/**
 * Plaza-FM Broadcast & Threads UI Style
 * 赛博茶馆全场广播与话题系统 - 前端样式
 * 
 * @version 2.0
 * @date 2026-03-08
 * @authors Xiaoyue_🍵 & Aris_🌬️
 */

:root {
  /* Colors - Cyber Dark Theme */
  --plaza-fm-orange: #FFA500;
  --plaza-fm-orange-dim: rgba(255, 165, 0, 0.05);
  --plaza-fm-green: #10B981;
  --plaza-fm-red: #EF4444;
  --plaza-fm-blue: #3B82F6;
  --plaza-fm-purple: #8B5CF6;
  --plaza-bg-dark: #0D1117;
  --plaza-bg-card: #161B22;
  --plaza-border: #30363D;
  
  /* Layout from Xiaoyue Design Spec v2.0 */
  --sidebar-width: 420px;
  --radius-lg: 16px;
  --header-height: 60px;
  --input-height: 80px;
  --plaza-fm-border-width: 3px;
  --plaza-fm-radius: 8px;
  --plaza-fm-padding: 16px;
  
  /* Visuals & Animation from Design Spec v2.0 */
  --backdrop-blur: 12px;
  --shadow-xl: 0 8px 32px rgba(0,0,0,0.15);
  --slide-curve: cubic-bezier(0.4, 0.0, 0.2, 1);
  --slide-duration: 280ms;
  --message-enter-duration: 200ms;
  --plaza-fm-pulse-duration: 2s;
  /* Typing Indicator 样式 */
  --typing-bg: rgba(240, 242, 245, 0.95);
  --typing-radius: 12px;
  --typing-padding: 8px 12px;
  --typing-max-width: 120px;
  --typing-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  
  /* 圆点样式 */
  --dot-size: 6px;
  --dot-color: #888888;
  --dot-gap: 4px;
  
  /* 动画 */
  --typing-duration: 0.6s;
  --typing-ease: ease-in-out;
}

/* Typing Indicator Styling */
.typing-indicator {
  display: flex;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 200ms ease, transform 200ms ease;
  pointer-events: none;
  margin-bottom: 12px;
  margin-left: 12px;
}

.typing-indicator.visible {
  opacity: 1;
  transform: translateY(0);
}

.typing-bubble {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  padding: var(--typing-padding);
  background: var(--typing-bg);
  border-radius: var(--typing-radius);
  box-shadow: var(--typing-shadow);
  max-width: var(--typing-max-width);
}

.typing-text {
  font-size: 10px;
  color: #666666;
  font-weight: 500;
  font-family: sans-serif;
}

.typing-dots {
  display: flex;
  gap: var(--dot-gap);
  align-items: center;
}

.typing-dot {
  width: var(--dot-size);
  height: var(--dot-size);
  background: var(--dot-color);
  border-radius: 50%;
  animation: typing-bounce var(--typing-duration) var(--typing-ease) infinite;
}

.typing-dot:nth-child(1) { animation-delay: 0ms; }
.typing-dot:nth-child(2) { animation-delay: 150ms; }
.typing-dot:nth-child(3) { animation-delay: 300ms; }

@keyframes typing-bounce {
  0%, 60%, 100% {
    transform: translateY(0);
    opacity: 0.4;
  }
  30% {
    transform: translateY(-4px);
    opacity: 1;
  }
}

/* 移动端优化 */
@media (max-width: 767px) {
  .typing-indicator {
    margin-left: 8px;
  }
  
  .typing-bubble {
    padding: 6px 10px;
  }
  
  .typing-dot {
    width: 5px;
    height: 5px;
  }
}

/* --- Broadcast Animations --- */
@keyframes plaza-fm-pulse {
  0%, 100% { box-shadow: 0 0 15px rgba(255, 165, 0, 0.4); }
  50% { box-shadow: 0 0 25px rgba(255, 165, 0, 0.8); }
}

.plaza-fm-broadcast {
  position: relative;
  border: var(--plaza-fm-border-width) solid var(--plaza-fm-orange);
  border-radius: var(--plaza-fm-radius);
  padding: var(--plaza-fm-padding);
  margin: 16px auto;
  background: var(--plaza-fm-orange-dim);
  animation: plaza-fm-enter 0.5s ease-out, plaza-fm-pulse var(--plaza-fm-pulse-duration) infinite ease-in-out 0.5s;
  transition: all 0.3s var(--plaza-transition);
  max-width: 600px;
}

@keyframes plaza-fm-enter {
  0% { opacity: 0; transform: translateY(-30px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* --- Message Card Styles --- */
.message-card {
  border: 1px solid var(--plaza-border);
  background: var(--plaza-bg-card);
  transition: all 0.2s var(--plaza-transition);
  border-radius: 8px;
  position: relative;
}

.message-card:hover {
  border-color: var(--plaza-fm-blue);
  transform: translateX(4px);
}

/* --- Threads UI Styles (NEW) --- */
.thread-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--slide-duration) ease;
  z-index: 65;
}

.thread-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

#thread-modal {
  z-index: 70;
}

#thread-modal .h-full {
  width: var(--sidebar-width) !important;
  max-width: 100%;
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(var(--backdrop-blur));
  background: rgba(13, 17, 23, 0.95);
  transition: transform var(--slide-duration) var(--slide-curve);
  display: flex;
  flex-direction: column;
}

#thread-modal .message-card {
  border-left-width: 3px;
  border-left-color: var(--plaza-fm-blue);
  margin-bottom: 12px;
  background: rgba(30, 35, 45, 0.6);
  animation: thread-message-enter var(--message-enter-duration) var(--slide-curve);
}

@keyframes thread-message-enter {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Thread Input Area */
.thread-input-container {
  background: rgba(22, 27, 34, 0.9);
  border-top: 1px solid var(--plaza-border);
  padding: 16px;
}

.thread-input-wrapper {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

.thread-input-field {
  background: var(--plaza-bg-dark);
  border: 1px solid var(--plaza-border);
  border-radius: 8px;
  padding: 10px 14px;
  color: white;
  width: 100%;
  resize: none;
  font-family: inherit;
  font-size: 14px;
  line-height: 1.5;
  max-height: 120px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.thread-input-field:focus {
  outline: none;
  border-color: var(--plaza-fm-blue);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.thread-send-btn {
  background: var(--plaza-fm-blue);
  color: white;
  border: none;
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
}

.thread-send-btn:hover:not(:disabled) {
  background: #2563EB;
  transform: translateY(-1px);
}

.thread-send-btn:active:not(:disabled) {
  transform: translateY(0);
}

.thread-send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  filter: grayscale(1);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #30363d;
  border-radius: 10px;
}

/* --- Mobile Fixes --- */
@media (max-width: 768px) {
  #thread-modal .h-full {
    width: 100% !important;
    border-radius: 0;
  }
}