/* ============================================================
   Matt // Classified — styles.css
   Design tokens → reset → layout → components
   No external CDN. No inline scripts. CSP: script-src 'self'.
   ============================================================ */

/* ---- Design tokens ---------------------------------------- */
:root {
  --bg:            #1f1f1e;
  --bg-elevated:   #2a2a29;
  --bg-subtle:     #333332;
  --accent:        #2f8f6f;
  --accent-hover:  #36a380;
  --accent-muted:  #1e5a46;
  --text:          #f2f2f0;
  --text-muted:    #9a9a98;
  --text-faint:    #6b6b6a;
  --danger:        #c05050;
  --radius-sm:     6px;
  --radius-md:     10px;
  --radius-lg:     14px;
  --shadow-float:  0 4px 12px rgba(0,0,0,0.35);
  --font:          -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono:     ui-monospace, "SF Mono", Menlo, monospace;

  /* Spec-requested shadow variants */
  --shadow-card:    0 2px 8px rgba(0,0,0,0.25), 0 8px 24px rgba(0,0,0,0.15);
  --shadow-fab:     0 4px 16px rgba(0,0,0,0.4),  0 2px 4px  rgba(0,0,0,0.3);
  --shadow-primary: 0 4px 12px rgba(47,143,111,0.3), 0 2px 4px rgba(0,0,0,0.2);
}

/* ---- Reset ------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  height: 100%;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(47,143,111,0.06) 0%, transparent 70%),
    radial-gradient(ellipse at top, #2a2a29 0%, #1f1f1e 60%),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='22' height='22'><circle cx='4' cy='4' r='4' fill='%23ffffff' fill-opacity='0.15'/></svg>");
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

a { color: inherit; }

/* ---- Layout ----------------------------------------------- */
.page-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
  padding: 0 16px;
}

@media (min-width: 600px) {
  .container { padding: 0 24px; }
}

/* ---- Header ----------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 56px;
  background: var(--bg);
  border-bottom: 1px solid var(--bg-subtle);
}

.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  font-size: 18px;
  font-weight: 500;
  text-decoration: none;
  user-select: none;
}

.site-logo .logo-matt    { color: var(--text); }
.site-logo .logo-slash   { color: var(--accent); }

/* Help button — "Почему это безопасно" + ? в шапке */
.help-btn-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 0;
  transition: opacity 0.15s;
}

.help-btn-wrap:hover  { opacity: 0.8; }
.help-btn-wrap:focus-visible { outline: 2px solid var(--accent); border-radius: var(--radius-sm); outline-offset: 2px; }

.help-btn-label {
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
  transition: color 0.15s;
}

.help-btn-wrap:hover .help-btn-label { color: var(--text); }

.help-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--bg-subtle);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  transition: border-color 0.15s, color 0.15s;
  flex-shrink: 0;
  /* standalone fallback (view page) */
  background: none;
  cursor: pointer;
}

.help-btn:hover,
.help-btn:focus-visible {
  border-color: var(--text-muted);
  color: var(--text);
  outline: none;
}

.help-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.help-btn-wrap:focus-visible .help-btn { border-color: var(--accent); color: var(--text); }

/* ---- Main content ----------------------------------------- */
.main-content {
  flex: 1;
  padding: 24px 0 32px;
}

/* ---- Footer ----------------------------------------------- */
.site-footer {
  padding: 24px 16px;
  font-size: 13px;
  color: var(--text-faint);
  margin-top: auto;
  border-top: 1px solid var(--bg-subtle);
}

.footer-inner {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}

.footer-links {
  display: flex;
  gap: 16px;
}

.footer-links a {
  color: var(--text-faint);
  text-decoration: none;
  transition: color 0.15s;
}

.footer-links a:hover { color: var(--text-muted); }

@media (min-width: 600px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* ---- Cards / elevated containers -------------------------- */
.card {
  background: var(--bg-elevated);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.04);
  box-shadow: var(--shadow-card);
}

/* ---- Textarea wrapper ------------------------------------- */
.textarea-wrapper {
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.04);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

/* textarea-header удалена — inline-ссылка убрана из дизайна */

#note-textarea {
  display: block;
  width: 100%;
  /*
   * Mobile keyboard fix: используем фиксированную высоту вместо 100vh,
   * чтобы textarea не прыгала при открытии виртуальной клавиатуры.
   * Кнопки (fixed) перемещаются сами, т.к. они position:fixed.
   */
  min-height: 320px;
  height: 320px;
  padding: 16px;
  background: transparent;
  border: none;
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  resize: none;
  outline: none;
  caret-color: var(--accent);
  /* Не привязываем высоту к viewport — клавиатура его меняет */
}

#note-textarea::placeholder { color: var(--text-faint); }

@media (min-width: 600px) {
  #note-textarea {
    min-height: 400px;
    height: auto;
    resize: vertical;
  }
}

.char-counter {
  font-size: 12px;
  color: var(--text-faint);
  text-align: right;
  padding: 6px 16px 12px;
  user-select: none;
}

.char-counter.over-limit { color: var(--danger); }

/* ---- Action bar (под textarea) ---------------------------- */
/*
 * Больше не floating — располагается в потоке документа
 * прямо под полем ввода, в том же контейнере.
 */
.fab-group {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 8px;
  padding: 12px 0 0;
}

.fab-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.fab {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 1px solid var(--bg-subtle);
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  flex-shrink: 0;
}

.fab:hover,
.fab:focus-visible {
  background: var(--bg-subtle);
  outline: none;
}

.fab:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.fab.active {
  border-color: var(--accent);
  color: var(--accent);
}

.fab-badge {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg-subtle);
  border-radius: 999px;
  padding: 3px 8px;
  white-space: nowrap;
  user-select: none;
  line-height: 1.4;
}

/* Разделитель между FABs и кнопкой «создать» */
.fab-spacer {
  flex: 1;
}

/* ---- Primary create button -------------------------------- */
.btn-create {
  /* В потоке, справа от FABs через fab-spacer */
  padding: 10px 18px;
  background: var(--accent);
  color: #fff;
  font-weight: 500;
  font-size: 14px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-primary);
  transition: background 0.15s, box-shadow 0.15s, opacity 0.15s;
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-create:hover:not(:disabled) {
  background: var(--accent-hover);
  box-shadow: 0 6px 16px rgba(47,143,111,0.4), 0 2px 4px rgba(0,0,0,0.25);
}

.btn-create:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.btn-create:disabled {
  background: var(--accent-muted);
  cursor: not-allowed;
  box-shadow: none;
  opacity: 0.6;
}

/* ---- Generic buttons -------------------------------------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  background: var(--accent);
  color: #fff;
  font-weight: 500;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-primary);
  transition: background 0.15s, box-shadow 0.15s;
  text-decoration: none;
  cursor: pointer;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  background: var(--bg-elevated);
  color: var(--text);
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid var(--bg-subtle);
  transition: background 0.15s, border-color 0.15s;
  text-decoration: none;
  cursor: pointer;
}

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-subtle);
}

.btn-secondary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ---- Spinner ---------------------------------------------- */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  flex-shrink: 0;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Result card ------------------------------------------ */
.result-section { display: flex; flex-direction: column; gap: 16px; }

.result-title {
  font-size: 20px;
  font-weight: 500;
  color: var(--text);
  text-align: center;
  width: 100%;
}

.warning-box {
  background: var(--bg-elevated);
  border: 1px solid var(--accent-muted);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  box-shadow: var(--shadow-card);
}

.warning-box strong { color: var(--text); }

.link-box {
  background: var(--bg-subtle);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.04);
  padding: 16px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.link-url {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  word-break: break-all;
  line-height: 1.5;
  user-select: all;
}

.result-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

@media (min-width: 480px) {
  .result-actions {
    flex-direction: row;
    gap: 12px;
  }

  .result-actions .btn-primary,
  .result-actions .btn-secondary {
    flex: 1;
  }
}

/* ---- Error inline ----------------------------------------- */
.inline-error {
  font-size: 14px;
  color: var(--danger);
  padding: 8px 0;
}

/* ---- View page: initial card ------------------------------ */
.view-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
  padding: 40px 24px;
}

.view-card .icon-lock,
.view-card .icon-empty {
  color: var(--text-muted);
  width: 48px;
  height: 48px;
}

.view-card-title {
  font-size: 18px;
  font-weight: 500;
}

.view-card-body {
  font-size: 14px;
  color: var(--text-muted);
  max-width: 420px;
  line-height: 1.6;
}

.view-card-hint {
  font-size: 13px;
  color: var(--text-faint);
  max-width: 420px;
  line-height: 1.5;
}

/* ---- Note content block ----------------------------------- */
.note-content-block {
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.04);
  padding: 16px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.note-text {
  font-size: 16px;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.6;
}

/* ---- Password prompt -------------------------------------- */
.password-prompt {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 400px;
  margin: 0 auto;
  width: 100%;
}

.password-prompt-title {
  font-size: 16px;
  font-weight: 500;
  text-align: center;
}

.input-field {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-elevated);
  border: 1px solid var(--bg-subtle);
  border-radius: var(--radius-md);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  outline: none;
  transition: border-color 0.15s;
}

.input-field::placeholder { color: var(--text-faint); }

.input-field:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(47,143,111,0.15);
}

/* ---- Overlay + Modal -------------------------------------- */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 400;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: flex-end;  /* bottom sheet default on mobile */
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.overlay.open {
  opacity: 1;
  pointer-events: auto;
}

/* Bottom sheet (mobile) */
.sheet {
  background: var(--bg-elevated);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  padding: 20px;
  width: 100%;
  max-width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(100%);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.overlay.open .sheet {
  transform: translateY(0);
}

/* Desktop: centered modal */
@media (min-width: 600px) {
  .overlay { align-items: center; }

  .sheet {
    border-radius: var(--radius-lg);
    max-width: 560px;
    transform: scale(0.98);
    transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s;
    opacity: 0;
  }

  .overlay.open .sheet {
    transform: scale(1);
    opacity: 1;
  }
}

/* Handle bar */
.sheet-handle {
  width: 40px;
  height: 4px;
  background: var(--bg-subtle);
  border-radius: 999px;
  margin: 0 auto 16px;
}

@media (min-width: 600px) {
  .sheet-handle { display: none; }
}

/* Sheet header */
.sheet-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.sheet-title {
  font-size: 17px;
  font-weight: 600;
}

.sheet-close {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-subtle);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
}

.sheet-close:hover { background: var(--bg-subtle); color: var(--text); }
.sheet-close:focus-visible { outline: 2px solid var(--accent); }

/* ---- TTL sheet -------------------------------------------- */
.ttl-options {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ttl-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 8px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background 0.12s;
  font-size: 15px;
}

.ttl-option:hover { background: var(--bg-subtle); }

.ttl-option input[type="radio"] {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border: 2px solid var(--bg-subtle);
  border-radius: 50%;
  flex-shrink: 0;
  position: relative;
  transition: border-color 0.15s;
  cursor: pointer;
}

.ttl-option input[type="radio"]:checked {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: inset 0 0 0 3px var(--bg-elevated);
}

.ttl-option input[type="radio"]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---- Password sheet --------------------------------------- */
.password-sheet-fields {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.btn-remove-password {
  display: block;
  width: 100%;
  text-align: center;
  padding: 10px;
  font-size: 14px;
  color: var(--danger);
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background 0.15s;
}

.btn-remove-password:hover { background: rgba(192,80,80,0.08); }
.btn-remove-password:focus-visible { outline: 2px solid var(--danger); }

/* ---- Safety modal content --------------------------------- */
.safety-content {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-muted);
}

.safety-content h2 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
}

.safety-content h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin: 16px 0 8px;
}

.safety-content ol {
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.safety-content p { margin-bottom: 8px; }

.safety-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.safety-content code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--bg-subtle);
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  color: var(--text);
}

/* ---- Fade transition for state changes -------------------- */
.fade-out {
  opacity: 0;
  transition: opacity 0.15s ease;
  pointer-events: none;
}

.fade-in {
  animation: fadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---- Utility ---------------------------------------------- */
.visually-hidden {
  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 global */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}