/* Home — 首頁：Hero、PvP 系統、決鬥模式、分流、加入方式 */

/* ============================================
   Hero
   ============================================ */

.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: var(--spacing-lg);
    padding: calc(var(--nav-height) + var(--spacing-md)) 0 var(--spacing-lg);
    background-color: var(--bg-dark);
    background-image:
        linear-gradient(180deg, rgba(8, 8, 14, 0.55) 0%, rgba(8, 8, 14, 0.85) 60%, var(--bg-dark) 100%),
        url("../../images/hero_background.png");
    background-size: cover;
    background-position: center;
    overflow: hidden;
    isolation: isolate;
}

/* 網格與斜向光帶 */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 56px 56px;
    mask-image: radial-gradient(ellipse 70% 60% at 60% 40%, black 10%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 60% 40%, black 10%, transparent 70%);
}

.hero::after {
    content: '';
    position: absolute;
    z-index: -1;
    top: -20%;
    right: -10%;
    width: 55%;
    height: 140%;
    background: linear-gradient(100deg, transparent 0%, var(--primary-glow-soft) 45%, transparent 75%);
    transform: skewX(-18deg);
    pointer-events: none;
}

.hero__inner {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    align-items: center;
    gap: var(--spacing-lg);
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.4rem 1rem;
    margin-bottom: var(--spacing-md);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    color: var(--primary-light);
    background: var(--primary-tint);
    box-shadow: inset 0 0 0 1px var(--primary-border);
    clip-path: var(--clip-cut-sm);
    animation: heroIn 0.8s var(--ease-out-expo) both;
}

.hero__title {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: var(--spacing-md);
}

.hero__brand {
    font-family: var(--font-heading);
    font-size: clamp(3.6rem, 10vw, 7.5rem);
    font-weight: 700;
    line-height: 0.9;
    letter-spacing: 0.06em;
    color: transparent;
    -webkit-text-stroke: 1.5px var(--text-light);
    animation: heroIn 0.8s var(--ease-out-expo) 0.08s both;
}

.hero__slogan {
    font-family: var(--font-body);
    font-size: clamp(1.7rem, 4vw, 2.8rem);
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--text-main);
    animation: heroIn 0.8s var(--ease-out-expo) 0.16s both;
}

.hero__slogan em {
    font-style: normal;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero__lead {
    max-width: 560px;
    margin-bottom: var(--spacing-md);
    color: var(--text-light);
    font-size: 1.08rem;
    animation: heroIn 0.8s var(--ease-out-expo) 0.24s both;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    animation: heroIn 0.8s var(--ease-out-expo) 0.32s both;
}

/* Logo 與旋轉光環 */
.hero__visual {
    position: relative;
    display: grid;
    place-items: center;
    aspect-ratio: 1;
    max-width: 420px;
    width: 100%;
    margin-left: auto;
    animation: heroIn 1s var(--ease-out-expo) 0.2s both;
}

.hero__ring {
    position: absolute;
    inset: 4%;
    border-radius: 50%;
    border: 1px dashed var(--primary-border);
    box-shadow: 0 0 80px var(--primary-glow-soft), inset 0 0 60px var(--primary-glow-soft);
    animation: ringSpin 40s linear infinite;
}

.hero__ring::before {
    content: '';
    position: absolute;
    inset: 10%;
    border-radius: 50%;
    border: 1px solid var(--border-color);
}

.hero__logo {
    position: relative;
    width: 78%;
    filter: drop-shadow(0 0 40px var(--primary-glow-soft));
}

@keyframes heroIn {
    from { opacity: 0; transform: translateY(18px); }
    to   { opacity: 1; transform: none; }
}

@keyframes ringSpin {
    to { transform: rotate(360deg); }
}

/* ── 即時資訊列 ── */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: rgba(14, 14, 22, 0.7);
    border: 1px solid var(--border-color);
    clip-path: var(--clip-cut-md);
    animation: heroIn 0.8s var(--ease-out-expo) 0.4s both;
}

.hero-stat {
    display: flex;
    flex-direction: column-reverse;
    gap: 0.2rem;
    padding: 1.1rem 1.5rem;
}

.hero-stat + .hero-stat { border-left: 1px solid var(--border-color); }

.hero-stat__label {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.8rem;
    letter-spacing: 0.06em;
    color: var(--text-muted);
}

.hero-stat__value {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--text-main);
}

.hero-stat--live .hero-stat__value { color: var(--color-online); }

.hero-stat--live.is-offline .hero-stat__value { color: var(--text-subtle); }

.hero-stat__max {
    margin-left: 0.3rem;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
}

#server-online-count.count-flip { animation: countFlip 0.4s var(--ease-out-expo); }

@keyframes countFlip {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: none; }
}

/* 狀態燈 */
.status-dot {
    position: relative;
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.status-dot--online {
    background: var(--color-online);
    box-shadow: 0 0 6px var(--color-online);
}

.status-dot--online::after {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 50%;
    background: var(--color-online-glow);
    animation: dotPulse 2s ease-in-out infinite;
}

.status-dot--offline { background: var(--color-offline); }

.status-dot--loading {
    background: var(--primary-color);
    animation: dotBlink 1.2s ease-in-out infinite;
}

@keyframes dotPulse {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50%      { transform: scale(1.9); opacity: 0; }
}

@keyframes dotBlink {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.25; }
}

/* ============================================
   01 PvP 系統
   ============================================ */

.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.feature-card {
    position: relative;
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    clip-path: var(--clip-cut-md);
    transition: border-color var(--transition-normal), background var(--transition-normal), transform var(--transition-normal);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--gradient-primary);
    transform: scaleY(0.25);
    transform-origin: top;
    transition: transform var(--transition-normal);
}

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-color-hover);
}

.feature-card:hover::before { transform: scaleY(1); }

.feature-card__icon {
    display: inline-grid;
    place-items: center;
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-sm);
    font-size: 1.4rem;
    color: var(--primary-color);
    background: var(--primary-tint);
    box-shadow: inset 0 0 0 1px var(--primary-border);
    clip-path: var(--clip-cut-sm);
}

.feature-card__tag {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.06em;
    color: var(--text-subtle);
}

.feature-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.45rem;
    letter-spacing: 0.02em;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.97rem;
}

.mini-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
}

.mini-card {
    display: flex;
    gap: 0.85rem;
    padding: 1.15rem 1.2rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    transition: border-color var(--transition-normal), background var(--transition-normal);
}

.mini-card:hover {
    border-color: var(--border-color-hover);
    background: var(--primary-tint);
}

.mini-card > .icon {
    margin-top: 0.2rem;
    font-size: 1.25rem;
    color: var(--primary-light);
}

.mini-card h3 {
    margin-bottom: 0.25rem;
    font-size: 1.1rem;
}

.mini-card p {
    color: var(--text-muted);
    font-size: 0.88rem;
    line-height: 1.6;
}

/* ============================================
   02 決鬥模式
   ============================================ */

.mode-columns {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

.mode-group {
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    clip-path: var(--clip-cut-md);
}

.mode-group__head {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.mode-group__head > .icon {
    font-size: 1.6rem;
    color: var(--primary-color);
}

.mode-group__head h3 {
    margin: 0;
    font-size: 1.5rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.mode-group__head p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.mode-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.mode-list li {
    padding: 0.35rem 0.8rem;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--text-light);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
}

.mode-list li.is-custom,
.mode-legend__mark {
    border-color: var(--primary-border);
    box-shadow: inset 3px 0 0 var(--primary-color);
}

.mode-legend {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: var(--spacing-sm) 0 var(--spacing-md);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.mode-legend__mark {
    width: 18px;
    height: 14px;
    border: 1px solid var(--primary-border);
}

.arena-strip {
    padding: var(--spacing-md);
    border: 1px dashed var(--border-strong);
}

.arena-strip__title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
    font-size: 1.25rem;
}

.arena-strip__title .icon { color: var(--primary-color); }

.arena-strip__desc {
    margin-bottom: var(--spacing-sm);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.arena-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 0.5rem;
}

.arena-list li {
    font-size: 0.88rem;
    color: var(--text-light);
}

.arena-list li:not(:last-child)::after {
    content: '/';
    margin-left: 0.5rem;
    color: var(--text-subtle);
}

/* ============================================
   03 分流
   ============================================ */

.server-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: var(--spacing-md);
}

.server-card {
    --server-color: var(--pvp-color);
    --server-tint: var(--pvp-tint);
    --server-border: var(--pvp-border);
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    clip-path: var(--clip-cut-md);
    overflow: hidden;
    transition: border-color var(--transition-normal);
}

.server-card--smp {
    --server-color: var(--smp-color);
    --server-tint: var(--smp-tint);
    --server-border: var(--smp-border);
}

.server-card:hover { border-color: var(--server-border); }

.server-card__media {
    height: 160px;
    background-size: cover;
    background-position: center;
    mask-image: linear-gradient(180deg, black 30%, transparent 100%);
    -webkit-mask-image: linear-gradient(180deg, black 30%, transparent 100%);
    opacity: 0.55;
    transition: opacity var(--transition-slow);
}

.server-card--pvp .server-card__media { background-image: url("../../images/kitpvp_background.webp"); }
.server-card--smp .server-card__media { background-image: url("../../images/smp_background.webp"); }

.server-card:hover .server-card__media { opacity: 0.8; }

.server-card__body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 0 var(--spacing-md) var(--spacing-md);
    margin-top: -64px;
    position: relative;
}

.server-card__head {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.server-card__icon {
    width: 56px;
    height: 56px;
    padding: 0.4rem;
    background: var(--bg-dark);
    box-shadow: inset 0 0 0 1px var(--server-border);
    clip-path: var(--clip-cut-sm);
}

.server-card__tag {
    display: inline-block;
    margin-bottom: 0.2rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    color: var(--server-color);
}

.server-card h3 {
    margin: 0;
    font-size: 1.7rem;
}

.server-card__desc {
    margin-bottom: var(--spacing-sm);
    color: var(--text-muted);
}

.server-card__list {
    flex: 1;
    margin-bottom: var(--spacing-md);
}

.server-card__list li {
    position: relative;
    padding: 0.5rem 0 0.5rem 1.4rem;
    color: var(--text-light);
    border-bottom: 1px solid var(--border-color);
}

.server-card__list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 8px;
    height: 8px;
    background: var(--server-color);
    transform: translateY(-50%) rotate(45deg);
}

.server-card__link,
.join-step__link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    align-self: flex-start;
    font-weight: 700;
    color: var(--server-color, var(--primary-light));
}

.server-card__link .icon,
.join-step__link .icon { transition: transform var(--transition-fast); }

.server-card__link:hover .icon,
.join-step__link:hover .icon { transform: translateX(4px); }

.server-card__link:hover { color: var(--text-main); }

/* ============================================
   04 加入方式
   ============================================ */

.join-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    counter-reset: none;
}

.join-step {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    padding: var(--spacing-md) 1.4rem;
    background: var(--bg-card);
    border-top: 2px solid var(--primary-color);
}

.join-step__num {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--primary-color);
    letter-spacing: 0.1em;
}

.join-step h3 {
    margin: 0;
    font-size: 1.3rem;
}

.join-step p {
    color: var(--text-muted);
    font-size: 0.92rem;
}

.join-step__ip {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
    margin-top: 0.3rem;
    padding: 0.6rem 0.9rem;
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--primary-light);
    background: var(--bg-dark);
    border: 1px solid var(--primary-border);
}

.join-step__ip:hover {
    color: var(--bg-dark);
    background: var(--primary-color);
}

.join-step__link { margin-top: auto; padding-top: 0.4rem; }

.join-step__link:hover { color: var(--primary-color); }

/* ============================================
   響應式
   ============================================ */

@media (max-width: 1024px) {
    .mini-grid { grid-template-columns: repeat(2, 1fr); }

    .join-steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
    .hero__inner { grid-template-columns: 1fr; }

    .hero__visual {
        order: -1;
        max-width: 200px;
        margin: 0;
    }

    .hero-stats { grid-template-columns: repeat(2, 1fr); }

    .hero-stat:nth-child(3) { border-left: none; }

    .hero-stat:nth-child(n + 3) { border-top: 1px solid var(--border-color); }

    .mode-columns,
    .server-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .hero {
        min-height: auto;
        gap: var(--spacing-md);
        padding-top: calc(var(--nav-height-mobile) + var(--spacing-md));
    }

    .hero__visual { max-width: 140px; }

    .hero__badge { margin-bottom: var(--spacing-sm); }

    .hero__actions .btn { flex: 1 1 auto; }

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

    .feature-card { padding: 1.5rem; }

    .feature-card__tag {
        position: static;
        display: block;
        margin-bottom: 0.3rem;
    }

    .hero-stat { padding: 0.9rem 1rem; }

    .hero-stat__value { font-size: 1.4rem; }
}

@media (max-width: 560px) {
    .mini-grid,
    .join-steps { grid-template-columns: 1fr; }
}