:root {
  /* Base Colors */
  --bg: #121212;
  --panel: #1c1c1c;
  --muted: #b0b0b0;
  --text: #f5f5f5;

  /* Accent Colors */
  --accent: #00ffc8;
  --accent-2: #56e39f;

  /* State Colors */
  --success: #34d399;
  --danger: #fb7185;
  --warning: #fbbf24;

  /* UI Elements */
  --card-bg: rgba(28, 28, 28, 0.7);
  --glass: rgba(255, 255, 255, 0.06);

  /* Shadow & Border */
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  --border: 1px solid rgba(255, 255, 255, 0.08);

  /* Radius & Layout */
  --radius: 12px;
  --maxWidth: 1100px;
  --spacing: 1rem;

  /* Typography */
  --font-size: 16px;
  --line-height: 1.6;

  /* Transitions */
  --transition-speed: 0.3s;
  --transition-ease: cubic-bezier(0.4, 0, 0.2, 1);
}

:root.light {
  --bg: #ffffff;
  --panel: #f5f5f5;
  --muted: #6b7380;
  --text: #0b1220;

  --accent: #0ea5e9;
  --accent-2: #3b82f6;

  --card-bg: rgba(245, 245, 245, 0.85);
  --glass: rgba(0, 0, 0, 0.03);

  --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  --border: 1px solid rgba(0, 0, 0, 0.05);
}

/* --- Auto Theme (System Preference) --- */
@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --panel: #f5f5f5;
    --muted: #6b7380;
    --text: #0b1220;

    --accent: #0ea5e9;
    --accent-2: #3b82f6;

    --card-bg: rgba(245, 245, 245, 0.85);
    --glass: rgba(0, 0, 0, 0.03);

    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --border: 1px solid rgba(0, 0, 0, 0.05);
  }
}

/* --- Smooth Transition for Theme Switching --- */
* {
  transition: 
    background-color var(--transition-speed) var(--transition-ease),
    color var(--transition-speed) var(--transition-ease),
    border-color var(--transition-speed) var(--transition-ease),
    box-shadow var(--transition-speed) var(--transition-ease);
}
    /* --- Global Styles & Layout (Simplified & Improved) --- */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  height: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  height: 100%;
  font-family: Inter, Poppins, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6; /* readability */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background var(--transition-speed) ease,
              color var(--transition-speed) ease;
}

.container {
  max-width: var(--maxWidth);
  width: 94%;
  margin-inline: auto; /* shorthand modern margin auto (L&R) */
}

h1, h2, h3, h4, h5 {
  margin: 0;
  line-height: 1.2;
}

p {
  margin: 0 0 1rem;
}

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

a:focus-visible { /* lebih aksesibel daripada :focus */
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

    /* --- Helper Classes --- */
    .muted{color:var(--muted)}
    .small{font-size:.9rem}
    .text-center { text-align: center; }
    .reveal{opacity:0;transform:translateY(10px);transition:all .7s cubic-bezier(.2,.9,.3,1)}
    .reveal.show{opacity:1;transform:none}
    .gradient-text {
      background:linear-gradient(90deg,var(--accent),var(--accent-2));
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }
    .sr-only {
      position: absolute;
      width: 1px;
      height: 1px;
      padding: 0;
      margin: -1px;
      overflow: hidden;
      clip: rect(0, 0, 0, 0);
      white-space: nowrap;
      border-width: 0;
    }
    
/* === Navbar (Mobile) === */
header.nav {
  position: sticky;
  top: 8px;
  z-index: 100;
  margin: 10px auto 0;
  background: var(--panel);
  border-radius: var(--radius);
  padding: 8px 12px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid var(--glass);
}

/* Susunan vertikal agar muat di layar HP */
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand img {
  height: 40px;
  width: 40px;
  border-radius: 8px;
  object-fit: cover;
}

.brand h1 {
  font-size: 0.95rem;
  margin: 0;
  font-weight: 700;
  letter-spacing: 0.15px;
}

/* === NAVBAR DESKTOP FINAL (brand & tombol fix, nav scroll halus, fade rapi) === */
@media (min-width: 768px) {
  header.nav {
    position: sticky;
    top: 12px;
    z-index: 100;
    margin: 12px auto 0;
    background: var(--panel);
    border-radius: var(--radius);
    padding: 14px 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--glass);
    max-width: 1280px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    overflow: hidden; /* tutup area scroll agar fade rapi */
    position: relative;
  }

  .nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 1rem;
  }

  /* --- Brand (fix di kiri, tidak ikut scroll) --- */
  .brand {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    z-index: 10;
    position: relative;
  }

  .brand img {
    height: 48px;
    width: 48px;
    border-radius: 8px;
    object-fit: cover;
  }

  .brand h1 {
    font-size: 1.05rem;
    margin: 0;
    font-weight: 700;
    line-height: 1.1;
  }

  .brand .small {
    font-size: 0.88rem;
    opacity: 0.85;
  }

  /* --- Navigasi scrollable tengah --- */
  nav.primary-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-grow: 1;
    overflow-x: auto;
    scroll-behavior: smooth;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    position: relative;
    scroll-snap-type: x proximity;
    padding: 0 21px; /* beri ruang dalam agar tombol pertama/terakhir tidak mentok */
  }

  nav.primary-nav::-webkit-scrollbar {
    display: none;
  }

  nav.primary-nav a {
    flex-shrink: 0;
    padding: 10px 14px;
    border-radius: 8px;
    font-weight: 600;
    opacity: 0.85;
    text-decoration: none;
    transition: background 0.25s, color 0.25s, transform 0.2s;
  }

  nav.primary-nav a:hover,
  nav.primary-nav a:focus {
    background: var(--accent);
    color: #001018;
    opacity: 1;
    transform: translateY(-2px);
  }

  /* --- Tombol kanan (fix di kanan, tak bergeser) --- */
  .nav-buttons {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    flex-shrink: 0;
    z-index: 10;
    position: relative;
  }

  .cta-btn {
    background: var(--accent);
    color: #001018;
    font-weight: 700;
    padding: 8px 14px;
    border-radius: 8px;
    transition: transform 0.2s, box-shadow 0.2s;
  }

  .cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
  }

  .theme-toggle {
    background: none;
    border: 1px solid var(--glass);
    border-radius: 8px;
    padding: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text);
    flex-shrink: 0;
  }

  .theme-toggle:hover {
    background: var(--accent);
    color: #001018;
  }

  /* --- Efek gradasi sisi kiri & kanan agar tombol tampak tersembunyi --- */
  header.nav::before,
  header.nav::after {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    width: 60px;
    pointer-events: none;
    z-index: 9;
  }

  header.nav::before {
    left: 0;
    background: linear-gradient(to right, var(--panel) 40%, transparent);
  }

  header.nav::after {
    right: 0;
    background: linear-gradient(to left, var(--panel) 40%, transparent);
  }
}

    /* Hamburger Button */
    button.mobile-nav-toggle {
      background: var(--panel);
      border: none;
      padding: 10px;
      border-radius: 8px;
      cursor: pointer;
      display: none; /* Hidden by default, shown on mobile */
      transition: background var(--transition-speed) ease;
    }
    button.mobile-nav-toggle:hover,
    button.mobile-nav-toggle:focus {
      background: var(--accent);
      outline: none;
    }
    button.mobile-nav-toggle svg {
      width: 28px;
      height: 28px;
      color: var(--text);
    }

    /* Mobile Menu Overlay */
    .mobile-menu-overlay {
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.6);
      opacity: 0;
      pointer-events: none;
      transition: opacity var(--transition-speed) ease;
      z-index: 90;
    }
    .mobile-menu-overlay.show {
      opacity: 1;
      pointer-events: auto;
    }

    /* Mobile Menu Panel */
    nav.mobile-menu {
      position: fixed;
      top: 0;
      right: -320px; /* Hidden by default */
      width: 280px;
      height: 100vh;
      background: var(--panel);
      box-shadow: -5px 0 15px rgba(0, 0, 0, 0.3);
      padding: 20px;
      display: flex;
      flex-direction: column;
      gap: 18px;
      z-index: 9999;
      transition: right var(--transition-speed) ease;
      overflow-y: auto;
    }
    nav.mobile-menu.show {
      right: 0;
    }
    nav.mobile-menu a {
      color: var(--text);
      font-weight: 600;
      padding: 12px 0;
      border-bottom: 1px solid var(--glass);
      transition: color var(--transition-speed) ease;
    }
    nav.mobile-menu a:last-child {
      border-bottom: none;
    }
    nav.mobile-menu a:hover,
    nav.mobile-menu a:focus {
      color: var(--accent);
      outline: none;
    }
    nav.mobile-menu .close-btn {
      align-self: flex-end;
      background: none;
      border: none;
      color: var(--text);
      font-size: 28px;
      cursor: pointer;
      padding: 0;
      margin-bottom: 10px;
      transition: color var(--transition-speed) ease;
    }
    nav.mobile-menu .close-btn:hover,
    nav.mobile-menu .close-btn:focus {
      color: var(--accent);
      outline: none;
    }
    
    /* --- CTA Buttons --- */
    .cta-btn{
      background:linear-gradient(90deg,var(--accent),var(--accent-2));
      padding:.55rem .9rem;
      border-radius:12px;
      color:#001018;
      font-weight:800;
      border:none;
      cursor:pointer;
      box-shadow:0 4px 10px rgba(0,0,0,0.1);
      transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    }
    .cta-btn:hover {
        transform: translateY(-2px);
        box-shadow:0 6px 15px rgba(0,0,0,0.2);
    }
    .sub-cta-btn {
        background: var(--panel);
        color: var(--text);
        border: 1px solid var(--muted);
        padding: .55rem .9rem;
        border-radius: 12px;
        font-weight: 600;
        cursor: pointer;
        font-size: 0.90rem;
        transition: transform var(--transition-speed), border-color var(--transition-speed), background var(--transition-speed);
    }
    .sub-cta-btn:hover {
        transform: translateY(-2px);
        border-color: var(--accent);
        background: var(--glass);
    }
      .sub-cta-btn-survey {
        background: var(--panel);
        color: var(--text);
        border: 1px solid var(--muted);
        padding: .55rem .9rem;
        border-radius: 12px;
        font-weight: 600;
        cursor: pointer;
        font-size: 0.71rem;
        transition: transform var(--transition-speed), border-color var(--transition-speed), background var(--transition-speed);
    }
    .sub-cta-btn-survey:hover {
        transform: translateY(-2px);
        border-color: var(--accent);
        background: var(--glass);
    }
    .mini{
      font-size:.9rem;
      padding:.4rem .6rem;
      border-radius:8px;
      background:transparent;
      border:1px solid var(--muted);
    }
    .wa-btn{
      background:linear-gradient(90deg,var(--accent),var(--accent-2));
      color:#001018;
      padding:.65rem .9rem;
      border-radius:12px;
      border:none;
      font-weight:800;
      cursor:pointer;
      transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    }
    .wa-btn:hover {
        transform: translateY(-2px);
        box-shadow:0 6px 15px rgba(0,0,0,0.2);
    }
    
    /* --- Sections --- */
    .section{
      padding:42px 0;
    }
    .section-header {
      display:flex;justify-content:space-between;align-items:center;
      margin-bottom: 12px;
      flex-wrap: wrap;
    }
    h2{
      margin:0;
      font-size: clamp(1.8rem, 3.5vw, 2.5rem);
      font-weight: 700;
    }

    /* --- Hero Section --- */
    .hero{
      display:grid;grid-template-columns:1fr 420px;gap:28px;align-items:center;padding:48px 0;
    }
    .hero .left h2{
      font-size:clamp(2rem,4vw,3rem);margin:0 0 .6rem;line-height:1.02;
    }
    .tag{
      display:inline-flex;align-items:center;gap:.6rem;padding:.4rem .7rem;border-radius:999px;
      background:linear-gradient(90deg, rgba(34,211,238,0.08), rgba(96,165,250,0.06));
      color:var(--accent);font-weight:700;margin-bottom:12px;
      border: 1px solid rgba(34,211,238,0.2);
    }
    .lead{
      color:var(--muted);font-size:1.05rem;margin-bottom:16px;
    }
    .action-buttons {
      display:flex;gap:10px;align-items:center;flex-wrap: wrap;
    }
    .social-links-hero {
      display: flex;
      gap: 1.5rem;
      margin-top: 20px;
      margin-bottom: 25px;
    }
    .social-links-hero img {
      width: 28px;
      height: 28px;
      transition: transform var(--transition-speed) ease;
    }
    .social-links-hero a:hover img {
      transform: scale(1.1);
    }
    .hero-card{
      background:var(--panel);
      padding:18px;border-radius:var(--radius);border:1px solid var(--glass);
    }
    .hero-card h3{margin:0 0 .4rem; font-size: 1.2rem;}
    .price{
      font-weight:800;font-size:1.5rem;color:var(--accent);
    }
    .hero-cta{
      display:flex;gap:10px;margin-top:12px;flex-wrap:wrap;
    }
    
    /* --- Services & Pricing Cards --- */
    .cards{
      display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px;
    }
    .card{
      padding:18px;
      border-radius:var(--radius);
      background:var(--panel);
      border:1px solid var(--glass);
      transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
    }
    .card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    }
    .card h4{margin:0 0 .4rem; font-size: 1.1rem;}

    /* --- Software Tools Section --- */
    .tools-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 14px;
      margin-top: 18px;
    }
    .tool-card {
      padding: 18px;
      border-radius: var(--radius);
      background: var(--panel);
      border: 1px solid var(--glass);
      text-align: center;
      transition: transform var(--transition-speed) ease, border-color var(--transition-speed) ease, background var(--transition-speed) ease;
      position: relative;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }
    .tool-card:hover {
      transform: translateY(-5px);
      border-color: var(--accent);
    }
    .tool-card.mastered {
      border-color: var(--success);
      background: linear-gradient(135deg, var(--panel), rgba(52, 211, 153, 0.05));
    }
    .tool-card.learning {
      border-color: var(--warning);
      background: linear-gradient(135deg, var(--panel), rgba(251, 191, 36, 0.05));
    }
    .tool-card img {
      width: 50px;
      height: 50px;
      object-fit: contain;
      margin-bottom: 10px;
      border-radius: 8px;
    }
    .tool-card h4 {
      margin: 0 0 .4rem;
      font-size: 0.9rem;
      font-weight: 600;
    }
    .tool-status {
      position: absolute;
      top: 8px;
      right: 8px;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--muted);
    }
    .tool-card.mastered .tool-status {
      background: var(--success);
    }
    .tool-card.learning .tool-status {
      background: var(--warning);
    }
    .tool-progress {
        width: 100%;
        height: 4px;
        background: var(--glass);
        border-radius: 2px;
        margin-top: 8px;
        overflow: hidden;
    }
    .tool-progress-bar {
        height: 100%;
        background: linear-gradient(90deg, var(--accent), var(--accent-2));
        width: 0%; /* Controlled by JS */
        transition: width 0.5s ease-out;
    }

    /* --- Testimonials --- */
    .testimonials {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 14px;
      margin-top: 18px;
    }
    .testimonial-card {
      padding: 18px;
      border-radius: var(--radius);
      background: var(--panel);
      border: 1px solid var(--glass);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
    }
    .testimonial-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    }
    .testimonial-card blockquote {
      margin: 0;
      font-style: italic;
      font-size: 1rem;
      color: var(--text);
      flex-grow: 1;
    }
    .testimonial-card .author {
      font-weight: 700;
      margin-top: 15px;
      font-size: 0.95rem;
      color: var(--accent);
    }
    .testimonial-card .rating {
        color: #FFD700; /* Gold color for stars */
        margin-bottom: 8px;
    }
    
    /* --- Portfolio --- */
    .filter-buttons {
      display: flex;
      gap: 10px;
      margin-bottom: 18px;
      flex-wrap: wrap;
    }
    .filter-btn {
      background: var(--panel);
      color: var(--text);
      border: 1px solid var(--muted);
      padding: .5rem .9rem;
      border-radius: 8px;
      cursor: pointer;
      transition: background var(--transition-speed), border-color var(--transition-speed), color var(--transition-speed);
    }
    .filter-btn.active, .filter-btn:hover {
      background: var(--accent);
      border-color: var(--accent);
      color: #001018;
    }
    .grid-portfolio{
      display:grid;grid-template-columns:repeat(3,1fr);gap:14px;
    }
    .item{
      border-radius:var(--radius);overflow:hidden;position:relative;border:1px solid var(--glass);cursor:pointer;
      display: block;
      transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
    }
    .item:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    }
    .item.hide {
      display: none;
    }
    .item img{
      width:100%;height:220px;object-fit:cover;display:block;transform:scale(1);transition:transform .45s cubic-bezier(.2,.9,.3,1);
    }
    .item:hover img{
      transform:scale(1.06);
    }
    .item .meta{
      position:absolute;left:12px;bottom:12px;
      background:var(--card-bg); /* Use card-bg for glass effect */
      backdrop-filter: blur(5px);
      -webkit-backdrop-filter: blur(5px);
      padding:8px 12px;border-radius:8px;font-weight:700;
      color: var(--text);
    }
    
    /* --- Credibility Section --- */
    .credibility-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 14px;
      margin-top: 18px;
    }
    .credibility-card {
      border-radius: var(--radius);
      overflow: hidden;
      background: var(--panel);
      border: 1px solid var(--glass);
      cursor: pointer;
      transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
    }
    .credibility-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    }
    .credibility-card img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      display: block;
    }
    .credibility-card .content {
      padding: 18px;
    }
    .credibility-card .content h4 {
      margin-bottom: 8px;
      font-size: 1.1rem;
    }
    .credibility-card .content .type {
      font-size: 0.8rem;
      color: var(--accent);
      font-weight: 600;
      margin-bottom: 4px;
      text-transform: uppercase;
    }

    /* --- Partnerships Section --- */
    .partnerships-container {
      overflow: hidden;
      white-space: nowrap;
      margin-top: 20px;
      padding: 15px 0;
      background: var(--panel);
      border-radius: var(--radius);
      border: 1px solid var(--glass);
      box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    }

    .partnerships-track {
      display: inline-block;
      animation: scrollPartners 30s linear infinite;
    }

    .partnerships-track:hover {
      animation-play-state: paused;
    }
.partner-logo {
  display: inline-block;
  width: 100px;         /* Ukuran logo kamu minta */
  height: auto;         /* Menjaga rasio agar tidak melar */
  margin: 0 20px;
  vertical-align: middle;
  object-fit: contain;

  /* Logo langsung berwarna */
  filter: none;
  opacity: 1;

  /* Animasi tetap hidup */
  transition: transform 0.24s ease, opacity 0.24s ease, filter 0.24s ease;
}

.partner-logo:hover {
  transform: translateY(-4px);
  opacity: 1;
  filter: none;
}

    @keyframes scrollPartners {
      0% { transform: translateX(0%); }
      100% { transform: translateX(-50%); } /* Scrolls half the width of the duplicated content */
    }

    /* --- FAQ --- */
    .faq-list {
      margin-top: 18px;
      display: grid;
      gap: 10px;
    }
    details {
      background: var(--panel);
      border: 1px solid var(--glass);
      border-radius: var(--radius);
      padding: 15px;
      transition: background var(--transition-speed) ease, border-color var(--transition-speed) ease;
    }
    details[open] {
        background: var(--glass);
        border-color: var(--accent);
    }
    summary {
      font-weight: 700;
      cursor: pointer;
      list-style: none;
      position: relative;
      padding-right: 30px; /* Space for icon */
    }
    summary::-webkit-details-marker { display: none; } /* Hide default marker */
    summary::marker { display: none; } /* Hide default marker */

    summary::after {
      content: '\2b'; /* Plus sign */
      position: absolute;
      right: 0;
      top: 50%;
      transform: translateY(-50%);
      font-size: 1.2rem;
      transition: transform var(--transition-speed) ease;
      color: var(--accent);
    }
    details[open] summary::after {
      content: '\2212'; /* Minus sign */
      transform: translateY(-50%) rotate(180deg);
    }
    details p {
      margin-top: 10px;
      padding-top: 10px;
      border-top: 1px solid var(--glass);
      color: var(--muted);
    }

    /* --- Enhanced AI Assistant --- */
    .ai-assistant {
      background: linear-gradient(135deg, var(--panel), rgba(0, 255, 200, 0.05));
      border: 2px solid var(--accent);
      border-radius: var(--radius);
      padding: 20px;
      margin-top: 20px;
      position: relative;
      overflow: hidden;
    }
    .ai-assistant::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 2px;
      background: linear-gradient(90deg, var(--accent), var(--accent-2));
      animation: pulse 2s ease-in-out infinite;
    }
    @keyframes pulse {
      0%, 100% { opacity: 0.5; }
      50% { opacity: 1; }
    }
    .ai-header {
      display: flex;
      align-items: center;
      gap: 15px;
      margin-bottom: 20px;
    }
    .ai-avatar {
      width: 50px;
      height: 50px;
      background: linear-gradient(135deg, var(--accent), var(--accent-2));
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #001018;
      font-weight: 800;
      font-size: 1.2rem;
      position: relative;
    }
    .ai-avatar::after {
      content: '';
      position: absolute;
      inset: -3px;
      border-radius: 50%;
      background: linear-gradient(45deg, var(--accent), var(--accent-2));
      z-index: -1;
      animation: rotate 3s linear infinite;
    }
    @keyframes rotate {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }
    .ai-info h4 {
      margin: 0;
      font-size: 1.1rem;
      color: var(--accent);
    }
    .ai-info .status {
      display: flex;
      align-items: center;
      gap: 6px;
      margin-top: 4px;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background: var(--success);
      border-radius: 50%;
      animation: blink 1.5s ease-in-out infinite;
    }
    @keyframes blink {
      0%, 100% { opacity: 1; }
      50% { opacity: 0.3; }
    }
    .chat-interface {
      display: flex;
      gap: 12px;
      margin-top: 20px;
      position: relative;
    }
    .chat-input {
      flex: 1;
      padding: 15px;
      border-radius: 25px;
      border: 2px solid var(--glass);
      background: var(--bg);
      color: var(--text);
      outline: none;
      transition: all var(--transition-speed) ease;
      font-size: 0.95rem;
    }
    .chat-input:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 4px rgba(0, 255, 200, 0.1);
      transform: translateY(-1px);
    }
    .send-chat {
      background: linear-gradient(135deg, var(--accent), var(--accent-2));
      color: #001018;
      border: none;
      padding: 12px 20px;
      border-radius: 25px;
      cursor: pointer;
      font-weight: 700;
      transition: all var(--transition-speed) ease;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .send-chat:hover {
      transform: translateY(-2px);
      box-shadow: 0 5px 15px rgba(0, 255, 200, 0.3);
    }
    .send-chat:disabled {
      opacity: 0.6;
      cursor: not-allowed;
    }
    .quick-questions {
      display: flex;
      gap: 8px;
      margin: 15px 0;
      flex-wrap: wrap;
    }
    .quick-btn {
      background: var(--glass);
      border: 1px solid var(--muted);
      color: var(--text);
      padding: 8px 12px;
      border-radius: 15px;
      font-size: 0.8rem;
      cursor: pointer;
      transition: all var(--transition-speed) ease;
    }
    .quick-btn:hover {
      background: var(--accent);
      color: #001018;
      border-color: var(--accent);
    }
    .chat-messages {
      max-height: 300px;
      overflow-y: auto;
      margin-top: 20px;
      display: none;
      border-top: 1px solid var(--glass);
      padding-top: 15px;
      scrollbar-width: thin;
      scrollbar-color: var(--accent) var(--glass);
    }
    .chat-messages::-webkit-scrollbar {
        width: 8px;
    }
    .chat-messages::-webkit-scrollbar-track {
        background: var(--glass);
        border-radius: 10px;
    }
    .chat-messages::-webkit-scrollbar-thumb {
        background-color: var(--accent);
        border-radius: 10px;
        border: 2px solid var(--glass);
    }
    .chat-message {
      padding: 12px 16px;
      margin-bottom: 12px;
      border-radius: 18px;
      animation: fadeInUp 0.3s ease;
      max-width: 80%;
    }
    @keyframes fadeInUp {
      from {
        opacity: 0;
        transform: translateY(10px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    .chat-message.user {
      background: linear-gradient(135deg, var(--accent), var(--accent-2));
      color: #001018;
      margin-left: auto; /* Align to right */
      border-bottom-right-radius: 5px;
    }
    .chat-message.ai {
      background: var(--panel);
      border: 1px solid var(--glass);
      margin-right: auto; /* Align to left */
      border-bottom-left-radius: 5px;
      position: relative;
    }
    .typing-indicator {
      display: none;
      padding: 12px 16px;
      margin-bottom: 12px;
      border-radius: 18px;
      background: var(--panel);
      border: 1px solid var(--glass);
      margin-right: auto;
      border-bottom-left-radius: 5px;
    }
    .typing-dots {
      display: flex;
      gap: 4px;
    }
    .typing-dots span {
      width: 8px;
      height: 8px;
      background: var(--accent);
      border-radius: 50%;
      animation: typing 1.4s ease-in-out infinite;
    }
    .typing-dots span:nth-child(2) {
      animation-delay: 0.2s;
    }
    .typing-dots span:nth-child(3) {
      animation-delay: 0.4s;
    }
    @keyframes typing {
      0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.4;
      }
      30% {
        transform: translateY(-10px);
        opacity: 1;
      }
    }
    
    /* --- Contact Form --- */
    .form-grid{
      display:grid;grid-template-columns:1fr 360px;gap:16px;margin-top:14px;
    }
    .form-panel{
      background:var(--panel);
      padding:18px;
      border-radius:var(--radius);
      border:1px solid var(--glass);
    }
    form.grid{display:grid;gap:10px}
    label{
      font-size:.9rem;color:var(--muted);display:block;margin-bottom:6px;
    }
    input[type="text"], input[type="tel"], input[type="url"], input[type="email"], textarea, select{
      width:100%;padding:12px;border-radius:8px;border:1px solid var(--glass);background:transparent;color:var(--text);outline:none;
      transition:box-shadow var(--transition-speed) ease,border-color var(--transition-speed) ease,transform var(--transition-speed);
    }
    input:focus, textarea:focus, select:focus{
      box-shadow:0 0 0 2px var(--accent);border-color:var(--accent-2);
    }
    textarea{min-height:120px;resize:vertical}
    .error{
      color:var(--danger);font-size:.85rem;margin-top:6px;display:none;
    }
    .actions{
      display:flex;gap:10px;align-items:center;flex-wrap: wrap;
    }
    .ghost{
      background:transparent;border:1px solid var(--glass);padding:.6rem .9rem;border-radius:8px;cursor:pointer;
      color: var(--text);
      transition: background var(--transition-speed), border-color var(--transition-speed);
    }
    .ghost:hover {
        background: var(--glass);
        border-color: var(--accent);
    }
    .contact-number {
      display:flex;gap:8px;align-items:center;margin-top:8px;
      font-weight:800;
      color: var(--accent);
    }
    .contact-cta {
      margin-top:12px;
    }

    /* --- Payment Methods Section --- */
    .payment-methods {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
      gap: 20px;
      margin-top: 20px;
      text-align: center;
    }
    .payment-card {
      background: var(--panel);
      border: 1px solid var(--glass);
      border-radius: var(--radius);
      padding: 15px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
    }
    .payment-card:hover {
      transform: translateY(-3px);
      box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    }
    .payment-card img {
      width: 80px;
      height: 50px;
      object-fit: contain;
      margin-bottom: 10px;
    }
    .payment-card h5 {
      margin: 0;
      font-size: 1rem;
      color: var(--text);
    }
    .payment-details {
      margin-top: 28px; /* Increased margin */
      padding: 25px; /* Increased padding */
      border-radius: var(--radius);
      background: var(--panel);
      border: 1px solid var(--glass);
    }
    .payment-details p {
      margin-bottom: 8px;
      font-size: 0.95rem;
      color: var(--muted);
    }
    .payment-details strong {
      color: var(--accent);
    }
    .payment-details .qr-code-img {
        max-width: 200px;
        margin: 15px auto;
        display: block;
        border-radius: 8px;
        border: 1px solid var(--glass);
        transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
    }
    .payment-details .qr-code-img:hover {
        transform: scale(1.05);
        box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    }
    .copy-btn {
        background: var(--accent);
        color: #001018;
        border: none;
        padding: 6px 10px;
        border-radius: 6px;
        font-size: 0.8rem;
        cursor: pointer;
        margin-left: 10px;
        transition: background var(--transition-speed), transform var(--transition-speed);
    }
    .copy-btn:hover {
        background: var(--accent-2);
        transform: translateY(-1px);
    }
    
    /* --- Footer --- */
    footer{
      padding:28px 0;border-top:1px solid var(--glass);margin-top:28px;color:var(--muted);
      text-align: center;
    }
    .footer-content{
      display:flex;
      flex-direction: column;
      align-items:center;
      gap:14px;
      flex-wrap:wrap;
    }
    
    /* --- Floating WA --- */
    .float-wa{
      position:fixed;right:18px;bottom:18px;z-index:90;
    }
    .float-wa a{
      display:inline-flex;align-items:center;gap:8px;
      background:linear-gradient(90deg,var(--accent),var(--accent-2));
      color:#001018;padding:.8rem 1rem;border-radius:999px;font-weight:800;
      box-shadow:0 4px 12px rgba(0,0,0,0.1);
      transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    }
    .float-wa a:hover {
        transform: translateY(-2px);
        box-shadow:0 6px 15px rgba(0,0,0,0.2);
    }
    
    /* --- Modal Viewer --- */
    .modal{
      position:fixed;inset:0;background:rgba(0,0,0,0.7); /* Darker overlay */
      display:flex;align-items:center;justify-content:center;
      z-index:120;padding:20px;opacity:0;pointer-events:none;transition:opacity var(--transition-speed);
    }
    .modal.show{
      opacity:1;pointer-events:auto;
    }
    .modal img, .modal iframe {
      max-width:100%;
      max-height:85vh;
      border-radius:12px;
      box-shadow:0 20px 60px rgba(0,0,0,0.7);
      transform: scale(0.9); /* Initial scale for animation */
      opacity: 0;
      transition: transform var(--transition-speed) ease-out, opacity var(--transition-speed) ease-out;
    }
    .modal.show img, .modal.show iframe {
        transform: scale(1);
        opacity: 1;
    }
    .modal iframe {
      width: min(85vw, 1200px);
      height: 60vh;
      border: none;
    }
    .modal-close-btn {
        position: absolute;
        top: 20px;
        right: 20px;
        background: rgba(0,0,0,0.5);
        color: white;
        border: none;
        border-radius: 50%;
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 121;
        transition: background var(--transition-speed), transform var(--transition-speed);
    }
    .modal-close-btn:hover {
        background: var(--danger);
        transform: rotate(90deg);
    }
/* --- Theme Toggle Button --- */
.theme-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;   /* agak besar */
  height: 56px;  /* agak besar */
  border-radius: 50%;
  border: 2px solid var(--accent); /* garis tombol */
  background: var(--panel);
  cursor: pointer;
  overflow: hidden;
  z-index: 1;
  transition: background var(--transition-speed) var(--transition-ease), 
              border-color var(--transition-speed),
              transform 0.2s ease;
}

.theme-toggle:hover {
  transform: scale(1.08);
  border-color: var(--accent-2);
}

.theme-toggle:focus-visible {
  outline: 3px solid var(--accent-2);
  outline-offset: 4px;
}

/* --- Animated Glow Ring --- */
/* Parent button (PASTIKAN ADA) */
.theme-toggle {
  position: relative;
  isolation: isolate; /* WAJIB untuk Chrome */
}

/* Animated Glow Ring */
.theme-toggle::after {
  content: "";
  position: absolute;
  inset: -2px; /* aman untuk Chrome */
  border-radius: inherit;

  background: conic-gradient(
    var(--accent),
    var(--accent-2),
    var(--accent)
  );

  opacity: 0;
  pointer-events: none;
  z-index: 0;

  transition: opacity 0.3s ease;
  animation: spinRing 8s linear infinite;
  will-change: transform;
}

/* Hover */
.theme-toggle:hover::after {
  opacity: 0.4;
}

/* Active (click) */
.theme-toggle:active::after {
  opacity: 0.6;
}

/* Icon always above glow */
.theme-toggle svg {
  position: relative;
  z-index: 1;
}

/* --- Icon (Moon/Sun) --- */
.theme-toggle svg {
  width: 26px;
  height: 26px;
  color: var(--text);
  z-index: 1;
  transition: transform 0.6s ease, color var(--transition-speed);
}

/* --- Light Mode (Sun) --- */
:root.light .theme-toggle svg {
  transform: rotate(180deg) scale(1.15);
  color: #fbbf24; /* kuning terang */
}

/* --- Dark Mode (Moon) --- */
:root:not(.light) .theme-toggle svg {
  transform: rotate(0deg) scale(1);
  color: #38bdf8; /* biru soft */
}

/* --- Glow Ring Animation --- */
@keyframes spinRing {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
    
    /* --- Notification Popup --- */
    .notification {
      position: fixed;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%) scale(0.7);
      background: var(--panel);
      color: var(--text);
      padding: 20px 30px;
      border-radius: var(--radius);
      box-shadow: 0 10px 40px rgba(0,0,0,0.3);
      opacity: 0;
      transition: all 0.4s cubic-bezier(0.2, 0.9, 0.3, 1);
      z-index: 200;
      min-width: 300px;
      text-align: center;
      border: 2px solid var(--glass);
    }
    .notification.show {
      transform: translate(-50%, -50%) scale(1);
      opacity: 1;
    }
    .notification.success {
      border-color: var(--success);
      background: linear-gradient(135deg, var(--panel), rgba(52, 211, 153, 0.1));
    }
    .notification.error {
      border-color: var(--danger);
      background: linear-gradient(135deg, var(--panel), rgba(251, 113, 133, 0.1));
    }
    .notification .icon {
      font-size: 2.5rem; /* Larger icon */
      margin-bottom: 10px;
      display: block;
      color: var(--accent); /* Use accent color for icons */
    }
    .notification.success .icon { color: var(--success); }
    .notification.error .icon { color: var(--danger); }

    .notification .message {
      font-weight: 600;
      font-size: 1.1rem;
    }
/* THEME TOGGLE COMPONENT
   Standard: Professional UI/UX
   Description: A high-performance, accessible toggle with 
   conic-gradient glow and smooth SVG transformations.
*/

:root {
  /* Default variables jika belum didefinisikan di global */
  --toggle-size: 42px;
  --icon-size: 22px;
  --glow-opacity: 0.3;
  --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.theme-toggle {
  /* Layout & Sizing */
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--toggle-size);
  height: var(--toggle-size);
  position: relative;
  
  /* Styling */
  background: var(--panel);
  border: 1px solid var(--glass);
  border-radius: 999px; 
  cursor: pointer;
  overflow: hidden;
  
  /* Reset Default Button Styles */
  padding: 0;
  outline: none;
  
  /* Optimized Transitions */
  transition: var(--transition-smooth);
}

/* --- Interactive States --- */

.theme-toggle:hover {
  background: var(--glass);
  border-color: var(--accent);
  transform: translateY(-2px); /* Menambah kesan "lifted" */
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

/* Focus state untuk Accessibility */
.theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* --- Animated Glow Ring (Pseudo-element) --- */
.theme-toggle::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: conic-gradient(
    from 0deg,
    var(--accent),
    var(--accent-2),
    var(--accent)
  );
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
  /* Masking untuk membuat ring tipis di bagian border saja */
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  padding: 1px; /* Ketebalan ring glow */
}

.theme-toggle:hover::after {
  opacity: var(--glow-opacity);
  animation: rotateGlow 2s linear infinite;
}

/* --- Icon Handling --- */
.theme-toggle svg {
  width: var(--icon-size);
  height: var(--icon-size);
  color: var(--text);
  z-index: 1;
  transition: transform 0.5s cubic-bezier(0.68, -0.55, 0.27, 1.55), color 0.3s ease;
}

/* --- Theme Logic (Refined) --- */

/* Light Mode State */
:root.light .theme-toggle svg {
  transform: rotate(360deg) scale(1.1);
  color: #f59e0b; /* Sun Yellow */
}

/* Dark Mode State (Explicit) */
:root:not(.light) .theme-toggle svg {
  transform: rotate(0deg);
  color: #38bdf8; /* Moon Blue */
}

/* --- Keyframes for Advanced Polish --- */
@keyframes rotateGlow {
  to { transform: rotate(360deg); }
}

    /* --- Custom Loader --- */
    #loader {
      position: fixed;
      inset: 0;
      background: var(--bg);
      z-index: 999;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: opacity .4s ease;
    }
    #loader.hide {
      opacity: 0;
      pointer-events: none;
    }
    .modern-loader {
      width: 50px;
      height: 50px;
      border: 5px solid var(--glass);
      border-top-color: var(--accent);
      border-radius: 50%;
      animation: spin 1s linear infinite;
      position: relative;
    }
    .modern-loader::before {
      content: '';
      position: absolute;
      top: 50%;
      left: 50%;
      width: 20px;
      height: 20px;
      background: var(--accent-2);
      border-radius: 50%;
      transform: translate(-50%, -50%);
      animation: pulse-loader 1s infinite alternate;
    }
    @keyframes spin {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }
    @keyframes pulse-loader {
      from { transform: translate(-50%, -50%) scale(0.8); opacity: 0.7; }
      to { transform: translate(-50%, -50%) scale(1.2); opacity: 1; }
    }
    
    /* --- Responsive Design --- */
    @media (max-width:1000px){
      .hero{grid-template-columns:1fr; padding:28px 0}
      .grid-portfolio{grid-template-columns:repeat(2,1fr)}
      .cards{grid-template-columns:repeat(2,1fr)}
      .tools-grid{grid-template-columns:repeat(3,1fr)}
      .form-grid{grid-template-columns:1fr}
      .credibility-grid { grid-template-columns: 1fr; }
    }
    @media (max-width:900px){ /* Tablet and Mobile */
      nav.primary-nav { display: none; } /* Hide desktop nav */
      button.mobile-nav-toggle { display: block; } /* Show hamburger */
    }
    @media (min-width:901px){ /* Desktop */
      nav.mobile-menu, .mobile-menu-overlay { display: none; } /* Hide mobile menu elements */
    }
    @media (max-width:600px){
      header.nav{padding:10px}
      .brand h1{font-size:.95rem}
      .grid-portfolio{grid-template-columns:1fr}
      .cards{grid-template-columns:1fr}
      .tools-grid{grid-template-columns:repeat(2,1fr)}
      .notification { min-width: 280px; padding: 18px 25px; }
      .quick-questions { justify-content: center; }
      .payment-methods { grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); }
      .form-grid { grid-template-columns: 1fr; }
    }
    @media (max-width:400px){
      .tools-grid{grid-template-columns:1fr}
    }
    /* ============ Portfolio Slider (Responsive & Accessible, Upgraded Pro) ============ */

/* 1. CSS Variables (Tambahkan ini jika Anda belum memilikinya secara global) */
:root {
  --color-primary: #007bff; /* Biru cerah sebagai accent */
  --color-secondary: #00c6ff; /* Warna accent kedua untuk gradien */
  --color-text-dark: #001018; /* Warna teks gelap */
  --color-background-light: #f4f7f9; /* Latar belakang terang (jika digunakan) */
  --shadow-sm: 0 4px 10px rgba(2,6,23,0.1);
  --shadow-md: 0 8px 25px rgba(2,6,23,0.2);
  --radius-xl: 16px;
  --transition-fast: 0.25s ease-out;
  --transition-slow: 0.55s cubic-bezier(.22,.9,.35,1);
}

/* Ganti var(--accent) dan var(--accent-2) dengan var(--color-primary) dan var(--color-secondary)
   Jika Anda ingin menggunakan variabel default Anda, biarkan saja. */

/* 2. Wrapper (Peningkatan Batas Maksimum) */
.portfolio-slider {
  position: relative;
  width: 100%;
  max-width: 1300px; /* Sedikit lebih lebar */
  margin: 0 auto;
  overflow: hidden;
  padding: 0 10px; /* Padding samping untuk tampilan mobile */
}

/* 3. Track (Menggunakan Variabel Transisi) */
.portfolio-track {
  display: flex;
  transition: transform var(--transition-slow);
  will-change: transform;
}

/* 4. Item Base */
.portfolio-track .item {
  flex: 0 0 100%;
  max-width: 100%;
  padding: 12px; /* Sedikit lebih besar padding default */
  box-sizing: border-box;
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

/* 5. Image (Bayangan dan Transisi yang Lebih Baik) */
.portfolio-track img {
  width: 100%;
  height: 100%; /* Memastikan gambar mengisi item */
  display: block;
  border-radius: calc(var(--radius-xl) - 2px);
  object-fit: cover;
  box-shadow: var(--shadow-md);
  transition: transform 0.4s cubic-bezier(.17,.67,.83,.67), box-shadow 0.4s ease-out;
}

/* 6. Hover Zoom (Desktop) */
@media (min-width: 769px) {
  .portfolio-track .item:hover img { 
    transform: scale(1.04); /* Zoom sedikit lebih halus */
    box-shadow: 0 15px 35px rgba(0,0,0,0.4); /* Bayangan yang lebih dramatis */
  }
}

/* 7. Caption (Modern Glassmorphism Ditingkatkan) */
.portfolio-track .caption {
  position: absolute;
  left: 16px;
  bottom: 16px;
  /* Gradien latar belakang untuk sentuhan premium */
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0.05) 100%);
  backdrop-filter: blur(8px); /* Blur sedikit lebih kuat */
  -webkit-backdrop-filter: blur(8px);
  color: #fff; /* Teks putih untuk kontras yang lebih baik pada glass */
  text-shadow: 0 1px 2px rgba(0,0,0,0.3); /* Bayangan teks untuk keterbacaan */
  font-size: 0.85rem;
  padding: 8px 16px;
  border-radius: 999px;
  pointer-events: none;
  font-weight: 700;
  letter-spacing: .5px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.3); /* Garis batas tipis */
}

/* --- 8. Navigation Buttons (Elevated UI & UX) --- */

.portfolio-nav {
  display: flex;
  gap: 20px; /* Jarak sedikit lebih lega untuk estetika */
  justify-content: center;
  align-items: center;
  margin-top: 40px;
  /* Mencegah seleksi teks saat tombol diklik cepat */
  user-select: none; 
}

.portfolio-nav button {
  /* Variables Lokal (Memudahkan kustomisasi per komponen) */
  --btn-size: 52px;
  --btn-gradient: linear-gradient(135deg, var(--color-primary, #6366f1), var(--color-secondary, #a855f7));
  
  position: relative;
  width: var(--btn-size);
  height: var(--btn-size);
  padding: 0;
  
  display: inline-flex;
  align-items: center;
  justify-content: center;
  
  background: var(--btn-gradient);
  color: white; /* Kontras tinggi untuk aksesibilitas */
  border: none;
  border-radius: 50%;
  
  font-size: 1.4rem;
  cursor: pointer;
  outline: none;
  
  /* Transisi halus menggunakan cubic-bezier untuk feel yang lebih 'premium' */
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
  
  /* Performance: Mengoptimalkan rendering transform */
  will-change: transform;
}

/* Hover State */
.portfolio-nav button:hover:not(:disabled) {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
  filter: brightness(1.1);
}

/* Active/Click State */
.portfolio-nav button:active:not(:disabled) {
  transform: translateY(0) scale(0.92);
  filter: brightness(0.95);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* Focus State (Aksesibilitas Keyboard) */
.portfolio-nav button:focus-visible {
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.4);
}

/* Disabled State (Penting jika slider sudah di ujung) */
.portfolio-nav button:disabled {
  background: #e2e8f0;
  color: #94a3b8;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* Efek cahaya halus di atas tombol (Aesthetics) */
.portfolio-nav button::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: 50%;
  background: linear-gradient(to bottom, rgba(255,255,255,0.2), transparent);
  pointer-events: none;
}

/* 9. Focus visible state (Aksesibilitas Ditingkatkan) */
.portfolio-nav button:focus-visible {
  outline: 4px solid var(--color-primary, var(--accent));
  outline-offset: 4px;
  outline-style: dashed; /* Lebih menonjol */
  border-radius: 50%;
}

/* 10. Disabled state */
.portfolio-nav button.disabled,
.portfolio-nav button[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
  filter: grayscale(1);
}

/* --- 11. Layout Media Queries (Modern & Scalable) --- */

:root {
  --portfolio-gutter: 16px; /* Jarak default antar item */
  --items-per-row: 1;      /* Jumlah kolom default */
}

/* Base Style (Mobile First) */
.portfolio-slider {
  padding: 0 8px;
}

.portfolio-track .item {
  /* Menggunakan calc untuk menghitung lebar otomatis berdasarkan variabel */
  flex: 0 0 calc(100% / var(--items-per-row));
  max-width: calc(100% / var(--items-per-row));
  padding: calc(var(--portfolio-gutter) / 2);
  box-sizing: border-box;
}

/* Medium Device (Tablet) */
@media (min-width: 600px) {
  :root {
    --portfolio-gutter: 24px;
    --items-per-row: 2;
  }
}

/* Large Device (Desktop) */
@media (min-width: 1025px) {
  :root {
    --portfolio-gutter: 32px;
    --items-per-row: 3;
  }
}

/* --- 1. Tombol CTA Fleksibel (Modern & Accessible) --- */

.action-buttons a.cta-btn {
  /* Variabel Lokal: Memudahkan ganti warna/ukuran tanpa bongkar kode */
  --btn-bg: #FF9900; /* Warna Saweria */
  --btn-bg-hover: #e68a00;
  --btn-text: #ffffff;
  --btn-padding: 12px 24px;
  --btn-radius: 12px;
  
  display: inline-flex; 
  align-items: center; 
  justify-content: center;
  gap: 10px; /* Jarak antara logo dan teks */
  
  padding: var(--btn-padding);
  background-color: var(--btn-bg);
  color: var(--btn-text);
  border-radius: var(--btn-radius);
  
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.3px;
  
  /* Transisi halus untuk semua perubahan property */
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  
  /* Mencegah teks tertekuk ke bawah jika tombol kecil */
  white-space: nowrap;
  user-select: none;
}

/* Interaksi Hover (Saat Mouse Di Atas Tombol) */
.action-buttons a.cta-btn:hover {
  background-color: var(--btn-bg-hover);
  transform: translateY(-2px); /* Efek melayang */
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  filter: brightness(1.05);
}

/* Interaksi Active (Saat Tombol Diklik) */
.action-buttons a.cta-btn:active {
  transform: translateY(0) scale(0.96); /* Efek membal saat ditekan */
}

/* --- 2. Kontainer & Gambar Logo --- */

.action-buttons a.cta-btn .logo-saweria {
  display: flex;
  align-items: center;
  justify-content: center;
  /* Mencegah logo menyusut jika teks sangat panjang */
  flex-shrink: 0; 
}

.action-buttons a.cta-btn .logo-saweria img {
  /* Menggunakan unit 'em' agar ukuran logo otomatis mengikuti ukuran font teks */
  width: 1.25em; 
  height: 1.25em;
  
  object-fit: contain;
  /* Transisi tambahan khusus logo jika ingin efek putar/zoom */
  transition: transform 0.3s ease;
}

/* Bonus: Efek sedikit goyang pada logo saat tombol di-hover */
.action-buttons a.cta-btn:hover .logo-saweria img {
  transform: rotate(-5deg) scale(1.1);
}