/* ═══════════════════════════════════════
   Jetson Platform v9 — Client Stylesheet
   3步流程界面设计
   ═══════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600&family=Noto+Sans+SC:wght@300;400;500;600;700&display=swap');

:root {
  --bg-primary:    linear-gradient(135deg, #1a1f3a 0%, #2d1b3d 50%, #1a1f3a 100%);
  --bg-solid:      #1a1f3a;
  --bg-card:       rgba(255, 255, 255, 0.08);
  --bg-card-hover: rgba(255, 255, 255, 0.12);
  --bg-input:      rgba(0, 0, 0, 0.3);
  --border:        rgba(255, 255, 255, 0.1);
  --border-focus:  #ff8c42;
  
  --accent:        #ff8c42;
  --accent-light:  #ffab6f;
  --accent-dim:    rgba(255, 140, 66, 0.15);
  --accent-glow:   rgba(255, 140, 66, 0.4);
  
  --secondary:     #6366f1;
  --secondary-dim: rgba(99, 102, 241, 0.15);
  
  --text-primary:  #ffffff;
  --text-secondary:#cbd5e1;
  --text-muted:    #94a3b8;
  
  --danger:        #ef4444;
  --success:       #10b981;
  --warning:       #f59e0b;
  
  --radius:        12px;
  --font-body:     'Noto Sans SC', system-ui, sans-serif;
  --font-mono:     'JetBrains Mono', 'Menlo', monospace;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

html { font-size:16px; }

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: '';
  position: fixed; inset:0; z-index:0; pointer-events:none;
  background: 
    radial-gradient(circle at 20% 20%, rgba(255, 140, 66, 0.1), transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(99, 102, 241, 0.1), transparent 40%);
}

body::after {
  content: '';
  position: fixed; inset:0; z-index:0; pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
  background-size: 50px 50px;
}

[v-cloak] { display:none !important; }

.page-wrapper {
  position:relative; z-index:1;
  max-width:700px;
  margin:0 auto;
  padding:60px 24px 80px;
}

/* ── Brand ── */
.brand {
  text-align:center;
  margin-bottom:48px;
  animation: fadeInDown 0.6s ease;
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

.brand-logo {
  display:inline-flex;
  align-items:center; gap:12px;
  font-size:32px; font-weight:700;
  letter-spacing:-0.5px;
  color:var(--text-primary);
  text-shadow: 0 2px 20px rgba(255, 140, 66, 0.3);
}

.brand-logo .dot {
  display:inline-block;
  width:12px; height:12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-radius:50%;
  box-shadow:0 0 20px var(--accent-glow);
  animation:pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity:1; transform:scale(1); box-shadow:0 0 20px var(--accent-glow); }
  50% { opacity:.7; transform:scale(1.2); box-shadow:0 0 30px var(--accent-glow); }
}

.brand-sub {
  margin-top:10px;
  font-size:14px;
  color:var(--text-muted);
  letter-spacing:2px;
  text-transform:uppercase;
  font-weight:300;
}

/* ── Card ── */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  transition: all .3s ease;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  animation: fadeInUp 0.6s ease;
  margin-bottom:24px;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.card:hover {
  border-color:var(--accent-dim);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--accent-dim);
  transform: translateY(-2px);
}

.card-header {
  padding:24px 28px;
  border-bottom:1px solid var(--border);
  font-weight:600;
  font-size:16px;
  color:var(--text-primary);
  background: rgba(0, 0, 0, 0.2);
}

.card-body {
  padding:28px;
}

/* ── Steps ── */
.steps {
  display:flex;
  padding:32px 28px;
  background: rgba(0, 0, 0, 0.2);
  border-bottom:1px solid var(--border);
  gap: 20px;
}

.step-item {
  flex:1;
  text-align:center;
  position:relative;
}

.step-item:not(:last-child)::after {
  content:'';
  position:absolute;
  top:20px; left:calc(50% + 18px); width:calc(100% - 36px);
  height:3px;
  background:var(--border);
  border-radius:2px;
  z-index:0;
}

.step-item.done:not(:last-child)::after,
.step-item.active:not(:last-child)::after {
  background: linear-gradient(90deg, var(--accent), var(--secondary));
}

.step-num {
  display:inline-flex;
  align-items:center; justify-content:center;
  width:40px; height:40px;
  border-radius:50%;
  background:var(--border);
  color:var(--text-muted);
  font-size:16px; font-weight:700;
  position:relative; z-index:1;
  transition:all .4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 2px solid transparent;
}

.step-item.active .step-num {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color:#000;
  box-shadow:0 4px 20px var(--accent-glow);
  border-color: var(--accent-light);
  transform: scale(1.1);
}

.step-item.done .step-num {
  background: linear-gradient(135deg, var(--success), #14b8a6);
  color:#fff;
  border-color: var(--success);
}

.step-label {
  margin-top:12px;
  font-size:13px;
  color:var(--text-muted);
  font-weight:500;
  transition: all 0.3s;
}

.step-item.active .step-label {
  color:var(--accent);
  font-weight:600;
}

/* ── Forms ── */
.form-group {
  margin-bottom:24px;
}

.form-label {
  display:block;
  margin-bottom:8px;
  font-size:14px;
  font-weight:600;
  color:var(--text-secondary);
}

.form-input, .form-select {
  width:100%;
  padding:14px 18px;
  background:var(--bg-input);
  border:2px solid var(--border);
  border-radius:10px;
  color:var(--text-primary);
  font-size:15px;
  outline:none;
  transition:all .3s ease;
}

.form-input {
  font-family:var(--font-mono);
  letter-spacing:2px;
}

.form-select {
  font-family:var(--font-body);
  cursor:pointer;
}

.form-input::placeholder {
  color:var(--text-muted);
  letter-spacing:0;
  font-family:var(--font-body);
}

.form-input:focus, .form-select:focus {
  border-color:var(--accent);
  box-shadow:0 0 0 4px var(--accent-dim);
  background: rgba(0, 0, 0, 0.4);
}

/* ── Buttons ── */
.btn {
  display:inline-flex;
  align-items:center; justify-content:center; gap:10px;
  padding:14px 32px;
  border:none; border-radius:10px;
  font-family:var(--font-body);
  font-size:15px; font-weight:600;
  cursor:pointer;
  transition:all .3s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration:none;
  position: relative;
  overflow: hidden;
}

.btn:disabled {
  opacity:.5; cursor:not-allowed;
  transform: none !important;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color:#000;
  font-weight:700;
  box-shadow: 0 4px 15px var(--accent-dim);
}

.btn-primary:hover:not(:disabled) {
  box-shadow:0 6px 25px var(--accent-glow);
  transform:translateY(-2px);
}

.btn-block { width:100%; }

.btn-outline {
  background:transparent;
  border:2px solid var(--border);
  color:var(--text-secondary);
}

.btn-outline:hover:not(:disabled) {
  border-color:var(--accent);
  color:var(--text-primary);
  background: var(--accent-dim);
}

/* ── Download Hero ── */
.download-hero {
  text-align:center;
  padding:48px 32px;
  background:
    radial-gradient(ellipse at 50% 0%, var(--accent-dim), transparent 70%),
    radial-gradient(ellipse at 50% 100%, var(--secondary-dim), transparent 70%),
    var(--bg-card);
  border-radius:var(--radius);
  border:1px solid var(--border);
  margin-top:24px;
  backdrop-filter: blur(20px);
}

.download-hero h3 {
  font-size:24px;
  margin-bottom:10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.download-hero .meta {
  font-size:13px;
  color:var(--text-muted);
  margin-bottom:32px;
  line-height:1.8;
}

.btn-download {
  background: linear-gradient(135deg, var(--accent), var(--secondary));
  color:#fff;
  font-size:18px;
  padding:20px 56px;
  box-shadow: 0 6px 30px rgba(99, 102, 241, 0.3);
}

.btn-download:hover:not(:disabled) {
  box-shadow:0 8px 40px rgba(255, 140, 66, 0.4), 0 8px 40px rgba(99, 102, 241, 0.3);
  transform:translateY(-3px);
}

/* ── Notice ── */
.notice {
  padding:16px 20px;
  border-radius:10px;
  font-size:14px;
  line-height:1.7;
  margin-bottom:24px;
  border-left: 4px solid;
  backdrop-filter: blur(10px);
}

.notice-info {
  background:rgba(59,130,246,.12);
  border-color:rgba(59,130,246,.5);
  color:#93c5fd;
}

.notice-warn {
  background:rgba(245,158,11,.12);
  border-color:rgba(245,158,11,.5);
  color:#fcd34d;
}

/* ── PDF Viewer ── */
.pdf-viewer {
  width:100%;
  height:600px;
  border:1px solid var(--border);
  border-radius:10px;
  overflow:hidden;
}

/* ── Toast ── */
.toast-container {
  position:fixed; top:24px; right:24px; z-index:9999;
  display:flex; flex-direction:column; gap:10px;
}

.toast {
  padding:14px 24px;
  border-radius:10px;
  font-size:14px;
  color:#fff;
  font-weight:500;
  animation:slideIn .4s cubic-bezier(0.4, 0, 0.2, 1);
  max-width:360px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
}

.toast-success { background:linear-gradient(135deg, rgba(16,185,129,.95), rgba(5,150,105,.95)); }
.toast-error { background:linear-gradient(135deg, rgba(239,68,68,.95), rgba(220,38,38,.95)); }
.toast-info { background:linear-gradient(135deg, rgba(59,130,246,.95), rgba(37,99,235,.95)); }

@keyframes slideIn {
  from { transform:translateX(400px); opacity:0; }
  to   { transform:translateX(0); opacity:1; }
}

/* ── Spinner ── */
.spinner {
  display:inline-block;
  width:20px; height:20px;
  border:3px solid rgba(0,0,0,.3);
  border-top-color:#000;
  border-radius:50%;
  animation:spin .7s linear infinite;
}

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

/* ── Footer ── */
.footer {
  text-align:center;
  margin-top:60px;
  padding:24px;
  font-size:13px;
  color:var(--text-muted);
}

/* ── 🆕 确认完成区域 ── */
.completion-section {
  padding: 8px 0;
}

.btn-success {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: white;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
  transition: all 0.3s ease;
}

.btn-success:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-success:active:not(:disabled) {
  transform: translateY(0);
}

.btn-success:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ── Responsive ── */
@media (max-width:640px) {
  .page-wrapper { padding:40px 16px 60px; }
  .brand-logo { font-size:26px; }
  .card-body { padding:20px; }
  .btn-download { padding:16px 40px; font-size:16px; }
  .steps { padding:24px 20px; }
}