*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: system-ui, sans-serif; background: #f5f5f5; color: #333; }

/* === Floating Widget Theme (CSS Variables) === */
:root {
  --fifi-primary: #2563eb;
  --fifi-primary-dark: #1d4ed8;
  --fifi-primary-light: #dbeafe;
  --fifi-text-light: #fff;
  --fifi-font: system-ui, sans-serif;
  --fifi-radius: 16px;
  --fifi-radius-sm: 20px;
  --fifi-btn-size: 60px;
  --fifi-btn-bottom: 24px;
  --fifi-btn-right: 24px;
  --fifi-window-width: 370px;
  --fifi-window-height: 530px;
  --fifi-msg-ai-bg: #e5e7eb;
  --fifi-msg-ai-color: #333;
  --fifi-msg-agent-bg: #dbeafe;
  --fifi-msg-agent-color: #1e40af;
  --fifi-border-color: #d1d5db;
  --fifi-shadow: 0 8px 32px rgba(0,0,0,.18);
  --fifi-shadow-btn: 0 4px 16px rgba(37,99,235,.4);
}

/* === Floating Widget === */
#fifi-widget, #fifi-embed-root { font-family: var(--fifi-font); }

.fifi-toggle {
  position: fixed; bottom: var(--fifi-btn-bottom); right: var(--fifi-btn-right); z-index: 99999;
  width: var(--fifi-btn-size); height: var(--fifi-btn-size); border-radius: 50%;
  background: var(--fifi-primary); color: var(--fifi-text-light); border: none; cursor: pointer;
  box-shadow: var(--fifi-shadow-btn);
  font-size: 26px; display: flex; align-items: center; justify-content: center;
  transition: transform .2s, box-shadow .2s;
}
.fifi-toggle:hover { transform: scale(1.08); box-shadow: 0 6px 24px rgba(37,99,235,.5); }
.fifi-toggle svg { width: 28px; height: 28px; fill: currentColor; }

.fifi-window {
  position: fixed; bottom: calc(var(--fifi-btn-bottom) + var(--fifi-btn-size) + 12px);
  right: var(--fifi-btn-right); z-index: 99998;
  width: var(--fifi-window-width); height: var(--fifi-window-height); border-radius: var(--fifi-radius); overflow: hidden;
  box-shadow: var(--fifi-shadow); background: #fff;
  display: none; flex-direction: column;
  animation: fifiSlideUp .25s ease;
}
.fifi-window.open { display: flex; }
@keyframes fifiSlideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.fifi-header {
  background: var(--fifi-primary); color: var(--fifi-text-light); padding: 14px 18px;
  display: flex; justify-content: space-between; align-items: center;
  cursor: pointer; flex-shrink: 0;
}
.fifi-header h3 { font-size: 15px; font-weight: 600; }
.fifi-header .fifi-close {
  background: none; border: none; color: var(--fifi-text-light); cursor: pointer;
  font-size: 20px; line-height: 1; opacity: .7;
}
.fifi-header .fifi-close:hover { opacity: 1; }

.fifi-messages {
  flex: 1; overflow-y: auto; padding: 12px 16px;
  display: flex; flex-direction: column; gap: 8px;
}
.fifi-msg { max-width: 80%; padding: 8px 14px; border-radius: 16px; font-size: 14px; line-height: 1.4; word-wrap: break-word; }
.fifi-msg.customer { align-self: flex-end; background: var(--fifi-primary); color: var(--fifi-text-light); border-bottom-right-radius: 4px; }
.fifi-msg.ai { align-self: flex-start; background: var(--fifi-msg-ai-bg); color: var(--fifi-msg-ai-color); border-bottom-left-radius: 4px; }
.fifi-msg.agent { align-self: flex-start; background: var(--fifi-primary-light); color: var(--fifi-msg-agent-color); border-bottom-left-radius: 4px; }
.fifi-msg .meta { font-size: 11px; opacity: .7; margin-top: 4px; }

.fifi-input-wrap {
  display: flex; border-top: 1px solid var(--fifi-border-color); padding: 8px; gap: 8px; flex-shrink: 0;
}
.fifi-input-wrap input {
  flex: 1; border: 1px solid var(--fifi-border-color); border-radius: var(--fifi-radius-sm);
  padding: 8px 14px; font-size: 14px; outline: none;
}
.fifi-input-wrap input:focus { border-color: var(--fifi-primary); }
.fifi-input-wrap button {
  background: var(--fifi-primary); color: var(--fifi-text-light); border: none;
  border-radius: var(--fifi-radius-sm); padding: 8px 18px; font-size: 14px; cursor: pointer;
}
.fifi-input-wrap button:disabled { opacity: .5; }

/* === Dashboard Admin === */
.dashboard { max-width: 1000px; margin: 20px auto; padding: 0 16px; }
.dashboard h1 { font-size: 22px; margin-bottom: 16px; }
.dashboard-grid { display: grid; grid-template-columns: 300px 1fr; gap: 16px; min-height: 500px; }
.conv-list { background: #fff; border-radius: 8px; overflow: hidden; box-shadow: 0 1px 4px rgba(0,0,0,.1); }
.conv-item { padding: 12px 16px; border-bottom: 1px solid #f0f0f0; cursor: pointer; }
.conv-item:hover { background: #f9fafb; }
.conv-item.active { background: #eff6ff; }
.conv-item .name { font-weight: 600; font-size: 14px; }
.conv-item .status { font-size: 12px; padding: 2px 8px; border-radius: 10px; display: inline-block; margin-top: 4px; }
.conv-item .status.ai { background: #dbeafe; color: #1e40af; }
.conv-item .status.human { background: #fef3c7; color: #92400e; }
.conv-item .status.closed { background: #e5e7eb; color: #6b7280; }
.chat-panel { background: #fff; border-radius: 8px; box-shadow: 0 1px 4px rgba(0,0,0,.1); display: flex; flex-direction: column; }
.chat-panel .panel-header { padding: 12px 16px; border-bottom: 1px solid #e5e7eb; display: flex; justify-content: space-between; align-items: center; }
.chat-panel .panel-header h3 { font-size: 15px; }
.chat-panel .panel-header button { font-size: 12px; padding: 4px 12px; border-radius: 12px; border: 1px solid #d1d5db; background: #fff; cursor: pointer; }
.chat-panel .panel-header button:hover { background: #f3f4f6; }
.chat-panel .panel-header button.takeover { background: #f59e0b; border-color: #f59e0b; color: #fff; }
.chat-panel .panel-header button.takeover:hover { background: #d97706; }
#panel-messages { flex: 1; height: 400px; overflow-y: auto; padding: 12px 16px; }
.panel-input-wrap { display: flex; padding: 8px; border-top: 1px solid #e5e7eb; gap: 8px; }
.panel-input-wrap input { flex: 1; border: 1px solid #d1d5db; border-radius: 20px; padding: 8px 14px; font-size: 14px; outline: none; }
.panel-input-wrap button { background: #2563eb; color: #fff; border: none; border-radius: 20px; padding: 8px 18px; cursor: pointer; }