/* ========================================================
   INTRAPLANE.TECH — Terminal dark theme
   ======================================================== */

:root {
  --bg:         #060b12;
  --bg-card:    #0d1117;
  --bg-hover:   #161b22;
  --border:     #1e2a3a;
  --border-hl:  #2a3f56;
  --text:       #cdd9e5;
  --text-dim:   #5a6a7a;
  --accent:     #39d353;   /* terminal green */
  --accent-dim: #1d6b2a;
  --blue:       #58a6ff;
  --blue-dim:   #1a3f6f;
  --warn:       #f0883e;
  --danger:     #f85149;
  --success:    #3fb950;
  --font-mono:  'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0,60,100,0.15), transparent);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Scanlines overlay */
.scanlines {
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 3px,
    rgba(0,0,0,0.04) 3px,
    rgba(0,0,0,0.04) 4px
  );
  pointer-events: none;
  z-index: 9999;
}

/* ── Typography ── */
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.accent { color: var(--accent); }
.blue   { color: var(--blue); }
.text-dim { color: var(--text-dim); }
.prompt { color: var(--accent); font-weight: 600; margin-right: 0.4rem; }
code { background: var(--bg-card); color: var(--accent); padding: 0.1em 0.35em; border-radius: 3px; font-family: var(--font-mono); font-size: 0.9em; }

/* ── Cursor blink ── */
.cursor {
  display: inline-block;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ── Navigation ── */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 2rem;
  border-bottom: 1px solid var(--border);
  background: rgba(6,11,18,0.95);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text);
  text-decoration: none;
}
.nav-brand:hover { text-decoration: none; color: var(--text); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  color: var(--text-dim);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  padding: 0.35rem 0.7rem;
  border-radius: 4px;
  text-decoration: none;
  transition: color 0.15s, background 0.15s;
}
.nav-link:hover { color: var(--text); background: var(--bg-hover); text-decoration: none; }
.nav-logout { color: var(--danger) !important; }
.nav-logout:hover { background: rgba(248,81,73,0.1) !important; }
.nav-login  { color: var(--accent) !important; }

.nav-hamburger {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 0.3rem 0.6rem;
  cursor: pointer;
  font-size: 1rem;
  border-radius: 4px;
}

@media (max-width: 640px) {
  .nav-hamburger { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 0.5rem 0;
  }
  .nav-links.open { display: flex; }
  .nav-link { width: 100%; padding: 0.6rem 2rem; border-radius: 0; }
}

/* ── Main ── */
.main {
  flex: 1;
  padding: 2rem;
  max-width: 1000px;
  width: 100%;
  margin: 0 auto;
}

@media (max-width: 480px) {
  .main { padding: 1.25rem 1rem; }
  .nav  { padding: 0.75rem 1rem; }
  .page-header { flex-direction: column; align-items: flex-start; }
  .chat-wrap { height: calc(100dvh - 120px); }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .doc-article { padding: 1rem; }
  .auth-wrap { padding: 1rem 0; }
  .features-grid { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 481px) and (max-width: 768px) {
  .main { padding: 1.5rem; }
  .chat-wrap { height: calc(100dvh - 130px); }
}

/* Touch-friendly tap targets */
@media (hover: none) {
  .btn { min-height: 44px; }
  .nav-link { min-height: 44px; display: flex; align-items: center; }
  .btn-icon { min-width: 36px; min-height: 36px; display: inline-flex; align-items: center; justify-content: center; }
}

/* ── Footer ── */
.footer {
  padding: 1rem 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.78rem;
  color: var(--text-dim);
  text-align: center;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.2rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s;
}
.btn:hover { text-decoration: none; }

.btn-primary {
  background: var(--accent);
  color: #000;
}
.btn-primary:hover { background: #4eff6b; }

.btn-ghost {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border);
}
.btn-ghost:hover { color: var(--text); border-color: var(--border-hl); background: var(--bg-hover); }

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
}
.btn-danger:hover { background: rgba(248,81,73,0.1); }

.btn-sm { padding: 0.35rem 0.8rem; font-size: 0.78rem; }
.btn-full { width: 100%; justify-content: center; }

.btn-icon {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 1rem;
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  transition: color 0.15s, background 0.15s;
}
.btn-icon:hover { color: var(--blue); background: var(--bg-hover); }
.btn-icon-danger:hover { color: var(--danger) !important; }

/* ── Alerts ── */
.alert {
  padding: 0.7rem 1rem;
  border-radius: 4px;
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
  border-left: 3px solid;
}
.alert-error   { background: rgba(248,81,73,0.08);  border-color: var(--danger);  color: var(--danger); }
.alert-success { background: rgba(63,185,80,0.08);  border-color: var(--success); color: var(--success); }
.alert-warn    { background: rgba(240,136,62,0.08); border-color: var(--warn);    color: var(--warn); }
.alert-ok      { background: rgba(88,166,255,0.08); border-color: var(--blue);    color: var(--blue); }

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.6rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  border-radius: 3px;
}
.badge-ok   { background: rgba(57,211,83,0.12);  color: var(--accent); border: 1px solid var(--accent-dim); }
.badge-warn { background: rgba(240,136,62,0.12); color: var(--warn);   border: 1px solid rgba(240,136,62,0.3); }
.link-warn  { color: var(--warn); text-decoration: underline; }

/* ── Forms ── */
.form-group { margin-bottom: 1.25rem; }
.form-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 0.45rem;
}
.form-input {
  width: 100%;
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.65rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.15s;
}
.form-input:focus { border-color: var(--accent); }
.form-input::placeholder { color: var(--text-dim); }
.form-hint { font-size: 0.78rem; color: var(--text-dim); margin-top: 0.35rem; }
.form-actions { display: flex; gap: 0.75rem; margin-top: 1.5rem; }

/* ── Section headers ── */
.section { margin-top: 2.5rem; }
.section-header {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
  margin-bottom: 1.25rem;
}

/* ── Page header ── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  gap: 1rem;
}
.page-title {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text);
}
.page-actions { display: flex; gap: 0.5rem; }

/* ── Terminal widget ── */
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 0.9rem;
  background: var(--bg-hover);
  border-bottom: 1px solid var(--border);
  border-radius: 6px 6px 0 0;
}
.terminal-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.dot-red    { background: #ff5f57; }
.dot-yellow { background: #febc2e; }
.dot-green  { background: #28c840; }
.terminal-title {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-left: auto;
  margin-right: auto;
}

/* ── Hero ── */
.hero {
  padding: 2rem 0;
}
.hero-terminal {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-card);
  overflow: hidden;
  max-width: 680px;
}
.terminal-body {
  padding: 1.2rem 1.4rem;
}
.terminal-line {
  font-size: 0.9rem;
  line-height: 2;
  opacity: 0;
  animation: fadeIn 0.2s forwards;
}
@keyframes fadeIn { to { opacity: 1; } }

.hero-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

/* ── Doc grid (home) ── */
.doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.75rem;
}
.doc-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1rem 1.1rem;
  text-decoration: none;
  transition: border-color 0.15s, background 0.15s;
}
.doc-card:hover { border-color: var(--border-hl); background: var(--bg-hover); text-decoration: none; }
.doc-card-title { font-size: 0.9rem; font-weight: 500; color: var(--text); margin-bottom: 0.35rem; }
.doc-card-meta  { font-size: 0.75rem; }

/* ── Features grid (home) ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1.25rem 1.1rem;
}
.feature-icon  { font-size: 1.4rem; margin-bottom: 0.6rem; }
.feature-title { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em; margin-bottom: 0.5rem; }
.feature-desc  { font-size: 0.8rem; line-height: 1.5; }

/* ── Doc list ── */
.doc-list { display: flex; flex-direction: column; gap: 0.4rem; }
.doc-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: border-color 0.15s;
}
.doc-list-item:hover { border-color: var(--border-hl); }
.doc-list-info { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }
.doc-list-title { font-size: 0.9rem; color: var(--text); font-weight: 500; }
.doc-list-title:hover { color: var(--accent); text-decoration: none; }
.doc-list-meta  { font-size: 0.75rem; }
.doc-list-actions { display: flex; gap: 0.25rem; flex-shrink: 0; }

/* ── Upload ── */
.upload-form { margin-bottom: 1rem; }
.upload-zone {
  position: relative;
  border: 1px dashed var(--border);
  border-radius: 5px;
  background: var(--bg-card);
  padding: 1.5rem;
  margin-bottom: 0.75rem;
  transition: border-color 0.15s;
}
.upload-zone:hover { border-color: var(--border-hl); }
.upload-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}
.upload-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--text-dim);
  cursor: pointer;
}
.upload-icon { font-size: 1.8rem; color: var(--border-hl); }

.file-list { display: flex; flex-direction: column; gap: 0.35rem; margin-top: 0.75rem; }
.file-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.45rem 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.82rem;
}
.file-name { color: var(--blue); flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-size { flex-shrink: 0; }

/* ── Doc view ── */
.doc-view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}
.breadcrumb { font-size: 0.8rem; }
.breadcrumb a { color: var(--text-dim); }
.breadcrumb a:hover { color: var(--text); }
.breadcrumb span { margin: 0 0.4rem; color: var(--border-hl); }

.doc-article {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2rem 2.5rem;
}
.doc-article-title { font-size: 1.6rem; font-weight: 700; margin-bottom: 0.5rem; }
.doc-article-meta  { font-size: 0.8rem; margin-bottom: 2rem; padding-bottom: 1.25rem; border-bottom: 1px solid var(--border); }

@media (max-width: 600px) {
  .doc-article { padding: 1.25rem 1.25rem; }
}

/* ── Doc edit form ── */
.doc-form { max-width: 900px; }

/* ── Auth ── */
.auth-wrap {
  display: flex;
  justify-content: center;
  padding: 3rem 0;
}
.auth-box {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.auth-body { padding: 2rem; }
.auth-logo {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}
.auth-form { margin-top: 1rem; }
.auth-hint { font-size: 0.78rem; margin-top: 1.25rem; text-align: center; }
.link-dim { color: var(--text-dim); text-decoration: underline; }

/* ── Chat ── */
.chat-wrap {
  display: flex;
  flex-direction: column;
  height: calc(100dvh - 140px);
  height: calc(100vh - 140px);
  min-height: 400px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--bg-hover);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.chat-title { font-size: 0.82rem; font-weight: 600; letter-spacing: 0.08em; }
.chat-controls { display: flex; align-items: center; gap: 0.75rem; }

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.chat-messages::-webkit-scrollbar { width: 4px; }
.chat-messages::-webkit-scrollbar-thumb { background: var(--border-hl); border-radius: 2px; }

.chat-empty { font-size: 0.85rem; padding: 0.5rem 0; }

.chat-msg { display: flex; flex-direction: column; gap: 0.3rem; max-width: 85%; }
.chat-msg-user      { align-self: flex-end; align-items: flex-end; }
.chat-msg-assistant { align-self: flex-start; }

.chat-msg-role {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}
.chat-msg-user .chat-msg-role { color: var(--blue); }
.chat-msg-assistant .chat-msg-role { color: var(--accent); }

.chat-msg-content {
  padding: 0.65rem 0.9rem;
  border-radius: 6px;
  font-size: 0.88rem;
  line-height: 1.65;
}
.chat-msg-user .chat-msg-content {
  background: var(--blue-dim);
  color: var(--text);
  border: 1px solid rgba(88,166,255,0.2);
  border-bottom-right-radius: 2px;
}
.chat-msg-assistant .chat-msg-content {
  background: var(--bg);
  border: 1px solid var(--border);
  border-bottom-left-radius: 2px;
}

/* Typing dots */
.dots span {
  animation: dotBlink 1.2s infinite;
  opacity: 0;
}
.dots span:nth-child(1) { animation-delay: 0s; }
.dots span:nth-child(2) { animation-delay: 0.2s; }
.dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes dotBlink { 0%,80%,100% { opacity: 0; } 40% { opacity: 1; } }

/* Chat input */
.chat-input-form {
  display: flex;
  flex-direction: column;
  padding: 0.75rem;
  border-top: 1px solid var(--border);
  background: var(--bg);
  gap: 0.5rem;
  flex-shrink: 0;
}
.chat-input {
  width: 100%;
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.65rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  resize: none;
  outline: none;
  transition: border-color 0.15s;
  min-height: 72px;
}
.chat-input:focus { border-color: var(--accent); }
.chat-input::placeholder { color: var(--text-dim); }
.chat-input-actions { display: flex; justify-content: flex-end; }

/* Messages board */
.msg-entry {
  padding: 0.6rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
}
.msg-author { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; margin-right: 0.75rem; }
.msg-time   { font-size: 0.72rem; }
.msg-text   { font-size: 0.88rem; margin-top: 0.35rem; white-space: pre-wrap; word-break: break-word; }

/* ── Settings ── */
.settings-form { max-width: 580px; }
.settings-section { margin-bottom: 2rem; }
.settings-section-title {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.4rem;
  margin-bottom: 1rem;
}

/* ── Empty state ── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 4rem 2rem;
  text-align: center;
}
.empty-icon { font-size: 2.5rem; color: var(--border-hl); }
.empty-text { font-size: 0.9rem; }

/* ── Error page ── */
.error-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 50vh;
  text-align: center;
  gap: 0.5rem;
}
.error-code { font-size: 5rem; font-weight: 700; letter-spacing: 0.1em; line-height: 1; }
.error-msg  { font-size: 1rem; font-weight: 600; letter-spacing: 0.1em; }
.error-detail { font-size: 0.85rem; margin-top: 0.5rem; }