/* ==========================================================================
   NEWTON THE TUTOR — SHOP / ORDER-FLOW STYLES
   Catalog cards, detail page, checkout & success — matched to the premium
   purple/glass design system. Uses the existing CSS variables:
     --accent, --accent-alt, --bg-glass, --border-card, --radius-lg, etc.
   ========================================================================== */

/* ---------- Catalog grid + cards ---------------------------------------- */
.shop-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
@media (max-width: 1000px) { .shop-grid { grid-template-columns: repeat(2, 1fr); gap: 22px; } }
@media (max-width: 640px)  { .shop-grid { grid-template-columns: 1fr; } }

.shop-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--bg-glass, rgba(255,255,255,0.03));
  backdrop-filter: var(--glass-blur, blur(18px));
  -webkit-backdrop-filter: var(--glass-blur, blur(18px));
  border: 1px solid var(--border-card, rgba(255,255,255,0.08));
  border-radius: var(--radius-lg, 24px);
  overflow: hidden;
  box-shadow: 0 14px 40px rgba(0,0,0,0.28);
  transition: transform .4s cubic-bezier(.16,1,.3,1), border-color .4s, box-shadow .4s;
}
[data-theme="light"] .shop-card {
  background: rgba(255,255,255,0.82);
  border-color: rgba(108,99,255,0.12);
  box-shadow: 0 14px 40px rgba(78,39,128,0.10);
}
.shop-card:hover {
  transform: translateY(-8px);
  border-color: rgba(124,77,204,0.55);
  box-shadow: 0 26px 60px rgba(78,39,128,0.34);
}

.shop-card-media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.shop-card-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .7s cubic-bezier(.16,1,.3,1);
}
.shop-card:hover .shop-card-media img { transform: scale(1.08); }
.shop-card-media::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(7,3,18,0) 40%, rgba(7,3,18,0.72) 100%);
}
.shop-card-cat {
  position: absolute; top: 14px; left: 14px; z-index: 2;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  font-size: 10.5px; font-weight: 700; letter-spacing: 1.2px; text-transform: uppercase;
  color: #fff;
  background: rgba(78,39,128,0.7);
  border: 1px solid rgba(168,133,240,0.45);
  border-radius: 999px;
  backdrop-filter: blur(8px);
}
.shop-card-fav {
  position: absolute; top: 14px; right: 14px; z-index: 2;
  width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(124,77,204,0.5);
  color: #fff; font-size: 22px; font-weight: 900;
  backdrop-filter: blur(8px);
}
.shop-card-rating {
  position: absolute; bottom: 14px; left: 14px; z-index: 2;
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 700; color: #fff;
}
.shop-card-rating i { color: #fbbf24; font-size: 12px; }
.shop-card-rating span { color: rgba(255,255,255,0.7); font-weight: 500; }

.shop-card-body {
  display: flex; flex-direction: column; flex: 1;
  padding: 22px 22px 24px;
}
.shop-card-title {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 19px; font-weight: 800; line-height: 1.3;
  color: var(--text-primary);
  margin: 0 0 8px;
}
.shop-card-meta {
  display: flex; flex-wrap: wrap; gap: 6px 14px;
  font-size: 12px; color: var(--text-secondary);
  margin-bottom: 12px;
}
.shop-card-meta span { display: inline-flex; align-items: center; gap: 6px; }
.shop-card-meta i { color: var(--accent-alt, #7c4dcc); font-size: 12px; }
.shop-card-desc {
  font-size: 13.5px; color: var(--text-secondary); line-height: 1.65;
  margin: 0 0 20px; flex: 1;
}
.shop-card-foot {
  display: flex; align-items: center; justify-content: space-between;
  gap: 14px;
  padding-top: 16px;
  border-top: 1px solid var(--border-card, rgba(255,255,255,0.08));
}
.shop-price { display: flex; align-items: baseline; gap: 8px; }
.shop-price-now {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: 26px; font-weight: 900;
  background: linear-gradient(135deg,#a885f0,#7c4dcc);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.shop-price-old {
  font-size: 15px; color: var(--text-secondary);
  text-decoration: line-through; opacity: .65;
}
.shop-card-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px;
  font-size: 13.5px; font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg,#6c4bd0,#4e2780);
  border: 1px solid rgba(168,133,240,0.4);
  border-radius: 999px;
  transition: gap .3s, box-shadow .3s, transform .3s;
  white-space: nowrap;
}
.shop-card-btn:hover { gap: 12px; box-shadow: 0 10px 28px rgba(78,39,128,0.5); transform: translateY(-2px); }
.shop-card-btn i { font-size: 11px; }

/* ---------- Filter chips ------------------------------------------------ */
.shop-filters {
  display: flex; flex-wrap: wrap; gap: 10px;
  justify-content: center;
  margin-bottom: 44px;
}
.shop-chip {
  padding: 9px 20px;
  font-size: 13px; font-weight: 600;
  color: var(--text-secondary);
  background: rgba(124,77,204,0.06);
  border: 1px solid var(--border-card, rgba(255,255,255,0.09));
  border-radius: 999px;
  cursor: pointer;
  transition: all .28s;
}
.shop-chip:hover { color: var(--text-primary); border-color: rgba(124,77,204,0.5); }
.shop-chip.active {
  color: #fff;
  background: linear-gradient(135deg,#6c4bd0,#4e2780);
  border-color: rgba(168,133,240,0.55);
  box-shadow: 0 8px 22px rgba(78,39,128,0.4);
}

/* ---------- Detail page ------------------------------------------------- */
.detail-wrap { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: start; }
@media (max-width: 940px) { .detail-wrap { grid-template-columns: 1fr; gap: 34px; } }

.detail-media {
  position: relative;
  border-radius: var(--radius-xl, 32px);
  overflow: hidden;
  border: 1px solid var(--border-card, rgba(255,255,255,0.08));
  box-shadow: 0 20px 60px rgba(0,0,0,0.32);
}
.detail-media img { width: 100%; height: 460px; object-fit: cover; display: block; }
@media (max-width: 940px) { .detail-media img { height: 320px; } }
.detail-media-badge {
  position: absolute; top: 18px; left: 18px;
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 16px; font-size: 11px; font-weight: 700;
  letter-spacing: 1.4px; text-transform: uppercase; color: #fff;
  background: rgba(78,39,128,0.78); border: 1px solid rgba(168,133,240,0.5);
  border-radius: 999px; backdrop-filter: blur(8px);
}

.detail-highlights { display: grid; gap: 14px; margin: 8px 0 0; }
.detail-hl-item {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 16px 18px;
  background: rgba(124,77,204,0.06);
  border: 1px solid var(--border-card, rgba(255,255,255,0.08));
  border-radius: 16px;
}
.detail-hl-item i {
  color: #6c63ff; font-size: 15px; margin-top: 2px; flex-shrink: 0;
}
.detail-hl-item span { font-size: 14.5px; color: var(--text-primary); line-height: 1.55; }

/* Sticky purchase card */
.buy-card {
  position: sticky; top: 100px;
  background: var(--bg-glass, rgba(255,255,255,0.04));
  backdrop-filter: var(--glass-blur, blur(20px));
  -webkit-backdrop-filter: var(--glass-blur, blur(20px));
  border: 1px solid var(--border-card, rgba(255,255,255,0.1));
  border-radius: var(--radius-xl, 32px);
  padding: 32px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
[data-theme="light"] .buy-card { background: rgba(255,255,255,0.9); border-color: rgba(108,99,255,0.14); }
.buy-card-price { display: flex; align-items: baseline; gap: 12px; margin-bottom: 6px; }
.buy-card-now {
  font-family: 'Cormorant Garamond', Georgia, serif; font-size: 44px; font-weight: 900;
  background: linear-gradient(135deg,#a885f0,#7c4dcc);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.buy-card-old { font-size: 20px; color: var(--text-secondary); text-decoration: line-through; opacity: .6; }
.buy-card-save {
  display: inline-block; margin-bottom: 22px; padding: 5px 12px;
  font-size: 12px; font-weight: 700; color: #6c63ff;
  background: rgba(108,99,255,0.12); border: 1px solid rgba(108,99,255,0.3);
  border-radius: 999px;
}
.buy-card-list { list-style: none; margin: 0 0 26px; padding: 22px 0 0; border-top: 1px solid var(--border-card, rgba(255,255,255,0.08)); }
.buy-card-list li { display: flex; align-items: center; gap: 10px; font-size: 13.5px; color: var(--text-secondary); margin-bottom: 13px; }
.buy-card-list li i { color: var(--accent-alt,#7c4dcc); font-size: 13px; width: 16px; text-align: center; flex-shrink: 0; }

/* ---------- Tutor profile block (detail) -------------------------------- */
.tutor-profile {
  display: flex; align-items: center; gap: 18px;
  padding: 20px; margin-top: 12px;
  background: rgba(124,77,204,0.06);
  border: 1px solid var(--border-card, rgba(255,255,255,0.08));
  border-radius: 18px;
}
.tutor-profile img { width: 72px; height: 72px; border-radius: 50%; object-fit: cover; border: 2px solid rgba(168,133,240,0.5); flex-shrink: 0; }
.tutor-profile-name { font-size: 17px; font-weight: 800; color: var(--text-primary); margin-bottom: 3px; }
.tutor-profile-role { font-size: 12.5px; color: var(--accent-alt,#7c4dcc); font-weight: 600; }
.tutor-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.tutor-tag {
  padding: 6px 13px; font-size: 12px; font-weight: 600; color: var(--text-secondary);
  background: rgba(124,77,204,0.08); border: 1px solid var(--border-card,rgba(255,255,255,0.09)); border-radius: 999px;
}

/* Curriculum / includes rows */
.detail-rows { display: grid; gap: 10px; margin-top: 4px; }
.detail-row {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 16px 20px;
  background: rgba(124,77,204,0.05);
  border: 1px solid var(--border-card, rgba(255,255,255,0.08));
  border-radius: 14px;
}
.detail-row-title { display: flex; align-items: center; gap: 12px; font-size: 14.5px; font-weight: 600; color: var(--text-primary); }
.detail-row-title .n { width: 28px; height: 28px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 800; color: #fff; background: linear-gradient(135deg,#6c4bd0,#4e2780); flex-shrink: 0; }
.detail-row-meta { font-size: 12.5px; color: var(--text-secondary); white-space: nowrap; }

/* ---------- Checkout ---------------------------------------------------- */
.checkout-wrap { display: grid; grid-template-columns: 1fr 0.9fr; gap: 40px; align-items: start; }
@media (max-width: 940px) { .checkout-wrap { grid-template-columns: 1fr; gap: 30px; } }

.checkout-panel {
  background: var(--bg-glass, rgba(255,255,255,0.04));
  backdrop-filter: var(--glass-blur, blur(20px));
  -webkit-backdrop-filter: var(--glass-blur, blur(20px));
  border: 1px solid var(--border-card, rgba(255,255,255,0.1));
  border-radius: var(--radius-xl, 32px);
  padding: 34px;
}
[data-theme="light"] .checkout-panel { background: rgba(255,255,255,0.9); border-color: rgba(108,99,255,0.14); }

.checkout-panel-title { font-size: 20px; font-weight: 800; color: var(--text-primary); margin: 0 0 4px; }
.checkout-panel-sub { font-size: 13.5px; color: var(--text-secondary); margin: 0 0 26px; }

.field { margin-bottom: 20px; }
.field label { display: block; font-size: 13px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.field label .req { color: #f472b6; }
.field input {
  width: 100%;
  padding: 14px 16px;
  font-size: 15px; font-family: inherit;
  color: var(--text-primary);
  background: rgba(124,77,204,0.05);
  border: 1px solid var(--border-card, rgba(255,255,255,0.12));
  border-radius: 14px;
  transition: border-color .25s, box-shadow .25s;
}
.field input::placeholder { color: var(--text-muted, rgba(255,255,255,0.35)); }
.field input:focus { outline: none; border-color: rgba(124,77,204,0.7); box-shadow: 0 0 0 4px rgba(124,77,204,0.15); }
.field input.invalid { border-color: #7c4dcc; box-shadow: 0 0 0 4px rgba(124,77,204,0.14); }
.field-error { display: none; margin-top: 6px; font-size: 12px; color: #fb7185; }
.field input.invalid + .field-error { display: block; }

.checkout-divider { display: flex; align-items: center; gap: 14px; margin: 28px 0 22px; color: var(--text-secondary); font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; }
.checkout-divider::before, .checkout-divider::after { content: ''; flex: 1; height: 1px; background: var(--border-card, rgba(255,255,255,0.1)); }

.paypal-note {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 12.5px; color: var(--text-secondary); line-height: 1.6;
  padding: 14px 16px; margin-top: 18px;
  background: rgba(124,77,204,0.06);
  border: 1px solid var(--border-card, rgba(255,255,255,0.09));
  border-radius: 14px;
}
.paypal-note i { color: var(--accent-alt,#7c4dcc); margin-top: 2px; }

#paypal-button-container { margin-top: 6px; min-height: 52px; }

/* PayPal not-configured fallback */
.paypal-setup {
  padding: 22px;
  background: rgba(251,191,36,0.08);
  border: 1px dashed rgba(251,191,36,0.5);
  border-radius: 16px;
  color: var(--text-primary);
}
.paypal-setup h4 { font-size: 15px; font-weight: 800; margin: 0 0 8px; color: #fbbf24; }
.paypal-setup p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin: 0 0 12px; }
.paypal-setup code { font-family: 'DM Mono',monospace; font-size: 12px; background: rgba(0,0,0,0.35); padding: 2px 7px; border-radius: 6px; color: #a885f0; }
.paypal-setup .btn-demo {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 6px;
  padding: 12px 22px; font-size: 14px; font-weight: 700; color: #fff;
  background: linear-gradient(135deg,#6c4bd0,#4e2780); border: none;
  border-radius: 999px; cursor: pointer; transition: transform .25s, box-shadow .25s;
}
.paypal-setup .btn-demo:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(78,39,128,0.5); }

/* Order summary card */
.summary-card {
  position: sticky; top: 100px;
  background: var(--bg-glass, rgba(255,255,255,0.04));
  backdrop-filter: var(--glass-blur, blur(20px));
  -webkit-backdrop-filter: var(--glass-blur, blur(20px));
  border: 1px solid var(--border-card, rgba(255,255,255,0.1));
  border-radius: var(--radius-xl, 32px);
  overflow: hidden;
}
[data-theme="light"] .summary-card { background: rgba(255,255,255,0.9); border-color: rgba(108,99,255,0.14); }
.summary-media { position: relative; height: 160px; overflow: hidden; }
.summary-media img { width: 100%; height: 100%; object-fit: cover; }
.summary-media::after { content:''; position:absolute; inset:0; background: linear-gradient(180deg,rgba(7,3,18,0) 30%,rgba(7,3,18,0.7) 100%); }
.summary-body { padding: 26px; }
.summary-label { font-size: 11px; font-weight: 700; letter-spacing: 1.6px; text-transform: uppercase; color: var(--accent-alt,#7c4dcc); margin-bottom: 10px; }
.summary-title { font-size: 18px; font-weight: 800; color: var(--text-primary); line-height: 1.35; margin-bottom: 16px; }
.summary-line { display: flex; align-items: center; justify-content: space-between; font-size: 14px; color: var(--text-secondary); padding: 9px 0; }
.summary-line.total { border-top: 1px solid var(--border-card,rgba(255,255,255,0.1)); margin-top: 8px; padding-top: 18px; font-size: 16px; }
.summary-line.total .v { font-family:'Plus Jakarta Sans',sans-serif; font-size: 28px; font-weight: 900; background: linear-gradient(135deg,#a885f0,#7c4dcc); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; }
.summary-trust { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--border-card,rgba(255,255,255,0.08)); }
.summary-trust span { display: inline-flex; align-items: center; gap: 7px; font-size: 12px; color: var(--text-secondary); }
.summary-trust i { color: #6c63ff; }

/* ---------- Success page ------------------------------------------------ */
.success-card {
  max-width: 720px; margin: 0 auto; text-align: center;
  background: var(--bg-glass, rgba(255,255,255,0.04));
  backdrop-filter: var(--glass-blur, blur(20px));
  border: 1px solid var(--border-card, rgba(255,255,255,0.1));
  border-radius: var(--radius-xl, 32px);
  padding: 56px 44px;
  box-shadow: 0 24px 70px rgba(0,0,0,0.34);
}
[data-theme="light"] .success-card { background: rgba(255,255,255,0.92); border-color: rgba(108,99,255,0.14); }
.success-check {
  width: 96px; height: 96px; margin: 0 auto 28px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 44px; color: #fff;
  background: linear-gradient(135deg,#4e2780,#7c4dcc);
  box-shadow: 0 0 0 10px rgba(108,99,255,0.14), 0 16px 40px rgba(22,163,74,0.4);
  animation: successPop .6s cubic-bezier(.16,1.3,.4,1) both;
}
@keyframes successPop { 0% { transform: scale(0); } 60% { transform: scale(1.12); } 100% { transform: scale(1); } }
.success-steps { text-align: left; display: grid; gap: 16px; margin: 34px 0; }
.success-step {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 20px 22px;
  background: rgba(124,77,204,0.06);
  border: 1px solid var(--border-card,rgba(255,255,255,0.08));
  border-radius: 18px;
}
.success-step-num { width: 36px; height: 36px; border-radius: 10px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; font-size: 15px; font-weight: 800; color: #fff; background: linear-gradient(135deg,#6c4bd0,#4e2780); }
.success-step-title { font-size: 15px; font-weight: 700; color: var(--text-primary); margin-bottom: 4px; }
.success-step-desc { font-size: 13.5px; color: var(--text-secondary); line-height: 1.6; }
.success-receipt {
  display: inline-flex; flex-direction: column; gap: 4px; align-items: center;
  margin: 6px auto 30px; padding: 16px 30px;
  background: rgba(124,77,204,0.07); border: 1px dashed rgba(124,77,204,0.4); border-radius: 16px;
}
.success-receipt .lbl { font-size: 11px; letter-spacing: 1.4px; text-transform: uppercase; color: var(--text-secondary); }
.success-receipt .val { font-family: 'DM Mono',monospace; font-size: 16px; font-weight: 600; color: var(--accent-alt,#a885f0); }

/* Empty state */
.shop-empty { text-align: center; padding: 60px 20px; color: var(--text-secondary); }
.shop-empty i { font-size: 40px; color: var(--accent-alt,#7c4dcc); margin-bottom: 16px; opacity: .6; }