/* =========================================
   The Tool Bakery — Coin Flipper (UI Refresh)
   Professional + playful, theme-safe styles
   ========================================= */

:root {
  --ttb-coin-bg: #ffffff;
  --ttb-coin-card: #ffffff;
  --ttb-coin-text: #0f172a;           /* slate-900 */
  --ttb-coin-muted: #6b7280;          /* slate-500 */

  --ttb-coin-primary: #7c3aed;        /* violet-600 */
  --ttb-coin-primary-press: #6d28d9;  /* violet-700 */
  --ttb-coin-accent: #06b6d4;         /* cyan-500 */
  --ttb-coin-ring: rgba(124,58,237,.35);

  --ttb-coin-heads: #10b981;          /* emerald-500 */
  --ttb-coin-tails: #f59e0b;          /* amber-500 */

  --ttb-coin-radius: 1.25rem;
  --ttb-coin-shadow: 0 10px 25px rgba(2,6,23,.12);
  --ttb-coin-shadow-press: 0 6px 16px rgba(2,6,23,.18);
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --ttb-coin-bg: #0b1220;
    --ttb-coin-card: #0f172a;
    --ttb-coin-text: #e5e7eb;
    --ttb-coin-muted: #9ca3af;
    --ttb-coin-ring: rgba(56,189,248,.35);
    --ttb-coin-shadow: 0 10px 25px rgba(0,0,0,.35);
    --ttb-coin-shadow-press: 0 6px 16px rgba(0,0,0,.5);
  }
}

/* Container */
.ttb-coin-container {
  box-sizing: border-box;
  max-width: 720px;
  margin: 32px auto;
  padding: clamp(1rem, 2vw, 2rem);
  border-radius: calc(var(--ttb-coin-radius) + 6px);
  background:
    radial-gradient(1200px 300px at 20% -20%, rgba(6,182,212,.18), transparent 60%),
    radial-gradient(900px 250px at 110% 10%, rgba(124,58,237,.16), transparent 60%),
    linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,0));
  color: var(--ttb-coin-text);
  position: relative;
  isolation: isolate;
}

.ttb-coin-container h2 {
  margin: 0 0 16px 0;
  text-align: center;
  font-weight: 900;
  font-size: clamp(1.35rem, 1.1rem + 1.6vw, 2.1rem);
  letter-spacing: .2px;
  text-wrap: balance;
  color: #000000;
}

/* Heads / Tails cards */
.ttb-coin-sides {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: clamp(12px, 1.2vw, 20px);
  margin: 8px 0 18px;
}

.ttb-coin-sides > div {
  background: var(--ttb-coin-card);
  border-radius: var(--ttb-coin-radius);
  padding: clamp(.9rem, .7rem + .8vw, 1.2rem);
  border: 1px solid rgba(0,0,0,.06);
  box-shadow: var(--ttb-coin-shadow);
  display: grid;
  place-items: center;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, filter .18s ease;
}

.ttb-coin-sides > div:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(2,6,23,.14);
  filter: saturate(1.03);
}

.ttb-coin-sides img {
  width: clamp(84px, 12vw, 120px);
  height: auto;
  display: block;
  filter: drop-shadow(0 6px 10px rgba(2,6,23,.15));
}

.ttb-coin-sides p {
  margin: 10px 0 0;
  font-weight: 800;
  letter-spacing: .3px;
  color: var(--ttb-coin-muted);
  text-transform: uppercase;
  font-size: .95rem;
}

/* Flip button */
#ttb-flip-coin {
  appearance: none;
  -webkit-tap-highlight-color: transparent;
  cursor: pointer;
  user-select: none;
  border: 0;
  display: block;
  width: 100%;
  border-radius: calc(var(--ttb-coin-radius) + 6px);
  padding: clamp(.9rem, .8rem + .6vw, 1.15rem) clamp(1.1rem, 1rem + 1vw, 1.6rem);
  background:
    radial-gradient(200% 100% at 0% 0%, rgba(255,255,255,.24), rgba(255,255,255,0) 40%),
    linear-gradient(135deg, var(--ttb-coin-primary), var(--ttb-coin-accent));
  color: #fff;
  font-weight: 900;
  font-size: clamp(1rem, .9rem + .5vw, 1.15rem);
  letter-spacing: .3px;
  box-shadow: var(--ttb-coin-shadow);
  transition: transform .15s ease, box-shadow .15s ease, filter .15s ease, background .15s ease;
  margin-top: 6px;
}

#ttb-flip-coin:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(2,6,23,.16);
  filter: saturate(1.05) brightness(1.02);
}

#ttb-flip-coin:active {
  transform: translateY(0);
  box-shadow: var(--ttb-coin-shadow-press);
  background:
    radial-gradient(200% 100% at 100% 100%, rgba(0,0,0,.12), rgba(0,0,0,0) 40%),
    linear-gradient(135deg, var(--ttb-coin-primary-press), var(--ttb-coin-accent));
}

#ttb-flip-coin:focus {
  outline: none;
  box-shadow:
    0 0 0 3px #fff,
    0 0 0 6px var(--ttb-coin-ring),
    var(--ttb-coin-shadow);
}

/* Animation stage */
.ttb-coin-animation {
  display: grid;
  place-items: center;
  margin-top: 18px;
  min-height: clamp(90px, 12vw, 140px); /* keeps layout steady while flipping */
  position: relative;
}

#ttb-coin-flip-image {
  width: clamp(96px, 13vw, 140px);
  height: auto;
  display: block;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  filter: drop-shadow(0 8px 16px rgba(2,6,23,.20));
}

/* Spin animation when flipping. Add/remove .is-spinning on the IMG or parent container */
.ttb-coin-animation .is-spinning,
.ttb-coin-container.is-spinning #ttb-coin-flip-image {
  animation: ttb-coin-spin 1200ms cubic-bezier(.2,.6,.2,1) infinite;
}

@keyframes ttb-coin-spin {
  0%   { transform: rotateY(0turn) translateZ(0); }
  50%  { transform: rotateY(.5turn) translateZ(0); }
  100% { transform: rotateY(1turn) translateZ(0); }
}

/* Result card */
#ttb-coin-result {
  margin-top: 16px;
  text-align: center;
  background: var(--ttb-coin-card);
  color: var(--ttb-coin-text);
  border-radius: var(--ttb-coin-radius);
  padding: clamp(1.1rem, .9rem + 1.8vw, 1.8rem);
  box-shadow: var(--ttb-coin-shadow);
  border: 1px solid rgba(0,0,0,.06);
  font-size: clamp(1.8rem, 1.3rem + 2.6vw, 3.2rem);
  font-weight: 900;
  letter-spacing: .4px;
  line-height: 1;
  min-height: clamp(64px, 8vw, 96px);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}

/* Pop and ring sheen when result updates (toggle .pop / .is-fresh for ~800ms) */
#ttb-coin-result.pop { animation: ttb-coin-pop .28s ease both; }
@keyframes ttb-coin-pop {
  0% { transform: scale(.92); filter: brightness(1.02); }
  60% { transform: scale(1.04); }
  100% { transform: scale(1); }
}
#ttb-coin-result.is-fresh::after {
  content: "";
  position: absolute;
  inset: -2px;
  background: conic-gradient(
    from 0deg,
    transparent 0deg,
    rgba(6,182,212,.25) 120deg,
    rgba(124,58,237,.25) 240deg,
    transparent 360deg
  );
  animation: ttb-coin-sheen 1.1s linear both;
  pointer-events: none;
  mask: radial-gradient(farthest-side, transparent calc(100% - 10px), #000 0);
  border-radius: inherit;
}
@keyframes ttb-coin-sheen { to { transform: rotate(1turn); } }

/* Semantic color states (optional): add to container OR result element */
.ttb-coin-container.is-heads #ttb-coin-result,
#ttb-coin-result.is-heads {
  color: var(--ttb-coin-heads);
  text-shadow: 0 2px 0 rgba(16,185,129,.12);
  border-color: rgba(16,185,129,.25);
}
.ttb-coin-container.is-tails #ttb-coin-result,
#ttb-coin-result.is-tails {
  color: var(--ttb-coin-tails);
  text-shadow: 0 2px 0 rgba(245,158,11,.12);
  border-color: rgba(245,158,11,.25);
}

/* Accessibility: respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  #ttb-flip-coin,
  #ttb-coin-result,
  #ttb-coin-result.is-fresh::after,
  .ttb-coin-sides > div,
  #ttb-coin-flip-image {
    transition: none !important;
    animation: none !important;
  }
}