:root {
  --bg: #f7f8fb;
  --text: #0b1020;
  --muted: #667085;
  --soft: #eef2ff;
  --card: rgba(255, 255, 255, 0.78);
  --card-strong: rgba(255, 255, 255, 0.94);
  --line: rgba(15, 23, 42, 0.1);
  --accent: #315df6;
  --accent-2: #8b5cf6;
  --accent-3: #06b6d4;
  --shadow: 0 28px 90px rgba(15, 23, 42, 0.1);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(
      circle at 12% 8%,
      rgba(49, 93, 246, 0.18),
      transparent 31rem
    ),
    radial-gradient(
      circle at 88% 0%,
      rgba(139, 92, 246, 0.16),
      transparent 29rem
    ),
    radial-gradient(
      circle at 52% 100%,
      rgba(6, 182, 212, 0.1),
      transparent 26rem
    ),
    var(--bg);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-shell {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  padding: 24px 0 18px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.62);
  backdrop-filter: blur(18px);
  box-shadow: 0 12px 48px rgba(15, 23, 42, 0.06);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding-left: 4px;
  font-weight: 780;
  letter-spacing: -0.04em;
  font-size: 18px;
  text-decoration: none;
}

.logo-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(
    135deg,
    var(--accent),
    var(--accent-2) 58%,
    var(--accent-3)
  );
  box-shadow: 0 10px 24px rgba(49, 93, 246, 0.24);
  font-size: 15px;
  letter-spacing: -0.06em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav-links a {
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
}

.nav-links a:hover {
  text-decoration: none;
  background: rgba(49, 93, 246, 0.08);
  color: var(--text);
}

main {
  padding: 30px 0 34px;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(32px, 7vw, 72px);
  border: 1px solid var(--line);
  border-radius: 34px;
  background: linear-gradient(135deg, rgb(0 0 0 / 88%), rgb(0 22 114 / 58%));
  backdrop-filter: blur(22px);
  box-shadow: var(--shadow);
}

.hero::after {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  right: -90px;
  top: -90px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    rgba(49, 93, 246, 0.18),
    rgba(139, 92, 246, 0.1)
  );
  pointer-events: none;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.74);
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

.kicker::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.045em;
  line-height: 1.04;
}

h1 {
  max-width: 850px;
  margin-top: 22px;
  font-size: clamp(44px, 8.4vw, 88px);
}

h2 {
  font-size: clamp(26px, 4vw, 42px);
}

h3 {
  font-size: 18px;
  letter-spacing: -0.025em;
}

.lead {
  max-width: 720px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: clamp(18px, 2.2vw, 22px);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--text);
  color: #fff;
  font-weight: 750;
  font-size: 14px;
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.18);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.76);
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: none;
}

.button:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.card,
.panel {
  border: 1px solid var(--line);
  border-radius: 26px;
  background: var(--card);
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 58px rgba(15, 23, 42, 0.07);
}

.card {
  padding: 24px;
}

.card p,
.panel p,
.fine,
li {
  color: var(--muted);
  font-size: 15px;
}

.card p {
  margin: 8px 0 0;
}

.section {
  margin-top: 18px;
}

.panel {
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(26px, 5vw, 44px);
  background: var(--card-strong);
}

.panel p {
  margin: 14px 0 0;
}

.stack {
  display: grid;
  gap: 18px;
  margin-top: 26px;
}

.notice {
  padding: 16px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(49, 93, 246, 0.06);
  color: var(--muted);
  font-size: 14px;
}

form {
  margin-top: 24px;
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 13px 14px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--text);
  font: inherit;
  outline: none;
}

input:focus,
textarea:focus {
  border-color: rgba(49, 93, 246, 0.55);
  box-shadow: 0 0 0 4px rgba(49, 93, 246, 0.1);
}

button {
  border: 0;
  cursor: pointer;
  font: inherit;
}

.site-footer {
  padding: 10px 0 34px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 4px;
  color: var(--muted);
  font-size: 14px;
}

.footer-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.footer-links a {
  font-weight: 650;
}

@media (max-width: 740px) {
  .page-shell {
    width: min(100% - 24px, 1080px);
  }
  .nav,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
  .nav-links {
    justify-content: flex-start;
  }
  .hero {
    border-radius: 28px;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  main {
    padding-top: 18px;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #030711;
    --text: #f8fafc;
    --muted: #a2adc2;
    --card: rgba(15, 23, 42, 0.72);
    --card-strong: rgba(15, 23, 42, 0.9);
    --line: rgba(255, 255, 255, 0.12);
    --shadow: 0 28px 90px rgba(0, 0, 0, 0.34);
    color-scheme: dark;
  }
  .nav,
  .kicker,
  .button.secondary,
  input,
  textarea {
    background: rgba(15, 23, 42, 0.64);
  }
  .button {
    background: #fff;
    color: #0b1020;
  }
}

.admin-panel {
  max-width: 1040px;
}

.admin-form {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
}

.admin-results {
  display: grid;
  gap: 14px;
  margin-top: 20px;
}

.email-row,
.empty-state {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.72);
  padding: 18px;
}

.email-head {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: flex-start;
}

.email-head strong,
.email-head span {
  display: block;
}

.email-head span {
  color: var(--muted);
  font-size: 14px;
  margin-top: 3px;
}

.pill {
  flex: 0 0 auto;
  border-radius: 999px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  background: rgba(255, 255, 255, 0.72);
}

.pill.success {
  color: #047857;
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.22);
}

.email-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 16px 0;
}

.email-meta div {
  min-width: 0;
  padding: 10px;
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.6);
}

.email-meta dt {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.email-meta dd {
  margin: 4px 0 0;
  overflow-wrap: anywhere;
  font-size: 14px;
}

details {
  margin-top: 10px;
}

summary {
  cursor: pointer;
  color: var(--text);
  font-weight: 800;
}

.mail-content {
  max-height: 260px;
  overflow: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  margin: 10px 0 0;
  padding: 14px;
  border-radius: 16px;
  background: rgba(15, 23, 42, 0.06);
  color: var(--text);
  font-size: 12px;
  line-height: 1.5;
}

.error-content {
  color: #b91c1c;
}

.notice.error {
  border-color: rgba(239, 68, 68, 0.22);
  background: rgba(239, 68, 68, 0.08);
  color: #b91c1c;
}

@media (max-width: 740px) {
  .admin-form,
  .email-meta {
    grid-template-columns: 1fr;
  }
  .email-head {
    flex-direction: column;
  }
}

@media (prefers-color-scheme: dark) {
  .email-row,
  .empty-state,
  .email-meta div,
  .pill {
    background: rgba(15, 23, 42, 0.64);
  }
  .mail-content {
    background: rgba(255, 255, 255, 0.06);
  }
  .pill.success {
    color: #6ee7b7;
  }
}


.unsubscribe-box {
  margin-top: 24px;
  display: grid;
  gap: 14px;
}

.hp-field {
  position: absolute !important;
  left: -10000px !important;
  width: 1px !important;
  height: 1px !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

.slide-submit {
  position: relative;
  overflow: hidden;
  height: 56px;
  margin-top: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.06);
  user-select: none;
  touch-action: none;
  cursor: grab;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.slide-submit:active {
  cursor: grabbing;
}

.slide-progress {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  opacity: 0.18;
  transition: width 0.12s ease;
}

.slide-label {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: -0.01em;
  pointer-events: none;
}

.slide-handle {
  position: absolute;
  left: 0;
  top: 4px;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--text), #334155);
  color: #fff;
  font-weight: 900;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.22);
  transform: translateX(4px);
  transition: transform 0.12s ease;
  will-change: transform;
  pointer-events: none;
}

.slide-submit.is-sending {
  opacity: 0.78;
  cursor: wait;
}

.slide-submit.is-complete {
  background: rgba(16, 185, 129, 0.12);
  border-color: rgba(16, 185, 129, 0.28);
  cursor: default;
}

.slide-submit.is-complete .slide-progress {
  width: 100% !important;
  background: rgba(16, 185, 129, 0.18);
  opacity: 1;
}

.slide-submit.is-complete .slide-handle {
  background: #059669;
}

.form-message {
  min-height: 22px;
  margin: 2px 0 0;
  font-size: 14px;
  color: var(--muted);
}

.form-message.success {
  color: #047857;
  font-weight: 750;
}

.form-message.error {
  color: #b91c1c;
  font-weight: 750;
}

@media (prefers-color-scheme: dark) {
  .slide-submit {
    background: rgba(255, 255, 255, 0.07);
  }
  .slide-handle {
    background: linear-gradient(135deg, #f8fafc, #cbd5e1);
    color: #0b1020;
  }
  .form-message.success {
    color: #6ee7b7;
  }
}

.admin-dashboard {
  margin-top: 22px;
}

.tabs {
  display: inline-flex;
  gap: 8px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.66);
  margin: 14px 0 22px;
}

.tab-button {
  min-height: 38px;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--muted);
  background: transparent;
  font-weight: 800;
  font-size: 13px;
}

.tab-button.active {
  color: #fff;
  background: var(--text);
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.16);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.section-head h2,
.secret-form h3,
.secret-help h3 {
  margin: 0;
}

.secret-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 16px;
  margin-top: 16px;
}

.secret-form,
.secret-help,
.link-output {
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.72);
}

.form-row,
.secret-actions,
.copy-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  align-items: end;
}

.copy-row {
  grid-template-columns: minmax(0, 1fr) auto;
  margin-top: 12px;
}

.secret-actions {
  grid-template-columns: minmax(90px, 0.5fr) minmax(120px, 0.5fr) auto auto;
  margin-top: 16px;
}

.secret-row .mail-content {
  max-height: 180px;
}

.access-log {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.access-row {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.58);
  color: var(--muted);
  font-size: 13px;
  overflow-wrap: anywhere;
}

.access-row strong {
  color: var(--text);
}

@media (max-width: 860px) {
  .secret-grid,
  .section-head,
  .form-row,
  .secret-actions,
  .copy-row {
    grid-template-columns: 1fr;
  }
  .section-head {
    display: grid;
  }
  .tabs {
    display: grid;
    border-radius: 22px;
  }
}

@media (prefers-color-scheme: dark) {
  .tabs,
  .secret-form,
  .secret-help,
  .link-output,
  .access-row {
    background: rgba(15, 23, 42, 0.64);
  }
  .tab-button.active {
    background: #fff;
    color: #0b1020;
  }
}