/* ── DESIGN SYSTEM & TOKENS ─────────────────────────────────── */
:root {
  --bg: #060913;
  --bg-card: rgba(15, 22, 42, 0.65);
  --bg-card-hover: rgba(22, 32, 60, 0.8);
  --border: rgba(255, 255, 255, 0.07);
  --border-focus: rgba(6, 182, 212, 0.5);

  --primary: #8b5cf6;
  --secondary: #06b6d4;
  --accent: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;

  --text: #f8fafc;
  --text-dim: #94a3b8;
  --text-disabled: #475569;

  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-title: 'Outfit', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --radius: 12px;
}

/* ── RESET ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* ── AMBIENT FLOATING ORBS ─────────────────────────────────── */
.ambient-orbs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.12;
  animation: orbFloat 20s ease-in-out infinite;
}

.orb-1 {
  width: 500px; height: 500px;
  background: var(--primary);
  top: -10%; left: -5%;
  animation-duration: 25s;
}

.orb-2 {
  width: 400px; height: 400px;
  background: var(--secondary);
  bottom: -10%; right: -5%;
  animation-delay: -8s;
  animation-duration: 22s;
}

.orb-3 {
  width: 300px; height: 300px;
  background: var(--accent);
  top: 40%; left: 50%;
  animation-delay: -15s;
  animation-duration: 30s;
  opacity: 0.06;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(30px, -40px) scale(1.05); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(15px, 35px) scale(1.03); }
}

/* ── TOAST NOTIFICATIONS ───────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background: rgba(16, 185, 129, 0.95);
  color: #fff;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: 0 8px 30px -8px rgba(0, 0, 0, 0.4);
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2s forwards;
  pointer-events: auto;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-10px); }
}

/* ── AD SLOT STYLING ───────────────────────────────────────────
   Slots live only in the sidebar (side) or between content
   sections (middle) — never above the header or in the footer.
   common.js removes every .ad-container until ads are enabled. */
.ad-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px 0;
  width: 100%;
  position: relative;
  z-index: 1;
}

.ad-placeholder {
  background: rgba(255, 255, 255, 0.015);
  border: 1px dashed rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--text-disabled);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  font-weight: 600;
  transition: var(--transition);
}

.ad-sidebar .ad-placeholder { width: 100%; height: 250px; }

.ad-inline { padding: 24px 0; }
.ad-inline .ad-placeholder { width: 100%; height: 90px; max-width: 728px; }

.ad-placeholder:hover {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.15);
}

/* ── HEADER (compact, sticks to the top) ───────────────────── */
.header {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  background: rgba(6, 9, 19, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container { display: flex; flex-direction: column; gap: 8px; }

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; }

/* ── SITE NAVIGATION ───────────────────────────────────────── */
.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-family: var(--font-title);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}

.site-nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border);
}

.site-nav a.active {
  color: var(--text);
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.18), rgba(6, 182, 212, 0.18));
  border-color: rgba(6, 182, 212, 0.35);
}

.logo-icon {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.5rem;
}

.logo-text {
  font-family: var(--font-title);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo-text .accent {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tool-count {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.tagline { color: var(--text-dim); font-size: 0.95rem; font-weight: 400; }

/* ── PAGE HERO (shared across pages) ───────────────────────── */
.page-hero {
  max-width: 820px;
  padding-top: 44px;
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  font-family: var(--font-title);
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 14px;
}

.page-hero .hero-highlight {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-hero-sub {
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 1.7;
  max-width: 660px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
  padding: 0;
  list-style: none;
}

.hero-points li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-title);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-dim);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 7px 14px;
}

.hero-points .point-icon { color: var(--accent); }

/* ── LAYOUT ────────────────────────────────────────────────── */
.main-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  padding: 32px 24px 24px;
  align-items: start;
  position: relative;
  z-index: 1;
}

/* ── SIDEBAR ───────────────────────────────────────────────── */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 84px; /* clears the sticky header */
  /* sticky creates a stacking context, so the tab tooltips are
     trapped inside it — the sidebar must sit above the
     content panel (z-index: 1) for tooltips to overlap it */
  z-index: 2;
}

.tool-tabs { display: flex; flex-direction: column; gap: 6px; }

.tab-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-dim);
  padding: 14px 16px;
  text-align: left;
  font-family: var(--font-title);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
}

.tab-btn:hover {
  background: var(--bg-card-hover);
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateX(4px);
}

.tab-btn.active {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(6, 182, 212, 0.15));
  border-color: var(--secondary);
  color: var(--text);
  box-shadow: 0 4px 20px -2px rgba(6, 182, 212, 0.15);
}

.tab-btn .icon { font-size: 1rem; }

/* ── TOOL PANELS ───────────────────────────────────────────── */
.content-panel {
  /* near-opaque so the animated ::before gradient reads as a
     rim glow, not a colour wash across the whole panel */
  background: rgba(10, 15, 30, 0.96);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px;
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.3);
  position: relative;
  z-index: 1;
}

.tab-panel { display: none; }

.tab-panel.active {
  display: block;
  animation: fadeIn 0.35s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

h2 {
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.panel-desc {
  color: var(--text-dim);
  font-size: 0.92rem;
  margin-bottom: 32px;
  max-width: 700px;
}

.tool-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: start;
}

/* ── FORMS ─────────────────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-dim);
}

input[type="text"],
input[type="url"],
input[type="email"],
input[type="number"],
input[type="tel"],
select,
textarea {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  padding: 12px 16px;
  outline: none;
  transition: var(--transition);
  width: 100%;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--secondary);
  box-shadow: 0 0 12px rgba(6, 182, 212, 0.12);
}

textarea { resize: vertical; }

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8'%3E%3Cpath d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.char-counter {
  align-self: flex-end;
  font-size: 0.7rem;
  color: var(--text-dim);
}
.char-counter.warning { color: var(--warning); }
.char-counter.success { color: var(--accent); }

/* ── RANGE SLIDERS ─────────────────────────────────────────── */
.slider-group {
  margin-bottom: 20px;
}

.styled-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.1);
  outline: none;
  margin-top: 8px;
  cursor: pointer;
}

.styled-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(6, 182, 212, 0.3);
  transition: transform 0.15s ease;
}

.styled-range::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.styled-range::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 8px rgba(6, 182, 212, 0.3);
}

/* ── TOGGLE GROUP ──────────────────────────────────────────── */
.toggle-group {
  display: flex;
  gap: 4px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
  padding: 4px;
  border: 1px solid var(--border);
}

.toggle-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-dim);
  padding: 8px 16px;
  border-radius: 6px;
  font-family: var(--font-title);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.toggle-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 2px 10px rgba(6, 182, 212, 0.2);
}

.toggle-btn:hover:not(.active) { color: var(--text); }

/* ── COLOR INPUT GROUP ─────────────────────────────────────── */
.color-input-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

input[type="color"] {
  -webkit-appearance: none;
  appearance: none;
  width: 44px;
  height: 44px;
  border: 2px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  padding: 2px;
  background: transparent;
  flex-shrink: 0;
}

input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }

input[type="color"]::-webkit-color-swatch {
  border: none;
  border-radius: 5px;
}

.color-hex-input {
  font-family: var(--font-mono);
  font-size: 0.9rem !important;
  letter-spacing: 0.05em;
}

.color-hex-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ── CHECKBOX ──────────────────────────────────────────────── */
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 0.88rem !important;
  text-transform: none !important;
  letter-spacing: normal !important;
  color: var(--text) !important;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--secondary);
  cursor: pointer;
}

/* ── PREVIEWS ──────────────────────────────────────────────── */
.tool-previews {
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.tool-previews h3 {
  font-family: var(--font-title);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.preview-tabs {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
  margin-bottom: 20px;
}

.preview-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 12px;
  cursor: pointer;
  border-radius: 4px;
  transition: var(--transition);
}

.preview-tab-btn:hover { color: var(--text); background: rgba(255, 255, 255, 0.05); }
.preview-tab-btn.active { color: var(--secondary); background: rgba(6, 182, 212, 0.08); }

.preview-box { display: none; margin-bottom: 24px; }
.preview-box.active { display: block; }

/* ── GOOGLE PREVIEW ────────────────────────────────────────── */
.google-preview {
  background: #ffffff;
  border-radius: 8px;
  padding: 16px 20px;
  font-family: arial, sans-serif;
  text-align: left;
}

.google-url {
  font-size: 14px;
  color: #202124;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.google-url .arrow { font-size: 10px; color: #70757a; margin-left: 2px; }

.google-title {
  font-size: 20px;
  color: #1a0dab;
  line-height: 1.3;
  margin-bottom: 4px;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.google-title:hover { text-decoration: underline; }

.google-desc {
  font-size: 14px;
  color: #4d5156;
  line-height: 1.57;
  word-wrap: break-word;
}

/* ── FACEBOOK PREVIEW ──────────────────────────────────────── */
.fb-preview {
  background: #242526;
  border: 1px solid #3e4042;
  border-radius: 8px;
  overflow: hidden;
  font-family: Helvetica, Arial, sans-serif;
  text-align: left;
}

.fb-img-container {
  width: 100%;
  aspect-ratio: 1.91 / 1;
  background: #18191a;
  overflow: hidden;
  border-bottom: 1px solid #3e4042;
}

.fb-img-container img { width: 100%; height: 100%; object-fit: cover; }
.fb-info { padding: 12px; }
.fb-domain { font-size: 12px; color: #b0b3b8; text-transform: uppercase; margin-bottom: 4px; }

.fb-title {
  font-size: 16px;
  font-weight: 600;
  color: #e4e6eb;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.fb-desc {
  font-size: 14px;
  color: #b0b3b8;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── TWITTER PREVIEW ───────────────────────────────────────── */
.tw-preview {
  background: #15181c;
  border: 1px solid #2f3336;
  border-radius: 16px;
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  text-align: left;
}

.tw-img-container {
  width: 100%;
  aspect-ratio: 1.91 / 1;
  background: #000;
  overflow: hidden;
  border-bottom: 1px solid #2f3336;
}

.tw-img-container img { width: 100%; height: 100%; object-fit: cover; }
.tw-info { padding: 12px; }
.tw-domain { font-size: 13px; color: #71767b; margin-bottom: 2px; }

.tw-title {
  font-size: 15px;
  font-weight: 500;
  color: #e7e9ea;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tw-desc {
  font-size: 14px;
  color: #71767b;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ── OUTPUT CONTAINER ──────────────────────────────────────── */
.output-code-container {
  margin-top: 24px;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

.output-header {
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border);
  padding: 10px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-dim);
}

.btn-copy {
  background: var(--secondary);
  border: none;
  border-radius: 4px;
  color: #000;
  cursor: pointer;
  font-family: var(--font-title);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 5px 12px;
  text-transform: uppercase;
  transition: var(--transition);
}

.btn-copy:hover { background: var(--text); box-shadow: 0 0 10px rgba(6, 182, 212, 0.4); }

.mono-output,
textarea#output-meta-code {
  background: #04060b;
  border: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #8be9fd;
  padding: 14px 16px;
  line-height: 1.6;
  outline: none;
  border-radius: 0;
  width: 100%;
}

/* ── PX REM ────────────────────────────────────────────────── */
.pxrem-card {
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.pxrem-card h3 {
  font-family: var(--font-title);
  font-size: 1.1rem;
  margin-bottom: 20px;
}

.calc-row { display: flex; align-items: center; gap: 16px; margin: 28px 0; }
.calc-group { flex: 1; }

.input-unit { position: relative; display: flex; align-items: center; }
.input-unit input { padding-right: 50px; }

.unit-tag {
  position: absolute;
  right: 16px;
  color: var(--text-dim);
  font-size: 0.8rem;
  font-weight: 700;
  pointer-events: none;
}

.calc-arrows { font-size: 1.2rem; color: var(--secondary); font-weight: bold; }

.quick-table-container { margin-top: 32px; }

.quick-table-container h4 {
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.quick-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.quick-table th, .quick-table td { border-bottom: 1px solid var(--border); padding: 8px 12px; text-align: left; }
.quick-table th { color: var(--text-dim); font-weight: 600; }
.quick-table tr:hover td { background: rgba(255, 255, 255, 0.02); }

/* ── GRADIENT GENERATOR ────────────────────────────────────── */
.gradient-preview-swatch {
  width: 100%;
  height: 200px;
  border-radius: 12px;
  border: 1px solid var(--border);
  margin-bottom: 20px;
  transition: background 0.3s ease;
  background: linear-gradient(135deg, #8b5cf6, #06b6d4);
}

.color-stop-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  padding: 10px 12px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.color-stop-row input[type="color"] {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.color-stop-row input[type="range"] { flex: 1; }

.color-stop-row .stop-percent {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  min-width: 36px;
  text-align: right;
}

.btn-remove-stop {
  background: transparent;
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--danger);
  width: 28px;
  height: 28px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  transition: var(--transition);
  flex-shrink: 0;
}

.btn-remove-stop:hover {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--danger);
}

.btn-add-stop {
  background: transparent;
  border: 1px dashed var(--border);
  color: var(--text-dim);
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  cursor: pointer;
  font-family: var(--font-title);
  font-size: 0.82rem;
  font-weight: 600;
  transition: var(--transition);
}

.btn-add-stop:hover {
  border-color: var(--secondary);
  color: var(--secondary);
  background: rgba(6, 182, 212, 0.05);
}

.preset-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.preset-swatch {
  height: 36px;
  border-radius: 6px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
}

.preset-swatch:hover {
  border-color: var(--text);
  transform: scale(1.08);
}

/* ── BOX SHADOW GENERATOR ──────────────────────────────────── */
.shadow-preview-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 220px;
  margin-bottom: 20px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 40px;
}

.shadow-preview-card {
  width: 160px;
  height: 160px;
  background: linear-gradient(135deg, var(--bg-card), rgba(30, 40, 70, 0.9));
  border: 1px solid var(--border);
  border-radius: 16px;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: box-shadow 0.2s ease;
}

.shadow-card-text {
  font-family: var(--font-title);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-dim);
}

/* ── SWAP BUTTON ───────────────────────────────────────────── */
.btn-swap {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-family: var(--font-title);
  font-size: 0.85rem;
  font-weight: 600;
  transition: var(--transition);
  width: 100%;
  margin-bottom: 24px;
}

.btn-swap:hover {
  border-color: var(--secondary);
  color: var(--secondary);
  background: rgba(6, 182, 212, 0.05);
}

/* ── CONTRAST CHECKER ──────────────────────────────────────── */
.contrast-ratio-display {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 28px;
  padding: 20px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.ratio-number {
  font-family: var(--font-title);
  font-size: 3rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.ratio-label {
  font-size: 1rem;
  color: var(--text-dim);
  font-weight: 500;
}

.wcag-results {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.wcag-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 8px;
  border: 1px solid var(--border);
}

.wcag-label {
  font-size: 0.85rem;
  color: var(--text);
  font-weight: 500;
}

.wcag-label small {
  color: var(--text-dim);
  font-weight: 400;
}

.wcag-badge {
  font-family: var(--font-title);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.wcag-badge.pass {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.wcag-badge.fail {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.contrast-preview {
  border-radius: 12px;
  padding: 32px;
  transition: all 0.3s ease;
  min-height: 200px;
}

.contrast-heading {
  font-family: var(--font-title);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.contrast-body {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.contrast-small {
  font-size: 0.75rem;
  line-height: 1.5;
  opacity: 0.85;
}

/* ── SEO ARTICLES ──────────────────────────────────────────── */
.seo-explanation {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.seo-explanation h3 {
  font-family: var(--font-title);
  font-size: 1.15rem;
  margin-bottom: 12px;
  color: var(--text);
}

.seo-explanation p {
  color: var(--text-dim);
  font-size: 0.88rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

/* ── SCROLL TO TOP ─────────────────────────────────────────── */
.scroll-top-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border: none;
  color: #fff;
  font-size: 1.2rem;
  font-weight: bold;
  cursor: pointer;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.3s ease;
  pointer-events: none;
  box-shadow: 0 4px 16px rgba(6, 182, 212, 0.3);
}

.scroll-top-btn.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.scroll-top-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.5);
}

/* ── COOKIE CONSENT BANNER ─────────────────────────────────── */
.cookie-banner-popup {
  position: fixed;
  bottom: 24px;
  left: 24px;
  z-index: 9999;
  background: rgba(15, 22, 42, 0.95);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  max-width: 400px;
  width: calc(100% - 48px);
  box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(20px);
  transform: translateY(150%);
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  text-align: left;
}

.cookie-banner-popup.visible { transform: translateY(0); }

.cookie-popup-content p {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.6;
  margin-bottom: 16px;
}

.cookie-popup-content a { color: var(--secondary); text-decoration: none; }
.cookie-popup-content a:hover { text-decoration: underline; }

.cookie-popup-actions { display: flex; justify-content: flex-end; }

/* ── RESOURCE LINK CARDS (internal links to other pages) ───── */
.resource-section {
  padding: 8px 24px 24px;
  position: relative;
  z-index: 1;
}

.resource-section h2 {
  font-family: var(--font-title);
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.resource-section > p {
  color: var(--text-dim);
  font-size: 0.92rem;
  margin-bottom: 20px;
}

.resource-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.resource-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

.resource-card:hover {
  border-color: var(--secondary);
  transform: translateY(-3px);
  box-shadow: 0 12px 28px -12px rgba(0, 0, 0, 0.45);
}

.resource-card .resource-kicker {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--secondary);
}

.resource-card h3 {
  font-family: var(--font-title);
  font-size: 1.15rem;
  font-weight: 600;
  margin: 8px 0;
}

.resource-card p {
  color: var(--text-dim);
  font-size: 0.86rem;
  line-height: 1.7;
}

.resource-card .resource-cta {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-title);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--secondary);
}

/* ── FAQ SECTION ───────────────────────────────────────────── */
.faq-section {
  padding: 24px 24px 40px;
  position: relative;
  z-index: 1;
}

.faq-section h2 {
  font-family: var(--font-title);
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 860px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  padding: 16px 20px;
  font-family: var(--font-title);
  font-size: 0.95rem;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  transition: var(--transition);
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '+';
  font-size: 1.2rem;
  color: var(--text-dim);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

.faq-item[open] summary::after { transform: rotate(45deg); color: var(--secondary); }

.faq-item summary:hover { color: var(--secondary); }

.faq-item .faq-answer {
  padding: 0 20px 18px;
  color: var(--text-dim);
  font-size: 0.88rem;
  line-height: 1.75;
}

.faq-item .faq-answer a { color: var(--secondary); text-decoration: none; }
.faq-item .faq-answer a:hover { text-decoration: underline; }

/* ── FOOTER ────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  background: rgba(6, 9, 19, 0.8);
  padding: 24px 0 40px;
  margin-top: 60px;
  position: relative;
  z-index: 1;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-nav { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-nav a { color: var(--text-dim); text-decoration: none; transition: var(--transition); }
.footer-nav a:hover { color: var(--text); }
.footer-contact { font-size: 0.8rem; color: var(--text-disabled); margin: 0; width: 100%; text-align: center; }
.footer-contact a { color: var(--text-dim); text-decoration: none; transition: var(--transition); }
.footer-contact a:hover { color: var(--secondary); }

/* ── FILTER CHIPS: disabled state (shared by pages 2–3) ─────
   A chip is greyed out when selecting it, combined with the
   other active filters, would produce zero results. */
.chip.disabled {
  opacity: 0.3;
  pointer-events: none;
  cursor: default;
}

/* ── WIDE SCREENS: use more of the viewport ────────────────── */
@media (min-width: 1600px) {
  .container { max-width: 1560px; }
}

/* ── FOCUS RING ACCESSIBILITY ──────────────────────────────── */
*:focus-visible {
  outline: 2px solid var(--secondary);
  outline-offset: 2px;
}

input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: none; /* handled by border-color already */
}

/* ── ANIMATED GRADIENT BORDER ON CONTENT PANEL ─────────────── */
.content-panel {
  position: relative;
}

.content-panel::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 17px;
  padding: 2px;
  background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent), var(--primary));
  background-size: 300% 300%;
  animation: borderGlow 8s ease-in-out infinite;
  /* mask everything except the 2px rim, so the animated
     gradient is a border glow — not a wash over the panel */
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  z-index: -1;
  opacity: 0.6;
  pointer-events: none;
}

@keyframes borderGlow {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* ── KEYBOARD SHORTCUT BADGES ──────────────────────────────── */
.shortcut-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--text-disabled);
  margin-left: auto;
  flex-shrink: 0;
}

.tab-btn.active .shortcut-badge {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(6, 182, 212, 0.3);
  color: var(--text-dim);
}

/* ── CHARACTER COUNT PROGRESS BAR ──────────────────────────── */
.char-progress-wrapper {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-self: flex-end;
  width: 100%;
}

.char-progress-bar {
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 3px;
  overflow: hidden;
}

.char-progress-fill {
  height: 100%;
  border-radius: 3px;
  background: var(--secondary);
  transition: width 0.2s ease, background 0.2s ease;
}

.char-progress-fill.warning { background: var(--warning); }
.char-progress-fill.danger { background: var(--danger); }

/* ── RESET BUTTON ──────────────────────────────────────────── */
.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.btn-reset {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-dim);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-family: var(--font-title);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: var(--transition);
}

.btn-reset:hover {
  border-color: var(--danger);
  color: var(--danger);
  background: rgba(239, 68, 68, 0.05);
}

/* ── INPUT VALIDATION GLOW ─────────────────────────────────── */
input.valid, textarea.valid {
  border-color: rgba(16, 185, 129, 0.4);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.08);
}

input.invalid, textarea.invalid {
  border-color: rgba(239, 68, 68, 0.4);
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.08);
}

/* ── TOOLTIP ───────────────────────────────────────────────── */
.tab-btn {
  position: relative;
}

.tab-tooltip {
  position: absolute;
  left: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: rgba(15, 22, 42, 0.95);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 400;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 100;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.tab-btn:hover .tab-tooltip {
  opacity: 1;
}

/* ── RESPONSIVE ────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .main-layout { grid-template-columns: 1fr; }
  .sidebar { position: relative; top: 0; }
  .tool-tabs { flex-direction: row; flex-wrap: wrap; }
  .tab-btn { flex: 1; min-width: 140px; justify-content: center; font-size: 0.8rem; padding: 10px 12px; }
  .tab-btn:hover { transform: none; }
  .ad-sidebar { display: none; }
  .shortcut-badge { display: none; }
  .tab-tooltip { display: none; }
}

@media (max-width: 768px) {
  .header-top { flex-direction: column; align-items: flex-start; gap: 10px; }
  .tool-count { display: none; }
  .site-nav { width: 100%; }
  .site-nav a { flex: 1; text-align: center; padding: 8px 6px; font-size: 0.78rem; }
  .tool-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .content-panel { padding: 24px 18px; }
  .preset-grid { grid-template-columns: repeat(3, 1fr); }
  .calc-row { flex-direction: column; gap: 12px; }
  .calc-arrows { transform: rotate(90deg); }
  .panel-header { flex-direction: column; align-items: flex-start; gap: 8px; }
  .resource-cards { grid-template-columns: 1fr; }
}