/* ===================================================
   PLUGIN UI SYSTEM (Single File | Responsive)
   Prefix: pui-
=================================================== */

/* -------------------------
   1. ROOT VARIABLES
------------------------- */
:root {
  --pui-primary: #1C2A54;
  --pui-secondary: #4F6BED;
  --pui-success: #16a34a;
  --pui-danger: #dc2626;
  --pui-bg: #ffffff;
  --pui-muted: #6b7280;

  --pui-font: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;

  --pui-text-sm: 14px;
  --pui-text-md: 16px;
  --pui-text-lg: 20px;

  --pui-radius-sm: 6px;
  --pui-radius-md: 10px;
  --pui-radius-lg: 16px;

  --pui-shadow-sm: 0 4px 10px rgba(0,0,0,.06);
  --pui-shadow-md: 0 10px 30px rgba(0,0,0,.12);
}

/* -------------------------
   2. RESET (SCOPED)
------------------------- */
.pui-wrap,
.pui-wrap * {
  box-sizing: border-box;
  font-family: var(--pui-font);
}

/* -------------------------
   3. LAYOUT
------------------------- */
.pui-container {
  max-width: 1100px;
  margin-inline: auto;
  padding: 16px;
}

.pui-grid {
  display: grid;
  gap: 16px;
}

.pui-grid-2 { grid-template-columns: repeat(2, 1fr); }
.pui-grid-3 { grid-template-columns: repeat(3, 1fr); }
.pui-grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Mobile responsiveness */
@media (max-width: 768px) {
  .pui-grid-2,
  .pui-grid-3,
  .pui-grid-4 {
    grid-template-columns: 1fr;
  }
}

/* -------------------------
   4. CARDS
------------------------- */
.pui-card {
  background: var(--pui-bg);
  border-radius: var(--pui-radius-md);
  padding: 20px;
  box-shadow: var(--pui-shadow-sm);
}

.pui-card-title {
  font-size: var(--pui-text-lg);
  font-weight: 600;
  margin-bottom: 6px;
}

.pui-card-text {
  font-size: var(--pui-text-sm);
  color: var(--pui-muted);
}

/* -------------------------
   5. BUTTONS
------------------------- */
.pui-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  font-size: var(--pui-text-sm);
  border-radius: var(--pui-radius-sm);
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all .2s ease;
}

.pui-btn-primary {
  background: var(--pui-primary);
  color: #fff;
}

.pui-btn-primary:hover {
  opacity: .9;
}

.pui-btn-outline {
  background: transparent;
  border: 1px solid var(--pui-primary);
  color: var(--pui-primary);
}

/* Full width button (mobile friendly) */
.pui-btn-block {
  width: 100%;
}

/* -------------------------
   6. FORMS
------------------------- */
.pui-input,
.pui-select {
  width: 100%;
  padding: 10px 12px;
  font-size: var(--pui-text-sm);
  border-radius: var(--pui-radius-sm);
  border: 1px solid #d1d5db;
  margin-top: 6px;
}

.pui-input:focus,
.pui-select:focus {
  border-color: var(--pui-primary);
  outline: none;
}

/* -------------------------
   7. ALERTS
------------------------- */
.pui-alert {
  padding: 14px 16px;
  border-radius: var(--pui-radius-sm);
  font-size: var(--pui-text-sm);
}

.pui-alert-success {
  background: #ecfdf5;
  color: var(--pui-success);
}

.pui-alert-error {
  background: #fef2f2;
  color: var(--pui-danger);
}

/* -------------------------
   8. UTILITIES
------------------------- */
.pui-text-center { text-align: center; }
.pui-mt-10 { margin-top: 10px; }
.pui-mt-20 { margin-top: 20px; }
.pui-mb-10 { margin-bottom: 10px; }
.pui-fw-bold { font-weight: 600; }

/* -------------------------
   9. MOBILE ENHANCEMENTS
------------------------- */
@media (max-width: 480px) {
  .pui-card {
    padding: 16px;
  }

  .pui-card-title {
    font-size: 18px;
  }

  .pui-btn {
    padding: 12px;
    font-size: 15px;
  }
}