:root {
  --bg: #ffffff;
  --fg: #111111;
  --muted: #555555;
  --card: #f6f7f9;
  --line: #e4e5ea;
  --accent: #111111;
  --ok: #17c964;
  --off: #999999;
  --field-height: 160px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0c0f;
    --fg: #f5f7fa;
    --muted: #c7c9d1;
    --card: #12141a;
    --line: #1f2330;
    --accent: #f5f7fa;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, Inter, sans-serif;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

a:hover {
  text-decoration: underline;
}

/* Layout */

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */

header {
  border-bottom: 1px solid var(--line);
  background: #f6f7f9;
}

@media (prefers-color-scheme: dark) {
  header {
    background: #101218;
  }
}

header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 18px;
}

.brand-logo {
  width: 26px;
  height: 26px;
}

.brand-tagline {
  font-size: 13px;
  color: var(--muted);
}

/* Top nav */

.nav {
  margin-left: auto;
  font-size: 14px;
}

.nav-root {
  position: relative;
}

.nav-root-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--fg);
  font: inherit;
  cursor: pointer;
}

.nav-root-btn:hover {
  background: rgba(0, 0, 0, 0.03);
}

.nav-root-caret {
  font-size: 11px;
  opacity: 0.7;
}

.nav-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  min-width: 220px;
  background: #f6f7f9;
  border-radius: 10px;
  border: 1px solid var(--line);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
  padding: 6px;
  display: none;
  z-index: 10;
}

.nav-item {
  display: block;
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 13px;
  color: var(--muted);
  cursor: pointer;
}

.nav-menu a.nav-item,
.nav-menu a.nav-item:hover {
  text-decoration: none;
}

.nav-item:hover {
  background: rgba(0, 0, 0, 0.04);
  color: var(--fg);
}

.nav-item--current {
  font-weight: 600;
  color: var(--fg);
  background: rgba(0, 0, 0, 0.04);
}

.nav-item--current::after {
  content: '•';
  float: right;
  color: var(--accent);
  font-size: 14px;
}

.nav-root--open .nav-menu {
  display: block;
}

@media (prefers-color-scheme: dark) {
  .nav-menu {
    background: #101218;
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.7);
  }

  .nav-item:hover {
    background: rgba(255, 255, 255, 0.06);
  }

  .nav-item--current {
    background: rgba(255, 255, 255, 0.04);
  }
}

/* Main */

main {
  flex: 1;
  padding: 16px 0 20px;
  display: flex;
  align-items: center;
}

main .wrap {
  width: 100%;
}

.main-head {
  margin: 0 auto 20px;
  max-width: 640px;
  text-align: center;
  padding: 14px 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(246, 247, 249, 0.9);
}

.page-title {
  font-size: 26px;
  margin: 0 0 6px;
}

.page-subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

@media (prefers-color-scheme: dark) {
  .main-head {
    background: rgba(15, 17, 23, 0.9);
  }
}

/* Grid & cards */

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  align-items: stretch;
}

/* На очень узких экранах (мобилки) складываем в одну колонку */
@media (max-width: 640px) {
  .grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Видео-фон на заднем плане */
.bg-video {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background: #000000;
}

.bg-video__media {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* По умолчанию используем широкое видео */
.bg-video--portrait {
  display: none;
}

/* На очень "высоких" экранах переключаемся на вертикальное видео */
@media (max-aspect-ratio: 3/4) {
  .bg-video--landscape {
    display: none;
  }
  .bg-video--portrait {
    display: block;
  }
}

.card {
  background: rgba(246, 247, 249, 0.9);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  height: 100%;
}

@media (prefers-color-scheme: dark) {
  .card {
    background: rgba(15, 17, 23, 0.9);
  }
}

.card {
  display: flex;
  flex-direction: column;
}

.card-main {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card-main--center {
  align-items: center;
  text-align: center;
}

.card-main--center .field {
  width: 100%;
  display: flex;
  justify-content: center;
  margin-top: 20px;
}

.card-footer {
  margin-top: auto;
  padding-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.card h2 {
  margin: 0 0 10px;
  font-size: 18px;
}

.card p {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 14px;
}

.field {
  margin-top: 12px;
}

.field-label {
  display: block;
  font-size: 13px;
  margin-bottom: 4px;
  color: var(--muted);
}

.file-name {
  font-weight: 600;
  margin: 8px 0 16px;
  word-break: break-all;
}

.text-block {
  white-space: pre-wrap;
  word-wrap: break-word;
  background: #111318;
  border-radius: 8px;
  padding: 12px 16px;
  margin: 8px 0 16px;
}

.text-input {
  width: 100%;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.85);
  color: var(--fg);
  font: inherit;
  resize: vertical;
  min-height: var(--field-height);
}

.text-input:focus {
  outline: none;
  border-color: var(--accent);
  background: #ffffff;
}

.code-input {
  width: 190px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  color: var(--fg);
  font: 18px/1.3 system-ui, -apple-system, "Segoe UI", Roboto, Inter, sans-serif;
  text-align: center;
  letter-spacing: 0.3em;
  -webkit-text-security: disc;
  text-security: disc;
}

.code-input::placeholder {
  letter-spacing: 0.3em;
}

.code-input:focus {
  outline: none;
  border-color: var(--accent);
  background: #ffffff;
}

.code-input--ok {
  border-color: #22c55e;
  box-shadow: 0 0 0 1px #22c55e;
  color: #22c55e;
}

.code-input--error {
  border-color: #ef4444;
  box-shadow: 0 0 0 1px #ef4444;
  color: #ef4444;
}

.error-text {
  margin: 6px 0 0;
  font-size: 13px;
  color: #e5484d;
}

.error-text:empty {
  display: none;
}

@media (prefers-color-scheme: dark) {
  .code-input {
    background: rgba(8, 9, 13, 0.95);
    border-color: rgba(255, 255, 255, 0.25);
  }

  .code-input:focus {
    background: rgba(8, 9, 13, 0.95);
    border-color: var(--accent);
  }

    .code-input--ok {
    border-color: #22c55e;
    box-shadow: 0 0 0 1px #22c55e;
    color: #4ade80;
  }

  .code-input--error {
    border-color: #ef4444;
    box-shadow: 0 0 0 1px #ef4444;
    color: #f87171;
  }
}

.dropzone {
  width: 100%;
  min-height: var(--field-height);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 10px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.85);
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.dropzone--active {
  border-color: var(--accent);
  background-color: #ffffff;
}

.dropzone input[type="file"] {
  display: none;
}

.dropzone-label {
  display: block;
  font-size: 0.9rem;
  color: var(--muted);
}

textarea {
  padding: 8px 10px;
  min-height: var(--field-height);
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.9);
  resize: vertical;
  background: rgba(255, 255, 255, 0.85);
  color: var(--fg);
}

@media (prefers-color-scheme: dark) {
  .text-input,
  textarea,
  .dropzone {
    background: rgba(8, 9, 13, 0.95);
    border-color: rgba(255, 255, 255, 0.25);
  }

  .dropzone--active {
    background: rgba(12, 14, 20, 0.98);
  }
  .text-input:focus,
  textarea:focus {
    background: rgba(8, 9, 13, 0.95);
    border-color: var(--accent);
  }
}

/* Блоки с опцииями TTL/пароль — одинаковая сетка для обеих карточек */

.options-row {
  margin-top: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.options-label {
  min-width: 160px;
  font-size: 13px;
  color: var(--muted);
}

.options-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.option-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  font-size: 13px;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
}

.option-pill input {
  margin: 0;
  accent-color: var(--accent);
}

@media (prefers-color-scheme: dark) {
  .option-pill {
    background: rgba(0, 0, 0, 0.2);
  }
}

@media (max-width: 720px) {
  .options-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .options-label {
    min-width: 0;
  }
}

/* Forms */

label {
  display: block;
  font-size: 14px;
  margin-bottom: 8px;
}

input[type="file"],
input[type="number"] {
  width: 100%;
  font: inherit;
}

input[type="file"] {
  margin-top: 4px;
}

input[type="number"] {
  padding: 6px 8px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--fg);
}

input[type="number"]:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--fg);
  font: 14px/1.2 inherit;
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease, transform 0.05s ease;
}

.btn.primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}

.btn:hover {
  transform: translateY(-1px);
  background: rgba(0, 0, 0, 0.03);
}

.btn.primary:hover {
  background: #000000;
  border-color: #000000;
}

.btn:active {
  transform: translateY(0);
}

.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Results */

.result {
  margin-top: 10px;
  font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 13px;
  word-break: break-all;
}

.result:empty {
  display: none;
}

.upload-progress:empty {
  display: none;
}

/* Helper text */

.muted {
  color: var(--muted);
  font-size: 13px;
}

/* Детальные страницы: метаданные, текст и списки файлов */

.meta-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  font-size: 14px;
  color: var(--muted);
}

.meta-list li {
  margin-bottom: 4px;
}

.text-view {
  margin: 12px 0 16px;
  padding: 12px 16px;
  border-radius: 10px;
  background: #111318;
  color: #f5f7fa;
  white-space: pre-wrap;
  word-wrap: break-word;
  max-height: 320px;
  overflow: auto;
  font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 14px;
}

.file-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.file-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.9);
}

.file-main {
  min-width: 0;
}

.file-meta {
  margin-left: 12px;
  font-size: 13px;
  color: var(--muted);
  white-space: nowrap;
}

@media (prefers-color-scheme: dark) {
  .text-view {
    background: #090b11;
    color: #f5f7fa;
  }

  .file-item {
    border-color: rgba(255, 255, 255, 0.16);
    background: rgba(11, 12, 15, 0.98);
  }
}

/* Footer */

footer {
  margin-top: auto;
  padding-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #f6f7f9;
  border-top: 1px solid var(--line);
}

footer .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px 18px;
}

@media (prefers-color-scheme: dark) {
  footer {
    background: #101218;
  }
}

footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

@media (max-width: 600px) {
  footer .wrap {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-color-scheme: dark) {
  .btn.primary {
    background: #f5f7fa;
    border-color: #f5f7fa;
    color: #000000;
  }

  .btn.primary:hover {
    background: #e5e7ee;
    border-color: #e5e7ee;
  }
}