:root {
  color-scheme: light;
  --color-bg:            #fbf7f1;
  --color-surface:       #ffffff;
  --color-surface-raised:#f7f2ea;
  --color-border:        #e6dfd2;
  --color-border-subtle: #efe8dc;
  --color-text:          #22201b;
  --color-text-muted:    #6b675e;
  --color-primary:       oklch(62% 0.15 65);
  --color-primary-hover: oklch(56% 0.15 65);
  --color-on-primary:    #ffffff;
  --color-success:       oklch(56% 0.14 145);
  --color-danger:        oklch(58% 0.18 25);
  --radius:              10px;
  --shadow-md: 0 8px 24px -12px rgba(34, 32, 27, 0.14);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.brand {
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  font-size: 1.1rem;
}

.topbar nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
}
.topbar nav a:hover { color: var(--color-text); }

main {
  flex: 1;
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  width: 100%;
}

.hero {
  text-align: center;
  margin-bottom: 2rem;
}
.hero h1 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin: 0 0 0.5rem;
}
.hero .lede {
  color: var(--color-text-muted);
  max-width: 700px;
  margin: 0 auto;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
}

fieldset {
  border: 0;
  padding: 0;
  margin: 0 0 1.5rem;
}
fieldset:last-of-type { margin-bottom: 0.5rem; }

legend {
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 0.25rem;
  padding: 0;
  color: var(--color-text);
}

.fieldset-hint {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin: 0 0 1rem;
}

/* Billing-cycle picker — compact chip pair above the module grid. */
.cycle-picker {
  display: inline-flex;
  gap: 0.25rem;
  padding: 0.3rem;
  margin: 0 0 1rem;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: 999px;
}
.cycle-picker .radio {
  padding: 0.4rem 1rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  position: relative;
}
.cycle-picker .radio input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}
.cycle-picker .radio:has(input:checked) {
  background: var(--color-primary);
  color: var(--color-on-primary);
}
.cycle-picker .save-hint {
  font-size: 0.7rem;
  font-weight: 500;
  opacity: 0.75;
}

.grid {
  display: grid;
  gap: 1rem;
}
.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
@media (max-width: 620px) {
  .grid.two { grid-template-columns: 1fr; }
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
label > span,
.group-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
}
label > span em {
  color: var(--color-danger);
  font-style: normal;
  margin-left: 0.15rem;
}

label.full { grid-column: 1 / -1; }

input[type=text], input[type=email], input[type=tel], input[type=number] {
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  font-family: inherit;
  font-size: 0.9rem;
  color: var(--color-text);
}
input:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

.hint  { color: var(--color-text-muted); font-size: 0.7rem; }
.field-error { color: var(--color-danger); font-size: 0.72rem; }
.form-error  { color: var(--color-danger); font-weight: 500; text-align: right; margin: 0.5rem 0 0; }

.radio-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.radio {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.85rem;
}
.radio input { accent-color: var(--color-primary); }
.radio:has(input:checked) {
  border-color: var(--color-primary);
  background: oklch(from var(--color-primary) l c h / 0.08);
}

.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
}

.module-card {
  text-align: left;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: transform 80ms ease-out, border-color 80ms ease-out;
  font: inherit;
  color: inherit;
}
.module-card:hover { transform: translateY(-1px); border-color: var(--color-primary-hover); }
.module-card.selected {
  border-color: var(--color-primary);
  background: oklch(from var(--color-primary) l c h / 0.08);
}
.module-card .head {
  display: flex;
  justify-content: space-between;
  gap: 0.4rem;
  align-items: baseline;
}
.module-card .name { font-weight: 600; font-size: 0.95rem; }
.module-card .code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.7rem; color: var(--color-text-muted); }
.module-card .desc { font-size: 0.78rem; color: var(--color-text-muted); margin: 0; }
.module-card .price { font-weight: 600; font-size: 0.9rem; margin: 0; }
.module-card .cycle { font-weight: 500; font-size: 0.7rem; color: var(--color-text-muted); margin-left: 0.25rem; }

.addon-container { margin-top: 1.25rem; display: flex; flex-direction: column; gap: 1rem; }

.addon-section h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin: 0 0 0.65rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border-subtle);
}
.addon-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0.5rem; }
.addon-card {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  background: var(--color-surface);
}
.addon-card:has(input:checked) {
  border-color: var(--color-primary);
  background: oklch(from var(--color-primary) l c h / 0.07);
}
.addon-card.always-on { cursor: default; }
.addon-card input { margin-top: 0.15rem; accent-color: var(--color-primary); }
.addon-card .a-name { font-size: 0.85rem; font-weight: 600; }
.addon-card .a-desc { font-size: 0.72rem; color: var(--color-text-muted); margin: 0.25rem 0 0; }
.addon-card .a-price { font-size: 0.78rem; font-weight: 600; margin: 0.25rem 0 0; }
.addon-card .tag {
  display: inline-block;
  margin-left: 0.35rem;
  padding: 0 0.35rem;
  border-radius: 999px;
  background: var(--color-success);
  color: #fff;
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
}

.summary-bar {
  position: sticky;
  bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  margin-top: 1.25rem;
}

.summary-bar .muted { color: var(--color-text-muted); font-size: 0.75rem; margin: 0; }
.summary-bar .total { font-size: 1.2rem; font-weight: 700; margin: 0.15rem 0 0; }

.btn {
  padding: 0.65rem 1.2rem;
  border-radius: 8px;
  border: 0;
  font-weight: 600;
  cursor: pointer;
  font-size: 0.9rem;
  font-family: inherit;
}
.btn.primary { background: var(--color-primary); color: var(--color-on-primary); }
.btn.primary:hover:not(:disabled) { background: var(--color-primary-hover); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.card.success h2 { color: var(--color-success); margin: 0 0 0.5rem; }
.card.success a  { color: var(--color-primary); word-break: break-all; }

footer {
  padding: 1.5rem 2rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border-subtle);
  background: var(--color-surface);
}

/* ── Register-page hero variant ───────────────────────────────────────── */

.hero.compact { margin: 1.5rem 0 1.5rem; }
.hero.compact h1 { font-size: clamp(1.4rem, 2.5vw, 1.8rem); }

.topbar .back-link {
  margin-right: 1rem;
  font-size: 0.85rem;
}

/* ── Landing-page topbar (extends .topbar) ───────────────────────────── */

.topbar nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.topbar nav a:not(.btn) {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  text-decoration: none;
}
.topbar nav a:not(.btn):hover { color: var(--color-text); }

.btn.btn-nav {
  padding: 0.45rem 0.9rem;
  font-size: 0.85rem;
  border-radius: 8px;
  text-decoration: none;
}

.btn.btn-lg {
  padding: 0.85rem 1.6rem;
  font-size: 1rem;
  text-decoration: none;
  display: inline-block;
}
.btn.ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn.ghost:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ── Landing hero ────────────────────────────────────────────────────── */

.lp-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 3rem;
  align-items: center;
  padding: 3.5rem 0 4rem;
}
@media (max-width: 820px) {
  .lp-hero {
    grid-template-columns: 1fr;
    padding: 2rem 0 2.5rem;
    gap: 2rem;
  }
}

.lp-hero .eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin: 0 0 1rem;
}

.lp-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  line-height: 1.1;
  margin: 0 0 1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.lp-hero .lede {
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--color-text-muted);
  max-width: 46ch;
  margin: 0 0 1.5rem;
}

.cta-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.hero-note {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  max-width: 46ch;
  margin: 0;
}

/* Decorative floating module tiles */
.lp-hero-art {
  position: relative;
  aspect-ratio: 1 / 1;
  min-height: 320px;
}
.lp-hero-art .tile {
  position: absolute;
  padding: 0.65rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  box-shadow: var(--shadow-md);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-text);
}
.lp-hero-art .tile-1 { top:  5%;  left:  5%; background: oklch(from var(--color-primary) l c h / 0.09); border-color: var(--color-primary); color: var(--color-primary); }
.lp-hero-art .tile-2 { top: 15%;  right: 8%; }
.lp-hero-art .tile-3 { top: 42%;  left: 25%; }
.lp-hero-art .tile-4 { top: 55%;  right: 4%; background: oklch(from var(--color-success) l c h / 0.09); border-color: var(--color-success); color: var(--color-success); }
.lp-hero-art .tile-5 { bottom: 8%; left: 8%; }
.lp-hero-art .tile-6 { bottom: 18%; right: 20%; }

@media (max-width: 820px) {
  .lp-hero-art { display: none; }
}

/* ── Sections ────────────────────────────────────────────────────────── */

.section {
  padding: 3.5rem 0;
  border-top: 1px solid var(--color-border-subtle);
}
.section.alt {
  background: var(--color-surface);
  margin: 0 -1.5rem;
  padding: 3.5rem 1.5rem;
}
.section > h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  margin: 0 0 0.75rem;
  letter-spacing: -0.01em;
}
.section > .section-lede {
  font-size: 1rem;
  color: var(--color-text-muted);
  max-width: 55ch;
  margin: 0 0 2rem;
}

/* ── Feature grid ────────────────────────────────────────────────────── */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}
.feature {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.feature-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: oklch(from var(--color-primary) l c h / 0.1);
  color: var(--color-primary);
  margin-bottom: 0.9rem;
}
.feature-icon svg { width: 22px; height: 22px; }
.feature h3 {
  font-size: 1rem;
  margin: 0 0 0.4rem;
  font-weight: 700;
}
.feature p {
  font-size: 0.87rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  margin: 0;
}

/* ── Reasons ─────────────────────────────────────────────────────────── */

.reasons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.reason {
  padding: 0.5rem 0;
}
.reason-num {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.05em;
}
.reason h3 {
  font-size: 1.05rem;
  margin: 0.4rem 0 0.5rem;
}
.reason p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  margin: 0;
}

/* ── Steps ───────────────────────────────────────────────────────────── */

.steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
}
.steps li {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-on-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.8rem;
}
.steps h3 { margin: 0 0 0.4rem; font-size: 1rem; }
.steps p  { margin: 0; font-size: 0.87rem; color: var(--color-text-muted); line-height: 1.55; }

/* ── Pricing note ────────────────────────────────────────────────────── */

.pricing-note {
  max-width: 620px;
  margin: 0 auto;
  text-align: center;
}
.pricing-note p {
  color: var(--color-text-muted);
  margin: 0 0 1.5rem;
  line-height: 1.55;
}

/* ── Bottom CTA ──────────────────────────────────────────────────────── */

.cta-section {
  text-align: center;
  padding: 4rem 0 3rem;
}
.cta-section h2 { margin-bottom: 0.5rem; }
.cta-section .section-lede { margin-left: auto; margin-right: auto; margin-bottom: 1.5rem; }

/* ── Landing footer ──────────────────────────────────────────────────── */

.lp-footer {
  padding: 2rem 2rem 1.5rem;
  border-top: 1px solid var(--color-border-subtle);
  background: var(--color-surface);
}
.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.lp-footer .brand {
  font-weight: 700;
  color: var(--color-primary);
  margin: 0;
}
.lp-footer .muted { font-size: 0.75rem; color: var(--color-text-muted); margin: 0.15rem 0 0; }
.footer-nav { display: flex; gap: 1.25rem; }
.footer-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.85rem;
}
.footer-nav a:hover { color: var(--color-text); }
.copyright {
  max-width: 1000px;
  margin: 1.5rem auto 0;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border-subtle);
  font-size: 0.72rem;
  color: var(--color-text-muted);
  text-align: center;
}