/* ==========================================================================
   Chess Academy — Base / Shared Variables & Utilities
   ========================================================================== */

:root {
  --ca-primary:       #1a56a0;
  --ca-primary-dark:  #0f3d7a;
  --ca-primary-light: #e8f0fb;
  --ca-secondary:     #4a5568;
  --ca-accent:        #f6ad3c;
  --ca-success:       #27ae60;
  --ca-danger:        #e53e3e;
  --ca-warning:       #dd6b20;
  --ca-info:          #2b6cb0;

  /* Light theme */
  --ca-bg:            #f7f9fc;
  --ca-surface:       #ffffff;
  --ca-border:        #e2e8f0;
  --ca-text:          #1a202c;
  --ca-text-muted:    #718096;
  --ca-shadow:        0 2px 8px rgba(0,0,0,.08);
  --ca-shadow-md:     0 4px 16px rgba(0,0,0,.12);

  --ca-radius:        10px;
  --ca-radius-sm:     6px;
  --ca-radius-lg:     16px;

  --ca-font:          -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Dark theme overrides */
.ca-dark {
  --ca-bg:          #0f1117;
  --ca-surface:     #1a1d27;
  --ca-border:      #2d3748;
  --ca-text:        #e2e8f0;
  --ca-text-muted:  #a0aec0;
  --ca-shadow:      0 2px 8px rgba(0,0,0,.3);
  --ca-shadow-md:   0 4px 16px rgba(0,0,0,.4);
  --ca-primary-light: #1a2744;
}

/* --------------------------------------------------------------------------
   Reset
   -------------------------------------------------------------------------- */
.ca-dashboard *,
.ca-tactics-page *,
.ca-pricing-page *,
.ca-checkout-page * {
  box-sizing: border-box;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.ca-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--ca-radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: background .15s, transform .1s, opacity .15s;
  font-family: var(--ca-font);
  white-space: nowrap;
}
.ca-btn:hover  { opacity: .9; transform: translateY(-1px); }
.ca-btn:active { transform: translateY(0); }

.ca-btn-primary   { background: var(--ca-primary); color: #fff; }
.ca-btn-secondary { background: var(--ca-border); color: var(--ca-text); }
.ca-btn-danger    { background: var(--ca-danger); color: #fff; }
.ca-btn-disabled  { background: var(--ca-border); color: var(--ca-text-muted); cursor: not-allowed; opacity: .7; }
.ca-btn-sm        { padding: 6px 12px; font-size: 13px; }
.ca-btn-lg        { padding: 14px 28px; font-size: 16px; }
.ca-btn-block     { width: 100%; justify-content: center; }

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.ca-card {
  background: var(--ca-surface);
  border: 1px solid var(--ca-border);
  border-radius: var(--ca-radius);
  padding: 24px;
  box-shadow: var(--ca-shadow);
}

/* --------------------------------------------------------------------------
   Badges
   -------------------------------------------------------------------------- */
.ca-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}
.ca-badge-active    { background: #c6f6d5; color: #276749; }
.ca-badge-inactive  { background: #fed7d7; color: #9b2c2c; }
.ca-badge-warning   { background: #feebc8; color: #7b341e; }
.ca-badge-completed { background: #bee3f8; color: #2a4365; }

/* --------------------------------------------------------------------------
   Progress bars
   -------------------------------------------------------------------------- */
.ca-progress-bar {
  background: var(--ca-border);
  border-radius: 20px;
  height: 8px;
  overflow: hidden;
  width: 100%;
}
.ca-progress-fill {
  height: 100%;
  background: var(--ca-primary);
  border-radius: 20px;
  transition: width .4s ease;
}
.ca-progress-bar-sm { height: 6px; width: 100px; display: inline-block; vertical-align: middle; margin-right: 8px; }

/* --------------------------------------------------------------------------
   Toggle switch
   -------------------------------------------------------------------------- */
.ca-switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
}
.ca-switch input { opacity: 0; width: 0; height: 0; }
.ca-switch-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: var(--ca-border);
  border-radius: 26px;
  transition: background .2s;
}
.ca-switch-slider::before {
  content: '';
  position: absolute;
  height: 20px; width: 20px;
  left: 3px; bottom: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform .2s;
  box-shadow: 0 1px 3px rgba(0,0,0,.2);
}
.ca-switch input:checked + .ca-switch-slider { background: var(--ca-primary); }
.ca-switch input:checked + .ca-switch-slider::before { transform: translateX(22px); }

/* --------------------------------------------------------------------------
   Tables
   -------------------------------------------------------------------------- */
.ca-data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.ca-data-table th {
  background: var(--ca-primary-light);
  color: var(--ca-primary);
  font-weight: 600;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 2px solid var(--ca-border);
}
.ca-data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--ca-border);
  color: var(--ca-text);
}
.ca-data-table tr:hover td { background: var(--ca-primary-light); }
.ca-table-wrap { overflow-x: auto; }

/* --------------------------------------------------------------------------
   Forms
   -------------------------------------------------------------------------- */
.ca-input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--ca-border);
  border-radius: var(--ca-radius-sm);
  font-size: 14px;
  font-family: var(--ca-font);
  background: var(--ca-surface);
  color: var(--ca-text);
  transition: border-color .15s;
}
.ca-input:focus {
  outline: none;
  border-color: var(--ca-primary);
  box-shadow: 0 0 0 3px rgba(26,86,160,.15);
}

.ca-form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.ca-form-group label {
  font-size: 14px;
  font-weight: 600;
  color: var(--ca-text);
}
.ca-field-hint {
  font-size: 12px;
  color: var(--ca-text-muted);
}

/* --------------------------------------------------------------------------
   Overlay / Modals
   -------------------------------------------------------------------------- */
.ca-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.75);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ca-overlay-inner {
  background: var(--ca-surface);
  border-radius: var(--ca-radius-lg);
  width: 90%;
  max-width: 900px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px;
  position: relative;
}
.ca-overlay-close {
  position: absolute;
  top: 16px; right: 16px;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--ca-text-muted);
}

.ca-modal { position: relative; z-index: 10000; }
.ca-modal-inner {
  background: var(--ca-surface);
  border-radius: var(--ca-radius-lg);
  padding: 32px;
  max-width: 480px;
  width: 90%;
  margin: auto;
  position: fixed;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  z-index: 10001;
  box-shadow: var(--ca-shadow-md);
}
.ca-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 10000;
}
.ca-modal-actions { display: flex; gap: 12px; margin-top: 20px; }

/* --------------------------------------------------------------------------
   Empty state
   -------------------------------------------------------------------------- */
.ca-empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--ca-text-muted);
}
.ca-empty-state p { margin-bottom: 16px; }

/* --------------------------------------------------------------------------
   Status badges for puzzle sets
   -------------------------------------------------------------------------- */
.ca-status-badge { display: inline-block; padding: 2px 8px; border-radius: 12px; font-size: 12px; font-weight: 600; }
.ca-status-completed  { background: #c6f6d5; color: #276749; }
.ca-status-in_progress { background: #feebc8; color: #7b341e; }
.ca-status-not_started { background: var(--ca-border); color: var(--ca-text-muted); }

/* --------------------------------------------------------------------------
   Login / Membership prompts
   -------------------------------------------------------------------------- */
.ca-login-prompt,
.ca-membership-prompt {
  display: flex;
  justify-content: center;
  padding: 48px 24px;
}
.ca-icon-xl { font-size: 64px; margin-bottom: 16px; display: block; }
.ca-text-center { text-align: center; }
.ca-btn-row { display: flex; gap: 12px; justify-content: center; margin-top: 20px; }