*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--horizon-bg);
  color: var(--horizon-text);
  line-height: 1.5;
  min-height: 100vh;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01" on, "cv11" on;
}

/* Scrollbars */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--horizon-border-strong) transparent;
}
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--horizon-border-strong); border-radius: var(--radius-sm); }
::-webkit-scrollbar-thumb:hover { background: var(--horizon-soft-dim); }

/* Focus */
*:focus { outline: none; }
*:focus-visible {
  outline: 2px solid var(--horizon-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Starfield */
.horizon-starfield {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(1px 1px at 17% 12%, rgba(255,255,255,0.65) 50%, transparent 100%),
    radial-gradient(1px 1px at 63% 8%,  rgba(255,255,255,0.42) 50%, transparent 100%),
    radial-gradient(1px 1px at 84% 24%, rgba(255,255,255,0.55) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 41% 32%, rgba(3,161,239,0.45) 50%, transparent 100%),
    radial-gradient(1px 1px at 8% 45%,  rgba(255,255,255,0.32) 50%, transparent 100%),
    radial-gradient(1px 1px at 92% 58%, rgba(255,255,255,0.48) 50%, transparent 100%),
    radial-gradient(1px 1px at 27% 72%, rgba(255,255,255,0.38) 50%, transparent 100%),
    radial-gradient(1.5px 1.5px at 68% 80%, rgba(228,111,113,0.40) 50%, transparent 100%),
    radial-gradient(1px 1px at 52% 91%, rgba(255,255,255,0.52) 50%, transparent 100%),
    radial-gradient(1px 1px at 14% 96%, rgba(255,255,255,0.28) 50%, transparent 100%),
    radial-gradient(1px 1px at 38% 55%, rgba(255,255,255,0.36) 50%, transparent 100%),
    radial-gradient(1px 1px at 76% 42%, rgba(255,255,255,0.44) 50%, transparent 100%);
  opacity: 0.9;
  animation: horizon-starfield-breathe 14s ease-in-out infinite;
}

.horizon-starfield::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 45% at 20% 12%, rgba(3,161,239,0.14), transparent 70%),
    radial-gradient(ellipse 55% 50% at 88% 78%, rgba(228,111,113,0.08), transparent 72%),
    radial-gradient(ellipse 100% 60% at 50% 120%, rgba(3,161,239,0.06), transparent 70%);
  pointer-events: none;
}

@keyframes horizon-starfield-breathe {
  0%, 100% { opacity: 0.72; }
  50%       { opacity: 1; }
}

/* Typography classes */
.horizon-display--xl {
  font-family: var(--font-display);
  font-size: clamp(3rem, 7vw, 5.75rem);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.02em;
  font-optical-sizing: auto;
}
.horizon-display--lg {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.02em;
  font-optical-sizing: auto;
}
.horizon-display--md {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2.1rem);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.02em;
  font-optical-sizing: auto;
}
.horizon-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.28em;
  color: var(--horizon-soft);
}
.horizon-mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  padding: 0.7rem 1.2rem;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}
.btn:disabled { opacity: 0.32; cursor: not-allowed; }

.btn--primary {
  background: var(--horizon-accent);
  color: #001523;
  box-shadow: 0 0 0 1px var(--horizon-accent-dim), var(--glow-accent);
}
.btn--primary:hover:not(:disabled) {
  background: var(--horizon-accent-bright);
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px var(--horizon-accent-bright), 0 0 44px rgba(3,161,239,0.42);
}
.btn--primary:active:not(:disabled) { transform: translateY(0); }

.btn--ghost {
  background: transparent;
  color: var(--horizon-text);
  border: 1px solid var(--horizon-border);
}
.btn--ghost:hover:not(:disabled) {
  border-color: var(--horizon-border-strong);
  background: var(--horizon-bg-hover);
}

.btn--solo {
  background: transparent;
  color: var(--horizon-text-dim);
  border: 1px dashed var(--horizon-border);
  font-size: 0.82rem;
}
.btn--solo:hover:not(:disabled) {
  color: var(--horizon-text);
  border-color: var(--horizon-border-strong);
}

.btn--danger {
  background: transparent;
  color: var(--horizon-warm);
  border: 1px solid var(--horizon-warm-dim);
}
.btn--danger:hover:not(:disabled) {
  background: var(--horizon-warm-glow);
}

.btn--icon {
  background: transparent;
  color: var(--horizon-text-dim);
  border: none;
  padding: 0.35rem;
  border-radius: var(--radius-sm);
}
.btn--icon:hover:not(:disabled) {
  color: var(--horizon-text);
  background: var(--horizon-bg-hover);
}

/* Form fields */
.field { display: flex; flex-direction: column; gap: 0.4rem; }
.field__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--horizon-soft);
}
.field__input,
.field__textarea {
  padding: 0.9rem 1rem;
  background: var(--horizon-bg-card);
  border: 1px solid var(--horizon-border);
  border-radius: var(--radius-md);
  color: var(--horizon-text-bright);
  font-size: 0.95rem;
  font-weight: 500;
  font-family: var(--font-sans);
  transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  width: 100%;
}
.field__input:hover,
.field__textarea:hover { border-color: var(--horizon-border-strong); }
.field__input:focus,
.field__textarea:focus {
  border-color: var(--horizon-accent);
  background: var(--horizon-bg-overlay);
  box-shadow: 0 0 0 4px rgba(3,161,239,0.12), 0 0 24px rgba(3,161,239,0.14);
}
.field__textarea { resize: vertical; min-height: 100px; line-height: 1.6; }

/* Animations */
@keyframes horizon-fade-up {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes horizon-pop-in {
  0%   { opacity: 0; transform: scale(0.85); }
  70%  { transform: scale(1.03); }
  100% { opacity: 1; transform: scale(1); }
}

.horizon-stagger > * {
  animation: horizon-fade-up 0.6s cubic-bezier(0.2, 0.9, 0.3, 1) both;
}
.horizon-stagger > *:nth-child(1) { animation-delay: 0.05s; }
.horizon-stagger > *:nth-child(2) { animation-delay: 0.15s; }
.horizon-stagger > *:nth-child(3) { animation-delay: 0.25s; }
.horizon-stagger > *:nth-child(4) { animation-delay: 0.35s; }
.horizon-stagger > *:nth-child(5) { animation-delay: 0.45s; }
.horizon-stagger > *:nth-child(6) { animation-delay: 0.55s; }

/* Toast */
.toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(-80px);
  background: var(--horizon-bg-card);
  color: var(--horizon-text-bright);
  padding: 0.9rem 1.4rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--horizon-warm);
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: var(--shadow-card), var(--glow-warm);
  z-index: 2000;
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s cubic-bezier(0.2, 0.9, 0.3, 1);
  pointer-events: none;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.toast--success {
  border-color: var(--horizon-success);
  box-shadow: var(--shadow-card), 0 0 32px rgba(134,239,172,0.2);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}