/* ========================================
   Talego - 竞技场页面
   Dark theme · Competition card grid
   ======================================== */

.arena-page {
    padding: calc(var(--nav-h) + 32px) 28px 48px;
    max-width: 1240px;
    margin: 0 auto;
    overflow-x: hidden;
}

/* ---- Header ---- */
.arena-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 20px;
    min-width: 0;
}
.arena-title {
    font-family: var(--font-title);
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.arena-title svg {
    color: #f59e0b; /* trophy gold */
}

/* ---- Toolbar ---- */
.arena-toolbar {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    margin-bottom: 24px;
}

/* Search - reuse workspace styles */
.arena-toolbar .ws-search-wrapper { }
.arena-toolbar .ws-search-box { width: 160px; }

.arena-toolbar .ws-dropdown { }
.arena-toolbar .ws-view-btn { }

/* ---- Card Grid ---- */
.arena-grid {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

/* Competition card - 毛玻璃叠加设计 */
.arena-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: all .35s cubic-bezier(.25,.46,.45,.94);
    background: rgba(255,255,255,.03);
    border: 1px solid rgba(255,255,255,.08);
}
.arena-card:hover {
    transform: translateY(-5px) scale(1.01);
    border-color: rgba(255,255,255,.16);
    box-shadow: 0 16px 48px rgba(0,0,0,.4), 0 0 0 1px rgba(255,255,255,.05);
}

/* Cover area - 占满整个卡片 */
.arena-card-bg {
    aspect-ratio: 4/3;
    position: relative;
    overflow: hidden;
    width: 100%;
}
.arena-card-bg > *:not(.arena-card-badges):not(.arena-card-info) {
    position: absolute;
    inset: 0;
}

/* 遮罩渐变（底部用于文字可读性） */
.arena-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top,
        rgba(6,10,20,.92) 0%,
        rgba(6,10,20,.55) 40%,
        transparent 70%
    );
    z-index: 1;
    pointer-events: none;
}

/* Badges overlay (top-left, absolute over cover) */
.arena-card-badges {
    position: absolute;
    top: 12px;
    left: 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    z-index: 3;
}

/* Badge variants */
.arena-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 6px;
    line-height: 1.2;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

/* Status badges */
.arena-badge.active {
    color: #34d399;
    background: rgba(52,211,153,.15);
    border: 1px solid rgba(52,211,153,.25);
}
.arena-badge.ended {
    color: #9ca3af;
    background: rgba(156,163,175,.12);
    border: 1px solid rgba(156,163,175,.2);
}
/* "报名中" = no specific class, use a neutral style or add .enroll class */
.arena-badge:not(.active):not(.ended):not(.platform):not(.countdown) {
    color: var(--cyan);
    background: var(--cyan-dim);
    border: 1px solid rgba(0,212,255,.2);
}

/* Countdown badge (倒计时) */
.arena-badge.countdown {
    color: #fbbf24;
    background: rgba(251,191,36,.12);
    border: 1px solid rgba(251,191,36,.22);
}

/* Platform badge */
.arena-badge.platform {
    color: rgba(255,255,255,.7);
    background: rgba(0,0,0,.35);
    border: 1px solid rgba(255,255,255,.08);
}

/* Info area - 叠加在封面底部，毛玻璃效果 */
.arena-card-info {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 36px 14px 12px;
    z-index: 2;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}
.arena-card-title {
    font-size: 13.5px;
    font-weight: 600;
    color: #f0f0f0;
    line-height: 1.45;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-shadow: 0 1px 3px rgba(0,0,0,.5);
}
.arena-card-desc {
    font-size: 11px;
    color: rgba(255,255,255,.5);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 8px;
}

/* Meta row: 时间范围 */
.arena-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}
.arena-card-time {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    color: rgba(255,255,255,.45);
}
.arena-card-time svg {
    opacity: .6;
    flex-shrink: 0;
}

/* 底部参与人数（可选，右侧） */
.arena-author-info {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    flex: 1;
}
.arena-author-avatar {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}
.arena-author-name {
    font-size: 11px;
    color: rgba(255,255,255,.5);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.arena-stats-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.arena-stat-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    color: var(--text-muted);
}
.arena-stat-item svg {
    opacity: .6;
}

/* ---- Footer info ---- */
.arena-footer {
    text-align: center;
    margin-top: 36px;
    padding-bottom: 40px;
}
.arena-footer-text {
    font-size: 11.5px;
    color: rgba(255,255,255,.25);
    letter-spacing: 1px;
}
.arena-footer-copy {
    font-size: 10px;
    color: rgba(255,255,255,.16);
    margin-top: 4px;
}

/* ---- Tab switcher (if needed for arena sub-filters) ---- */
.a-tab {
    padding: 6px 18px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: 99px;
    transition: all .2s ease;
    cursor: pointer;
}
.a-tab:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,.04);
}
.a-tab-active,
.a-tab.active {
    color: var(--accent);
    background: var(--accent-dim);
    border-color: rgba(0,212,255,.18);
}

/* ---- Responsive ---- */
@media (max-width: 1100px) {
    .arena-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 700px) {
    .arena-page { padding: calc(var(--nav-h) + 24px) 14px 36px; }
    .arena-grid { grid-template-columns: 1fr; gap: 14px; }
    .arena-toolbar .ws-search-wrapper { display: none; }
    .arena-toolbar .ws-dropdown { display: none; }
}

/* ========================================
   Arena Detail Page - 设计稿还原
   ======================================== */

.arena-detail-page {
    padding: calc(var(--nav-h) + 24px) 28px 48px;
    max-width: 1240px;
    margin: 0 auto;
    overflow-x: hidden;
    display: none;
}

/* ---- 顶部导航栏 ---- */
.ad-top-bar {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 28px;
}
.ad-top-left {
    flex-shrink: 0;
}
/* 第二行：标题 + 状态 + 按钮（左右布局） */
.ad-info-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.ad-top-center {
    flex: 1;
    min-width: 0;
}
.ad-top-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

/* 返回按钮 */
.ad-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 13px;
    color: var(--text-secondary);
    transition: all .2s ease;
    text-decoration: none !important;
}
.ad-back-btn:hover {
    color: var(--text-primary);
}

/* 活动标题 */
.ad-event-title {
    font-family: var(--font-title);
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
    line-height: 1.4;
    margin-bottom: 10px;
}

/* 状态行 */
.ad-status-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

/* 状态徽章 - 进行中 (绿色) */
.ad-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: 0.3px;
    line-height: 1.4;
}
.ad-status-badge svg {
    flex-shrink: 0;
}
.ad-status-active {
    color: #34d399;
    background: rgba(52,211,153,.12);
    border: 1px solid rgba(52,211,153,.22);
}

/* 倒计时文本（纯文本，紧跟进行中） */
.ad-countdown-text {
    font-size: 11.5px;
    font-weight: 500;
    color: #34d399;
    letter-spacing: 0.3px;
}

/* 时间文本 */
.ad-time-text {
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 0.2px;
}

/* 操作按钮 */
.ad-create-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 38px;
    padding: 0 20px;
    border-radius: 9px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid var(--border);
    cursor: pointer;
    transition: all .2s ease;
}
.ad-create-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    background: rgba(255,255,255,.03);
}
.ad-apply-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 38px;
    padding: 0 26px;
    border-radius: 9px;
    font-size: 13px;
    font-weight: 600;
    background: linear-gradient(135deg, #7c3aed, #a855f7, #c084fc);
    color: #fff;
    border: none;
    cursor: pointer;
    transition: all .2s ease;
    box-shadow: 0 2px 14px rgba(124,58,237,.35);
    white-space: nowrap;
}
.ad-apply-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 22px rgba(124,58,237,.5);
}
.ad-apply-btn.applied {
    background: rgba(52,211,153,.15);
    box-shadow: none;
    cursor: default;
    color: #34d399;
    border: 1px solid rgba(52,211,153,.25);
}
.ad-apply-btn.applied:hover {
    transform: none;
    box-shadow: none;
}
.ad-apply-btn.reviewing {
    background: rgba(255,255,255,.06);
    box-shadow: none;
    cursor: default;
    color: rgba(255,255,255,.45);
    border: 1px solid rgba(255,255,255,.08);
}
.ad-apply-btn.reviewing:hover {
    transform: none;
    box-shadow: none;
}
.ad-create-btn.disabled,
.ad-create-btn:disabled {
    opacity: .45;
    cursor: not-allowed;
    pointer-events: none;
    color: rgba(255,255,255,.35);
    border-color: rgba(255,255,255,.06);
}
.ad-create-btn.ready {
    background: #fff;
    color: #111;
    border-color: #fff;
    opacity: 1;
    pointer-events: auto;
    cursor: pointer;
}
.ad-create-btn.ready:hover {
    background: rgba(255,255,255,.92);
    color: #111;
    border-color: rgba(255,255,255,.92);
}

.ad-submit-error {
    padding: 0 24px 16px;
    font-size: 12px;
    color: #f87171;
    min-height: 18px;
}

@media (max-width: 768px) {
    #adSubmitModal .studio-publish-body {
        grid-template-columns: 1fr;
    }
}

/* ---- Section ---- */
.ad-section {
    margin-bottom: 32px;
}

/* ---- 活动介绍卡片 ---- */
.ad-intro-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px 28px 16px;
}
.ad-intro-text {
    font-size: 13.5px;
    color: var(--text-secondary);
    line-height: 1.85;
    max-height: 180px;
    overflow: hidden;
    transition: max-height .4s ease;
}
.ad-intro-text.expanded {
    max-height: 2000px;
}
.ad-intro-text p { margin-bottom: 10px; }
.ad-intro-text strong { color: var(--text-primary); font-weight: 600; }
.ad-intro-text ul { padding-left: 18px; margin-bottom: 10px; }
.ad-intro-text li { margin-bottom: 4px; }

.ad-intro-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    width: 100%;
    margin-top: 14px;
    padding-top: 10px;
    border-top: 1px solid rgba(255,255,255,.04);
    font-size: 12.5px;
    color: var(--text-muted);
    cursor: pointer;
    transition: .15s;
    background: none;
    border-left: none;
    border-right: none;
    border-bottom: none;
}
.ad-intro-toggle:hover {
    color: var(--text-secondary);
}

/* ---- 作品区域头部 ---- */
.ad-section-title {
    font-family: var(--font-title);
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.2px;
}
.ad-works-header {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 18px;
}
.ad-works-header .ad-section-title {
    margin-bottom: 0;
}
.ad-works-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

/* Tab 样式 */
.ad-tabs {
    display: flex;
    align-items: center;
    gap: 4px;
}
.ad-tab {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 16px;
    border-radius: 99px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all .2s ease;
}
.ad-tab:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,.03);
}
.ad-tab.active {
    color: var(--text-primary);
    background: rgba(255,255,255,.06);
    border-color: var(--border);
    font-weight: 600;
}
.ad-tab-count {
    font-size: 11px;
    min-width: 18px;
    height: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9px;
    background: rgba(255,255,255,.08);
    font-weight: 600;
    padding: 0 5px;
}
.ad-tab.active .ad-tab-count {
    background: var(--cyan-dim);
    color: var(--cyan);
}

/* 工具栏：搜索+筛选 */
.ad-works-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
}
.ad-search-box {
    position: relative;
    display: flex;
    align-items: center;
}
.ad-search-box svg {
    position: absolute;
    left: 10px;
    color: var(--text-tertiary);
    pointer-events: none;
}
.ad-search-box input {
    width: 140px;
    height: 34px;
    padding: 0 12px 0 32px;
    border-radius: 8px;
    background: rgba(255,255,255,.04);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-size: 12.5px;
    outline: none;
    transition: all .2s ease;
}
.ad-search-box input::placeholder {
    color: var(--text-tertiary);
}
.ad-search-box input:focus {
    width: 200px;
    border-color: var(--cyan);
    box-shadow: 0 0 0 2px var(--cyan-dim);
}

.ad-filter-dropdown select {
    height: 34px;
    padding: 0 28px 0 12px;
    border-radius: 8px;
    background: rgba(255,255,255,.04);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-size: 12.5px;
    outline: none;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    transition: border-color .15s;
}
.ad-filter-dropdown {
    position: relative;
}
.ad-filter-dropdown::after {
    content: '';
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4.5px solid var(--text-muted);
    pointer-events: none;
}
.ad-filter-dropdown select:focus {
    border-color: var(--cyan);
}

/* ---- 作品网格（3列） ---- */
.ad-works-grid {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 16px !important;
    width: 100%;
}

/* 作品卡片 - 毛玻璃效果 */
.ad-work-card {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: all .35s cubic-bezier(.25,.46,.45,.94);
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.08);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}
.ad-work-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255,255,255,.16);
    box-shadow: 0 12px 40px rgba(0,0,0,.4), 0 0 1px rgba(255,255,255,.08) inset;
}
.ad-work-card:hover .ad-work-cover img,
.ad-work-card:hover .ad-work-cover video,
.ad-work-card:hover .ad-work-cover > div {
    transform: scale(1.05);
}

/* 封面区域（信息叠加在底部） */
.ad-work-cover {
    aspect-ratio: 4/3;
    position: relative;
    overflow: hidden;
}
.ad-work-cover img,
.ad-work-cover video,
.ad-work-cover > div {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .45s ease;
}

/* 信息区 - 叠加在封面底部，毛玻璃渐变遮罩 */
.ad-work-info {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 28px 12px 10px;
    background: rgba(96,96,96,0.2);
}
.ad-work-title {
    font-size: 14px;
    font-weight: 600;
    color: #f0f0f0;
    line-height: 1.4;
    margin-bottom: 6px;
    display: block;
    text-shadow: 0 1px 3px rgba(0,0,0,.5);
}
.ad-work-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.ad-work-author {
    display: flex;
    align-items: center;
    gap: 5px;
    min-width: 0;
}
.ad-work-author-avatar {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}
.ad-work-author-name {
    font-size: 11.5px;
    color: rgba(255,255,255,.55);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.ad-work-stats {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
    font-size: 11.5px;
    color: rgba(255,255,255,.45);
    cursor: pointer;
    transition: color .15s;
}
.ad-work-stats:hover {
    color: #fbbf24;
}

/* Load more */
.ad-load-more {
    display: flex;
    justify-content: center;
    margin-top: 28px;
}
.ad-load-more-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 32px;
    border-radius: 10px;
    font-size: 13px;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    cursor: pointer;
    background: transparent;
    transition: all .2s ease;
}
.ad-load-more-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    background: rgba(255,255,255,.02);
}

/* Empty state */
.ad-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}
.ad-empty p {
    font-size: 13px;
}

/* ========================================
   Apply Modal
   ======================================== */
.ad-apply-overlay {
    position: fixed;
    inset: 0;
    z-index: 4000;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,.6);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}
.ad-apply-overlay.show {
    display: flex;
}
.ad-apply-backdrop {
    position: absolute;
    inset: 0;
}
.ad-apply-panel {
    position: relative;
    width: 560px;
    max-width: 94%;
    background: #111114;
    border: 1px solid rgba(255,255,255,.08);
    border-radius: 16px;
    padding: 28px 28px 24px;
    box-shadow: 0 24px 64px rgba(0,0,0,.55);
    animation: adFadeIn .25s ease;
    max-height: 90vh;
    overflow-y: auto;
}
@keyframes adFadeIn {
    from { opacity: 0; transform: translateY(12px) scale(.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
.ad-apply-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    cursor: pointer;
    transition: .15s;
    background: none;
    border: none;
}
.ad-apply-close:hover {
    background: rgba(255,255,255,.08);
    color: var(--text-primary);
}
.ad-apply-title {
    font-family: var(--font-title);
    font-size: 18px;
    font-weight: 600;
    color: #fff;
    text-align: center;
    margin: 0 0 22px;
    padding-right: 24px;
}
.ad-apply-form { }
.ad-apply-tip {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 14px;
    margin-bottom: 20px;
    border-radius: 10px;
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.06);
}
.ad-apply-tip-icon {
    flex-shrink: 0;
    font-size: 16px;
    line-height: 1.4;
}
.ad-apply-tip p {
    margin: 0;
    font-size: 12px;
    line-height: 1.65;
    color: rgba(255,255,255,.72);
}
.ad-form-group {
    margin-bottom: 18px;
}
.ad-form-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: rgba(255,255,255,.88);
    margin-bottom: 8px;
}
.ad-form-label-sub {
    font-weight: 400;
    color: rgba(255,255,255,.45);
}
.ad-form-subhint {
    margin: 6px 0 0;
    font-size: 11px;
    line-height: 1.5;
    color: rgba(255,255,255,.38);
}
.ad-required {
    color: #f87171;
}
.ad-form-select-wrapper {
    position: relative;
}
.ad-form-select {
    width: 100%;
    height: 44px;
    padding: 0 36px 0 14px;
    border-radius: 10px;
    background: rgba(255,255,255,.04);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    transition: border-color .15s;
}
.ad-form-select:focus {
    border-color: var(--cyan);
    box-shadow: 0 0 0 3px var(--cyan-dim);
}
.ad-form-select option {
    background: #1e1f2a;
    color: #e0e2ea;
    padding: 8px 14px;
}
.ad-select-arrow {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--text-muted);
}
.ad-form-textarea {
    width: 100%;
    padding: 12px 14px;
    border-radius: 10px;
    background: rgba(255,255,255,.04);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-size: 13px;
    line-height: 1.6;
    outline: none;
    resize: vertical;
    min-height: 80px;
    transition: border-color .15s;
}
.ad-form-textarea:focus {
    border-color: var(--cyan);
    box-shadow: 0 0 0 3px var(--cyan-dim);
}
.ad-form-textarea::placeholder {
    color: rgba(255,255,255,.15);
}
.ad-form-hint {
    font-size: 11px;
    color: var(--text-tertiary);
    margin-top: 4px;
    text-align: right;
}
.ad-form-agree {
    margin-bottom: 20px;
}
.ad-agree-label {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 12px;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1.5;
}
.ad-agree-label input[type="checkbox"] {
    accent-color: var(--cyan);
    width: 14px;
    height: 14px;
    margin-top: 2px;
    flex-shrink: 0;
    cursor: pointer;
}
.ad-agree-label a {
    color: var(--cyan);
    text-decoration: underline;
    text-underline-offset: 2px;
}
/* 表单区域标题 */
.ad-form-section {
    margin-bottom: 8px;
}
.ad-form-section-first {
    padding-top: 0;
    border-top: none;
}
.ad-form-section-title {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin: 0 0 16px;
}

/* 昵称行 */
.ad-nickname-row {
    position: relative;
}
.ad-nickname-input {
    padding-right: 88px;
    background: rgba(255,255,255,.03);
    cursor: default;
}
.ad-nickname-edit {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    height: 30px;
    padding: 0 10px;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: rgba(255,255,255,.55);
    font-size: 12px;
    cursor: pointer;
    transition: color .15s, background .15s;
}
.ad-nickname-edit:hover {
    color: #fff;
    background: rgba(255,255,255,.06);
}

/* 字数统计 */
.ad-textarea-wrap {
    position: relative;
}
.ad-form-textarea-counted {
    padding-bottom: 28px;
    min-height: 110px;
}
.ad-char-count {
    position: absolute;
    right: 12px;
    bottom: 10px;
    font-size: 11px;
    color: rgba(255,255,255,.35);
    pointer-events: none;
}

/* 联系方式 */
.ad-contact-row {
    display: flex;
    gap: 10px;
}
.ad-contact-type-wrap {
    position: relative;
    flex: 0 0 108px;
}
.ad-contact-type {
    height: 44px;
    padding: 0 30px 0 12px;
}
.ad-contact-input {
    flex: 1;
    min-width: 0;
}

/* 社媒链接 */
.ad-social-input-row {
    display: flex;
    gap: 8px;
}
.ad-social-input {
    flex: 1;
    min-width: 0;
}
.ad-social-add-btn {
    flex: 0 0 44px;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,.1);
    background: rgba(255,255,255,.04);
    color: rgba(255,255,255,.75);
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    transition: background .15s, border-color .15s;
}
.ad-social-add-btn:hover {
    background: rgba(255,255,255,.08);
    border-color: rgba(255,255,255,.16);
}
.ad-social-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}
.ad-social-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    max-width: 100%;
    padding: 6px 10px;
    border-radius: 8px;
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.08);
    font-size: 12px;
    color: rgba(255,255,255,.82);
}
.ad-social-tag span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.ad-social-tag-remove {
    flex-shrink: 0;
    width: 16px;
    height: 16px;
    border: none;
    border-radius: 50%;
    background: rgba(255,255,255,.08);
    color: rgba(255,255,255,.55);
    font-size: 12px;
    line-height: 1;
    cursor: pointer;
}
.ad-social-tag-remove:hover {
    color: #fff;
    background: rgba(255,255,255,.14);
}

/* 单选 */
.ad-radio-group {
    display: flex;
    align-items: center;
    gap: 28px;
}
.ad-radio-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255,255,255,.82);
    cursor: pointer;
    user-select: none;
}
.ad-radio-item input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}
.ad-radio-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 1.5px solid rgba(255,255,255,.28);
    position: relative;
    flex-shrink: 0;
    transition: border-color .15s;
}
.ad-radio-item input:checked + .ad-radio-dot {
    border-color: #3b82f6;
}
.ad-radio-item input:checked + .ad-radio-dot::after {
    content: '';
    position: absolute;
    inset: 3px;
    border-radius: 50%;
    background: #3b82f6;
}

/* 文本输入框 */
.ad-form-input {
    width: 100%;
    height: 44px;
    padding: 0 14px;
    border-radius: 10px;
    background: rgba(255,255,255,.04);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
    transition: border-color .15s;
    box-sizing: border-box;
}
.ad-form-input:focus {
    border-color: var(--cyan);
    box-shadow: 0 0 0 3px var(--cyan-dim);
}
.ad-form-input::placeholder {
    color: rgba(255,255,255,.15);
}

/* 底部按钮行 */
.ad-apply-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    padding-top: 4px;
}
.ad-apply-cancel-btn {
    flex: 1;
    height: 44px;
    border-radius: 999px;
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.1);
    color: rgba(255,255,255,.78);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all .2s ease;
}
.ad-apply-cancel-btn:hover {
    background: rgba(255,255,255,.08);
    color: #fff;
    border-color: rgba(255,255,255,.16);
}
.ad-apply-submit-btn {
    flex: 1;
    height: 44px;
    border-radius: 999px;
    background: #fff;
    color: #111;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all .2s ease;
    border: none;
}
.ad-apply-submit-btn:hover {
    background: #f3f4f6;
}
.ad-apply-submit-btn:disabled {
    opacity: .55;
    cursor: not-allowed;
}
.ad-apply-error {
    text-align: center;
    font-size: 12.5px;
    color: #f87171;
    min-height: 20px;
    margin-top: 8px;
}
.ad-apply-success {
    text-align: center;
    padding: 24px 0 8px;
    display: none;
}
.ad-apply-success svg {
    margin-bottom: 12px;
}
.ad-apply-success p {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}
.ad-apply-success span {
    font-size: 13px;
    color: var(--text-muted);
}

/* ========================================
   Preview Modal
   ======================================== */
.ad-preview-overlay {
    position: fixed;
    inset: 0;
    z-index: 4500;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.ad-preview-overlay.show {
    display: flex;
}
.ad-preview-backdrop {
    position: absolute;
    inset: 0;
}
.ad-preview-panel {
    position: relative;
    width: 680px;
    max-width: 94%;
    max-height: 90vh;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 24px 72px rgba(0,0,0,.6);
    animation: adFadeIn .25s ease;
    display: flex;
    flex-direction: column;
}
.ad-preview-close {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 10;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,.5);
    backdrop-filter: blur(6px);
    color: #fff;
    cursor: pointer;
    transition: .15s;
    border: none;
}
.ad-preview-close:hover {
    background: rgba(0,0,0,.7);
}
.ad-preview-media {
    aspect-ratio: 16/10;
    background: var(--bg-deep);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.ad-preview-media img,
.ad-preview-media video {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.ad-preview-info {
    padding: 18px 22px 22px;
}
.ad-preview-author {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}
.ad-preview-author-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
    background: var(--gradient);
}
.ad-preview-author-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}
.ad-preview-time {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 2px;
}
.ad-preview-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}
.ad-preview-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
}
.ad-preview-stats {
    display: flex;
    align-items: center;
    gap: 16px;
}
.ad-preview-stat {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--text-muted);
}

/* ========================================
   Detail Responsive
   ======================================== */
@media (max-width: 1100px) {
    .ad-works-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
    .ad-info-row { flex-direction: column; align-items: flex-start; gap: 14px; }
    .ad-top-right { align-self: flex-end; }
    .ad-works-header { align-items: center; }
}
@media (max-width: 768px) {
    .arena-detail-page { padding: calc(var(--nav-h) + 16px) 14px 36px; }
    .ad-event-title { font-size: 17px; }
    .ad-works-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .ad-works-toolbar { width: 100%; }
    .ad-search-box input { width: 120px; }
    .ad-search-box input:focus { width: 160px; }
    .ad-preview-panel { max-height: 95vh; }
    /* 移动端隐藏用户昵称 */
    .ad-work-author-name { display: none !important; }
    .ad-apply-panel { padding: 24px 20px 20px; }
    .ad-apply-title { font-size: 18px; }
    .ad-apply-actions { flex-direction: column; gap: 8px; }
    .ad-apply-cancel-btn { height: 42px; font-size: 13px; }
    .ad-apply-submit-btn { height: 42px; font-size: 13px; }
}
@media (max-width: 480px) {
    .ad-works-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
    .ad-work-info { padding: 22px 8px 8px; }
    .ad-work-title { font-size: 12.5px; }
    .ad-apply-panel { padding: 20px 14px 16px; max-width: 96%; }
    .ad-apply-title { font-size: 16px; }
    .ad-apply-actions { flex-direction: column; gap: 6px; }
    .ad-apply-cancel-btn { height: 40px; font-size: 12px; border-radius: 8px; }
    .ad-apply-submit-btn { height: 40px; font-size: 12px; border-radius: 8px; }
    .ad-form-select { height: 40px; font-size: 12px; }
    .ad-form-input { height: 40px; font-size: 12px; }
    .ad-form-textarea { font-size: 12px; min-height: 64px; }
    .ad-form-section-title { font-size: 14px; }
}