/* ────────────────────────────────────────────────────────────
   2FA Gen — Stylesheet
   Light theme, responsive, accessible, two-column card layout
   ──────────────────────────────────────────────────────────── */

/* ── Hidden attribute override ───────────────────────────── */
[hidden] { display: none !important; }

/* ── Tokens ─────────────────────────────────────────────── */
:root {
  --bg:         #f8fafc;
  --bg-surface: #ffffff;
  --bg-hover:   #f1f5f9;
  --border:     #e2e8f0;
  --text:       #1e293b;
  --text-sec:   #64748b;
  --accent:     #0891b2;
  --accent-hover:#0e7490;
  --accent-bg:  #ecfeff;
  --success:    #059669;
  --success-bg: rgba(5, 150, 105, 0.08);
  --warning:    #d97706;
  --error:      #dc2626;
  --error-bg:   #fef2f2;
  --ring-bg:    #e2e8f0;
  --nav-bg:     rgba(248,250,252,0.92);
  --shadow:     0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-lg:  0 4px 16px rgba(0,0,0,0.08);
  --radius:     12px;
  --radius-sm:  8px;
  --font:       system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono:       'SF Mono', ui-monospace, 'Cascadia Code', 'Fira Code', Menlo, monospace;
}

/* ── Reset & Base ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }
h1, h2, h3, h4 { margin: 0 0 0.5em; line-height: 1.3; }

/* ── Layout ──────────────────────────────────────────────── */
.container { max-width: 900px; margin: 0 auto; padding: 0 1.25rem; }
.container-wide { max-width: 1100px; margin: 0 auto; padding: 0 1.25rem; }
/* The tool gets its own wider track — .container's 900px cap was clamping the card */
.container-tool { max-width: 1060px; margin: 0 auto; padding: 0 1.25rem; }

/* ── Nav ─────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  text-decoration: none;
}
.nav-brand:hover { color: var(--accent); text-decoration: none; }
.nav-logo { width: 32px; height: 32px; display: block; flex: none; }
.brand-accent { color: var(--accent); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  color: var(--text-sec);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.15s;
}
.nav-links a:hover, .nav-links a[aria-current="page"] {
  color: var(--accent);
  text-decoration: none;
}
#nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 0.5rem;
}
@media (max-width: 768px) {
  #nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    padding: 1rem;
    gap: 0.75rem;
    box-shadow: var(--shadow-lg);
  }
  /* Hide nav menu on mobile when toggle is collapsed */
  #nav-toggle[aria-expanded="false"] ~ .nav-links { display: none; }
  .nav-links a { font-size: 1rem; }
}

/* ── Hero — compact, tool-first ──────────────────────────── */
.hero {
  padding: 2.25rem 0 0;
  text-align: center;
}
.hero h1 {
  font-size: clamp(1.4rem, 2.8vw, 1.9rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
}
.hero h1 .accent { color: var(--accent); }

.trust-badges {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin: 0 0 1.75rem;
  flex-wrap: wrap;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: var(--text-sec);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
}
.badge-icon { font-size: 1rem; }

/* ═══════════════════════════════════════════════════════════
   TOOL CARD — Two-Column Layout
   ═══════════════════════════════════════════════════════════ */
.tool-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 3.25rem 3.5rem;
  margin: 1.5rem auto 3rem;
  max-width: 1000px;
  box-shadow:
    0 1px 2px rgba(15, 23, 42, 0.04),
    0 12px 32px -12px rgba(15, 23, 42, 0.12),
    0 32px 64px -32px rgba(15, 23, 42, 0.14);
}

/* Two-column grid */
.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.25rem;
  align-items: center;
}

/* Responsive: stack on narrow screens */
@media (max-width: 640px) {
  .tool-card {
    padding: 2rem 1.4rem;
    border-radius: 20px;
    margin-bottom: 2rem;
  }
  .card-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .card-right {
    padding-left: 0 !important;
    border-left: none !important;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border);
  }
}

/* ── LEFT SIDE: Input ─────────────────────────────────────── */
.input-instruction {
  font-size: 1rem;
  color: var(--text-sec);
  margin: 0 0 0.75rem;
  font-weight: 500;
}

.key-input {
  display: block;
  width: 100%;
  /* It is a <textarea> so a long key wraps and stays fully visible —
     a single-line input silently hid the tail of a 32-character key. */
  resize: none;
  overflow: hidden;
  overflow-wrap: break-word;
  word-break: break-all;
  min-height: 4.5rem;
  padding: 1.5rem 1.5rem;
  font-size: 1.3rem;
  font-family: var(--mono);
  color: var(--text);
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  line-height: 1.5;
  letter-spacing: 0.02em;
}
.key-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-bg);
}
.key-input::placeholder {
  color: var(--text-sec);
  opacity: 0.6;
  font-family: var(--font);
  letter-spacing: 0;
}
.key-input.input-invalid {
  border-color: var(--error);
  box-shadow: 0 0 0 4px var(--error-bg);
}
/* Responsive input sizing */
@media (min-width: 641px) and (max-width: 900px) {
  .key-input { font-size: 1.05rem; padding: 1.15rem 1.15rem; }
}
@media (max-width: 640px) {
  .key-input { font-size: 1.05rem; padding: 1.1rem 1.1rem; }
}

.generate-btn {
  width: 100%;
  margin-top: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1.2rem 1.25rem;
  font-size: 1.1rem;
  font-weight: 650;
  font-family: var(--font);
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 14px;
  cursor: pointer;
  transition: background 0.15s;
}
.generate-btn:hover { background: var(--accent-hover); }
.generate-btn:active { transform: scale(0.98); }

/* Inline error below input */
.input-error {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.5rem;
  font-size: 0.82rem;
  color: var(--error);
  line-height: 1.4;
}
.input-error svg { flex-shrink: 0; }

/* Non-blocking notice — the code still generates */
.input-note {
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  margin-top: 0.5rem;
  font-size: 0.82rem;
  color: var(--warning);
  line-height: 1.45;
}
.input-note svg { flex-shrink: 0; margin-top: 2px; }

/* ── RIGHT SIDE: OTP ──────────────────────────────────────── */
.card-right {
  padding-left: 3.25rem;
  border-left: 1px solid var(--border);
}

/* Clickable OTP box */
.otp-box {
  text-align: center;
  cursor: pointer;
  border-radius: 16px;
  padding: 1.35rem 1rem;
  transition: background 0.15s;
  user-select: none;
  position: relative;
}
.otp-box:hover { background: var(--accent-bg); }
.otp-box:active { transform: scale(0.98); }
.otp-box:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.otp-label {
  margin: 0 0 0.55rem;
  font-size: 0.85rem;
  color: var(--text-sec);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.otp-code {
  font-family: var(--mono);
  font-size: 4.2rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
  margin-bottom: 0.8rem;
  line-height: 1;
}
@media (max-width: 900px) {
  .otp-code { font-size: 3.4rem; }
}
@media (max-width: 640px) {
  .otp-code { font-size: 3.2rem; }
}
@media (max-width: 400px) {
  .otp-code { font-size: 2.5rem; }
}

/* Countdown ring */
.countdown-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}
.countdown-wrap {
  position: relative; width: 72px; height: 72px;
}
.countdown-svg { width: 72px; height: 72px; transform: rotate(-90deg); }
.countdown-bg { fill: none; stroke: var(--ring-bg); stroke-width: 5; }
.countdown-ring {
  fill: none;
  stroke: var(--accent);
  stroke-width: 5;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.5s linear, stroke 0.3s;
}
.countdown-ring.warn { stroke: var(--warning); }
.countdown-ring.urgent { stroke: var(--error); }
.countdown-num {
  position: absolute; inset: 0; display: flex; align-items: center;
  justify-content: center; font-size: 1.15rem; font-weight: 700; color: var(--text);
  font-variant-numeric: tabular-nums;
}

.tap-hint {
  font-size: 0.82rem; color: var(--text-sec); margin: 0;
  display: flex; align-items: center; justify-content: center; gap: 0.3rem;
}

/* Copied toast overlay */
.copy-toast {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center; gap: 0.4rem;
  background: var(--success);
  border-radius: 16px;
  color: #fff; font-weight: 700; font-size: 1.15rem;
  opacity: 0; pointer-events: none; transition: opacity 0.2s;
}
.copy-toast.show { opacity: 1; }
.copy-toast svg { flex-shrink: 0; }

/* Placeholder state */
.otp-placeholder {
  text-align: center; padding: 2.25rem 0.75rem;
  color: var(--text-sec); font-size: 1rem; line-height: 1.55;
}
.otp-placeholder .ph-icon {
  width: 72px; height: 72px; margin: 0 auto 0.9rem;
  background: var(--bg-hover); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.otp-placeholder .ph-icon svg { opacity: 0.4; width: 34px; height: 34px; }

/* ── How It Works ────────────────────────────────────────── */
.how-section {
  padding: 3rem 0;
}
.how-section h2 {
  text-align: center;
  font-size: 1.5rem;
  margin-bottom: 2rem;
}
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}
.step {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
}
.step-num {
  width: 40px; height: 40px;
  background: var(--accent-bg);
  color: var(--accent);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.75rem;
}
.step h3 { font-size: 1rem; margin-bottom: 0.4rem; }
.step p { font-size: 0.88rem; color: var(--text-sec); margin: 0; }

/* ── Content Sections ────────────────────────────────────── */
.content-section {
  padding: 2.5rem 0;
}
.content-section + .content-section {
  border-top: 1px solid var(--border);
}
.content-section h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}
.content-section h3 {
  font-size: 1.15rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}
.content-section p {
  margin: 0 0 1rem;
  color: var(--text-sec);
}
.content-section ul, .content-section ol {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
  color: var(--text-sec);
}
.content-section li { margin-bottom: 0.4rem; }
.content-section code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--bg-hover);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
}

/* ── FAQ ─────────────────────────────────────────────────── */
.faq-section { padding: 2.5rem 0; }
.faq-section h2 {
  text-align: center;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  overflow: hidden;
}
.faq-question {
  width: 100%;
  text-align: left;
  background: var(--bg-surface);
  border: none;
  padding: 1rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-family: var(--font);
  transition: background 0.15s;
}
.faq-question:hover { background: var(--bg-hover); }
.faq-question .faq-arrow {
  transition: transform 0.2s;
  font-size: 0.8rem;
  color: var(--text-sec);
}
.faq-question[aria-expanded="true"] .faq-arrow { transform: rotate(180deg); }
.faq-answer {
  padding: 0 1.25rem 1rem;
  font-size: 0.9rem;
  color: var(--text-sec);
  line-height: 1.7;
}
.faq-answer p { margin: 0 0 0.75rem; }
.faq-answer p:last-child { margin-bottom: 0; }

/* ── Footer ──────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: 2rem;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-text {
  font-size: 0.82rem;
  color: var(--text-sec);
}
.footer-links {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-links a {
  font-size: 0.82rem;
  color: var(--text-sec);
}
.footer-links a:hover { color: var(--accent); }

/* ── Article pages ───────────────────────────────────────── */
.article-hero {
  padding: 2.5rem 0 1.5rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.article-hero h1 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 800;
  margin-bottom: 0.5rem;
}
.article-hero .subtitle {
  font-size: 1.05rem;
  color: var(--text-sec);
  max-width: 600px;
  margin: 0 auto;
}
.article-body {
  padding: 2rem 0 3rem;
  max-width: 720px;
  margin: 0 auto;
}
.article-body h2 {
  font-size: 1.4rem;
  margin: 2rem 0 0.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.article-body h2:first-child {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}
.article-body h3 {
  font-size: 1.1rem;
  margin: 1.5rem 0 0.5rem;
}
.article-body p {
  margin: 0 0 1rem;
  color: var(--text-sec);
}
.article-body ul, .article-body ol {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
  color: var(--text-sec);
}
.article-body li { margin-bottom: 0.3rem; }
.article-body strong { color: var(--text); }

/* Comparison table */
.compare-table-wrap {
  overflow-x: auto;
  margin: 1rem 0 1.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.compare-table th, .compare-table td {
  padding: 0.65rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
.compare-table th {
  background: var(--bg-hover);
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}
.compare-table td { color: var(--text-sec); }
.compare-table tr:last-child td { border-bottom: none; }

/* CTA banner */
.cta-banner {
  background: var(--accent-bg);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.5rem 2rem;
  text-align: center;
  margin: 2rem 0;
}
.cta-banner p {
  margin: 0 0 1rem;
  color: var(--text);
  font-weight: 500;
}

/* ── Breadcrumbs ─────────────────────────────────────────── */
.breadcrumbs {
  padding: 0.75rem 0;
  font-size: 0.82rem;
  color: var(--text-sec);
}
.breadcrumbs a { color: var(--text-sec); }
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs .sep { margin: 0 0.4rem; }

/* ── Utilities ───────────────────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }

/* ═══════════════════════════════════════════════════════════
   HOUSE AD — self-hosted only, written in at save time.
   No third-party request is ever made for this.
   ═══════════════════════════════════════════════════════════ */
.ad-section { padding: 0 0 2.5rem; }
.house-ad {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  padding: 1.35rem 1.6rem;
  border-radius: 16px;
  text-decoration: none;
  color: var(--text);
  background: var(--accent-bg);
  border: 1px solid #a5f3fc;
  transition: transform 0.15s, box-shadow 0.15s;
}
.house-ad:hover {
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px -12px rgba(15, 23, 42, 0.18);
}
.house-ad--bordered { background: var(--bg-surface); border-color: var(--border); }
.house-ad--solid { background: var(--accent); border-color: var(--accent); color: #fff; }
.house-ad__img {
  max-width: 150px; max-height: 96px; flex: none;
  border-radius: 10px; object-fit: contain;
}
.house-ad__text { display: flex; flex-direction: column; gap: 0.22rem; min-width: 0; }
.house-ad__eyebrow {
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.09em;
  font-weight: 700; opacity: 0.72;
}
.house-ad__title { font-size: 1.12rem; font-weight: 700; line-height: 1.3; }
.house-ad__body { font-size: 0.9rem; opacity: 0.84; line-height: 1.5; }
.house-ad__cta {
  font-size: 0.86rem; font-weight: 650; margin-top: 0.35rem;
  text-decoration: underline; text-underline-offset: 3px;
}
/* Banner layout — the image IS the creative (GIF, PNG, JPG).
   No card chrome, no text beside it: it spans the column and scales down
   on narrow screens instead of being squashed into the logo slot. */
.house-ad--banner {
  display: block;
  padding: 0;
  background: none;
  border: none;
  border-radius: 0;
  text-align: center;
  line-height: 0;
}
.house-ad--banner:hover {
  transform: none;
  box-shadow: none;
  background: none;
}
.house-ad--banner .house-ad__img {
  max-width: 100%;
  max-height: none;
  width: auto;
  height: auto;
  margin: 0 auto;
  display: block;
  border-radius: 10px;
}

@media (max-width: 560px) {
  .house-ad { flex-direction: column; align-items: flex-start; text-align: left; padding: 1.15rem 1.2rem; }
  .house-ad__img { max-width: 100%; max-height: 130px; }
  .house-ad--banner { padding: 0; }
  .house-ad--banner .house-ad__img { max-height: none; }
}
@media (prefers-reduced-motion: reduce) {
  .house-ad, .house-ad:hover { transition: none; transform: none; }
}

/* ── Language picker ─────────────────────────────────────────
   Language is offered, never forced: no IP redirect, no auto-switch.
   The menu is a list of real links so it is crawlable and works
   without JavaScript once open. */
.lang-picker { position: relative; flex: none; }

.lang-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-sec);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1;
  padding: 0.45rem 0.85rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.lang-btn:hover { color: var(--accent); border-color: var(--accent); }
.lang-btn svg { flex: none; opacity: 0.75; }
.lang-btn span { white-space: nowrap; }

.lang-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  min-width: 11rem;
  list-style: none;
  margin: 0;
  padding: 0.35rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 60;
}
.lang-menu[hidden] { display: none; }
.lang-menu a {
  display: block;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.9rem;
  text-decoration: none;
  white-space: nowrap;
}
.lang-menu a:hover { background: var(--bg-hover); color: var(--accent); text-decoration: none; }
.lang-menu a[aria-current="true"] {
  color: var(--accent);
  font-weight: 600;
  background: var(--accent-bg);
}

@media (max-width: 768px) {
  /* Keep the language switch reachable even when the hamburger is closed,
     and put the hamburger last so it stays at the far right. */
  #nav-toggle { order: 3; margin-left: 0.25rem; }
  .lang-picker { order: 2; margin-left: auto; }
  .lang-btn { padding: 0.4rem 0.7rem; font-size: 0.8rem; }
  .lang-menu { right: -0.25rem; }
}
@media (max-width: 380px) {
  .lang-btn span { display: none; }   /* globe only on very narrow screens */
  .lang-btn { padding: 0.45rem; }
}