:root {
  color-scheme: light;
  --bg-color: #f5f5f7;
  --surface: #ffffff;
  --text-main: #1d1d1f;
  --text-muted: #86868b;
  --border-color: #d2d2d7;
  --primary: #000000;
  --primary-hover: #333333;
  --danger-bg: #fef2f2;
  --danger: #ef4444;
}

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

body {
  min-height: 100vh;
  background: var(--bg-color);
  color: var(--text-main);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding: 20px;
}

a {
  color: var(--text-main);
  word-break: break-all;
}

.container {
  width: min(100%, 560px);
  margin: 0 auto;
  padding: 18px 0 42px;
}

header {
  text-align: center;
  margin-bottom: 24px;
}

header h1 {
  margin-bottom: 8px;
  color: var(--text-main);
  font-size: 28px;
  font-weight: 650;
  letter-spacing: 0;
}

header p {
  color: var(--text-muted);
  font-size: 15px;
}

.section {
  background: var(--surface);
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: 8px;
  padding: 28px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
}

.hidden {
  display: none !important;
}

h2 {
  margin-bottom: 8px;
  color: var(--text-main);
  font-size: 21px;
  font-weight: 650;
  letter-spacing: 0;
}

.section > p {
  margin-bottom: 24px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.45;
}

form {
  display: block;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.form-group {
  margin-bottom: 18px;
}

label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-main);
  font-size: 14px;
  font-weight: 550;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 13px 15px;
  background: var(--surface);
  color: var(--text-main);
  font: inherit;
  font-size: 15px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  appearance: none;
}

select {
  padding-right: 36px;
  background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%231d1d1f%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
  background-repeat: no-repeat;
  background-position: right 16px top 50%;
  background-size: 10px auto;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.05);
}

textarea {
  min-height: 94px;
  resize: vertical;
  line-height: 1.45;
}

details {
  margin: 4px 0 18px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 14px 16px 0;
  background: #fbfbfd;
}

details[open] {
  padding-bottom: 2px;
}

summary {
  margin-bottom: 14px;
  cursor: pointer;
  color: var(--text-main);
  font-size: 14px;
  font-weight: 650;
}

.file-help {
  margin-bottom: 8px;
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.4;
}

.file-upload-wrapper {
  position: relative;
  overflow: hidden;
  width: 100%;
}

.file-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.file-label {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 48px;
  margin: 0;
  border: 1px dashed var(--border-color);
  border-radius: 8px;
  padding: 13px 15px;
  color: var(--text-muted);
  text-align: center;
  cursor: pointer;
}

.primary-btn,
.secondary-btn {
  width: 100%;
  border: 0;
  border-radius: 8px;
  padding: 14px 20px;
  font: inherit;
  font-size: 16px;
  font-weight: 550;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease, opacity 0.2s ease;
}

.primary-btn {
  background: var(--primary);
  color: #fff;
}

.primary-btn:hover {
  background: var(--primary-hover);
}

.secondary-btn {
  border: 1px solid var(--border-color);
  background: var(--surface);
  color: var(--text-main);
}

.primary-btn:active,
.secondary-btn:active {
  transform: scale(0.98);
}

.primary-btn:disabled,
.secondary-btn:disabled {
  cursor: wait;
  opacity: 0.7;
}

.message {
  margin-top: 14px;
  border-radius: 8px;
  padding: 14px;
  font-size: 14px;
  font-weight: 550;
  text-align: center;
}

.message.error {
  border: 1px solid #fca5a5;
  background: var(--danger-bg);
  color: var(--danger);
}

.qr-placeholder {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 220px;
  height: 220px;
  margin: 0 auto 24px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-color);
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.5;
  text-align: center;
  overflow: hidden;
}

.qr-placeholder img {
  width: 190px;
  height: 190px;
  object-fit: contain;
}

.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 14px;
}

.status-label {
  color: var(--text-muted);
  font-size: 14px;
}

.status {
  display: inline-flex;
  align-items: center;
  border-radius: 6px;
  padding: 4px 10px;
  background: var(--bg-color);
  color: var(--text-main);
  font-size: 13px;
  font-weight: 550;
}

.status::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 6px;
  border-radius: 50%;
  background: var(--text-main);
}

.meta-list {
  display: grid;
  gap: 12px;
  margin: 0 0 18px;
}

.meta-list div {
  min-width: 0;
}

dt {
  margin-bottom: 4px;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 650;
}

dd {
  min-width: 0;
  color: var(--text-main);
  font-size: 14px;
  word-break: break-all;
}

.qr-text,
.login-command {
  display: block;
  width: 100%;
  max-height: 260px;
  margin: 14px 0 0;
  overflow: auto;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px;
  background: #111;
  color: #f5f5f7;
  font: 12px/1.35 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre-wrap;
  word-break: break-word;
}

.qr-text:empty,
.login-command:empty {
  display: none;
}

.button-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 18px;
}

.success-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  animation: slideUpFade 0.45s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.success-animation {
  width: 64px;
  height: 64px;
  margin-bottom: 18px;
}

.checkmark {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  stroke: var(--text-main);
  stroke-width: 3;
  stroke-miterlimit: 10;
}

.checkmark__circle {
  fill: none;
  stroke: var(--text-main);
  stroke-dasharray: 166;
  stroke-dashoffset: 166;
  animation: stroke 0.55s cubic-bezier(0.65, 0, 0.45, 1) forwards;
}

.checkmark__check {
  transform-origin: 50% 50%;
  stroke-dasharray: 48;
  stroke-dashoffset: 48;
  animation: stroke 0.3s cubic-bezier(0.65, 0, 0.45, 1) 0.45s forwards;
}

.hero-text {
  margin-bottom: 22px !important;
  color: var(--text-muted);
  font-size: 16px;
}

.highlight-name {
  color: var(--text-main);
  font-weight: 650;
}

.divider {
  width: 40px;
  height: 2px;
  margin: 0 auto 22px;
  border-radius: 2px;
  background: var(--text-main);
  opacity: 0.1;
}

.instruction {
  margin-bottom: 0 !important;
  color: var(--text-muted);
  font-size: 15px !important;
}

@keyframes stroke {
  100% {
    stroke-dashoffset: 0;
  }
}

@keyframes slideUpFade {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 560px) {
  body {
    padding: 14px;
  }

  .container {
    padding-top: 10px;
  }

  .section {
    padding: 22px;
  }

  .form-row,
  .button-row {
    grid-template-columns: 1fr;
  }
}