/* ============================================================
   转转 · 优秀导师评选 — 红白设计系统
   主色 转转红 #FF3B30 · 暖红 #FF5A3C · 背景 #F6F7F9
   ============================================================ */

:root {
  --red: #FF3B30;
  --red-2: #FF5A3C;
  --red-dark: #E51F1A;
  --red-soft: #FFF1F0;
  --red-ring: rgba(255, 59, 48, .16);

  --bg: #F6F7F9;
  --surface: #FFFFFF;

  --text: #1A1A1F;
  --text-2: #6B7280;
  --text-3: #9AA0AB;

  --grad: linear-gradient(135deg, #FF5A3C 0%, #FF3B30 100%);
  --grad-soft: linear-gradient(135deg, #FFF4F2 0%, #FFE9E6 100%);

  --border: #ECEEF2;
  --border-strong: #E0E3EA;

  --radius-card: 40px;
  --radius-ctl: 22px;
  --radius-sm: 16px;

  --shadow-card: 0 18px 46px rgba(23, 27, 40, .08), 0 3px 10px rgba(23, 27, 40, .05);
  --shadow-hover: 0 26px 60px rgba(255, 59, 48, .14), 0 8px 20px rgba(23, 27, 40, .08);
  --shadow-glow: 0 14px 40px rgba(255, 59, 48, .32);
  --spring: cubic-bezier(.34, 1.56, .64, 1);
  --ease: cubic-bezier(.4, 0, .2, 1);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "HarmonyOS Sans SC", "HarmonyOS Sans", -apple-system, BlinkMacSystemFont,
    "PingFang SC", "Segoe UI", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 15.5px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  overflow-x: hidden;
}

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }

/* ==================== 背景场景（红白光晕 + 星环 + 粒子） ==================== */
.bg-scene { position: fixed; inset: 0; z-index: -1; overflow: hidden;
  background:
    radial-gradient(1100px 760px at 50% -12%, #FFFFFF 0%, var(--bg) 62%),
    var(--bg); }

.bg-grid { position: absolute; inset: 0;
  background-image: radial-gradient(rgba(255, 59, 48, .05) 1px, transparent 1.4px);
  background-size: 34px 34px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 20%, transparent 74%);
  mask-image: radial-gradient(ellipse at 50% 0%, #000 20%, transparent 74%); }

.orb { position: absolute; border-radius: 50%; filter: blur(90px); will-change: transform; }
.orb-1 { width: 560px; height: 560px; background: radial-gradient(circle, rgba(255, 59, 48, .20), transparent 68%); top: -190px; left: -140px; animation: drift1 26s ease-in-out infinite; }
.orb-2 { width: 520px; height: 520px; background: radial-gradient(circle, rgba(255, 90, 60, .16), transparent 68%); bottom: -200px; right: -130px; animation: drift2 32s ease-in-out infinite; }
.orb-3 { width: 460px; height: 460px; background: radial-gradient(circle, rgba(255, 59, 48, .10), transparent 68%); top: 38%; left: 56%; animation: drift3 38s ease-in-out infinite; }

@keyframes drift1 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(60px, 40px) scale(1.12); } }
@keyframes drift2 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(-70px, -30px) scale(1.1); } }
@keyframes drift3 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(-50px, 60px) scale(1.14); } }

.star-ring { position: absolute; border-radius: 50%; transform-style: preserve-3d; will-change: transform; }
.star-ring.r1 { width: 540px; height: 540px; top: -110px; right: -150px;
  border: 1.5px solid rgba(255, 59, 48, .22);
  box-shadow: 0 0 60px rgba(255, 59, 48, .14), inset 0 0 46px rgba(255, 90, 60, .10);
  transform: rotateX(70deg) rotateZ(-20deg); animation: ringSpin 46s linear infinite; }
.star-ring.r1::before { content: ''; position: absolute; inset: 16px; border-radius: 50%;
  border: 1.5px dashed rgba(255, 90, 60, .28); }
.star-ring.r1::after { content: ''; position: absolute; inset: 46px; border-radius: 50%;
  border: 1px solid rgba(255, 59, 48, .12); }
.star-ring.r2 { width: 360px; height: 360px; top: -60px; right: -60px;
  border: 1.5px solid rgba(255, 90, 60, .20);
  box-shadow: 0 0 40px rgba(255, 59, 48, .12);
  transform: rotateX(72deg) rotateZ(32deg); animation: ringSpin 34s linear infinite reverse; }
.star-ring.r2::before { content: ''; position: absolute; inset: 22px; border-radius: 50%;
  border: 1.5px dashed rgba(255, 59, 48, .26); }

@keyframes ringSpin { from { transform: rotateX(70deg) rotateZ(0deg); } to { transform: rotateX(70deg) rotateZ(360deg); } }
.star-ring.r2 { animation-name: ringSpin2; }
@keyframes ringSpin2 { from { transform: rotateX(72deg) rotateZ(0deg); } to { transform: rotateX(72deg) rotateZ(360deg); } }

.particles { position: absolute; inset: 0; }
.particle { position: absolute; border-radius: 50%;
  background: var(--c, #FF3B30); box-shadow: 0 0 10px var(--c, #FF3B30);
  animation: particleFloat 16s ease-in-out infinite; opacity: 0; }
@keyframes particleFloat {
  0% { transform: translate(0, 0); opacity: 0; }
  12% { opacity: var(--o, .5); }
  50% { transform: translate(var(--dx, 14px), -54px) scale(1.1); }
  88% { opacity: var(--o, .5); }
  100% { transform: translate(calc(var(--dx, 14px) * -1), -118px) scale(.9); opacity: 0; }
}

/* ==================== 顶栏 ==================== */
.topbar { position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .68);
  backdrop-filter: blur(30px) saturate(180%);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  border-bottom: 1px solid var(--border); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding-top: 13px; padding-bottom: 13px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 13px; }
.zz-logo { flex-shrink: 0; border-radius: 50%; box-shadow: 0 6px 18px rgba(255, 59, 48, .32); }
.brand-title { font-size: 19px; font-weight: 800; letter-spacing: .01em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.brand-sub { font-size: 12px; color: var(--text-3); margin-top: 1px; letter-spacing: .03em; }

.tabs { display: flex; gap: 6px; padding: 5px; border-radius: 999px;
  background: #fff; border: 1px solid var(--border); box-shadow: 0 4px 16px rgba(23,27,40,.05); }
.tab { border: 0; background: transparent; color: var(--text-2); font-size: 14px; font-weight: 600;
  padding: 9px 16px; border-radius: 999px; cursor: pointer; white-space: nowrap;
  transition: all .28s var(--spring); }
.tab:hover { color: var(--text); background: var(--red-soft); }
.tab.active { color: #fff; background: var(--grad); box-shadow: var(--shadow-glow); }

/* ==================== 布局 ==================== */
main { padding: 34px 24px 80px; }
.view { animation: viewIn .5s var(--ease); }
@keyframes viewIn { from { opacity: 0; transform: translateY(14px) scale(.99); } to { opacity: 1; transform: none; } }

/* 毛玻璃白卡片 */
.card {
  background: rgba(255, 255, 255, .78);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 36px 40px; margin-bottom: 24px;
  transition: transform .34s var(--spring), box-shadow .34s var(--ease);
}
.card:hover { box-shadow: var(--shadow-hover); }
.card-head { margin-bottom: 26px; }
.card-head h2 { margin: 0 0 6px; font-size: 26px; font-weight: 800; }
.card-center { max-width: 460px; margin: 48px auto; }
.muted { color: var(--text-3); font-size: 13px; }
.req { color: var(--red); }

/* ==================== 规则页 ==================== */
.rule-card { max-width: 900px; margin: 0 auto; }
.rule-head { text-align: center; padding-bottom: 26px; margin-bottom: 10px; border-bottom: 1px solid var(--border); }
.rule-head h1 { margin: 0 0 12px; font-size: clamp(30px, 5vw, 40px); font-weight: 800; letter-spacing: .01em; line-height: 1.25;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.rule-sub { color: var(--text-2); font-size: 15px; margin: 0; max-width: 560px; margin-inline: auto; }

.rule-body h2 { font-size: 20px; margin: 34px 0 12px; font-weight: 800; letter-spacing: .01em;
  display: flex; align-items: center; gap: 12px; }
.rule-body h2::before { content: ''; width: 6px; height: 24px; border-radius: 4px; background: var(--grad); }
.rule-body h3 { font-size: 16px; margin: 20px 0 8px; color: var(--text); font-weight: 700; }
.rule-body p, .rule-body li { color: var(--text-2); }
.rule-body ul, .rule-body ol { margin: 8px 0; padding-left: 24px; }
.rule-body li { margin: 7px 0; }
.rule-body li::marker { color: var(--red); }
.rule-body b { color: var(--text); font-weight: 700; }
.rule-body mark { background: var(--red-soft); color: var(--red-dark); padding: 1px 7px; border-radius: 8px; font-weight: 700; }
.rule-note { color: var(--red-dark); background: var(--red-soft); border: 1px solid var(--red-ring);
  border-radius: 12px; padding: 7px 14px; display: inline-block; font-size: 13.5px; }

/* ==================== 表单 ==================== */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 18px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 8px; color: var(--text-2); }
input[type=text], input[type=password], textarea, select {
  width: 100%; padding: 13px 16px; border: 1px solid var(--border-strong);
  border-radius: var(--radius-ctl); font-size: 14.5px; font-family: inherit; color: var(--text);
  background: #fff; transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
input::placeholder, textarea::placeholder { color: var(--text-3); }
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--red);
  box-shadow: 0 0 0 4px rgba(255, 59, 48, .12); }
textarea { resize: vertical; }

.radio-row { display: flex; gap: 10px; flex-wrap: wrap; }
.radio { display: inline-flex; align-items: center; gap: 8px; padding: 10px 16px;
  border: 1px solid var(--border-strong); border-radius: 999px; cursor: pointer; font-size: 14px; color: var(--text-2);
  background: #fff; transition: all .24s var(--spring); }
.radio:hover { border-color: var(--red); color: var(--text); transform: translateY(-1px); }
.radio input { display: none; }
.radio:has(input:checked) { background: var(--grad); border-color: transparent; color: #fff; font-weight: 700; box-shadow: var(--shadow-glow); }

.check { display: flex; align-items: flex-start; gap: 9px; font-size: 13.5px; color: var(--text-2); margin: 22px 0; cursor: pointer; }
.check input { margin-top: 3px; accent-color: var(--red); }

.upload-area { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.thumb-grid { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 14px; }
.thumb { position: relative; width: 96px; height: 96px; border-radius: 20px; overflow: hidden;
  border: 1px solid var(--border-strong); box-shadow: var(--shadow-card); }
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumb-del { position: absolute; top: 6px; right: 6px; width: 22px; height: 22px; border-radius: 50%;
  background: rgba(255, 255, 255, .86); color: var(--red); border: 1px solid var(--border-strong); font-size: 12px; line-height: 1;
  cursor: pointer; display: flex; align-items: center; justify-content: center; backdrop-filter: blur(6px); }

.form-actions { display: flex; align-items: center; gap: 16px; margin-top: 8px; flex-wrap: wrap; }

/* ==================== 按钮 ==================== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 7px; border: 0;
  border-radius: var(--radius-ctl); padding: 12px 22px; font-size: 14.5px; font-weight: 700; font-family: inherit;
  cursor: pointer; transition: transform .26s var(--spring), box-shadow .26s var(--ease), background .2s; }
.btn-primary { background: var(--grad); background-size: 150% 150%; color: #fff; box-shadow: var(--shadow-glow);
  animation: gradShift 6s ease infinite; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 48px rgba(255, 59, 48, .42); }
.btn-primary:active { transform: translateY(0) scale(.98); }
.btn-primary:disabled { opacity: .55; cursor: not-allowed; animation: none; }
@keyframes gradShift { 0%,100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }

.btn-outline { background: #fff; color: var(--text); border: 1px solid var(--border-strong); }
.btn-outline:hover { border-color: var(--red); color: var(--red); transform: translateY(-1px); box-shadow: 0 6px 18px rgba(255,59,48,.12); }
.btn-lg { padding: 14px 30px; font-size: 16px; border-radius: 26px; }
.btn-block { width: 100%; }
.btn-danger { background: var(--red-soft); color: var(--red-dark); border: 1px solid var(--red-ring); }

/* ==================== 管理后台 ==================== */
.admin-bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.admin-bar h2 { margin: 0; font-size: 22px; font-weight: 800; }
.admin-bar .muted { margin: 3px 0 0; }
.admin-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.table-wrap { overflow-x: auto; margin: 0 -12px; padding: 0 12px; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.admin-table th, .admin-table td { text-align: left; padding: 13px 14px; border-bottom: 1px solid var(--border); white-space: nowrap; }
.admin-table th { color: var(--text-3); font-size: 12.5px; font-weight: 600; letter-spacing: .03em; }
.admin-table tbody tr { transition: background .2s; }
.admin-table tbody tr:hover { background: var(--red-soft); }
.admin-table .row-name { font-weight: 700; color: var(--text); }
.badge { display: inline-block; padding: 4px 12px; border-radius: 999px; font-size: 12px; font-weight: 700; letter-spacing: .02em; }
.badge-pending { background: #FFF6E5; color: #B7791F; border: 1px solid #F3E2C0; }
.badge-public { background: #EAF2FF; color: #1D4ED8; border: 1px solid #C9DDFF; }
.badge-shortlisted { background: #F3EDFF; color: #7C3AED; border: 1px solid #E0D1FF; }
.badge-awarded { background: #E8F8EF; color: #0F9D58; border: 1px solid #C4EBD6; }
.badge-rejected { background: #FFECEC; color: #D92D20; border: 1px solid #F5C6C6; }
.status-select { padding: 7px 12px; border: 1px solid var(--border-strong); border-radius: 12px; font-size: 13px; background: #fff; color: var(--text); }
.empty { text-align: center; color: var(--text-3); padding: 48px 0; }
.link-btn { background: none; border: 0; color: var(--red); cursor: pointer; font-size: 13.5px; font-weight: 600; padding: 0; transition: color .2s; }
.link-btn:hover { color: var(--red-dark); }

/* ==================== 详情弹窗 ==================== */
.modal-overlay { position: fixed; inset: 0; background: rgba(26, 26, 31, .32); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center; z-index: 100; padding: 20px; }
.modal-box { background: rgba(255, 255, 255, .94); backdrop-filter: blur(30px) saturate(160%);
  -webkit-backdrop-filter: blur(30px) saturate(160%);
  border: 1px solid rgba(255, 255, 255, .9); border-radius: 36px; box-shadow: var(--shadow-hover);
  max-width: 700px; width: 100%; max-height: 86vh; overflow-y: auto; padding: 30px 34px; position: relative;
  animation: viewIn .36s var(--spring); }
.modal-close { position: absolute; top: 16px; right: 20px; background: none; border: 0; font-size: 26px;
  color: var(--text-3); cursor: pointer; transition: color .2s, transform .2s; }
.modal-close:hover { color: var(--red); transform: rotate(90deg); }
.detail-block { margin-bottom: 18px; }
.detail-block h4 { margin: 0 0 5px; font-size: 12.5px; color: var(--text-3); font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
.detail-block p { margin: 0; white-space: pre-wrap; color: var(--text-2); }
.detail-img { display: inline-block; width: 128px; height: 128px; object-fit: cover; border-radius: 18px;
  border: 1px solid var(--border-strong); margin: 4px 10px 0 0; cursor: zoom-in; transition: transform .2s var(--spring); }
.detail-img:hover { transform: scale(1.03); }

/* ==================== toast ==================== */
.toast { position: fixed; left: 50%; bottom: 34px; transform: translateX(-50%) translateY(20px);
  background: rgba(255, 255, 255, .92); backdrop-filter: blur(20px); color: var(--text);
  padding: 13px 24px; border-radius: 999px; font-size: 14px; font-weight: 600;
  border: 1px solid var(--border-strong); box-shadow: var(--shadow-hover);
  opacity: 0; pointer-events: none; transition: all .3s var(--spring); z-index: 200; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { border-color: rgba(255, 59, 48, .4); box-shadow: 0 16px 44px rgba(255, 59, 48, .2); }
.toast.success { border-color: rgba(16, 185, 129, .4); box-shadow: 0 16px 44px rgba(16, 185, 129, .2); }

/* ==================== 响应式 ==================== */
@media (max-width: 760px) {
  .form-grid { grid-template-columns: 1fr; }
  .card { padding: 26px 22px; border-radius: 30px; }
  .topbar-inner { flex-direction: column; align-items: flex-start; gap: 12px; }
  .tabs { width: 100%; }
  .tab { flex: 1; text-align: center; }
  .rule-head h1 { font-size: 28px; }
  .orb { filter: blur(70px); }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}