/* ==========================================================================
   URSONATE 原始奏鳴曲 — 第一屆台灣國際即興音樂節 (1st TIIMF), 2015–2016
   Rebuilt from the original Weebly "Paris" theme as plain HTML/CSS/JS.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fjalla+One&family=Lato:wght@400;700&family=Noto+Sans+TC:wght@400;500;700&display=swap');

/* --- Tokens ------------------------------------------------------------- */
:root {
  --accent: #ffc800;
  --accent-dark: #e6b400;
  --ink: #666;
  --ink-strong: #3b3b3b;
  --shell-bg: #222121;
  --paper: #fff;
  --line: #b2b2ad;
  --btn: #cccbc6;
  --btn-hover: #b2b2ad;

  --display: 'Fjalla One', 'Noto Sans TC', 'Microsoft JhengHei', sans-serif;
  --body: 'Lato', 'Noto Sans TC', -apple-system, 'Segoe UI',
          'Microsoft JhengHei', sans-serif;

  --shell: 960px;
  --header-h: 65px;
  --ease: 300ms ease;
}

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

body {
  margin: 0;
  background: var(--shell-bg);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; border: 0; }
figure { margin: 0 0 10px; }
figure.img-right { text-align: right; }
figure.img-left  { text-align: left; }
/* Weebly's "medium" image border. */
figure.img-framed img { padding: 3px; border: 1px solid rgba(0, 0, 0, .13); }
figcaption { padding-top: 6px; font-size: 90%; text-align: center; }

/* Weebly's explicit vertical spacers; the height rides on the element. */
.spacer { width: 100%; }

hr { height: 0; margin: 30px 0; border: 0; border-top: 1px solid #e3e3e0; }

a { color: var(--accent); text-decoration: none; transition: color 500ms ease; }
a:hover { color: var(--accent-dark); }

h1, h2, .h2-like {
  margin: 0 0 15px;
  padding-bottom: 15px;
  color: var(--ink-strong);
  font-family: var(--display);
  font-size: 36px;
  font-weight: normal;
  line-height: 1.2;
}
h3 { font-family: var(--display); font-size: 24px; font-weight: normal; }

/* Weebly authors wrote body copy inside <h2>. `.h2-like` keeps that look on a
   <p> so the heading outline stays honest. */
.h2-like { font-family: var(--body); font-size: 16px; line-height: 1.5; color: var(--ink); }

p { margin: 0 0 20px; line-height: 1.5; }

/* The theme's container is a flat 960px with vertical padding only; the 20px
   gutter appears at the 992px breakpoint below. */
.shell { width: 100%; max-width: var(--shell); margin: 0 auto; }
.ta-center { text-align: center; }
.ta-right   { text-align: right; }
.ta-justify { text-align: justify; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}

/* --- Header ------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 12;
  width: 100%;
  background: rgba(0, 0, 0, .9);
  border-top: 5px solid var(--accent);
}
.site-header .shell {
  display: flex;
  align-items: center;
  gap: 25px;
  max-width: none;
  padding: 0 40px;
}

.brand {
  color: #fff;
  letter-spacing: .05em;
  text-transform: uppercase;
  font-family: var(--display);
  font-size: 24px;
  line-height: 1.1;
}
.brand:hover { color: #fff; }

.nav { margin-left: auto; }
.nav ul { display: flex; margin: 0; padding: 0; list-style: none; }
.nav a {
  display: block;
  padding: 22px 20px;
  color: #fff;
  letter-spacing: .05em;
  text-transform: uppercase;
  font-size: 13px;
  font-weight: 700;
  line-height: normal;
  transition: background 500ms ease;
}
.nav a:hover,
.nav [aria-current='page'] { background: var(--accent); color: #fff; }

.nav-toggle { display: none; }
.nav-toggle-label { display: none; }

/* --- Banner ------------------------------------------------------------- */
.banner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 55px 0;
  /* Height comes from the content, exactly as the theme does it; the two pages
     that pin a height and each page's focal point arrive as inline styles. */
  background: #fff 50% 50% / cover no-repeat;
  text-align: center;
}
.banner::before {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .1);
  content: '';
}
/* 40px vertical matches the theme's .container inside the header section. */
.banner-inner { position: relative; z-index: 1; width: 100%; padding: 40px 20px; }

.banner h1,
.banner h2 {
  margin: 0 0 30px;
  padding: 0;
  color: #fff;
  word-spacing: .1em;
  text-transform: uppercase;
  font-family: var(--display);
  font-size: 65px;
  line-height: 1.1;
}
.banner p {
  margin: 0 0 40px;
  color: #fff;
  letter-spacing: .03em;
  text-transform: uppercase;
  font-size: 24px;
  line-height: 1.4;
}
.banner .btn { margin-bottom: 0; }

/* The home page banner fills the viewport and gets the scroll cue. */
.banner-hero { min-height: calc(100vh - var(--header-h)); }
.banner-hero h1 { font-size: 100px; }

.scroll-cue {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 55px;
  z-index: 2;
  display: block;
  width: 40px;
  height: 40px;
  margin: 0 auto;
  padding: 0;
  background: none;
  border: 3px solid #fff;
  border-radius: 100%;
  opacity: .5;
  cursor: pointer;
  transition: opacity 500ms ease;
}
.scroll-cue:hover,
.scroll-cue:focus-visible { opacity: 1; }
.scroll-cue::before,
.scroll-cue::after {
  position: absolute;
  display: block;
  width: 4px;
  height: 16px;
  background: #fff;
  content: '';
}
.scroll-cue::before { top: 8px; left: 12px; transform: rotate(-45deg); }
.scroll-cue::after  { top: 8px; left: 21px; transform: rotate(45deg); }

/* --- Main --------------------------------------------------------------- */
.main { background: var(--paper); padding: 40px 0; }
.main > .shell > *:last-child { margin-bottom: 0; }

/* --- Columns ------------------------------------------------------------ */
/* Weebly's multicolumn rows are tables whose cells carry `--col-pad` of inner
   padding. A flex row with twice that as the gap lands within a couple of
   pixels of the original's auto-table widths on every row. */
.cols {
  --col-pad: 15px;
  display: flex;
  flex-wrap: nowrap;
  gap: 0 calc(2 * var(--col-pad));
  margin-bottom: 20px;
}
.cols > .col { flex: 1 1 auto; min-width: 0; }

/* --- Buttons ------------------------------------------------------------ */
.btn {
  display: inline-block;
  margin-bottom: 20px;
  padding: 12px 16px;
  background: var(--btn);
  color: #333;
  border-radius: 4px;
  letter-spacing: .1em;
  text-transform: uppercase;
  font-family: var(--body);
  font-size: 14px;
  font-weight: 700;
  line-height: normal;
  transition: all 500ms ease;
}
.btn:hover { background: var(--btn-hover); color: #333; }
.btn-lg { padding: 16px 24px; border-radius: 6px; font-size: 16px; }
.btn-sm { padding: 10px 14px; font-size: 13px; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); color: #fff; }
.banner .btn { background: var(--accent); color: #fff; }
.banner .btn:hover { background: var(--accent-dark); }

/* --- Social ------------------------------------------------------------- */
.social { display: inline-flex; gap: 10px; }
.social a {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--ink-strong);
  color: #fff;
  font-size: 15px;
  transition: background var(--ease);
}
.social a:hover { background: var(--accent); color: #fff; }
.social a::before { font-family: var(--body); font-weight: 700; }
.social-facebook::before { content: 'f'; }
.social-mail::before { content: '\2709'; font-size: 17px; }
.social-twitter::before { content: 't'; }

/* --- Artist gallery ----------------------------------------------------- */
/* Weebly floated these three-up at 33.28% with a 5px margin on every tile. */
.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 0 0 20px;
  padding: 5px;
  list-style: none;
}
.gallery-item {
  position: relative;
  display: block;
  aspect-ratio: 1;
  overflow: hidden;
  background: #000;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms ease;
}
.gallery-item::after {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .2);
  content: '';
  transition: background var(--ease);
}
.gallery-item:hover::after,
.gallery-item:focus-visible::after { background: rgba(230, 180, 0, .8); }
.gallery-item:hover img { transform: scale(1.04); }
.gallery-caption {
  position: absolute;
  z-index: 2;
  right: 0;
  bottom: 0;
  left: 0;
  padding: 10px;
  color: #fff;
  text-align: center;
  font-size: 14px;
  line-height: 1.35;
}

/* --- Slideshow ---------------------------------------------------------- */
.slideshow { margin-bottom: 20px; }
.slideshow-stage {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: #111;
}
.slideshow-stage img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
  transition: opacity 500ms ease;
}
.slideshow-stage img.is-active { opacity: 1; }

.slideshow-btn {
  position: absolute;
  top: 50%;
  z-index: 2;
  width: 44px;
  height: 44px;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, .45);
  color: #fff;
  border: 0;
  cursor: pointer;
  font-size: 22px;
  line-height: 1;
  transition: background var(--ease);
}
.slideshow-btn:hover { background: var(--accent); }
.slideshow-prev { left: 0; }
.slideshow-next { right: 0; }

.slideshow-thumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
}
.slideshow-thumbs button {
  width: 56px;
  height: 42px;
  padding: 0;
  border: 2px solid transparent;
  background: none;
  cursor: pointer;
}
.slideshow-thumbs img { width: 100%; height: 100%; object-fit: cover; display: block; }
.slideshow-thumbs [aria-current='true'] { border-color: var(--accent); }

.slideshow-caption { padding-top: 8px; font-size: 14px; text-align: center; }

/* --- Lightbox ----------------------------------------------------------- */
/* Scoped to [open]: an unscoped `display` here would beat the UA's
   `dialog:not([open]) { display: none }` and leave the closed dialog covering
   the page. */
.lightbox[open] {
  display: grid;
}
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 50;
  place-items: center;
  padding: 40px 60px;
  background: rgba(0, 0, 0, .9);
  border: 0;
}
.lightbox::backdrop { background: rgba(0, 0, 0, .9); }
.lightbox img { max-width: 100%; max-height: 80vh; object-fit: contain; }
.lightbox-caption {
  padding-top: 14px;
  color: #fff;
  text-align: center;
  font-size: 15px;
  line-height: 1.4;
}
.lightbox-close,
.lightbox-nav {
  position: absolute;
  background: none;
  border: 0;
  color: #fff;
  cursor: pointer;
  font-size: 45px;
  line-height: .75;
  transition: color var(--ease);
}
.lightbox-close:hover,
.lightbox-nav:hover { color: var(--accent); }
.lightbox-close { top: 20px; right: 20px; }
.lightbox-nav { top: 50%; transform: translateY(-50%); }
.lightbox-prev { left: 10px; }
.lightbox-next { right: 10px; }

/* --- Video -------------------------------------------------------------- */
.video { margin: 10px 0 20px; }
.video iframe { display: block; width: 100%; aspect-ratio: 16 / 9; border: 0; }

/* --- Contact / subscribe ------------------------------------------------ */
.mailto-block {
  margin-bottom: 20px;
  padding: 20px;
  background: #faf9f6;
  border: 1px solid #e3e3e0;
}
.mailto-block p { margin-bottom: 12px; font-size: 15px; }
.mailto-block .btn { margin-bottom: 0; }

/* Subscribe field — the label, input and button sizing follow the original
   form; submitting hands the address to the visitor's mail client. */
.field-label {
  display: block;
  margin-bottom: 4px;
  color: var(--ink-strong);
  font-size: 15px;
}
.req { color: #da4444; }
.field-input {
  width: 100%;
  max-width: 370px;
  margin-bottom: 10px;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0;
  font-family: var(--body);
  font-size: 15px;
  transition: border-color var(--ease);
}
.field-input:focus { border-color: var(--accent); outline: none; }
.subscribe .btn { margin-bottom: 0; border: 0; cursor: pointer; font-family: var(--body); }
.subscribe-note { margin: 10px 0 0; font-size: 13px; }

/* --- Footer ------------------------------------------------------------- */
.site-footer {
  width: 100%;
  padding: 35px 0 25px;
  background: var(--shell-bg);
  color: #fff;
  font-size: 13px;
}
.site-footer p { margin-bottom: 8px; }
.site-footer a { color: var(--accent); }
.site-footer a:hover { color: var(--accent-dark); }

/* --- Responsive --------------------------------------------------------- */
@media (max-width: 1200px) {
  .banner h1, .banner h2 { font-size: 80px; }
  .banner-hero h1 { font-size: 80px; }
}

@media (max-width: 992px) {
  /* The theme's small-screen header: 5px accent border over a 51px bar, the
     hamburger on the left of the logo, and the menu as a full-width overlay
     of centred accent-coloured links. */
  :root { --header-h: 56px; }

  .shell { padding: 0 20px; }
  .site-header .shell { padding: 10px 0; gap: 11px; }

  .nav-toggle-label {
    display: block;
    position: relative;
    order: -1;          /* hamburger sits before the logo, as on the original */
    flex: 0 0 auto;
    width: 50px;        /* the original's hamburger cell */
    height: 31px;
    cursor: pointer;
  }
  .nav-toggle-label span,
  .nav-toggle-label span::before,
  .nav-toggle-label span::after {
    position: absolute;
    display: block;
    width: 22px;
    height: 2px;
    background: #fff;
    content: '';
    transition: all var(--ease);
  }
  .nav-toggle-label span { top: 15px; left: 14px; }
  .nav-toggle-label span::before { top: -8px; }
  .nav-toggle-label span::after  { top: 8px; }

  .nav {
    position: fixed;
    top: 56px;
    left: 0;
    width: 100%;
    max-height: 0;
    overflow: hidden;
    margin-left: 0;
    padding: 0;
    background: rgba(0, 0, 0, .9);
    opacity: 0;
    transition: all 400ms ease;
  }
  .nav ul { display: block; }
  .nav a {
    padding: 10px 0;
    color: var(--accent);
    text-align: center;
    font-size: 15px;
  }
  /* No highlight bar on small screens — the original leaves every link,
     including the current page's, in the accent colour. */
  .nav a:hover,
  .nav [aria-current='page'] { background: none; color: var(--accent); }

  .nav-toggle:checked ~ .nav {
    max-height: calc(100vh - 56px);
    padding: 10px 0;
    opacity: 1;
    overflow-y: auto;
  }
  .nav-toggle:checked ~ .nav-toggle-label span { background: transparent; }
  .nav-toggle:checked ~ .nav-toggle-label span::before { top: 0; transform: rotate(45deg); }
  .nav-toggle:checked ~ .nav-toggle-label span::after  { top: 0; transform: rotate(-45deg); }

  .banner { min-height: 340px; }
  .banner h1, .banner h2,
  .banner-hero h1 { font-size: 52px; }
  .banner p { font-size: 19px; }

  .cols { display: block; }
  .cols > .col { width: auto !important; flex-basis: auto !important; margin-bottom: 25px; }
  .cols > .col:last-child { margin-bottom: 0; }

  figure.img-right, figure.img-left { text-align: center; }
}

@media (max-width: 600px) {
  .banner-hero { min-height: calc(100vh - var(--header-h)); }
  .banner h1, .banner h2,
  .banner-hero h1 { font-size: 34px; }
  .banner p { font-size: 16px; }
  h1, h2, .h2-like { font-size: 26px; }
  /* The original keeps the logo at 24px right down to phone widths. */
  .lightbox { padding: 20px 12px; }
  .lightbox-nav { font-size: 32px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

@media print {
  .site-header, .scroll-cue, .site-footer, .slideshow-btn { display: none; }
  body { background: #fff; }
}