/* ─────────── DESIGN TOKENS ─────────── */
:root {
  --bg-body: #0a0a0f;
  --bg-card: #15151e;
  --bg-panel: #111119;
  --bg-input: #1a1a26;
  --border-subtle: #26263a;
  --accent: #7c6bff;
  --accent-dim: #6a5acd;
  --accent-glow: rgba(124,107,255,.15);
  --text: #e8e8f0;
  --text-muted: #6e6e8a;
  --success: #34d399;
  --danger: #ef4444;
  --radius: 12px;
  --radius-sm: 8px;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
}

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

body {
  font-family: var(--font-body);
  background: var(--bg-body);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.screen { display: none; }
.screen.active { display: flex; flex-direction: column; min-height: 100vh; }

/* ─────────── AUTH ─────────── */
#auth-screen {
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 2.5rem 2.2rem 2rem;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 24px 60px rgba(0,0,0,.5);
  animation: cardIn .35s ease;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

.auth-logo { text-align: center; font-size: 2.2rem; margin-bottom: .25rem; }
.auth-card h1 {
  text-align: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.7rem;
  color: var(--text);
  margin-bottom: .2rem;
}
.subtitle {
  text-align: center;
  font-size: .78rem;
  color: var(--text-muted);
  margin-bottom: 1.6rem;
  line-height: 1.5;
}

.form-group { margin-bottom: 1.1rem; }
.form-group label {
  display: block;
  font-size: .72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: .35rem;
}
.form-group input {
  width: 100%;
  padding: .68rem .9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--bg-input);
  color: var(--text);
  font-size: .88rem;
  font-family: var(--font-mono);
  transition: border-color .2s;
  outline: none;
}
.form-group input:focus { border-color: var(--accent); }
.form-group input::placeholder { color: var(--text-muted); opacity: .55; }

.auth-btn {
  width: 100%;
  padding: .72rem;
  border-radius: var(--radius-sm);
  border: none;
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: #fff;
  font-size: .92rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .2s;
  margin-top: .4rem;
}
.auth-btn:hover { opacity: .88; }
.auth-btn:disabled { opacity: .45; cursor: not-allowed; }

.auth-error {
  margin-top: .8rem;
  text-align: center;
  font-size: .78rem;
  color: var(--danger);
  min-height: 1.1rem;
}

.auth-footer {
  margin-top: 1.4rem;
  text-align: center;
  font-size: .68rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ─────────── EDITOR HEADER ─────────── */
.editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .65rem 1.2rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
}
.editor-header-left { display: flex; align-items: center; gap: .6rem; }
.logo-sm { font-size: 1.25rem; }
.title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
}
.editor-header-right { display: flex; align-items: center; gap: .75rem; }
.user-badge {
  font-size: .72rem;
  color: var(--text-muted);
  background: var(--bg-input);
  padding: .28rem .7rem;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.btn-icon {
  background: none;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 1rem;
  padding: .3rem .55rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all .15s;
}
.btn-icon:hover { color: var(--danger); border-color: var(--danger); }

/* ─────────── EDITOR BODY ─────────── */
.editor-body {
  display: flex;
  flex: 1;
  min-height: 0;
  padding: .65rem;
  gap: .65rem;
}
.panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg-panel);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 0;
}
.panel-divider {
  width: 1px;
  background: var(--border-subtle);
  margin: 0 .1rem;
  flex-shrink: 0;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .55rem .85rem;
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
  flex-wrap: wrap;
  gap: .4rem;
}
.panel-label {
  font-size: .7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--text-muted);
}
.char-count {
  font-size: .68rem;
  color: var(--text-muted);
}

/* ─────────── TOOLBAR ─────────── */
.toolbar { display: flex; gap: .25rem; align-items: center; flex-wrap: wrap; }
.toolbar button {
  background: none;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-size: .82rem;
  padding: .22rem .45rem;
  border-radius: 5px;
  cursor: pointer;
  font-family: var(--font-mono);
  transition: all .15s;
}
.toolbar button:hover { background: var(--accent-glow); color: var(--accent); border-color: var(--accent); }
.toolbar .sep { width: 1px; height: 14px; background: var(--border-subtle); margin: 0 .2rem; }

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .28rem .72rem;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-input);
  color: var(--text);
  font-size: .72rem;
  font-weight: 500;
  cursor: pointer;
  transition: all .18s;
}
.copy-btn:hover { background: var(--accent-glow); border-color: var(--accent); }
.copy-btn.copied {
  background: rgba(52,211,153,.12);
  border-color: var(--success);
  color: var(--success);
}

/* ─────────── TEXTAREA ─────────── */
#editor-textarea {
  flex: 1;
  width: 100%;
  padding: .9rem 1rem;
  border: none;
  outline: none;
  resize: none;
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: .86rem;
  line-height: 1.7;
  tab-size: 2;
  min-height: 0;
}
#editor-textarea::placeholder { color: var(--text-muted); opacity: .45; }

/* ─────────── PREVIEW ─────────── */
.preview-content {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 1.1rem;
  font-size: .92rem;
  line-height: 1.7;
  color: var(--text);
  word-wrap: break-word;
}
.preview-content:empty::before {
  content: 'Предпросмотр сообщения появится здесь…';
  color: var(--text-muted);
  opacity: .45;
  font-style: italic;
}

/* Telegram-style rendering */
.preview-content .tg-bold { font-weight: 700; }
.preview-content .tg-italic { font-style: italic; }
.preview-content .tg-underline { text-decoration: underline; }
.preview-content .tg-strike { text-decoration: line-through; }
.preview-content .tg-spoiler {
  background: var(--text);
  color: transparent;
  border-radius: 3px;
  padding: 0 3px;
  cursor: pointer;
  transition: all .25s;
}
.preview-content .tg-spoiler.revealed { background: var(--accent-glow); color: var(--text); }
.preview-content .tg-code {
  font-family: var(--font-mono);
  font-size: .82rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  padding: .1rem .35rem;
  border-radius: 4px;
  color: var(--accent);
}
.preview-content .tg-pre {
  font-family: var(--font-mono);
  font-size: .82rem;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: .7rem .85rem;
  margin: .55rem 0;
  overflow-x: auto;
  white-space: pre;
  line-height: 1.55;
  color: var(--accent);
}
.preview-content .tg-quote {
  border-left: 3px solid var(--accent);
  padding: .2rem .75rem;
  margin: .5rem 0;
  color: var(--text-muted);
}
.preview-content .tg-link {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .15s;
}
.preview-content .tg-link:hover { border-bottom-color: var(--accent); }
.preview-content .tg-list { padding-left: 1.3rem; margin: .4rem 0; }
.preview-content .tg-list li { margin: .15rem 0; }
.preview-content .tg-hr {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: .8rem 0;
}

/* Scrollbar */
.preview-content::-webkit-scrollbar,
#editor-textarea::-webkit-scrollbar { width: 6px; }
.preview-content::-webkit-scrollbar-track,
#editor-textarea::-webkit-scrollbar-track { background: transparent; }
.preview-content::-webkit-scrollbar-thumb,
#editor-textarea::-webkit-scrollbar-thumb { background: var(--border-subtle); border-radius: 3px; }

/* ─────────── RESPONSIVE ─────────── */
@media (max-width: 768px) {
  .editor-body { flex-direction: column; }
  .panel-divider { width: 100%; height: 1px; margin: .1rem 0; }
  .panel { min-height: 42vh; }
  .auth-card { padding: 1.8rem 1.4rem 1.5rem; }
}