/* ==========================================================
   Low Tide Club -- styles-ltc.css
   Base framework + topic styles. Mobile-first.
   ========================================================== */

:root {
  --color-bg: #0f1e2a;          /* deep kelp-night navy */
  --color-text: #eef4f2;        /* foam white -- 15.2:1 on bg */
  --color-muted: #b9cbc8;       /* 9.6:1 on bg */
  --color-accent: #5fd4c4;      /* sea glass -- 9.9:1 on bg */
  --color-accent-hover: #9ae9de;
  --color-coral: #ffa38f;       /* 9.0:1 on bg */
  --color-sand: #f2d79a;        /* 12.1:1 on bg */
  --color-border: #2f4b5c;
  --color-surface: #172b3a;
  --color-surface-2: #1f3747;
  --color-on-accent: #0b1720;   /* text on sea glass -- 10.7:1 */

  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;

  --radius: 0.75rem;
  --max-width: 1200px;
  --sidebar-width: 250px;
  --focus-ring: 3px solid var(--color-sand);
}

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

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.2;
  margin: 0 0 var(--space-md);
  font-weight: 700;
}
h1 { font-size: clamp(2.1rem, 6vw, 3.6rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.6rem, 4vw, 2.3rem); }
h3 { font-size: 1.3rem; }
p { margin: 0 0 var(--space-md); max-width: 68ch; }

.main ul,
.main ol {
  padding-left: 1.6rem;
}
.main li { margin-bottom: var(--space-sm); }

/* ---------- Links + focus ---------- */
a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}
a:hover { color: var(--color-accent-hover); text-decoration-thickness: 0.15em; }

:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: var(--space-md);
  top: -10rem;
  z-index: 100;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-sand);
  color: var(--color-on-accent);
  font-weight: 700;
  border-radius: 0 0 var(--radius) var(--radius);
}
.skip-link:focus { top: 0; }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section { padding: var(--space-xl) 0; }
.section--alt { background: var(--color-surface); }

/* ---------- Header + nav ---------- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}
.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-top: var(--space-md);
  padding-bottom: var(--space-md);
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
}
.brand:hover { color: var(--color-accent-hover); }
.brand img { width: 2.75rem; height: 2.75rem; border-radius: 50%; }

.nav-toggle { display: none; } /* no JS = nav always open, no dead button */
.js .nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  min-height: 2.75rem;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-surface);
  color: var(--color-text);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.nav-toggle:hover { border-color: var(--color-accent); }

.site-nav { width: 100%; }
.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}
.site-nav a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  min-height: 2.75rem;
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius);
  border: 2px solid transparent;
  font-weight: 600;
}
.site-nav a:hover { border-color: var(--color-accent); color: var(--color-accent-hover); }
.site-nav a[aria-current="page"] {
  border-color: var(--color-accent);
  background: var(--color-surface);
}
.site-nav a[aria-current="page"]::before { content: "~ "; color: var(--color-accent); }

/* Collapsed state only applies when JS is running */
.js .site-nav[data-open="false"] { display: none; }

@media (min-width: 48rem) {
  .nav-toggle, .js .nav-toggle { display: none; }
  .site-nav, .js .site-nav[data-open="false"] { display: block; width: auto; }
  .site-nav ul { flex-direction: row; flex-wrap: wrap; }
}

/* ---------- Hero ---------- */
.hero {
  padding: var(--space-xl) 0;
  background:
    radial-gradient(ellipse at 85% 10%, rgba(95, 212, 196, 0.16), transparent 55%),
    radial-gradient(ellipse at 5% 95%, rgba(255, 163, 143, 0.12), transparent 50%),
    var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.eyebrow {
  display: inline-block;
  margin-bottom: var(--space-md);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-sand);
}
.lede { font-size: 1.25rem; color: var(--color-muted); }

.button {
  display: inline-block;
  min-height: 2.75rem;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius);
  background: var(--color-accent);
  color: var(--color-on-accent);
  font-weight: 700;
  text-decoration: none;
  border: 2px solid var(--color-accent);
}
.button:hover { background: var(--color-accent-hover); border-color: var(--color-accent-hover); color: var(--color-on-accent); }
.button--ghost { background: transparent; color: var(--color-accent); }
.button--ghost:hover { background: var(--color-surface-2); color: var(--color-accent-hover); }
.button-row { display: flex; flex-wrap: wrap; gap: var(--space-md); margin-top: var(--space-lg); }

/* ---------- Tide zone ladder ---------- */
.zones {
  list-style: none;
  margin: var(--space-lg) 0 0;
  padding: 0 !important;
  display: grid;
  gap: var(--space-md);
}
.zone {
  position: relative;
  padding: var(--space-lg) var(--space-lg) var(--space-lg) 4.5rem;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.zone-num {
  position: absolute;
  left: var(--space-lg);
  top: var(--space-lg);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-sand);
}
.zone h3 { margin-bottom: var(--space-xs); }
.zone .depth {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-coral);
  margin-bottom: var(--space-sm);
}
.zone p:last-child { margin-bottom: 0; }

/* ---------- Cards / grids ---------- */
.grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}
@media (min-width: 40rem) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 64rem) { .grid--3 { grid-template-columns: repeat(3, 1fr); } }

.card {
  display: flex;
  flex-direction: column;
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.section--alt .card { background: var(--color-bg); }
.card h3 { margin-bottom: var(--space-xs); }
.card .latin {
  font-style: italic;
  color: var(--color-muted);
  margin-bottom: var(--space-md);
}
.card p:last-child { margin-bottom: 0; }

.tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin: 0 0 var(--space-md);
  padding: 0 !important;
}
.tag {
  margin: 0 !important;
  padding: 0.15rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-text);
}
/* Zone tags use a text label AND a leading symbol -- never color alone */
.tag--splash::before { content: "^ "; color: var(--color-sand); }
.tag--high::before   { content: "= "; color: var(--color-sand); }
.tag--mid::before    { content: "~ "; color: var(--color-accent); }
.tag--low::before    { content: "v "; color: var(--color-coral); }
.tag--handle { border-style: dashed; }

.field-tip {
  margin-top: auto;
  padding: var(--space-md);
  border-left: 4px solid var(--color-sand);
  background: var(--color-surface-2);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.975rem;
}
.section--alt .field-tip { background: var(--color-surface); }
.field-tip strong { color: var(--color-sand); }

/* ---------- Filter bar ---------- */
.filter {
  margin: 0 0 var(--space-lg);
  padding: 0;
  border: 0;
}
.filter legend {
  font-weight: 700;
  margin-bottom: var(--space-sm);
  padding: 0;
}
.filter-buttons { display: flex; flex-wrap: wrap; gap: var(--space-sm); }
.filter-btn {
  min-height: 2.75rem;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-surface);
  color: var(--color-text);
  border: 2px solid var(--color-border);
  border-radius: 999px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.filter-btn:hover { border-color: var(--color-accent); }
.filter-btn[aria-pressed="true"] {
  background: var(--color-accent);
  color: var(--color-on-accent);
  border-color: var(--color-accent);
}
.filter-btn[aria-pressed="true"]::before { content: "* "; }
.filter-status {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-top: var(--space-md);
}
[hidden] { display: none !important; }

/* ---------- Rules list (etiquette) ---------- */
.rules {
  counter-reset: rule;
  list-style: none;
  padding: 0 !important;
  display: grid;
  gap: var(--space-md);
}
.rules li {
  counter-increment: rule;
  position: relative;
  margin: 0 !important;
  padding: var(--space-lg) var(--space-lg) var(--space-lg) 4.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.rules li::before {
  content: counter(rule, decimal-leading-zero);
  position: absolute;
  left: var(--space-lg);
  top: var(--space-lg);
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-coral);
}
.rules h3 { margin-bottom: var(--space-sm); }
.rules p:last-child { margin-bottom: 0; }

.callout {
  padding: var(--space-lg);
  border: 2px solid var(--color-coral);
  border-radius: var(--radius);
  background: var(--color-surface);
}
.callout h2, .callout h3 { color: var(--color-coral); }
.callout p:last-child { margin-bottom: 0; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--color-border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; min-width: 32rem; }
caption {
  text-align: left;
  padding: var(--space-md);
  font-weight: 700;
  color: var(--color-sand);
}
th, td { padding: 0.75rem var(--space-md); text-align: left; border-top: 1px solid var(--color-border); vertical-align: top; }
thead th { background: var(--color-surface-2); font-family: var(--font-mono); font-size: 0.9rem; }
tbody th { font-weight: 600; }

/* ---------- Forms ---------- */
.form { display: grid; gap: var(--space-lg); max-width: 40rem; }
.field { display: grid; gap: var(--space-xs); }
.field label { font-weight: 700; }
.field .hint { font-size: 0.925rem; color: var(--color-muted); margin: 0; }
input[type="text"],
input[type="email"],
select,
textarea {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.7rem var(--space-md);
  background: var(--color-surface);
  color: var(--color-text);
  border: 2px solid #5b7889; /* 3.4:1 against bg -- visible field boundary */
  border-radius: var(--radius);
  font: inherit;
}
textarea { min-height: 9rem; resize: vertical; }
input:focus-visible, select:focus-visible, textarea:focus-visible { border-color: var(--color-sand); }
.req { color: var(--color-coral); font-weight: 700; }
.checkbox { display: flex; gap: var(--space-sm); align-items: flex-start; }
.checkbox input { width: 1.4rem; height: 1.4rem; margin-top: 0.2rem; accent-color: var(--color-accent); }
button.button { font: inherit; font-weight: 700; cursor: pointer; }
.hp { position: absolute; left: -9999px; } /* spam honeypot */

.form-message {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius);
  border: 2px solid var(--color-accent);
  background: var(--color-surface);
}
.form-message--error { border-color: var(--color-coral); }

/* ---------- Two column (about/contact) ---------- */
.split { display: grid; gap: var(--space-xl); }
@media (min-width: 56rem) {
  .split { grid-template-columns: 1fr var(--sidebar-width); gap: var(--space-xl); }
  .split--wide-aside { grid-template-columns: 1fr 20rem; }
}
.aside-box {
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  align-self: start;
}
.aside-box h2 { font-size: 1.3rem; }
.aside-box ul { padding-left: 1.2rem; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0 var(--space-lg);
  color: var(--color-muted);
  font-size: 0.95rem;
}
.footer-grid { display: grid; gap: var(--space-lg); }
@media (min-width: 48rem) { .footer-grid { grid-template-columns: 2fr 1fr 1fr; } }
.site-footer h2 { font-size: 1.1rem; color: var(--color-text); font-family: var(--font-body); }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: var(--space-sm); }
.fine-print { margin-top: var(--space-lg); padding-top: var(--space-md); border-top: 1px solid var(--color-border); }

/* ---------- Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---------- Windows High Contrast / forced colors ---------- */
@media (forced-colors: active) {
  .filter-btn[aria-pressed="true"] { border: 3px solid Highlight; }
  .site-nav a[aria-current="page"] { border: 2px solid Highlight; }
}