/* ==============================================================
   CampusShelf — Checkout: buy modal, order-placed animation,
   order tracker timeline, seller phase controls.
   ============================================================== */

/* ---------- Generic modal shell (reused for buy + cancel confirm) ---------- */
.cs-modal-backdrop {
  position: fixed; inset: 0; z-index: 999;
  background: rgba(17, 24, 39, 0.5);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  display: flex; align-items: flex-end; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity .22s ease;
}
.cs-modal-backdrop.open { opacity: 1; pointer-events: auto; }
@media (min-width: 640px) {
  .cs-modal-backdrop { align-items: center; padding: 20px; }
}

.cs-modal {
  background: #fff;
  width: 100%; max-width: 460px;
  border-radius: 22px 22px 0 0;
  padding: 22px 20px calc(20px + env(safe-area-inset-bottom, 0px));
  max-height: 88vh; overflow-y: auto;
  transform: translateY(24px);
  transition: transform .28s cubic-bezier(.2,.9,.3,1.2);
  box-shadow: 0 -8px 40px rgba(17,24,39,.18);
}
.cs-modal-backdrop.open .cs-modal { transform: translateY(0); }
@media (min-width: 640px) {
  .cs-modal { border-radius: 22px; transform: scale(.94) translateY(10px); }
  .cs-modal-backdrop.open .cs-modal { transform: scale(1) translateY(0); }
}

.cs-modal-handle {
  width: 38px; height: 4px; border-radius: 99px; background: var(--line);
  margin: 0 auto 14px;
}
@media (min-width: 640px) { .cs-modal-handle { display: none; } }

.cs-modal-title {
  font-family: var(--font-display); font-weight: 800; font-size: 17px;
  color: var(--ink); margin-bottom: 4px;
}
.cs-modal-sub { font-size: 12.5px; color: var(--ink-soft); margin-bottom: 16px; }

.cs-modal-close {
  position: absolute; top: 16px; right: 16px;
  width: 30px; height: 30px; border-radius: 50%;
  border: 1px solid var(--line); background: #fff;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--ink-soft); font-size: 15px; line-height: 1;
}

/* ---------- Buy modal: order summary + payment method ---------- */
.cs-buy-summary {
  display: flex; align-items: center; gap: 12px;
  background: #F8F9FB; border: 1px solid var(--line);
  border-radius: 14px; padding: 12px 14px; margin-bottom: 18px;
}
.cs-buy-cover {
  width: 46px; height: 46px; border-radius: 10px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; overflow: hidden;
}
.cs-buy-cover img { width: 100%; height: 100%; object-fit: cover; }
.cs-buy-info { flex: 1; min-width: 0; }
.cs-buy-title {
  font-weight: 700; font-size: 13.5px; color: var(--ink);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.cs-buy-seller { font-size: 11.5px; color: var(--ink-soft); margin-top: 2px; }
.cs-buy-price {
  font-family: var(--font-display); font-weight: 800; color: var(--green);
  font-size: 16px; flex-shrink: 0;
}

.cs-pay-label {
  font-size: 12.5px; font-weight: 700; color: var(--ink);
  margin-bottom: 10px; text-transform: uppercase; letter-spacing: .02em;
}

.cs-addr-form { display: flex; flex-direction: column; gap: 9px; margin-bottom: 20px; }
.cs-addr-input {
  width: 100%; padding: 12px 14px; border-radius: 12px;
  border: 1.5px solid var(--line); font-family: inherit; font-size: 13.5px;
  background: #fff; color: var(--ink);
}
.cs-addr-input:focus { outline: none; border-color: var(--blue); }
.cs-addr-input::placeholder { color: #9CA3AF; }
.cs-addr-row { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.cs-loc-btn {
  display: flex; align-items: center; gap: 8px;
  border: 1.5px dashed var(--line); border-radius: 12px;
  padding: 11px 14px; background: #F9FAFB; color: var(--ink-soft);
  font-size: 12.5px; font-weight: 600; text-align: left; cursor: pointer;
  transition: border-color .15s ease, background .15s ease, color .15s ease;
}
.cs-loc-btn svg { flex-shrink: 0; }
.cs-loc-btn:hover { border-color: var(--blue); color: var(--blue); }
.cs-loc-btn.loading { opacity: .7; cursor: wait; }
.cs-loc-btn.captured {
  border-style: solid; border-color: var(--green); background: rgba(16,185,129,.06); color: var(--green);
}
.cs-pay-options { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
.cs-pay-opt {
  display: flex; align-items: center; gap: 12px;
  border: 1.5px solid var(--line); border-radius: 14px;
  padding: 13px 14px; cursor: pointer; position: relative;
  transition: border-color .15s ease, background .15s ease;
}
.cs-pay-opt.selected { border-color: var(--green); background: rgba(16,185,129,.05); }
.cs-pay-opt.disabled { cursor: not-allowed; opacity: .55; }
.cs-pay-radio {
  width: 19px; height: 19px; border-radius: 50%; border: 2px solid var(--line);
  flex-shrink: 0; position: relative;
}
.cs-pay-opt.selected .cs-pay-radio { border-color: var(--green); }
.cs-pay-opt.selected .cs-pay-radio::after {
  content: ''; position: absolute; inset: 3px; border-radius: 50%; background: var(--green);
}
.cs-pay-icon { font-size: 20px; flex-shrink: 0; width: 24px; text-align: center; }
.cs-pay-text { flex: 1; min-width: 0; }
.cs-pay-name { font-weight: 700; font-size: 13.5px; color: var(--ink); }
.cs-pay-desc { font-size: 11.5px; color: var(--ink-soft); margin-top: 1px; }
.cs-pay-badge {
  font-size: 10px; font-weight: 800; color: #92400E; background: rgba(245,158,11,.14);
  padding: 3px 8px; border-radius: 99px; flex-shrink: 0; white-space: nowrap;
}

.cs-buy-note {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: 11.5px; color: var(--ink-soft); margin-bottom: 16px; line-height: 1.5;
}
.cs-buy-note svg { flex-shrink: 0; margin-top: 1px; }

.cs-modal-actions { display: flex; gap: 10px; }
.cs-modal-actions .btn { flex: 1; min-height: 48px; }

/* ---------- Order-placed success animation (full screen) ---------- */
.cs-success-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(255,255,255,.97);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 6px; opacity: 0; pointer-events: none; transition: opacity .25s ease;
}
.cs-success-overlay.open { opacity: 1; pointer-events: auto; }

.cs-success-ring {
  width: 96px; height: 96px; border-radius: 50%;
  background: rgba(16,185,129,.08);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px; position: relative;
}
.cs-success-ring::before {
  content: ''; position: absolute; inset: -10px; border-radius: 50%;
  border: 2px solid rgba(16,185,129,.25);
  transform: scale(0); opacity: 0;
}
.cs-success-overlay.open .cs-success-ring::before {
  animation: csRingPulse 1.1s ease-out .15s forwards;
}
@keyframes csRingPulse {
  0%   { transform: scale(.6); opacity: .8; }
  100% { transform: scale(1.35); opacity: 0; }
}

.cs-success-check {
  width: 64px; height: 64px;
}
.cs-success-check circle {
  stroke: var(--green); stroke-width: 3; fill: none;
  stroke-dasharray: 190; stroke-dashoffset: 190;
}
.cs-success-check path {
  stroke: var(--green); stroke-width: 4; fill: none;
  stroke-linecap: round; stroke-linejoin: round;
  stroke-dasharray: 40; stroke-dashoffset: 40;
}
.cs-success-overlay.open .cs-success-check circle {
  animation: csDraw .5s ease forwards;
}
.cs-success-overlay.open .cs-success-check path {
  animation: csDraw .35s ease .45s forwards;
}
@keyframes csDraw { to { stroke-dashoffset: 0; } }

.cs-success-title {
  font-family: var(--font-display); font-weight: 800; font-size: 20px;
  color: var(--ink); opacity: 0; transform: translateY(6px);
}
.cs-success-sub {
  font-size: 13px; color: var(--ink-soft); opacity: 0; transform: translateY(6px);
}
.cs-success-overlay.open .cs-success-title { animation: csFadeUp .4s ease .5s forwards; }
.cs-success-overlay.open .cs-success-sub   { animation: csFadeUp .4s ease .62s forwards; }
@keyframes csFadeUp { to { opacity: 1; transform: translateY(0); } }

.cs-confetti { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.cs-confetti-dot {
  position: absolute; top: -10px; border-radius: 3px; opacity: 0;
  animation: csFall 1.3s ease-in forwards;
}
@keyframes csFall {
  0%   { opacity: 1; transform: translateY(0) rotate(0deg); }
  100% { opacity: 0; transform: translateY(100vh) rotate(240deg); }
}

/* ---------- Order list filter tabs ---------- */
.ord-filter-tabs {
  display: flex; gap: 8px; margin-bottom: 16px; overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.ord-filter-tab {
  flex-shrink: 0; border: 1px solid var(--line); background: #fff;
  color: var(--ink-soft); font-weight: 700; font-size: 12.5px;
  padding: 8px 15px; border-radius: 99px; cursor: pointer;
  transition: all .15s ease;
}
.ord-filter-tab.active { background: var(--ink); color: #fff; border-color: var(--ink); }

/* ---------- Order tracker timeline (orders.html) ---------- */
.ord-order-number { font-size: 11.5px; color: var(--ink-soft); font-weight: 600; margin-bottom: 2px; }
.ord-pay-tag {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 10.5px; font-weight: 700; color: var(--ink-soft);
  background: #F3F4F7; padding: 3px 9px; border-radius: 99px; margin-top: 6px;
}

.ord-tracker {
  margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--line);
}
.ord-tracker-cancelled {
  display: flex; align-items: center; gap: 10px;
  background: #FEF2F2; border: 1px solid #FECACA; border-radius: 12px;
  padding: 11px 13px; font-size: 12.5px; color: #991B1B; font-weight: 600;
  margin-top: 16px;
}

.ord-steps { display: flex; }
.ord-step {
  flex: 1; display: flex; flex-direction: column; align-items: center; text-align: center;
  position: relative;
}
.ord-step-line {
  position: absolute; top: 13px; left: -50%; width: 100%; height: 2px;
  background: var(--line); z-index: 0;
}
.ord-step:first-child .ord-step-line { display: none; }
.ord-step.done .ord-step-line { background: var(--green); }

.ord-step-dot {
  width: 26px; height: 26px; border-radius: 50%; background: #fff;
  border: 2px solid var(--line); z-index: 1;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; color: var(--ink-soft); flex-shrink: 0;
}
.ord-step.done .ord-step-dot { border-color: var(--green); background: var(--green); color: #fff; }
.ord-step.current .ord-step-dot {
  border-color: var(--green); color: var(--green);
  box-shadow: 0 0 0 4px rgba(16,185,129,.14);
}
.ord-step-label {
  font-size: 10.5px; font-weight: 700; color: var(--ink-soft); margin-top: 7px; line-height: 1.3;
}
.ord-step.done .ord-step-label, .ord-step.current .ord-step-label { color: var(--ink); }
.ord-step-time { font-size: 9.5px; color: var(--ink-soft); margin-top: 2px; }

.ord-seller-actions {
  display: flex; gap: 10px; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line);
}
.ord-seller-note {
  font-size: 12px; color: var(--ink-soft); margin-top: 14px; padding-top: 14px;
  border-top: 1px solid var(--line); font-style: italic;
}
.ord-address {
  margin-top: 14px; padding: 11px 13px; background: #F9FAFB;
  border: 1px solid var(--line); border-radius: 12px;
}
.ord-address-label { font-size: 11px; font-weight: 700; color: var(--ink); margin-bottom: 3px; }
.ord-address-text { font-size: 12px; color: var(--ink-soft); line-height: 1.5; }
.ord-seller-tag {
  font-size: 10.5px; font-weight: 800; color: var(--blue); background: rgba(37,99,235,.08);
  padding: 3px 9px; border-radius: 99px; margin-left: 8px;
}