/* CasaFiesta.party — design system
   Colours, type, space, and radii live in :root.
   No third-party fonts or trackers.
*/

:root {
  --color-bg: #0c0b0d;
  --color-bg-elevated: #141218;
  --color-bg-card: #1a171d;
  --color-bg-soft: #211c24;
  --color-ivory: #f4efe6;
  --color-ivory-muted: #c9c0b3;
  --color-ivory-dim: #8f877c;
  --color-burgundy: #6b2d3c;
  --color-burgundy-bright: #8e3d4e;
  --color-gold: #c4a574;
  --color-gold-soft: #d4bc94;
  --color-border: rgba(196, 165, 116, 0.2);
  --color-border-strong: rgba(196, 165, 116, 0.45);
  --color-overlay: rgba(8, 7, 10, 0.78);
  --color-error: #e8b4b8;
  --color-error-bg: rgba(110, 40, 48, 0.35);
  --color-success: #c5d5c0;
  --color-focus: #d4bc94;
  --font-serif: "Palatino Linotype", Palatino, "Book Antiqua", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --font-sans: "Avenir Next", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  --text-xs: 0.8125rem;
  --text-sm: 0.9375rem;
  --text-md: 1.0625rem;
  --text-lg: 1.25rem;
  --text-xl: 1.75rem;
  --text-2xl: 2.5rem;
  --text-3xl: 3.25rem;
  --text-4xl: clamp(2.25rem, 5vw, 4rem);
  --leading-tight: 1.15;
  --leading-snug: 1.35;
  --leading-body: 1.7;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;
  --space-9: 6.5rem;
  --radius-sm: 4px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 999px;
  --shadow-soft: 0 18px 50px rgba(0, 0, 0, 0.35);
  --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.28);
  --max-width: 72rem;
  --max-narrow: 46rem;
  --header-height: 4.75rem;
  --transition: 180ms ease;
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-ivory);
  font-family: var(--font-sans);
  font-size: 100%;
  line-height: var(--leading-body);
}

body.no-scroll,
body.nav-open {
  overflow: hidden;
}

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

a {
  color: var(--color-gold);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--color-gold-soft);
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100%;
  z-index: 1000;
  background: var(--color-gold);
  color: var(--color-bg);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.skip-link:focus {
  top: var(--space-3);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.wrap {
  width: min(100% - var(--space-6), var(--max-width));
  margin-inline: auto;
}

.wrap-narrow {
  width: min(100% - var(--space-6), var(--max-narrow));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: linear-gradient(180deg, rgba(12, 11, 13, 0.96), rgba(12, 11, 13, 0.88));
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(10px);
  transition: box-shadow var(--transition);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-card);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: var(--header-height);
  width: min(100% - var(--space-5), var(--max-width));
  margin-inline: auto;
}

.wordmark {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--color-ivory);
  text-decoration: none;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.wordmark span {
  color: var(--color-gold);
  font-family: var(--font-sans);
  font-size: 0.92em;
}

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-ivory);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle-bars {
  display: block;
  width: 1.1rem;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.85rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  color: var(--color-ivory-muted);
  text-decoration: none;
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-ivory);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 2.75rem;
  padding: 0.55rem 1.25rem;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  font-family: inherit;
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-invite,
.btn-primary {
  background: linear-gradient(180deg, var(--color-burgundy-bright), var(--color-burgundy));
  color: var(--color-ivory);
  border-color: rgba(244, 239, 230, 0.08);
}

.btn-invite:hover,
.btn-primary:hover {
  color: var(--color-ivory);
  background: linear-gradient(180deg, #a4495c, var(--color-burgundy-bright));
}

.btn-secondary {
  background: transparent;
  color: var(--color-gold);
  border-color: var(--color-border-strong);
}

.btn-ghost {
  background: transparent;
  color: var(--color-ivory);
  border-color: var(--color-border);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

/* Hero */
.hero {
  position: relative;
  isolation: isolate;
  padding: var(--space-9) 0 var(--space-8);
  background:
    radial-gradient(ellipse at top right, rgba(107, 45, 60, 0.28), transparent 50%),
    radial-gradient(ellipse at bottom left, rgba(196, 165, 116, 0.08), transparent 45%),
    var(--color-bg);
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.28;
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12, 11, 13, 0.35), var(--color-bg) 92%);
}

.eyebrow {
  display: inline-block;
  color: var(--color-gold);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  margin-bottom: var(--space-4);
}

h1,
h2,
h3,
.hero h1 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: var(--leading-tight);
  letter-spacing: 0.01em;
}

h1 {
  font-size: var(--text-4xl);
  margin: 0 0 var(--space-5);
}

h2 {
  font-size: var(--text-2xl);
  margin: 0 0 var(--space-4);
}

h3 {
  font-size: var(--text-xl);
  margin: 0 0 var(--space-3);
}

.lede,
.placeholder {
  color: var(--color-ivory-muted);
  font-size: var(--text-lg);
  max-width: 40rem;
}

.placeholder,
.placeholder-block {
  font-style: italic;
}

.placeholder-block {
  margin: 0;
  color: var(--color-ivory-muted);
}

/* Sections */
.section {
  padding: var(--space-8) 0;
}

.section-alt {
  background: var(--color-bg-elevated);
}

.section-header {
  max-width: 40rem;
  margin-bottom: var(--space-6);
}

.kicker {
  color: var(--color-gold);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin: 0 0 var(--space-3);
}

/* Cards */
.grid {
  display: grid;
  gap: var(--space-5);
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
}

.card .media-frame {
  margin-bottom: var(--space-4);
}

.card-quiet {
  background: transparent;
  box-shadow: none;
}

.media-frame {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Breadcrumbs */
.breadcrumbs {
  padding: var(--space-4) 0 0;
  font-size: var(--text-xs);
  color: var(--color-ivory-dim);
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin-left: var(--space-2);
  color: var(--color-ivory-dim);
}

.breadcrumbs a {
  color: var(--color-ivory-muted);
  text-decoration: none;
}

/* Notices */
.notice,
.policy-notice,
.consent-banner {
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-gold);
  background: var(--color-bg-soft);
  padding: var(--space-5);
  border-radius: var(--radius-sm);
}

.consent-banner {
  border-left-color: var(--color-burgundy-bright);
}

.adults-notice {
  font-size: var(--text-sm);
  color: var(--color-ivory-muted);
}

/* CTA */
.cta-block {
  text-align: center;
  padding: var(--space-8) var(--space-5);
  background:
    radial-gradient(circle at center, rgba(107, 45, 60, 0.28), transparent 62%),
    var(--color-bg-elevated);
  border-block: 1px solid var(--color-border);
}

.cta-block .lede {
  margin-inline: auto;
}

/* Event cards */
.event-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.filter-btn {
  background: transparent;
  color: var(--color-ivory-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 0.4rem 0.9rem;
  cursor: pointer;
  font: inherit;
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.filter-btn[aria-pressed="true"],
.filter-btn:hover {
  color: var(--color-ivory);
  border-color: var(--color-gold);
}

.event-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.event-meta {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
}

.event-meta div {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-2);
  font-size: var(--text-sm);
}

.event-meta dt {
  color: var(--color-ivory-dim);
}

.event-meta dd {
  margin: 0;
  text-align: right;
}

.empty-state {
  text-align: center;
  padding: var(--space-8) var(--space-5);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
}

/* Steps */
.steps {
  counter-reset: step;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}

.steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-4);
  align-items: start;
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  width: 2.5rem;
  height: 2.5rem;
  display: grid;
  place-items: center;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-gold);
  color: var(--color-gold);
  font-family: var(--font-serif);
}

/* Accordion — details/summary works without JS */
.accordion {
  display: grid;
  gap: var(--space-3);
}

.faq-group {
  margin-bottom: var(--space-7);
}

.accordion details {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
  padding: 0 var(--space-4);
}

.accordion summary {
  cursor: pointer;
  padding: var(--space-4) 0;
  font-weight: 600;
  list-style: none;
}

.accordion summary::-webkit-details-marker {
  display: none;
}

.accordion summary::after {
  content: "+";
  float: right;
  color: var(--color-gold);
  font-weight: 400;
}

.accordion details[open] summary::after {
  content: "–";
}

.accordion .answer {
  padding-bottom: var(--space-4);
  color: var(--color-ivory-muted);
}

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}

.gallery-card {
  padding: 0;
  overflow: hidden;
}

.gallery-card button {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  color: inherit;
}

.gallery-card button:hover .media-frame img {
  transform: scale(1.03);
}

.gallery-card .media-frame img {
  transition: transform 240ms ease;
}

.gallery-card .media-frame {
  border: 0;
  border-radius: 0;
}

.gallery-caption {
  padding: var(--space-3) var(--space-4) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-ivory-muted);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 80;
  background: var(--color-overlay);
  display: none;
  place-items: center;
  padding: var(--space-5);
}

.lightbox.is-open {
  display: grid;
}

.lightbox-inner {
  position: relative;
  width: min(100%, 56rem);
}

.lightbox img {
  width: 100%;
  max-height: 80vh;
  object-fit: contain;
  background: #000;
}

.lightbox-caption {
  color: var(--color-ivory-muted);
  margin-top: var(--space-3);
  text-align: center;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  background: var(--color-bg-card);
  color: var(--color-ivory);
  border: 1px solid var(--color-border);
  cursor: pointer;
}

.lightbox-close {
  top: -2.75rem;
  right: 0;
  min-width: 2.5rem;
  min-height: 2.5rem;
  border-radius: var(--radius-sm);
}

.lightbox-prev,
.lightbox-next {
  top: 50%;
  transform: translateY(-50%);
  min-width: 2.75rem;
  min-height: 2.75rem;
  border-radius: var(--radius-full);
}

.lightbox-prev {
  left: -0.5rem;
}

.lightbox-next {
  right: -0.5rem;
}

/* Forms */
.form {
  display: grid;
  gap: var(--space-4);
}

.form-field {
  display: grid;
  gap: var(--space-2);
}

.form-field label,
.form-check label {
  font-size: var(--text-sm);
}

.req {
  color: var(--color-gold);
}

input,
select,
textarea {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-ivory);
  font: inherit;
}

textarea {
  min-height: 8rem;
  resize: vertical;
}

.form-check {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}

.form-check input {
  width: 1.15rem;
  height: 1.15rem;
  min-height: 0;
  margin-top: 0.3rem;
  flex-shrink: 0;
}

.field-error,
.form-error {
  color: var(--color-error);
  font-size: var(--text-sm);
  margin: 0;
}

.form-field.is-invalid input,
.form-field.is-invalid select,
.form-field.is-invalid textarea {
  border-color: var(--color-error);
  background: var(--color-error-bg);
}

.form-status[aria-busy="true"] .btn {
  opacity: 0.7;
  pointer-events: none;
}

.form-status[aria-busy="true"] .btn::after {
  content: " …";
}

.form-success {
  display: none;
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-card);
}

.form-success.is-visible {
  display: block;
}

.form.is-hidden {
  display: none;
}

/* Age gate */
.age-gate {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: none;
  place-items: center;
  padding: var(--space-5);
  background: var(--color-overlay);
}

.age-gate.is-open {
  display: grid;
}

.age-gate-dialog {
  width: min(100%, 32rem);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-soft);
}

.age-gate-declined {
  display: none;
  text-align: center;
}

.age-gate-declined.is-visible {
  display: block;
}

.age-gate-noscript {
  background: var(--color-burgundy);
  color: var(--color-ivory);
  text-align: center;
  padding: var(--space-3);
  font-size: var(--text-sm);
}

/* Footer */
.site-footer {
  background: #09080a;
  border-top: 1px solid var(--color-border);
  padding: var(--space-8) 0 var(--space-6);
  color: var(--color-ivory-muted);
  font-size: var(--text-sm);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.footer-nav ul,
.social-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-nav a,
.social-list a {
  color: var(--color-ivory-muted);
  text-decoration: none;
}

.footer-bottom {
  display: grid;
  gap: var(--space-3);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-5);
}

.legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.mt-5 {
  margin-top: var(--space-5);
}

.btn-row-center {
  justify-content: center;
}

/* Page intro */
.page-intro {
  padding: var(--space-7) 0 var(--space-5);
}

/* Split */
.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-6);
  align-items: center;
}

/* Header mobile overlay */
.nav-backdrop {
  display: none;
}

@media (max-width: 960px) {
  .grid-3,
  .gallery-grid,
  .footer-grid,
  .split {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 820px) {
  .nav-toggle {
    display: inline-block;
    z-index: 51;
  }

  .site-nav {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(22rem, 88vw);
    background: var(--color-bg-elevated);
    border-left: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    padding: calc(var(--header-height) + var(--space-4)) var(--space-5) var(--space-6);
    transform: translateX(100%);
    transition: transform var(--transition);
    z-index: 50;
  }

  .site-nav.is-open {
    transform: translateX(0);
  }

  .site-nav ul {
    flex-direction: column;
    gap: var(--space-4);
  }

  .site-nav a {
    font-size: var(--text-sm);
  }

  .nav-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: var(--color-overlay);
    border: 0;
    z-index: 45;
    opacity: 0;
    pointer-events: none;
  }

  .nav-backdrop.is-visible {
    opacity: 1;
    pointer-events: auto;
  }
}

@media (max-width: 700px) {
  .grid-2,
  .grid-3,
  .gallery-grid,
  .footer-grid,
  .split {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: var(--space-7) 0 var(--space-6);
  }

  .section {
    padding: var(--space-7) 0;
  }

  .lightbox-prev {
    left: 0;
  }

  .lightbox-next {
    right: 0;
  }
}

@media (max-width: 360px) {
  .header-inner,
  .wrap {
    width: min(100% - var(--space-4), var(--max-width));
  }
}

@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;
  }

  .btn:hover {
    transform: none;
  }
}