/* ==========================================================================
   Tucker in Color — Design System & Stylesheet
   Derived from logo_sun_palette3.png and Wireframe Sketches
   ========================================================================== */

:root {
  /* Swatch Colors from Palette */
  --c-light-red: #E4906C;
  --c-straw: #F0CC54;
  --c-greyish-cyan-dark: #80B0C0;
  --c-greyish-cyan-light: #A8D8D8;
  --c-medium-flesh: #F0C090;
  --c-cold-grey-v: #608080;
  --c-warm-grey-vi: #847854;
  --c-burnt-umber: #605040;
  --c-greyish-orange: #A89078;
  --c-cold-grey-i: #E0E0D0;
  --c-sand: #CCB46C;
  --c-ivory: #F0F0F0;

  /* Theme Application */
  --bg-page: #FAF8F5;
  --bg-card: #FFFFFF;
  --text-primary: #3A322D;
  --text-muted: #73675B;
  --text-heading: #E4906C;
  --border-subtle: #E0E0D0;
  --border-strong: #CFC9BC;
  
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --header-height: 110px;
  --sidebar-width: 220px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-page);
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-page);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Site Outer Layout */
.site-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ==========================================================================
   1. Header Section
   ========================================================================== */
.site-header {
  width: 100%;
  background-color: var(--bg-page);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 16px 36px;
  max-width: 1600px;
  margin: 0 auto;
}

.logo-link {
  display: block;
  text-decoration: none;
  line-height: 0;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.logo-link:hover {
  transform: scale(1.03);
}

.site-logo {
  width: 76px;
  height: 76px;
  object-fit: cover;
  border-radius: 50%;
  display: block;
}

.brand-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.brand-title {
  font-size: 2.35rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--c-light-red);
  line-height: 1.1;
  text-transform: lowercase;
}

.brand-subtitle {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0.01em;
  margin-top: 2px;
  text-transform: lowercase;
}

/* ==========================================================================
   2. Main Body & Sidebar Layout
   ========================================================================== */
.site-body {
  display: flex;
  flex: 1;
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
}

/* Fixed/Sticky Left Sidebar Navigation */
.sidebar-nav {
  width: var(--sidebar-width);
  flex-shrink: 0;
  border-right: 1px solid var(--border-subtle);
  padding: 36px 24px 36px 36px;
  position: sticky;
  top: 110px;
  height: calc(100vh - 110px);
  overflow-y: auto;
}

.nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.nav-tab {
  background: transparent !important;
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
  -webkit-tap-highlight-color: transparent;
  color: var(--text-muted);
  font-family: var(--font-family);
  font-size: 1.45rem;
  font-weight: 400;
  text-align: left;
  cursor: pointer;
  padding: 6px 0;
  width: 100%;
  transition: color 0.18s ease-in-out, font-weight 0.1s ease;
  text-transform: lowercase;
  display: block;
}

.nav-tab:hover {
  color: var(--c-light-red);
  background: transparent !important;
}

/* Active Tab: Purely bolded with no box or background */
.nav-tab.active {
  font-weight: 800 !important;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  background: transparent !important;
}

.nav-tab:focus,
.nav-tab:focus-visible,
.nav-tab:active {
  outline: none !important;
  box-shadow: none !important;
  background: transparent !important;
}

/* ==========================================================================
   3. Dynamic Content Area
   ========================================================================== */
.content-area {
  flex: 1;
  padding: 36px 48px 60px 48px;
  min-height: calc(100vh - 110px);
  background-color: var(--bg-page);
}

.content-loading {
  font-size: 1.1rem;
  color: var(--text-muted);
  font-style: italic;
  padding: 40px 0;
}

/* Section Header (Optional/Subtle) */
.section-meta {
  margin-bottom: 24px;
}

.section-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--c-burnt-umber);
  text-transform: lowercase;
  letter-spacing: -0.01em;
}

/* ==========================================================================
   4. Media Gallery (CSS Grid / Masonry Collage)
   ========================================================================== */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  grid-auto-rows: 240px;
  grid-auto-flow: dense;
  gap: 24px;
}

.media-card {
  position: relative;
  background-color: var(--bg-card);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: transform 0.25s cubic-bezier(0.2, 0.9, 0.4, 1), box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
}

.media-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(96, 80, 64, 0.12);
  border-color: var(--border-strong);
}

.media-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
  background-color: var(--c-ivory);
}

.media-card:hover img {
  transform: scale(1.02);
}

/* Multi-Aspect Ratios inspired by wireframe Sketch #2 */
.media-card.span-portrait {
  grid-row: span 2;
}

.media-card.span-landscape {
  grid-column: span 2;
}

.media-card.span-square {
  grid-row: span 1;
}

.media-card.span-large {
  grid-column: span 2;
  grid-row: span 2;
}

/* Overlay Caption on Hover */
.media-caption-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 12px 16px;
  background: linear-gradient(to top, rgba(58, 50, 45, 0.85) 0%, rgba(58, 50, 45, 0) 100%);
  color: #FFFFFF;
  opacity: 0;
  transform: translateY(6px);
  transition: all 0.25s ease;
}

.media-card:hover .media-caption-bar {
  opacity: 1;
  transform: translateY(0);
}

.media-caption-title {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.2;
}

.media-caption-sub {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.85);
  margin-top: 2px;
}

/* ==========================================================================
   5. Music Section (Multi-Track Player)
   ========================================================================== */
.music-container {
  max-width: 680px;
  margin: 20px 0;
}

.music-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.track-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 4px 16px rgba(96, 80, 64, 0.05);
}

.track-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
}

.track-emblem {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--c-straw);
  background-color: var(--c-ivory);
}

.track-info-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--c-light-red);
  text-transform: lowercase;
  letter-spacing: -0.02em;
}

.track-info-artist {
  font-size: 1rem;
  color: var(--text-muted);
  text-transform: lowercase;
}

.track-player {
  width: 100%;
  margin-top: 12px;
}

.track-player audio {
  width: 100%;
  height: 48px;
  border-radius: 24px;
  outline: none;
}

.track-note {
  margin-top: 16px;
  font-size: 0.88rem;
  color: var(--c-warm-grey-vi);
  border-top: 1px solid var(--border-subtle);
  padding-top: 12px;
}

/* ==========================================================================
   6. About Section
   ========================================================================== */
.about-container {
  max-width: 760px;
  padding: 40px 0;
}

.about-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 48px 40px;
  position: relative;
  box-shadow: 0 4px 20px rgba(96, 80, 64, 0.04);
}

.about-quote {
  font-size: 2rem;
  font-weight: 500;
  color: var(--c-burnt-umber);
  line-height: 1.4;
  letter-spacing: -0.02em;
  font-style: italic;
  margin-bottom: 24px;
}

.about-attribution {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--c-light-red);
  text-transform: lowercase;
  letter-spacing: 0.02em;
}

.about-palette-strip {
  display: flex;
  gap: 8px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.palette-swatch {
  flex: 1;
  height: 14px;
  border-radius: 4px;
}

/* ==========================================================================
   7. Modal / Lightbox
   ========================================================================== */
.media-modal {
  position: fixed;
  inset: 0;
  background-color: rgba(30, 26, 23, 0.88);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  padding: 24px;
}

.media-modal.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  position: relative;
  max-width: 90vw;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.modal-img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
  background-color: #FAF8F5;
}

.modal-caption {
  color: #FFFFFF;
  margin-top: 14px;
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
}

.modal-close {
  position: absolute;
  top: 24px;
  right: 28px;
  background: transparent;
  border: none;
  color: #FFFFFF;
  font-size: 2.5rem;
  line-height: 1;
  cursor: pointer;
  padding: 6px 12px;
  opacity: 0.8;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.modal-close:hover {
  opacity: 1;
  transform: scale(1.1);
}

/* ==========================================================================
   8. Responsive Adjustments
   ========================================================================== */
@media (max-width: 900px) {
  .site-body {
    flex-direction: column;
  }

  .sidebar-nav {
    width: 100%;
    height: auto;
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
    padding: 16px 24px;
  }

  .nav-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 16px;
  }

  .nav-tab {
    width: auto;
    font-size: 1.25rem;
    padding: 4px 10px 4px 0;
    background: transparent !important;
    border: none !important;
    outline: none !important;
  }

  .content-area {
    padding: 24px;
  }

  .media-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    grid-auto-rows: 200px;
    gap: 16px;
  }

  .media-card.span-large,
  .media-card.span-landscape {
    grid-column: span 1;
  }
}

@media (max-width: 600px) {
  .header-inner {
    padding: 14px 20px;
    gap: 14px;
  }

  .site-logo {
    width: 58px;
    height: 58px;
  }

  .brand-title {
    font-size: 1.8rem;
  }

  .brand-subtitle {
    font-size: 0.82rem;
  }

  .about-quote {
    font-size: 1.45rem;
  }

  .media-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: 280px;
  }

  .media-card.span-portrait {
    grid-row: span 1;
  }
}