/**
 * Kratevia Logo - Unified PNG rendering (transparent background)
 * Applies consistent sizing with optional micro-hover state.
 */

/* Base logo container */
.ks-logo {
  --ks-logo-size: 32px;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
  text-decoration: none;
  color: var(--text-primary);
  line-height: 1;
}

.header-logo.ks-logo {
  gap: var(--space-2);
}

.ks-logo-wordmark {
  display: inline-flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 0.45rem;
  min-width: 0;
}

.ks-logo-icon-link,
.ks-logo-text-link,
.ks-logo-plus-link {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  text-decoration: none;
  color: inherit;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), filter var(--transition-fast), text-shadow var(--transition-fast);
}

/* Logo mark image */
.ks-logo-icon {
  display: block;
  flex-shrink: 0;
  height: var(--ks-logo-size);
  width: auto;
  filter: none;
  transition: filter 0.35s ease;
}

.ks-logo-icon-link:hover .ks-logo-icon,
.ks-logo-icon-link:focus-visible .ks-logo-icon {
  filter: drop-shadow(0 0 12px rgba(253, 230, 138, 0.55)) drop-shadow(0 2px 8px rgba(11, 12, 15, 0.25));
}

/* Logo text */
.ks-logo-text {
  font-family: var(--font-display);
  font-weight: var(--font-semibold);
  letter-spacing: -0.01em;
  background-image: linear-gradient(90deg, var(--gold-text-start), var(--gold-text-mid), var(--gold-text-end));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  background-size: 150% 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background-position 0.4s ease, filter 0.3s ease, text-shadow 0.3s ease;
}

.ks-logo-text-link:hover .ks-logo-text,
.ks-logo-text-link:focus-visible .ks-logo-text {
  background-position: 100% 50%;
  filter: brightness(1.08);
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.35);
}

/* Plus brand slot — base: plain inline text, aligned at baseline */
.ks-logo-plus-link {
  display: inline-flex;
  align-items: flex-end;
  align-self: flex-end;
  flex: 0 0 auto;
  white-space: nowrap;
  padding: 0 0 0.1em;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  box-shadow: none;
  position: relative;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

/* Free CTA: compact pill to invite upgrade */
.ks-logo-plus-link[data-plan-state='free'],
.ks-logo-plus-link.is-plus-cta {
  align-items: center;
  align-self: center;
  padding: 0.18rem 0.52rem;
  border: 1px solid color-mix(in srgb, var(--accent-500) 28%, var(--border-default));
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface-primary) 88%, rgba(217, 119, 6, 0.1));
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}

[data-theme='dark'] .ks-logo-plus-link[data-plan-state='free'],
body.dark-theme .ks-logo-plus-link[data-plan-state='free'],
[data-theme='dark'] .ks-logo-plus-link.is-plus-cta,
body.dark-theme .ks-logo-plus-link.is-plus-cta {
  background: color-mix(in srgb, var(--surface-secondary) 84%, rgba(217, 119, 6, 0.12));
  border-color: color-mix(in srgb, var(--accent-500) 34%, var(--border-default));
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.18);
}

/* Plus text base */
.ks-logo-plus {
  font-weight: var(--font-semibold);
  font-size: 0.72em;
  letter-spacing: 0.13em;
  line-height: 1;
  text-transform: uppercase;
  white-space: nowrap;
  color: color-mix(in srgb, var(--accent-500) 92%, #8a5a00);
  background: none;
  -webkit-text-fill-color: currentColor;
  text-shadow: none;
  transition: color 0.3s ease, text-shadow 0.3s ease, background-position 0.5s ease;
}

/* Active Plus: gold gradient text, no pill */
.ks-logo-plus-link[data-plan-state='plus'] .ks-logo-plus,
.ks-logo-plus-link.is-plus-active .ks-logo-plus {
  background-image: linear-gradient(90deg,
    var(--gold-text-mid) 0%,
    var(--gold-text-end) 0%,
    rgba(252, 223, 174, 0.98) 45%,
    rgba(196, 119, 32, 0.95) 75%,
    rgba(177, 98, 20, 0.98) 100%);
  background-size: 250% 100%;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  text-shadow: none;
}

.ks-logo-plus-link[data-plan-state='plus'] .ks-logo-plus.ks-shine-text,
.ks-logo-plus-link.is-plus-active .ks-logo-plus.ks-shine-text {
  animation: ks-logo-plus-sweep 4s linear infinite;
}

/* Free CTA text color */
.ks-logo-plus-link[data-plan-state='free'] .ks-logo-plus,
.ks-logo-plus-link.is-plus-cta .ks-logo-plus {
  color: color-mix(in srgb, var(--accent-500) 86%, #7a4d00);
}

.ks-logo-plus::after {
  content: none;
}

/* Hover states */
.ks-logo-plus-link:hover,
.ks-logo-plus-link:focus-visible {
  transform: translateY(-1px);
}

.ks-logo-plus-link[data-plan-state='free']:hover,
.ks-logo-plus-link[data-plan-state='free']:focus-visible,
.ks-logo-plus-link.is-plus-cta:hover,
.ks-logo-plus-link.is-plus-cta:focus-visible {
  border-color: rgba(217, 119, 6, 0.58);
  background: color-mix(in srgb, var(--surface-primary) 80%, rgba(217, 119, 6, 0.14));
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.08);
}

.ks-logo-plus-link:hover .ks-logo-plus,
.ks-logo-plus-link:focus-visible .ks-logo-plus {
  text-shadow: 0 0 14px rgba(251, 191, 36, 0.55);
}

@keyframes ks-logo-plus-sweep {
  0% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes logo-plus-shimmer {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 120% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* Size variants */

/* Small - Header & Navigation (≈32px tall) */
.ks-logo.is-sm {
  --ks-logo-size: 32px;
}

.ks-logo.is-sm .ks-logo-text {
  font-size: var(--text-lg);
}

/* Medium - Sidebar & header contexts (≈52px tall) */
.ks-logo.is-md {
  --ks-logo-size: 52px;
}

.ks-logo.is-md .ks-logo-text {
  font-size: calc(var(--text-xl) * 1.2);
}

/* Large - Landing nav / footer highlight (≈64px tall) */
.ks-logo.is-lg {
  --ks-logo-size: 64px;
}

.ks-logo.is-lg .ks-logo-text {
  font-size: var(--text-3xl);
}

/* Extra large - Auth hero / special contexts (≈80px tall) */
.ks-logo.is-xl {
  --ks-logo-size: 80px;
}

.ks-logo.is-xl .ks-logo-text {
  font-size: var(--text-4xl);
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .ks-logo.is-lg {
    --ks-logo-size: 56px;
  }

  .ks-logo.is-lg .ks-logo-text {
    font-size: var(--text-2xl);
  }
  
  .ks-logo.is-xl {
    --ks-logo-size: 72px;
  }

  .ks-logo.is-xl .ks-logo-text {
    font-size: var(--text-3xl);
  }
}

/* Focus state for accessibility */
.ks-logo-icon-link:focus-visible,
.ks-logo-text-link:focus-visible,
.ks-logo-plus-link:focus-visible {
  outline: 2px solid var(--accent-500);
  outline-offset: 4px;
}