/* ═══════════════════════════════════════════════════════════
   FUNDMASTER AI — Stylesheet
   拆分自原始单文件，新增亮色主题支持
   ═══════════════════════════════════════════════════════════ */

/* ─── 主题变量（暗色 — 默认） ─── */
:root {
  --bg: #0a0a0f;
  --bg2: #10101a;
  --bg3: #16162a;
  --surface: #1a1a2e;
  --surface2: #20203a;
  --border: rgba(120, 100, 255, 0.15);
  --border2: rgba(120, 100, 255, 0.3);
  --accent: #7c5cfc;
  --accent2: #a78bfa;
  --accent3: #38bdf8;
  --gold: #f59e0b;
  --green: #10b981;
  --red: #ef4444;
  --orange: #f97316;
  --text: #e8e6ff;
  --text2: #a09fcc;
  --text3: #6b6a99;
  --glow: rgba(124, 92, 252, 0.4);
  --shadow-hover: rgba(0, 0, 0, 0.3);
  --nav-bg: rgba(10, 10, 15, 0.85);
}

/* ─── 主题变量（亮色） ─── */
[data-theme="light"] {
  --bg: #f5f5fa;
  --bg2: #ffffff;
  --bg3: #ededf5;
  --surface: #ffffff;
  --surface2: #f8f8ff;
  --border: rgba(120, 100, 255, 0.1);
  --border2: rgba(120, 100, 255, 0.22);
  --accent: #7c5cfc;
  --accent2: #6d4de8;
  --accent3: #0891d2;
  --gold: #d97706;
  --green: #059669;
  --red: #dc2626;
  --orange: #ea580c;
  --text: #1a1a2e;
  --text2: #55557a;
  --text3: #9999b8;
  --glow: rgba(124, 92, 252, 0.18);
  --shadow-hover: rgba(124, 92, 252, 0.08);
  --nav-bg: rgba(255, 255, 255, 0.82);
}

/* ─── 主题切换过渡动画（仅在切换时生效） ─── */
html.theme-transition,
html.theme-transition *,
html.theme-transition *::before,
html.theme-transition *::after {
  transition: background-color 0.4s ease,
              color 0.4s ease,
              border-color 0.4s ease,
              box-shadow 0.4s ease !important;
}

/* ─── 重置 ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ─── 背景装饰（暗色） ─── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgba(124, 92, 252, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(56, 189, 248, 0.08) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(120, 100, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 100, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ─── 背景装饰（亮色覆盖） ─── */
[data-theme="light"] body::before {
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgba(124, 92, 252, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(56, 189, 248, 0.04) 0%, transparent 60%);
}

[data-theme="light"] body::after {
  background-image:
    linear-gradient(rgba(120, 100, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 100, 255, 0.05) 1px, transparent 1px);
}

/* ─── 页面切换 ─── */
.page { display: none; position: relative; z-index: 1; animation: fadeUp 0.5s ease; }
.page.active { display: block; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── 导航栏 ─── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  height: 64px;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.05em;
  background: linear-gradient(135deg, var(--accent2), var(--accent3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  cursor: pointer;
}

.nav-logo span {
  font-weight: 400;
  opacity: 0.6;
  -webkit-text-fill-color: transparent;
}

.nav-right { display: flex; align-items: center; gap: 12px; }

/* ─── 数据同步状态指示器 ─── */
.sync-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  padding: 3px 10px;
  border-radius: 20px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.sync-badge.online {
  background: rgba(16, 185, 129, 0.1);
  color: var(--green);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.sync-badge.offline {
  background: rgba(160, 159, 204, 0.08);
  color: var(--text3);
  border: 1px solid var(--border);
}

.role-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--border2);
  color: var(--accent2);
  background: rgba(124, 92, 252, 0.08);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.btn-role {
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  font-weight: 500;
  padding: 7px 18px;
  border-radius: 8px;
  border: 1px solid var(--border2);
  background: transparent;
  color: var(--text2);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-role:hover { background: var(--surface); color: var(--text); }

/* ─── 主题切换按钮 ─── */
.theme-toggle {
  position: relative;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border2);
  background: transparent;
  color: var(--text2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--surface);
  color: var(--accent2);
  transform: rotate(20deg);
}

.theme-toggle svg {
  position: absolute;
  transition: opacity 0.35s ease, transform 0.35s ease;
}

/* 暗色模式：显示太阳图标（点击切到亮色） */
.theme-toggle .icon-sun  { opacity: 1; transform: rotate(0deg); }
.theme-toggle .icon-moon { opacity: 0; transform: rotate(-60deg) scale(0.7); }

/* 亮色模式：显示月亮图标（点击切到暗色） */
[data-theme="light"] .theme-toggle .icon-sun  { opacity: 0; transform: rotate(60deg) scale(0.7); }
[data-theme="light"] .theme-toggle .icon-moon { opacity: 1; transform: rotate(0deg); }

/* ─── HERO 区域 ─── */
.hero {
  padding: 80px 40px 48px;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent3);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero-tag::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--accent3);
}

.hero h1 {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(44px, 7vw, 80px);
  line-height: 1.0;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.hero h1 .grad {
  background: linear-gradient(135deg, #a78bfa 0%, #7c5cfc 40%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero h1 .dim { color: var(--text3); }

.hero-sub {
  font-size: 16px;
  color: var(--text2);
  font-weight: 300;
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: 40px;
}

/* ─── 统计行 ─── */
.stats-row {
  display: flex;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  max-width: 800px;
  margin-bottom: 64px;
}

.stat-item {
  flex: 1;
  padding: 20px 24px;
  background: var(--bg2);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.stat-value {
  font-family: 'Syne', sans-serif;
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
}

.stat-value.accent { color: var(--accent2); }
.stat-value.green  { color: var(--green); }
.stat-value.gold   { color: var(--gold); }

.stat-value-compact {
  font-size: 18px;
  padding-top: 5px;
}

.stat-sub {
  font-size: 12px;
  color: var(--text3);
}

/* ─── 区块标题 ─── */
.section-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 32px;
  padding: 0 40px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.section-header h2 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 22px;
  color: var(--text);
}

.section-header .hint {
  font-size: 13px;
  color: var(--text3);
  font-style: italic;
}

/* ─── 里程碑时间线 ─── */
.timeline-container {
  padding: 0 40px 80px;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.timeline-track {
  position: absolute;
  left: calc(40px + 32px);
  top: 0;
  bottom: 80px;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  opacity: 0.3;
}

.milestone-card {
  display: flex;
  gap: 28px;
  align-items: flex-start;
  margin-bottom: 20px;
  cursor: pointer;
  position: relative;
}

.milestone-dot {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: 'Syne', sans-serif;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  border: 1px solid;
  position: relative;
  z-index: 2;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.milestone-dot .dot-num {
  font-size: 18px;
  font-weight: 800;
}

.milestone-card:hover .milestone-dot {
  transform: scale(1.1);
  box-shadow: 0 0 24px var(--glow);
}

.milestone-body {
  flex: 1;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px 24px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.milestone-body::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(124, 92, 252, 0.05), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.milestone-card:hover .milestone-body {
  border-color: var(--border2);
  transform: translateX(4px);
  box-shadow: 0 8px 32px var(--shadow-hover);
}

.milestone-card:hover .milestone-body::before { opacity: 1; }

.milestone-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.milestone-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 15px;
  color: var(--text);
}

.ms-status {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  padding: 3px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
}

.ms-status.done     { background: rgba(16, 185, 129, 0.15); color: var(--green); border: 1px solid rgba(16, 185, 129, 0.3); }
.ms-status.active   { background: rgba(124, 92, 252, 0.15); color: var(--accent2); border: 1px solid rgba(124, 92, 252, 0.3); }
.ms-status.upcoming { background: rgba(160, 159, 204, 0.08); color: var(--text3); border: 1px solid var(--border); }
.ms-status.overdue  { background: rgba(239, 68, 68, 0.15); color: var(--red); border: 1px solid rgba(239, 68, 68, 0.3); }

.milestone-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--text3);
  margin-bottom: 10px;
}

.milestone-date .revised {
  color: var(--orange);
  margin-left: 8px;
  text-decoration: line-through;
  opacity: 0.5;
  font-size: 11px;
}

.members-preview {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.members-preview-label {
  font-size: 11px;
  color: var(--text3);
}

.member-dots {
  display: flex;
}

.member-dot-avatar {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid var(--bg2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  font-weight: 700;
  margin-left: -6px;
  font-family: 'Syne', sans-serif;
}

.submitted-count {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--green);
  margin-left: 8px;
}

.click-hint {
  position: absolute;
  right: 20px;
  bottom: 16px;
  font-size: 11px;
  color: var(--text3);
  display: flex;
  align-items: center;
  gap: 6px;
  opacity: 0;
  transition: opacity 0.2s;
}

.milestone-card:hover .click-hint { opacity: 1; }
.click-hint svg { width: 14px; height: 14px; }

/* ─── 里程碑状态颜色 ─── */
.status-done .milestone-dot     { background: rgba(16, 185, 129, 0.1); border-color: rgba(16, 185, 129, 0.4); color: var(--green); }
.status-active .milestone-dot   { background: rgba(124, 92, 252, 0.15); border-color: var(--accent); color: var(--accent2); box-shadow: 0 0 20px rgba(124, 92, 252, 0.3); }
.status-upcoming .milestone-dot { background: rgba(160, 159, 204, 0.05); border-color: var(--border); color: var(--text3); }
.status-overdue .milestone-dot  { background: rgba(239, 68, 68, 0.1); border-color: rgba(239, 68, 68, 0.4); color: var(--red); }

/* ─── 进度条 ─── */
.progress-section {
  max-width: 1200px;
  margin: 0 auto 48px;
  padding: 0 40px;
}

.progress-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px 32px;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 20px;
}

.progress-title {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 16px;
}

.progress-pct {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 32px;
  color: var(--accent2);
}

.progress-track {
  height: 8px;
  background: var(--bg3);
  border-radius: 100px;
  overflow: hidden;
  margin-bottom: 16px;
}

.progress-fill {
  height: 100%;
  border-radius: 100px;
  background: linear-gradient(90deg, var(--accent), var(--accent2), var(--accent3));
  transition: width 1s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 0 12px rgba(124, 92, 252, 0.5);
}

.phase-labels {
  display: flex;
  justify-content: space-between;
}

.phase-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ─── 团队区域 ─── */
.team-section {
  max-width: 1200px;
  margin: 0 auto 80px;
  padding: 0 40px;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.team-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px 16px;
  text-align: center;
  transition: all 0.3s ease;
}

.team-card:hover {
  border-color: var(--border2);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px var(--shadow-hover);
}

.team-avatar {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  margin: 0 auto 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 20px;
  background: linear-gradient(135deg, var(--accent), var(--accent3));
  color: white;
}

.team-name {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 4px;
}

.team-role {
  font-size: 11px;
  color: var(--text3);
  margin-bottom: 12px;
}

.online-dot {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  color: var(--green);
}

.online-dot::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.3; }
}

/* ─── 对齐日志 ─── */
.alignment-section {
  max-width: 1200px;
  margin: 0 auto 80px;
  padding: 0 40px;
}

.log-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px 32px;
  margin-bottom: 12px;
}

.log-entry {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.log-entry:last-child { border-bottom: none; }

.log-avatar {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 13px;
}

.log-content { flex: 1; }

.log-meta {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 6px;
}

.log-author {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 13px;
}

.log-time {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text3);
}

.log-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.log-tag.supervisor { background: rgba(245, 158, 11, 0.15); color: var(--gold); border: 1px solid rgba(245, 158, 11, 0.3); }
.log-tag.student    { background: rgba(56, 189, 248, 0.1); color: var(--accent3); border: 1px solid rgba(56, 189, 248, 0.2); }

.log-text {
  font-size: 13px;
  color: var(--text2);
  line-height: 1.6;
}

.add-log-form {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 24px 32px;
}

.add-log-form textarea {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 14px;
  resize: none;
  outline: none;
  margin-bottom: 12px;
  transition: border-color 0.2s;
  line-height: 1.6;
}

.add-log-form textarea:focus { border-color: var(--accent); }
.add-log-form textarea::placeholder { color: var(--text3); }

.form-row {
  display: flex;
  gap: 12px;
  align-items: center;
}

.form-select {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  color: var(--text2);
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  outline: none;
  cursor: pointer;
  transition: border-color 0.2s;
}

.form-select:focus { border-color: var(--accent); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #5a3fe0);
  color: white;
  border: none;
  border-radius: 10px;
  padding: 10px 24px;
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.04em;
  box-shadow: 0 4px 16px rgba(124, 92, 252, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(124, 92, 252, 0.4);
}

.btn-primary:active { transform: translateY(0); }

/* ─── 详情页 ─── */
#page-detail { padding-bottom: 80px; }

.detail-hero {
  padding: 48px 40px 40px;
  max-width: 1200px;
  margin: 0 auto;
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text3);
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px 0;
  margin-bottom: 24px;
  transition: color 0.2s;
  font-family: 'DM Sans', sans-serif;
}

.back-btn:hover { color: var(--accent2); }

.detail-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent3);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.detail-hero h2 {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.detail-meta {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.detail-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text2);
}

.detail-meta-item svg { width: 16px; height: 16px; color: var(--text3); }

/* ─── 通用布局工具 ─── */
.section-container {
  max-width: 1200px;
  margin: 0 auto 24px;
  padding: 0 40px;
}

.spacer { height: 16px; }

/* ─── 成员工作卡片 ─── */
.member-work-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.member-work-grid .full-width {
  grid-column: 1 / -1;
}

.member-work-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 24px 28px;
  transition: border-color 0.3s;
}

.member-work-card:hover { border-color: var(--border2); }

.mwc-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.mwc-avatar {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 18px;
  color: white;
  flex-shrink: 0;
}

.mwc-info { flex: 1; }

.mwc-name {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 2px;
}

.mwc-role {
  font-size: 12px;
  color: var(--text3);
}

.mwc-saved-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--green);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 3px 10px;
  border-radius: 20px;
  opacity: 0;
  transition: opacity 0.3s;
}

.mwc-saved-badge.show { opacity: 1; }

.mwc-textarea {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  font-size: 13px;
  line-height: 1.7;
  resize: vertical;
  min-height: 120px;
  outline: none;
  transition: border-color 0.2s;
}

.mwc-textarea:focus { border-color: var(--accent); }
.mwc-textarea::placeholder { color: var(--text3); }

.mwc-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
}

.mwc-last-edit {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text3);
}

.btn-save {
  background: linear-gradient(135deg, var(--accent), #5a3fe0);
  color: white;
  border: none;
  border-radius: 10px;
  padding: 8px 20px;
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 4px 12px rgba(124, 92, 252, 0.25);
  letter-spacing: 0.04em;
}

.btn-save:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(124, 92, 252, 0.4); }

/* ─── 导师视图 ─── */
.supervisor-panel {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 8px 28px;
}

.sv-member-row {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}

.sv-member-row:last-child { border-bottom: none; padding-bottom: 0; }

.sv-avatar {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 16px;
  color: white;
  flex-shrink: 0;
}

.sv-name {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 2px;
}

.sv-role { font-size: 11px; color: var(--text3); margin-bottom: 8px; }

.sv-content {
  font-size: 13px;
  color: var(--text2);
  line-height: 1.7;
  flex: 1;
}

.sv-empty {
  color: var(--text3);
  font-style: italic;
  font-size: 13px;
}

.view-hint {
  font-size: 13px;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.06em;
}

.view-hint-student { color: var(--text3); }
.view-hint-supervisor { color: var(--gold); }

/* ─── 响应式 ─── */
@media (max-width: 768px) {
  nav { padding: 0 20px; }
  .hero { padding: 48px 20px 32px; }
  .timeline-container { padding: 0 20px 60px; }
  .timeline-track { left: calc(20px + 32px); }
  .section-header { padding: 0 20px; }
  .progress-section { padding: 0 20px; }
  .team-section { padding: 0 20px; }
  .alignment-section { padding: 0 20px; }
  .team-grid { grid-template-columns: repeat(3, 1fr); }
  .member-work-grid { padding: 0 20px; grid-template-columns: 1fr; }
  .detail-hero { padding: 32px 20px; }
  .stats-row { flex-wrap: wrap; }
  .section-container { padding: 0 20px; }
}

@media (max-width: 480px) {
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-right { gap: 8px; }
  .role-badge { display: none; }
}