:root {
  --bg-dark: #050608;
  --bg-light: #f7f7f9;
  --text-dark: #ffffff;
  --text-light: #121212;

  --card-dark: #111319;
  --card-light: #ffffff;

  --border-dark: #262a34;
  --border-light: #d9d9e3;

  --accent: #6ec1e4;
  --accent-soft: rgba(110, 193, 228, 0.18);
  --accent-strong: #0070ba;

  --danger: #ffb546;
  --radius-lg: 18px;
  --radius-md: 12px;

  --shadow-soft-dark: 0 18px 45px rgba(0, 0, 0, 0.55);
  --shadow-soft-light: 0 14px 30px rgba(15, 23, 42, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  margin: 0;
  padding: 0;
  transition: background 0.3s ease, color 0.3s ease;
  line-height: 1.6;
}

body.dark {
  background: radial-gradient(circle at top, #181b29 0, #050608 55%);
  color: var(--text-dark);
}

body.light {
  background: radial-gradient(circle at top, #ffffff 0, #f1f3f8 60%);
  color: var(--text-light);
}

/* ---------- THEME TOGGLE ---------- */

#modeToggle {
  position: fixed;
  top: 16px;
  right: 16px;
  background: rgba(0, 0, 0, 0.2);
  color: inherit;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
  font-size: 1.1rem;
  padding: 6px 12px;
  cursor: pointer;
  z-index: 1000;
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, transform 0.1s ease, border-color 0.2s ease;
}

body.light #modeToggle {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(0, 0, 0, 0.1);
}

#modeToggle:hover {
  transform: translateY(-1px);
}

/* ---------- HERO ---------- */

.hero {
  padding: 80px 20px 30px;
}

.hero-inner {
  max-width: 960px;
  margin: 0 auto;
}

.eyebrow {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  opacity: 0.7;
  margin: 0 0 10px;
}

header h1 {
  font-size: clamp(2.4rem, 4vw, 3rem);
  margin: 0 0 12px;
}

.tagline {
  font-size: 1rem;
  max-width: 650px;
  margin: 0 0 10px;
  color: rgba(255, 255, 255, 0.78);
}

body.light .tagline {
  color: #454b59;
}

.description {
  font-size: 0.98rem;
  max-width: 650px;
  margin: 8px 0 24px;
  color: rgba(255, 255, 255, 0.7);
}

body.light .description {
  color: #555b6b;
}

.description #typedText {
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px dotted rgba(110, 193, 228, 0.6);
}

/* ---------- BUTTONS & BADGES ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.2s ease, color 0.2s ease, transform 0.1s ease,
    box-shadow 0.2s ease;
  white-space: nowrap;
}

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

.primary-btn {
  background: var(--accent);
  color: #021019;
  box-shadow: 0 12px 25px rgba(110, 193, 228, 0.35);
}

.primary-btn:hover {
  box-shadow: 0 16px 35px rgba(110, 193, 228, 0.45);
}

.ghost-btn {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.35);
  color: inherit;
}

body.light .ghost-btn {
  border-color: rgba(0, 0, 0, 0.12);
}

.ghost-btn:hover {
  background: rgba(255, 255, 255, 0.06);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.badge {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(110, 193, 228, 0.4);
}

/* ---------- LAYOUT ---------- */

.layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 10px 20px 40px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

/* ---------- TOOL CARDS ---------- */

.tool {
  text-decoration: none;
  background: var(--card-dark);
  color: inherit;
  padding: 18px 18px 16px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-dark);
  box-shadow: var(--shadow-soft-dark);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 170px;
  transition: transform 0.15s ease, box-shadow 0.18s ease,
    border-color 0.18s ease, background 0.2s ease;
  position: relative;
  overflow: hidden;
}

.tool::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  background: radial-gradient(
    circle at top left,
    rgba(110, 193, 228, 0.16),
    transparent 55%
  );
  transition: opacity 0.2s ease;
  pointer-events: none;
}

body.light .tool {
  background: var(--card-light);
  border-color: var(--border-light);
  box-shadow: var(--shadow-soft-light);
}

.tool:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
  border-color: rgba(110, 193, 228, 0.7);
}

body.light .tool:hover {
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.18);
}

.tool:hover::before {
  opacity: 1;
}

.tool-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
}

.tool h3 {
  margin: 0;
  font-size: 1.15rem;
}

.tool-tag {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  opacity: 0.7;
}

.tool p {
  font-size: 0.9rem;
  margin: 4px 0 0;
  color: #b8bfd4;
}

body.light .tool p {
  color: #51576a;
}

/* ---------- SPECIAL CARDS ---------- */

.tool.about {
  cursor: default;
}

.tool.about a {
  color: var(--accent);
}

.tool.about a:hover {
  text-decoration: underline;
}

.about-meta {
  font-size: 0.8rem;
  margin-top: 12px;
  opacity: 0.9;
}

/* Donate card */

.tool.donate {
  border-color: rgba(255, 181, 70, 0.75);
  background: radial-gradient(circle at top, #2b1d06, #110c05 55%);
}

body.light .tool.donate {
  background: linear-gradient(135deg, #fff8eb, #fff4d5);
  border-color: #ffd28a;
}

.donate-btn {
  width: 100%;
  margin-top: 6px;
  background: var(--accent-strong);
  color: #ffffff;
  border-radius: 999px;
  border: none;
  font-size: 0.9rem;
  padding: 9px 14px;
  box-shadow: 0 12px 24px rgba(0, 112, 186, 0.4);
}

.donate-btn:hover {
  box-shadow: 0 18px 30px rgba(0, 112, 186, 0.55);
}

.donate-small {
  font-size: 0.78rem;
  margin-top: 8px;
  opacity: 0.8;
}

/* ---------- FOOTER ---------- */

footer {
  text-align: center;
  font-size: 0.85rem;
  padding: 26px 10px 40px;
  color: rgba(255, 255, 255, 0.6);
}

body.light footer {
  color: #6b7280;
}

/* ---------- GLOBAL LINKS ---------- */

a {
  color: inherit;
}

body.dark a:hover {
  text-decoration: underline;
}

/* ---------- RESPONSIVE ---------- */

@media (max-width: 720px) {
  .hero {
    padding-top: 70px;
  }

  .hero-inner {
    text-align: left;
  }

  .hero-cta {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

@media (max-width: 540px) {
  .hero-inner {
    text-align: left;
  }

  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}