sidebar-toggle:hover {
  background: rgba(59, 130, 246, 0.25);
  color: var(--accent-primary);
  border-color: rgba(59, 130, 246, 0.3);
  transform: translateY(-1px);
}

.sidebar-toggle svg {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-base);
}

.sidebar.collapsed .sidebar-toggle svg {
  transform: rotate(180deg);
}

/* Nav link saat collapsed */
.sidebar.collapsed .nav-link {
  padding: 14px 0;
  justify-content: center;
}

.sidebar.collapsed .nav-icon {
  width: 28px;
  height: 28px;
}

/* Main content margin saat collapsed */
.sidebar.collapsed ~ .main {
  margin-left: var(--sidebar-collapsed-width);
}

/* Mobile nav toggle - lebih nyaman */
.mobile-nav-toggle {
  width: 56px;
  height: 56px;
  border-radius: 14px;
}

@media (max-width: 480px) {
  .mobile-nav-toggle {
    width: 52px;
    height: 52px;
    top: 12px;
    left: 12px;
  }

  .sidebar {
    width: 300px;
  }
}

.sidebar-toggle {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 32px;
  height: 32px;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-base);
}

.sidebar-toggle:hover {
  color: var(--accent-primary);
}

.sidebar-toggle svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-base);
}

.sidebar.collapsed .sidebar-toggle svg {
  transform: rotate(180deg);
}

@media (max-width: 1024px) {
  .sidebar-toggle {
    display: none;
  }
}

/* Navigation */
.nav {
  flex: 1;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.sidebar.collapsed .nav-link {
  padding: 14px 12px;
  justify-content: center;
  gap: 0;
}

.nav-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--accent-gradient);
  transform: scaleY(0);
  transition: transform var(--transition-base);
  border-radius: 0 4px 4px 0;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.nav-link:hover::before {
  transform: scaleY(0.5);
}

.nav-link.active {
  color: var(--accent-primary);
  background: rgba(59, 130, 246, 0.1);
}

.nav-link.active::before {
  transform: scaleY(1);
}

.nav-indicator {
  width: 6px;
  height: 6px;
  background: transparent;
  border-radius: 50%;
  transition: all var(--transition-base);
  flex-shrink: 0;
}

.nav-link:hover .nav-indicator,
.nav-link.active .nav-indicator {
  background: var(--accent-primary);
  box-shadow: 0 0 12px var(--accent-primary);
}

.nav-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: var(--text-secondary);
  transition: color var(--transition-base);
}

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

.sidebar.collapsed .nav-icon {
  margin: 0 auto;
}

.nav-text {
  transition: opacity var(--transition-base);
}

.sidebar.collapsed .nav-text {
  opacity: 0;
  width: 0;
  overflow: hidden;
}

/* Sidebar Footer */
.sidebar-footer {
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
  margin-top: auto;
  padding-bottom: 16px;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  color: var(--text-tertiary);
  transition: all var(--transition-base);
  border: 1px solid transparent;
  background: rgba(59, 130, 246, 0.05);
}

.social-link:hover,
.social-link:focus {
  color: var(--accent-primary);
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.social-link svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
}

.social-link:hover svg {
  transform: scale(1.15);
}

/* Collapsed mode (desktop icon-only) */
.sidebar.collapsed .social-links {
  flex-direction: column;
  gap: 16px;
  align-items: center;
}

.sidebar.collapsed .social-link {
  width: 40px;
  height: 40px;
  background: rgba(59, 130, 246, 0.08);
}

.sidebar.collapsed .social-link svg {
  width: 18px;
  height: 18px;
}

/* Mobile adjustments */
@media (max-width: 1024px) {
  .sidebar-footer {
    padding-top: 24px;
    padding-bottom: 32px;
  }

  .social-links {
    gap: 16px;
  }

  .social-link {
    width: 48px;
    height: 48px;
  }

  .social-link svg {
    width: 22px;
    height: 22px;
  }
}

@media (max-width: 480px) {
  .social-links {
    gap: 14px;
  }

  .social-link {
    width: 44px;
    height: 44px;
  }

  .social-link svg {
    width: 20px;
    height: 20px;
  }
}

/* ============================================
   Main Content
   ============================================ */
.main {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  transition: margin-left var(--transition-base);
}

.sidebar.collapsed ~ .main {
  margin-left: var(--sidebar-collapsed-width);
}

/* ============================================
   Sections Common Styles with Dividers
   ============================================ */
.section {
  padding: var(--section-padding) var(--container-padding);
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

/* Section Divider */
.section::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: var(--container-padding);
  right: var(--container-padding);
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--section-border) 20%,
    var(--accent-primary) 50%,
    var(--section-border) 80%,
    transparent 100%
  );
}

.section:last-of-type::after {
  display: none;
}

.section-header {
  margin-bottom: 60px;
  max-width: 600px;
}

.section-tag {
  display: inline-block;
  padding: 10px 20px;
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-primary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  margin-bottom: 20px;
  border: 1px solid rgba(59, 130, 246, 0.2);
}

.section-title {
  font-family: var(--font-primary);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1.7;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding-top: 60px;
  padding-bottom: 60px;
}

.hero::after {
  display: none;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero-greeting {
  color: var(--accent-primary);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.hero-name {
  font-family: var(--font-primary);
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -2px;
  margin-bottom: 16px;
}

.hero-title {
  font-family: var(--font-primary);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.title-word.highlight {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 600;
}

.hero-description {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 500px;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.5);
}

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

.btn-outline:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: rgba(59, 130, 246, 0.05);
}

/* Hero Visual */
.hero-visual {
  position: relative;
}

.hero-image-wrapper {
  position: relative;
  width: 360px;
  height: 360px;
  margin: 0 auto;
}

.hero-image-glow {
  position: absolute;
  inset: -30px;
  background: var(--accent-gradient);
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  animation: glow-pulse 4s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%,
  100% {
    opacity: 0.5;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.08);
  }
}

.hero-image {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid var(--accent-primary);
  z-index: 1;
  box-shadow: var(--shadow-glow);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.stat-item {
  text-align: center;
  padding: 24px 16px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.stat-item:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow-sm);
}

.stat-number {
  display: block;
  font-family: var(--font-primary);
  font-size: 36px;
  font-weight: 700;
  color: var(--accent-primary);
  margin-bottom: 4px;
}

.stat-number::after {
  content: "+";
}

.stat-label {
  font-size: 12px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0.75;
}

.scroll-text {
  font-size: 14px;
  color: white;
  letter-spacing: 1px;
}

.scroll-arrow {
  width: 24px;
  height: 40px;
  animation: arrow-bounce 1.6s infinite ease-in-out;
}

@keyframes arrow-bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(8px);
  }
  60% {
    transform: translateY(4px);
  }
}

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

.scroll-text {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--text-tertiary);
}

.scroll-line {
  width: 2px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent-primary), transparent);
  border-radius: 2px;
}

/* ============================================
   About Section
   ============================================ */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}

.about-text {
  max-width: 520px;
}

.about-intro {
  font-size: 20px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}

.skills-heading {
  font-family: var(--font-primary);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 24px;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.skill-card {
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.skill-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow-sm);
}

.skill-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.15);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
}

.skill-icon img {
  filter: brightness(0) saturate(100%) invert(46%) sepia(85%) saturate(1959%)
    hue-rotate(200deg) brightness(101%) contrast(96%);
}

[data-theme="light"] .skill-icon img {
  filter: brightness(0) saturate(100%) invert(35%) sepia(98%) saturate(1589%)
    hue-rotate(206deg) brightness(96%) contrast(94%);
}

.skill-name {
  font-weight: 600;
  font-size: 16px;
  margin-bottom: 6px;
}

.skill-desc {
  font-size: 14px;
  color: var(--text-tertiary);
}

.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tech-tag {
  padding: 10px 18px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  border: 1px solid transparent;
}

.tech-tag:hover {
  background: var(--accent-primary);
  color: white;
  border-color: var(--accent-primary);
  transform: translateY(-2px);
}

/* ============================================
   Experience Section
   ============================================ */
.experience-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 60px;
}

.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(
    to bottom,
    var(--accent-primary),
    var(--border-color)
  );
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  padding-bottom: 40px;
}

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

.timeline-marker {
  position: absolute;
  left: -37px;
  top: 8px;
  width: 12px;
  height: 12px;
  background: var(--bg-primary);
  border: 3px solid var(--accent-primary);
  border-radius: 50%;
  transition: all var(--transition-base);
}

.timeline-item:hover .timeline-marker {
  background: var(--accent-primary);
  box-shadow: 0 0 20px var(--accent-primary);
}

.timeline-content {
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.timeline-item:hover .timeline-content {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  box-shadow: var(--shadow-glow-sm);
}

.timeline-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.timeline-title {
  font-family: var(--font-primary);
  font-size: 18px;
  font-weight: 600;
}

.timeline-company {
  color: var(--accent-primary);
  font-size: 14px;
  font-weight: 600;
}

.timeline-date {
  display: block;
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}

.timeline-desc {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.timeline-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.timeline-tags span {
  padding: 6px 14px;
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-secondary);
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-full);
}

/* Education & Gallery Column */
.experience-side {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.education-title,
.gallery-title {
  font-family: var(--font-primary);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.education-title::before,
.gallery-title::before {
  content: "";
  width: 4px;
  height: 24px;
  background: var(--accent-gradient);
  border-radius: 4px;
}

.education-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  transition: all var(--transition-base);
}

.education-item:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  transform: translateX(4px);
}

.education-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.15);
  border-radius: var(--radius-md);
  color: var(--accent-primary);
  flex-shrink: 0;
}

.education-content {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.education-content h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

.education-content span {
  font-size: 12.5px;
  color: var(--text-tertiary);
  letter-spacing: 0.2px;
}

.education-degree {
  margin-top: 6px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-secondary);
  line-height: 1.5;
}

.education-desc {
  margin-top: 4px;
  font-size: 13px;
  color: var(--text-tertiary);
  line-height: 1.6;
  max-width: 720px;
}

.education-item:hover .education-content h4 {
  color: var(--accent-primary);
}

@media (max-width: 640px) {
  .education-item {
    padding: 16px;
    gap: 12px;
  }

  .education-desc {
    font-size: 12.5px;
  }
}


/* Photo Gallery */
.photo-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.gallery-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery-item:hover img {
  transform: scale(1.1);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(3, 7, 18, 0.9) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: 12px;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

.gallery-caption {
  color: white;
  font-size: 12px;
  font-weight: 500;
}

/* Large gallery item */
.gallery-item.large {
  grid-column: span 2;
  aspect-ratio: 2/1;
}

/* ============================================
   Projects Section
   ============================================ */
.projects-filter {
  display: flex;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 12px 24px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  border: 1px solid transparent;
}

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

.filter-btn.active {
  background: var(--accent-gradient);
  color: white;
  box-shadow: var(--shadow-glow-sm);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.project-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  transform: translateY(-8px);
  box-shadow: var(--shadow-glow-sm);
}

.project-card.hidden {
  display: none;
}

.project-image {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
  transform: scale(1.1);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(3, 7, 18, 0.9) 0%,
    rgba(59, 130, 246, 0.2) 100%
  );
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

.project-link {
  width: 56px;
  height: 56px;
  background: var(--accent-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transform: scale(0.8);
  transition: transform var(--transition-base);
  box-shadow: var(--shadow-glow-sm);
}

.project-card:hover .project-link {
  transform: scale(1);
}

.project-content {
  padding: 24px;
}

.project-category {
  display: inline-block;
  font-size: 11px;
  color: var(--accent-primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.project-title {
  font-family: var(--font-primary);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
}

.project-desc {
  font-size: 14px;
  color: var(--text-tertiary);
  line-height: 1.6;
}

/* ============================================
   Demo Section
   ============================================ */
.demo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.demo-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.demo-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow-sm);
}

.demo-video {
  position: relative;
  aspect-ratio: 16/9;
  background: var(--bg-tertiary);
}

.demo-video iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.demo-content {
  padding: 24px;
}

.demo-category {
  display: inline-block;
  font-size: 11px;
  color: var(--accent-primary);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.demo-title {
  font-family: var(--font-primary);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.demo-desc {
  font-size: 14px;
  color: var(--text-tertiary);
  line-height: 1.6;
}

/* ============================================
   Contact Section
   ============================================ */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
}

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

.contact-card {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.contact-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  transform: translateX(4px);
}

.contact-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.15);
  border-radius: var(--radius-md);
  color: var(--accent-primary);
  flex-shrink: 0;
}

.contact-details h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
}

.contact-details a,
.contact-details span {
  color: var(--text-secondary);
  font-size: 15px;
  transition: color var(--transition-fast);
}

.contact-details a:hover {
  color: var(--accent-primary);
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input {
  padding: 16px 20px;
  background: var(--bg-tertiary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 15px;
  color: var(--text-primary);
  transition: all var(--transition-base);
}

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

.form-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
}

.btn-submit {
  align-self: flex-start;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: 40px var(--container-padding);
  border-top: 1px solid var(--section-border);
  margin-top: 60px;
}

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

.footer-text {
  color: var(--text-secondary);
  font-size: 14px;
}

.footer-copyright {
  color: var(--text-tertiary);
  font-size: 14px;
}

/* ============================================
   Responsive Design - Improved
   ============================================ */
@media (max-width: 1200px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-content {
    gap: 60px;
  }

  .hero-image-wrapper {
    width: 300px;
    height: 300px;
  }

  .experience-content {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

@media (max-width: 1024px) {
  :root {
    --sidebar-width: 0;
    --section-padding: 80px;
    --container-padding: 32px;
  }

  .mobile-nav-toggle {
    display: flex;
  }

  .sidebar {
    transform: translateX(-100%);
    width: 280px;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
  }

  .sidebar.active {
    transform: translateX(0);
  }

  .main {
    margin-left: 0;
  }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

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

  .hero-actions {
    justify-content: center;
  }

  .hero-title {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-text {
    max-width: none;
  }

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

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

  .footer-content {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .photo-gallery {
    grid-template-columns: repeat(3, 1fr);
  }

  .gallery-item.large {
    grid-column: span 1;
    aspect-ratio: 1;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 60px;
    --container-padding: 24px;
  }

  .hero {
    min-height: auto;
    padding-top: 100px;
  }

  .hero-image-wrapper {
    width: 240px;
    height: 240px;
  }

  .hero-stats {
    gap: 12px;
  }

  .stat-item {
    padding: 16px 12px;
  }

  .stat-number {
    font-size: 28px;
  }

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

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

  .scroll-indicator {
    display: none;
  }

  .theme-toggle {
    bottom: 20px;
    right: 20px;
    width: 52px;
    height: 52px;
  }

  .photo-gallery {
    grid-template-columns: repeat(2, 1fr);
  }

  .section::after {
    left: var(--container-padding);
    right: var(--container-padding);
  }
}

@media (max-width: 480px) {
  :root {
    --container-padding: 20px;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 12px;
  }

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

  .btn {
    width: 100%;
    justify-content: center;
  }

  .projects-filter {
    justify-content: center;
  }

  .filter-btn {
    padding: 10px 18px;
    font-size: 13px;
  }

  .timeline {
    padding-left: 24px;
  }

  .timeline-marker {
    left: -29px;
  }

  .mobile-nav-toggle {
    top: 16px;
    left: 16px;
    width: 48px;
    height: 48px;
  }

  .photo-gallery {
    gap: 8px;
  }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.section {
  animation: fadeInUp 0.8s ease forwards;
}

/* Overlay for mobile navigation */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(3, 7, 18, 0.8);
  backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 999;
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Selection */
::selection {
  background: var(--accent-primary);
  color: white;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 5px;
  border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-primary);
}

/* ============================================
   Welcome Modal
   ============================================ */

.welcome-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.7s ease;
}
.welcome-modal.active {
  opacity: 1;
  visibility: visible;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(3, 7, 18, 0.97) 0%,
    rgba(15, 23, 42, 0.95) 100%
  );
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.modal-content {
  position: relative;
  width: 90%;
  max-width: 780px;
  background: var(--bg-secondary);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: 28px;
  overflow: hidden;
  box-shadow:
    0 40px 100px rgba(0, 0, 0, 0.6),
    0 0 100px rgba(59, 130, 246, 0.4);
  transform: translateY(40px) scale(0.95);
  transition: all 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.welcome-modal.active .modal-content {
  transform: translateY(0) scale(1);
}

.modal-glow {
  position: absolute;
  inset: -50%;
  background: radial-gradient(
    circle at 30% 20%,
    rgba(59, 130, 246, 0.6) 0%,
    transparent 60%
  );
  opacity: 0.5;
  filter: blur(80px);
  animation: subtlePulse 10s ease-in-out infinite;
}

.modal-body {
  display: flex;
  align-items: center;
  padding: 60px 48px;
  gap: 64px;
  position: relative;
  z-index: 2;
}

.modal-profile-left {
  flex: 0 0 220px;
  text-align: center;
}

.modal-avatar {
  position: relative;
  width: 180px;
  height: 180px;
  margin: 0 auto 20px;
}
.modal-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  border: 5px solid rgba(59, 130, 246, 0.5);
  box-shadow: 0 16px 60px rgba(59, 130, 246, 0.55);
}
.avatar-ring {
  position: absolute;
  inset: -14px;
  border: 2px solid var(--accent-primary);
  border-radius: 50%;
  opacity: 0.65;
  animation: ringRotate 14s linear infinite;
}

.profile-name {
  font-size: 28px;
  font-weight: 800;
  color: white;
  margin-bottom: 6px;
  letter-spacing: -0.5px;
}
.profile-role {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-secondary);
  opacity: 0.9;
}

.modal-content-right {
  flex: 1;
  text-align: left;
}

.modal-title {
  font-size: clamp(48px, 9vw, 78px);
  font-weight: 900;
  letter-spacing: -2.5px;
  line-height: 0.92;
  margin-bottom: 12px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  padding-bottom: 12px;
}

.modal-subtitle {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 28px;
  opacity: 0.96;
}

.modal-desc {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 480px;
}

.modal-btn {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 18px 56px;
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
  font-size: 17px;
  font-weight: 700;
  border: none;
  border-radius: 60px;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 0 12px 40px rgba(59, 130, 246, 0.55);
}

.modal-btn:hover {
  transform: translateY(-8px) scale(1.08);
  box-shadow: 0 30px 70px rgba(59, 130, 246, 0.8);
}

.modal-hint {
  margin-top: 28px;
  font-size: 14px;
  color: var(--text-tertiary);
  opacity: 0.75;
}

/* Responsive - lebih compact di HP */
@media (max-width: 768px) {
  .modal-content {
    max-width: 90%;
    padding: 20px;
  }

  .modal-body {
    flex-direction: column;
    gap: 32px;
    padding: 32px 24px;
    text-align: center;
  }

  .modal-profile-left {
    flex: none;
  }

  .modal-avatar {
    width: 120px;
    height: 120px;
    margin-bottom: 16px;
  }

  .avatar-ring {
    inset: -10px;
  }

  .profile-name {
    font-size: 22px;
    margin-bottom: 4px;
  }

  .profile-role {
    font-size: 14px;
  }

  .modal-content-right {
    text-align: center;
  }

  .modal-title {
    font-size: clamp(32px, 8vw, 48px);
    margin-bottom: 8px;
    line-height: 1.1;
  }

  .modal-subtitle {
    font-size: 18px;
    margin-bottom: 20px;
  }

  .modal-desc {
    font-size: 15px;
    line-height: 1.5;
    margin-bottom: 28px;
    max-width: 100%;
  }

  .modal-btn {
    width: 100%;
    max-width: 320px;
    padding: 14px 0;
    font-size: 16px;
    justify-content: center;
  }

  .modal-hint {
    margin-top: 20px;
    font-size: 13px;
  }

  .modal-glow {
    inset: -70%;
    filter: blur(60px);
  }
}

/* Language Switcher */
.lang-switcher {
  margin-top: 1rem;
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-direction: row;
}

/* If sidebar is collapsed, stack vertically */
.sidebar.collapsed .lang-switcher {
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

@media (max-width: 1024px) {
  .sidebar:not(.active) .lang-switcher,
  .sidebar.collapsed .lang-switcher {
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
  }
}

.lang-btn {
  padding: 0.5rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  font-weight: 500;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.lang-btn.active {
  background: var(--accent-gradient);
  color: white;
  border-color: var(--accent-primary);
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.15);
}

.lang-btn:hover,
.lang-btn:focus {
  background: var(--bg-card-hover);
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  opacity: 1;
}