:root,
html.light-theme {
  color-scheme: light;
  --bg: #f5f5f3;
  --card: rgba(255, 255, 255, 0.92);
  --surface: #f8f8f6;
  --surface-strong: #efefec;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --border: #deded9;
  --border-strong: #c8c8c2;
  --accent: #1d1d1f;
  --accent-hover: #38383c;
  --accent-contrast: #ffffff;
  --success: #2f6b4f;
  --success-soft: #e8f2ec;
  --focus: #0071e3;
  --glow: rgba(255, 255, 255, 0.7);
  --shadow: 0 18px 50px rgba(25, 25, 22, 0.07);
  --shadow-hover: 0 22px 60px rgba(25, 25, 22, 0.1);
  --glass-bg: rgba(0, 0, 0, 0.06);
  --glass-border: rgba(0, 0, 0, 0.1);
  --glass-bg-active: rgba(0, 0, 0, 0.12);
  --glass-border-active: rgba(0, 0, 0, 0.2);
}

html.dark-theme {
  color-scheme: dark;
  --bg: #0e0e0f;
  --card: rgba(29, 29, 31, 0.94);
  --surface: #252527;
  --surface-strong: #303033;
  --text: #f5f5f7;
  --text-secondary: #a1a1a6;
  --border: #3a3a3c;
  --border-strong: #515154;
  --accent: #f5f5f7;
  --accent-hover: #ffffff;
  --accent-contrast: #1d1d1f;
  --success: #72b08c;
  --success-soft: #243b2e;
  --focus: #2997ff;
  --glow: rgba(255, 255, 255, 0.04);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 24px 70px rgba(0, 0, 0, 0.4);
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-bg-active: rgba(255, 255, 255, 0.25);
  --glass-border-active: rgba(255, 255, 255, 0.5);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    radial-gradient(circle at 15% 0%, var(--glow), transparent 32%), var(--bg);
  color: var(--text);
  font-family:
    -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

button,
input,
textarea {
  font: inherit;
}

button,
a,
input,
textarea {
  transition:
    border-color 160ms ease,
    background-color 160ms ease,
    color 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease,
    opacity 160ms ease;
}

.app-header {
  width: min(1440px, calc(100% - 64px));
  margin: 0 auto;
  padding: 72px 0 30px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(34px, 5vw, 58px);
  font-weight: 650;
  letter-spacing: -0.045em;
  line-height: 1.02;
}

.app-description {
  max-width: 560px;
  margin: 14px 0 0;
  color: var(--text-secondary);
  font-size: 16px;
}

.container {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  width: min(1440px, calc(100% - 64px));
  margin: 0 auto;
  padding-bottom: 80px;
  align-items: start;
}

.subcontainer {
  min-width: 0;
  padding: 30px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.subcontainer:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-hover);
}

.card-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
}

.card-header > div {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.title-group {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.zd-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.zd-label {
  font-size: 10px;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0;
}

.zd-label::after {
  display: none;
}

.zd-input {
  max-width: 140px;
  min-height: 32px;
  padding: 6px 11px;
  font-size: 11px;
  font-weight: 600;
}

.card-header h2 {
  margin: 0;
  font-size: 28px;
  font-weight: 650;
  letter-spacing: -0.035em;
}

.card-header p {
  max-width: 230px;
  margin: 0;
  color: var(--text-secondary);
  font-size: 12px;
  text-align: right;
}

.card-index {
  color: var(--text-secondary);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.file-upload {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
  padding: 14px 16px;
  border: 1px dashed var(--border-strong);
  border-radius: 14px;
  background: var(--surface);
}

.file-upload label {
  margin: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 16px;
}

.selector-group {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 8px;
}

.selector-group:has(.website-status-header) {
  grid-column: 1 / -1;
}

.selector-group:has(#arfPreviousSuspension),
.selector-group:has(#emailContentType) {
  grid-column: 1 / -1;
}

label {
  position: relative;
  width: fit-content;
  padding-bottom: 5px;
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.25;
}

label::after {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 22px;
  height: 2px;
  border-radius: 999px;
  background: var(--text);
  content: "";
  opacity: 0.22;
}

.section-title {
  color: var(--text);
  font-size: 12px;
  font-weight: 650;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
}

input {
  min-height: 40px;
  padding: 8px 11px;
}

input[type="file"] {
  width: auto;
  max-width: 68%;
  min-height: auto;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--text-secondary);
  font-size: 12px;
}

input[type="file"]::file-selector-button {
  margin-right: 10px;
  padding: 7px 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
}

input:hover,
textarea:hover {
  border-color: var(--border-strong);
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--focus);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--focus) 16%, transparent);
}

textarea {
  min-height: 360px;
  padding: 16px;
  resize: vertical;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 12px;
  line-height: 1.65;
}

.field-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 28px;
}

.lookup-buttons,
.button-selector,
.assurance-group,
.inline-control {
  display: flex;
  align-items: center;
  gap: 7px;
  flex-wrap: wrap;
}

.inline-control {
  flex-wrap: nowrap;
}

.button-selector {
  padding: 3px;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: var(--surface);
  align-self: flex-start;
}

.selector-btn,
.selector-btn1,
.assurance,
.lookup-btn,
.website-btn {
  min-height: 32px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 11px;
  font-weight: 620;
  line-height: 1.2;
  cursor: pointer;
}

.selector-btn,
.selector-btn1 {
  padding: 7px 11px;
}

.selector-btn:hover,
.assurance:hover {
  background: var(--surface-strong);
  color: var(--text);
}

.selector-btn.active {
  background: var(--accent);
  color: var(--accent-contrast);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.14);
}

.lookup-btn,
.website-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  padding: 6px 10px;
  border-color: var(--border);
  background: var(--card);
  color: var(--text);
  white-space: nowrap;
}

.lookup-btn:hover,
.website-btn:hover {
  border-color: var(--border-strong);
  background: var(--surface-strong);
  transform: translateY(-1px);
}

.section-title {
  margin: 30px 0 12px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.output-title {
  margin-top: 28px;
}

.subject-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
}

.subject-row .inline-control input {
  min-width: 0;
}

.assurance-group {
  align-items: stretch;
}

.assurance {
  min-height: 34px;
  padding: 7px 11px;
  border-color: var(--border);
  background: var(--surface);
}

.assurance.active {
  border-color: var(--success);
  background: var(--success-soft);
  color: var(--success);
}

.website-config-section {
  margin-top: 24px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
}

.website-config-section .field-header {
  margin-bottom: 10px;
}

#websiteConfigOptions,
#arfWebsiteConfigOptions {
  margin-top: 10px;
  padding: 0 4px 4px;
}

#checkUserAgentBtn,
#toggleWebsiteConfig,
#toggleArfWebsiteConfig {
  margin: 0 6px 0 0;
  border-color: var(--border);
  background: var(--card);
}

#toggleWebsiteConfig.active,
#toggleArfWebsiteConfig.active {
  background: var(--accent);
}

.website-status-header {
  display: flex;
  flex-direction: column;
  align-items: start;
  gap: 16px;
  margin-top: 4px;
}

.website-status-header > .button-selector {
  grid-column: 1;
  grid-row: 2;
}

.website-snapshot {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  grid-column: 2;
  grid-row: 1 / span 2;
  width: 200px;
  height: 200px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 14px;
  background:
    linear-gradient(
      135deg,
      transparent 49.5%,
      var(--border) 50%,
      transparent 50.5%
    ),
    var(--surface);
  color: var(--text-secondary);
  text-align: center;
  text-decoration: none;
  font-size: 11px;
  cursor: default;
}

.website-snapshot::after {
  position: absolute;
  right: 8px;
  bottom: 8px;
  padding: 4px 7px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.68);
  color: #fff;
  content: "Preview";
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  opacity: 0;
}

.website-snapshot[href] {
  cursor: pointer;
}

.website-snapshot[href]::after {
  opacity: 1;
}

.website-snapshot:hover[href] {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.website-snapshot iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 1000px;
  height: 1000px;
  border: 0;
  pointer-events: none;
  transform: scale(0.2);
  transform-origin: top left;
}

.website-snapshot iframe[hidden],
.website-snapshot span[hidden] {
  display: none;
}

.website-snapshot span {
  max-width: 150px;
  padding: 12px;
}

#details {
  margin-top: 22px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.8;
}

#details:empty {
  display: none;
}

.read-only-value,
.file-status {
  min-height: 40px;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text-secondary);
  font-size: 12px;
}

.file-status:empty::before {
  content: "No email file loaded";
}

.blockedEmail {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

#copyBtn,
#arfCopyBtn {
  width: 100%;
  min-height: 44px;
  margin-top: 10px;
  border: 0;
  border-radius: 11px;
  background: var(--accent);
  color: var(--accent-contrast);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

#copyBtn:hover,
#arfCopyBtn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 100;
  display: grid;
  width: 42px;
  height: 42px;
  padding: 0;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--card);
  color: var(--text);
  box-shadow: var(--shadow);
  font-size: 17px;
  cursor: pointer;
  backdrop-filter: blur(12px);
}

.theme-toggle:hover {
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

@media (max-width: 1120px) {
  .container {
    grid-template-columns: 1fr;
    width: min(760px, calc(100% - 40px));
  }

  .app-header {
    width: min(760px, calc(100% - 40px));
  }
}

@media (max-width: 640px) {
  .app-header {
    width: calc(100% - 32px);
    padding: 54px 0 24px;
  }

  .container {
    width: calc(100% - 24px);
    gap: 16px;
    padding-bottom: 40px;
  }

  .subcontainer {
    padding: 22px 18px;
    border-radius: 18px;
  }

  .card-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .card-header p {
    max-width: none;
    text-align: left;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  .selector-group:has(.website-status-header) {
    grid-column: auto;
  }

  .selector-group:has(#arfPreviousSuspension),
  .selector-group:has(#emailContentType) {
    grid-column: auto;
  }

  .field-header,
  .blockedEmail {
    align-items: flex-start;
    flex-direction: column;
  }

  .website-status-header {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  .website-snapshot {
    grid-column: 1;
    grid-row: auto;
    width: 100%;
    max-width: 200px;
  }

  .website-status-header > .button-selector {
    grid-column: 1;
    grid-row: auto;
  }

  .file-upload {
    align-items: flex-start;
    flex-direction: column;
  }

  input[type="file"] {
    max-width: 100%;
  }

  .inline-control {
    align-items: stretch;
    flex-direction: column;
  }

  .theme-toggle {
    top: 12px;
    right: 12px;
  }
}