/* ============================================================
   Yelin App — Layout + Components
   Uses: theme.css (visual) + layout-config.js (behavior via data-attributes)
   ============================================================ */

/* ===== LOGIN ===== */
.yl-overlay {
  position: fixed; inset: 0;
  background: var(--yl-bg-gradient, rgba(0,0,0,0.7));
  z-index: 1000;
  display: flex; align-items: center; justify-content: center;
  transition: opacity var(--yl-transition);
}
.yl-login-card {
  background: var(--yl-panel-bg);
  color: var(--yl-panel-text);
  padding: 48px 36px 36px;
  border-radius: 24px;
  width: min(380px, 88vw);
  text-align: center;
  box-shadow: 0 24px 80px rgba(0,0,0,0.35), 0 0 0 1px var(--yl-panel-border);
  animation: yl-scale-in 0.4s ease;
}
@keyframes yl-scale-in { from { opacity:0; transform: scale(0.92); } to { opacity:1; transform: scale(1); } }
.yl-login-avatar {
  width: 72px; height: 72px; border-radius: 50%;
  background: var(--yl-accent-subtle); color: var(--yl-accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 32px; margin: 0 auto 16px;
}
.yl-login-title { font-size: 24px; font-weight: 700; color: var(--yl-accent); margin-bottom: 4px; }
.yl-login-subtitle { font-size: 13px; opacity: 0.5; margin-bottom: 28px; }
.yl-login-field { margin-bottom: 12px; text-align: left; }
.yl-login-field label { display: block; font-size: 12px; opacity: 0.5; margin-bottom: 4px; padding-left: 4px; }
.yl-login-input {
  width: 100%; padding: 11px 14px;
  border: 1px solid var(--yl-input-border); border-radius: 12px;
  background: var(--yl-input-bg); color: var(--yl-input-text);
  font-size: 15px; outline: none;
  transition: border-color var(--yl-transition);
}
.yl-login-input:focus { border-color: var(--yl-accent); }
.yl-login-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; font-size: 13px; }
.yl-login-remember { opacity: 0.6; cursor: pointer; display: flex; align-items: center; gap: 4px; }
.yl-login-remember input { accent-color: var(--yl-accent); }
.yl-login-forgot { color: var(--yl-accent); cursor: pointer; opacity: 0.7; }
.yl-login-forgot:hover { opacity: 1; }
.yl-login-btn {
  width: 100%; padding: 13px; font-size: 15px;
  border-radius: 12px; font-weight: 600; letter-spacing: 0.5px;
  background: var(--yl-accent) !important;
  color: var(--yl-accent-text) !important;
  transition: all 0.2s ease;
}
.yl-login-btn:hover { filter: brightness(1.1); transform: translateY(-1px); }
.yl-login-btn:active { transform: translateY(0); filter: brightness(0.95); }
.yl-login-error { color: var(--yl-danger); font-size: 12px; margin-top: 10px; min-height: 18px; }

/* ===== APP SHELL ===== */
.yl-app {
  display: flex; height: 100vh; width: 100%; overflow: hidden;
  background: var(--yl-bg-gradient, var(--yl-bg));
  color: var(--yl-panel-text);
  font-family: var(--yl-font-family);
  transition: background var(--yl-transition), color var(--yl-transition);
}
body {
  background: var(--yl-bg, #1a1b2e);
  color: var(--yl-panel-text);
  transition: background var(--yl-transition);
}

/* ===== HEADER ===== */
.yl-header {
  height: var(--yl-header-height, 56px);
  background: var(--yl-header-bg);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  color: var(--yl-header-text);
  display: flex; align-items: center;
  padding: 0 16px; gap: 12px;
  border-bottom: 1px solid var(--yl-border-color);
  z-index: 10;
}
.yl-header-info { flex: 1; min-width: 0; }
.yl-header-title { font-size: 16px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; letter-spacing: 0.3px; }
.yl-header-status { font-size: 12px; opacity: 0.5; margin-top: 1px; display: flex; align-items: center; gap: 4px; }
.yl-online-dot {
  width: var(--yl-dot-size, 6px); height: var(--yl-dot-size, 6px); border-radius: 50%;
  background: var(--yl-success, #4a8); display: inline-block;
  flex-shrink: 0;
}
.yl-typing-text {
  color: var(--yl-accent); opacity: 0.8;
  animation: yl-typing-pulse 1.5s ease-in-out infinite;
}
@keyframes yl-typing-pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}
.yl-header-actions { display: flex; gap: 6px; align-items: center; }

/* ===== CHAT ===== */
.yl-chat {
  flex: 1; overflow-y: auto; padding: 16px 16px 8px;
  display: flex; flex-direction: column;
  background: var(--yl-chat-bg, transparent);
  overflow-anchor: none;
}
.yl-chat-inner {
  max-width: var(--yl-chat-max-width, 800px);
  width: 100%; margin: 0 auto;
  display: flex; flex-direction: column;
}

/* ===== EMPTY STATE ===== */
.yl-empty-state {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 8px; padding: 40px 20px;
  animation: yl-fade-in 0.6s ease;
}
.yl-empty-avatar {
  width: 72px; height: 72px; border-radius: 50%;
  background: var(--yl-accent-subtle);
  color: var(--yl-accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 30px; margin-bottom: 8px;
  border: 2px solid var(--yl-accent);
  opacity: 0.7;
}
.yl-empty-name {
  font-size: 18px; font-weight: 600;
  color: var(--yl-panel-text); opacity: 0.6;
}
.yl-empty-greeting {
  font-size: 14px; opacity: 0.3;
  font-style: italic;
}

/* ===== MESSAGES ===== */
.yl-msg {
  display: flex; gap: 8px; max-width: 100%;
  align-items: flex-start;
}
.yl-msg + .yl-msg { margin-top: 8px; }
[data-msg-spacing="compact"] .yl-msg + .yl-msg { margin-top: 4px; }
[data-msg-spacing="relaxed"] .yl-msg + .yl-msg { margin-top: 20px; }
.yl-msg.them { align-self: flex-start; max-width: 85%; }
.yl-msg.me { align-self: flex-end; flex-direction: row-reverse; max-width: 85%; }

/* Avatars (controlled by data attributes) */
.yl-msg .yl-avatar {
  width: var(--yl-avatar-them-size, 34px); height: var(--yl-avatar-them-size, 34px);
  border-radius: 50%; background: var(--yl-accent-subtle); color: var(--yl-accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; flex-shrink: 0; overflow: hidden;
  background-size: cover; background-position: center;
}
[data-avatar-them="0"] .yl-msg.them .yl-avatar { display: none; }
[data-avatar-me="0"] .yl-msg.me .yl-avatar { display: none; }

/* Bubbles */
.yl-msg .yl-bubble {
  padding: var(--yl-bubble-padding, 10px 14px);
  border-radius: var(--yl-bubble-radius, 16px);
  line-height: var(--yl-line-height, 1.6);
  word-break: break-word; white-space: pre-wrap;
  transition: background var(--yl-transition);
}
.yl-msg.them .yl-bubble {
  background: var(--yl-bubble-them-bg); color: var(--yl-bubble-them-text);
  border: 1px solid var(--yl-bubble-them-border);
  max-width: var(--yl-bubble-them-width, 75%);
}
.yl-msg.me .yl-bubble {
  background: var(--yl-bubble-me-bg); color: var(--yl-bubble-me-text);
  border: 1px solid var(--yl-bubble-me-border);
  max-width: var(--yl-bubble-me-width, 70%);
}
/* Tail */
[data-bubble-tail="1"] .yl-msg.them .yl-bubble { border-top-left-radius: 4px; }
[data-bubble-tail="1"] .yl-msg.me .yl-bubble { border-top-right-radius: 4px; }

/* Name */
.yl-msg-name { font-size: 11px; color: var(--yl-name-them-color, var(--yl-accent)); margin-bottom: 2px; font-weight: 500; }
.yl-msg.me .yl-msg-name { display: none; }
[data-name-them="0"] .yl-msg.them .yl-msg-name { display: none; }

/* Timestamp */
.yl-msg-ts { font-size: 10px; color: var(--yl-ts-color); margin-top: 3px; opacity: 0; transition: opacity 0.2s; }
[data-ts-mode="below"] .yl-msg-ts { opacity: 1; }
[data-ts-mode="inline"] .yl-msg-ts { opacity: 0.6; display: inline; margin-left: 8px; }
.yl-msg:hover .yl-msg-ts { opacity: 0.7; } /* hover mode (default) */

/* Reroll button */
.yl-msg-actions {
  margin-top: 2px; opacity: 0; transition: opacity 0.2s;
}
.yl-msg:hover .yl-msg-actions { opacity: 0.5; }
.yl-msg-actions:hover { opacity: 1 !important; }
.yl-reroll-btn {
  background: none; border: none; cursor: pointer;
  font-size: 14px; padding: 2px 6px; border-radius: 4px;
  color: var(--yl-ts-color); transition: all 0.15s;
}
.yl-reroll-btn:hover { color: var(--yl-accent); background: var(--yl-accent-subtle); }

/* Label menu (long-press) */
.yl-label-menu {
  background: var(--yl-panel-bg); border: 1px solid var(--yl-panel-border);
  border-radius: 10px; padding: 4px; min-width: 160px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.25);
  animation: yl-scale-in 0.15s ease;
}
.yl-label-opt {
  display: block; width: 100%; text-align: left;
  padding: 8px 12px; font-size: 13px;
  background: none; border: none; cursor: pointer;
  color: var(--yl-panel-text); border-radius: 8px;
  transition: background 0.15s;
}
.yl-label-opt:hover { background: var(--yl-accent-subtle); }

/* Delivery status */
.yl-msg-status { font-size: 10px; margin-top: 2px; }
.yl-msg-status[data-s="sending"] { color: var(--yl-ts-color); }
.yl-msg-status[data-s="sending"]::after { content: " …"; }
.yl-msg-status[data-s="delivered"] { color: var(--yl-success, #4a8); }
.yl-msg-status[data-s="delivered"]::after { content: " \2713"; }
.yl-msg-status[data-s="failed"] { color: var(--yl-danger, #d44); cursor: pointer; }
.yl-msg-status[data-s="failed"]::after { content: " \26A0 重试"; }

/* System msg */
.yl-msg-system { text-align: center; align-self: center; padding: 2px 0; }
.yl-msg-system .yl-bubble {
  display: inline-block; background: var(--yl-system-bg); color: var(--yl-system-text);
  font-size: 12px; border: none; padding: 3px 12px; border-radius: 10px; max-width: 80%;
}

/* Typing indicator */
.yl-typing {
  padding: 8px 16px; align-self: flex-start;
}
.yl-typing-dots {
  display: flex; gap: 5px; padding: 10px 16px;
  background: var(--yl-bubble-them-bg);
  border: 1px solid var(--yl-bubble-them-border);
  border-radius: 18px;
}
.yl-typing-dots span {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--yl-bubble-them-text, var(--yl-accent)); opacity: 0.25;
  animation: yl-dot 1.4s infinite ease-in-out;
}
.yl-typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.yl-typing-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes yl-dot {
  0%,80%,100% { opacity: 0.15; transform: scale(0.7) translateY(0); }
  40% { opacity: 0.8; transform: scale(1) translateY(-3px); }
}

/* Tool result card */
.yl-tool-card {
  background: var(--yl-accent-subtle); border: 1px solid var(--yl-accent);
  border-radius: 12px; padding: 10px 14px; margin-top: 4px; font-size: 13px;
}

/* ===== COMPOSER ===== */
.yl-composer {
  padding: 10px 16px 14px; border-top: 1px solid var(--yl-border-color);
  background: var(--yl-bg-secondary);
}
.yl-composer-wrap {
  max-width: var(--yl-chat-max-width, 800px);
  margin: 0 auto;
}
.yl-composer-inner {
  display: flex; gap: 6px; align-items: flex-end;
  background: var(--yl-input-bg); border: 1px solid var(--yl-input-border);
  border-radius: var(--yl-input-radius, 20px);
  padding: 6px 8px 6px 14px;
  transition: border-color var(--yl-transition);
}
.yl-composer-inner:focus-within {
  border-color: var(--yl-accent);
  box-shadow: 0 0 0 2px rgba(196,154,108,0.1);
}

/* Action buttons bar */
.yl-action-bar {
  display: flex; gap: 2px; align-items: center;
}
/* Position variants */
[data-actions-pos="right"] .yl-composer-inner { flex-direction: row; }
[data-actions-pos="left"] .yl-action-bar { order: -1; }
[data-actions-pos="below"] .yl-action-bar {
  margin-top: 6px; padding: 0 4px;
}
[data-actions-pos="below"] .yl-composer-wrap {
  display: flex; flex-direction: column;
}

.yl-action-btn {
  width: 32px; height: 32px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  background: transparent; border: none; color: var(--yl-sidebar-text);
  cursor: pointer; font-size: 16px; opacity: 0.5;
  transition: all var(--yl-transition);
}
.yl-action-btn:hover { opacity: 1; background: var(--yl-accent-subtle); }

.yl-input {
  flex: 1; background: transparent; color: var(--yl-input-text);
  border: none; font-family: var(--yl-font-family, inherit);
  font-size: 1rem; line-height: 1.5;
  min-height: 24px; max-height: 120px;
  resize: none; outline: none; padding: 4px 0;
  transition: height 0.15s ease;
  overflow-y: auto;
}
.yl-input::placeholder { color: var(--yl-ts-color); opacity: 0.7; }

.yl-send-btn {
  width: var(--yl-send-size, 36px); height: var(--yl-send-size, 36px);
  min-width: var(--yl-send-size, 36px);
  border-radius: var(--yl-send-radius, 50%);
  background: var(--yl-send-bg, var(--yl-accent));
  color: var(--yl-send-text, #fff);
  border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; transition: all var(--yl-transition);
}
.yl-send-btn:hover { background: var(--yl-accent-hover); transform: scale(1.05); }
.yl-send-btn:active { transform: scale(0.88); }

/* Fact brain toggle */
.yl-fact-toggle {
  width: 32px; height: 32px; min-width: 32px;
  border: none; border-radius: 8px; cursor: pointer;
  background: transparent; font-size: 16px;
  opacity: 0.3; transition: all 0.2s;
  display: flex; align-items: center; justify-content: center;
  filter: grayscale(1);
}
.yl-fact-toggle:hover { opacity: 0.6; }
.yl-fact-toggle.active {
  opacity: 1; filter: grayscale(0);
  background: var(--yl-accent-subtle);
}

/* Voice + Image buttons */
.yl-voice-btn, .yl-image-btn {
  width: 32px; height: 32px; min-width: 32px;
  border: none; border-radius: 8px; cursor: pointer;
  background: transparent; font-size: 15px;
  opacity: 0.35; transition: all 0.2s;
  display: flex; align-items: center; justify-content: center;
}
.yl-voice-btn:hover, .yl-image-btn:hover { opacity: 0.7; }
.yl-voice-btn.recording {
  opacity: 1; background: var(--yl-danger);
  animation: yl-pulse 1s infinite;
}
@keyframes yl-pulse { 0%,100%{opacity:0.8} 50%{opacity:1} }

/* ===== SETTINGS PANEL ===== */
.yl-settings-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 500; opacity: 0; visibility: hidden;
  transition: opacity var(--yl-transition), visibility var(--yl-transition);
}
.yl-settings-overlay.open { opacity: 1; visibility: visible; }

/* Slide mode (default) */
.yl-settings-panel {
  position: fixed; top: 0; height: 100vh;
  width: var(--yl-settings-width, 420px); max-width: 100vw;
  background: var(--yl-panel-bg); color: var(--yl-panel-text);
  overflow-y: auto; z-index: 501;
  transition: transform var(--yl-transition);
}
/* Slide from right (default) */
[data-settings-pos="right"] .yl-settings-panel,
.yl-settings-panel {
  right: 0; transform: translateX(100%);
  border-left: 1px solid var(--yl-panel-border);
}
.yl-settings-overlay.open .yl-settings-panel { transform: translateX(0); }
/* Slide from left */
[data-settings-pos="left"] .yl-settings-panel {
  left: 0; right: auto; transform: translateX(-100%);
  border-left: none; border-right: 1px solid var(--yl-panel-border);
}
[data-settings-pos="left"] .yl-settings-overlay.open .yl-settings-panel { transform: translateX(0); }
/* Center modal mode */
[data-settings-mode="center"] .yl-settings-panel {
  position: relative; top: auto; right: auto;
  margin: auto; height: auto; max-height: 85vh;
  border-radius: 20px; border: 1px solid var(--yl-panel-border);
  transform: scale(0.95); opacity: 0;
}
[data-settings-mode="center"] .yl-settings-overlay {
  display: flex; align-items: center; justify-content: center;
}
[data-settings-mode="center"] .yl-settings-overlay.open .yl-settings-panel { transform: scale(1); opacity: 1; }

.yl-settings-header {
  padding: 14px 16px; border-bottom: 1px solid var(--yl-panel-border);
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; background: var(--yl-panel-bg); z-index: 1;
}
.yl-settings-header h2 { margin: 0; font-size: 18px; font-weight: 700; }
.yl-close-btn { background: none; border: none; color: var(--yl-panel-text); font-size: 22px; cursor: pointer; opacity: 0.5; padding: 4px; }
.yl-close-btn:hover { opacity: 1; }

.yl-settings-tabs { display: flex; border-bottom: 1px solid var(--yl-panel-border); padding: 0 16px; overflow-x: auto; gap: 4px; }
.yl-tab {
  padding: 10px 16px; cursor: pointer; font-size: 13px; white-space: nowrap;
  border-bottom: 2px solid transparent; opacity: 0.5;
  transition: all var(--yl-transition); border-radius: 6px 6px 0 0;
}
.yl-tab:hover { opacity: 0.8; background: var(--yl-accent-subtle); }
.yl-tab.active { opacity: 1; border-bottom-color: var(--yl-accent); color: var(--yl-accent); }
.yl-settings-body { padding: 20px 20px 40px; }

/* Form elements */
.yl-form-group { margin-bottom: 18px; }
.yl-form-label { display: block; font-size: 11px; margin-bottom: 6px; opacity: 0.6; text-transform: uppercase; letter-spacing: 0.5px; font-weight: 600; }
.yl-form-row { display: flex; gap: 6px; align-items: center; }
.yl-text-input, .yl-select-input {
  flex: 1; background: var(--yl-input-bg); color: var(--yl-input-text);
  border: 1px solid var(--yl-input-border); border-radius: 10px;
  padding: 9px 12px; font-size: 14px; outline: none;
  transition: border-color var(--yl-transition), box-shadow var(--yl-transition);
}
.yl-text-input:focus, .yl-select-input:focus {
  box-shadow: 0 0 0 2px rgba(196,154,108,0.15);
}
.yl-text-input:focus, .yl-select-input:focus { border-color: var(--yl-accent); }
.yl-range-input { flex: 1; accent-color: var(--yl-accent); }
.yl-color-input { width: 36px; height: 30px; border: 2px solid var(--yl-border-color); border-radius: 8px; cursor: pointer; padding: 1px; }
.yl-checkbox-row {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; cursor: pointer; padding: 6px 10px;
  border-radius: 8px; transition: background var(--yl-transition);
}
.yl-checkbox-row:hover { background: var(--yl-accent-subtle); }
.yl-checkbox-row input { accent-color: var(--yl-accent); }

/* Button styles */
.yl-btn {
  padding: 7px 14px; border-radius: 8px;
  border: 1px solid var(--yl-border-color);
  background: var(--yl-accent-subtle); color: var(--yl-panel-text);
  cursor: pointer; font-size: 13px;
  transition: all var(--yl-transition);
}
.yl-btn:hover { background: var(--yl-accent); color: var(--yl-accent-text); }
.yl-btn-primary { background: var(--yl-accent); color: var(--yl-accent-text); border-color: var(--yl-accent); }
.yl-btn-primary:hover { background: var(--yl-accent-hover); }
.yl-btn-sm { padding: 4px 10px; font-size: 12px; }
.yl-btn-icon {
  width: 36px; height: 36px; min-width: 36px; padding: 0; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; background: transparent; border: 1px solid transparent;
  color: var(--yl-panel-text); cursor: pointer; opacity: 0.5;
  transition: all var(--yl-transition);
}
.yl-btn-icon:hover { opacity: 1; background: var(--yl-accent-subtle); }

/* ===== NOTICE BAR ===== */
.yl-notice-bar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 9999;
  padding: 8px 16px; background: var(--yl-accent); color: var(--yl-accent-text);
  font-size: 13px; display: flex; align-items: center; justify-content: space-between;
  animation: yl-slide-down 0.3s ease;
}
@keyframes yl-slide-down { from { transform: translateY(-100%); } to { transform: translateY(0); } }

/* ===== OFFLINE ===== */
.yl-offline {
  background: rgba(0,0,0,0.88); flex-direction: column;
  color: #e0d4c8; font-family: serif; z-index: 99999;
}
.yl-offline-msg { font-size: 1.5em; margin-bottom: 12px; }
.yl-offline-sub { font-size: 0.85em; opacity: 0.4; }

/* ===== MEMMETA ===== */
.yl-memmeta-panel {
  position: fixed; top: 56px; right: 12px;
  width: 300px; max-height: 380px; overflow-y: auto;
  background: var(--yl-panel-bg); border: 1px solid var(--yl-panel-border);
  border-radius: 12px; padding: 12px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.2); z-index: 200;
  font-size: 11px; font-family: monospace; white-space: pre-wrap; word-break: break-all;
  color: var(--yl-panel-text);
}

/* ===== THEME GRID (for settings appearance tab) ===== */
.yl-theme-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 18px; }
.yl-theme-card {
  padding: 10px; border-radius: 14px; border: 2px solid var(--yl-border-color);
  cursor: pointer; text-align: center; font-size: 12px;
  transition: all var(--yl-transition);
  font-weight: 500;
}
.yl-theme-card:hover { border-color: var(--yl-accent); transform: scale(1.02); }
.yl-theme-card.active { border-color: var(--yl-accent); background: var(--yl-accent-subtle); }
.yl-theme-card .preview {
  height: 44px; border-radius: 10px; margin-bottom: 8px;
  position: relative; overflow: hidden;
}

/* ===== MOBILE ===== */
@media (max-width: 768px) {
  html { font-size: var(--yl-font-size-mobile, 16px); }
  .yl-settings-panel { width: 100% !important; border: none !important; }
  .yl-msg.them .yl-bubble { max-width: 85%; }
  .yl-msg.me .yl-bubble { max-width: 82%; }
  .yl-chat { padding: 10px 8px; }
  .yl-menu-btn { display: flex !important; }
  .yl-login-card { padding: 32px 24px; }
}
@media (min-width: 769px) {
  .yl-menu-btn { display: none !important; }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: var(--yl-scrollbar-width, 6px); }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--yl-scrollbar-thumb); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--yl-accent); }