/* hud.css —— HUD 样式（准星、hitmarker、弹药、姿态、feed、统计） */

#hud-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 50;
}

/* ADS 边缘模糊层：用 backdrop-filter + 径向遮罩实现“中心清晰、半径外高斯模糊” */
.ads-blur {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    backdrop-filter: blur(var(--ads-blur-strength, 6px));
    -webkit-backdrop-filter: blur(var(--ads-blur-strength, 6px));
    -webkit-mask-image: radial-gradient(
        circle at 50% 50%,
        transparent 0,
        transparent var(--ads-blur-radius, 180px),
        #000 calc(var(--ads-blur-radius, 180px) + 40px),
        #000 100%
    );
    mask-image: radial-gradient(
        circle at 50% 50%,
        transparent 0,
        transparent var(--ads-blur-radius, 180px),
        #000 calc(var(--ads-blur-radius, 180px) + 40px),
        #000 100%
    );
}

/* 准星（容器为 0 尺寸，子元素以中心为原点绝对定位） */
.crosshair {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    pointer-events: none;
    z-index: 2;
    --gap: 6px;
    --length: 8px;
    --thickness: 2px;
    --dot-size: 2px;
    --triangle-size: 8px;
    --circle-size: 28px;
    --color: #00ff88;
}

.crosshair svg {
    display: block;
}

/* 十字线段：四段以中心为原点，按 gap 与 length 展开 */
.crosshair-part {
    position: absolute;
    background: var(--color);
    box-shadow: 0 0 2px rgba(0, 0, 0, 0.8);
}

.crosshair-top {
    width: var(--thickness);
    height: var(--length);
    left: calc(var(--thickness) / -2);
    bottom: var(--gap);
}

.crosshair-bottom {
    width: var(--thickness);
    height: var(--length);
    left: calc(var(--thickness) / -2);
    top: var(--gap);
}

.crosshair-left {
    width: var(--length);
    height: var(--thickness);
    top: calc(var(--thickness) / -2);
    right: var(--gap);
}

.crosshair-right {
    width: var(--length);
    height: var(--thickness);
    top: calc(var(--thickness) / -2);
    left: var(--gap);
}

/* 中心圆点 */
.crosshair-dot {
    position: absolute;
    width: var(--dot-size);
    height: var(--dot-size);
    left: calc(var(--dot-size) / -2);
    top: calc(var(--dot-size) / -2);
    border-radius: 50%;
    background: var(--color);
    box-shadow: 0 0 2px rgba(0, 0, 0, 0.8);
}

/* 外圈 */
.crosshair-circle {
    position: absolute;
    width: var(--circle-size);
    height: var(--circle-size);
    left: calc(var(--circle-size) / -2);
    top: calc(var(--circle-size) / -2);
    box-sizing: border-box;
    border: var(--thickness) solid var(--color);
    border-radius: 50%;
    box-shadow: 0 0 2px rgba(0, 0, 0, 0.8);
}

/* 小三角指示：中心上方一个空心朝上的三角（无底边，仅两条斜边，形似 ^） */
.crosshair-triangle {
    position: absolute;
    width: var(--triangle-size);
    height: calc(var(--triangle-size) / 2);
    left: calc(var(--triangle-size) / -2);
    bottom: var(--gap);
}

.crosshair-triangle::before,
.crosshair-triangle::after {
    content: "";
    position: absolute;
    bottom: 0;
    width: calc(var(--triangle-size) * 0.7071);
    height: var(--thickness);
    background: var(--color);
    box-shadow: 0 0 2px rgba(0, 0, 0, 0.8);
}

.crosshair-triangle::before {
    left: 0;
    transform-origin: left center;
    transform: rotate(-45deg);
}

.crosshair-triangle::after {
    right: 0;
    transform-origin: right center;
    transform: rotate(45deg);
}

/* hitmarker */
.hitmarker {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 51;
}

.hitmarker svg {
    display: block;
}

/* 击杀提示：准星处红色叉叉（两段旋转线段组成 ×） */
.killmarker {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    pointer-events: none;
    z-index: 53;
    opacity: 0;
    --killmarker-size: 18px;
    --killmarker-thickness: 3px;
    --killmarker-color: #ff2222;
}

.killmarker-line {
    position: absolute;
    left: calc(var(--killmarker-thickness) / -2);
    top: calc(var(--killmarker-size) / -2);
    width: var(--killmarker-thickness);
    height: var(--killmarker-size);
    background: var(--killmarker-color);
    box-shadow: 0 0 4px rgba(0, 0, 0, 0.9);
    transform-origin: center;
}

.killmarker-line-a {
    transform: rotate(45deg);
}

.killmarker-line-b {
    transform: rotate(-45deg);
}

/* 弹药显示 */
.ammo-display {
    position: absolute;
    bottom: 30px;
    right: 40px;
    text-align: right;
    font-family: "Consolas", monospace;
    color: #fff;
    text-shadow: 0 0 4px rgba(0, 0, 0, 0.8);
}

.ammo-display .ammo-mag {
    font-size: 42px;
    font-weight: bold;
    line-height: 1;
}

.ammo-display .ammo-mag.low {
    color: #ff6644;
}

.ammo-display .ammo-mag.reloading {
    color: #ffaa00;
}

.ammo-display .ammo-reserve {
    font-size: 18px;
    color: #aabbcc;
    margin-top: 4px;
}

.ammo-display .ammo-mode {
    font-size: 12px;
    color: #667788;
    margin-top: 2px;
}

/* 换弹进度环 */
.reload-ring {
    position: absolute;
    bottom: 30px;
    right: 40px;
    width: 80px;
    height: 80px;
    pointer-events: none;
}

/* 左下角状态面板（姿态/动作 + 罗盘） */
.status-panel {
    position: absolute;
    bottom: 24px;
    left: 32px;
    font-family: "Consolas", monospace;
    color: #cfe0f0;
    text-shadow: 0 0 4px rgba(0, 0, 0, 0.8);
    user-select: none;
}

.status-panel .status-line {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.status-panel .status-pose {
    font-size: 20px;
    font-weight: bold;
    color: #fff;
}

.status-panel .status-move {
    font-size: 13px;
    color: #9fb4c8;
}

/* 罗盘：圆形刻度盘，盘随朝向旋转，顶部固定指针 */
.compass {
    position: relative;
    width: 120px;
    height: 120px;
    margin-top: 10px;
    border-radius: 50%;
    overflow: hidden;
    background: radial-gradient(circle at 50% 50%,
        rgba(0, 25, 40, 0.55) 0%,
        rgba(0, 0, 0, 0.45) 70%,
        rgba(0, 0, 0, 0.6) 100%);
    border: 2px solid rgba(100, 200, 255, 0.25);
    box-shadow: inset 0 0 18px rgba(0, 0, 0, 0.7);
}

.compass-track {
    position: absolute;
    inset: 0;
    will-change: transform;
}

.compass-tick {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 2px;
    height: 7px;
    margin-left: -1px;
    margin-top: -3.5px;
    background: rgba(200, 220, 240, 0.45);
}

.compass-tick.major {
    height: 11px;
    margin-top: -5.5px;
    background: rgba(220, 235, 255, 0.9);
}

.compass-label {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 24px;
    height: 14px;
    margin-left: -12px;
    margin-top: -7px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    line-height: 1;
    color: #9fb4c8;
    white-space: nowrap;
}

.compass-label.cardinal {
    font-size: 13px;
    font-weight: bold;
    color: #fff;
}

.compass-pointer {
    position: absolute;
    top: 1px;
    left: 50%;
    width: 0;
    height: 0;
    transform: translateX(-50%);
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 8px solid #00ddff;
    filter: drop-shadow(0 0 4px #00ddff);
    z-index: 3;
}

.compass-hub {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 8px;
    height: 8px;
    margin: -4px 0 0 -4px;
    border-radius: 50%;
    background: #00ddff;
    box-shadow: 0 0 8px #00ddff;
    z-index: 3;
}

.compass-readout {
    margin-top: 4px;
    font-size: 12px;
    color: #00ddff;
}

/* 击杀 feed */
.kill-feed {
    position: absolute;
    top: 80px;
    right: 40px;
    text-align: right;
    color: #fff;
    font-size: 14px;
    text-shadow: 0 0 4px rgba(0, 0, 0, 0.8);
}

.feed-item {
    background: rgba(0, 0, 0, 0.4);
    padding: 4px 12px;
    margin-bottom: 4px;
    border-radius: 4px;
    border-left: 3px solid #ff6644;
    transition: opacity 0.3s;
}

/* 统计面板 */
.stats-panel {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(0, 0, 0, 0.5);
    padding: 12px 16px;
    border-radius: 6px;
    border: 1px solid rgba(100, 200, 255, 0.2);
    font-size: 13px;
    color: #aabbcc;
    min-width: 160px;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 4px;
}

.stat-row:last-child {
    margin-bottom: 0;
}

.stat-row span:last-child {
    color: #00ddff;
    font-family: monospace;
    font-weight: bold;
}