/* ============================================================
   UI COMPONENT STYLES — Button, Input, Toast, Modal
   ============================================================ */

/* ── Button ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  border-radius: var(--radius-md);
  transition: all var(--dur-base) var(--ease-smooth);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  user-select: none;
}

/* Shimmer on hover */
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,0.06) 50%, transparent 60%);
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-smooth);
}
.btn:hover::after { opacity: 1; }

/* Sizes */
.btn--sm { padding: var(--space-2) var(--space-4); font-size: var(--text-sm); }
.btn--md { padding: var(--space-3) var(--space-6); font-size: var(--text-base); }
.btn--lg { padding: var(--space-4) var(--space-8); font-size: var(--text-lg); min-width: 180px; }

/* Variants */
.btn--primary {
  background: linear-gradient(135deg, var(--navy-500) 0%, var(--navy-600) 100%);
  color: #fff;
  box-shadow: 0 4px 20px rgba(30, 111, 168, 0.4), var(--shadow-inset);
  border: 1px solid rgba(94, 176, 232, 0.2);
}
.btn--primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--navy-400) 0%, var(--navy-500) 100%);
  box-shadow: 0 6px 28px rgba(30, 111, 168, 0.55), var(--shadow-inset);
  transform: translateY(-1px);
}
.btn--primary:active:not(:disabled) { transform: translateY(0); }

.btn--secondary {
  background: var(--glass-bg);
  color: var(--navy-200);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
}
.btn--secondary:hover:not(:disabled) {
  background: var(--glass-hover);
  border-color: rgba(185, 217, 242, 0.25);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--navy-300);
  border: 1px solid transparent;
}
.btn--ghost:hover:not(:disabled) {
  background: var(--glass-hover);
  border-color: var(--glass-border);
}

.btn--danger {
  background: linear-gradient(135deg, rgba(214,40,40,0.7) 0%, rgba(139,0,0,0.7) 100%);
  color: #fff;
  border: 1px solid rgba(214,40,40,0.3);
  box-shadow: 0 4px 20px rgba(214,40,40,0.25);
}
.btn--danger:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--hit) 0%, rgba(139,0,0,0.9) 100%);
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none !important;
}

.btn__icon { display: flex; align-items: center; }
.btn__icon svg { width: 16px; height: 16px; }

/* ── Input ── */
.input-group { display: flex; flex-direction: column; gap: var(--space-2); }
.input-label { display: block; }

.input-inner {
  position: relative;
  display: flex;
  align-items: center;
  background: rgba(6, 14, 28, 0.5);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: all var(--dur-base) var(--ease-smooth);
  backdrop-filter: blur(8px);
}
.input-inner:focus-within {
  border-color: rgba(94, 176, 232, 0.5);
  box-shadow: 0 0 0 3px rgba(30, 111, 168, 0.15), 0 4px 16px rgba(6,14,28,0.4);
  background: rgba(6, 14, 28, 0.7);
}
.input-inner--error {
  border-color: rgba(214, 40, 40, 0.5) !important;
  box-shadow: 0 0 0 3px rgba(214, 40, 40, 0.1) !important;
}

.input-field {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  background: transparent;
  border: none;
  outline: none;
  color: var(--navy-100);
  font-family: var(--font-body);
  font-size: var(--text-base);
}
.input-field::placeholder { color: var(--gray-400); }
.input-error { font-size: var(--text-sm); color: var(--hit-light); margin-top: 2px; }

/* ── Number Input ── */
.number-input-group { display: flex; flex-direction: column; gap: var(--space-2); }
.number-input-ctrl {
  display: flex;
  align-items: center;
  gap: 0;
  background: rgba(6, 14, 28, 0.5);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  width: fit-content;
}
.number-btn {
  padding: var(--space-2) var(--space-4);
  color: var(--navy-300);
  font-size: var(--text-lg);
  font-weight: 300;
  transition: background var(--dur-fast) var(--ease-smooth);
  min-width: 40px;
}
.number-btn:hover { background: var(--glass-hover); }
.number-display {
  padding: var(--space-2) var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--navy-100);
  min-width: 50px;
  text-align: center;
  border-left: 1px solid var(--glass-border);
  border-right: 1px solid var(--glass-border);
}

/* ── Toast ── */
#toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  z-index: 9999;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  backdrop-filter: var(--glass-blur);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  opacity: 0;
  transform: translateY(12px) scale(0.96);
  transition: all var(--dur-base) var(--ease-spring);
  max-width: 320px;
  box-shadow: var(--shadow-md);
  pointer-events: auto;
}
.toast--visible { opacity: 1; transform: translateY(0) scale(1); }

.toast--info    { background: rgba(11,30,54,0.92); border: 1px solid var(--glass-border); color: var(--navy-200); }
.toast--success { background: rgba(11,30,54,0.92); border: 1px solid rgba(30,111,168,0.4); color: var(--navy-200); }
.toast--error   { background: rgba(30,8,8,0.92);   border: 1px solid rgba(214,40,40,0.4); color: #FFB5B5; }
.toast--hit     { background: rgba(50,5,5,0.95);   border: 1px solid rgba(214,40,40,0.5); color: #FFB5B5; }
.toast--miss    { background: rgba(11,30,54,0.92); border: 1px solid var(--glass-border); color: var(--gray-300); }

.toast__icon { font-size: 1rem; flex-shrink: 0; }
.toast__msg  { line-height: 1.4; }

/* ── Modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(6, 14, 28, 0.8);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-smooth);
}
.modal-overlay--visible { opacity: 1; }

.modal-card {
  width: 100%;
  max-width: 480px;
  padding: var(--space-8);
  animation: scaleIn var(--dur-base) var(--ease-spring) both;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.modal-close {
  color: var(--gray-400);
  font-size: var(--text-lg);
  transition: color var(--dur-fast);
  padding: var(--space-1) var(--space-2);
}
.modal-close:hover { color: var(--navy-100); }

.modal-body { display: flex; flex-direction: column; gap: var(--space-4); }