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

:root {
  --bg: #0f0f13;
  --surface: #1a1a24;
  --surface2: #22222f;
  --border: #2e2e40;
  --accent: #7c5cfc;
  --accent-hover: #6a4ef0;
  --text: #e8e8f0;
  --text-muted: #888899;
  --danger: #ff4d6d;
  --success: #34d399;
  --tg-color: #2ca5e0;
  --web-color: #f59e0b;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

body {
  font-family: 'Segoe UI', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Header */
header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

header h1 {
  font-size: 1.1rem;
  font-weight: 700;
  background: linear-gradient(135deg, #7c5cfc, #ec4899);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  margin-left: auto;
  transition: background 0.3s;
}
.status-dot.connected { background: var(--success); }

/* Main layout */
.main {
  display: grid;
  grid-template-columns: 420px 1fr;
  flex: 1;
  overflow: hidden;
}

/* Left panel - post form */
.post-panel {
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.post-form-wrap {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

input[type="text"],
textarea {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.92rem;
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.2s;
  font-family: inherit;
  resize: vertical;
}

input[type="text"]:focus,
textarea:focus {
  border-color: var(--accent);
}

/* Size tags */
.size-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.size-tag {
  display: none;
}

.size-tag + label {
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid var(--border);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  color: var(--text-muted);
  transition: all 0.15s;
  user-select: none;
}

.size-tag:checked + label {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Photo upload */
.drop-zone {
  position: relative;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* input을 드롭존 전체에 투명하게 올려서 모바일도 클릭 가능 */
.drop-zone input[type="file"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  font-size: 0;
}

.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--accent);
  background: rgba(124,92,252,0.07);
  color: var(--accent);
}

.photo-previews {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 10px;
}

.photo-thumb {
  aspect-ratio: 1;
  border-radius: 8px;
  object-fit: cover;
  width: 100%;
}

/* Preview */
.tg-preview {
  background: #17212b;
  border-radius: var(--radius);
  padding: 14px 16px;
  font-size: 0.88rem;
  line-height: 1.6;
  color: #c8d6e5;
  white-space: pre-wrap;
  font-family: inherit;
  min-height: 140px;
  border: 1px solid #2a3a4a;
}

.tg-preview strong { color: #fff; }
.tg-preview em { color: #a0b8d0; }
.tg-preview code { background: rgba(255,255,255,0.08); border-radius: 4px; padding: 1px 5px; }
.tg-preview blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 10px;
  color: #8aafc8;
}

.tg-preview-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(44,165,224,0.15);
  border: 1px solid var(--tg-color);
  color: var(--tg-color);
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 8px;
  cursor: default;
}

.submit-btn {
  background: linear-gradient(135deg, var(--accent), #ec4899);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 13px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  width: 100%;
}

.submit-btn:hover { opacity: 0.9; }
.submit-btn:active { transform: scale(0.98); }
.submit-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Right panel - chat */
.chat-panel {
  display: grid;
  grid-template-columns: 260px 1fr;
  overflow: hidden;
}

/* Session list */
.session-list {
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.session-list .panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.unread-total {
  background: var(--accent);
  color: #fff;
  border-radius: 10px;
  font-size: 0.72rem;
  padding: 1px 7px;
  display: none;
}

.session-items {
  flex: 1;
  overflow-y: auto;
}

.session-item {
  padding: 12px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.session-item:hover { background: var(--surface2); }
.session-item.active { background: rgba(124,92,252,0.15); }

.session-item-top {
  display: flex;
  align-items: center;
  gap: 6px;
}

.session-name {
  font-size: 0.88rem;
  font-weight: 600;
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.session-badge {
  background: var(--accent);
  color: #fff;
  border-radius: 10px;
  font-size: 0.7rem;
  padding: 1px 6px;
  display: none;
}

.session-badge.show { display: inline; }

.session-type-tag {
  font-size: 0.65rem;
  font-weight: 700;
  border-radius: 4px;
  padding: 1px 5px;
  text-transform: uppercase;
}

.session-type-tag.telegram { background: rgba(44,165,224,0.2); color: var(--tg-color); }
.session-type-tag.website { background: rgba(245,158,11,0.2); color: var(--web-color); }

.session-time {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* Chat window */
.chat-window {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.chat-header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.chat-header-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.chat-empty {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.msg-bubble {
  max-width: 72%;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 0.88rem;
  line-height: 1.5;
  word-break: break-word;
}

.msg-bubble.user {
  background: var(--surface2);
  border: 1px solid var(--border);
  align-self: flex-start;
}

.msg-bubble.admin {
  background: linear-gradient(135deg, #5b3fc7, #3b2a8c);
  align-self: flex-end;
}

.msg-sender {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.msg-time {
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-top: 4px;
  text-align: right;
}

.chat-input-area {
  padding: 14px 16px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.chat-input {
  flex: 1;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 0.9rem;
  padding: 10px 14px;
  outline: none;
  font-family: inherit;
  resize: none;
  max-height: 120px;
}

.chat-input:focus { border-color: var(--accent); }

.send-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 10px 18px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s;
}

.send-btn:hover { opacity: 0.85; }
.send-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* Scrollbars */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 18px;
  font-size: 0.88rem;
  color: var(--text);
  box-shadow: var(--shadow);
  transform: translateY(80px);
  opacity: 0;
  transition: all 0.3s;
  z-index: 9999;
  max-width: 300px;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast.success { border-color: var(--success); }
.toast.error { border-color: var(--danger); }