/*
 * XC5K — single hand-written stylesheet (no framework, no build step).
 *
 * Palette is derived from public/xc5k_design.png: watercolor sky blue and
 * meadow green washes, deep forest green marks, navy display text. All
 * text/background pairs used below meet WCAG 2.1 AA contrast (>= 4.5:1 for
 * body text, >= 3:1 for large text and UI outlines).
 *
 * Layout: mobile-first, content capped at 1200px (--container-max).
 */

:root {
    /* Inks */
    --ink: #1d2a44;          /* navy — body text, headings (13.5:1 on white) */
    --ink-soft: #44506a;     /* muted text (7.2:1 on white) */
    --forest: #3f671f;       /* primary green — links, buttons (5.9:1 on white) */
    --forest-deep: #2d4b15;  /* hover / active */
    --error: #b3261e;        /* form errors (6.3:1 on white) */

    /* Washes */
    --paper: #ffffff;
    --sky-wash: #dceef8;
    --meadow-wash: #e2f0d2;
    --surface: #f5f8f2;      /* card / panel background */
    --line: #cdd6cb;         /* borders */

    --container-max: 1200px;
    --radius: 0.5rem;
    --focus-ring: 3px solid #1d2a44;
}

/* ---------- Base ---------- */

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

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    font-size: 1.0625rem;
    line-height: 1.6;
    color: var(--ink);
    background-color: var(--paper);
}

img {
    max-width: 100%;
    height: auto;
}

h1, h2, h3 {
    line-height: 1.2;
    margin: 0 0 0.6em;
    font-weight: 800;
    letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); margin-top: 1.6em; }
h3 { font-size: 1.2rem; }

p, ul, ol { margin: 0 0 1em; }

a {
    color: var(--forest);
    text-underline-offset: 0.15em;
}

a:hover { color: var(--forest-deep); }

:focus-visible {
    outline: var(--focus-ring);
    outline-offset: 2px;
    border-radius: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

.container {
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: 1rem;
}

@media (min-width: 40em) {
    .container { padding-inline: 1.5rem; }
}

/* ---------- Skip link ---------- */

.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
    z-index: 100;
    padding: 0.75rem 1.25rem;
    background: var(--ink);
    color: #fff;
}

.skip-link:focus {
    left: 0;
    color: #fff;
}

/* ---------- Header / nav ---------- */

.site-header {
    border-bottom: 1px solid var(--line);
    background: var(--paper);
}

.site-header__inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem 1rem;
    padding-block: 0.6rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--ink);
}

.brand__logo {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    object-fit: cover;
}

.brand__name {
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.brand__sub {
    display: block;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--ink-soft);
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    min-height: 44px;
    padding: 0.5rem 0.9rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--paper);
    color: var(--ink);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
    display: block;
    width: 1.1rem;
    height: 2px;
    background: currentColor;
    content: "";
}

.nav-toggle__bars {
    position: relative;
}

.nav-toggle__bars::before { position: absolute; top: -5px; }
.nav-toggle__bars::after { position: absolute; top: 5px; }

.site-nav {
    /* Collapsed by default on small screens; app.js toggles [data-nav-open]. */
    display: none;
    flex-basis: 100%;
}

.site-nav[data-nav-open] { display: block; }

.site-nav__list {
    list-style: none;
    margin: 0;
    padding: 0.5rem 0 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.site-nav__list a {
    display: block;
    padding: 0.55rem 0.5rem;
    min-height: 44px;
    font-weight: 600;
    text-decoration: none;
    color: var(--ink);
    border-radius: var(--radius);
}

.site-nav__list a:hover { background: var(--meadow-wash); color: var(--ink); }

@media (min-width: 48em) {
    .nav-toggle { display: none; }

    .site-nav {
        display: block;
        flex-basis: auto;
    }

    .site-nav__list {
        flex-direction: row;
        align-items: center;
        gap: 0.25rem;
        padding: 0;
    }
}

/* ---------- Buttons ---------- */

.btn {
    display: inline-block;
    min-height: 44px;
    padding: 0.65rem 1.4rem;
    border: 2px solid transparent;
    border-radius: var(--radius);
    font: inherit;
    font-weight: 700;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
}

.btn--primary {
    background: var(--forest);
    color: #fff;
}

.btn--primary:hover {
    background: var(--forest-deep);
    color: #fff;
}

.btn--secondary {
    background: var(--paper);
    color: var(--ink);
    border-color: var(--ink);
}

.btn--secondary:hover { background: var(--sky-wash); color: var(--ink); }

.btn--nav { padding: 0.45rem 1.1rem; }

.btn--big {
    font-size: 1.15rem;
    padding: 0.8rem 1.8rem;
}

/* ---------- Flashes ---------- */

.flash {
    margin: 1rem 0 0;
    padding: 0.8rem 1rem;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: var(--surface);
    font-weight: 600;
}

.flash--success { background: var(--meadow-wash); border-color: var(--forest); }
.flash--error { background: #fbeae9; border-color: var(--error); color: var(--error); }

/* ---------- Hero ---------- */

.hero {
    background:
        linear-gradient(160deg, var(--sky-wash) 0%, var(--paper) 48%, var(--meadow-wash) 100%);
    border-bottom: 1px solid var(--line);
}

.hero__inner {
    display: grid;
    gap: 1.5rem;
    align-items: center;
    padding-block: 2.5rem;
}

.hero__kicker {
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-size: 0.85rem;
    color: var(--forest-deep);
    margin-bottom: 0.4rem;
}

.hero__lede {
    font-size: 1.2rem;
    max-width: 38rem;
}

.hero__logo {
    max-width: 16rem;
    justify-self: center;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

@media (min-width: 48em) {
    .hero__inner {
        grid-template-columns: 3fr 2fr;
        padding-block: 3.5rem;
    }

    .hero__logo { max-width: 20rem; }
}

/* ---------- Fact cards / feature grids ---------- */

.facts {
    display: grid;
    gap: 1rem;
    padding: 0;
    margin: 1.5rem 0;
    list-style: none;
}

@media (min-width: 40em) {
    .facts { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 60em) {
    .facts { grid-template-columns: repeat(4, 1fr); }
}

.fact {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1rem 1.1rem;
}

.fact__label {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-soft);
}

.fact__value {
    display: block;
    font-size: 1.15rem;
    font-weight: 800;
}

.callout {
    background: var(--meadow-wash);
    border: 1px solid var(--forest);
    border-radius: var(--radius);
    padding: 1.1rem 1.3rem;
    margin: 1.5rem 0;
}

.callout--sky {
    background: var(--sky-wash);
    border-color: var(--ink-soft);
}

/* ---------- Tier cards (sponsorship) ---------- */

.tiers {
    display: grid;
    gap: 1.25rem;
    margin: 1.5rem 0;
}

@media (min-width: 48em) {
    .tiers { grid-template-columns: repeat(3, 1fr); }
}

.tier {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    padding: 1.4rem;
}

.tier--featured { border: 2px solid var(--forest); }

.tier__rank {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--forest-deep);
}

.tier__price {
    font-size: 2rem;
    font-weight: 800;
    margin: 0.2rem 0 0.6rem;
}

.tier ul {
    padding-left: 1.2rem;
    flex-grow: 1;
}

/* ---------- Content pages ---------- */

.page {
    padding-block: 2rem 3rem;
    max-width: 46rem;
}

.page--wide { max-width: none; }

/* ---------- Forms ---------- */

.form-section {
    margin: 0 0 2rem;
    padding: 0;
    border: 0;
}

.form-section > legend {
    font-size: 1.2rem;
    font-weight: 800;
    padding: 0;
    margin-bottom: 0.75rem;
}

.form-row {
    margin-bottom: 1.1rem;
}

.form-row label,
.form-row > .form-label {
    display: block;
    font-weight: 700;
    margin-bottom: 0.3rem;
}

.form-hint {
    display: block;
    font-size: 0.9rem;
    color: var(--ink-soft);
    margin-bottom: 0.3rem;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="date"],
input[type="number"],
input[type="password"],
input[type="url"],
select,
textarea {
    width: 100%;
    max-width: 28rem;
    min-height: 44px;
    padding: 0.55rem 0.7rem;
    font: inherit;
    color: var(--ink);
    background: var(--paper);
    border: 1px solid var(--ink-soft);
    border-radius: var(--radius);
}

input[type="checkbox"],
input[type="radio"] {
    width: 1.25rem;
    height: 1.25rem;
    accent-color: var(--forest);
}

.choice-row {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
}

.choice-row label {
    font-weight: 600;
    margin: 0;
}

.form-errors {
    color: var(--error);
    font-weight: 600;
    margin: 0.25rem 0 0;
    padding-left: 0;
    list-style: none;
}

.form-row--invalid input,
.form-row--invalid select,
.form-row--invalid textarea {
    border-color: var(--error);
    border-width: 2px;
}

.form-error-summary {
    border: 2px solid var(--error);
    border-radius: var(--radius);
    background: #fbeae9;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
}

.form-error-summary h2 {
    margin: 0 0 0.5rem;
    font-size: 1.1rem;
    color: var(--error);
}

.form-error-summary ul { margin: 0; padding-left: 1.2rem; }

.waiver-box {
    max-height: 16rem;
    overflow-y: auto;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
}

/* ---------- Admin ---------- */

.admin-nav {
    border-block: 1px solid var(--line);
    margin-bottom: 1.5rem;
}

.admin-nav .site-nav__list {
    flex-direction: row;
    flex-wrap: wrap;
    padding: 0.25rem 0;
}

.mfa-code-input {
    font-size: 1.4rem;
    letter-spacing: 0.3em;
    font-variant-numeric: tabular-nums;
    max-width: 16rem;
}

.mfa-qr {
    display: block;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    margin-bottom: 1rem;
}

.mfa-secret {
    user-select: all;
    word-break: break-all;
}

.mfa-backup-codes {
    columns: 2;
    list-style: none;
    padding: 0;
    max-width: 24rem;
}

.mfa-backup-codes code {
    font-size: 1.1rem;
    line-height: 2;
}

/* ---------- Tables (admin + FAQ) ---------- */

.table-scroll {
    overflow-x: auto;
}

table {
    border-collapse: collapse;
    width: 100%;
    margin-bottom: 1.5rem;
}

th, td {
    text-align: left;
    padding: 0.55rem 0.75rem;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
}

thead th {
    background: var(--surface);
    border-bottom: 2px solid var(--ink-soft);
}

/* ---------- Footer ---------- */

.site-footer {
    margin-top: 3rem;
    border-top: 1px solid var(--line);
    background: var(--surface);
}

.site-footer__inner {
    padding-block: 1.75rem;
    font-size: 0.95rem;
    color: var(--ink-soft);
}

.site-footer__meta { margin-bottom: 0; }