/**
 * NUKE – Main Stylesheet
 * Dark theme · Monospace typography
 *
 * Grayscale reference:
 *   gray-1  #0e0e0e  Body/content background
 *   gray-2  #1a1a1a  Cards, inputs, raised surfaces
 *   gray-3  #2a2a2a  Borders, hover states, elevated surfaces
 *   gray-4  #bdbdbd  Bright text on dark (nav links)
 *   gray-5  #9e9e9e  Muted text (timestamps, hints)
 *   gray-6  #aaaaaa  Secondary text (descriptions, labels)
 *   gray-7  #333333  Strong borders, button hover
 *   gray-8  #252525  Button surfaces, interactive elements
 *   gray-9  #181818  Header, deep surfaces
 */

/* ===========================================
   1. VARIABLES & THEMING
   =========================================== */
:root {
  /* Theme */
  --color-blue: #0000db;
  --color-nuke-primary: #ed1c24;
  --color-nuke-primary-hover: #c41920;
  --color-nuke-accent: #fff200;
  --color-nuke-success: #00a651;
  --color-nuke-success-hover: #008c44;
  --color-nuke-danger: #ed1c24;
  --color-nuke-warning: #ff9900;
  --color-nuke-link: #4a9eed;

  /* Semantic */
  --color-self-message: var(--color-gray-6);
  --color-border-strong: rgba(0, 0, 0, 0.8);
  --color-collapsible-bg: rgba(0, 100, 255, 1);
  --color-collapsible-header: transparent;
  --color-text-secondary: #9e9e9e;
  --color-text-muted: #757575;
  --color-text-primary: var(--color-white);
  --color-border: #2a2a2a;
  --color-success: #00a651;
  --color-danger: #ed1c24;

  /* Neutral gray ramp (tight dark end, Notion-style) */
  --color-black: #000000;
  --color-gray-1: #191919;
  --color-gray-2: #1e1e1e;
  --color-gray-3: #252525;
  --color-gray-4: #2c2c2c;
  --color-gray-5: #333333;
  --color-gray-6: #3d3d3d;
  --color-gray-7: #4f4f4f;
  --color-gray-8: #7a7a7a;
  --color-gray-9: #9a9a9a;
  --color-gray-10: #b0b0b0;
  --color-gray-11: #ebebeb;
  --color-gray-12: #f5f5f5;
  --color-white: #ffffff;
  --color-text: var(--color-gray-11);

  /* Layout */
  --header-height: 56px;
  --border-width: 2px;
  --spacing: 16px;
  --spacing-sm: 8px;
  --spacing-lg: 24px;
  --border-radius: 4px;

  /* Icons */
  --level-icon-sm: 18px;

  /* Typography */
  --font-mono: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-digital: 'DS Digital', monospace;
  --font-bank-gothic: 'Inter', sans-serif;
  --font-conduit: 'Inter', sans-serif;
  --font-top-secret: 'Inter', sans-serif;
  --font-elegant-typewriter: 'Inter', sans-serif;
  --font-numeric: 'Nunito', sans-serif;
  --font-size-xs: 10px;
  --font-size-sm: 12px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 20px;
  --font-size-xxl: 24px;
  --line-height: 1.5;
}

/* ===========================================
   2. FONTS
   =========================================== */
@font-face {
  font-family: 'Berkeley Mono';
  src: url('/fonts/BerkeleyMono-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
}

@font-face {
  font-family: 'Berkeley Mono';
  src: url('/fonts/BerkeleyMono-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
}

@font-face {
  font-family: 'DS Digital';
  src: url('/fonts/DS-DIGI.TTF') format('truetype');
  font-weight: 400;
  font-style: normal;
}

@font-face {
  font-family: 'DS Digital';
  src: url('/fonts/DS-DIGIB.TTF') format('truetype');
  font-weight: 700;
  font-style: normal;
}

@font-face {
  font-family: 'DS Digital';
  src: url('/fonts/DS-DIGII.TTF') format('truetype');
  font-weight: 400;
  font-style: italic;
}

@font-face {
  font-family: 'DS Digital';
  src: url('/fonts/DS-DIGIT.TTF') format('truetype');
  font-weight: 700;
  font-style: italic;
}

@font-face {
  font-family: 'Arial Rounded';
  src: url('/fonts/arialroundedmtbold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
}

@font-face {
  font-family: 'Bank Gothic';
  src: url('/fonts/BankGothic Md BT.ttf') format('truetype');
  font-weight: 500;
  font-style: normal;
}

@font-face {
  font-family: 'Bank Gothic';
  src: url('/fonts/BankGothic Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
}

@font-face {
  font-family: 'Conduit ITC';
  src: url('/fonts/Conduit ITC Light Regular.otf') format('opentype');
  font-weight: 300;
  font-style: normal;
}

@font-face {
  font-family: 'Conduit ITC';
  src: url('/fonts/Conduit ITC Regular.otf') format('opentype');
  font-weight: 400;
  font-style: normal;
}

@font-face {
  font-family: 'Conduit ITC';
  src: url('/fonts/Conduit ITC Medium Regular.otf') format('opentype');
  font-weight: 500;
  font-style: normal;
}

@font-face {
  font-family: 'Conduit ITC';
  src: url('/fonts/Conduit ITC Black Regular.otf') format('opentype');
  font-weight: 900;
  font-style: normal;
}

@font-face {
  font-family: 'Top Secret';
  src: url('/fonts/Top Secret.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
}

@font-face {
  font-family: 'Elegant Typewriter';
  src: url('/fonts/ELEGANT TYPEWRITER Light.ttf') format('truetype');
  font-weight: 300;
  font-style: normal;
}

@font-face {
  font-family: 'Elegant Typewriter';
  src: url('/fonts/ELEGANT TYPEWRITER Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
}

@font-face {
  font-family: 'Elegant Typewriter';
  src: url('/fonts/ELEGANT TYPEWRITER Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
}

@font-face {
  font-family: 'Elegant Typewriter';
  src: url('/fonts/ELEGANT TYPEWRITER Italic.ttf') format('truetype');
  font-weight: 400;
  font-style: italic;
}

@font-face {
  font-family: 'Impact';
  src: url('/fonts/impact.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
}

@font-face {
  font-family: 'Impact';
  src: url('/fonts/Impacted.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
}

@font-face {
  font-family: 'Impact Unicode';
  src: url('/fonts/unicode.impact.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
}

/* ===========================================
   3. RESET & UTILITIES
   =========================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-md);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

button {
  -webkit-user-select: none;
  user-select: none;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-weight: 400;
  font-size: var(--font-size-md);
  background: var(--color-black);
  color: var(--color-text);
  line-height: var(--line-height);
  min-height: 100vh;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: url('/img/tiles/Swirl.png') repeat;
  opacity: 0.15;
  pointer-events: none;
  z-index: 0;
}

body > * {
  position: relative;
  z-index: 1;
}


a { color: inherit; text-decoration: none; }
button { font-family: inherit; font-weight: 400; font-size: var(--font-size-md); color: var(--color-text-primary); cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; font-weight: 400; font-size: var(--font-size-md); color: var(--color-text-primary); }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; }

.hidden { display: none !important; }

/* ===========================================
   4. LAYOUT
   =========================================== */

/* Shell */
.app-wrapper {
  display: flex;
  flex-direction: row;
  min-height: 100vh;
  max-width: 100vw;
}

.layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  flex: 1;
  min-width: 0;
  overflow-x: hidden;
}

.content {
  flex: 1;
  min-width: 0;
  padding: var(--spacing-lg);
  position: relative;
  background: transparent;
}

/* Container shared between signin / browse / upload */
.signin-container,
.onboarding-container {
  max-width: 1200px;
  margin: 0 auto;
}

/* Typography helpers */
.page-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
}

.section-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing);
  color: var(--color-text);
}

/* Buttons */
.action-btn {
  padding: 12px 24px;
  background: var(--color-gray-8);
  color: var(--color-text-primary);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  font-weight: 700;
  transition: all 0.2s;
}

.action-btn:hover:not(:disabled) { background: var(--color-gray-7); }
.action-btn:disabled { cursor: not-allowed; }

.btn-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: btn-spin 0.7s linear infinite;
}
@keyframes btn-spin { to { transform: rotate(360deg); } }
.action-btn.primary { background: var(--color-blue); }
.action-btn.primary:hover:not(:disabled) { background: var(--color-blue); }
.action-btn.accent { background: var(--color-blue); }
.action-btn.accent:hover:not(:disabled) { background: var(--color-blue); }

/* Modals */

/* Signin block */
.signin-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100%;
}

.signin-content {
  max-width: 400px;
  width: 100%;
  text-align: center;
}

.signin-title {
  font-size: var(--font-size-xxl);
  margin-bottom: var(--spacing);
  color: var(--color-white);
}

.signin-description {
  color: var(--color-gray-6);
  margin-bottom: var(--spacing-lg);
}

.wallet-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing);
}

.wallet-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing);
  padding: 7px 14px;
  background: var(--color-blue);
  color: var(--color-white);
  border: 0;
  border-radius: 12px;
  font: inherit;
  font-size: var(--font-size-lg);
  font-weight: 700;
  cursor: pointer;
}

.wallet-btn:hover:not(:disabled) { filter: brightness(1.1); }
.wallet-btn:active:not(:disabled) {
  filter: brightness(0.92);
  transform: translateY(1px);
  transition: all 0.06s ease;
}

.wallet-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.wallet-btn.not-installed { opacity: 0.5; }

.signin-status {
  margin-top: var(--spacing-lg);
  padding: var(--spacing);
  background: transparent;
  border-radius: var(--border-radius);
  color: var(--color-white);
  font-size: var(--font-size-xxl);
  font-weight: 700;
  -webkit-text-stroke: 2px var(--color-black);
  paint-order: stroke fill;
}

.signin-status .status-text::after {
  content: '';
  display: inline-block;
  width: 12px;
  text-align: left;
  animation: signin-dots 1.2s steps(4, end) infinite;
}

@keyframes signin-dots {
  0% { content: ''; }
  25% { content: '.'; }
  50% { content: '..'; }
  75% { content: '...'; }
}

.btn-loading::after {
  content: '';
  display: inline-block;
  width: 12px;
  text-align: left;
  animation: signin-dots 1.2s steps(4, end) infinite;
}

.signin-error {
  margin-top: var(--spacing);
  padding: var(--spacing);
  background: rgba(237, 28, 36, 0.1);
  color: var(--color-nuke-danger);
  border-radius: var(--border-radius);
}

/* ===========================================
   8. FILE SITE — BROWSE / UPLOAD
   =========================================== */

.fs-container {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing);
}

.fs-toolbar {
  display: flex;
  align-items: center;
  gap: var(--spacing);
  padding: var(--spacing-sm) var(--spacing);
  background: rgba(0, 0, 0, 0.4);
  border-radius: var(--border-radius);
  flex-wrap: wrap;
}

.fs-path {
  flex: 1;
  font-family: var(--font-mono);
  color: var(--color-gray-11);
  word-break: break-all;
}

.fs-path .crumb { cursor: pointer; }
.fs-path .crumb:hover { color: var(--color-blue); text-decoration: underline; }
.fs-path .sep { color: var(--color-gray-7); margin: 0 2px; }

.fs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--spacing-sm);
}

.fs-tile {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--spacing-sm) var(--spacing);
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid var(--color-gray-3);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all 0.12s;
  min-height: 64px;
  word-break: break-all;
}
.fs-tile:hover { border-color: var(--color-blue); background: rgba(0, 0, 0, 0.6); }

.fs-tile .label {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-white);
  display: flex;
  align-items: center;
  gap: 6px;
}
.fs-tile .meta {
  font-size: var(--font-size-xs);
  color: var(--color-gray-8);
  font-family: var(--font-mono);
}
.fs-tile.is-folder .label::before { content: "▸"; color: var(--color-blue); }
.fs-tile.is-file   .label::before { content: "·"; color: var(--color-gray-7); }

.fs-empty {
  text-align: center;
  padding: var(--spacing-lg);
  color: var(--color-gray-8);
}

.fs-uploader {
  border: 1px dashed var(--color-gray-5);
  border-radius: var(--border-radius);
  padding: var(--spacing);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.fs-input {
  background: var(--color-black);
  color: var(--color-white);
  border: 1px solid var(--color-gray-5);
  border-radius: var(--border-radius);
  padding: 10px 12px;
  font: inherit;
  font-family: var(--font-mono);
  width: 100%;
}
.fs-input:focus { outline: none; border-color: var(--color-blue); }

.fs-row {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
  flex-wrap: wrap;
}

.fs-status {
  font-family: var(--font-mono);
  color: var(--color-gray-9);
  padding: var(--spacing-sm) 0;
}
.fs-error {
  color: var(--color-nuke-danger);
  font-family: var(--font-mono);
}

.fs-preview {
  margin-top: var(--spacing);
  display: flex;
  justify-content: center;
  align-items: center;
}
.fs-preview img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 240px;
  object-fit: contain;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-gray-5);
}

.fs-fileview {
  background: var(--color-gray-2);
  padding: var(--spacing);
  border-radius: var(--border-radius);
  font-family: var(--font-mono);
  word-break: break-all;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}
.fs-fileview img, .fs-fileview video {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 60vh;
  object-fit: contain;
  border-radius: var(--border-radius);
  align-self: center;
}
.fs-fileview pre {
  background: var(--color-black);
  padding: var(--spacing-sm);
  border-radius: var(--border-radius);
  overflow: auto;
  white-space: pre-wrap;
}
.fs-meta-list {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 4px var(--spacing);
  font-size: var(--font-size-sm);
  color: var(--color-gray-9);
}
.fs-meta-list .k { color: var(--color-gray-8); }
.fs-meta-list .v { color: var(--color-white); word-break: break-all; }

.fs-page-title {
  font-family: var(--font-mono);
  font-size: var(--font-size-xl);
  color: var(--color-white);
}

.fs-tabs {
  display: flex;
  gap: var(--spacing-sm);
  border-bottom: 1px solid var(--color-gray-5);
  padding-bottom: 0;
}
.fs-tab {
  padding: 8px 16px;
  background: transparent;
  color: var(--color-gray-9);
  font-weight: 700;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.fs-tab.active { color: var(--color-white); border-bottom-color: var(--color-blue); }

.fs-progress {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--color-gray-9);
}

.fs-identity {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--color-gray-9);
  margin-right: var(--spacing-sm);
}
.fs-identity .username { font-size: var(--font-size-md); -webkit-text-stroke: 0; }
.fs-identity .addr { color: var(--color-gray-7); }

.fs-no-username {
  background: rgba(255, 153, 0, 0.08);
  border: 1px solid var(--color-nuke-warning);
  color: var(--color-white);
  padding: var(--spacing-sm) var(--spacing);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
}
.fs-no-username a { color: var(--color-blue); text-decoration: underline; }
.fs-no-username code {
  font-family: var(--font-mono);
  background: rgba(0,0,0,0.4);
  padding: 1px 4px;
  border-radius: 3px;
}

.fs-path-warn {
  background: rgba(237, 28, 36, 0.08);
  border: 1px solid var(--color-nuke-danger);
  color: var(--color-nuke-danger);
  padding: var(--spacing-sm) var(--spacing);
  border-radius: var(--border-radius);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}