@font-face {
  font-family: "Space Grotesk";
  font-style: normal;
  font-weight: 300 600;
  font-display: swap;
  src: url("../fonts/space-grotesk-latin.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/ibm-plex-mono-400-latin.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/ibm-plex-mono-500-latin.woff2") format("woff2");
}

:root {
  --bg: #f7f5f0;
  --bg-elevated: #ffffff;
  --text: #15140f;
  --text-muted: #7c7a70;
  --border: rgba(21, 20, 15, 0.1);

  --accent-bg: #15140f;
  --accent-text: #f7f5f0;

  --positiv-text: #4a6b45;
  --positiv-bg: rgba(74, 107, 69, 0.1);
  --neutral-text: #8a6f3f;
  --neutral-bg: rgba(138, 111, 63, 0.1);
  --negativ-text: #a8503c;
  --negativ-bg: rgba(168, 80, 60, 0.1);

  --shadow: 0 20px 40px -20px rgba(21, 20, 15, 0.25);
  --font-sans: "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b0a;
    --bg-elevated: #171613;
    --text: #f3f1ea;
    --text-muted: #8d8a80;
    --border: rgba(255, 255, 255, 0.08);

    --accent-bg: #f3f1ea;
    --accent-text: #0b0b0a;

    --positiv-text: #AFE594;
    --positiv-bg: rgba(163, 196, 147, 0.12);
    --neutral-text: #EAC577;
    --neutral-bg: rgba(217, 189, 130, 0.1);
    --negativ-text: #D37459;
    --negativ-bg: rgba(226, 147, 124, 0.12);

    --shadow: 0 24px 48px -20px rgba(0, 0, 0, 0.6);
  }
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

/* atmospheric background */

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.35;
}

@media (prefers-color-scheme: dark) {
  .blob {
    opacity: 0.22;
    mix-blend-mode: screen;
  }
}

.blob-positiv {
  width: 46vw;
  height: 46vw;
  top: -12vw;
  left: -14vw;
  background: var(--positiv-text);
}

.blob-negativ {
  width: 40vw;
  height: 40vw;
  top: 20vh;
  right: -16vw;
  background: var(--negativ-text);
}

.blob-neutral {
  width: 38vw;
  height: 38vw;
  bottom: -10vh;
  left: 10vw;
  background: var(--neutral-text);
}

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 2.75rem 1.25rem calc(2rem + env(safe-area-inset-bottom));
  position: relative;
}

.header {
  text-align: center;
  margin-bottom: 2.25rem;
}

.logo {
  display: inline-flex;
  margin: 0 0 1.5rem;
}

.logo img {
  display: block;
  height: 64px;
  width: auto;
  margin: -30px 0 -11px 1px;
}

.question {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 2.5rem;
  font-weight: 300;
  line-height: 1.12;
  letter-spacing: -0.01em;
}

.filters {
  display: flex;
  gap: 0.4rem;
  padding: 0.6rem 0.9rem;
  padding-top: max(0.6rem, env(safe-area-inset-top));
  margin: 0 -1.25rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border);
}

.filter-btn {
  flex: 1 1 0;
  min-width: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 40px;
  padding: 0.5rem 0.4rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

.filter-btn:active {
  transform: scale(0.97);
}

.filter-btn.is-active {
  background: var(--accent-bg);
  color: var(--accent-text);
  border-color: var(--accent-bg);
}

.filter-btn .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  background: currentColor;
}

.dot-alle {
  background: linear-gradient(135deg, var(--positiv-text), var(--negativ-text));
}

.filter-btn[data-filter="positiv"] .dot {
  background: var(--positiv-text);
}

.filter-btn[data-filter="neutral"] .dot {
  background: var(--neutral-text);
}

.filter-btn[data-filter="negativ"] .dot {
  background: var(--negativ-text);
}

.filter-btn.is-active .dot {
  background: currentColor;
}

.filter-btn.is-active[data-filter="alle"] .dot {
  background: linear-gradient(135deg, var(--positiv-bg), var(--negativ-bg));
}

@media (max-width: 360px) {
  .filters {
    gap: 0.25rem;
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }

  .filter-btn {
    padding: 0.45rem 0.3rem;
    font-size: 0.65rem;
  }
}

.count {
  text-align: center;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 1.75rem;
}

.letter-group {
  margin-bottom: 1.75rem;
  animation: rise 0.4s ease both;
}

.letter-group:last-child {
  margin-bottom: 0;
}

.letter {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin: 0 0 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.letter-count {
  font-weight: 400;
  color: var(--text-muted);
  opacity: 0.6;
}

.letter-items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.feeling {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-size: 0.9rem;
  line-height: 1.2;
  white-space: nowrap;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.feeling:hover {
  border-color: currentColor;
}

.feeling:active {
  transform: scale(0.96);
}

.feeling.is-selected {
  font-weight: 500;
  box-shadow: var(--shadow);
}

.feeling[data-category="positiv"] {
  background: var(--positiv-bg);
  color: var(--positiv-text);
}

.feeling[data-category="neutral"] {
  background: var(--neutral-bg);
  color: var(--neutral-text);
}

.feeling[data-category="negativ"] {
  background: var(--negativ-bg);
  color: var(--negativ-text);
}

.feeling[data-category="positiv"].is-selected {
  background: var(--positiv-text);
  color: var(--bg);
}

.feeling[data-category="neutral"].is-selected {
  background: var(--neutral-text);
  color: var(--bg);
}

.feeling[data-category="negativ"].is-selected {
  background: var(--negativ-text);
  color: var(--bg);
}

.feeling.is-hidden {
  display: none;
}

.selection-summary {
  position: sticky;
  bottom: max(1rem, env(safe-area-inset-bottom));
  margin-top: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0.9rem 0.9rem 1.3rem;
  border-radius: 24px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.selection-summary[hidden] {
  display: none;
}

.selection-text {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.4;
  color: var(--text);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 5;
  overflow: hidden;
}

.reset-button {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 1.1rem;
  border: none;
  border-radius: 999px;
  background: var(--accent-bg);
  color: var(--accent-text);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.15s ease;
  -webkit-tap-highlight-color: transparent;
}

.reset-button:active {
  transform: scale(0.96);
}

.footer {
  margin: 3rem 0 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  opacity: 0.7;
}

.footer-link {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer-link:hover {
  color: var(--text);
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .letter-group {
    animation: none;
  }
}

@media (max-width: 420px) {
  .question {
    font-size: 1.9rem;
  }

  .feeling {
    font-size: 0.85rem;
    padding: 0.45rem 0.85rem;
  }

  .selection-summary {
    padding: 0.8rem 0.8rem 0.8rem 1.1rem;
  }

  .selection-text {
    font-size: 0.78rem;
  }
}