/* ==========================================================================
   THE SECONDHAND MARKET — SELL FLOW
   Multi-step listing creation. Low friction, high clarity.
   Depends on: tokens.css, base.css
   ========================================================================== */

.sell-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg-canvas);
}

/* --------------------------------------------------------------------------
   HEADER
   -------------------------------------------------------------------------- */

.sell-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: var(--bg-canvas);
  border-bottom: 1px solid var(--border-hairline);
}

.sell-header__inner {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gutter-mobile);
  gap: var(--space-3);
}

@media (min-width: 768px) {
  .sell-header__inner { padding: 0 var(--gutter); }
}

.sell-header__left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.sell-header__back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
}

.sell-header__back:hover { color: var(--text-primary); }

.sell-header__title {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  display: none;
}

@media (min-width: 640px) {
  .sell-header__title { display: block; }
}

/* --------------------------------------------------------------------------
   PROGRESS BAR
   -------------------------------------------------------------------------- */

.sell-progress {
  padding: var(--space-4) var(--gutter-mobile);
  border-bottom: 1px solid var(--border-hairline);
  background: var(--bg-surface);
}

@media (min-width: 768px) {
  .sell-progress { padding: var(--space-4) var(--gutter); }
}

.sell-progress__bar {
  display: flex;
  align-items: center;
  gap: 0;
  max-width: 600px;
  margin: 0 auto;
}

.sell-progress__step {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  color: var(--text-muted);
  white-space: nowrap;
  transition: color var(--dur-quick) var(--ease-standard);
}

.sell-progress__step.is-active { color: var(--text-primary); }
.sell-progress__step.is-done { color: var(--green-600); }

.sell-progress__num {
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1.5px solid var(--border-default);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  flex-shrink: 0;
  transition: all var(--dur-quick) var(--ease-standard);
}

.sell-progress__step.is-active .sell-progress__num {
  background: var(--ink-900);
  color: var(--ink-50);
  border-color: var(--ink-900);
}

[data-theme="dark"] .sell-progress__step.is-active .sell-progress__num {
  background: var(--ink-50);
  color: var(--ink-900);
  border-color: var(--ink-50);
}

.sell-progress__step.is-done .sell-progress__num {
  background: var(--green-600);
  color: #fff;
  border-color: var(--green-600);
}

.sell-progress__line {
  flex: 1;
  height: 1px;
  background: var(--border-default);
  margin: 0 var(--space-2);
  min-width: 16px;
}

.sell-progress__line.is-done { background: var(--green-600); }

.sell-progress__label { display: none; }
@media (min-width: 640px) { .sell-progress__label { display: inline; } }

/* --------------------------------------------------------------------------
   MAIN CONTENT
   -------------------------------------------------------------------------- */

.sell-body {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: var(--space-6) var(--gutter-mobile) var(--space-10);
}

@media (min-width: 768px) {
  .sell-body { padding: var(--space-8) var(--gutter) var(--space-12); }
}

.sell-form {
  width: 100%;
  max-width: 640px;
}

/* --------------------------------------------------------------------------
   STEPS
   -------------------------------------------------------------------------- */

.sell-step {
  display: none;
  flex-direction: column;
  gap: var(--space-6);
  animation: step-in var(--dur-base) var(--ease-emphasis);
}

.sell-step.is-active { display: flex; }

@keyframes step-in {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.sell-step__intro {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.sell-step__eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--amber-600);
}

.sell-step__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.sell-step__subtitle {
  font-size: var(--fs-base);
  color: var(--text-secondary);
  line-height: var(--lh-relaxed);
  max-width: 48ch;
}

/* --------------------------------------------------------------------------
   STEP 1: CATEGORY PICKER
   -------------------------------------------------------------------------- */

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

@media (min-width: 480px) {
  .category-grid { grid-template-columns: repeat(3, 1fr); }
}

.category-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-3);
  background: var(--bg-surface);
  border: 1.5px solid var(--border-hairline);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--dur-quick) var(--ease-standard);
  text-align: center;
}

.category-option:hover {
  border-color: var(--border-default);
  background: var(--bg-surface-alt);
}

.category-option.is-selected {
  border-color: var(--ink-900);
  background: var(--bg-surface);
  box-shadow: 0 0 0 1px var(--ink-900);
}

[data-theme="dark"] .category-option.is-selected {
  border-color: var(--ink-50);
  box-shadow: 0 0 0 1px var(--ink-50);
}

.category-option__icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-sunken);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 18px;
}

.category-option.is-selected .category-option__icon {
  background: var(--amber-100);
  color: var(--amber-700);
}

.category-option__name {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  line-height: 1.3;
}

/* --------------------------------------------------------------------------
   STEP 2: PHOTO UPLOAD
   -------------------------------------------------------------------------- */

.photo-upload-zone {
  border: 2px dashed var(--border-default);
  border-radius: var(--radius-md);
  padding: var(--space-8) var(--space-4);
  text-align: center;
  cursor: pointer;
  transition: all var(--dur-quick) var(--ease-standard);
  background: var(--bg-surface);
}

.photo-upload-zone:hover {
  border-color: var(--amber-600);
  background: var(--amber-50);
}

[data-theme="dark"] .photo-upload-zone:hover {
  background: var(--amber-900);
}

.photo-upload-zone__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-3);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-sunken);
  border-radius: 50%;
  color: var(--text-muted);
}

.photo-upload-zone__title {
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  margin-bottom: 4px;
}

.photo-upload-zone__hint {
  font-size: var(--fs-sm);
  color: var(--text-tertiary);
}

.photo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-4);
}

@media (min-width: 480px) {
  .photo-grid { grid-template-columns: repeat(4, 1fr); }
}

.photo-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 2px solid var(--border-hairline);
  background: var(--bg-sunken);
}

.photo-item.is-primary {
  border-color: var(--amber-600);
}

.photo-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.photo-item__badge {
  position: absolute;
  top: 4px;
  left: 4px;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--amber-600);
  color: #fff;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
}

.photo-item__actions {
  position: absolute;
  bottom: 4px;
  right: 4px;
  display: flex;
  gap: 3px;
}

.photo-item__btn {
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.6);
  color: #fff;
  border-radius: var(--radius-xs);
  font-size: 12px;
  backdrop-filter: blur(4px);
}

.photo-item__btn:hover { background: rgba(0,0,0,0.8); }

/* --------------------------------------------------------------------------
   STEP 3: DETAILS FORM
   -------------------------------------------------------------------------- */

.sell-fields {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.sell-fields__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

@media (min-width: 480px) {
  .sell-fields__row { grid-template-columns: 1fr 1fr; }
}

.condition-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.condition-chip {
  height: 36px;
  padding: 0 var(--space-4);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
  background: var(--bg-surface);
  border: 1.5px solid var(--border-default);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--dur-quick) var(--ease-standard);
}

.condition-chip:hover { border-color: var(--ink-600); }

.condition-chip.is-selected {
  background: var(--ink-900);
  color: var(--ink-50);
  border-color: var(--ink-900);
}

[data-theme="dark"] .condition-chip.is-selected {
  background: var(--ink-50);
  color: var(--ink-900);
  border-color: var(--ink-50);
}

/* --------------------------------------------------------------------------
   STEP 4: SELL METHOD
   -------------------------------------------------------------------------- */

.sell-methods {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 480px) {
  .sell-methods { grid-template-columns: 1fr 1fr; }
}

.sell-method {
  padding: var(--space-5);
  background: var(--bg-surface);
  border: 2px solid var(--border-hairline);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--dur-quick) var(--ease-standard);
}

.sell-method:hover { border-color: var(--border-default); }

.sell-method.is-selected {
  border-color: var(--ink-900);
  box-shadow: 0 0 0 1px var(--ink-900);
}

[data-theme="dark"] .sell-method.is-selected {
  border-color: var(--ink-50);
  box-shadow: 0 0 0 1px var(--ink-50);
}

.sell-method__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: var(--space-2);
}

.sell-method.is-selected .sell-method__label { color: var(--amber-600); }

.sell-method__title {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

.sell-method__body {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: var(--lh-relaxed);
}

/* --------------------------------------------------------------------------
   STEP 5: REVIEW
   -------------------------------------------------------------------------- */

.review-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.review-card__images {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-4);
  overflow-x: auto;
  background: var(--bg-sunken);
}

.review-card__thumb {
  width: 72px;
  height: 72px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-hairline);
}

.review-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.review-card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.review-card__title {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--text-primary);
}

.review-card__price {
  font-size: var(--fs-price-lg);
  font-weight: var(--fw-bold);
  font-feature-settings: "tnum";
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.review-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
}

.review-card__desc {
  font-size: var(--fs-base);
  color: var(--text-secondary);
  line-height: var(--lh-relaxed);
  white-space: pre-wrap;
}

.review-card__method {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-surface-alt);
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   NAVIGATION BUTTONS
   -------------------------------------------------------------------------- */

.sell-nav {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-hairline);
  margin-top: var(--space-4);
}

.sell-nav__spacer { flex: 1; }

/* --------------------------------------------------------------------------
   ALERT
   -------------------------------------------------------------------------- */

.sell-alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  display: none;
}

.sell-alert.is-visible { display: flex; gap: var(--space-2); align-items: flex-start; }
.sell-alert--error { background: var(--red-100); color: var(--red-600); border-left: 3px solid var(--red-600); }
.sell-alert--success { background: var(--green-100); color: var(--green-600); border-left: 3px solid var(--green-600); }