/* FontChanger - "Ink & Violet" design system. Pure CSS, mobile-first, themeable. */

/* ---------- tokens ---------- */
:root {
  --bg: #f7f5fc;
  --glow: rgba(124, 58, 237, .10);
  --surface: #ffffff;
  --surface-2: #f1eef9;
  --text: #191632;
  --text-soft: #4b4668;
  --muted: #8b86a3;
  --border: #e6e2f2;
  --border-soft: #efecf8;
  --a1: #7c3aed;               /* violet */
  --a2: #d946ef;               /* fuchsia */
  --accent: #7c3aed;
  --accent-text: #7c3aed;
  --accent-soft: #f3efff;
  --accent-soft-2: #e9e1ff;
  --ring: rgba(124, 58, 237, .25);
  --heart: #f43f5e;
  --skeleton-a: #e9e5f5;
  --skeleton-b: #ddd7ee;
  --shadow-sm: 0 1px 2px rgba(25, 22, 50, .06);
  --shadow-md: 0 6px 16px -6px rgba(76, 29, 149, .14);
  --shadow-lg: 0 14px 34px -12px rgba(76, 29, 149, .22);
  --grad: linear-gradient(135deg, var(--a1), var(--a2));
  color-scheme: light;
}
[data-theme="dark"] {
  --bg: #0d0916;
  --glow: rgba(139, 92, 246, .14);
  --surface: #17122a;
  --surface-2: #201a38;
  --text: #ece9f7;
  --text-soft: #c3bcdd;
  --muted: #8d86ab;
  --border: #2c2547;
  --border-soft: #241e3d;
  --a1: #a78bfa;
  --a2: #e879f9;
  --accent: #8b5cf6;
  --accent-text: #b7a3fb;
  --accent-soft: #241d43;
  --accent-soft-2: #2e2557;
  --ring: rgba(167, 139, 250, .35);
  --heart: #fb7185;
  --skeleton-a: #262045;
  --skeleton-b: #322a58;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, .5);
  --shadow-md: 0 6px 16px -6px rgba(0, 0, 0, .6);
  --shadow-lg: 0 14px 34px -12px rgba(0, 0, 0, .7);
  color-scheme: dark;
}

/* ---------- base ---------- */
*, ::before, ::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: radial-gradient(90% 30rem at 50% -6rem, var(--glow), transparent 70%) no-repeat, var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea { font: inherit; color: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4 { letter-spacing: -.02em; line-height: 1.25; }
.fontchanger-hidden { display: none !important; }
.fontchanger-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
.fontchanger-ico { width: 16px; height: 16px; fill: currentColor; }
.fontchanger-ico-20 { width: 20px; height: 20px; }
.fontchanger-text-center { text-align: center; }

/* ---------- navbar ---------- */
.fontchanger-navbar { position: relative; z-index: 50; background: color-mix(in srgb, var(--surface) 86%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border-soft); }
.fontchanger-nav-inner { max-width: 76rem; margin: 0 auto; padding: 0 16px; }
.fontchanger-nav-row { display: flex; align-items: center; gap: 8px; height: 60px; }
.fontchanger-logo { font-size: 21px; font-weight: 700; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.fontchanger-nav-actions { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.fontchanger-nav-toggle-btn, .fontchanger-theme-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 12px;
  color: var(--text-soft);
  transition: background-color .15s, color .15s;
}
.fontchanger-nav-toggle-btn:hover, .fontchanger-theme-btn:hover { background: var(--accent-soft); color: var(--accent-text); }
.fontchanger-theme-btn svg { width: 20px; height: 20px; }
#fontchanger-nav-toggle svg { width: 24px; height: 24px; }
.fontchanger-nav-menu {
  position: absolute; top: 60px; left: 0; z-index: 50;
  width: 100%; padding: 12px 16px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}
.fontchanger-nav-link { display: block; padding: 10px 4px; font-weight: 500; color: var(--text-soft); border-radius: 8px; transition: color .15s; }
.fontchanger-nav-link:hover { color: var(--accent-text); }
@media (min-width: 768px) {
  .fontchanger-nav-toggle-btn { display: none; }
  .fontchanger-nav-menu {
    display: flex !important;
    position: static; width: auto; padding: 0;
    background: transparent; border: 0; box-shadow: none;
    align-items: center; gap: 26px;
    margin-left: auto; order: 2;
  }
  .fontchanger-nav-actions { margin-left: 20px; order: 3; }
  .fontchanger-nav-link { padding: 0; }
}

/* ---------- layout ---------- */
.fontchanger-page-container { max-width: 60rem; margin: 0 auto; padding: 20px 12px 12px; }
.fontchanger-page-container > * + * { margin-top: 26px; }
@media (min-width: 640px) { .fontchanger-page-container { padding: 28px 24px 12px; } }
.fontchanger-divider { border: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--border), transparent); margin: 22px 0; }

/* ---------- hero ---------- */
.fontchanger-hero-title {
  font-size: 30px; font-weight: 800;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  margin-bottom: 8px;
}
.fontchanger-hero-tagline { color: var(--muted); font-size: 14px; max-width: 40rem; margin: 0 auto; }
@media (min-width: 640px) { .fontchanger-hero-title { font-size: 38px; } .fontchanger-hero-tagline { font-size: 16px; } }

/* ---------- text input ---------- */
.fontchanger-input-card { position: sticky; top: 8px; z-index: 40; }
.fontchanger-input-wrap { position: relative; }
.fontchanger-text-field {
  display: block; width: 100%;
  min-height: 74px; max-height: 40vh;
  padding: 14px 88px 26px 16px;
  font-size: 16px; line-height: 1.5;
  background: var(--surface);
  border: 1.5px solid var(--border); border-radius: 16px;
  box-shadow: var(--shadow-md);
  resize: vertical;
  transition: border-color .15s, box-shadow .15s;
}
.fontchanger-text-field::placeholder { color: var(--muted); }
.fontchanger-text-field:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--ring), var(--shadow-md); }
.fontchanger-clear-btn {
  position: absolute; top: 10px; right: 10px;
  display: flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 999px;
  background: var(--surface-2); color: var(--muted);
  transition: background-color .15s, color .15s;
}
.fontchanger-clear-btn:hover { background: var(--accent-soft-2); color: var(--accent-text); }
.fontchanger-clear-btn svg { width: 14px; height: 14px; }
.fontchanger-char-count {
  position: absolute; bottom: 10px; right: 14px;
  font-size: 11px; color: var(--muted); pointer-events: none;
}

/* ---------- slider card ---------- */
.fontchanger-slider-card { display: flex; align-items: center; gap: 12px; background: var(--surface); border: 1px solid var(--border-soft); border-radius: 999px; box-shadow: var(--shadow-sm); padding: 10px 16px; }
.fontchanger-slider-title { color: var(--muted); font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; white-space: nowrap; }
.fontchanger-range { flex: 1; width: 100%; height: 6px; appearance: none; -webkit-appearance: none; background: var(--accent-soft-2); border-radius: 8px; accent-color: var(--accent); cursor: pointer; }

/* ---------- chips menu ---------- */
.fontchanger-menu-shell { position: relative; }
.fontchanger-menu-shell::before, .fontchanger-menu-shell::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: 32px; z-index: 2;
  pointer-events: none; transition: opacity .2s;
}
.fontchanger-menu-shell::before { left: 0; background: linear-gradient(to right, var(--bg), transparent); }
.fontchanger-menu-shell::after { right: 0; background: linear-gradient(to left, var(--bg), transparent); }
.fontchanger-menu-shell.fontchanger-at-start::before, .fontchanger-menu-shell.fontchanger-at-end::after { opacity: 0; }
.fontchanger-scroll-btn {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
  width: 32px; height: 32px; border-radius: 999px;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface); color: var(--text-soft);
  border: 1px solid var(--border); box-shadow: var(--shadow-sm);
  opacity: 0; visibility: hidden;
  transition: opacity .18s;
}
.fontchanger-scroll-btn.fontchanger-show { opacity: 1; visibility: visible; }
.fontchanger-scroll-btn.fontchanger-prev { left: -6px; }
.fontchanger-scroll-btn.fontchanger-next { right: -6px; }
.fontchanger-scroll-btn svg { width: 15px; height: 15px; }
@media (max-width: 767px) { .fontchanger-scroll-btn { display: none; } }
.fontchanger-menu {
  display: flex; gap: 8px; overflow-x: auto; white-space: nowrap;
  padding: 4px 2px 12px; scroll-behavior: smooth;
  -ms-overflow-style: none; scrollbar-width: none;
}
.fontchanger-menu::-webkit-scrollbar { display: none; }
.fontchanger-chip {
  display: inline-flex; align-items: center; gap: 6px; flex-shrink: 0;
  padding: 9px 15px 9px 11px; border-radius: 999px;
  font-size: 13px; font-weight: 600;
  background: var(--surface); color: var(--text-soft);
  border: 1px solid var(--border);
  transition: border-color .15s, color .15s, background-color .15s;
}
.fontchanger-chip:hover { border-color: var(--accent); color: var(--accent-text); }
.fontchanger-chip svg { width: 15px; height: 15px; flex-shrink: 0; color: var(--muted); transition: color .15s; }
.fontchanger-chip:hover svg { color: var(--accent-text); }
.fontchanger-chip.fontchanger-active { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 4px 14px -4px var(--ring); }
.fontchanger-chip.fontchanger-active svg { color: #fff; }

/* ---------- font output ---------- */
#fontchanger-output { display: flex; flex-direction: column; gap: 18px; }
.fontchanger-category { background: var(--surface); border: 1px solid var(--border-soft); border-radius: 18px; padding: 6px 10px 12px; box-shadow: var(--shadow-sm); content-visibility: auto; contain-intrinsic-size: auto 1000px; }
@media (min-width: 768px) {
  .fontchanger-category { padding: 10px 16px 16px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 16px; align-items: start; }
  .fontchanger-category > .fontchanger-category-title,
  .fontchanger-category > .fontchanger-section-sub,
  .fontchanger-category > .fontchanger-load-more-wrap,
  .fontchanger-category > #fontchanger-random-container { grid-column: 1 / -1; }
  #fontchanger-random-container { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 16px; align-items: start; }
}
.fontchanger-category-title {
  display: flex; align-items: center; gap: 8px;
  color: var(--text); font-size: 17px; font-weight: 700;
  margin: 12px 0 12px; padding: 0;
}
.fontchanger-category-title::before { content: ""; width: 4px; height: 18px; border-radius: 4px; background: var(--grad); }
.fontchanger-block { padding: 5px 0; }
.fontchanger-label { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; font-size: 11px; font-weight: 500; color: var(--muted); letter-spacing: .04em; margin: 0 0 3px 2px; }
.fontchanger-len { font-size: 10px; font-weight: 400; color: var(--muted); opacity: .75; flex-shrink: 0; margin-right: 4px; }
.fontchanger-row {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 48px;
  background: var(--bg); border: 1px solid var(--border-soft); border-radius: 12px;
  padding: 8px 6px 8px 14px; cursor: pointer;
  transition: border-color .15s, box-shadow .15s;
}
.fontchanger-row:hover { border-color: var(--accent); box-shadow: 0 3px 12px -6px var(--ring); }
.fontchanger-preview {
  flex: 1; color: var(--text); font-size: 17px; font-weight: 500;
  overflow-x: auto; white-space: nowrap;
  scrollbar-width: none;
}
.fontchanger-preview::-webkit-scrollbar { display: none; }
@media (min-width: 640px) { .fontchanger-preview { font-size: 19px; } }
.fontchanger-icon-btn {
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  width: 40px; height: 40px; margin-left: 2px; border-radius: 10px;
  color: var(--muted);
  transition: background-color .15s, color .15s;
}
.fontchanger-icon-btn:hover { background: var(--accent-soft); }
.fontchanger-copy-button:hover { color: var(--accent-text); }
.fontchanger-favourite-btn:hover, .fontchanger-favourite-btn.fontchanger-faved { color: var(--heart); }
.fontchanger-icon-btn svg, .fontchanger-icon-copy, .fontchanger-icon-check { width: 17px; height: 17px; fill: currentColor; }

/* ---------- load more ---------- */
.fontchanger-load-more-wrap { margin: 18px 0 8px; text-align: center; }
.fontchanger-load-more-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 12px 28px; border-radius: 999px;
  background: var(--grad); color: #fff;
  font-weight: 700; font-size: 15px;
  box-shadow: 0 8px 20px -8px var(--ring);
  transition: filter .15s, box-shadow .15s;
}
.fontchanger-load-more-btn:hover { filter: brightness(1.08); }
.fontchanger-load-more-btn svg { width: 18px; height: 18px; }

/* ---------- loading skeleton ---------- */
.fontchanger-page-load-status { margin-top: 14px; }
.fontchanger-infinite-scroll-request { display: flex; flex-direction: column; align-items: center; gap: 14px; }
.fontchanger-loading-text {
  width: 100%; text-align: center; font-size: 15px; font-weight: 700;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.fontchanger-loading-text::after { content: ""; display: inline-block; width: 1.2em; text-align: left; -webkit-text-fill-color: var(--accent-text); animation: dots 1.2s steps(4) infinite; }
@keyframes dots { 0% { content: ""; } 25% { content: "."; } 50% { content: ".."; } 75% { content: "..."; } }
.fontchanger-skeleton-list { width: 100%; display: flex; flex-direction: column; gap: 10px; }
.fontchanger-skeleton-label, .fontchanger-skeleton-bar, .fontchanger-skeleton-icon {
  background: linear-gradient(90deg, var(--skeleton-a) 25%, var(--skeleton-b) 45%, var(--skeleton-a) 65%);
  background-size: 240% 100%;
  animation: shimmer 1.3s linear infinite;
}
@keyframes shimmer { to { background-position: -240% 0; } }
.fontchanger-skeleton-block { width: 100%; }
.fontchanger-skeleton-label { height: 9px; width: 64px; border-radius: 4px; margin-bottom: 5px; }
.fontchanger-skeleton-block:nth-child(2) .fontchanger-skeleton-label { width: 46px; }
.fontchanger-skeleton-block:nth-child(3) .fontchanger-skeleton-label { width: 82px; }
.fontchanger-skeleton-row { display: flex; align-items: center; justify-content: space-between; background: var(--surface); border: 1px solid var(--border-soft); border-radius: 12px; padding: 10px 12px; }
.fontchanger-skeleton-bar { flex: 1; height: 22px; border-radius: 6px; }
.fontchanger-skeleton-icons { display: flex; gap: 8px; margin-left: 12px; }
.fontchanger-skeleton-icon { width: 22px; height: 22px; border-radius: 6px; }
.fontchanger-infinite-scroll-error { text-align: center; color: var(--muted); }
.fontchanger-infinite-scroll-error a { color: var(--accent-text); text-decoration: underline; }
@keyframes pulse { 50% { opacity: .45; } }

/* ---------- content sections ---------- */
.fontchanger-panel { max-width: 60rem; margin: 40px auto 0; background: var(--surface); border: 1px solid var(--border-soft); border-radius: 20px; box-shadow: var(--shadow-sm); padding: 24px 18px; }
@media (min-width: 640px) { .fontchanger-panel { padding: 36px 32px; } }
.fontchanger-panel > * + * { margin-top: 28px; }
.fontchanger-section-title { text-align: center; font-size: 21px; font-weight: 800; color: var(--text); }
@media (min-width: 640px) { .fontchanger-section-title { font-size: 25px; } }
.fontchanger-section-sub { text-align: center; color: var(--text-soft); max-width: 46rem; margin-left: auto; margin-right: auto; }
.fontchanger-about-title { font-size: 24px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; margin-bottom: 14px; }
@media (min-width: 640px) { .fontchanger-about-title { font-size: 30px; } }

.fontchanger-tool-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.fontchanger-tool-link { padding: 6px 14px; background: var(--surface-2); color: var(--text-soft); border-radius: 999px; font-size: 12px; font-weight: 600; white-space: nowrap; transition: background-color .15s, color .15s; }
.fontchanger-tool-link:hover { background: var(--accent-soft-2); color: var(--accent-text); }
.fontchanger-letter-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.fontchanger-letter-link {
  display: flex; align-items: center; justify-content: center;
  min-width: 44px; min-height: 44px; padding: 6px 12px;
  border: 1px solid var(--border); border-radius: 12px;
  color: var(--accent-text); font-weight: 700;
  transition: background-color .15s, border-color .15s;
}
.fontchanger-letter-link:hover { background: var(--accent-soft); border-color: var(--accent); }

.fontchanger-img-center { display: flex; justify-content: center; }
.fontchanger-img-narrow { width: 100%; }
@media (min-width: 640px) { .fontchanger-img-narrow { width: 60%; } }
.fontchanger-img-wide { width: 100%; margin: 16px 0; }
.fontchanger-img-rounded, .fontchanger-img-fluid { border-radius: 16px; width: 100%; height: auto; box-shadow: var(--shadow-md); }

.fontchanger-feature-grid { display: grid; grid-template-columns: 1fr; gap: 14px; }
@media (min-width: 768px) { .fontchanger-feature-grid { grid-template-columns: repeat(3, 1fr); } }
.fontchanger-feature-card { background: var(--accent-soft); border: 1px solid var(--border-soft); border-radius: 16px; padding: 20px; text-align: center; }
.fontchanger-feature-card h3 { font-size: 16px; font-weight: 700; color: var(--accent-text); margin-bottom: 6px; }
.fontchanger-feature-card p { font-size: 13px; color: var(--text-soft); }

.fontchanger-article { max-width: 46rem; margin: 0 auto; color: var(--text-soft); }
.fontchanger-article h2, .fontchanger-article h3 { color: var(--text); font-weight: 700; margin: 30px 0 10px; }
.fontchanger-article h2 { font-size: 20px; }
.fontchanger-article h3 { font-size: 17px; }
.fontchanger-article p { margin-bottom: 14px; }
.fontchanger-article ul, .fontchanger-article ol { padding-left: 22px; margin-bottom: 14px; }
.fontchanger-article ul { list-style: disc; }
.fontchanger-article ol { list-style: decimal; }
.fontchanger-article li { margin-bottom: 6px; }
.fontchanger-article strong { color: var(--text); }
.fontchanger-two-col-list { display: grid; grid-template-columns: 1fr; gap: 10px; list-style: none !important; padding-left: 0 !important; }
@media (min-width: 640px) { .fontchanger-two-col-list { grid-template-columns: 1fr 1fr; } }
.fontchanger-style-tile { background: var(--bg); border: 1px solid var(--border-soft); border-radius: 12px; padding: 12px 14px; margin-bottom: 0 !important; }

.fontchanger-promo-grid { max-width: 60rem; margin: 40px auto 0; display: grid; grid-template-columns: 1fr; gap: 14px; }
@media (min-width: 768px) { .fontchanger-promo-grid { grid-template-columns: repeat(3, 1fr); } }
.fontchanger-promo-card { padding: 22px; color: #fff; border-radius: 18px; box-shadow: var(--shadow-lg); }
.fontchanger-promo-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 6px; }
.fontchanger-promo-card p { font-size: 14px; opacity: .92; }
.fontchanger-promo-1 { background: linear-gradient(135deg, #7c3aed, #db2777); }
.fontchanger-promo-2 { background: linear-gradient(135deg, #d946ef, #f59e0b); }
.fontchanger-promo-3 { background: linear-gradient(135deg, #8b5cf6, #0ea5e9); }

.fontchanger-faq-section { max-width: 60rem; margin: 48px auto 0; }
.fontchanger-faq-section > h3 { font-size: 21px; font-weight: 800; margin-bottom: 18px; }
.fontchanger-faq-list { display: flex; flex-direction: column; gap: 10px; }
.fontchanger-faq-item { background: var(--surface); border: 1px solid var(--border-soft); border-radius: 14px; padding: 15px 16px; }
.fontchanger-faq-item summary { font-weight: 600; color: var(--text); cursor: pointer; }
.fontchanger-faq-item summary::marker { color: var(--accent-text); }
.fontchanger-faq-item p { margin-top: 8px; color: var(--text-soft); font-size: 14px; }

/* ---------- footer & floating ---------- */
.fontchanger-site-footer { text-align: center; font-size: 13px; color: var(--muted); margin: 40px 0 20px; }
.fontchanger-site-footer a:hover { color: var(--accent-text); }
.fontchanger-credit { font-size: 11px; color: var(--muted); }
.fontchanger-back-to-top {
  position: fixed; bottom: 20px; right: 16px; z-index: 60;
  display: flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 999px;
  background: var(--grad); color: #fff;
  box-shadow: var(--shadow-lg);
  transition: filter .15s;
}
.fontchanger-back-to-top:hover { filter: brightness(1.08); }
.fontchanger-back-to-top svg { width: 20px; height: 20px; }
.fontchanger-toast {
  position: fixed; bottom: 80px; right: 16px; z-index: 70;
  max-width: min(320px, 82vw);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  background: var(--grad); color: #fff;
  font-size: 13px; font-weight: 600; padding: 9px 16px; border-radius: 999px;
  box-shadow: var(--shadow-lg);
}
.fontchanger-fav-popup {
  position: fixed; bottom: 80px; right: 16px; z-index: 60;
  background: var(--grad); color: #fff;
  font-size: 13px; font-weight: 600; padding: 9px 16px; border-radius: 999px;
  box-shadow: var(--shadow-lg);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, ::before, ::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

.fontchanger-next-page { display: none; }