/* ═══════════════════════════════════════════════════════════
   🐱 猫咪画板 - 极简初音主题样式
   ═══════════════════════════════════════════════════════════ */

/* 重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 配色方案 */
:root {
    --miku-cyan: #39C5BB;
    --miku-pink: #E87FB6;
    --bg-color: #F0F8F8;
    --white: #FFFFFF;
    --shadow: rgba(57, 197, 187, 0.2);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    position: relative;
    overflow-x: hidden;
    cursor: url('/cursor.png') 0 0, auto;
}

/* 初音背景装饰 */
.miku-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        linear-gradient(135deg, var(--miku-cyan) 0%, var(--miku-pink) 100%);
    opacity: 0.05;
    z-index: -1;
    pointer-events: none;
}

/* 猫爪脚印装饰 */
.paw-prints {
    position: fixed;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.paw {
    position: absolute;
    font-size: 24px;
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.paw:nth-child(1) { top: 10%; left: 5%; animation-delay: 0s; }
.paw:nth-child(2) { top: 30%; right: 10%; animation-delay: 2s; }
.paw:nth-child(3) { bottom: 20%; left: 15%; animation-delay: 4s; }

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(10deg); }
}

/* 主容器 */
.container {
    background: var(--white);
    border-radius: 30px;
    padding: 40px;
    box-shadow: 0 20px 60px var(--shadow);
    max-width: 1300px;
    width: 100%;
    position: relative;
    z-index: 1;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 标题区 */
header {
    text-align: center;
    margin-bottom: 30px;
}

h1 {
    font-size: 2.5em;
    color: var(--miku-cyan);
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px var(--shadow);
}

.subtitle {
    color: var(--miku-pink);
    font-size: 0.95em;
    letter-spacing: 2px;
}

/* 控制面板 */
.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    align-items: center;
    padding: 25px;
    background: var(--bg-color);
    border-radius: 20px;
    margin-bottom: 25px;
    border: 2px solid var(--miku-cyan);
}

.control-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

label {
    font-weight: 600;
    color: var(--miku-cyan);
    font-size: 0.95em;
}

/* 颜色选择器 */
input[type="color"] {
    width: 50px;
    height: 40px;
    border: 2px solid var(--miku-cyan);
    border-radius: 8px;
    cursor: url('/cursor.png') 0 0, auto;
    background: var(--white);
}

input[type="color"]:hover {
    transform: scale(1.05);
    transition: transform 0.2s;
}

/* 滑块 */
input[type="range"] {
    width: 120px;
    height: 6px;
    border-radius: 3px;
    background: var(--miku-cyan);
    outline: none;
    cursor: url('/cursor.png') 0 0, auto;
}

input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--miku-pink);
    cursor: url('/cursor.png') 0 0, auto;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

/* 按钮 */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 12px;
    font-size: 1em;
    font-weight: 600;
    cursor: url('/cursor.png') 0 0, auto;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px var(--shadow);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--shadow);
}

.btn:active {
    transform: translateY(0);
}

.btn-brush {
    background: linear-gradient(135deg, var(--miku-cyan) 0%, #2BA89F 100%);
    color: var(--white);
}

.btn-eraser {
    background: linear-gradient(135deg, var(--miku-pink) 0%, #D66A9E 100%);
    color: var(--white);
}

.btn-clear {
    background: linear-gradient(135deg, #FF6B6B 0%, #EE5A6F 100%);
    color: var(--white);
}

.btn-save {
    background: linear-gradient(135deg, #4FACFE 0%, #00F2FE 100%);
    color: var(--white);
}

.btn-undo {
    background: linear-gradient(135deg, #A8A8A8 0%, #8A8A8A 100%);
    color: var(--white);
}

.btn-redo {
    background: linear-gradient(135deg, #B8B8B8 0%, #9A9A9A 100%);
    color: var(--white);
}

.btn-prev {
    background: linear-gradient(135deg, #9B59B6 0%, #8E44AD 100%);
    color: var(--white);
}

.btn-next {
    background: linear-gradient(135deg, #9B59B6 0%, #8E44AD 100%);
    color: var(--white);
}

.btn-add {
    background: linear-gradient(135deg, #2ECC71 0%, #27AE60 100%);
    color: var(--white);
}

.btn-delete {
    background: linear-gradient(135deg, #E74C3C 0%, #C0392B 100%);
    color: var(--white);
}

.btn-palette {
    background: linear-gradient(135deg, #F39C12 0%, #E67E22 100%);
    color: var(--white);
}

.btn-active {
    box-shadow: 0 0 0 3px var(--white), 0 0 0 5px var(--miku-cyan);
}

/* 调色盘面板 */
.palette-panel {
    background: var(--bg-color);
    border-radius: 20px;
    padding: 20px;
    margin-bottom: 20px;
    border: 2px solid var(--miku-cyan);
    animation: fadeIn 0.3s ease;
}

/* 调色盘头部 */
.palette-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* 笔画粗细包裹层 */
.brush-size-wrapper {
    display: flex;
    justify-content: center;
    margin-top: 15px;
}

/* 笔画粗细控制 */
.brush-size-control {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brush-size-control label {
    font-weight: 600;
    color: var(--miku-cyan);
    white-space: nowrap;
}

.brush-size-control input[type="range"] {
    width: 150px;
    height: 6px;
    border-radius: 3px;
    background: var(--miku-cyan);
    outline: none;
    cursor: url('/cursor.png') 0 0, auto;
}

.brush-size-control input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--miku-pink);
    cursor: url('/cursor.png') 0 0, auto;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

/* 颜色网格 */
.color-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    flex: 1;
}

/* 颜色按钮 */
.color-btn {
    width: 45px;
    height: 45px;
    border: 2px solid var(--miku-cyan);
    border-radius: 8px;
    cursor: url('/cursor.png') 0 0, auto;
    transition: all 0.2s ease;
    position: relative;
    background: var(--white);
}

.color-btn:hover {
    transform: scale(1.15);
    box-shadow: 0 4px 12px var(--shadow);
    z-index: 10;
}

.color-btn.selected {
    box-shadow: 0 0 0 3px var(--white), 0 0 0 5px var(--miku-pink);
    transform: scale(1.1);
}

.color-btn[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--miku-cyan);
    color: var(--white);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8em;
    white-space: nowrap;
    margin-bottom: 8px;
    font-weight: 600;
}

/* 编辑颜色按钮 */
.btn-edit-color {
    background: linear-gradient(135deg, var(--miku-pink) 0%, #D66A9E 100%);
    color: var(--white);
    white-space: nowrap;
    flex-shrink: 0;
}

/* 隐藏的颜色输入框 */
.edit-color-input {
    position: absolute;
    width: 0;
    height: 0;
    opacity: 0;
    pointer-events: none;
}

/* 画布区域 */
.canvas-wrapper {
    background: var(--white);
    border-radius: 20px;
    padding: 10px;
    border: 3px solid var(--miku-cyan);
    box-shadow: 0 10px 30px var(--shadow);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: visible;
}

/* 初音角色图 */
.miku-character {
    position: absolute;
    right: -230px;
    bottom: -20px;
    height: 500px;
    width: auto;
    pointer-events: none;
    z-index: 10;
    filter: drop-shadow(-5px 5px 15px rgba(57, 197, 187, 0.3));
}

/* 猫咪角色图 */
.cat-character {
    position: absolute;
    left: -40px;
    top: -30px;
    height: 125px;
    width: auto;
    pointer-events: none;
    z-index: 10;
    filter: drop-shadow(3px 3px 8px rgba(232, 127, 182, 0.4));
}

/* 画布管理控制 */
.canvas-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-top: 20px;
    padding: 15px 25px;
    background: var(--bg-color);
    border-radius: 15px;
    border: 2px solid var(--miku-cyan);
    flex-wrap: wrap;
}

.canvas-controls .canvas-index {
    font-weight: 600;
    color: var(--miku-cyan);
    min-width: 60px;
    text-align: center;
    font-size: 1em;
}

#canvas {
    display: block;
    cursor: url('/cursor.png') 0 0, auto;
    background: var(--white);
    border-radius: 12px;
    max-width: 100%;
    height: auto;
}

/* 状态提示 */
.status {
    text-align: center;
    margin-top: 20px;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.status.success {
    background: rgba(57, 197, 187, 0.15);
    color: var(--miku-cyan);
    border: 2px solid var(--miku-cyan);
}

.status.error {
    background: rgba(255, 107, 107, 0.15);
    color: #FF6B6B;
    border: 2px solid #FF6B6B;
}

.status.loading {
    background: rgba(79, 172, 254, 0.15);
    color: #4FACFE;
    border: 2px solid #4FACFE;
}

/* Footer */
.footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--bg-color);
}

.footer a {
    color: var(--miku-cyan);
    text-decoration: none;
    font-size: 0.9em;
    transition: opacity 0.3s ease;
}

.footer a:hover {
    opacity: 0.7;
    text-decoration: underline;
}

/* 猫咪弹出动画 */
.cat-popup {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    font-size: 80px;
    z-index: 1000;
    pointer-events: none;
    opacity: 0;
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.cat-popup.show {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
    animation: bounce 0.6s ease;
}

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