/**
 * Code Credits
 * Project: kilowattradio
 * Owner: Torsten Nixdorf
 * Coding Brand: Nixdorf Media
 * Purpose: Design system for the local KiloWatt website build.
 *
 * Rules:
 * - UTF-8 with German umlauts
 * - no secrets in source code
 * - no external fonts
 */

:root {
  --kw-black: #221c19;
  --kw-red: #cf2530;
  --kw-red-dark: #9f1f25;
  --kw-paper: #fbf7ef;
  --kw-white: #fffdf8;
  --kw-ink: #2b2420;
  --kw-muted: #6f625b;
  --kw-line: #e5d9c8;
  --kw-soft: #f1eadf;
  --kw-focus: #ffd400;
  --max-width: 1180px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --shadow-sm: 0 16px 42px rgba(94, 68, 45, 0.13);
  --font-display: "Segoe UI Semibold", "Trebuchet MS", Arial, system-ui, sans-serif;
  --font-body: "Segoe UI", "Source Sans 3", Arial, system-ui, sans-serif;
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4.5rem;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background:
    radial-gradient(circle at 8% 0%, rgba(207, 37, 48, 0.08), transparent 30rem),
    linear-gradient(180deg, #fffaf2 0%, var(--kw-paper) 42%, #f6efe3 100%);
  color: var(--kw-ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.66;
}

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

a {
  color: inherit;
  text-decoration-color: var(--kw-red);
  text-decoration-thickness: 0.1em;
  text-underline-offset: 0.22em;
}

a:hover {
  color: var(--kw-red-dark);
}

:focus-visible {
  outline: 3px solid var(--kw-focus);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 0.5rem;
  z-index: 30;
  transform: translateY(-160%);
  background: var(--kw-focus);
  color: var(--kw-black);
  padding: 0.55rem 0.85rem;
  font-weight: 760;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 253, 248, 0.92);
  border-bottom: 1px solid var(--kw-line);
  backdrop-filter: blur(14px);
}

.nav-shell {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  min-width: 14.5rem;
  text-decoration: none;
}

.brand img {
  width: 66px;
  height: 42px;
  object-fit: contain;
  background: var(--kw-white);
  border: 1px solid var(--kw-line);
  border-radius: 10px;
  padding: 0.18rem;
}

.brand strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.14rem;
  font-weight: 760;
  letter-spacing: -0.025em;
  line-height: 1.05;
}

.brand small {
  display: block;
  color: var(--kw-muted);
  font-size: 0.78rem;
  line-height: 1.2;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  margin-left: auto;
  border: 1px solid var(--kw-line);
  border-radius: 999px;
  background: var(--kw-white);
  color: var(--kw-black);
  box-shadow: 0 8px 18px rgba(94, 68, 45, 0.08);
  padding: 0.55rem 0.9rem;
  font: inherit;
  font-weight: 720;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.nav-toggle:hover {
  background: var(--kw-red-dark);
  color: var(--kw-white);
}

.nav-toggle:active {
  transform: translateY(1px);
}

.nav-links {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 0.12rem;
  font-size: 0.93rem;
  font-weight: 660;
}

.nav-links > a,
.nav-group > a {
  display: inline-flex;
  align-items: center;
  min-height: 2.55rem;
  padding: 0.42rem 0.68rem;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 999px;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.nav-links > a[aria-current="page"],
.nav-group > a[aria-current="page"] {
  color: var(--kw-red-dark);
  background: #fff1ea;
  border-color: rgba(207, 37, 48, 0.2);
}

.nav-links > a:hover,
.nav-group > a:hover {
  color: var(--kw-red-dark);
  background: #fff6ef;
  border-color: rgba(207, 37, 48, 0.25);
}

.nav-group {
  position: relative;
}

.projects-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 15rem;
  display: none;
  background: var(--kw-white);
  border: 1px solid var(--kw-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.projects-menu a {
  display: block;
  padding: 0.8rem 0.9rem;
  text-decoration: none;
  border-bottom: 1px solid var(--kw-line);
}

.projects-menu a:last-child {
  border-bottom: 0;
}

.projects-menu a:hover,
.projects-menu a:focus-visible {
  background: #fff1ea;
  color: var(--kw-red-dark);
}

.nav-group:hover .projects-menu,
.nav-group:focus-within .projects-menu {
  display: block;
}

.main {
  min-height: 60vh;
}

.section,
.hero,
.site-footer {
  padding-left: 1rem;
  padding-right: 1rem;
}

.section {
  padding-top: var(--space-7);
  padding-bottom: calc(var(--space-7) + 0.75rem);
}

.section.compact {
  padding-top: var(--space-5);
  padding-bottom: var(--space-6);
}

.wrap {
  width: min(100%, var(--max-width));
  margin: 0 auto;
}

.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 82% 14%, rgba(207, 37, 48, 0.13), transparent 20rem),
    linear-gradient(135deg, #fffdf8 0%, #fbf3e9 52%, #f4e8d8 100%);
  color: var(--kw-ink);
  border-bottom: 1px solid var(--kw-line);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(207, 37, 48, 0.09) 0 1px, transparent 1px 42px),
    linear-gradient(180deg, transparent 0%, rgba(34, 28, 25, 0.03) 100%);
  opacity: 0.9;
}

.hero > .wrap {
  position: relative;
  z-index: 1;
}

.hero .wrap {
  padding-top: clamp(3.8rem, 8vw, 6.5rem);
  padding-bottom: clamp(4.5rem, 8vw, 7rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(260px, 0.92fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.eyebrow {
  margin: 0 0 var(--space-2);
  color: var(--kw-red-dark);
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: var(--kw-red-dark);
}

h1,
h2,
h3 {
  margin: 0;
  color: inherit;
  font-family: var(--font-display);
  font-weight: 760;
  line-height: 1.08;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

h1 {
  max-width: 14ch;
  font-size: clamp(2.7rem, 7vw, 5.65rem);
}

h2 {
  font-size: clamp(1.8rem, 3.8vw, 3.2rem);
}

h3 {
  font-size: clamp(1.24rem, 2.2vw, 1.75rem);
}

p {
  margin-top: 0;
}

.lead {
  max-width: 42rem;
  margin-top: var(--space-4);
  color: var(--kw-muted);
  font-size: clamp(1.1rem, 2vw, 1.34rem);
  line-height: 1.56;
}

.hero-panel,
.card,
.audio-box,
.form-panel,
.notice {
  background: var(--kw-white);
  border: 1px solid rgba(34, 28, 25, 0.13);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.hero-panel {
  color: var(--kw-black);
  padding: clamp(1rem, 3vw, 1.65rem);
}

.hero-panel img {
  width: min(100%, 420px);
  max-height: 280px;
  margin: 0 auto;
  border: 1px solid var(--kw-line);
  border-radius: 14px;
  object-fit: contain;
  background: var(--kw-white);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.button,
button.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  border: 1px solid rgba(159, 31, 37, 0.42);
  border-radius: 999px;
  background: var(--kw-red-dark);
  color: var(--kw-white);
  padding: 0.72rem 1.08rem;
  font: inherit;
  font-weight: 760;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 10px 20px rgba(159, 31, 37, 0.16);
  transition: background 180ms ease, color 180ms ease, border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.button.secondary {
  background: var(--kw-white);
  color: var(--kw-black);
  border-color: var(--kw-line);
  box-shadow: none;
}

.button:hover,
button.button:hover {
  background: var(--kw-red);
  color: var(--kw-white);
  transform: translateY(-1px);
  box-shadow: 0 14px 30px rgba(159, 31, 37, 0.19);
}

.button.secondary:hover {
  background: #fff3ea;
  color: var(--kw-red-dark);
  border-color: rgba(207, 37, 48, 0.34);
  box-shadow: none;
}

.button:active,
button.button:active {
  transform: translateY(1px);
}

.grid {
  display: grid;
  gap: var(--space-4);
}

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

.grid.three {
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
}

.grid.three > :nth-child(3n) {
  grid-column: span 2;
}

.grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(260px, 0.48fr);
  gap: var(--space-4);
  align-items: end;
  margin-bottom: var(--space-5);
}

.card,
.audio-box,
.form-panel,
.notice {
  padding: clamp(1.15rem, 3vw, 1.65rem);
}

.card {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.card.red {
  background: #fff1ec;
  color: var(--kw-ink);
  border-color: rgba(207, 37, 48, 0.22);
}

.card.dark {
  background: #2f2824;
  color: var(--kw-white);
}

.card.dark .eyebrow {
  color: #ffd3a0;
}

.card .meta,
.meta {
  color: var(--kw-muted);
  font-size: 0.9rem;
  font-weight: 720;
}

.card.dark .meta {
  color: rgba(255, 255, 255, 0.74);
}

.hero .meta {
  color: var(--kw-muted);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
}

.tag-list li,
.badge {
  display: inline-flex;
  align-items: center;
  min-height: 1.85rem;
  background: #fff7ef;
  color: var(--kw-black);
  border: 1px solid var(--kw-line);
  border-radius: 999px;
  padding: 0.22rem 0.55rem;
  font-size: 0.82rem;
  font-weight: 700;
}

.card.red .tag-list li,
.card.dark .tag-list li {
  background: var(--kw-white);
}

.audio-box {
  display: grid;
  gap: var(--space-3);
}

audio {
  width: 100%;
}

.audio-note {
  margin: 0;
  padding: 0.85rem 1rem;
  color: var(--kw-muted);
  font-weight: 700;
  background: #fff8ef;
  border: 1px dashed var(--kw-line);
  border-radius: 12px;
}

.filter-bar {
  display: grid;
  grid-template-columns: 1.2fr repeat(3, minmax(130px, 0.75fr)) auto;
  gap: var(--space-2);
  align-items: end;
  margin-bottom: var(--space-4);
  padding: 1rem;
  background: rgba(255, 253, 248, 0.72);
  border: 1px solid var(--kw-line);
  border-radius: var(--radius-md);
}

.field {
  display: grid;
  gap: 0.35rem;
}

label,
.label {
  font-weight: 720;
}

input,
select,
textarea {
  width: 100%;
  min-height: 2.8rem;
  border: 1px solid rgba(34, 28, 25, 0.22);
  border-radius: 12px;
  background: var(--kw-white);
  color: var(--kw-black);
  padding: 0.65rem 0.75rem;
  font: inherit;
}

textarea {
  min-height: 9rem;
  resize: vertical;
}

.episode-card[hidden] {
  display: none;
}

.media-frame {
  overflow: hidden;
  border: 1px solid rgba(34, 28, 25, 0.14);
  border-radius: var(--radius-md);
  background: var(--kw-white);
  box-shadow: var(--shadow-sm);
}

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

.ratio-16-9 {
  aspect-ratio: 16 / 9;
}

.ratio-14-9 {
  aspect-ratio: 14 / 9;
}

.qr-panel {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: var(--space-4);
  align-items: center;
}

.qr-panel img {
  width: 160px;
  height: 160px;
  object-fit: contain;
  background: var(--kw-white);
  border: 1px solid var(--kw-line);
  border-radius: 14px;
  padding: 0.5rem;
}

.site-footer {
  background: #2a2420;
  color: var(--kw-white);
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.09);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr repeat(3, minmax(140px, 0.5fr));
  gap: var(--space-4);
}

.footer-grid a {
  color: var(--kw-white);
}

.footer-list {
  display: grid;
  gap: 0.35rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.small {
  font-size: 0.92rem;
}

.muted {
  color: var(--kw-muted);
}

.site-footer .muted {
  color: rgba(255, 255, 255, 0.7);
}

.form-status {
  min-height: 1.5rem;
  margin: var(--space-3) 0 0;
  font-weight: 720;
}

.breadcrumb {
  padding-top: var(--space-4);
  font-size: 0.9rem;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumb li::after {
  content: "/";
  margin-left: 0.35rem;
  color: var(--kw-red-dark);
}

.breadcrumb li:last-child::after {
  content: "";
}

@media (max-width: 980px) {
  .grid.three,
  .grid.four,
  .footer-grid,
  .section-head {
    grid-template-columns: 1fr 1fr;
  }

  .grid.three > :nth-child(3n) {
    grid-column: auto;
  }

  .filter-bar {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 860px) {
  .nav-shell {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    flex-basis: 100%;
    width: 100%;
    margin-left: 0;
    align-items: stretch;
    flex-direction: column;
    gap: 0.25rem;
    padding-top: var(--space-2);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links > a,
  .nav-group > a {
    display: flex;
    justify-content: space-between;
    border-color: var(--kw-line);
    background: var(--kw-white);
  }

  .projects-menu {
    position: static;
    display: block;
    min-width: auto;
    border-width: 1px;
    box-shadow: none;
  }

  .hero-grid,
  .grid.two,
  .grid.three,
  .grid.four,
  .section-head,
  .footer-grid,
  .qr-panel {
    grid-template-columns: 1fr;
  }

  .hero-panel img {
    max-height: 220px;
  }
}

@media (max-width: 560px) {
  .brand {
    min-width: 0;
  }

  .brand small {
    display: none;
  }

  h1 {
    font-size: clamp(2.45rem, 14vw, 4rem);
  }

  .section {
    padding-top: var(--space-6);
    padding-bottom: var(--space-6);
  }

  .filter-bar {
    grid-template-columns: 1fr;
  }

  .button,
  button.button {
    width: 100%;
  }
}