<script setup lang="ts">
import { ref, computed } from 'vue'
import IconSet from '@/components/common/IconSet.vue'

const props = defineProps<{
  activeMode: 'observe' | 'analyze' | 'deliver' | 'tasks' | 'settings'
}>()

const emit = defineEmits<{
  'update:activeMode': [value: 'observe' | 'analyze' | 'deliver' | 'tasks' | 'settings']
}>()

const modes = [
  { id: 'tasks' as const, label: '任务', icon: 'list', description: '历史任务与报告' },
  { id: 'observe' as const, label: '观察', icon: 'globe', description: '采集编排与浏览' },
  { id: 'analyze' as const, label: '分析', icon: 'analysis', description: '引擎协作研判' },
  { id: 'deliver' as const, label: '交付', icon: 'document', description: '报告生成导出' },
  { id: 'settings' as const, label: '配置', icon: 'settings', description: '系统设置' },
]

const hoveredMode = ref<string | null>(null)

function selectMode(mode: 'observe' | 'analyze' | 'deliver' | 'tasks' | 'settings') {
  emit('update:activeMode', mode)
}
</script>

<template>
  <nav class="mode-tabs">
    <button
      v-for="mode in modes"
      :key="mode.id"
      class="mode-tab"
      :class="{ 'mode-tab--active': activeMode === mode.id }"
      type="button"
      @click="selectMode(mode.id)"
      @mouseenter="hoveredMode = mode.id"
      @mouseleave="hoveredMode = null"
    >
      <IconSet :type="mode.icon" class="mode-icon" />
      <span class="mode-label">{{ mode.label }}</span>
      <span class="mode-desc">{{ mode.description }}</span>
      <span class="mode-indicator" />
    </button>
  </nav>
</template>

<style scoped>
.mode-tabs {
  display: flex;
  gap: 12px;
  padding: 0 24px;
  margin-bottom: 24px;
}

.mode-tab {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 16px 32px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  background: var(--bg-elevated);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.mode-tab::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.mode-tab:hover::before {
  opacity: 0.08;
}

.mode-tab--active {
  border-color: var(--accent);
  background: var(--bg-elevated);
  box-shadow: 0 0 0 1px var(--accent), var(--shadow-sm);
}

.mode-tab--active::before {
  opacity: 0;
}

.mode-tab:hover {
  transform: translateY(-2px);
  border-color: var(--border-medium);
  box-shadow: var(--shadow-sm);
}

.mode-icon {
  width: 22px;
  height: 22px;
  color: var(--text-muted);
  transition: color 0.3s ease, transform 0.3s ease;
  position: relative;
  z-index: 1;
}

.mode-tab:hover .mode-icon {
  transform: translateY(-1px);
}


.mode-tab--active .mode-icon {
  color: var(--accent);
}

.mode-label {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  position: relative;
  z-index: 1;
  transition: color 0.3s ease;
}

.mode-tab--active .mode-label {
  color: var(--accent);
}

.mode-desc {
  font-size: 11px;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
  transition: color 0.3s ease;
}

.mode-indicator {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background: var(--accent);
  border-radius: var(--radius-full) var(--radius-full) 0 0;
  opacity: 0;
  transition: all 0.3s ease;
}

.mode-tab--active .mode-indicator {
  opacity: 1;
  width: 60px;
}

@media (max-width: 768px) {
  .mode-tabs {
    padding: 0 16px;
    gap: 8px;
  }

  .mode-tab {
    padding: 12px 20px;
  }

  .mode-desc {
    display: none;
  }
}
</style>