/**
 * 图标选择器组件样式
 *
 * 会议图标选择面板，采用毛玻璃效果
 * 支持 4x4 网格布局
 */

/* ========== 会议图标按钮 ========== */
.meeting-icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--tap-icon-sm);
    height: var(--tap-icon-sm);
    background: var(--neutral-50);
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s ease;
    flex-shrink: 0;
    color: var(--neutral-600);
}

.meeting-icon-btn:hover {
    background: var(--brand-primary-soft);
    border-color: var(--brand-primary-border);
    color: var(--brand-primary);
    transform: scale(1.05);
}

@media (pointer: coarse) {
    .meeting-icon-btn {
        width: var(--tap-icon);
        height: var(--tap-icon);
    }
}

/* 图标 SVG 容器 */
.meeting-icon-svg {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.meeting-icon-svg svg {
    width: 100%;
    height: 100%;
}

/* 图标更新动画 */
.meeting-icon-svg.icon-updated {
    animation: icon-bounce 0.3s ease;
}

@keyframes icon-bounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* ========== 打开选择器时提升层级 ========== */
.meeting-item.picker-open,
.active-meeting-card.picker-open {
    z-index: 10;
}

/* ========== 图标选择器面板 ========== */
.icon-picker-anchor {
    position: relative;
}

.icon-picker-panel {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    padding: var(--space-3);
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-lg);
    box-shadow:
        0 10px 40px rgba(0, 0, 0, 0.12),
        0 0 0 1px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    min-width: 200px;
    /* BUG-026: 限制最大高度，超出时内部滚动，避免在小高度视口（笔记本/分屏）下被挤出屏外 */
    max-height: min(360px, calc(100vh - 80px));
    overflow-y: auto;
    animation: picker-in 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes picker-in {
    from {
        opacity: 0;
        transform: translateY(-8px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* BUG-026: 下方空间不足时向上翻转 */
.icon-picker-panel.flip-up {
    top: auto;
    bottom: calc(100% + 8px);
}

/* 标题 */
.icon-picker-header {
    font-size: 11px;
    font-weight: 600;
    color: var(--neutral-400);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-2);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--neutral-100);
}

/* 图标网格 */
.icon-picker-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
}

/* 图标项 */
.icon-picker-item {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.15s ease;
    color: var(--neutral-600);
}

.icon-picker-item svg {
    width: 20px;
    height: 20px;
}

.icon-picker-item:hover {
    background: var(--neutral-100);
    color: var(--neutral-800);
    transform: scale(1.1);
}

.icon-picker-item.selected {
    background: var(--brand-primary-soft);
    border-color: var(--brand-primary);
    color: var(--brand-primary);
}

.icon-picker-item:active {
    transform: scale(0.95);
}

/* ========== 响应式 - 移动端底部面板 ========== */
@media (max-width: 768px) {
    .icon-picker-panel {
        position: fixed;
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        margin: 0;
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        padding: var(--space-4);
        padding-bottom: calc(var(--space-4) + env(safe-area-inset-bottom, 0px));
        animation: picker-slide-up 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }

    @keyframes picker-slide-up {
        from {
            opacity: 0;
            transform: translateY(100%);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .icon-picker-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 8px;
    }

    .icon-picker-item {
        width: 100%;
        height: 48px;
    }

    .icon-picker-item svg {
        width: 24px;
        height: 24px;
    }

    /* 移动端遮罩层 */
    .icon-picker-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.3);
        backdrop-filter: blur(4px);
        z-index: 999;
        animation: fade-in 0.2s ease;
    }

    @keyframes fade-in {
        from { opacity: 0; }
        to { opacity: 1; }
    }
}