/* ================================================================
   DNS 优选 - Dns Preference
   CSS 样式表
   ================================================================ */

/* ========== CSS Variables ========== */
:root {
  --bg-primary: #06080d;
  --bg-secondary: #0d1117;
  --bg-card: #131820;
  --bg-card-hover: #1a2235;
  --bg-table: #0f1520;
  --bg-table-alt: #111827;
  --bg-input: #0d1117;
  --border: #1e2a3a;
  --border-accent: #2a3a55;

  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #545d68;

  --accent-cyan: #00d4ff;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-green: #22c55e;
  --accent-yellow: #eab308;
  --accent-orange: #f97316;
  --accent-red: #ef4444;
  --accent-gold: #f59e0b;

  --gradient-cyan: linear-gradient(135deg, #00d4ff 0%, #0098f0 100%);
  --gradient-purple: linear-gradient(135deg, #8b5cf6 0%, #3b82f6 100%);
  --gradient-gold: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
  --gradient-card: linear-gradient(180deg, rgba(0,212,255,0.06) 0%, rgba(59,130,246,0.02) 100%);

  --shadow-glow-cyan: 0 0 30px rgba(0,212,255,0.15), 0 0 60px rgba(0,212,255,0.05);
  --shadow-glow-gold: 0 0 40px rgba(245,158,11,0.2), 0 0 80px rgba(245,158,11,0.08);
  --shadow-card: 0 2px 12px rgba(0,0,0,0.3);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
}

/* ========== Reset & Base ========== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(0,212,255,0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(139,92,246,0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(59,130,246,0.02) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* ========== Header ========== */
.header {
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  background: rgba(13,17,23,0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-logo {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: var(--gradient-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
  box-shadow: var(--shadow-glow-cyan);
}

.header-logo svg {
  width: 24px;
  height: 24px;
  fill: #fff;
}

.header-title h1 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.header-title span {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 400;
  letter-spacing: 1px;
  text-transform: uppercase;
  display: block;
}

.header-meta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.badge {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: rgba(255,255,255,0.03);
  display: flex;
  align-items: center;
  gap: 6px;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px rgba(34,197,94,0.5);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

/* ========== Control Panel ========== */
.control-panel {
  margin: 32px 0 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.btn-start {
  position: relative;
  padding: 16px 48px;
  font-size: 17px;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-cyan);
  border: none;
  border-radius: 50px;
  cursor: pointer;
  letter-spacing: 1px;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 24px rgba(0,212,255,0.25), 0 0 50px rgba(0,212,255,0.1);
  overflow: hidden;
}

.btn-start::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left 0.6s ease;
}

.btn-start:hover::before {
  left: 100%;
}

.btn-start:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 32px rgba(0,212,255,0.35), 0 0 70px rgba(0,212,255,0.15);
}

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

.btn-start:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-start.running {
  background: linear-gradient(135deg, #ef4444 0%, #f97316 100%);
  box-shadow: 0 4px 24px rgba(239,68,68,0.25);
  animation: btn-pulse 1.5s ease-in-out infinite;
}

@keyframes btn-pulse {
  0%, 100% { box-shadow: 0 4px 24px rgba(239,68,68,0.25); }
  50% { box-shadow: 0 4px 40px rgba(239,68,68,0.45); }
}

.control-info {
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

.control-info span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.control-info .divider {
  width: 1px;
  height: 12px;
  background: var(--border);
}

.control-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.btn-secondary {
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  background: rgba(0,212,255,0.05);
}

.btn-secondary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ========== Progress Bar ========== */
.progress-wrapper {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
}

.progress-bar-outer {
  width: 100%;
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 10px;
  overflow: hidden;
  position: relative;
}

.progress-bar-inner {
  height: 100%;
  width: 0%;
  background: var(--gradient-cyan);
  border-radius: 10px;
  transition: width 0.4s ease;
  position: relative;
}

.progress-bar-inner::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: shimmer 1.5s ease-in-out infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.progress-text {
  text-align: center;
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 8px;
  font-variant-numeric: tabular-nums;
}

/* ========== Recommendation Panel ========== */
.recommend-section {
  margin: 32px 0;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.section-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 0;
}

.section-title::before {
  content: '';
  width: 3px;
  height: 16px;
  background: var(--gradient-cyan);
  border-radius: 2px;
}

.config-stepper {
  display: flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.stepper-label {
  font-size: 12px;
  color: var(--text-secondary);
  padding: 0 10px;
  white-space: nowrap;
  border-right: 1px solid var(--border);
  height: 32px;
  display: flex;
  align-items: center;
}

.stepper-btn {
  width: 32px;
  height: 32px;
  border: none;
  background: rgba(255,255,255,0.03);
  color: var(--text-secondary);
  font-size: 16px;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stepper-btn:hover {
  background: rgba(0,212,255,0.1);
  color: var(--accent-cyan);
}

.stepper-btn:active {
  background: rgba(0,212,255,0.2);
}

.stepper-input {
  width: 40px;
  height: 32px;
  border: none;
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text-primary);
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  outline: none;
  -moz-appearance: textfield;
}

.stepper-input::-webkit-inner-spin-button,
.stepper-input::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.recommend-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.recommend-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
  cursor: default;
}

.recommend-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-card);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.recommend-card.has-data::before {
  opacity: 1;
}

.recommend-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-card);
}

.recommend-card.rank-1 {
  border-color: var(--accent-gold);
  box-shadow: var(--shadow-glow-gold);
}

.recommend-card.rank-1::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(245,158,11,0.3), transparent 50%, rgba(245,158,11,0.1));
  z-index: -1;
  animation: border-glow 2s ease-in-out infinite;
}

@keyframes border-glow {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

.recommend-card.rank-2 {
  border-color: rgba(139,92,246,0.3);
}

.recommend-card.rank-3 {
  border-color: rgba(0,212,255,0.3);
}

.recommend-card.rank-default {
  border-color: var(--border);
}

.card-rank-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
}

.rank-1 .card-rank-badge {
  background: var(--gradient-gold);
  box-shadow: 0 0 16px rgba(245,158,11,0.4);
}

.rank-2 .card-rank-badge {
  background: linear-gradient(135deg, #8b5cf6, #6366f1);
  box-shadow: 0 0 14px rgba(139,92,246,0.3);
}

.rank-3 .card-rank-badge {
  background: linear-gradient(135deg, #00d4ff, #3b82f6);
  box-shadow: 0 0 14px rgba(0,212,255,0.3);
}

.rank-default .card-rank-badge {
  background: rgba(255,255,255,0.08);
  color: var(--text-secondary);
  box-shadow: none;
}

.card-empty .card-rank-badge {
  background: var(--bg-input);
  color: var(--text-muted);
  box-shadow: none;
}

.card-category {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.card-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.card-latency {
  font-size: 36px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  margin: 8px 0;
}

.card-latency.good { color: var(--accent-green); }
.card-latency.decent { color: var(--accent-blue); }
.card-latency.slow { color: var(--accent-orange); }
.card-latency.bad { color: var(--accent-red); }
.card-latency.none { color: var(--text-muted); font-size: 20px; }

.card-latency-unit {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
}

.card-desc {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.card-hostname {
  font-size: 11px;
  color: var(--text-muted);
  font-family: 'SF Mono', 'Consolas', monospace;
  word-break: break-all;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

/* ========== IP List & Copy Button ========== */
.card-ip-section {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.ip-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.ip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.ip-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 12px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  font-size: 11px;
  font-family: 'SF Mono', 'Consolas', monospace;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.ip-tag.ipv6-tag {
  font-size: 10px;
  letter-spacing: -0.3px;
}

.btn-copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 4px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 11px;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  line-height: 1;
}

.btn-copy:hover {
  background: rgba(0,212,255,0.1);
  border-color: rgba(0,212,255,0.3);
  color: var(--accent-cyan);
}

.btn-copy.copied {
  background: rgba(34,197,94,0.15);
  border-color: rgba(34,197,94,0.4);
  color: var(--accent-green);
}

/* Table-specific IP styles */
.td-ip {
  max-width: 260px;
}

.td-ip .ip-list {
  flex-direction: column;
  gap: 3px;
  align-items: flex-start;
}

.td-ip .ip-sub-group {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.td-ip .ip-sub-label {
  font-size: 10px;
  color: var(--text-muted);
  white-space: nowrap;
  margin-right: 2px;
}

.td-ip .ip-tag {
  font-size: 11px;
  padding: 1px 6px;
}

.td-ip .ip-tag.ipv6-tag {
  font-size: 9px;
}

.td-ip .ip-none {
  font-size: 11px;
  color: var(--text-muted);
  font-style: italic;
}

.card-empty {
  opacity: 0.5;
}

.card-empty .card-name {
  color: var(--text-muted);
}

/* ========== Results Table ========== */
.results-section {
  margin: 32px 0;
}

.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-table);
}

.table-wrapper::-webkit-scrollbar {
  height: 6px;
}

.table-wrapper::-webkit-scrollbar-track {
  background: transparent;
}

.table-wrapper::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 700px;
}

thead {
  position: sticky;
  top: 0;
  z-index: 5;
}

th {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 12px 16px;
  text-align: left;
  white-space: nowrap;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  user-select: none;
  transition: color var(--transition-fast);
}

th:hover {
  color: var(--accent-cyan);
}

th.sort-asc::after,
th.sort-desc::after {
  margin-left: 4px;
  font-size: 10px;
}

th.sort-asc::after { content: '▲'; }
th.sort-desc::after { content: '▼'; }

td {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(30,42,58,0.5);
  color: var(--text-primary);
}

tr {
  transition: background var(--transition-fast);
}

tr:hover td {
  background: rgba(0,212,255,0.03);
}

tr.row-rank-1 td { background: rgba(245,158,11,0.06); }
tr.row-rank-2 td { background: rgba(139,92,246,0.04); }
tr.row-rank-3 td { background: rgba(0,212,255,0.04); }

tr.row-rank-1:hover td { background: rgba(245,158,11,0.1); }
tr.row-rank-2:hover td { background: rgba(139,92,246,0.08); }
tr.row-rank-3:hover td { background: rgba(0,212,255,0.08); }

.td-rank {
  font-weight: 700;
  font-size: 14px;
  width: 60px;
}

.td-rank-rank1 { color: var(--accent-gold); }
.td-rank-rank2 { color: #8b5cf6; }
.td-rank-rank3 { color: var(--accent-cyan); }

.td-name {
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

.td-category {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  background: rgba(255,255,255,0.05);
  color: var(--text-secondary);
  white-space: nowrap;
}

.td-latency {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.latency-good { color: var(--accent-green); }
.latency-decent { color: var(--accent-blue); }
.latency-slow { color: var(--accent-orange); }
.latency-bad { color: var(--accent-red); }

.td-status {
  white-space: nowrap;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}

.status-ok {
  background: rgba(34,197,94,0.1);
  color: var(--accent-green);
  border: 1px solid rgba(34,197,94,0.2);
}

.status-warn {
  background: rgba(234,179,8,0.1);
  color: var(--accent-yellow);
  border: 1px solid rgba(234,179,8,0.2);
}

.status-fail {
  background: rgba(239,68,68,0.1);
  color: var(--accent-red);
  border: 1px solid rgba(239,68,68,0.2);
}

.status-testing {
  background: rgba(0,212,255,0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(0,212,255,0.2);
  animation: status-pulse 1s ease-in-out infinite;
}

@keyframes status-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.td-actions {
  white-space: nowrap;
}

.btn-retest {
  padding: 4px 14px;
  font-size: 12px;
  color: var(--accent-cyan);
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 14px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-retest:hover {
  background: rgba(0,212,255,0.15);
  border-color: var(--accent-cyan);
}

.btn-retest:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ========== Round Detail Expand ========== */
.round-detail-row td {
  padding: 0;
}

.round-detail-panel {
  padding: 12px 16px;
  background: rgba(0,0,0,0.2);
  border-top: 1px dashed var(--border);
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.round-chip {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-family: 'SF Mono', 'Consolas', monospace;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.round-chip.timeout {
  border-color: rgba(239,68,68,0.3);
  color: var(--accent-red);
}

/* ========== Footer ========== */
.footer {
  margin: 40px 0 32px;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-text {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.8;
}

.footer-text a {
  color: var(--accent-cyan);
  text-decoration: none;
}

.footer-text a:hover {
  text-decoration: underline;
}

/* ========== Toast ========== */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: 10px 24px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  color: #fff;
  background: var(--bg-card);
  border: 1px solid var(--accent-cyan);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  z-index: 1000;
  transition: transform var(--transition-normal);
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .recommend-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-meta {
    width: 100%;
    justify-content: flex-start;
  }

  .recommend-cards {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn-start {
    padding: 14px 36px;
    font-size: 15px;
  }

  .control-info {
    flex-direction: column;
    align-items: center;
    gap: 6px;
  }

  .control-info .divider {
    display: none;
  }

  table { min-width: 550px; }
  th, td { padding: 8px 10px; font-size: 12px; }

  .card-latency { font-size: 28px; }
}

/* ========== Empty State ========== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state svg {
  width: 64px;
  height: 64px;
  stroke: var(--text-muted);
  margin-bottom: 16px;
  opacity: 0.3;
}

.empty-state p {
  font-size: 15px;
}

/* ========== Filter Tabs ========== */
.filter-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.filter-tab {
  padding: 6px 16px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-tab:hover {
  border-color: var(--accent-cyan);
  color: var(--text-primary);
}

.filter-tab.active {
  background: rgba(0,212,255,0.1);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* ========== Search ========== */
.search-box {
  margin-bottom: 12px;
  position: relative;
}

.search-input {
  width: 100%;
  max-width: 300px;
  padding: 8px 14px 8px 36px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
  transition: border-color var(--transition-fast);
}

.search-input:focus {
  border-color: var(--accent-cyan);
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 14px;
}

/* ========== Config Section ========== */
.config-section {
  margin: 32px 0;
}

.config-body {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.btn-generate {
  padding: 10px 32px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-purple);
  border: none;
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition-normal);
  letter-spacing: 0.5px;
}

.btn-generate:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(139,92,246,0.3);
}

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

.btn-generate:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.config-downloads {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.btn-download {
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 16px;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-win {
  background: rgba(59,130,246,0.1);
  border: 1px solid rgba(59,130,246,0.3);
  color: #3b82f6;
}

.btn-win:hover {
  background: rgba(59,130,246,0.2);
  border-color: #3b82f6;
  box-shadow: 0 2px 12px rgba(59,130,246,0.2);
}

.btn-mac {
  background: rgba(139,92,246,0.1);
  border: 1px solid rgba(139,92,246,0.3);
  color: #8b5cf6;
}

.btn-mac:hover {
  background: rgba(139,92,246,0.2);
  border-color: #8b5cf6;
  box-shadow: 0 2px 12px rgba(139,92,246,0.2);
}

.btn-linux {
  background: rgba(245,158,11,0.1);
  border: 1px solid rgba(245,158,11,0.3);
  color: #f59e0b;
}

.btn-linux:hover {
  background: rgba(245,158,11,0.2);
  border-color: #f59e0b;
  box-shadow: 0 2px 12px rgba(245,158,11,0.2);
}

@media (max-width: 768px) {
  .config-body {
    padding: 20px 16px;
  }

  .config-downloads {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-download {
    justify-content: center;
  }
}

/* ========== Config Info ========== */
.config-hint {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 12px;
  justify-content: center;
}

.config-icon {
  width: 14px;
  height: 14px;
  opacity: 0.5;
}

/* ========== Animations ========== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeInUp 0.4s ease forwards;
}