@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@200..700&display=swap');

/* ============================================================
   1. ТОКЕНЫ — единый визуальный язык с main.css
   ============================================================ */
:root {
  color-scheme: dark;

  --font: "Oswald", system-ui, sans-serif;

  --bg-panel:        rgba(0, 0, 0, .4);
  --bg-panel-hover:  rgba(0, 0, 0, .55);
  --bg-footer:       rgba(0, 0, 0, .75);
  --bg-field:        rgba(255, 255, 255, .05);
  --bg-field-hover:  rgba(255, 255, 255, .08);
  --bg-field-focus:  rgba(255, 255, 255, .10);

  --line:            rgba(255, 255, 255, .12);
  --line-hover:      rgba(255, 255, 255, .30);
  --line-field:      rgba(255, 255, 255, .22);

  --text:            #fff;
  --muted:           rgba(255, 255, 255, .75);
  --placeholder:     rgba(255, 255, 255, .40);
  --accent:          rgba(255, 215, 0, .35);
  --danger:          rgba(255, 110, 110, .40);

  --blur:            5px;
  --radius:          10px;
  --radius-sm:       8px;

  --page-pad:        clamp(1rem, 3vw, 2.5rem);
  --pad:             clamp(1.25rem, 3vw, 2rem);
  --gap:             clamp(1rem, 2.5vw, 1.5rem);
  --max-width:       1440px;

  --header-h:        clamp(60px, 10vh, 88px);
  --scroll-offset:   8.5rem;

  --speed:           .25s;
  --ease:            cubic-bezier(.22, .61, .36, 1);
}

/* ============================================================
   2. RESET / BASE
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--scroll-offset);
  scrollbar-width: none;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

html::-webkit-scrollbar { display: none; }

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  background: #0b0b0f
    url("https://i.redd.it/86yagye25g841.png")
    center / cover no-repeat fixed;
  color: var(--text);
  font-family: var(--font);
  font-weight: 400;
  line-height: 1.5;
  /* clip не создаёт scroll-container — sticky header продолжает работать */
  overflow-x: hidden;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

img, svg, video { display: block; max-width: 100%; }

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: 0;
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

:focus-visible {
  outline: 2px solid rgba(255, 255, 255, .85);
  outline-offset: 3px;
}

::selection {
  background: rgba(255, 255, 255, .25);
  color: #fff;
}

/* Blur рисуется один раз для всех стеклянных поверхностей */
.header,
.section-header,
.tool-card,
.form-container {
  -webkit-backdrop-filter: blur(var(--blur));
  backdrop-filter: blur(var(--blur));
}

/* ============================================================
   3. HEADER — mobile-first
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  left: 0;
  z-index: 1000;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  width: 100%;
  padding: .6rem var(--page-pad);
  padding-top: calc(.6rem + env(safe-area-inset-top, 0px));
  background-color: var(--bg-panel);
  border-bottom: 1px solid var(--line);
}

.header h1 {
  flex: 1 0 100%;
  min-width: 0;
  text-align: center;
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 2px;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

.header a {
  display: inline-flex;
  flex: 1 1 auto;
  min-width: 0;
}

.header button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 44px;               /* минимум для пальца */
  padding: .5rem .35rem;
  border-radius: 5px;
  font-size: .75rem;
  letter-spacing: .5px;
  text-transform: uppercase;
  transition: background-color var(--speed) var(--ease);
}

.header button::before {
  content: "";
  position: absolute;
  bottom: 10%;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: #fff;
  transition: width .3s ease, left .3s ease;
}

.header button:hover::before,
.header button:focus-visible::before {
  width: 100%;
  left: 0;
}

/* Активная вкладка.
   :target на <a> не работал — используем :has() по id секции.
   Добавь по одной строке для остальных вкладок. */
body:has(#tools:target)   .header a[href="#tools"] button,
body:has(#account:target) .header a[href="#account"] button,
.header a[aria-current="page"] button {
  background-color: rgba(255, 255, 255, .10);
}

body:has(#tools:target)   .header a[href="#tools"] button::before,
body:has(#account:target) .header a[href="#account"] button::before,
.header a[aria-current="page"] button::before {
  width: 100%;
  left: 0;
}

body:not(:has(.tool-section:target)) .header a:first-of-type button {
  background-color: rgba(255, 255, 255, .08);
}

/* ============================================================
   4. LAYOUT / CSS-ТАБЫ
   ============================================================ */
.tools-container {
  flex: 1 0 auto;
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding: var(--pad) var(--page-pad);
  padding-bottom: clamp(2rem, 5vh, 4rem);
}

.tool-section {
  display: none;
  scroll-margin-top: .5rem;
  animation: fade-in .35s var(--ease) both;
}

.tool-section:target { display: block; }

/* Первая вкладка по умолчанию */
.tool-section:first-of-type { display: block; }
.tool-section:target ~ .tool-section:first-of-type { display: none; }

/* Современный, независимый от соседних <section> вариант */
body:not(:has(.tool-section:target)) .tool-section:first-of-type {
  display: block;
}

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

/* ============================================================
   5. ЗАГОЛОВОК СЕКЦИИ
   ============================================================ */
.section-header {
  padding: var(--pad);
  margin-bottom: var(--gap);
  text-align: center;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.section-header h2 {
  margin-bottom: .5rem;
  font-size: clamp(1.5rem, 1.1rem + 2vw, 2.75rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 2px;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

.section-header p {
  font-size: clamp(.95rem, .9rem + .3vw, 1.1rem);
  font-weight: 300;
  color: var(--muted);
}

/* ============================================================
   6. СЕТКА ИНСТРУМЕНТОВ  (1 → 2 → 3 → 4 колонки)
   ============================================================ */
.tools-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
}

.tool-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 0;
  padding: var(--pad);
  text-align: center;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition:
    transform var(--speed) var(--ease),
    background-color var(--speed) var(--ease),
    border-color var(--speed) var(--ease);
}

/* Лёгкий блик при наведении */
.tool-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 -100%;
  width: 100%;
  z-index: 0;
  background: linear-gradient(90deg,
    transparent, rgba(255, 255, 255, .07), transparent);
  transition: left .6s ease;
  pointer-events: none;
}

.tool-card > * { z-index: 1; }

.tool-card:hover,
.tool-card:focus-visible {
  transform: translateY(-4px);
  background-color: var(--bg-panel-hover);
  border-color: var(--line-hover);
}

.tool-card:hover::before { left: 100%; }

.tool-card.featured {
  border-color: var(--accent);
  background-color: rgba(20, 18, 8, .45);
}

.tool-icon {
  margin-bottom: 1rem;
  font-size: clamp(2.25rem, 1.8rem + 2vw, 3rem);
  line-height: 1;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, .5));
}

.tool-card.featured .tool-icon {
  filter: drop-shadow(0 0 8px rgba(255, 215, 0, .25));
}

.tool-card h3 {
  margin-bottom: .5rem;
  font-size: clamp(1.1rem, 1rem + .5vw, 1.4rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 1px;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

.tool-card p {
  margin-bottom: .5rem;
  font-size: .9rem;
  font-weight: 300;
  line-height: 1.6;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.tool-arrow {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  font-size: 1.4rem;
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity var(--speed) ease, transform var(--speed) ease;
}

.tool-card:hover .tool-arrow,
.tool-card:focus-visible .tool-arrow {
  opacity: 1;
  transform: translateX(0);
}

.placeholder-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 12rem;
  padding: var(--pad);
  text-align: center;
  background-color: rgba(0, 0, 0, .2);
  border: 2px dashed rgba(255, 255, 255, .2);
  border-radius: var(--radius);
  opacity: .7;
}

/* ============================================================
   7. ФОРМЫ
   ============================================================ */
.form-container {
  width: 100%;
  max-width: 32rem;
  margin: var(--pad) auto;
  padding: var(--pad);
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.form-group {
  position: relative;
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  margin-bottom: .5rem;
  font-size: .8rem;
  font-weight: 400;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  min-width: 0;
  /* 16px — чтобы iOS не приближал поле при фокусе */
  font-size: 16px;
  padding: .85rem 1rem;
  color: #fff;
  background-color: var(--bg-field);
  border: 1px solid var(--line-field);
  border-radius: var(--radius-sm);
  outline: none;
  transition:
    background-color var(--speed) var(--ease),
    border-color var(--speed) var(--ease),
    box-shadow var(--speed) var(--ease);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--placeholder);
  font-weight: 300;
}

.form-input:hover,
.form-textarea:hover,
.form-select:hover {
  background-color: var(--bg-field-hover);
  border-color: var(--line-hover);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  background-color: var(--bg-field-focus);
  border-color: rgba(255, 255, 255, .5);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, .08);
}

.form-input[aria-invalid="true"],
.form-textarea[aria-invalid="true"],
.form-select[aria-invalid="true"] {
  border-color: var(--danger);
}

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
  opacity: .45;
  cursor: not-allowed;
}

.form-textarea {
  min-height: 120px;
  line-height: 1.5;
  resize: vertical;
}

.form-select {
  appearance: none;
  padding-right: 2.75rem;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='white' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 12px;
}

.form-select option {
  background-color: #161616;
  color: #fff;
}

/* Checkbox / Radio */
.form-checkbox,
.form-radio {
  appearance: none;
  width: 20px;
  height: 20px;
  margin-right: .5rem;
  vertical-align: middle;
  border: 2px solid rgba(255, 255, 255, .3);
  border-radius: 4px;
  background-color: var(--bg-field);
  cursor: pointer;
  transition: background-color var(--speed) ease, border-color var(--speed) ease;
}

.form-radio { border-radius: 50%; }

.form-checkbox:checked,
.form-radio:checked {
  background-color: rgba(255, 255, 255, .9);
  border-color: #fff;
}

.form-checkbox:checked::after {
  content: "✓";
  position: absolute;
  translate: -50% -50%;
  left: 10px;
  top: 10px;
  color: #000;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
}

.form-radio:checked::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #000;
  translate: -50% -50%;
  left: 10px;
  top: 10px;
}

.form-check-label {
  cursor: pointer;
  user-select: none;
  font-weight: 300;
}

/* Кнопки */
.form-button {
  position: relative;
  overflow: hidden;
  width: 100%;
  min-height: 48px;
  padding: .9rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  background-color: rgba(255, 255, 255, .08);
  border: 1px solid var(--line-field);
  border-radius: var(--radius-sm);
  transition:
    transform var(--speed) var(--ease),
    background-color var(--speed) var(--ease),
    border-color var(--speed) var(--ease);
}

.form-button::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 -100%;
  width: 100%;
  background: linear-gradient(90deg,
    transparent, rgba(255, 255, 255, .18), transparent);
  transition: left .5s ease;
  pointer-events: none;
}

.form-button:hover::before { left: 100%; }

.form-button:hover,
.form-button:focus-visible {
  transform: translateY(-2px);
  background-color: rgba(255, 255, 255, .15);
  border-color: var(--line-hover);
}

.form-button:active { transform: translateY(0); }

.form-button.primary {
  background-color: rgba(255, 255, 255, .18);
  border-color: rgba(255, 255, 255, .3);
}

.form-button.danger {
  background-color: rgba(255, 110, 110, .15);
  border-color: var(--danger);
  color: #ffb4b4;
}

.form-button.success {
  background-color: rgba(120, 220, 140, .15);
  border-color: rgba(120, 220, 140, .35);
  color: #b8f0c6;
}

.form-button:disabled {
  opacity: .45;
  cursor: not-allowed;
  transform: none;
}

.form-button:disabled::before { display: none; }

/* Загрузка файла */
.form-file {
  position: relative;
  display: block;
  width: 100%;
}

.form-file-input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  z-index: 1;
}

.form-file-label {
  display: block;
  padding: 1rem;
  text-align: center;
  font-weight: 300;
  background-color: var(--bg-field);
  border: 2px dashed rgba(255, 255, 255, .2);
  border-radius: var(--radius-sm);
  transition:
    background-color var(--speed) ease,
    border-color var(--speed) ease;
}

.form-file:hover .form-file-label,
.form-file:focus-within .form-file-label,
.form-file.is-dragover .form-file-label {
  background-color: var(--bg-field-hover);
  border-color: rgba(255, 255, 255, .45);
}

/* ============================================================
   8. FOOTER
   ============================================================ */
.footer {
  flex-shrink: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: .5rem 1.5rem;
  width: 100%;
  padding: 1.25rem var(--page-pad);
  padding-bottom: calc(1.25rem + env(safe-area-inset-bottom, 0px));
  text-align: center;
  font-size: clamp(.875rem, .8rem + .3vw, 1.25rem);
  font-weight: 300;
  letter-spacing: 1px;
  background-color: var(--bg-footer);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--line);
}

/* ============================================================
   9. АДАПТИВНОСТЬ (mobile-first)
   ============================================================ */

/* Очень узкие экраны */
@media (max-width: 360px) {
  :root { --pad: 1rem; --gap: .85rem; }
  .header button { font-size: .7rem; letter-spacing: 0; }
  .section-header h2 { letter-spacing: 1px; }
  .tool-icon { font-size: 2rem; }
  .form-button { letter-spacing: 1px; }
}

@media (min-width: 480px) {
  :root { --scroll-offset: 7rem; }
}

@media (min-width: 560px) {
  .tools-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* Планшеты и десктоп: шапка в одну строку */
@media (min-width: 768px) {
  :root { --scroll-offset: calc(var(--header-h) + 1rem); }

  .header {
    flex-wrap: nowrap;
    gap: clamp(1rem, 3vw, 3rem);
    min-height: var(--header-h);
    padding: 0 var(--page-pad);
  }

  .header h1 {
    flex: 0 1 auto;
    margin-right: auto;
    text-align: left;
    font-size: clamp(1.2rem, 1rem + 1vw, 1.9rem);
  }

  .header a { flex: 0 0 auto; }

  .header button {
    width: auto;
    padding: .5rem .9rem;
    font-size: clamp(.8rem, .7rem + .35vw, 1rem);
    letter-spacing: 1px;
  }
}

@media (min-width: 900px) {
  .tools-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 1200px) {
  .tools-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ============================================================
   10. УСТРОЙСТВА / ДОСТУПНОСТЬ / FALLBACK
   ============================================================ */

/* Тач-экраны: нет «залипшего» hover, фон не фиксирован (плавно на iOS) */
@media (hover: none), (pointer: coarse) {
  body { background-attachment: scroll; }

  .tool-card:hover,
  .form-button:hover { transform: none; }

  .tool-card::before,
  .form-button::before { display: none; }

  .tool-arrow {
    opacity: .55;
    transform: none;
  }
}

/* Уважаем отключение анимаций */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  .tool-card:hover,
  .form-button:hover { transform: none; }
}

/* Если backdrop-filter не поддерживается — просто плотнее стекло */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .header,
  .section-header,
  .tool-card,
  .form-container,
  .placeholder-card {
    background-color: rgba(0, 0, 0, .78);
  }
}

/* Системная высокая контрастность */
@media (forced-colors: active) {
  .header,
  .section-header,
  .tool-card,
  .form-container,
  .footer {
    background: Canvas;
    color: CanvasText;
    border: 1px solid CanvasText;
    backdrop-filter: none;
  }

  .form-input,
  .form-textarea,
  .form-select,
  .form-checkbox,
  .form-radio {
    background: Field;
    color: FieldText;
    border: 1px solid FieldText;
  }

  .header button::before { background: Highlight; }
}