/* ---------- Variables & base ---------- */
:root{
  --bg-color: #f5f7fa;
  --text-color: #222;
  --accent-color: #007acc;
  --button-bg: #007acc;
  --button-text: #fff;
  --input-bg: #fff;
  --border-color: #d6dbe7;
  --btn-border-color: #007acc;

  /* Use a stable max content width (desktop readability) */
  --max-content-width: 980px;

  /* Side ad width in px (only relevant on large screens) */
  --side-ad-width: 212px;

  /* fallback bottom ad height (script may override) */
  --bottom-ad-height: 94px;

  /* topbar height: update if you change topbar padding/size */
  --topbar-height: 56px;

  --edge-gap: 50px;
}

/* page baseline */
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Topbar (new) */
.topbar {
  background: var(--input-bg);
  border-bottom: 1px solid var(--border-color);
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  width: 100%;
  z-index: 1000;
}
.topbar-inner {
  position: relative; /* allows absolute centering of center item */
  display: flex;
  align-items: center;
  width: 100%;
  max-width: none;
  padding: 0 var(--edge-gap); /* small left/right margin */
  margin: 0; /* no auto centering */
  gap: 1rem;
}

/* left / center / right regions */
.topbar-left { display:flex; align-items:center; flex:0 0 auto; }
.topbar-center {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display:flex;
  align-items:center;
  justify-content:center;
  pointer-events: auto;
}
.topbar-right { margin-left: auto; display:flex; align-items:center; }

/* brand */
.site-brand .brand-link {
  font-weight: 700;
  color: var(--accent-color);
  text-decoration: none;
  font-size: 1.6rem;
}

/* nav (now on right) */
.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.nav-links a {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 600;
  padding: 6px 8px;
  border-radius: 6px;
}
.nav-links a:hover {
  background: rgba(0,0,0,0.04);
}

/* NAV TOGGLE (hamburger) - hidden by default, shown on very small screens */
.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  font-size: 20px;
  padding: 6px;
  margin-right: 6px;
  cursor: pointer;
}

/* Dark theme */
[data-theme="dark"]{
  --bg-color: #121212;
  --text-color: #e9eef6;
  --accent-color: #4fc3f7;
  --button-bg: #4fc3f7;
  --button-text: #000;
  --input-bg: #1f1f1f;
  --border-color: #2b2b2b;
}

/* Reset */
* { box-sizing: border-box; }

/* Container: fixed readable width by default */
.container{
  width: 100%;
  max-width: var(--max-content-width); /* stable 980px on desktop */
  margin: 0 auto;
  padding: 0 1rem;
}

/* On very large screens where side-ads are shown, allow container to use remaining width
   This prevents horizontal overflow and keeps content and side ads harmonious.
   We apply this only for large viewports (where side-ads are visible).
*/
@media (min-width: 1201px) {
  .container {
    max-width: calc(100% - (var(--side-ad-width) * 2));
  }
}

/* Header */
header { padding: 1.5rem 0; text-align: center; }
.header-card {
  display: inline-block;
  padding: 1.25rem 1.5rem;
}
h1 { margin: 0; font-size: 2rem; color: var(--accent-color); }
.subtitle { font-size: 1.50rem; margin: 0.35rem 0; color: #6b7280; }

/* Layout wrapper */
.layout-wrapper {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 1rem;
  padding: 0 1rem 0;
  position: relative;
}

/* Main content should expand fully within its container.
   On mobile (side-ads hidden) .container is 100% of viewport minus 1rem padding, so main content will fit.
*/
.main-content {
  flex: 1 1 auto;
  min-width: 0; /* important for flex children to be able to shrink properly */
  margin: 0 auto;
  width: 100%;
}

/* Main panel */
.main-panel {
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.25rem;
  box-shadow: 0 8px 24px rgba(16,24,40,0.04);
  margin-bottom: calc(var(--bottom-ad-height) + 12px);
}

/* Inputs */
.label-bold { font-weight: 600; display: block; margin-bottom: 0.5rem; }
textarea, input[type="text"] {
  width: 100%;
  padding: 0.9rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--input-bg);
  color: var(--text-color);
  font-size: 1rem;
  resize: vertical;
}
textarea { min-height: 210px; margin-top: 16px; }

/* Buttons */
.btn-group-center { display: flex; gap: 0.6rem; flex-wrap: wrap; width: 100%; max-width: none; justify-content: center; }
.btn-group { display: flex; gap: 0.6rem; margin-top: 0.8rem; flex-wrap: wrap; }
button {
  cursor: pointer;
  padding: 0.7rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--btn-border-color);
  background: transparent;
  color: var(--text-color);
  font-weight: 600;
}
#cleanBtn {
  background: linear-gradient(180deg, var(--button-bg), #005f8c);
  color: var(--button-text);
  border: none;
  box-shadow: 0 6px 18px rgba(0,0,0,0.06);
}
button:focus { outline: 3px solid rgba(37,99,235,0.12); outline-offset: 2px; }

/* Secondary btn */
.secondary-btn { display: inline-flex; align-items: center; gap: 0.5rem; }
.btn-icon { width: 18px; height: 18px; display: inline-block; }

/* Options panel */
#options {
  margin-top: 1.5rem;
  background-color: var(--bg-color);
  padding: 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}
.option-group label { display: block; margin: 1rem 0; }
.settings-header {
  font-weight: bold;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.arrow { font-size: 1.5rem; transition: transform 0.3s ease; user-select: none; }
#caseOptions, #customWordOptions {
  padding: 1rem;
  background-color: var(--bg-color);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

/* Side ads (fixed) — visible on wide screens only */
/* start below the topbar so they don't overlap the new header */
.fixed-side-ad {
  width: var(--side-ad-width);
  position: fixed;
  top: calc(24px + var(--topbar-height));
  z-index: 995;
  background: linear-gradient(180deg,#fafbfd,#fff);
  border: 1px dashed var(--border-color);
  border-radius: 8px;
  padding: 0.75rem;
  font-size: 0.9rem;
  color: #374151;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(2,6,23,0.04);
  max-height: calc(100vh - 48px);
  overflow: auto;
}
.left-ad { left: 18px; }
.right-ad { right: 18px; }

/* Bottom ad */
.fixed-bottom-ad {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: var(--bottom-ad-height);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--input-bg);
  border-top: 1px solid var(--border-color);
  z-index: 997;
  padding: 0 1rem;
}

/* Toast — fixed above bottom ad */
#toast {
  position: fixed;
  right: 20px;
  bottom: calc(var(--bottom-ad-height) + 20px);
  background: rgba(16,24,40,0.96);
  color: #fff;
  padding: 0.65rem 1rem;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(2,6,23,0.4);
  opacity: 0; transform: translateY(6px); pointer-events: none; transition: all .22s ease;
  z-index: 9999;
}
#toast.show { opacity: 1; transform: translateY(0); pointer-events: auto; }

/* Meta row */
.meta-row { display: flex; justify-content: flex-end; margin-top: 0.5rem; color: #6b7280; font-size: 0.9rem; }

/* Footer inside main content */
.site-footer { padding: 46px 0 0 0; margin-top: 1.5rem; border-top: 1px solid rgba(0,0,0,0.04); }
.main-content > .site-footer { padding-bottom: calc(var(--bottom-ad-height) + 12px); }
.site-footer .container { text-align: center; }
.footer-text { margin: 0; color: #6b7280; font-size: 0.95rem; }

/* Mobile responsive: allow content to use full width */
@media (max-width: 1200px) {
  .fixed-side-ad { display: none; }
  .container { max-width: 100%; padding: 0 0.8rem; }
  .main-content { width: 100%; min-width: 0; }
}

/* --- Small screens: collapse nav into hamburger --- */
@media (max-width: 768px) {
  .layout-wrapper { padding-bottom: 1.5rem; }
  .main-panel { padding: 1rem; }
  h1 { font-size: 1.6rem; }
  .header-card { padding: 1rem; }

  /* topbar compact */
  .topbar { height: auto; padding: 0.5rem 0; }
  .topbar-inner { padding: 0 0.8rem; gap: 0.6rem; }
  .nav-links { gap: 0.6rem; font-size: 0.95rem; }

  /* show hamburger, hide nav by default */
  .nav-toggle { display: block; }
  .nav-links { display: none; }

  /* when open, show nav as a vertical dropdown */
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: calc(100% + 6px);
    right: 0.8rem;
    left: 0.8rem;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    z-index: 1002;
  }
  .nav-links.open a {
    display: block;
    padding: 0.6rem 0.8rem;
    border-radius: 6px;
  }

  /* ensure center item flows naturally to avoid overlap */
  .topbar-center { position: static; transform: none; order: 2; margin: 0 auto; }
  .topbar-right { order: 3; }
}

/* small UI polish */
.theme-toggle { background: transparent; border: 1px solid var(--border-color); border-radius: 8px; padding: 0.4rem; }
.theme-icon { width: 18px; height: 18px; }



/* Keep moved informational section/footer aligned with centered content area */
.main-content > .text-cleaner-content,
.main-content > .site-footer {
  width: 100%;
  max-width: var(--max-content-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

@media (min-width: 1201px) {
  .main-content > .text-cleaner-content,
  .main-content > .site-footer {
    max-width: calc(100% - (var(--side-ad-width) * 2));
  }
}

/* Informational content block above footer */
.text-cleaner-content {
  margin-top: 1.5rem;
  padding: 1.5rem;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 10px;
}

.text-cleaner-content section + section {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(0,0,0,0.07);
}

.text-cleaner-content h2 {
  margin: 0 0 0.85rem;
  color: var(--accent-color);
  font-size: 1.5rem;
  line-height: 1.3;
}

.text-cleaner-content h3 {
  margin: 1rem 0 0.55rem;
  font-size: 1.08rem;
  line-height: 1.35;
}

.text-cleaner-content p {
  margin: 0.6rem 0;
  color: var(--text-color);
}

.text-cleaner-content ul {
  margin: 0.65rem 0 0.9rem 1.15rem;
  padding: 0;
}

.text-cleaner-content li {
  margin: 0.35rem 0;
}

@media (max-width: 768px) {
  .text-cleaner-content {
    padding: 1rem;
  }

  .text-cleaner-content h2 {
    font-size: 1.35rem;
  }
}