@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@900&display=swap');

.site-announcement-overlay[hidden] { display: none !important; }

.site-announcement-overlay {
    --announcement-primary: #22c55e;
    --announcement-secondary: #16a34a;
    --announcement-text: #ffffff;
    --announcement-text-secondary: #bbf7d0;
    --announcement-outline-color: #000000;
    --announcement-outline-width: 2px;
    --announcement-topbar: #050505;
    --announcement-angle: 135deg;
    position: fixed;
    z-index: 12000;
    inset: 0;
    padding: max(18px, env(safe-area-inset-top)) max(14px, env(safe-area-inset-right)) max(18px, env(safe-area-inset-bottom)) max(14px, env(safe-area-inset-left));
    display: grid;
    place-items: center;
    overflow-x: hidden;
    overflow-y: auto;
    background: rgba(4, 8, 7, .58);
    backdrop-filter: blur(3px) saturate(.95);
    -webkit-backdrop-filter: blur(3px) saturate(.95);
    animation: site-announcement-fade-in .34s ease both;
}

.site-announcement-overlay.is-closing { animation: site-announcement-fade-out .24s ease both; }

.site-announcement-dialog {
    position: relative;
    isolation: isolate;
    width: min(560px, 100%);
    max-height: min(720px, calc(100dvh - 36px));
    overflow: hidden;
    display: flex;
    flex-direction: column;
    padding: clamp(28px, 6vw, 48px);
    border: 1px solid rgba(255,255,255,.34);
    border-top: 18px solid var(--announcement-topbar);
    border-radius: 8px;
    background-color: rgba(12, 18, 16, .48);
    background-image: linear-gradient(
        var(--announcement-angle),
        color-mix(in srgb, var(--announcement-primary) 58%, transparent),
        color-mix(in srgb, var(--announcement-secondary) 52%, transparent)
    );
    color: var(--announcement-text);
    font-family: "Noto Sans TC", "Source Han Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
    font-weight: 900;
    backdrop-filter: blur(24px) saturate(1.28);
    -webkit-backdrop-filter: blur(24px) saturate(1.28);
    text-shadow:
        calc(var(--announcement-outline-width) * -1) calc(var(--announcement-outline-width) * -1) 0 var(--announcement-outline-color),
        var(--announcement-outline-width) calc(var(--announcement-outline-width) * -1) 0 var(--announcement-outline-color),
        calc(var(--announcement-outline-width) * -1) var(--announcement-outline-width) 0 var(--announcement-outline-color),
        var(--announcement-outline-width) var(--announcement-outline-width) 0 var(--announcement-outline-color),
        0 calc(var(--announcement-outline-width) * -1) 0 var(--announcement-outline-color),
        0 var(--announcement-outline-width) 0 var(--announcement-outline-color),
        calc(var(--announcement-outline-width) * -1) 0 0 var(--announcement-outline-color),
        var(--announcement-outline-width) 0 0 var(--announcement-outline-color);
    box-shadow: 0 36px 100px rgba(0,0,0,.52), 0 0 0 1px rgba(255,255,255,.08) inset;
    animation: site-announcement-rise .62s cubic-bezier(.16, 1, .3, 1) both;
}

.site-announcement-overlay.is-closing .site-announcement-dialog { animation: site-announcement-leave .24s ease both; }

.site-announcement-dialog::before {
    content: "";
    position: absolute;
    z-index: -1;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,.15), transparent 38%, rgba(0,0,0,.1));
    pointer-events: none;
}

.site-announcement-glow {
    position: absolute;
    z-index: -1;
    inset: -80% -45%;
    background: linear-gradient(110deg, transparent 43%, rgba(255,255,255,.22) 50%, transparent 57%);
    transform: translateX(-45%);
    animation: site-announcement-shine 1.1s .34s ease-out both;
    pointer-events: none;
}

.site-announcement-dialog h2 {
    margin: 0 0 16px;
    color: inherit;
    font-size: 42px;
    font-weight: 900 !important;
    line-height: 1.16;
    overflow-wrap: anywhere;
    text-shadow: none;
    -webkit-text-stroke: var(--announcement-outline-width) var(--announcement-outline-color);
    paint-order: stroke fill;
}

.site-announcement-overlay.is-text-gradient .site-announcement-dialog h2,
.site-announcement-overlay.is-text-gradient .site-announcement-dialog > p {
    background-image: linear-gradient(90deg, var(--announcement-text), var(--announcement-text-secondary));
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
}

.site-announcement-dialog > p {
    margin: 0;
    color: inherit;
    font-size: 18px;
    font-weight: 900 !important;
    line-height: 1.75;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    min-height: 0;
    max-height: min(42dvh, 360px);
    flex: 0 1 auto;
    overflow-x: hidden;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,.55) transparent;
    text-shadow: none;
    -webkit-text-stroke: var(--announcement-outline-width) var(--announcement-outline-color);
    paint-order: stroke fill;
}

.site-announcement-dialog > p::-webkit-scrollbar { width: 5px; height: 0; }
.site-announcement-dialog > p::-webkit-scrollbar-thumb { border-radius: 4px; background: rgba(255,255,255,.55); }

.site-announcement-actions {
    flex: 0 0 auto;
    display: grid;
    grid-template-columns: 1fr 1.35fr;
    gap: 10px;
    margin-top: 30px;
}

.site-announcement-actions button {
    min-width: 0;
    min-height: 46px;
    padding: 10px 14px;
    border: 1px solid rgba(255,255,255,.42);
    border-radius: 7px;
    background: rgba(0,0,0,.16);
    color: inherit;
    font: inherit;
    font-weight: 900;
    cursor: pointer;
    transition: transform .18s ease, background .18s ease, box-shadow .18s ease;
}

.site-announcement-actions button:last-child { background: rgba(255,255,255,.18); }
.site-announcement-actions button:hover { transform: translateY(-2px); background: rgba(255,255,255,.25); box-shadow: 0 10px 24px rgba(0,0,0,.16); }
.site-announcement-actions button:active { transform: scale(.97); }
.site-announcement-actions button:focus-visible { outline: 3px solid currentColor; outline-offset: 3px; }

@keyframes site-announcement-fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes site-announcement-fade-out { from { opacity: 1; } to { opacity: 0; } }
@keyframes site-announcement-rise { from { opacity: 0; transform: translateY(34px) scale(.92); } to { opacity: 1; transform: translateY(0) scale(1); } }
@keyframes site-announcement-leave { from { opacity: 1; transform: scale(1); } to { opacity: 0; transform: translateY(12px) scale(.96); } }
@keyframes site-announcement-shine { from { opacity: 0; transform: translateX(-45%); } 38% { opacity: 1; } to { opacity: 0; transform: translateX(45%); } }

@media (max-width: 520px) {
    .site-announcement-overlay {
        padding: max(10px, env(safe-area-inset-top)) max(10px, env(safe-area-inset-right)) max(10px, env(safe-area-inset-bottom)) max(10px, env(safe-area-inset-left));
    }
    .site-announcement-dialog {
        width: 100%;
        max-height: calc(100dvh - 20px);
        padding: 22px 16px 16px;
        border-top-width: 12px;
    }
    .site-announcement-dialog h2 { margin-bottom: 12px; font-size: 28px; line-height: 1.18; }
    .site-announcement-dialog > p { max-height: 36dvh; font-size: 15px; line-height: 1.6; }
    .site-announcement-actions { grid-template-columns: 1fr; gap: 8px; margin-top: 18px; }
    .site-announcement-actions button { min-height: 44px; padding: 8px 10px; }
}

@media (max-width: 520px) and (max-height: 620px) {
    .site-announcement-dialog { padding-top: 16px; }
    .site-announcement-dialog h2 { margin-bottom: 8px; font-size: 24px; }
    .site-announcement-dialog > p { max-height: 28dvh; font-size: 14px; }
    .site-announcement-actions { margin-top: 12px; }
}

@media (prefers-reduced-motion: reduce) {
    .site-announcement-overlay,
    .site-announcement-dialog,
    .site-announcement-glow { animation-duration: .01ms !important; animation-delay: 0s !important; }
    .site-announcement-actions button { transition: none; }
}