/* ArenaCast · Base layer
   reset / 排版默认 / 通用工具类 */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    -webkit-text-size-adjust: 100%;
    font-size: 16px;
    scroll-behavior: smooth;
    text-rendering: optimizeLegibility;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-attachment: fixed;
    background-image:
        linear-gradient(140deg,
            var(--c-wash-a) 0%,
            var(--c-wash-b) 48%,
            var(--c-wash-c) 100%);
    color: var(--c-ink);
    font-family: var(--type-body);
    font-weight: 400;
    line-height: 1.55;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* 背景晕染光斑 */
body::before,
body::after {
    border-radius: 50%;
    content: '';
    filter: blur(96px);
    opacity: 0.42;
    pointer-events: none;
    position: fixed;
    z-index: -1;
}

body::before {
    animation: ac-bloom 28s ease-in-out infinite;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.32), transparent 68%);
    bottom: -180px;
    height: 540px;
    right: -120px;
    width: 540px;
}

body::after {
    animation: ac-bloom 32s ease-in-out infinite -8s reverse;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.22), transparent 70%);
    height: 460px;
    left: -140px;
    top: -140px;
    width: 460px;
}

@keyframes ac-bloom {
    0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
    33%      { transform: translate3d(-40px, 30px, 0) scale(1.06); }
    66%      { transform: translate3d(30px, -25px, 0) scale(0.94); }
}

@media (prefers-reduced-motion: reduce) {
    body::before,
    body::after { animation: none; }

    *,
    *::before,
    *::after {
        animation-duration: 1ms !important;
        transition-duration: 1ms !important;
    }
}

a {
    color: inherit;
    text-decoration: none;
}

img,
picture,
svg {
    display: block;
    max-width: 100%;
}

button {
    background: transparent;
    border: 0;
    color: inherit;
    cursor: pointer;
    font: inherit;
}

input,
select,
textarea {
    color: inherit;
    font: inherit;
}

ul,
ol {
    list-style: none;
}

/* ============ 框架容器 ============ */

.ac-frame {
    margin-inline: auto;
    max-width: var(--frame-max);
    padding-inline: var(--gap-md);
    width: 100%;
}

@media (min-width: 768px)  { .ac-frame { padding-inline: var(--gap-lg); } }
@media (min-width: 1024px) { .ac-frame { padding-inline: var(--gap-xl); } }

/* ============ 玻璃板（基础原件，无 hover） ============ */

.ac-pane {
    backdrop-filter: blur(var(--frost-soft));
    -webkit-backdrop-filter: blur(var(--frost-soft));
    background: var(--c-plate);
    border: var(--frost-line);
    border-radius: var(--round-lg);
    box-shadow: var(--frost-cast);
}

.ac-pane--lift {
    transition:
        background var(--ease-mid),
        box-shadow var(--ease-mid),
        transform var(--ease-mid);
}

.ac-pane--lift:hover {
    background: var(--c-plate-hi);
    box-shadow: var(--frost-cast-up);
    transform: translateY(-3px);
}

/* ============ 排版工具 ============ */

.ac-h-display {
    font-family: var(--type-display);
    font-weight: 600;
    letter-spacing: 0.02em;
    line-height: 1.05;
    text-transform: uppercase;
}

.ac-h-section {
    align-items: center;
    display: flex;
    font-family: var(--type-display);
    font-size: var(--text-2xl);
    font-weight: 600;
    gap: var(--gap-xs);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.ac-h-section svg {
    flex-shrink: 0;
    height: 1.4rem;
    width: 1.4rem;
}

.ac-eyebrow {
    color: var(--c-ink-low);
    font-family: var(--type-display);
    font-size: var(--text-2xs);
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

/* ============ 徽章（状态指示） ============ */

.ac-mark {
    align-items: center;
    border-radius: var(--round-pill);
    display: inline-flex;
    font-size: var(--text-2xs);
    font-weight: 700;
    gap: 6px;
    letter-spacing: 0.1em;
    line-height: 1;
    padding: 4px 11px;
    text-transform: uppercase;
}

.ac-mark--air {
    background: var(--c-onair);
    color: #FFF;
}

.ac-mark--air::before {
    animation: ac-pulse 1.4s ease-in-out infinite;
    background: #FFF;
    border-radius: 50%;
    content: '';
    height: 7px;
    width: 7px;
}

.ac-mark--vod {
    background: var(--c-brand);
    color: #FFF;
}

.ac-mark--tag {
    background: var(--c-brand-tint);
    color: var(--c-brand-deep);
}

.ac-mark--gold {
    background: var(--c-warm-tint);
    color: var(--c-warm-deep);
}

@keyframes ac-pulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.32; }
}

/* ============ 按钮族 ============ */

.ac-btn {
    align-items: center;
    border-radius: var(--round-pill);
    display: inline-flex;
    font-family: var(--type-body);
    font-size: var(--text-md);
    font-weight: 600;
    gap: 8px;
    justify-content: center;
    line-height: 1;
    padding: 11px 22px;
    transition:
        background var(--ease-quick),
        box-shadow var(--ease-quick),
        transform var(--ease-quick);
    white-space: nowrap;
}

.ac-btn:hover  { transform: translateY(-1px); }
.ac-btn:active { transform: translateY(0); }

.ac-btn svg {
    height: 16px;
    width: 16px;
}

.ac-btn--brand {
    background: var(--c-brand);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.32);
    color: var(--c-on-brand);
}

.ac-btn--brand:hover {
    background: var(--c-brand-deep);
    box-shadow: 0 10px 28px rgba(124, 58, 237, 0.42);
}

.ac-btn--gold {
    background: var(--c-warm);
    color: #1F1100;
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.30);
}

.ac-btn--gold:hover {
    background: var(--c-warm-deep);
    color: #FFF;
}

.ac-btn--air {
    background: var(--c-onair);
    box-shadow: 0 6px 20px var(--c-onair-glow);
    color: #FFF;
}

.ac-btn--air:hover { background: #B91C1C; }

.ac-btn--ghost {
    background: transparent;
    border: 1px solid var(--c-edge-strong);
    color: var(--c-ink-mid);
}

.ac-btn--ghost:hover {
    background: rgba(28, 25, 23, 0.04);
    color: var(--c-ink);
}

.ac-btn--small  { font-size: var(--text-xs); padding: 7px 14px; }
.ac-btn--block  { display: flex; width: 100%; }
.ac-btn[disabled],
.ac-btn:disabled {
    cursor: not-allowed;
    opacity: 0.5;
    transform: none;
}

/* ============ 浮动通知层（土司） ============ */

.ac-cry-stack {
    display: flex;
    flex-direction: column;
    gap: var(--gap-xs);
    position: fixed;
    right: var(--gap-md);
    top: calc(var(--topbar-h) + var(--gap-md));
    z-index: var(--layer-cry);
}

.ac-cry {
    animation: ac-cry-in 280ms cubic-bezier(0.16, 0.84, 0.44, 1) forwards;
    backdrop-filter: blur(var(--frost-soft));
    background: var(--c-plate-hi);
    border: var(--frost-line);
    border-left: 3px solid var(--c-brand);
    border-radius: var(--round-md);
    box-shadow: var(--frost-cast-up);
    font-size: var(--text-md);
    font-weight: 500;
    max-width: 340px;
    padding: 12px 18px;
}

.ac-cry--pass { border-left-color: var(--c-pass); }
.ac-cry--warn { border-left-color: var(--c-warn); }
.ac-cry--stop { border-left-color: var(--c-stop); }
.ac-cry--leaving { animation: ac-cry-out 220ms ease forwards; }

@keyframes ac-cry-in {
    from { opacity: 0; transform: translateX(36px); }
    to   { opacity: 1; transform: translateX(0); }
}

@keyframes ac-cry-out {
    from { opacity: 1; transform: translateX(0); }
    to   { opacity: 0; transform: translateX(36px); }
}

/* ============ 空状态 ============ */

.ac-blank {
    align-items: center;
    color: var(--c-ink-low);
    display: flex;
    flex-direction: column;
    padding: var(--gap-2xl) var(--gap-md);
    text-align: center;
}

.ac-blank__sigil {
    height: 60px;
    margin-bottom: var(--gap-md);
    opacity: 0.45;
    width: 60px;
}

.ac-blank__lead {
    font-family: var(--type-display);
    font-size: var(--text-xl);
    font-weight: 600;
    letter-spacing: 0.04em;
    margin-bottom: var(--gap-2xs);
    text-transform: uppercase;
}

.ac-blank__hint {
    font-size: var(--text-md);
    max-width: 320px;
}

/* ============ 骨架 / 滚动条 ============ */

.ac-skel {
    animation: ac-glow 1.6s linear infinite;
    background:
        linear-gradient(90deg,
            rgba(255, 255, 255, 0.3) 25%,
            rgba(255, 255, 255, 0.65) 50%,
            rgba(255, 255, 255, 0.3) 75%);
    background-size: 220% 100%;
    border-radius: var(--round-sm);
}

@keyframes ac-glow {
    0%   { background-position: 220% 0; }
    100% { background-position: -220% 0; }
}

::-webkit-scrollbar           { height: 6px; width: 6px; }
::-webkit-scrollbar-track     { background: transparent; }
::-webkit-scrollbar-thumb     { background: rgba(28, 25, 23, 0.14); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(28, 25, 23, 0.24); }