/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 18px;border-radius:var(--radius-sm);font-weight:600;font-size:14px;
  transition:all .18s var(--ease);white-space:nowrap;border:1px solid transparent}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#6b4ce8;box-shadow:0 4px 16px var(--accent-glow)}
.btn-ghost{background:var(--surface2);color:var(--text);border-color:var(--border)}
.btn-ghost:hover{background:var(--surface3);border-color:var(--border2)}
.btn-outline{background:transparent;color:var(--text);border-color:var(--border)}
.btn-outline:hover{background:var(--surface2)}
.btn-danger{background:transparent;color:var(--danger);border-color:var(--border)}
.btn-danger:hover{background:var(--danger-bg)}
.btn-block{width:100%}
.btn-sm{padding:6px 12px;font-size:13px}
.btn-lg{padding:14px 24px;font-size:15px}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* ===== Inputs ===== */
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.field label{font-size:13px;color:var(--text2);font-weight:500}
.field .hint{font-size:12px;color:var(--text3)}
.input,.select,.textarea{
  width:100%;padding:11px 14px;background:var(--surface2);color:var(--text);
  border:1px solid var(--border);border-radius:var(--radius-sm);font-size:14px;
  transition:border-color .15s,background .15s;
}
.input:focus,.select:focus,.textarea:focus{
  outline:0;border-color:var(--accent);background:var(--surface3)
}
.textarea{min-height:88px;resize:vertical;font-family:inherit}
.input::placeholder,.textarea::placeholder{color:var(--text3)}
.input-icon{position:relative}
.input-icon .input{padding-inline-end:40px}
.input-icon button{position:absolute;inset-inline-end:10px;top:50%;transform:translateY(-50%);
  color:var(--text2);padding:4px}

/* ===== Cards ===== */
.card{background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:22px}
.card-hover{transition:all .2s var(--ease)}
.card-hover:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow)}
/* Light mode — add visible shadow so cards lift off the background */
[data-theme="light"] .card{box-shadow:0 1px 3px rgba(0,0,0,.05),0 4px 12px rgba(0,0,0,.06)}
[data-theme="light"] .card-hover:hover{box-shadow:0 4px 24px rgba(124,92,252,.14);border-color:rgba(124,92,252,.35)}
.card-title{display:flex;align-items:center;justify-content:space-between;
  margin-bottom:16px;gap:12px}
.card-title h3{font-size:16px}

/* ===== Badges / Pills ===== */
.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;
  border-radius:999px;font-size:12px;font-weight:600}
.badge-success{background:var(--success-bg);color:var(--success)}
.badge-danger{background:var(--danger-bg);color:var(--danger)}
.badge-warning{background:var(--warning-bg);color:var(--warning)}
.badge-info{background:var(--info-bg);color:var(--info)}
.badge-muted{background:var(--surface2);color:var(--text2);border:1px solid var(--border)}
.badge-accent{background:rgba(124,92,252,.15);color:var(--accent2)}

.pill{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;
  border-radius:999px;background:var(--surface2);border:1px solid var(--border);
  color:var(--text);font-size:13px;font-weight:500}
.pill-accent{background:rgba(124,92,252,.12);border-color:rgba(124,92,252,.3);color:var(--accent2)}

/* ===== Tabs ===== */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:20px;
  overflow-x:auto}
.tab{padding:10px 18px;color:var(--text2);font-weight:500;font-size:14px;
  border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap;transition:all .15s}
.tab:hover{color:var(--text)}
.tab.active{color:var(--accent2);border-color:var(--accent)}

/* ===== Modal ===== */
.modal-overlay{position:fixed;inset:0;background:var(--overlay);
  backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;
  z-index:100;padding:20px;opacity:0;pointer-events:none;transition:opacity .2s}
.modal-overlay.open{opacity:1;pointer-events:auto}
.modal{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  width:100%;max-width:560px;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow-lg);
  transform:translateY(10px);transition:transform .2s}
.modal-overlay.open .modal{transform:translateY(0)}
.modal-lg{max-width:780px}
.modal-header{padding:20px 24px;border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between}
.modal-header h3{font-size:17px}
.modal-close{color:var(--text2);padding:6px;border-radius:6px}
.modal-close:hover{background:var(--surface2);color:var(--text)}
.modal-body{padding:22px 24px}
.modal-footer{padding:16px 24px;border-top:1px solid var(--border);
  display:flex;justify-content:flex-end;gap:10px}

/* ===== Proficiency bar ===== */
.prof{display:flex;align-items:center;gap:12px}
.prof-bar{flex:1;height:8px;background:var(--surface2);border-radius:999px;overflow:hidden}
.prof-fill{height:100%;border-radius:999px;transition:width .5s var(--ease)}
.prof-fill.beginner{background:linear-gradient(90deg,#f87171,#fbbf24)}
.prof-fill.intermediate{background:linear-gradient(90deg,#fbbf24,#60a5fa)}
.prof-fill.advanced{background:linear-gradient(90deg,#60a5fa,var(--accent))}
.prof-fill.expert{background:linear-gradient(90deg,var(--accent),var(--accent2))}
.prof-score{font-family:var(--mono);font-weight:600;min-width:40px;text-align:end}

/* ===== Stat card ===== */
.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px 20px;display:flex;flex-direction:column;gap:6px}
.stat-label{font-size:12px;color:var(--text2);text-transform:uppercase;letter-spacing:.5px}
.stat-value{font-size:28px;font-weight:700;font-family:var(--mono)}

/* ===== Avatar ===== */
.avatar{width:48px;height:48px;border-radius:50%;
  background:linear-gradient(135deg,var(--accent),var(--accent2));
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;
  flex-shrink:0}
.avatar-lg{width:72px;height:72px;font-size:24px}
.avatar-xl{width:96px;height:96px;font-size:32px}

/* ===== Toasts ===== */
.toast-host{position:fixed;top:20px;inset-inline-end:20px;z-index:200;
  display:flex;flex-direction:column;gap:10px}
.toast{background:var(--surface);border:1px solid var(--border);
  border-inline-start:3px solid var(--accent);border-radius:var(--radius-sm);
  padding:12px 18px;box-shadow:var(--shadow);min-width:260px;max-width:400px;
  animation:toast-in .25s var(--ease)}
.toast.success{border-inline-start-color:var(--success)}
.toast.error{border-inline-start-color:var(--danger)}
@keyframes toast-in{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:none}}
[dir="rtl"] .toast{animation:toast-in-rtl .25s var(--ease)}
@keyframes toast-in-rtl{from{opacity:0;transform:translateX(-20px)}to{opacity:1;transform:none}}

/* ===== Utility ===== */
.row{display:flex;gap:12px;align-items:center}
.row-between{display:flex;gap:12px;align-items:center;justify-content:space-between}
.col{display:flex;flex-direction:column;gap:12px}
.grid{display:grid;gap:16px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-5{grid-template-columns:repeat(5,1fr)}
@media(max-width:900px){.grid-3,.grid-4,.grid-5{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.grid-2,.grid-3,.grid-4,.grid-5{grid-template-columns:1fr}}
.gap-sm{gap:8px}.gap-lg{gap:20px}
.mt-sm{margin-top:8px}.mt{margin-top:16px}.mt-lg{margin-top:24px}
.divider{height:1px;background:var(--border);margin:16px 0}
.empty{padding:40px 20px;text-align:center;color:var(--text2)}
.empty-icon{font-size:40px;margin-bottom:12px;opacity:.5}
.spinner{width:18px;height:18px;border:2px solid var(--border);
  border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.page-loader{display:flex;align-items:center;justify-content:center;padding:60px;color:var(--text2)}

/* ===== Mobile ===== */
@media(max-width:640px){
  /* Touch-friendly targets */
  .btn{min-height:44px}
  .btn-sm{min-height:38px;padding:8px 14px}
  .btn-lg{min-height:50px}
  /* Prevent iOS input zoom (font < 16px triggers auto-zoom on Safari) */
  .input,.select,.textarea{font-size:16px}
  /* Card padding */
  .card{padding:16px}
  .stat{padding:14px 16px}
  .stat-value{font-size:22px}
  /* Modal as bottom sheet */
  .modal-overlay{padding:0;align-items:flex-end}
  .modal,.modal-lg{max-width:100%;border-radius:var(--radius-lg) var(--radius-lg) 0 0;max-height:92vh}
  .modal-header{padding:14px 20px}
  .modal-body{padding:16px 20px}
  .modal-footer{padding:12px 20px;flex-wrap:wrap;gap:8px}
  .modal-footer .btn{flex:1;justify-content:center}
  /* Tabs: scroll horizontally instead of wrapping/clipping */
  .tabs{flex-wrap:nowrap;-webkit-overflow-scrolling:touch}
  .tab{flex-shrink:0}
}