/* Concept B: Warm neutral + deep teal. Grounded, calm, professional, less default SaaS. */
:root {
  --font-sans: Georgia, "Times New Roman", serif; --page-bg: #F8F6F2; --card-bg: #FFFDF8; --text: #24302F; --heading: #17211F; --muted: #66706E; --border: #DDD8CF;
  --accent: #0F766E; --accent-hover: #115E59; --success: #15803D; --warning: #A16207; --error: #B91C1C; --focus: #5EEAD4;
  --input-border: #CFC8BB; --input-bg: #FFFFFF; --switch-bg: rgba(255,253,248,.76); --mark-bg: #0F766E; --mark-text: #FFFFFF; --mark-shadow: 0 8px 20px rgba(15,118,110,.16);
  --trust-dot: #CCFBF1; --trust-dot-inner: #0F766E; --status-icon-bg: #DCFCE7; --status-icon-text: #15803D; --warning-bg: #FEF3C7;
  --page-width: 1020px; --page-pad-y: 58px; --checkout-columns: minmax(0, .9fr) minmax(420px, 540px); --layout-gap: 44px; --layout-align: start;
  --hero-pad: 32px 10px 0 0; --card-pad: 38px; --card-radius: 22px; --input-radius: 12px; --button-radius: 999px; --mark-radius: 50%;
  --shadow: 0 18px 44px rgba(61, 50, 34, 0.08); --button-shadow: 0 12px 22px rgba(15, 118, 110, 0.18); --h1-size: 38px;
  --status-align: center; --status-icon-margin: 0 auto 18px; --action-justify: center;
}
body, input, button { font-family: Source Sans 3, Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
h1 { font-family: Merriweather, Georgia, serif; letter-spacing: -0.035em; }
.hero-panel { border-left: 3px solid var(--border); padding-left: 26px; }
.payment-card { position: relative; overflow: hidden; }
.payment-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 6px; background: linear-gradient(90deg, #0F766E, #5EEAD4); }

* { box-sizing: border-box; }
html { min-height: 100%; }
body { margin: 0; min-height: 100vh; font-family: var(--font-sans); background: var(--page-bg); color: var(--text); }
a { color: var(--accent); text-decoration-thickness: 0.08em; text-underline-offset: 0.16em; }
a:hover { color: var(--accent-hover); }
.skip-link { position: absolute; left: 16px; top: -60px; z-index: 20; padding: 10px 14px; border-radius: 8px; background: var(--text); color: #fff; }
.skip-link:focus { top: 16px; }
.site-header { width: min(100% - 40px, 1080px); margin: 0 auto; padding: 28px 0 12px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand-lockup { display: flex; align-items: center; gap: 12px; }
.brand-mark { width: 42px; height: 42px; border-radius: var(--mark-radius); display: grid; place-items: center; background: var(--mark-bg); color: var(--mark-text); font-weight: 750; letter-spacing: -0.03em; box-shadow: var(--mark-shadow); }
.brand-name, .brand-kicker { margin: 0; }
.brand-name { font-weight: 750; letter-spacing: -0.02em; }
.brand-kicker { margin-top: 2px; color: var(--muted); font-size: 13px; }
.concept-switcher { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.concept-switcher a { border: 1px solid var(--border); background: var(--switch-bg); color: var(--muted); border-radius: 999px; padding: 8px 11px; font-size: 13px; font-weight: 650; text-decoration: none; }
.concept-switcher a[aria-current="true"] { background: var(--accent); color: #fff; border-color: var(--accent); }
.page-shell { width: min(100% - 40px, var(--page-width)); margin: 0 auto; padding: var(--page-pad-y) 0 44px; }
.checkout-shell { display: grid; grid-template-columns: var(--checkout-columns); gap: var(--layout-gap); align-items: var(--layout-align); }
.hero-panel { padding: var(--hero-pad); }
.eyebrow { margin: 0 0 10px; color: var(--accent); font-size: 13px; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(26px, 4vw, var(--h1-size)); line-height: 1.16; letter-spacing: -0.04em; color: var(--heading); }
.intro { margin: 14px 0 0; color: var(--muted); font-size: 16px; line-height: 1.55; }
.trust-list { margin: 24px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; color: var(--muted); font-size: 14px; line-height: 1.45; }
.trust-list li { position: relative; padding-left: 26px; }
.trust-list li::before { content: ""; position: absolute; left: 0; top: 0.36em; width: 14px; height: 14px; border-radius: 50%; background: var(--trust-dot); box-shadow: inset 0 0 0 4px var(--trust-dot-inner); }
.payment-card, .status-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--card-radius); box-shadow: var(--shadow); }
.payment-card { padding: var(--card-pad); }
.payment-form { display: grid; gap: 22px; }
.field-group { display: grid; gap: 7px; }
label { color: var(--heading); font-weight: 750; font-size: 15px; }
.helper, .microcopy, .security-note, .field-error { margin: 0; font-size: 14px; line-height: 1.45; }
.helper, .microcopy, .security-note { color: var(--muted); }
.microcopy { font-size: 13px; }
input { width: 100%; height: 52px; border: 1px solid var(--input-border); border-radius: var(--input-radius); background: var(--input-bg); color: var(--text); padding: 0 14px; font: inherit; font-size: 16px; outline: none; transition: border-color .16s ease, box-shadow .16s ease, background .16s ease; }
input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--focus); }
input.is-invalid { border-color: var(--error); }
.amount-input-wrap { position: relative; }
.currency-symbol { position: absolute; left: 15px; top: 50%; transform: translateY(-50%); color: var(--muted); font-weight: 700; }
.amount-input-wrap input { padding-left: 32px; }
.primary-button { min-height: 52px; border: 0; border-radius: var(--button-radius); background: var(--accent); color: #fff; display: inline-flex; align-items: center; justify-content: center; padding: 0 18px; font: inherit; font-weight: 750; cursor: pointer; text-decoration: none; box-shadow: var(--button-shadow); transition: transform .16s ease, background .16s ease, box-shadow .16s ease; }
.primary-button:hover { background: var(--accent-hover); color: #fff; transform: translateY(-1px); }
.primary-button:focus-visible, .secondary-link:focus-visible, .concept-switcher a:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
.primary-button:disabled { opacity: .78; cursor: wait; transform: none; }
.error-summary { border-radius: 10px; border: 1px solid color-mix(in srgb, var(--error) 35%, white); background: color-mix(in srgb, var(--error) 8%, white); color: var(--error); padding: 12px 14px; font-weight: 650; }
.error-summary p { margin: 0; }
.field-error { color: var(--error); font-weight: 650; }
.status-shell { max-width: 680px; }
.status-card { padding: clamp(28px, 6vw, 44px); text-align: var(--status-align); }
.status-card p:not(.eyebrow) { color: var(--muted); line-height: 1.6; }
.status-icon { width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center; margin: var(--status-icon-margin); font-weight: 850; background: var(--status-icon-bg); color: var(--status-icon-text); }
.cancel-card .status-icon { background: var(--warning-bg); color: var(--warning); }
.action-row { margin-top: 26px; display: flex; align-items: center; justify-content: var(--action-justify); gap: 16px; flex-wrap: wrap; }
.link-button { min-width: 190px; }
.secondary-link { font-weight: 750; }
.site-footer { width: min(100% - 40px, 1080px); margin: 0 auto; padding: 8px 0 34px; color: var(--muted); font-size: 14px; text-align: center; }
@media (max-width: 780px) {
  .site-header { align-items: flex-start; flex-direction: column; }
  .concept-switcher { justify-content: flex-start; }
  .checkout-shell { grid-template-columns: 1fr; }
  .hero-panel { padding: 0; }
  .page-shell { padding-top: 30px; }
  .payment-card { padding: 24px; }
  .primary-button { width: 100%; }
  .action-row { align-items: stretch; flex-direction: column; }
  .secondary-link { text-align: center; }
}


/* Production refinement: concept switcher removed; keep header simple on all screen sizes. */
.site-header { justify-content: flex-start; }
.brand-lockup { max-width: 100%; }