/* =========================================================================
   RequestMe — Components
   ========================================================================= */

/* ---- Buttons -------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 44px;
  padding-inline: var(--space-5);
  border-radius: var(--radius-s);
  font-size: var(--text-body-s);
  font-weight: 600;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: background-color var(--duration-fast) var(--ease-standard),
              border-color var(--duration-fast) var(--ease-standard),
              color var(--duration-fast) var(--ease-standard),
              transform var(--duration-fast) var(--ease-standard);
}
.btn:active { transform: translateY(1px); }
.btn-lg { height: 48px; padding-inline: var(--space-6); font-size: var(--text-body); }
.btn-sm { height: 36px; padding-inline: var(--space-4); font-size: var(--text-caption); }
.btn-block { width: 100%; }

.btn-primary { background: var(--action-primary); color: var(--text-on-brand); }
.btn-primary:hover { background: var(--action-primary-hover); }

.btn-ghost { background: transparent; color: var(--text-primary); border-color: var(--border-strong); }
.btn-ghost:hover { background: var(--bg-hover); border-color: var(--text-tertiary); }

.btn-quiet { background: transparent; color: var(--text-primary); }
.btn-quiet:hover { background: var(--bg-hover); }

.btn-on-dark { background: var(--text-inverse); color: var(--grey-950); }
.btn-on-dark:hover { background: var(--brand-100); }
.btn-ghost-on-dark { background: transparent; color: var(--text-inverse); border-color: var(--border-inverse); }
.btn-ghost-on-dark:hover { background: rgba(255,255,255,0.06); }

.btn-telegram { background: #229ed9; color: #fff; }
.btn-telegram:hover { background: #1c86ba; }

.btn-icon { width: 40px; height: 40px; padding: 0; border-radius: var(--radius-s); }

/* ---- Icon (inline SVG sizing helpers) -------------------------------------- */
.icon { width: 20px; height: 20px; flex-shrink: 0; stroke: currentColor; fill: none; stroke-width: 1.6; }
.icon-lg { width: 24px; height: 24px; }
.icon-sm { width: 16px; height: 16px; }

/* ---- Navigation ------------------------------------------------------------ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  height: var(--nav-height);
  display: flex; align-items: center;
  background: color-mix(in srgb, var(--bg-page) 82%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-base) var(--ease-standard), background-color var(--duration-base);
}
.site-header.is-scrolled { border-bottom-color: var(--border-hairline); }

.nav-row { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.brand { display: flex; align-items: center; gap: var(--space-3); font-weight: 600; font-size: var(--text-heading-m); }
.brand img { width: 32px; height: 32px; border-radius: 8px; }

.nav-links { display: flex; align-items: center; gap: var(--space-8); }
.nav-links a {
  font-size: var(--text-body-s); font-weight: 500; color: var(--text-secondary);
  transition: color var(--duration-fast);
  position: relative;
}
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text-primary); }
.nav-links a[aria-current="page"]::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -22px; height: 2px; background: var(--action-primary);
}

.nav-actions { display: flex; align-items: center; gap: var(--space-3); }
.theme-toggle {
  width: 40px; height: 40px; border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-hairline); color: var(--text-secondary);
}
.theme-toggle:hover { background: var(--bg-hover); color: var(--text-primary); }
.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: block; }
}

.nav-toggle { display: none; }

@media (max-width: 900px) {
  .nav-links { position: fixed; inset: var(--nav-height) 0 0 0; background: var(--bg-page);
    flex-direction: column; align-items: stretch; padding: var(--space-6); gap: 0;
    transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: opacity var(--duration-base) var(--ease-standard), transform var(--duration-base) var(--ease-standard);
    overflow-y: auto;
  }
  .nav-links a { padding-block: var(--space-4); border-bottom: 1px solid var(--border-hairline); font-size: var(--text-body-l); }
  .nav-links a[aria-current="page"]::after { display: none; }
  .nav-links.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links .nav-mobile-cta { display: flex; flex-direction: column; gap: var(--space-3); padding-top: var(--space-6); border-bottom: none; }
  .nav-toggle { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; }
  .nav-actions .btn-ghost.nav-desktop-only, .nav-actions .btn-primary.nav-desktop-only { display: none; }
}
@media (min-width: 901px) {
  .nav-mobile-cta { display: none; }
}

/* ---- Sticky mobile CTA bar -------------------------------------------------- */
.mobile-cta-bar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 90;
  display: none; gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  padding-bottom: max(var(--space-3), env(safe-area-inset-bottom));
  background: var(--bg-page);
  border-top: 1px solid var(--border-hairline);
  transform: translateY(100%);
  transition: transform var(--duration-base) var(--ease-standard);
}
.mobile-cta-bar.is-visible { transform: translateY(0); }
@media (max-width: 720px) { .mobile-cta-bar { display: flex; } }

/* ---- Footer ----------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--border-hairline); background: var(--bg-subtle); padding-block: var(--space-16) var(--space-8); }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: var(--space-8); }
.footer-brand p { color: var(--text-secondary); max-width: 32ch; margin-top: var(--space-4); }
.footer-col h4 { font-size: var(--text-caption); text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-tertiary); margin-bottom: var(--space-4); }
.footer-col ul { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-col a { color: var(--text-secondary); font-size: var(--text-body-s); }
.footer-col a:hover { color: var(--text-primary); }
.footer-bottom {
  margin-top: var(--space-12); padding-top: var(--space-6); border-top: 1px solid var(--border-hairline);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--space-4);
  color: var(--text-tertiary); font-size: var(--text-caption);
}
.lang-switch { display: flex; gap: var(--space-2); align-items: center; }
.lang-switch button { font-size: var(--text-caption); color: var(--text-tertiary); padding: var(--space-1) var(--space-2); border-radius: var(--radius-s); }
.lang-switch button[aria-current="true"] { color: var(--text-primary); background: var(--bg-hover); font-weight: 600; }

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; margin-bottom: var(--space-4); }
}

/* ---- Cards -------------------------------------------------------------------- */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-m);
  padding: var(--space-6);
}
.card-interactive { transition: border-color var(--duration-fast), transform var(--duration-fast); }
.card-interactive:hover { border-color: var(--border-strong); transform: translateY(-2px); }

.icon-tile {
  width: 44px; height: 44px; border-radius: var(--radius-s);
  display: flex; align-items: center; justify-content: center;
  background: var(--action-primary-tint); color: var(--action-primary);
  margin-bottom: var(--space-4);
}

/* ---- Status pill (colour + word, never colour alone) --------------------------- */
.status-pill {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-caption); font-weight: 600;
}
.status-pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.status-waiting  { color: var(--status-waiting-fg);  background: var(--status-waiting-bg); }
.status-approved { color: var(--status-approved-fg); background: var(--status-approved-bg); }
.status-rejected { color: var(--status-rejected-fg); background: var(--status-rejected-bg); }
.status-returned { color: var(--status-returned-fg); background: var(--status-returned-bg); }
.status-draft    { color: var(--status-draft-fg);    background: var(--status-draft-bg); }

/* ---- The signature line — RequestMe's core visual motif ------------------------ */
.signature-line { padding-top: var(--space-4); border-top: 1px solid var(--border-strong); }
.signature-line + .signature-line { margin-top: var(--space-5); }
.signature-line .sig-name { font-weight: 600; font-size: var(--text-body); display: flex; align-items: center; gap: var(--space-2); }
.signature-line .sig-role { color: var(--text-secondary); font-size: var(--text-body-s); margin-top: 2px; }
.signature-line .sig-reason { color: var(--brass-600); font-size: var(--text-caption); margin-top: var(--space-2); font-weight: 500; }
.avatar { width: 28px; height: 28px; border-radius: 50%; background: var(--action-primary-tint); color: var(--action-primary); display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; flex-shrink: 0; }
.signature-line.is-pending { opacity: 0.45; }
.signature-line.is-signed .sig-name::after {
  content: "✓ signed"; margin-left: auto; font-size: var(--text-caption); font-weight: 600; color: var(--status-approved-fg);
  background: var(--status-approved-bg); padding: 2px 8px; border-radius: var(--radius-full);
}

/* ---- Document / preview mockup card -------------------------------------------- */
.doc-mock {
  background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-l);
  padding: var(--space-8); box-shadow: var(--shadow-elevated);
}
.doc-mock-head { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--space-4); margin-bottom: var(--space-6); padding-bottom: var(--space-6); border-bottom: 1px solid var(--border-hairline); }
.doc-mock-title { font-family: var(--font-serif); font-size: var(--text-heading-l); font-weight: 500; }
.doc-mock-field { display: flex; justify-content: space-between; padding-block: var(--space-2); font-size: var(--text-body-s); border-bottom: 1px dashed var(--border-hairline); }
.doc-mock-field dt { color: var(--text-secondary); }
.doc-mock-field dd { font-weight: 600; }
.doc-mock-amount { font-family: var(--font-serif); font-size: var(--text-heading-l); }

/* ---- Browser / phone chrome frames --------------------------------------------- */
.browser-frame {
  border-radius: var(--radius-l); overflow: hidden; border: 1px solid var(--card-border);
  background: var(--card-bg); box-shadow: var(--shadow-elevated);
}
.browser-chrome { display: flex; align-items: center; gap: var(--space-2); padding: var(--space-3) var(--space-4); background: var(--bg-fill); border-bottom: 1px solid var(--border-hairline); }
.browser-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--border-strong); }
.browser-chrome .url-pill { margin-inline: auto; background: var(--bg-page); border: 1px solid var(--border-hairline); border-radius: var(--radius-full); padding: 4px 16px; font-size: var(--text-caption); color: var(--text-tertiary); }
.browser-body { padding: var(--space-6); }

.phone-frame {
  width: 300px; border-radius: 36px; border: 8px solid var(--grey-900); background: var(--grey-900);
  box-shadow: var(--shadow-elevated); overflow: hidden;
}
:root[data-theme="dark"] .phone-frame, @media (prefers-color-scheme: dark) { }
.phone-notch { height: 22px; background: var(--grey-900); display: flex; align-items: center; justify-content: center; }
.phone-notch::before { content: ""; width: 70px; height: 8px; border-radius: var(--radius-full); background: #000; }
.phone-screen { background: var(--card-bg); min-height: 480px; padding: var(--space-4); }

/* ---- Tabs ------------------------------------------------------------------------ */
.tabs { display: inline-flex; gap: var(--space-1); padding: 4px; background: var(--bg-fill); border-radius: var(--radius-m); }
.tabs button {
  padding: var(--space-2) var(--space-5); border-radius: var(--radius-s); font-size: var(--text-body-s); font-weight: 600; color: var(--text-secondary);
  transition: background-color var(--duration-fast), color var(--duration-fast);
}
.tabs button[aria-selected="true"] { background: var(--card-bg); color: var(--text-primary); box-shadow: var(--shadow-soft); }
.tab-panel[hidden] { display: none; }

/* ---- Chip selector (request types) ------------------------------------------------ */
.chip-row { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.chip {
  padding: var(--space-2) var(--space-4); border-radius: var(--radius-full); border: 1px solid var(--border-hairline);
  font-size: var(--text-body-s); font-weight: 600; color: var(--text-secondary);
}
.chip[aria-selected="true"] { background: var(--action-primary); border-color: var(--action-primary); color: #fff; }

/* ---- Accordion (FAQ) ---------------------------------------------------------------- */
.accordion-item { border-bottom: 1px solid var(--border-hairline); }
.accordion-trigger {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: var(--space-4);
  padding-block: var(--space-5); text-align: left; font-size: var(--text-body-l); font-weight: 600;
}
.accordion-trigger .icon { transition: transform var(--duration-base) var(--ease-standard); color: var(--text-tertiary); transform: rotate(90deg); }
.accordion-trigger[aria-expanded="true"] .icon { transform: rotate(270deg); }
.accordion-panel { overflow: hidden; max-height: 0; transition: max-height var(--duration-base) var(--ease-standard); }
.accordion-panel-inner { padding-bottom: var(--space-5); color: var(--text-secondary); max-width: 68ch; }

/* ---- Pricing --------------------------------------------------------------------------- */
.billing-switch { display: inline-flex; align-items: center; gap: var(--space-3); padding: var(--space-2) var(--space-2); }
.switch { position: relative; width: 44px; height: 26px; border-radius: var(--radius-full); background: var(--border-strong); flex-shrink: 0; }
.switch::after { content: ""; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: #fff; transition: transform var(--duration-fast); }
.switch[aria-checked="true"] { background: var(--action-primary); }
.switch[aria-checked="true"]::after { transform: translateX(18px); }
.save-badge { font-size: var(--text-caption); font-weight: 700; color: var(--status-approved-fg); background: var(--status-approved-bg); padding: 2px 8px; border-radius: var(--radius-full); }

.pricing-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); align-items: stretch; }
.plan-card { display: flex; flex-direction: column; padding: var(--space-6); border-radius: var(--radius-l); border: 1px solid var(--card-border); background: var(--card-bg); }
.plan-card.is-featured { border-color: var(--action-primary); box-shadow: 0 0 0 1px var(--action-primary), var(--shadow-elevated); position: relative; }
.plan-featured-tag { position: absolute; top: -13px; left: var(--space-6); background: var(--action-primary); color: #fff; font-size: var(--text-caption); font-weight: 700; padding: 3px 12px; border-radius: var(--radius-full); }
.plan-name { font-weight: 600; font-size: var(--text-heading-m); }
.plan-audience { color: var(--text-secondary); font-size: var(--text-body-s); margin-top: var(--space-2); min-height: 40px; }
.plan-price { display: flex; align-items: baseline; gap: var(--space-1); margin-block: var(--space-5); font-family: var(--font-serif); }
.plan-price .amount { font-size: 2.5rem; }
.plan-price .period { color: var(--text-tertiary); font-size: var(--text-body-s); font-family: var(--font-sans); }
.plan-users { font-size: var(--text-caption); color: var(--text-tertiary); margin-top: -12px; margin-bottom: var(--space-5); }
.plan-features { display: flex; flex-direction: column; gap: var(--space-3); margin-block: var(--space-6); flex: 1; }
.plan-features li { display: flex; gap: var(--space-2); font-size: var(--text-body-s); align-items: flex-start; }
.plan-features .icon { color: var(--action-primary); margin-top: 2px; }

@media (max-width: 1100px) { .pricing-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .pricing-grid { grid-template-columns: 1fr; } }

/* ---- Stat tiles ------------------------------------------------------------------------- */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
.stat-tile .stat-value { font-family: var(--font-serif); font-size: var(--text-display-m); }
.stat-tile .stat-label { color: var(--text-secondary); font-size: var(--text-body-s); margin-top: var(--space-1); }
@media (max-width: 720px) { .stat-row { grid-template-columns: 1fr 1fr; } }

/* ---- Testimonial ------------------------------------------------------------------------ */
.testimonial-card { display: flex; flex-direction: column; gap: var(--space-5); }
.testimonial-quote { font-family: var(--font-serif); font-size: var(--text-heading-m); font-weight: 500; line-height: 1.5; }
.testimonial-person { display: flex; align-items: center; gap: var(--space-3); }
.testimonial-person img { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; background: var(--bg-fill); }
.testimonial-stat { font-size: var(--text-caption); font-weight: 700; color: var(--action-primary); background: var(--action-primary-tint); padding: 3px 10px; border-radius: var(--radius-full); align-self: flex-start; }

/* ---- Forms ------------------------------------------------------------------------------- */
.field { display: flex; flex-direction: column; gap: var(--space-2); }
.field label { font-size: var(--text-body-s); font-weight: 600; }
.field .hint { font-size: var(--text-caption); color: var(--text-tertiary); }
.field input, .field select, .field textarea {
  height: 44px; padding-inline: var(--space-4); border-radius: var(--radius-s);
  border: 1px solid var(--border-strong); background: var(--bg-page); color: var(--text-primary); font-size: 16px;
}
.field textarea { height: auto; padding-block: var(--space-3); resize: vertical; min-height: 96px; font-size: var(--text-body); }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--action-primary); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
@media (max-width: 640px) { .field-row { grid-template-columns: 1fr; } }

/* ---- Misc badges / trust bar ---------------------------------------------------------------- */
.trust-bar { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.trust-item { display: flex; align-items: center; gap: var(--space-3); font-size: var(--text-body-s); color: var(--text-secondary); }
.trust-item .icon { color: var(--action-primary); }
@media (max-width: 720px) { .trust-bar { grid-template-columns: 1fr; } }

.divider { height: 1px; background: var(--border-hairline); border: none; }

.back-to-top {
  position: fixed; right: var(--space-6); bottom: var(--space-6); z-index: 80;
  width: 44px; height: 44px; border-radius: 50%; background: var(--bg-inverse); color: var(--text-inverse);
  display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-elevated);
  opacity: 0; pointer-events: none; transform: translateY(8px);
  transition: opacity var(--duration-base), transform var(--duration-base);
}
.back-to-top.is-visible { opacity: 1; pointer-events: auto; transform: translateY(0); }

/* ---- Skip link (a11y) ------------------------------------------------------------------------- */
.skip-link {
  position: absolute; left: var(--space-4); top: -60px; z-index: 200;
  background: var(--action-primary); color: #fff; padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-s); transition: top var(--duration-fast);
}
.skip-link:focus { top: var(--space-4); }