/* =============================================================================
   styles.css — The Valley's Collectors Expo
   Dark vintage theme | Cinzel headings + Lato body | Mobile-first
   ============================================================================= */

/* -----------------------------------------------------------------------------
   1. CUSTOM PROPERTIES
   ----------------------------------------------------------------------------- */
:root {
  /* Palette */
  --clr-bg:      #0f0e0d;
  --clr-surface: #1c1814;
  --clr-gold:    #c9a227;
  --clr-crimson: #8b1a1a;
  --clr-text:    #e8d9c0;
  --clr-muted:   #9e8e78;
  --clr-success: #4caf50;
  --clr-error:   #cf6679;

  /* Typography */
  --font-display: 'Cinzel', Georgia, serif;
  --font-body:    'Lato', system-ui, sans-serif;
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;

  /* Layout */
  --nav-height:    64px;
  --max-width:     1100px;
  --section-pad-y: clamp(3rem, 8vw, 5rem);
  --section-pad-x: clamp(1rem, 5vw, 2rem);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
}

/* -----------------------------------------------------------------------------
   2. CSS RESET
   ----------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  background-color: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  min-width: 320px;
  overflow-x: hidden;
}

img, picture, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
}

a {
  color: var(--clr-gold);
  text-decoration: none;
}

a:hover, a:focus-visible {
  text-decoration: underline;
}

ul[role="list"],
ol[role="list"] {
  list-style: none;
}

/* Scroll offset so sticky nav doesn't cover anchor targets */
section[id], footer[id] {
  scroll-margin-top: var(--nav-height);
}

/* -----------------------------------------------------------------------------
   3. UTILITIES
   ----------------------------------------------------------------------------- */
.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;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--section-pad-x);
}

.section {
  padding-block: var(--section-pad-y);
}

.section__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  color: var(--clr-gold);
  text-align: center;
  margin-bottom: 2.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Focus ring — visible for keyboard users */
:focus-visible {
  outline: 2px solid var(--clr-gold);
  outline-offset: 3px;
}

/* -----------------------------------------------------------------------------
   4. NAVIGATION (T008 / T009)
   ----------------------------------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background-color: var(--clr-surface);
  border-bottom: 1px solid rgba(201, 162, 39, 0.2);
  display: flex;
  align-items: center;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--section-pad-x);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
}

.nav__logo-img {
  height: 40px;
  width: auto;
}

.nav__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--clr-gold);
  letter-spacing: 0.05em;
  line-height: 1.2;
}

/* Desktop nav links */
.nav__links {
  display: flex;
  gap: 1.75rem;
  list-style: none;
}

.nav__links a {
  font-size: var(--text-sm);
  color: var(--clr-text);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: color var(--transition-fast);
  text-decoration: none;
}

.nav__links a:hover,
.nav__links a:focus-visible {
  color: var(--clr-gold);
  text-decoration: none;
}

/* Hamburger button — mobile only */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  color: var(--clr-text);
}

.nav__hamburger-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: currentColor;
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
  transform-origin: center;
}

/* Hamburger open state */
.nav--open .nav__hamburger-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav--open .nav__hamburger-bar:nth-child(2) { opacity: 0; }
.nav--open .nav__hamburger-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 767px) {
  .nav__hamburger {
    display: flex;
  }

  .nav__links {
    position: fixed;
    inset: var(--nav-height) 0 0 0;
    background-color: var(--clr-surface);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 2rem;
    gap: 2rem;
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: 99;
  }

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

  .nav__links a {
    font-size: var(--text-lg);
  }
}

/* -----------------------------------------------------------------------------
   5. BUTTONS
   ----------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.625rem 1.5rem;
  border-radius: 3px;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.btn--primary {
  background-color: var(--clr-gold);
  color: var(--clr-bg);
  border-color: var(--clr-gold);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background-color: #b8911f;
  border-color: #b8911f;
  color: var(--clr-bg);
  text-decoration: none;
}

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

.btn--secondary:hover,
.btn--secondary:focus-visible {
  background-color: var(--clr-gold);
  color: var(--clr-bg);
  text-decoration: none;
}

.btn--crimson {
  background-color: var(--clr-crimson);
  color: var(--clr-text);
  border-color: var(--clr-crimson);
}

.btn--crimson:hover,
.btn--crimson:focus-visible {
  background-color: #a82020;
  border-color: #a82020;
  color: var(--clr-text);
  text-decoration: none;
}

/* -----------------------------------------------------------------------------
   6. HERO (T013)
   ----------------------------------------------------------------------------- */
.hero {
  min-height: calc(100svh - var(--nav-height));
  display: flex;
  align-items: center;
  background-color: var(--clr-bg);
  background-image:
    radial-gradient(ellipse at 20% 50%, rgba(139, 26, 26, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 30%, rgba(201, 162, 39, 0.08) 0%, transparent 55%);
  padding-block: 3rem;
}

.hero__inner {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--section-pad-x);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
}

.hero__eyebrow {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--clr-gold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 7vw, var(--text-5xl));
  color: var(--clr-text);
  line-height: 1.1;
  letter-spacing: 0.03em;
  text-wrap: balance;
}

.hero__tagline {
  font-size: var(--text-xl);
  color: var(--clr-gold);
  letter-spacing: 0.15em;
}

.hero__details {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1.5rem;
  font-size: var(--text-base);
  color: var(--clr-text);
}

.hero__detail {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.hero__detail-label {
  color: var(--clr-muted);
  font-size: var(--text-sm);
}

.hero__badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}

.badge-chip {
  display: inline-block;
  padding: 0.3rem 0.875rem;
  border: 1px solid var(--clr-gold);
  border-radius: 2px;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--clr-gold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background-color: rgba(201, 162, 39, 0.08);
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: 0.5rem;
}

/* -----------------------------------------------------------------------------
   7. CATEGORIES (T024)
   ----------------------------------------------------------------------------- */
.categories {
  background-color: var(--clr-surface);
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1.25rem;
}

.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1.25rem 0.75rem;
  background-color: var(--clr-bg);
  border: 1px solid rgba(201, 162, 39, 0.3);
  border-radius: 4px;
  cursor: default;
  transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
  user-select: none;
}

.category-card:hover,
.category-card:focus-within {
  transform: scale(1.05);
  box-shadow: 0 0 14px rgba(201, 162, 39, 0.35);
  border-color: var(--clr-gold);
}

.category-card__icon {
  width: 52px;
  height: 52px;
  object-fit: contain;
}

.category-card__label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  color: var(--clr-text);
  text-align: center;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  line-height: 1.3;
}

/* -----------------------------------------------------------------------------
   8. SCHEDULE (T028 / T029)
   ----------------------------------------------------------------------------- */
.schedule {
  background-color: var(--clr-bg);
}

.timeline {
  position: relative;
  max-width: 640px;
  margin-inline: auto;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0.5rem;
  top: 0.5rem;
  bottom: 0.5rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--clr-gold), rgba(201, 162, 39, 0.2));
}

.timeline-item {
  position: relative;
  padding: 0 0 2rem 1.5rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -0.5rem;
  top: 0.4rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--clr-surface);
  border: 2px solid var(--clr-muted);
}

.timeline-item--highlight::before {
  border-color: var(--clr-gold);
  background-color: var(--clr-gold);
}

.timeline-item__time {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--clr-muted);
  letter-spacing: 0.05em;
}

.timeline-item--highlight .timeline-item__time {
  color: var(--clr-gold);
}

.timeline-item__label {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--clr-text);
  margin-top: 0.125rem;
}

.timeline-item--highlight .timeline-item__label {
  color: var(--clr-gold);
}

.timeline-item__desc {
  font-size: var(--text-sm);
  color: var(--clr-muted);
  margin-top: 0.25rem;
}

/* -----------------------------------------------------------------------------
   9. ATTENDEE INFO (T028)
   ----------------------------------------------------------------------------- */
.info {
  background-color: var(--clr-surface);
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .info-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.info-card {
  background-color: var(--clr-bg);
  border: 1px solid rgba(201, 162, 39, 0.2);
  border-radius: 4px;
  padding: 1.5rem;
}

.info-card__title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--clr-gold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.info-card__text {
  font-size: var(--text-sm);
  color: var(--clr-text);
  line-height: 1.65;
}

.info-card__list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.info-card__list li::before {
  content: '\2014\0020';
  color: var(--clr-gold);
}

/* -----------------------------------------------------------------------------
   10. MAP (T031)
   ----------------------------------------------------------------------------- */
.map {
  background-color: var(--clr-bg);
}

.map__wrapper {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 */
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid rgba(201, 162, 39, 0.2);
}

.map__iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  pointer-events: none;
}

.map__wrapper.is-active .map__iframe {
  pointer-events: auto;
}

.map__overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.map__overlay-hint {
  background: rgba(15, 14, 13, 0.75);
  color: var(--clr-gold);
  font-size: var(--text-sm);
  padding: 0.5em 1.25em;
  border-radius: 4px;
  border: 1px solid rgba(201, 162, 39, 0.35);
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

.map__overlay:hover .map__overlay-hint {
  opacity: 1;
}

.map__wrapper.is-active .map__overlay {
  display: none;
}

.map__footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.25rem;
}

.map__address {
  font-style: normal;
  font-size: var(--text-sm);
  color: var(--clr-muted);
}

/* -----------------------------------------------------------------------------
   11. CONTACT / FORM (T017 / T021)
   ----------------------------------------------------------------------------- */
.contact {
  background-color: var(--clr-surface);
}

/* Tab bar */
.tab-list {
  display: flex;
  gap: 0;
  border-bottom: 2px solid rgba(201, 162, 39, 0.2);
  margin-bottom: 2rem;
  list-style: none;
}

.tab-btn {
  flex: 1;
  padding: 0.75rem 1rem;
  min-height: 44px;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--clr-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.tab-btn[aria-selected="true"] {
  color: var(--clr-gold);
  border-bottom-color: var(--clr-gold);
}

.tab-btn:hover {
  color: var(--clr-text);
}

/* Tab panels */
.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

/* Form layout */
.form__group {
  margin-bottom: 1.25rem;
}

.form__label {
  display: block;
  font-size: var(--text-sm);
  color: var(--clr-text);
  margin-bottom: 0.375rem;
  letter-spacing: 0.02em;
}

.form__label--optional {
  color: var(--clr-muted);
  font-size: var(--text-xs);
  margin-left: 0.375rem;
}

.form__input,
.form__textarea,
.form__select {
  width: 100%;
  padding: 0.625rem 0.875rem;
  background-color: var(--clr-bg);
  border: 1px solid rgba(201, 162, 39, 0.3);
  border-radius: 3px;
  color: var(--clr-text);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast);
  min-height: 44px;
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
  outline: none;
  border-color: var(--clr-gold);
}

.form__input:invalid:not(:placeholder-shown),
.form__textarea:invalid:not(:placeholder-shown) {
  border-color: var(--clr-error);
}

.form__textarea {
  min-height: 120px;
  resize: vertical;
}

.form__submit {
  width: 100%;
  margin-top: 0.5rem;
}

.form__submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Inline messages */
.form-message {
  display: none;
  padding: 0.875rem 1rem;
  border-radius: 3px;
  font-size: var(--text-sm);
  margin-top: 1rem;
}

.form-message--success {
  background-color: rgba(76, 175, 80, 0.12);
  border: 1px solid var(--clr-success);
  color: var(--clr-success);
}

.form-message--error {
  background-color: rgba(207, 102, 121, 0.12);
  border: 1px solid var(--clr-error);
  color: var(--clr-error);
}

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

/* -----------------------------------------------------------------------------
   12. FOOTER (T033)
   ----------------------------------------------------------------------------- */
.footer {
  background-color: var(--clr-surface);
  border-top: 1px solid rgba(201, 162, 39, 0.15);
  padding-block: 2rem;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--section-pad-x);
}

.footer__copy {
  font-size: var(--text-sm);
  color: var(--clr-muted);
}

.footer__links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.footer__links a {
  font-size: var(--text-sm);
  color: var(--clr-muted);
  transition: color var(--transition-fast);
}

.footer__links a:hover,
.footer__links a:focus-visible {
  color: var(--clr-gold);
  text-decoration: none;
}

.footer__webmaster {
  font-size: var(--text-sm);
  color: var(--clr-muted);
  margin-top: 0.75rem;
  width: 100%;
  text-align: center;
}

.footer__webmaster a {
  color: var(--clr-muted);
  transition: color var(--transition-fast);
}

.footer__webmaster a:hover,
.footer__webmaster a:focus-visible {
  color: var(--clr-gold);
  text-decoration: none;
}

/* -----------------------------------------------------------------------------
   13. SECTION ALTERNATING BACKGROUNDS (visual rhythm)
   ----------------------------------------------------------------------------- */
.section--alt {
  background-color: var(--clr-surface);
}

/* -----------------------------------------------------------------------------
   13b. PROMO POSTER
   ----------------------------------------------------------------------------- */
.promo__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.promo__poster {
  display: block;
  max-width: 480px;
  width: 100%;
  border-radius: 10px;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.6);
}

.promo__cta {
  display: inline-block;
}

/* -----------------------------------------------------------------------------
   14. RESPONSIVE HELPERS
   ----------------------------------------------------------------------------- */
@media (max-width: 639px) {
  .hero__ctas {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__ctas .btn {
    text-align: center;
  }
}