:root {
  --bg-1: #fff8f4;
  --bg-2: #f8fbff;
  --panel: rgba(255, 255, 255, 0.82);
  --text: #1f2430;
  --muted: #5f6b7a;
  --border: rgba(40, 50, 70, 0.08);
  --shadow: 0 10px 30px rgba(31, 36, 48, 0.10);
  --shadow-hover: 0 18px 38px rgba(31, 36, 48, 0.16);

  --red-bg: linear-gradient(135deg, #ffe0e0 0%, #ffd2d2 100%);
  --red-border: #f3aaaa;
  --red-accent: #c63b3b;

  --green-bg: linear-gradient(135deg, #e3f6e8 0%, #d4efda 100%);
  --green-border: #a9d7b4;
  --green-accent: #2f8f57;

  --blue-bg: linear-gradient(135deg, #e1eeff 0%, #d3e4ff 100%);
  --blue-border: #a8c8f2;
  --blue-accent: #2f6fcb;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: Inter, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, #fff0ea 0%, transparent 32%),
    radial-gradient(circle at top right, #eef6ff 0%, transparent 28%),
    linear-gradient(180deg, var(--bg-1) 0%, var(--bg-2) 100%);
}

body {
  padding: 32px 20px 48px;
}

.container {
  max-width: 1020px;
  margin: 0 auto;
}

h1 {
  margin: 0 0 10px;
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #111827;
}

.muted {
  margin: 0 0 28px;
  font-size: 1.02rem;
  color: var(--muted);
}

.back {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 18px;
  padding: 10px 14px;
  border-radius: 999px;
  text-decoration: none;
  color: #334155;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--border);
  box-shadow: 0 6px 16px rgba(31, 36, 48, 0.08);
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.back:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(31, 36, 48, 0.12);
  background: rgba(255, 255, 255, 0.95);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
  align-items: stretch;
}

.card {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 96px;
  padding: 22px 20px;
  border-radius: 22px;
  text-decoration: none;
  color: #18212f;
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.2;
  border: 1px solid var(--border);
  background: var(--panel);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition:
    transform 0.18s ease,
    box-shadow 0.18s ease,
    border-color 0.18s ease,
    filter 0.18s ease;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.9;
  z-index: 0;
}

.card::after {
  content: "";
  position: absolute;
  width: 120px;
  height: 120px;
  right: -24px;
  bottom: -32px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.22);
  z-index: 0;
}

.card > * {
  position: relative;
  z-index: 1;
}

.card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--shadow-hover);
  filter: saturate(1.05);
}

.card:active {
  transform: translateY(-1px) scale(0.995);
}

.card:focus-visible,
.back:focus-visible {
  outline: 3px solid rgba(59, 130, 246, 0.28);
  outline-offset: 3px;
}

/* Language themes */
.card.theme-en,
.theme-en .card {
  border-color: var(--red-border);
}

.card.theme-en::before,
.theme-en .card::before {
  background: var(--red-bg);
}

.card.theme-en {
  box-shadow:
    0 10px 30px rgba(198, 59, 59, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.65);
}

.card.theme-en:hover {
  box-shadow:
    0 18px 38px rgba(198, 59, 59, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.72);
}

.card.theme-ro,
.theme-ro .card {
  border-color: var(--green-border);
}

.card.theme-ro::before,
.theme-ro .card::before {
  background: var(--green-bg);
}

.card.theme-ro {
  box-shadow:
    0 10px 30px rgba(47, 143, 87, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.65);
}

.card.theme-ro:hover {
  box-shadow:
    0 18px 38px rgba(47, 143, 87, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.72);
}

.card.theme-fr,
.theme-fr .card {
  border-color: var(--blue-border);
}

.card.theme-fr::before,
.theme-fr .card::before {
  background: var(--blue-bg);
}

.card.theme-fr {
  box-shadow:
    0 10px 30px rgba(47, 111, 203, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.65);
}

.card.theme-fr:hover {
  box-shadow:
    0 18px 38px rgba(47, 111, 203, 0.22),
    inset 0 1px 0 rgba(255, 255, 255, 0.72);
}

/* Optional page-wide tint by theme */
body.theme-en {
  background:
    radial-gradient(circle at top left, #ffe9e9 0%, transparent 30%),
    radial-gradient(circle at bottom right, #fff8f4 0%, transparent 26%),
    linear-gradient(180deg, #fff8f7 0%, #fffdfc 100%);
}

body.theme-ro {
  background:
    radial-gradient(circle at top left, #eaf8ee 0%, transparent 30%),
    radial-gradient(circle at bottom right, #f8fff8 0%, transparent 26%),
    linear-gradient(180deg, #f7fff8 0%, #fcfffc 100%);
}

body.theme-fr {
  background:
    radial-gradient(circle at top left, #eaf2ff 0%, transparent 30%),
    radial-gradient(circle at bottom right, #f7fbff 0%, transparent 26%),
    linear-gradient(180deg, #f7fbff 0%, #fcfeff 100%);
}

body.theme-root {
  background:
    radial-gradient(circle at top left, #fff0ea 0%, transparent 32%),
    radial-gradient(circle at top right, #eef6ff 0%, transparent 28%),
    linear-gradient(180deg, #fff8f4 0%, #f8fbff 100%);
}

.error {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 14px;
  color: #8a1c1c;
  background: #ffe7e7;
  border: 1px solid #f1b4b4;
  font-weight: 600;
}

@media (max-width: 640px) {
  body {
    padding: 24px 16px 36px;
  }

  .grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .card {
    min-height: 84px;
    padding: 18px 18px;
    font-size: 1.2rem;
    border-radius: 18px;
  }

  h1 {
    margin-bottom: 8px;
  }
}

.card-label {
  position: relative;
  z-index: 1;
  display: inline-block;
}

.card {
  font-weight: 800;
}

.card.theme-en .card-label {
  color: #7a1f1f;
}

.card.theme-ro .card-label {
  color: #1f5c39;
}

.card.theme-fr .card-label {
  color: #1f4fa5;
}