/*
SPDX-FileCopyrightText: Copyright (c) 2025 NVIDIA CORPORATION. All rights reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

SPDX-License-Identifier: Apache-2.0
*/

/* ==================== Theme Variables ==================== */
/* Note: --nv-green is inherited from base.css */

:root {
  --version-badge-text: #ffffff;
  --version-badge-hover: var(--nv-green-hover, #689f00);
  --version-dropdown-bg: #ffffff;
  --version-dropdown-border: #e0e0e0;
  --version-dropdown-shadow: rgba(0, 0, 0, 0.15);
  --version-item-text: #333333;
  --version-item-border: #f0f0f0;
  --version-item-hover-bg: var(--tab-hover-bg);
  --version-item-hover-text: var(--nv-green-hover, #689f00);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-mode="light"]) {
    --version-badge-text: #1a1a1a;
    --version-badge-hover: #b5e082;
    --version-dropdown-bg: rgba(0, 0, 0, 1);
    --version-dropdown-border: var(--annotation-border);
    --version-dropdown-shadow: var(--annotation-shadow);
    --version-item-text: var(--annotation-text);
    --version-item-border: #404040;
    --version-item-hover-bg: var(--tab-hover-bg);
    --version-item-hover-text: var(--nv-green-hover, #689f00);
  }
}

html[data-theme="dark"] {
  --version-badge-text: #1a1a1a;
  --version-badge-hover: #b5e082;
  --version-dropdown-bg: rgba(0, 0, 0, 1);
  --version-dropdown-border: var(--annotation-border);
  --version-dropdown-shadow: var(--annotation-shadow);
  --version-item-text: var(--annotation-text);
  --version-item-border: #404040;
  --version-item-hover-bg: var(--tab-hover-bg);
  --version-item-hover-text: var(--nv-green-hover, #689f00);
}

.version-dropdown {
  display: inline-flex;
  align-items: center;
  height: 100%;
  margin: 0;
}

.version-dropdown select {
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  border: 1px solid var(--version-dropdown-border, var(--color-foreground-border, #ccc));
  background: var(--version-dropdown-bg, var(--color-background-secondary, #fff));
  color: var(--version-item-text, #333333);
  font-size: 0.95rem;
  line-height: 1.2;
  vertical-align: middle;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.version-dropdown select:focus {
  outline: none;
  border-color: var(--version-badge-hover, #689f00);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--version-badge-hover, #689f00) 30%, transparent);
}

/* ==================== Component Styles ==================== */

/* Container */
.version-selector-float {
  display: inline-flex;
  align-items: center;
  height: 100%;
  margin: 0;
  position: relative;
}

/* Hidden semantic select for accessibility */
.version-select-hidden {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 1px;
  height: 1px;
}

/* Badge button */
.version-badge {
  background: var(--version-dropdown-bg);
  color: var(--version-item-text);
  border: 2px solid var(--version-dropdown-border, var(--color-foreground-border, #ccc));
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 6px;
  user-select: none;
  font-family: inherit;
}

.version-badge:hover {
  color: var(--version-item-hover-text);
  border: 2px solid var(--version-item-hover-text, var(--color-foreground-border, #ccc));
}

.version-badge:focus {
  outline: 2px solid var(--nv-green);
  outline-offset: 2px;
}

.version-badge::after {
  content: '▼';
  font-size: 0.7rem;
  transition: transform 0.3s ease;
}

.version-selector-float.open .version-badge::after {
  transform: rotate(180deg);
}

/* Dropdown list */
.version-list {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.3s ease, opacity 0.3s ease;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 1000;
  background: var(--version-dropdown-bg);
  border-radius: 8px;
  box-shadow: 0 4px 12px var(--version-dropdown-shadow);
  border: 1px solid var(--version-dropdown-border);
  min-width: 200px;
  pointer-events: none;
}

.version-selector-float.open .version-list {
  max-height: 400px;
  opacity: 1;
  pointer-events: auto;
}

/* Dropdown items */
.version-list a {
  display: block;
  padding: 10px 16px;
  color: var(--version-item-text);
  text-decoration: none;
  transition: all 0.2s ease;
  border-bottom: 1px solid var(--version-item-border);
}

.version-list a:first-child {
  border-radius: 8px 8px 0 0;
}

.version-list a:last-child {
  border-bottom: none;
  border-radius: 0 0 8px 8px;
}

.version-list a:hover {
  color: var(--version-item-hover-text);
  padding-left: 20px;
}

.version-list a.current {
  font-weight: 600;
}