/* 粒子艺术系统 - 移动端优化样式 */

/* ===== CSS Custom Properties ===== */
:root {
    --bg-primary: #0a0e27;
    --bg-panel: rgba(15, 23, 42, 0.95);
    --border-subtle: rgba(255, 255, 255, 0.1);
    --border-active: rgba(255, 255, 255, 0.4);
    --text-primary: #fff;
    --text-secondary: #cbd5e0;
    --text-muted: #a0aec0;
    --accent: #4f46e5;
    --accent-glow: rgba(79, 70, 229, 0.3);
    --accent-soft: rgba(79, 70, 229, 0.2);
    --success: #60d0ff;
    --warning: #fbbf24;

    --touch-target-min: 44px;
    --panel-width: 320px;
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
    --safe-right: env(safe-area-inset-right, 0px);
}

* {
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    margin: 0 !important;
    padding: 0 !important;
    overflow: hidden !important;
    background: var(--bg-primary) !important;
    animation: none !important;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    width: 100%;
    height: 100dvh;
    min-height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
}

#particle-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    width: 100dvw;
    height: 100vh;
    height: 100dvh;
    display: block;
    z-index: 1;
    overflow: hidden;
    background: var(--bg-primary);
}

#particle-container canvas {
    display: block;
}

#video-feed {
    display: none;
}

/* ===== 控制面板 ===== */
.control-panel {
    position: fixed;
    right: 0;
    top: 0;
    width: var(--panel-width);
    height: 100vh;
    background: var(--bg-panel);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-left: 1px solid var(--border-subtle);
    padding: calc(20px + var(--safe-top)) calc(20px + var(--safe-right)) 20px 20px;
    overflow-y: auto;
    z-index: 100;
    box-shadow: -2px 0 20px rgba(0, 0, 0, 0.5);
}

.control-panel h3 {
    color: var(--text-primary);
    font-size: 18px;
    margin-bottom: 20px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.control-section {
    margin-bottom: 25px;
}

.control-section label {
    display: block;
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===== 模型网格 ===== */
.model-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.model-btn {
    min-height: var(--touch-target-min);
    padding: 12px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    border-radius: 8px;
    cursor: pointer;
    font-size: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    touch-action: manipulation;
}

.model-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: var(--accent-glow);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

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

.model-btn:active::before {
    width: 150px;
    height: 150px;
    transition: width 0.2s ease, height 0.2s ease;
}

.model-btn:hover {
    border-color: var(--border-active);
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.model-btn:active {
    transform: translateY(0) scale(0.98);
}

.model-btn.active {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: var(--text-primary);
    box-shadow: 0 0 12px var(--accent-glow);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 12px var(--accent-glow);
    }
    50% {
        box-shadow: 0 0 20px rgba(79, 70, 229, 0.5);
    }
}

/* ===== 控件 ===== */
.color-picker-wrapper {
    display: flex;
    gap: 10px;
    align-items: center;
}

#color-picker {
    min-width: var(--touch-target-min);
    min-height: var(--touch-target-min);
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    touch-action: manipulation;
}

.color-value {
    color: var(--text-secondary);
    font-size: 14px;
    flex: 1;
    font-family: monospace;
}

.slider-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.slider-label {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    color: var(--text-muted);
}

input[type="range"] {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    -webkit-appearance: none;
    touch-action: manipulation;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    box-shadow: 0 0 8px var(--accent-glow);
}

input[type="range"]::-moz-range-thumb {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: none;
    box-shadow: 0 0 8px var(--accent-glow);
}

/* ===== 按钮 ===== */
.button-group {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.btn-control {
    min-height: var(--touch-target-min);
    flex: 1;
    padding: 12px 16px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    touch-action: manipulation;
}

.btn-control::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
}

.btn-control:active::after {
    width: 200px;
    height: 200px;
}

.btn-control:hover {
    border-color: var(--border-active);
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.btn-control:active {
    transform: translateY(0) scale(0.98);
}

.btn-control.primary {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: var(--text-primary);
}

.btn-control.primary:hover {
    background: rgba(79, 70, 229, 0.3);
    box-shadow: 0 0 20px rgba(79, 70, 229, 0.4);
}

.sword-toggle-btn {
    min-height: var(--touch-target-min);
    width: 100%;
    text-align: center;
    justify-content: center;
}
.sword-toggle-btn.active {
    border-color: var(--success);
    background: rgba(96, 208, 255, 0.15);
    color: var(--success);
    box-shadow: 0 0 12px rgba(96, 208, 255, 0.2);
}

/* ===== 全屏按钮 ===== */
.fullscreen-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: var(--touch-target-min);
    height: var(--touch-target-min);
    border-radius: 50%;
    background: var(--accent-soft);
    border: 2px solid var(--accent);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 99;
    animation: float 3s ease-in-out infinite;
    touch-action: manipulation;
}

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

.fullscreen-btn:hover {
    background: rgba(79, 70, 229, 0.3);
    box-shadow: 0 0 20px rgba(79, 70, 229, 0.5);
    transform: scale(1.1);
}

.fullscreen-btn:active {
    transform: scale(0.95);
}

/* ===== 手势提示 ===== */
.gesture-hint {
    position: fixed;
    bottom: 30px;
    left: 30px;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 15px 20px;
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.6;
    z-index: 99;
    max-width: 250px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    animation: slideIn 0.5s ease-out;
    transition: all 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.gesture-hint:hover {
    border-color: rgba(79, 70, 229, 0.5);
    box-shadow: 0 0 20px var(--accent-glow);
}

.gesture-hint strong {
    color: var(--accent);
}

/* ===== 滚动条 ===== */
.control-panel::-webkit-scrollbar {
    width: 6px;
}

.control-panel::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

.control-panel::-webkit-scrollbar-thumb {
    background: var(--accent-glow);
    border-radius: 3px;
}

.control-panel::-webkit-scrollbar-thumb:hover {
    background: rgba(79, 70, 229, 0.5);
}

/* ===== 通用动画 ===== */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
.loading { animation: spin 1s linear infinite; }

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.fade-in { animation: fadeIn 0.5s ease-out; }

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}
.scale-in { animation: scaleIn 0.3s ease-out; }

@keyframes glow {
    from { box-shadow: 0 0 5px var(--accent-glow); }
    to { box-shadow: 0 0 20px rgba(79, 70, 229, 0.8); }
}
.glow { animation: glow 2s ease-in-out infinite alternate; }

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

/* ===== Toast ===== */
.ui-error-toast,
.ui-success-toast {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    display: flex;
    align-items: center;
    gap: 8px;
}

.ui-error-toast i,
.ui-success-toast i {
    font-size: 16px;
}

.performance-warning {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(251, 191, 36, 0.9);
    color: #1a1a1a;
    padding: 10px 20px;
    border-radius: 8px;
    z-index: 10000;
    font-size: 14px;
    font-weight: 500;
    animation: fadeIn 0.3s ease;
}

/* ===== 无障碍 ===== */
.btn-control:focus,
.model-btn:focus,
input[type="range"]:focus,
#color-picker:focus,
.fullscreen-btn:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

@media (prefers-contrast: high) {
    .control-panel {
        background: rgba(0, 0, 0, 0.95);
        border-left: 2px solid var(--text-primary);
    }
    .model-btn,
    .btn-control {
        border-width: 2px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========================================
   移动端响应式布局
   ======================================== */

/* 平板和小屏幕 */
@media (max-width: 1024px) {
    :root {
        --panel-width: 280px;
    }
    .control-panel {
        padding-top: calc(16px + var(--safe-top));
    }
}

/* 手机竖屏 */
@media (max-width: 768px) {
    .control-panel {
        width: 100%;
        height: auto;
        bottom: 0;
        right: 0;
        top: auto;
        left: 0;
        border-left: none;
        border-top: 1px solid var(--border-subtle);
        max-height: 45vh;
        padding: calc(12px + var(--safe-top)) calc(16px + var(--safe-left)) calc(16px + var(--safe-bottom)) calc(16px + var(--safe-right));
        border-radius: 16px 16px 0 0;
        box-shadow: 0 -2px 20px rgba(0, 0, 0, 0.5);
        touch-action: manipulation;
    }

    .control-panel h3 {
        font-size: 16px;
        margin-bottom: 12px;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .control-panel h3::after {
        content: '';
        width: 40px;
        height: 4px;
        background: rgba(255, 255, 255, 0.2);
        border-radius: 2px;
    }

    .control-section {
        margin-bottom: 16px;
    }

    .control-section label {
        font-size: 12px;
        margin-bottom: 8px;
    }

    .model-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: 8px;
    }

    .model-btn {
        min-height: 48px;
        padding: 8px 4px;
        font-size: 11px;
        flex-direction: column;
        gap: 4px;
    }

    .model-btn i {
        font-size: 16px;
    }

    .gesture-hint {
        display: none;
    }

    .fullscreen-btn {
        bottom: calc(50vh + 16px);
        right: 16px;
    }
}

/* 小屏手机 */
@media (max-width: 480px) {
    .control-panel {
        max-height: 50vh;
        padding: calc(10px + var(--safe-top)) calc(12px + var(--safe-left)) calc(12px + var(--safe-bottom)) calc(12px + var(--safe-right));
    }

    .control-panel h3 {
        font-size: 15px;
        margin-bottom: 10px;
    }

    .model-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 6px;
    }

    .model-btn {
        min-height: 44px;
        padding: 6px 4px;
        font-size: 10px;
    }

    .model-btn i {
        font-size: 14px;
    }

    .color-picker-wrapper {
        gap: 8px;
    }

    #color-picker {
        width: 44px;
        height: 44px;
    }

    .color-value {
        font-size: 12px;
    }

    .slider-label {
        font-size: 12px;
    }

    .btn-control {
        min-height: 48px;
        padding: 10px 12px;
        font-size: 13px;
    }

    .fullscreen-btn {
        width: 44px;
        height: 44px;
        font-size: 18px;
    }
}

/* 超小屏幕 */
@media (max-width: 360px) {
    .model-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .model-btn {
        min-height: 44px;
    }
}

/* 横屏模式 - 手机 */
@media (max-height: 500px) and (orientation: landscape) {
    .control-panel {
        position: fixed;
        right: 0;
        top: 0;
        bottom: auto;
        left: auto;
        width: 260px;
        height: 100vh;
        max-height: 100vh;
        border-left: 1px solid var(--border-subtle);
        border-top: none;
        border-radius: 0;
        padding: calc(12px + var(--safe-top)) calc(12px + var(--safe-right)) calc(12px + var(--safe-bottom)) calc(12px + var(--safe-left));
    }

    .control-panel h3 {
        font-size: 14px;
        margin-bottom: 8px;
    }

    .control-section {
        margin-bottom: 10px;
    }

    .model-grid {
        grid-template-columns: 1fr 1fr;
        gap: 6px;
    }

    .model-btn {
        min-height: 40px;
        padding: 6px 8px;
        font-size: 11px;
    }

    .btn-control {
        min-height: 40px;
        padding: 8px 12px;
        font-size: 12px;
    }

    .fullscreen-btn {
        bottom: 16px;
        right: calc(260px + 16px);
    }

    .gesture-hint {
        display: none;
    }
}

/* 平板横屏 */
@media (min-width: 769px) and (max-width: 1024px) and (orientation: landscape) {
    .control-panel {
        width: 260px;
    }

    .model-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .model-btn:hover,
    .btn-control:hover {
        transform: none;
    }

    .model-btn:active {
        transform: scale(0.96);
        transition: transform 0.1s ease;
    }

    .btn-control:active {
        transform: scale(0.96);
        transition: transform 0.1s ease;
    }

    .fullscreen-btn:hover {
        transform: none;
    }

    .fullscreen-btn:active {
        transform: scale(0.9);
        transition: transform 0.1s ease;
    }
}

/* 高 DPI 屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .control-panel {
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
    }
}