:root {
  color-scheme: light;
  --primary: #078fbe;
  --primary-bright: #08a4d5;
  --primary-soft: #e5f8fd;
  --accent: #7658e8;
  --accent-soft: #efebff;
  --background: #edf6fa;
  --background-deep: #dceff7;
  --surface: rgba(255, 255, 255, 0.88);
  --surface-solid: #ffffff;
  --surface-muted: #f5fafc;
  --text: #102438;
  --text-soft: #5e7082;
  --text-faint: #8594a3;
  --border: rgba(16, 66, 96, 0.13);
  --border-strong: rgba(8, 164, 213, 0.28);
  --shadow: 0 26px 80px rgba(18, 74, 105, 0.16);
  --shadow-soft: 0 12px 32px rgba(18, 74, 105, 0.11);
  --success: #15966d;
  --warning: #d97706;
  --danger: #d9475c;
  --focus: rgba(8, 164, 213, 0.35);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --ease: cubic-bezier(.2, .8, .2, 1);
}

[data-theme="dark"] {
  color-scheme: dark;
  --primary: #35c9ef;
  --primary-bright: #08a4d5;
  --primary-soft: rgba(8, 164, 213, 0.13);
  --accent: #a694ff;
  --accent-soft: rgba(118, 88, 232, 0.16);
  --background: #080d20;
  --background-deep: #101831;
  --surface: rgba(19, 26, 52, 0.88);
  --surface-solid: #141b35;
  --surface-muted: #10172d;
  --text: #eef7fb;
  --text-soft: #a9b8c8;
  --text-faint: #74849a;
  --border: rgba(174, 218, 239, 0.12);
  --border-strong: rgba(53, 201, 239, 0.28);
  --shadow: 0 30px 90px rgba(0, 0, 0, 0.38);
  --shadow-soft: 0 14px 38px rgba(0, 0, 0, 0.26);
  --success: #4ad5a0;
  --warning: #ffc369;
  --danger: #ff7a8d;
  --focus: rgba(53, 201, 239, 0.38);
}

[data-theme="blackhole"] {
  color-scheme: dark;
  --primary: #48d4f6;
  --primary-bright: #08a4d5;
  --primary-soft: rgba(8, 164, 213, 0.11);
  --accent: #b09cff;
  --accent-soft: rgba(122, 92, 240, 0.13);
  --background: #000000;
  --background-deep: #08090f;
  --surface: rgba(8, 10, 16, 0.94);
  --surface-solid: #090b11;
  --surface-muted: #06080d;
  --text: #f3f8fb;
  --text-soft: #9aa8b7;
  --text-faint: #667382;
  --border: rgba(255, 255, 255, 0.10);
  --border-strong: rgba(72, 212, 246, 0.26);
  --shadow: 0 30px 100px rgba(0, 0, 0, 0.8);
  --shadow-soft: 0 14px 40px rgba(0, 0, 0, 0.64);
  --success: #4ad5a0;
  --warning: #ffc369;
  --danger: #ff8292;
  --focus: rgba(72, 212, 246, 0.4);
}

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

html {
  min-width: 320px;
  background: var(--background);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 16% 0%, color-mix(in srgb, var(--primary-bright) 16%, transparent) 0, transparent 34rem),
    radial-gradient(circle at 92% 76%, color-mix(in srgb, var(--accent) 11%, transparent) 0, transparent 30rem),
    linear-gradient(145deg, var(--background), var(--background-deep));
  font-family: "Segoe UI Variable", "Segoe UI", Inter, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  transition: background .35s ease, color .25s ease;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  content: "";
  pointer-events: none;
  opacity: .35;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .55), transparent 64%);
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.ambient {
  position: fixed;
  z-index: -1;
  width: 18rem;
  height: 18rem;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(70px);
  opacity: .15;
}

.ambient-one {
  top: 9%;
  left: -8rem;
  background: var(--primary);
}

.ambient-two {
  right: -7rem;
  bottom: 2%;
  background: var(--accent);
}

.page-shell {
  width: min(100% - 32px, 1040px);
  margin: 0 auto;
  padding: 30px 0 26px;
}

.page-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.subtitle-cue {
  width: fit-content;
  max-width: 92%;
  margin: 35px auto 20px;
  text-align: center;
}

.subtitle-cue span {
  color: var(--text-faint);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: .64rem;
  letter-spacing: .08em;
}

.subtitle-cue p {
  margin: 5px 0 0;
  padding: 6px 13px 7px;
  border-radius: 8px;
  color: #fff;
  background: rgba(0, 0, 0, .72);
  box-shadow: 0 5px 18px rgba(0, 0, 0, .18);
  font-size: .86rem;
  font-weight: 650;
}

[data-theme="blackhole"] .subtitle-cue p {
  border: 1px solid rgba(255, 255, 255, .12);
  background: #050505;
}

.support-card {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(24px) saturate(120%);
}

.support-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(340px, .97fr);
  min-height: 525px;
}

.support-copy,
.support-controls {
  padding: clamp(28px, 4vw, 48px);
}

.support-copy {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-right: 1px solid var(--border);
  background:
    radial-gradient(circle at 12% 10%, color-mix(in srgb, var(--primary) 10%, transparent), transparent 43%),
    linear-gradient(145deg, color-mix(in srgb, var(--surface-solid) 38%, transparent), transparent);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--primary);
  font-size: .68rem;
  font-weight: 800;
  letter-spacing: .14em;
}

h1,
h2,
p {
  text-wrap: pretty;
}

h1,
h2 {
  margin: 0;
  letter-spacing: -.045em;
  line-height: 1.04;
}

h1 {
  max-width: 9ch;
  font-size: clamp(2.5rem, 5.2vw, 4.25rem);
}

h1 span {
  display: inline-block;
  color: var(--primary);
  text-shadow: 0 6px 30px color-mix(in srgb, var(--primary) 19%, transparent);
}

h2 {
  font-size: clamp(1.85rem, 3vw, 2.5rem);
}

.lead {
  max-width: 42ch;
  margin: 20px 0 24px;
  color: var(--text-soft);
  font-size: 1.02rem;
}

.honesty-note {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 11px;
  max-width: 50ch;
  padding: 15px 16px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  background: var(--primary-soft);
}

.honesty-note svg {
  width: 22px;
  height: 22px;
  margin-top: 2px;
  fill: none;
  stroke: var(--primary);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.honesty-note p {
  margin: 0;
  color: var(--text-soft);
  font-size: .78rem;
  line-height: 1.55;
}

.honesty-note strong {
  color: var(--text);
  font-size: .82rem;
}

.honesty-note a {
  color: var(--primary);
  font-weight: 700;
  text-underline-offset: 2px;
}

.support-controls {
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: color-mix(in srgb, var(--surface-muted) 35%, transparent);
}

.mobile-lead {
  display: none;
}

.controls-lead {
  display: grid;
  gap: 5px;
  max-width: 40ch;
  margin: 0 auto 26px;
  text-align: center;
}

.controls-lead strong {
  color: var(--text);
  font-size: .94rem;
  font-weight: 760;
  letter-spacing: -.015em;
}

.controls-lead span {
  color: var(--text-soft);
  font-size: .75rem;
  line-height: 1.55;
}

.field-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.field-heading > span {
  font-size: .82rem;
  font-weight: 750;
}

.field-heading small {
  color: var(--text-faint);
  font-size: .67rem;
}

.frequency-toggle {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  width: 154px;
  padding: 2px;
  border: 1px solid var(--border);
  border-radius: 99px;
  background: var(--surface-solid);
  isolation: isolate;
}

.frequency-toggle[hidden] {
  display: none;
}

.frequency-toggle::before {
  position: absolute;
  z-index: -1;
  top: 2px;
  bottom: 2px;
  left: 2px;
  width: calc(50% - 2px);
  border-radius: 99px;
  content: "";
  background: var(--primary);
  box-shadow: 0 3px 10px color-mix(in srgb, var(--primary) 25%, transparent);
  transition: transform .22s var(--ease);
}

.frequency-toggle[data-frequency="recurring"]::before {
  transform: translateX(100%);
}

.frequency-option {
  min-height: 25px;
  padding: 3px 8px;
  border: 0;
  border-radius: 99px;
  color: var(--text-faint);
  background: transparent;
  cursor: pointer;
  font-size: .59rem;
  font-weight: 800;
  transition: color .18s ease;
}

.frequency-option.is-active {
  color: #fff;
}

.frequency-option:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.method-heading {
  margin-top: 23px;
}

.amount-picker {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.amount-button,
.method-button {
  border: 1px solid var(--border);
  color: var(--text-soft);
  background: var(--surface-solid);
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease, background .2s ease, transform .2s var(--ease), box-shadow .2s ease;
}

.amount-button {
  min-height: 46px;
  border-radius: 12px;
  font-weight: 800;
}

.amount-button:hover,
.method-button:hover {
  border-color: var(--border-strong);
  color: var(--text);
  transform: translateY(-1px);
}

.amount-button.is-active,
.method-button.is-active {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-soft);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--primary) 10%, transparent), 0 8px 22px color-mix(in srgb, var(--primary) 10%, transparent);
}

.custom-amount {
  position: relative;
  display: block;
  margin-top: 8px;
}

.custom-amount > span {
  position: absolute;
  top: 50%;
  left: 15px;
  z-index: 1;
  color: var(--text-faint);
  transform: translateY(-50%);
  font-size: .82rem;
  font-weight: 700;
}

.custom-amount input {
  width: 100%;
  min-height: 42px;
  padding: 9px 12px 9px 34px;
  border: 1px dashed var(--border);
  border-radius: 12px;
  color: var(--text);
  background: color-mix(in srgb, var(--surface-solid) 65%, transparent);
  font-size: .8rem;
  outline: 0;
  transition: border-color .2s ease, background .2s ease, box-shadow .2s ease;
}

.custom-amount input::placeholder {
  color: var(--text-faint);
}

.custom-amount input:focus,
.custom-amount.is-active input {
  border-style: solid;
  border-color: var(--primary);
  background: var(--surface-solid);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

.method-picker {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 8px;
}

.method-picker + .primary-cta {
  margin-top: 18px;
}

.method-button {
  position: relative;
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 9px;
  align-items: center;
  min-height: 62px;
  padding: 9px 10px;
  border-radius: 13px;
  text-align: left;
}

.method-button.is-unavailable {
  opacity: .66;
}

.method-icon {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 9px;
  color: var(--primary);
  background: var(--primary-soft);
  font-size: .7rem;
  font-weight: 900;
  letter-spacing: -.03em;
}

.method-icon svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

[data-theme="dark"] .method-button[data-method="github"] .method-icon svg,
[data-theme="blackhole"] .method-button[data-method="github"] .method-icon svg {
  fill: #fff;
}

.method-copy {
  display: grid;
  min-width: 0;
}

.method-copy strong {
  overflow: hidden;
  color: var(--text);
  font-size: .73rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.method-copy small {
  overflow: hidden;
  color: var(--text-faint);
  font-size: .59rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.method-badge {
  position: absolute;
  top: -7px;
  right: 7px;
  padding: 2px 5px;
  border: 1px solid color-mix(in srgb, var(--primary) 23%, var(--surface-solid));
  border-radius: 99px;
  color: var(--primary);
  background: var(--surface-solid);
  font-size: .47rem;
  font-weight: 850;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.primary-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  min-height: 49px;
  padding: 11px 16px;
  border: 0;
  border-radius: 13px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary-bright), #0879bd);
  box-shadow: 0 12px 26px rgba(8, 143, 190, .25), inset 0 1px 0 rgba(255, 255, 255, .2);
  cursor: pointer;
  font-weight: 800;
  transition: transform .2s var(--ease), filter .2s ease, box-shadow .2s ease;
}

.primary-cta:hover:not(:disabled) {
  filter: brightness(1.07);
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(8, 143, 190, .32), inset 0 1px 0 rgba(255, 255, 255, .25);
}

.primary-cta:active:not(:disabled) {
  transform: translateY(0) scale(.99);
}

.primary-cta:disabled {
  color: var(--text-faint);
  background: var(--surface-solid);
  box-shadow: inset 0 0 0 1px var(--border);
  cursor: not-allowed;
}

.primary-cta svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.provider-note {
  margin: 7px 0 0;
  color: var(--text-faint);
  text-align: center;
  font-size: .6rem;
}

.setup-notice {
  margin-top: 13px;
  padding: 11px 12px;
  border-radius: 11px;
  font-size: .66rem;
}

.setup-notice[hidden] {
  display: none;
}

.setup-notice {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px;
  border: 1px dashed color-mix(in srgb, var(--warning) 45%, var(--border));
  color: var(--text-soft);
  background: color-mix(in srgb, var(--warning) 9%, transparent);
}

.setup-notice strong {
  color: var(--warning);
}

.setup-notice code {
  color: var(--text);
  font-size: .64rem;
}

.page-footer {
  gap: 24px;
  padding: 18px 5px 0;
  color: var(--text-faint);
  font-size: .7rem;
}

.page-footer p {
  margin: 0;
}

.page-footer a {
  flex: 0 0 auto;
  color: var(--text-soft);
  font-weight: 700;
  text-decoration: none;
}

.page-footer a:hover {
  color: var(--primary);
}

.theme-toggle {
  position: fixed;
  top: 22px;
  right: 22px;
  z-index: 10;
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 13px;
  color: var(--text-soft);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  cursor: pointer;
  backdrop-filter: blur(14px);
  transition: transform .2s var(--ease), color .2s ease, border-color .2s ease;
}

.theme-toggle:hover {
  border-color: var(--border-strong);
  color: var(--primary);
  transform: translateY(-2px) rotate(3deg);
}

.theme-icon {
  display: none;
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

[data-theme="light"] .theme-icon-sun,
[data-theme="dark"] .theme-icon-moon,
[data-theme="blackhole"] .theme-icon-blackhole {
  display: block;
}

.amount-toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  z-index: 30;
  padding: 8px 13px;
  border: 1px solid var(--border-strong);
  border-radius: 99px;
  color: var(--text);
  background: var(--surface-solid);
  box-shadow: var(--shadow-soft);
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, 12px);
  font-size: .68rem;
}

.amount-toast.is-visible {
  animation: toast 1.5s var(--ease) both;
}

@keyframes reveal {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes toast {
  0% { opacity: 0; transform: translate(-50%, 12px); }
  16%, 78% { opacity: 1; transform: translate(-50%, 0); }
  100% { opacity: 0; transform: translate(-50%, -5px); }
}

@media (min-width: 781px) {
  .support-copy h1 {
    margin-bottom: 26px;
  }
}

@media (max-width: 1120px) {
  .theme-toggle {
    top: auto;
    right: 18px;
    bottom: 18px;
  }
}

@media (max-width: 780px) {
  .page-shell {
    width: min(100% - 22px, 650px);
    padding-top: 20px;
  }

  .subtitle-cue {
    margin-top: 25px;
  }

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

  .support-copy {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .controls-lead {
    display: none;
  }

  .mobile-lead {
    display: block;
  }

  h1 {
    max-width: 9ch;
    margin-inline: auto;
    text-align: center;
    font-size: clamp(2.35rem, 10.5vw, 3.65rem);
  }

  .page-footer {
    align-items: flex-start;
  }
}

@media (max-width: 520px) {
  .support-copy,
  .support-controls {
    padding: 27px 20px;
  }

  .amount-picker {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .method-button {
    min-height: 54px;
  }

  .method-badge {
    top: 50%;
    right: 10px;
    transform: translateY(-50%);
  }

  .page-footer {
    display: grid;
    gap: 12px;
  }

  .page-footer {
    justify-items: center;
    text-align: center;
  }

}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}