/* ================================================================= */
/* Shared UI Components — shared/frontend/css/components.css          */
/* ================================================================= */
/* Reusable component classes: buttons, inputs, cards, badges,        */
/* tooltips, dividers, and loading states.                            */
/* ================================================================= */

/* ── Buttons ────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius, 12px);
  font-size: var(--text-base, 14px);
  font-weight: var(--font-semibold, 600);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  text-decoration: none;
  line-height: 1.2;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* Primary — filled gradient */
.btn-primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  color: #fff;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.25);
}
.btn-primary:hover:not(:disabled) {
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.35);
  transform: translateY(-1px);
}
.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

/* Secondary — outlined */
.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--color-accent);
  color: #fff;
}

/* Ghost — minimal */
.btn-ghost {
  background: transparent;
  color: var(--color-fg-2);
}
.btn-ghost:hover:not(:disabled) {
  background: var(--color-bg-2);
  color: var(--color-fg);
}

/* Danger */
.btn-danger {
  background: var(--color-red);
  color: #fff;
}
.btn-danger:hover:not(:disabled) {
  opacity: 0.9;
}

/* Sizes */
.btn-sm { padding: 7px 14px; font-size: var(--text-sm); border-radius: 8px; }
.btn-lg { padding: 14px 28px; font-size: var(--text-md); border-radius: var(--radius-lg); }
.btn-icon { padding: 8px; border-radius: var(--radius); }
.btn-pill { border-radius: var(--radius-full); }

/* Block (full width) */
.btn-block { width: 100%; }


/* ── Inputs ─────────────────────────────────────────────────────── */

.input {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--color-bg-3);
  border-radius: 10px;
  font-size: var(--text-base);
  color: var(--color-fg);
  background: var(--color-bg);
  outline: none;
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}
.input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-bg);
}
.input::placeholder {
  color: var(--color-fg-3);
}
.input-error {
  border-color: var(--color-red) !important;
}

/* Input with icon */
.input-group {
  position: relative;
}
.input-group .input {
  padding-left: 36px;
}
.input-group .input-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-fg-3);
  pointer-events: none;
  width: 16px;
  height: 16px;
}

/* Select */
.select {
  appearance: none;
  width: 100%;
  padding: 10px 36px 10px 14px;
  border: 1.5px solid var(--color-bg-3);
  border-radius: 10px;
  font-size: var(--text-base);
  color: var(--color-fg);
  background: var(--color-bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239d9db0' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 12px center;
  cursor: pointer;
  transition: border-color var(--duration-fast);
}
.select:focus {
  border-color: var(--color-accent);
  outline: none;
}


/* ── Cards ──────────────────────────────────────────────────────── */

.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.04);
}
.card-hover {
  transition: var(--transition);
}
.card-hover:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card-glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}


/* ── Badges ─────────────────────────────────────────────────────── */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.badge-accent  { background: var(--color-accent-bg); color: var(--color-accent); }
.badge-green   { background: rgba(34, 197, 94, 0.1); color: var(--color-green); }
.badge-red     { background: rgba(239, 68, 68, 0.1); color: var(--color-red); }
.badge-orange  { background: rgba(245, 158, 11, 0.1); color: var(--color-orange); }
.badge-neutral { background: var(--color-bg-2); color: var(--color-fg-2); }


/* ── Dividers ───────────────────────────────────────────────────── */

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-fg-3);
  font-size: var(--text-sm);
}
.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-bg-3);
}


/* ── Avatar ─────────────────────────────────────────────────────── */

.avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-bold);
  font-size: var(--text-base);
  background: var(--color-accent);
  color: #fff;
  flex-shrink: 0;
}
.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.avatar-sm { width: 28px; height: 28px; font-size: var(--text-sm); }
.avatar-lg { width: 48px; height: 48px; font-size: var(--text-lg); }


/* ── Skeleton loading ───────────────────────────────────────────── */

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-2) 25%,
    var(--color-bg-3) 50%,
    var(--color-bg-2) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s ease infinite;
  border-radius: var(--radius-sm);
}
@keyframes skeleton-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-text  { height: 14px; width: 70%; margin-bottom: 8px; }
.skeleton-title { height: 22px; width: 50%; margin-bottom: 12px; }
.skeleton-avatar { width: 40px; height: 40px; border-radius: 50%; }
.skeleton-card { height: 120px; }


/* ── Spinner ────────────────────────────────────────────────────── */

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-bg-3);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.spinner-sm { width: 16px; height: 16px; border-width: 2px; }
.spinner-lg { width: 36px; height: 36px; border-width: 4px; }


/* ── Tooltips (CSS-only, no JS needed) ──────────────────────────── */

[data-tooltip] {
  position: relative;
}
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) scale(0.95);
  padding: 6px 12px;
  background: var(--color-fg);
  color: var(--color-bg);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--duration-fast), transform var(--duration-fast);
}
[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}