/* ============================================================
   MartaFest 2026 — Main Stylesheet
   Modern CSS: Custom Properties · Flexbox · Grid
   ============================================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Palette */
  --clr-navy:      #1a3a5c;
  --clr-blue:      #2e5fa3;
  --clr-blue-mid:  #4a7fc1;
  --clr-sky:       #c8d8e8;
  --clr-accent:    #e8f0fa;
  --clr-gold:      #c9a84c;
  --clr-text:      #1c2533;
  --clr-muted:     #5a6a7a;
  --clr-white:     #ffffff;
  --clr-off-white: #f6f8fb;
  --clr-border:    #d4dde8;

  /* Typography */
  --font-serif: 'EB Garamond', Georgia, 'Times New Roman', serif;
  --font-sans:  'Inter', system-ui, -apple-system, sans-serif;

  /* Spacing */
  --section-pad: clamp(1rem, 3vw, 4rem);
  --container-max: 1100px;
  --gap: 1rem;

  /* Radii / Shadows */
  --radius: 6px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,.08);
  --shadow-md: 0 6px 24px rgba(0,0,0,.12);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--clr-text);
  background: var(--clr-white);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
}

a { color: var(--clr-blue); text-decoration: underline; }
a:hover { color: var(--clr-navy); }

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

/* ---------- Layout Helpers ---------- */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.container-narrow {
  max-width: 720px;
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

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

.section-light  { background: var(--clr-white); }
.section-dark   { background: var(--clr-navy);  color: var(--clr-white); }
.section-accent { background: var(--clr-accent); }

.section-dark a { color: var(--clr-sky); }
.section-dark a:hover { color: var(--clr-white); }

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 2.5rem;
  padding-bottom: .75rem;
  border-bottom: 3px solid var(--clr-gold);
  display: inline-block;
}

.section-dark .section-title {
  color: var(--clr-white);
  border-bottom-color: var(--clr-gold);
}

.lead {
  font-size: 1.1rem;
  color: var(--clr-muted);
  margin-bottom: 1.25rem;
}
.section-dark .lead { color: var(--clr-sky); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: .65em 1.6em;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: .95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background .2s, color .2s, border-color .2s;
}

.btn-primary {
  background: var(--clr-gold);
  color: var(--clr-navy);
  border: 2px solid var(--clr-gold);
}
.btn-primary:hover {
  background: #b8932f;
  border-color: #b8932f;
  color: var(--clr-white);
}

.btn-outline {
  background: transparent;
  color: var(--clr-white);
  border: 2px solid var(--clr-white);
}
.btn-outline:hover {
  background: var(--clr-white);
  color: var(--clr-navy);
}

/* ---------- Navigation ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--clr-navy);
  box-shadow: 0 2px 12px rgba(0,0,0,.25);
}

.navbar {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
  height: 62px;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--clr-white);
  text-decoration: none;
  white-space: nowrap;
  margin-right: auto;
}
.nav-logo:hover { color: var(--clr-gold); }

.nav-links {
  display: flex;
  align-items: center;
  gap: .25rem;
  list-style: none;
}

.nav-links a {
  padding: .35em .75em;
  color: var(--clr-sky);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
  border-radius: var(--radius);
  transition: background .15s, color .15s;
}
.nav-links a:hover { background: rgba(255,255,255,.1); color: var(--clr-white); }

.nav-links .nav-cta {
  background: var(--clr-gold);
  color: var(--clr-navy);
  font-weight: 600;
  margin-left: .5rem;
}
.nav-links .nav-cta:hover { background: #b8932f; color: var(--clr-white); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: .4rem;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-white);
  border-radius: 2px;
  transition: transform .2s;
}

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, var(--clr-navy) 55%, var(--clr-blue) 100%);
  color: var(--clr-white);
  padding-block: clamp(2rem, 5vw, 3.5rem);
  text-align: center;
  padding-inline: clamp(1rem, 6vw, 4rem);
}

.hero-inner { max-width: 700px; margin-inline: auto; }

.hero-label {
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--clr-gold);
  margin-bottom: .75rem;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 600;
  line-height: 1.15;
  margin-bottom: .75rem;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--clr-sky);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  list-style: none;
  margin-bottom: 0;
  font-size: .95rem;
  color: var(--clr-sky);
}

.hero-meta li {
  display: flex;
  align-items: center;
  gap: .45rem;
}

.hero-meta svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  stroke: var(--clr-gold);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}



/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 3rem;
  align-items: start;
}

.about-portrait img {
  width: 100%;
  box-shadow: var(--shadow-md);
}

.about-text p { margin-bottom: 1rem; }

blockquote {
  border-left: 4px solid var(--clr-gold);
  padding: 1rem 1.5rem;
  margin-block: 1.5rem;
  background: var(--clr-off-white);
  border-radius: 0 var(--radius) var(--radius) 0;
}
blockquote p { margin-bottom: .25rem; font-style: italic; font-family: var(--font-serif); font-size: 1.1rem; }
blockquote cite { font-size: .9rem; color: var(--clr-muted); }

/* ---------- Speakers ---------- */
.speakers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

.speaker-card {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  transition: background .2s;
}
.speaker-card:hover { background: rgba(255,255,255,.12); }

.speaker-card img {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  flex-shrink: 0;
  object-fit: cover;
}

.speaker-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--clr-white);
  margin-bottom: .2rem;
}
.speaker-affil {
  font-size: .82rem;
  color: var(--clr-sky);
  margin-bottom: .35rem;
}
.speaker-talk {
  font-size: .85rem;
  color: var(--clr-sky);
}

/* ---------- Programme ---------- */
.programme-day { margin-bottom: 2.5rem; }

.day-heading {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--clr-navy);
  margin-bottom: .75rem;
  padding-bottom: .4rem;
  border-bottom: 2px solid var(--clr-sky);
}

.schedule {
  width: 100%;
  border-collapse: collapse;
  font-size: .92rem;
}

.schedule th {
  background: var(--clr-navy);
  color: var(--clr-white);
  text-align: left;
  padding: .6rem 1rem;
  font-weight: 600;
}
.schedule th:first-child { width: 130px; }

.schedule td {
  padding: .65rem 1rem;
  vertical-align: top;
  border-bottom: 1px solid var(--clr-border);
}
.schedule td:first-child {
  white-space: nowrap;
  font-weight: 500;
  color: var(--clr-navy);
}
.schedule tbody tr:hover td { background: var(--clr-off-white); }

.schedule .row-break td { background: var(--clr-accent); color: var(--clr-muted); font-style: italic; }
.schedule .row-break td:first-child { color: var(--clr-muted); }
.schedule .row-social td { background: #eff6e0; color: #3a5c1a; }
.schedule .row-social td:first-child { color: #3a5c1a; }

.speaker-name {
  font-size: .85rem;
  color: var(--clr-muted);
}

/* ---------- Organizers ---------- */
.organizers-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.organizers-list li {
  background: var(--clr-white);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-sm);
  line-height: 1.5;
}
.organizers-list strong { display: block; color: var(--clr-navy); font-size: 1rem; margin-bottom: .2rem; }

.contact-note {
  font-size: .95rem;
  color: var(--clr-muted);
}
.contact-note a { color: var(--clr-blue); }

/* ---------- Registration ---------- */
.reg-table-wrapper { overflow-x: auto; margin-block: 1.5rem; }

.reg-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .92rem;
}
.reg-table th {
  background: var(--clr-navy);
  color: var(--clr-white);
  padding: .65rem 1rem;
  text-align: left;
}
.reg-table td {
  padding: .65rem 1rem;
  border-bottom: 1px solid var(--clr-border);
}
.reg-table tbody tr:hover td { background: var(--clr-off-white); }

#registration .btn { margin-block: 1.5rem; }

.deadline {
  font-size: .9rem;
  color: var(--clr-muted);
  margin-top: .5rem;
}

/* ---------- Venue ---------- */
.venue-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  align-items: start;
}

.venue-info h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--clr-white);
  margin-bottom: .5rem;
  margin-top: 1.25rem;
}
.venue-info h3:first-child { margin-top: 0; }

.venue-info address {
  font-style: normal;
  color: var(--clr-sky);
  line-height: 1.8;
  margin-bottom: .5rem;
}

.venue-transport {
  list-style: none;
  color: var(--clr-sky);
  display: flex;
  flex-direction: column;
  gap: .4rem;
  margin-bottom: .5rem;
}
.venue-transport li::before {
  content: '→ ';
  color: var(--clr-gold);
}
.venue-transport strong { color: var(--clr-white); }

.venue-info p { color: var(--clr-sky); }

.venue-map img {
  width: 100%;
  box-shadow: var(--shadow-md);
}

/* ---------- Footer ---------- */
.site-footer {
  background: #0f2035;
  color: var(--clr-sky);
  text-align: center;
  padding-block: 2.5rem;
  font-size: .9rem;
  line-height: 2;
}
.footer-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--clr-white);
}
.site-footer a { color: var(--clr-sky); }
.site-footer a:hover { color: var(--clr-white); }
.footer-sponsors { font-size: .8rem; margin-top: .5rem; }
.footer-copy { font-size: .8rem; color: var(--clr-muted); margin-top: .25rem; }

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 900px) {
  .hero-inner { max-width: 100%; }

  .about-grid {
    grid-template-columns: 1fr;
  }
  .about-portrait {
    display: flex;
    justify-content: center;
  }
  .about-portrait img { max-width: 220px; }

  .venue-grid { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .nav-toggle { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: 62px;
    left: 0;
    right: 0;
    background: var(--clr-navy);
    flex-direction: column;
    align-items: stretch;
    padding: .75rem 1rem;
    gap: .25rem;
    box-shadow: 0 8px 16px rgba(0,0,0,.3);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: .6em 1em; }
  .nav-links .nav-cta { margin-left: 0; margin-top: .25rem; }

  .speakers-grid { grid-template-columns: 1fr; }
  .speaker-card { flex-direction: row; }

  .organizers-list { grid-template-columns: 1fr; }

  .schedule th:first-child { width: 90px; }
  .schedule td, .schedule th { padding: .5rem .65rem; font-size: .85rem; }
}