:root {
  color-scheme: dark;
  --bg: #0d0f1a;
  --panel: #161a2b;
  --panel-2: #1e2338;
  --border: rgba(255, 255, 255, 0.08);
  --text: #f4f7fb;
  --muted: #95a0b8;
  --accent: #b06cff;
  --accent-2: #7c46cc;
  --good: #6ad88f;
  --warn: #ffb74d;
  --error: #ff6b6b;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Trebuchet MS", "Segoe UI", system-ui, sans-serif;
  min-height: 100vh;
}

body {
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code {
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.9em;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.1em 0.4em;
  border-radius: 4px;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.2);
}

.brand {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.02em;
}
.brand span {
  color: var(--accent);
}

.user-nav {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 14px;
  color: var(--muted);
}

.user-name {
  color: var(--text);
}

.logout-form { margin: 0; }

.link-button {
  appearance: none;
  background: transparent;
  border: 0;
  color: var(--muted);
  font: inherit;
  cursor: pointer;
  padding: 4px 6px;
}
.link-button:hover { color: var(--accent); }

.page-main {
  flex: 1;
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 24px 60px;
}

h1 {
  margin: 0 0 24px;
  font-size: 32px;
  letter-spacing: -0.01em;
}

h2 {
  margin: 0 0 12px;
  font-size: 20px;
}

p { line-height: 1.55; }

.lead {
  font-size: 17px;
  color: #dde3ef;
}

.muted { color: var(--muted); }
.small { font-size: 13px; }

.primary-button,
button.primary-button {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 600;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.1s ease, box-shadow 0.2s ease;
  box-shadow: 0 8px 24px rgba(124, 70, 204, 0.35);
}
.primary-button:hover {
  transform: translateY(-1px);
  text-decoration: none;
  box-shadow: 0 12px 28px rgba(124, 70, 204, 0.45);
}
.primary-button:active { transform: translateY(0); }

.hero {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px;
  display: grid;
  gap: 22px;
}

.tip-goal {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
}

.tip-goal-compact {
  margin-bottom: 24px;
}

.goal-bar {
  position: relative;
  height: 14px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 999px;
  overflow: hidden;
}

.goal-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #4ad67b);
  transition: width 0.3s ease;
}

.goal-figures {
  display: flex;
  justify-content: space-between;
  margin: 10px 0 0;
  font-size: 14px;
}
.goal-figures strong {
  font-size: 18px;
  color: var(--text);
}
.goal-figures span { color: var(--muted); }

.donate-form {
  display: grid;
  gap: 24px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px;
}

.donate-form fieldset {
  margin: 0;
  padding: 0;
  border: 0;
  display: grid;
  gap: 12px;
}

.donate-form legend {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.amount-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.preset-button {
  appearance: none;
  padding: 10px 18px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.preset-button:hover {
  background: rgba(176, 108, 255, 0.18);
  border-color: var(--accent);
}

.amount-label, .message-label {
  display: grid;
  gap: 6px;
}
.amount-label > span {
  font-size: 14px;
  color: var(--muted);
}

input[type="number"],
textarea {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font: inherit;
  padding: 12px 14px;
  width: 100%;
}
input[type="number"]:focus,
textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

textarea { resize: vertical; }

.checkbox-label {
  display: inline-flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  line-height: 1.4;
}

.checkbox-label input {
  margin-top: 4px;
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.flash {
  padding: 12px 16px;
  background: rgba(255, 183, 77, 0.18);
  border: 1px solid rgba(255, 183, 77, 0.5);
  color: #ffe7c2;
  border-radius: 10px;
  margin-bottom: 20px;
}

.placeholder-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 28px;
  display: grid;
  gap: 18px;
}

.intent-summary {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 8px 24px;
  margin: 0;
}
.intent-summary dt {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.intent-summary dd {
  margin: 0;
  font-size: 15px;
}

.page-footer {
  padding: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.18);
}

@media (max-width: 600px) {
  .page-main { padding: 24px 16px 40px; }
  h1 { font-size: 26px; }
  .hero, .donate-form, .placeholder-box { padding: 20px; }
  .intent-summary { grid-template-columns: 1fr; gap: 4px; }
  .intent-summary dt { margin-top: 8px; }
}

.net-info {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 14px;
  background: rgba(106, 216, 143, 0.08);
  border: 1px solid rgba(106, 216, 143, 0.25);
  border-radius: 10px;
  margin: 4px 0 0;
  font-size: 14px;
  color: #dde3ef;
}

.net-info strong {
  font-size: 18px;
  color: var(--good);
  letter-spacing: 0.01em;
}

.net-formula {
  color: var(--muted);
  font-size: 13px;
}