/* === Base === */
  :root{
    --bg-dark:#0d1117; --fg-dark:#e6edf3; --panel-dark:#161b22;
    --accent:#58a6ff; --accent-strong:#1f6feb;
    --ok:#2ea043; --warn:#d29922; --err:#f85149;

    /* Header height variable used to offset content under fixed header */
    --header-h: 110px; /* desktop default */
  }

  @media (max-width: 900px){
    :root { --header-h: 68px; } /* mobile header height */
  }

  /* Better sizing baseline */
  *, *::before, *::after { box-sizing: border-box; }

  /* Scroll/overflow & phantom scrollbar prevention */
  html {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
    scrollbar-gutter: stable;
  }

  body {
    margin: 0;
    min-height: 100vh;
    font-family: 'JetBrains Mono', monospace;
    transition: background 0.3s, color 0.3s;
    overflow-y: auto;
  }
  body::before,
  body::after {
    top: 0; left: 0; right: 0; bottom: 0;
    overflow: hidden;
  }
  /* Headers / titles */
  h1, h2, h3, .brand {
    font-family: 'Orbitron', sans-serif;
    letter-spacing: 1px;
  }
  /* Buttons */
  .btn, .result-link {
    font-family: 'Exo 2', sans-serif;
    font-weight: 700;
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 0.7px;
  }
  /* Brand (icon + text) */
  .brand {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
    font-size: 22px;
    color: #7df9ff;
    display: flex;
    align-items: center;
    gap: 8px;
    text-shadow:
      0 0 5px #00d0ff,
      0 0 12px #00d0ff,
      0 0 20px #00d0ff;
  }

  .brand i {
    font-size: 26px;
    color: #7df9ff;
    text-shadow:
      0 0 5px #00d0ff,
      0 0 12px #00d0ff;
  }

  /* Brand (light mode) */
  body.light-mode .brand {
    color: #1e6ca6;
    text-shadow: none;
  }
  body.light-mode .brand i {
    color: #1e6ca6;
    text-shadow: none;
  }

  /* === Dark theme (cyberpunk) === */
  body.dark-mode {
    background: #0d1117;
    color: #e6edf3;
    position: relative;
  }

  /* Neon grid overlay */
  body.dark-mode::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image:
      linear-gradient(#00d0ff22 1px, transparent 1px),
      linear-gradient(90deg, #00d0ff22 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.15;
    animation: gridMove 20s linear infinite;
    z-index: 0;
    pointer-events: none;
  }

  /* Star-like specks for depth */
  body.dark-mode::after {
    content: "";
    position: fixed;
    inset: 0;
    background-image: 
      radial-gradient(1px 1px at 20% 30%, rgba(0,208,255,0.3), transparent),
      radial-gradient(1px 1px at 70% 80%, rgba(0,208,255,0.25), transparent),
      radial-gradient(1px 1px at 50% 60%, rgba(0,208,255,0.2), transparent),
      radial-gradient(1px 1px at 90% 20%, rgba(0,208,255,0.35), transparent);
    background-size: 200px 200px;
    opacity: 0.3;
    z-index: 0;
    pointer-events: none;
  }

  /* Grid subtle movement */
  @keyframes gridMove {
    0% { background-position: 0 0, 0 0; }
    100% { background-position: 60px 60px, 60px 60px; }
  }

  /* === Light theme === */
  body.light-mode {
    background: #e8ebf0;
    color: #1c1c1c;
    position: relative;
  }
  body.light-mode::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image: 
      linear-gradient(90deg, rgba(0,0,0,0.03) 1px, transparent 1px),
      linear-gradient(rgba(0,0,0,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
  }
  body.light-mode .tool-card span {
    color: #222;
  }

  /* === Header === */
  .header {
    position: fixed; top:0; left:0; width:100%;
    background: var(--panel-dark);
    box-shadow: 0 2px 6px rgba(0,0,0,0.4);
    z-index: 1000;
  }
  body.light-mode .header {
    background:#f9f9f9;
    border-bottom:1px solid #ddd;
    box-shadow: 0 1px 4px rgba(0,0,0,0.1);
  }

  /* Row 1 */
  .header-row{
    display:flex; align-items:center; justify-content:space-between;
    padding:12px 20px;
  }
  .actions{ display:flex; align-items:center; gap:10px; }
  .icon-btn{
    background:transparent; border:1px solid rgba(255,255,255,0.12);
    padding:8px 10px; border-radius:8px; color:inherit; cursor:pointer;
    transition:transform .1s, box-shadow .2s, border-color .2s;
  }
  .icon-btn:hover{ transform:translateY(-1px); box-shadow:0 0 8px var(--accent); border-color: var(--accent); }
  .mobile-only{ display:none; }
  .desktop-only{ display:block; }

  /* Row 2: centered pill nav */
  .nav-pills{
    display:flex; justify-content:center; gap:16px;
    padding:10px 12px 14px;
  }
  .nav-pills a,
  .nav-pills span.disabled {
    text-decoration:none; color:inherit; font-size:14px; padding:8px 14px;
    border-radius:999px; border:1px solid rgba(255,255,255,0.12);
    background:rgba(255,255,255,0.03);
    transition:box-shadow .2s, border-color .2s, color .2s;
    display:flex; align-items:center; gap:6px;
  }
  .nav-pills a:hover{ color:var(--accent); box-shadow:0 0 10px var(--accent); border-color:var(--accent); }
  .nav-pills a.active{ color:#fff; background:linear-gradient(135deg, var(--accent-strong), var(--accent)); border-color:transparent; box-shadow:0 0 12px var(--accent); }

  /* Disabled (navbar) */
  .nav-pills span.disabled {
    opacity:0.6;
    cursor:not-allowed;
  }
  .nav-pills span.disabled:hover {
    color: var(--err);
    border-color: var(--err);
    box-shadow: 0 0 10px var(--err);
    opacity:0.8;
  }
  /* === Navbar Dropdown Structure Fix === */
  .nav-pills .dropdown {
    position: relative;
  }

  .nav-pills .dropdown-content {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--panel-dark);
    border-radius: 8px;
    padding: 6px 0;
    min-width: 200px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.25);
    z-index: 2000;
  }

  body.light-mode .nav-pills .dropdown-content {
    background: #fff;
    border: 1px solid #ddd;
  }

  .nav-pills .dropdown-content a,
  .nav-pills .dropdown-content span.disabled {
    display: block;
    width: 100%;
    margin: 0;
    border-radius: 0;
    border: none;
    background: transparent;
    padding: 8px 14px;
  }

  .nav-pills .dropdown-content {
    display: none;
  }
  .nav-pills .dropdown.open .dropdown-content {
    display: flex;
    flex-direction: column;
  }
  /* Mobile drawer */
  .drawer{
    position:fixed; right:0; top:0; height:100vh; width:280px;
    background: var(--panel-dark); transform:translateX(100%);
    transition: transform .25s ease; z-index:1100; box-shadow:-6px 0 20px rgba(0,0,0,0.5);
  }
  .drawer.open{ transform:translateX(0); }
  .drawer-header{
    display:flex; align-items:center; justify-content:space-between;
    padding:14px 16px; border-bottom:1px solid rgba(255,255,255,0.08);
  }
  .drawer-header span{ font-weight:600; color:var(--accent); }
  .drawer-links{ display:flex; flex-direction:column; padding:10px; gap:6px; }
  .drawer-links a{
    text-decoration:none; color:inherit; padding:10px 12px; border-radius:8px;
    display:flex; align-items:center; gap:10px; transition: background .2s, color .2s, box-shadow .2s;
  }
  .drawer-links a:hover{ background:rgba(255,255,255,0.06); color:var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
  .drawer-links a.active{ background:linear-gradient(135deg, var(--accent-strong), var(--accent)); color:#fff; box-shadow:0 0 10px var(--accent); }
  .backdrop{
    position:fixed; inset:0; background: rgba(0,0,0,0.4);
    opacity:0; pointer-events:none; transition: opacity .25s ease; z-index:1050;
  }
  .backdrop.open{ opacity:1; pointer-events:all; }

  /* Mobile visibility rules */
  @media (max-width: 900px){
    .desktop-only{ display:none; }
    .mobile-only{ display:inline-flex; }
  }

  /* === Tool Area === */
  .tool-area {
    display: flex;
    justify-content: center;
    padding: 40px 20px;
    margin-top: var(--header-h);
    position: relative;
    z-index: 1;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 960px;
    margin-left: auto;
    margin-right: auto;
  }
  .tool-box {
    background: none;
    padding: 0;
    border-radius: 0;
    box-shadow: none;
    max-width: 100%;
    width: 100%;
    text-align: center;
  }
  @media (max-width: 768px) {
    .tool-box {
      background: rgba(255,255,255,0.05);
      padding: 20px;
      border-radius: 12px;
      box-shadow: 0 4px 12px rgba(0,0,0,0.3);
      margin: 0 10px;
    }
    body.light-mode .tool-box {
      background: rgba(255,255,255,0.9);
    }
  }
  @media (max-width: 900px){
    .nav-pills { display: none; }
    .mobile-only { display: inline-flex; }
  }

  h1{ margin-top:0; color:var(--accent); text-shadow:0 0 6px var(--accent); }

  /* === Subtitle === */
  .subtitle {
    font-size: 14px;
    margin-bottom: 20px;
    color: #aaa;
    transition: color 0.3s, text-shadow 0.3s;
  }
  body.dark-mode .subtitle {
    color: #9ccfff;
    text-shadow: 0 0 4px rgba(88,166,255,0.4), 0 0 10px rgba(88,166,255,0.2);
  }
  body.dark-mode .subtitle:hover {
    text-shadow: 0 0 6px rgba(88,166,255,0.6), 0 0 14px rgba(88,166,255,0.4);
  }
  body.light-mode .subtitle { color: #333; text-shadow: none; }


  /* Buttons */
  .btn{
    background: var(--accent-strong); color:#fff; border:none;
    padding: 10px 18px; border-radius: 8px; font-size:14px; cursor:pointer;
    transition: background .2s, box-shadow .2s, transform .1s; margin: 4px;
  }
  .btn:hover{ background:#388bfd; box-shadow:0 0 8px var(--accent); transform: translateY(-1px); }
  .btn.secondary{ background:#6c757d; }
  .btn.secondary:hover{ background:#848e97; }

  /* Messages */
  #uploadStatus, .success, .warning, .error, .loading{ text-align:center; justify-content:center; }
  .success{ color: var(--ok); display:flex; align-items:center; gap:6px; }
  .warning{ color: var(--warn); display:flex; align-items:center; gap:6px; }
  .error{ color: var(--err); display:flex; align-items:center; gap:6px; }
  .loading{ color:#aaa; display:flex; align-items:center; gap:6px; }
  .file-name{ font-weight:500; max-width:240px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }

  /* Result Download Button */
  .result-link {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 8px; margin-top: 20px; padding: 12px 22px; min-width: 180px;
    background: linear-gradient(135deg, var(--ok), #3fb950);
    color: #fff; font-weight: 600; text-decoration: none;
    border-radius: 10px; font-size: 15px; letter-spacing: .5px;
    transition: background .3s, box-shadow .3s, transform .1s;
  }
  .result-link:hover{ background: linear-gradient(135deg, #3fb950, #4ccd64); box-shadow:0 0 14px var(--ok); transform: translateY(-1px); }

  /* Tooltip */
  .tip{ position:relative; }
  .tip::after{
    content: attr(data-tip);
    position:absolute; bottom:125%; left:50%;
    transform: translateX(-50%) translateY(4px);
    background: rgba(13,17,23,0.95); color:#e6edf3;
    padding:6px 8px; border-radius:6px; font-size:12px; white-space:nowrap;
    opacity:0; pointer-events:none; transition: opacity .15s ease, transform .15s ease;
    box-shadow: 0 4px 12px rgba(0,0,0,0.25); z-index: 10;
  }
  .tip:hover::after{ opacity:1; transform: translateX(-50%) translateY(0); }
  body.light-mode .tip::after{ background: rgba(0,0,0,0.85); color:#fff; }
  /* Animations */
  @keyframes fadeIn{ from{opacity:0;transform:scale(.98)} to{opacity:1;transform:scale(1)} }

  /* Tool Cards */
  .tool-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 20px; margin-top: 30px; }
  .tool-card {
    position: relative;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px; padding: 20px;
    text-align: center; text-decoration: none;
    color: inherit; font-weight: 600;
    display: flex; flex-direction: column; align-items: center; gap: 12px;
    transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
  }
  .tool-card i { font-size: 32px; color: var(--accent); text-shadow: 0 0 6px var(--accent); }
  .tool-card:hover:not(.disabled):not(.active) {
    transform: translateY(-4px);
    box-shadow: 0 0 12px var(--accent);
    background: rgba(88,166,255,0.1);
  }
  .tool-card.active {
    background: linear-gradient(135deg, rgba(31,111,235,0.25), rgba(88,166,255,0.15));
    border: 1px solid var(--accent);
    color: var(--accent);
    box-shadow: 0 0 12px var(--accent);
    transform: translateY(-2px) scale(1.02);
  }
  .tool-card.active:hover {
    border-color: var(--accent);
    box-shadow: 0 0 14px var(--accent);
    color: var(--accent);
  }
  .tool-card.active i { color: var(--accent); text-shadow: 0 0 10px var(--accent); }
  .tool-card.disabled {
    opacity: 0.6;
    border: 1px solid rgba(255,255,255,0.15);
    background: rgba(255,255,255,0.03);
    cursor: not-allowed;
  }
  .tool-card.disabled:hover {
    border-color: var(--err);
    box-shadow: 0 0 12px var(--err);
    color: var(--err);
    opacity: 0.8;
  }

  /* Navbar Active + Disabled Hover Fix */
  .nav-pills a.active {
    color: #fff;
    background: linear-gradient(135deg, var(--accent-strong), var(--accent));
    border-color: transparent;
    box-shadow: 0 0 12px var(--accent);
  }
  .nav-pills a.active:hover {
    border-color: var(--accent);
    box-shadow: 0 0 14px var(--accent);
  }
  .nav-pills a.disabled {
    opacity: 0.6; cursor: not-allowed;
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(255,255,255,0.03);
  }
  .nav-pills a.disabled:hover {
    color: var(--err);
    border-color: var(--err);
    box-shadow: 0 0 12px var(--err);
    opacity: 0.8;
  }

  /* Footer */
  .footer {
    position: fixed; bottom: 0; left: 0; width: 100%;
    text-align: center; padding: 12px 15px; font-size: 13px;
    font-family: 'JetBrains Mono', monospace;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(6px); z-index: 1000;
  }
  body.dark-mode .footer {
    color: #7df9ff; text-shadow: 0 0 6px #00d0ff;
    border-top: 1px solid rgba(125, 249, 255, 0.2);
  }
  body.light-mode .footer {
    color: #333; border-top: 1px solid #ccc;
    background: rgba(255, 255, 255, 0.7);
  }  
#progressArea {
  margin-top: 16px;
  width: 100%;
  text-align: center;
}
#progressBar {
  height: 8px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-strong), var(--accent));
  box-shadow: 0 0 8px var(--accent);
  border-radius: 10px;
  transition: width 0.3s ease;
}
/* === Badge labels for Coming Soon tools === */
.tool-card .badge {
  position: absolute;
  top: 6px;
  right: 6px;
  background: var(--warn);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 6px;
  border-radius: 6px;
  box-shadow: 0 0 6px rgba(0,0,0,0.3);
}

/* =========================================================
   MAIN PAGES — ABOUT / FAQ / CONTACT / CONTRIBUTE
   Convertium Advanced Unified Theme (Cyberpunk Panels)
   ========================================================= */

/* Container layout */
.tool-area {
  display: flex;
  justify-content: center;
  padding: 60px 20px;
}

.tool-box {
  width: 100%;
  max-width: 900px;
  padding: 20px;
  color: var(--fg-dark);
}

/* Headings */
.tool-box h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.8rem;
  color: var(--accent);
  text-align: center;
  text-shadow: 0 0 10px rgba(107,200,240,0.6);
  margin-bottom: 10px;
}

.tool-box .subtitle {
  text-align: center;
  font-size: 1rem;
  color: #a9c9e6;
  margin-bottom: 32px;
}

/* Advanced (Chevron) Panels reused for content sections */
section.content-block,
.faq-container details.advanced,
.contact-container details.advanced,
.tool-box details.advanced {
  margin: 14px 0;
  border: 1px solid rgba(107,200,240,0.4);
  border-radius: 10px;
  background: rgba(30,108,166,0.08);
  box-shadow:
    0 0 10px rgba(107,200,240,0.2),
    inset 0 0 15px rgba(107,200,240,0.05);
  backdrop-filter: blur(6px);
  overflow: hidden;
  transition: all 0.3s ease;
}

section.content-block[open],
.faq-container details.advanced[open],
.contact-container details.advanced[open],
.tool-box details.advanced[open] {
  background: rgba(30,108,166,0.15);
  box-shadow:
    0 0 20px rgba(107,200,240,0.35),
    inset 0 0 20px rgba(107,200,240,0.1);
}

section.content-block summary,
.faq-container details.advanced summary,
.contact-container details.advanced summary {
  cursor: pointer;
  padding: 10px 14px;
  font-family: 'Orbitron', sans-serif;
  font-size: 1rem;
  color: #6bc8f0;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  text-shadow: 0 0 6px rgba(107,200,240,0.8);
  background: rgba(15,25,40,0.65);
  border-bottom: 1px solid rgba(107,200,240,0.15);
  transition: background 0.3s, color 0.3s;
}

section.content-block summary:hover,
.faq-container details.advanced summary:hover {
  background: rgba(30,108,166,0.15);
  color: #9ddcff;
  text-shadow: 0 0 12px rgba(107,200,240,1);
}

section.content-block summary::after,
.faq-container details.advanced summary::after {
  content: "\f282";
  font-family: "bootstrap-icons";
  font-size: 1rem;
  position: absolute;
  right: 14px;
  transition: transform 0.3s ease;
}

section.content-block[open] summary::after,
.faq-container details.advanced[open] summary::after {
  transform: rotate(180deg);
}

/* Inner text */
section.content-block > *:not(summary),
.faq-container details.advanced > *:not(summary),
.contact-container details.advanced > *:not(summary) {
  padding: 14px 16px;
  background: rgba(10,20,30,0.5);
  color: #d4e8f5;
  animation: fadeIn 0.25s ease-in;
}

/* Fade animation */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === FAQ items === */
.faq-item {
  margin: 10px 0;
  text-align: left;
}
.faq-item .question {
  font-weight: 600;
  color: var(--accent-strong);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.faq-item .question::before {
  font-family: "bootstrap-icons";
  content: "\F505";
  font-size: 16px;
  color: var(--accent);
}
.faq-item .answer {
  line-height: 1.6;
  color: #d4e8f5;
  margin-left: 24px;
  opacity: 0.9;
}
.faq-item .answer a {
  color: var(--accent);
  text-decoration: underline;
}

/* === Contact Page === */
.contact-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}
.contact-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(107,200,240,0.25);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  transition: all 0.25s;
}
.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 12px var(--accent);
}
.contact-card i {
  font-size: 28px;
  color: var(--accent);
  margin-bottom: 10px;
}
.contact-card h3 {
  font-size: 18px;
  color: var(--accent);
  margin-bottom: 8px;
}
.contact-card p {
  font-size: 14px;
  color: #e6edf3;
  opacity: 0.9;
}
.contact-card a {
  color: var(--accent);
  text-decoration: none;
}
.contact-card a:hover {
  text-decoration: underline;
}

/* === Contribute Wallets === */
.wallet-card {
  background: rgba(20,35,55,0.5);
  border: 1px solid rgba(107,200,240,0.25);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
  transition: all 0.25s;
}
.wallet-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 14px var(--accent);
}
.wallet-card .coin-icon {
  width: 32px;
  height: 32px;
  margin-bottom: 8px;
  filter: drop-shadow(0 0 6px var(--accent));
}
.wallet-card .wallet-address {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  word-break: break-all;
  opacity: 0.85;
}
.wallet-card .qr-img {
  max-width: 120px;
  margin-top: 10px;
  border-radius: 8px;
  box-shadow: 0 0 8px rgba(0,0,0,0.4);
}
.copy-hint {
  font-size: 11px;
  opacity: 0.6;
  margin-bottom: 4px;
}
.copy-btn {
  margin-top: 10px;
}

/* === Light Mode Variant === */
body.light-mode section.content-block,
body.light-mode details.advanced {
  background: #fafdff;
  border-color: #a9d8f7;
}
body.light-mode section.content-block summary,
body.light-mode details.advanced summary {
  background: #e8f3ff;
  color: #1e6ca6;
}
body.light-mode section.content-block summary:hover {
  background: #dbeeff;
  color: #125a87;
}
body.light-mode section.content-block > *:not(summary),
body.light-mode details.advanced > *:not(summary) {
  background: #fff;
  color: #0f2c46;
}

/* Tools Modal */
#toolsModal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: none;
  justify-content: center;
  align-items: flex-start;
  overflow-y: auto;
  z-index: 3000;
  padding: 40px 0;
}
#toolsModal.open { display: flex; }

#toolsModal .modal-content {
  background: var(--panel-dark);
  color: inherit;
  border-radius: 12px;
  max-width: 960px;
  width: 95%;
  padding: 2rem;
  box-shadow: 0 6px 18px rgba(0,0,0,0.5);
}
body.light-mode #toolsModal .modal-content {
  background: #fff;
  color: #222;
}

/* Compact cards inside modal */
#toolsModal .tool-card {
  padding: 12px;
  gap: 6px;
}
#toolsModal .tool-card i {
  font-size: 20px;
}
#toolsModal .tool-card span {
  font-size: 13px;
}
/* Desktop navbar Tools dropdown uses advanced style */
.nav-pills .dropdown-content {
  display: none;
  flex-direction: column;
  padding: 0;
  margin-top: 8px;
  border-radius: 10px;
  background: var(--panel-dark);
  box-shadow: 0 4px 12px rgba(0,0,0,0.35);
  min-width: 280px;
  z-index: 2000;
}

.nav-pills .dropdown.open .dropdown-content {
  display: block;
}

.nav-pills .dropdown-content .tool-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  padding: 12px;
  background: rgba(255,255,255,0.02);
}

.nav-pills .dropdown-content .tool-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  padding: 12px;
  text-align: center;
  font-size: 13px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

.nav-pills .dropdown-content .tool-card i {
  font-size: 22px;
  color: var(--accent);
}

.nav-pills .dropdown-content .tool-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 8px var(--accent);
  background: rgba(88,166,255,0.1);
}

::-webkit-scrollbar {
  width: 12px;
}
::-webkit-scrollbar-track {
  background: #0d1117;
  border-left: 1px solid rgba(0,208,255,0.15);
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #1E6CA6 0%, #58a6ff 100%);
  border-radius: 10px;
  border: 2px solid #0d1117;
  box-shadow: 0 0 12px rgba(0,208,255,0.6);
}
::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, #259DD8 0%, #7df9ff 100%);
  box-shadow: 0 0 16px rgba(125,249,255,0.9);
} 


/* Disabled links in drawer */
.drawer-links span.disabled {
  display: block;
  padding: 10px 12px;
  border-radius: 8px;
  opacity: 0.6;
  cursor: not-allowed;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.03);
  color: inherit;
  transition: color 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.drawer-links span.disabled:hover {
  color: var(--err);
  border-color: var(--err);
  box-shadow: 0 0 12px var(--err);
  opacity: 0.8;
}
body.light-mode .drawer-links span.disabled {
  border: 1px solid #ccc;
  background: #f9f9f9;
  color: #999;
}
body.light-mode .drawer-links span.disabled:hover {
  color: var(--err);
  border-color: var(--err);
  background: #fff;
}

/* Question */
.faq-item .question {
  font-weight: 600;
  color: var(--accent-strong);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.faq-item .question::before {
  font-family: "bootstrap-icons";
  content: "\F505";
  font-size: 16px;
  color: var(--accent);
}

/* Answer */
.faq-item .answer {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  margin-left: 26px;
  line-height: 1.6;
  color: inherit;
  opacity: 0.9;
  text-align: left;
}

.faq-item .answer::before {
  font-family: "bootstrap-icons";
  content: "\F24C";
  font-size: 15px;
  color: var(--accent-strong);
  margin-top: 3px;
}
.donation-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 20px 0;
  align-items: flex-start;
}

.donation-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  background: rgba(255,255,255,0.05);
}

.donation-item i {
  font-size: 22px;
  color: var(--accent);
}

.donation-item .label {
  font-weight: 600;
  margin-right: 8px;
}

.donation-item .address {
  font-family: monospace;
  font-size: 13px;
  padding: 2px 6px;
  background: rgba(0,0,0,0.25);
  border-radius: 6px;
}

.copy-btn {
  font-size: 13px;
  padding: 6px 10px;
  border-radius: 6px;
  margin-left: auto;
}
.copy-btn {
  position: relative;
}
.copy-btn::after {
  content: "Click to copy";
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0,0,0,0.8);
  color: #fff;
  padding: 4px 6px;
  font-size: 11px;
  border-radius: 4px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  white-space: nowrap;
}
.copy-btn:hover::after {
  opacity: 1;
}

.donation-option {
  text-align: center;
  margin: 30px 0;
}

.donation-option h3 {
  margin-bottom: 12px;
  color: var(--accent);
}

.donation-option .qr {
  width: 160px;
  height: 160px;
  margin: 10px auto;
  display: block;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(88,166,255,0.4);
}

.donation-option .wallet-address {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  margin: 10px 0;
  word-break: break-all;
}
.wallet-address {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  word-break: break-all;
  margin: 6px 0;
  opacity: 0.85;
}

.qr-img {
  max-width: 140px;
  margin-top: 10px;
  border-radius: 8px;
  box-shadow: 0 0 8px rgba(0,0,0,0.4);
}

.wallet-card {
  cursor: pointer;
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
}
.wallet-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 14px var(--accent);
}

.wallet-address {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  word-break: break-all;
  margin: 6px 0;
  opacity: 0.85;
}

.qr-img {
  max-width: 140px;
  margin-top: 10px;
  border-radius: 8px;
  box-shadow: 0 0 8px rgba(0,0,0,0.4);
}

.copy-btn {
  margin-top: 10px;
  font-size: 12px;
  padding: 6px 12px;
}

.copy-hint {
  margin-top: 6px;
  font-size: 11px;
  opacity: 0.6;
}

/* === Toast Notification === */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(100%);
  background: linear-gradient(135deg, var(--accent-strong), var(--accent));
  color: #fff;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 0 12px var(--accent);
  opacity: 0;
  transition: transform 0.4s ease, opacity 0.4s ease;
  z-index: 4000;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.coin-icon {
  width: 24px;
  height: 24px;
  filter: drop-shadow(0 0 6px var(--accent));
  opacity: 0.95;
}

/* Contribute page copy button alignment */
.wallet-card .copy-btn {
  display: block;
  margin: 12px auto 0;   /* top margin + centered */
  text-align: center;
}

.copy-btn {
  display: block;
  margin: 12px auto 0;
  padding: 8px 16px;
  font-size: 14px;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
  border: none;
}

.copy-btn:hover {
  background: var(--accent-strong);
  transform: translateY(-1px);
}

.copy-btn.copied {
  background: var(--ok);
  color: #fff;
}

/* === Contact Page === */
.contact-container {
  max-width: 900px;
  margin: 40px auto;
  padding: 0 20px;
  text-align: center;
}

/* Contact cards grid */
.contact-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}
.contact-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 20px;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}
.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 12px var(--accent);
  background: rgba(88,166,255,0.08);
}
.contact-card i {
  font-size: 28px;
  color: var(--accent);
  margin-bottom: 12px;
}
.contact-card h3 {
  margin: 6px 0;
  font-size: 18px;
  color: var(--accent);
}
.contact-card p {
  font-size: 14px;
  word-break: break-word;
}
.contact-card a {
  color: var(--accent-strong);
  text-decoration: none;
}
.contact-card a:hover {
  text-decoration: underline;
}

/* Contact form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: left;
  margin-top: 20px;
}
.contact-form .form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.contact-form label {
  font-weight: 600;
  font-size: 14px;
  color: var(--accent);
}
.contact-form input,
.contact-form textarea {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.05);
  color: inherit;
  font-size: 14px;
  resize: vertical;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  outline: none;
}
.contact-form .btn {
  align-self: flex-start;
}
/* === ADVANCED OPTIONS — CONVERTIUM CYBERPUNK UNIFIED FINAL === */

/* === Base shared style === */
details.advanced {
  margin: 16px 0;
  border: 1px solid rgba(107,200,240,0.4);
  border-radius: 10px;
  background: rgba(20,35,55,0.7);
  box-shadow:
    0 0 10px rgba(107,200,240,0.2),
    inset 0 0 10px rgba(107,200,240,0.05);
  backdrop-filter: blur(6px);
  transition: all 0.3s ease;
  overflow: hidden;
}
details.advanced[open] {
  background: rgba(25,50,80,0.75);
  border-color: rgba(107,200,240,0.6);
  box-shadow:
    0 0 18px rgba(107,200,240,0.25),
    inset 0 0 12px rgba(107,200,240,0.08);
}

/* === Header (summary) === */
details.advanced summary {
  position: relative;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.3px;
  color: #6bc8f0;
  background: rgba(15,25,40,0.65);
  border-bottom: 1px solid rgba(107,200,240,0.15);
  user-select: none;
  text-shadow: 0 0 6px rgba(107,200,240,0.8);
  transition: background 0.3s, color 0.3s, text-shadow 0.3s;
}
details.advanced summary:hover {
  background: rgba(30,108,166,0.15);
  color: #9ddcff;
  text-shadow: 0 0 12px rgba(107,200,240,1);
}
details.advanced summary::marker,
details.advanced summary::-webkit-details-marker {
  display: none;
}
details.advanced summary::after {
  content: "\f285";
  font-family: "bootstrap-icons";
  font-size: 1rem;
  position: absolute;
  right: 16px;
  color: #6bc8f0;
  transform: rotate(0deg);
  transition: transform 0.3s ease;
}
details.advanced[open] summary::after {
  transform: rotate(180deg);
}

/* === Inner content === */
details.advanced > *:not(summary) {
  padding: 14px 16px;
  background: rgba(10,20,30,0.5);
  animation: fadeIn 0.25s ease-in;
  color: #d4e8f5;
}

/* === Selects / Inputs === */
details.advanced .select-wrapper {
  position: relative;
  width: 100%;
  text-align: center;
  margin: 8px 0;
}
details.advanced select {
  width: 100%;
  background: rgba(15,30,45,0.9);
  border: 1px solid rgba(107,200,240,0.35);
  border-radius: 6px;
  color: #e6edf3;
  padding: 8px 10px;
  font-family: "JetBrains Mono", monospace;
  font-weight: 600;
  text-align-last: center;
  text-align: center;
  appearance: none;
  transition: all 0.25s ease;
}
details.advanced select option {
  text-align: center;
  font-family: "JetBrains Mono", monospace;
  color: #e6edf3;
  background-color: rgba(15,25,40,0.95);
}
details.advanced .select-wrapper::after {
  content: "\f282";
  font-family: "bootstrap-icons";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: #6bc8f0;
  font-size: 1rem;
  transition: transform 0.25s ease;
}
details.advanced select:hover,
details.advanced select:focus {
  border-color: #6bc8f0;
  box-shadow: 0 0 12px rgba(107,200,240,0.6);
  outline: none;
}
details.advanced select:focus ~ .select-wrapper::after {
  transform: translateY(-50%) rotate(180deg);
}

/* === Checkboxes === */
details.advanced input[type="checkbox"] {
  accent-color: #6bc8f0;
  transform: scale(1.1);
  filter: drop-shadow(0 0 3px rgba(107,200,240,0.8));
  cursor: pointer;
  transition: all 0.25s ease;
}
details.advanced input[type="checkbox"]:hover {
  filter: drop-shadow(0 0 6px rgba(107,200,240,1));
}

/* === Options Grid (buttons/choices inside details) === */
details.advanced .options {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  padding: 16px;
  background: rgba(255,255,255,0.03);
  border-top: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
}
details.advanced .options .option {
  flex: 1 1 140px;
  max-width: 220px;
  padding: 12px 16px;
  border-radius: 10px;
  text-align: center;
  font-weight: 600;
  font-size: 14px;
  color: inherit;
  background: rgba(0, 208, 255, 0.05);
  border: 1px solid rgba(0, 208, 255, 0.15);
  cursor: pointer;
  transition: background 0.25s, box-shadow 0.25s, border-color 0.25s, color 0.25s;
}
details.advanced .options .option:hover {
  background: rgba(0, 208, 255, 0.12);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}
details.advanced .options .option.active {
  background: linear-gradient(135deg, rgba(31,111,235,0.25), rgba(88,166,255,0.15));
  border: 1px solid var(--accent);
  box-shadow: 0 0 14px var(--accent);
  color: var(--accent);
}

/* === Navbar dropdown instance === */
.nav-pills .dropdown-content details.advanced {
  margin: 8px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 10px;
  background: rgba(255,255,255,0.03);
}
.nav-pills .dropdown-content details.advanced summary {
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  justify-content: space-between;
  display: flex;
  align-items: center;
  background: transparent;
  border: none;
  text-shadow: none;
}
.nav-pills .dropdown-content details.advanced summary::after {
  content: "▸";
  font-size: 14px;
  transition: transform 0.25s ease;
}
.nav-pills .dropdown-content details.advanced[open] summary::after {
  transform: rotate(90deg);
}

/* === Drawer (mobile sidebar) instance === */
.drawer-links > details.advanced {
  all: unset;
  display: block;
  margin: 2px 0;
}
.drawer-links > details.advanced > summary {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  color: inherit;
  transition: background .2s, color .2s, box-shadow .2s;
  position: relative;
}
.drawer-links > details.advanced:not([open]) > summary:hover {
  background: rgba(255,255,255,0.06);
  color: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}
.drawer-links > details.advanced[open] > summary {
  background: linear-gradient(135deg, var(--accent-strong), var(--accent));
  color: #fff;
  box-shadow: 0 0 10px var(--accent);
}
.drawer-links > details.advanced:not([open]) > summary {
  background: transparent;
  box-shadow: none;
}
.drawer-links > details.advanced > summary::after {
  font-family: "bootstrap-icons";
  content: "\f284";
  margin-left: auto;
  color: currentColor;
  transition: transform 0.3s ease;
}
.drawer-links > details.advanced[open] > summary::after {
  transform: rotate(-90deg);
}

/* === Animation === */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === Light mode variant === */
body.light-mode details.advanced {
  background: #f8fbff;
  border-color: #c6e3f7;
  box-shadow: 0 0 10px rgba(31,111,235,0.15);
}
body.light-mode details.advanced[open] {
  background: #ffffff;
  border-color: #9fd0f7;
  box-shadow: 0 0 14px rgba(31,111,235,0.25);
}
body.light-mode details.advanced summary {
  background: #e8f3ff;
  color: #1e6ca6;
  text-shadow: none;
}
body.light-mode details.advanced summary:hover {
  background: #dbeeff;
  color: #125a87;
}
body.light-mode details.advanced > *:not(summary) {
  background: #fafdff;
  color: #0f2c46;
}
body.light-mode details.advanced select {
  background: #ffffff;
  color: #0f2c46;
  border-color: #a9d8f7;
}
body.light-mode details.advanced select option {
  background-color: #ffffff;
  color: #0f2c46;
}
body.light-mode details.advanced summary::after,
body.light-mode details.advanced .select-wrapper::after {
  color: #1e6ca6;
}

/* Fix extra top padding in Tools navbar dropdown */
.nav-pills .dropdown-content {
  padding-top: 0;
  margin-top: 0;
}

/* === ADVANCED OPTIONS — CYBER STYLE (Centered layout & chevrons, checkbox on new line) === */
details.advanced {
  margin: 16px 0;
  border: 1px solid rgba(107,200,240,0.4);
  border-radius: 10px;
  background: rgba(30,108,166,0.08);
  box-shadow:
    0 0 10px rgba(107,200,240,0.2),
    inset 0 0 15px rgba(107,200,240,0.05);
  backdrop-filter: blur(6px);
  transition: all 0.3s ease;
  overflow: hidden;
  text-align: center;
}
details.advanced[open] {
  background: rgba(30,108,166,0.15);
  box-shadow:
    0 0 20px rgba(107,200,240,0.35),
    inset 0 0 20px rgba(107,200,240,0.1);
}
details.advanced summary {
  cursor: pointer;
  padding: 10px 14px;
  font-family: 'Orbitron', sans-serif;
  font-size: 0.95rem;
  color: #6bc8f0;
  display: flex;
  justify-content: center; /* Centered title text */
  align-items: center;
  user-select: none;
  position: relative;
}
details.advanced summary i {
  margin-right: 6px;
}
details.advanced summary::after {
  content: '\f282';
  font-family: "Bootstrap-icons";
  font-size: 1rem;
  position: absolute;
  right: 14px;
  transition: transform 0.3s ease;
}
details.advanced[open] summary::after {
  transform: rotate(180deg);
}
details.advanced .advanced-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
  padding: 14px 14px 8px; /* reduced bottom padding */
}
details.advanced .adv-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 120px;
}
details.advanced .adv-item label {
  color: #9fd9ff;
  font-size: 0.8rem;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
  justify-content: center;
}
details.advanced .adv-item select {
  background: rgba(15,66,125,0.3);
  border: 1px solid rgba(107,200,240,0.4);
  color: #e3f6ff;
  border-radius: 6px;
  padding: 4px 8px;
  font-family: 'JetBrains Mono', monospace;
}
details.advanced .adv-item select:focus {
  outline: none;
  border-color: #6bc8f0;
  box-shadow: 0 0 8px rgba(107,200,240,0.4);
}
details.advanced .adv-item.checkbox {
  width: 100%;
  display: flex;
  justify-content: center;
  margin-top: 6px; /* slightly closer to bottom */
  margin-bottom: 6px; /* reduce spacing to border */
}
details.advanced .adv-item.checkbox label {
  flex-direction: row;
  gap: 6px;
  color: #9fd9ff;
}
details.advanced input[type="checkbox"] {
  accent-color: #6bc8f0;
  transform: scale(1.1);
}

.nav-pills .dropdown-content .tool-list {
  padding-top: 0;
  margin-top: 0;
}

.nav-pills .dropdown-content .tool-list > *:first-child {
  margin-top: 0;
  padding-top: 4px;
}
.spin {
  display: inline-block;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
/* unify download button across all tools */
.btn.success {
  background: linear-gradient(135deg, var(--ok), #1ac553ff);
  color: #fff;
  font-weight: 600;
  border: none;
  padding: 10px 22px;
  border-radius: 8px;
  transition: background .2s, box-shadow .2s, transform .1s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn.success:hover {
  background: #1ac553ff;
  box-shadow: 0 0 12px var(--ok);
  transform: translateY(-1px);
}

/* === General Consistency Helpers === */
.btn-themed-success-index {
  background: linear-gradient(135deg, var(--ok), #3fb950);
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background 0.2s, transform 0.1s, box-shadow 0.2s;
}
.btn-themed-success-index:hover {
  background: linear-gradient(135deg, #3fb950, #4ccd64);
  box-shadow: 0 0 12px var(--ok);
  transform: translateY(-1px);
}
.btn.cancel-mode {
  background: rgba(255,60,60,0.15) !important;
  border: 1px solid rgba(255,80,80,0.6);
  color: #ff6b6b;
  box-shadow: 0 0 10px rgba(255,0,0,0.3);
}
.btn.cancel-mode:hover {
  background: rgba(255,60,60,0.25) !important;
  box-shadow: 0 0 14px rgba(255,0,0,0.5);
  transform: translateY(-1px);
}
#clearBtnVIDEO.cancel-mode {
  background: rgba(255, 0, 0, 0.2) !important;
  border-color: rgba(255, 50, 50, 0.7) !important;
  box-shadow: 0 0 12px rgba(255, 50, 50, 0.3) !important;
}

/* === Toast Notification === */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(30,108,166,0.85);
  color: #e6edf3;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  padding: 10px 18px;
  border: 1px solid rgba(107,200,240,0.4);
  border-radius: 10px;
  box-shadow:
    0 0 10px rgba(107,200,240,0.2),
    inset 0 0 15px rgba(107,200,240,0.05);
  backdrop-filter: blur(6px);
  display: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 9999;
}
.toast.show {
  opacity: 1;
  display: block;
}

/* tighten spacing between expanded section title and its tool cards */
main.tool-area details.advanced[open] > summary {
  margin-bottom: 0.3rem;
}

main.tool-area details.advanced[open] .tool-list {
  margin-top: 0.3rem;
}

main.tool-area .tool-list {
  padding-top: 0.2rem;
  padding-bottom: 0.2rem;
}