/* Product Operations Dashboard - polished & modern */

:root {
  --bg: #f1f5f9;
  --bg-gradient: linear-gradient(160deg, #f8fafc 0%, #f1f5f9 50%, #e2e8f0 100%);
  --surface: #ffffff;
  --surface-elevated: #ffffff;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --text: #0f172a;
  --text-muted: #64748b;
  --accent: #0f172a;
  --accent-hover: #334155;
  --link: #2563eb;
  --link-hover: #1d4ed8;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow: 0 2px 8px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 8px 24px rgba(15, 23, 42, 0.08), 0 2px 6px rgba(15, 23, 42, 0.04);
  --shadow-header: 0 1px 0 0 rgba(15, 23, 42, 0.06);
  --radius: 0;
  --radius-lg: 0;
  --banner-bg: linear-gradient(135deg, #fefce8 0%, #fef9c3 100%);
  --banner-border: #fde047;
  --transition: 0.22s ease;
  --transition-smooth: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

body.nav-open .app {
  margin-left: 260px;
}

body.nav-open .nav-overlay {
  opacity: 1;
  pointer-events: auto;
}

/* Hamburger toggle */
.nav-toggle {
  position: fixed;
  top: 24px;
  left: 24px;
  z-index: 102;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: background var(--transition), border-color var(--transition), left var(--transition-smooth);
}

.nav-toggle:hover {
  background: var(--border-light);
  border-color: #cbd5e1;
}

body.nav-open .nav-toggle {
  visibility: hidden;
  pointer-events: none;
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  transition: transform var(--transition-smooth), opacity var(--transition);
}

body.nav-open .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

body.nav-open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

body.nav-open .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Left nav sidebar */
.nav-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 260px;
  height: 100vh;
  background: linear-gradient(180deg, var(--surface) 0%, #fafbfc 100%);
  border-right: 1px solid var(--border);
  box-shadow: 4px 0 24px rgba(15, 23, 42, 0.06);
  z-index: 99;
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-sidebar.is-open {
  transform: translateX(0);
}

.nav-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 20px 16px;
  border-bottom: 1px solid var(--border-light);
  flex-shrink: 0;
}

.nav-close {
  width: 36px;
  height: 36px;
  padding: 0;
  border: none;
  background: var(--bg);
  color: var(--text-muted);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), color var(--transition);
}

.nav-close:hover {
  color: var(--text);
  background: var(--border);
}

.nav-sidebar-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.nav-sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 16px 12px;
}

.nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links li {
  margin-bottom: 2px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}

.nav-link:hover {
  background: var(--border-light);
  color: var(--accent);
}

.nav-link-icon {
  flex-shrink: 0;
  color: var(--text-muted);
}

.nav-link:hover .nav-link-icon {
  color: var(--link);
}

.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.2);
  z-index: 98;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

@media (min-width: 768px) {
  .nav-overlay {
    display: none;
  }
}

@media (max-width: 767px) {
  body.nav-open .app {
    margin-left: 0;
  }

  .nav-sidebar.is-open {
    box-shadow: 8px 0 32px rgba(15, 23, 42, 0.15);
  }
}

.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px 56px 80px;
  transition: margin-left var(--transition-smooth), padding-left var(--transition-smooth);
}

body.nav-open .app {
  padding-left: 32px;
}

/* Header */
.header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border-light);
  box-shadow: var(--shadow-header);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.header-logo {
  display: block;
  height: 52px;
  width: auto;
  object-fit: contain;
  transition: opacity var(--transition), transform var(--transition);
}

.header-brand:hover .header-logo {
  opacity: 0.92;
}

.heading {
  margin: 0;
  font-size: 1.875rem;
  font-weight: 700;
  letter-spacing: -0.035em;
  color: var(--accent);
  text-shadow: 0 0 0 transparent;
}

@supports (background-clip: text) or (-webkit-background-clip: text) {
  .heading {
    background: linear-gradient(135deg, #0f172a 0%, #334155 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }
}

.header-archive-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0;
  cursor: pointer;
  font-family: inherit;
  box-shadow: var(--shadow-sm);
  transition: color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.header-archive-icon {
  flex-shrink: 0;
  opacity: 0.9;
}

.header-archive-btn:hover {
  color: var(--text);
  border-color: #cbd5e1;
  box-shadow: var(--shadow);
  transform: translateY(-1px);
}

.header-archive-btn:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}

.header-archive-count {
  min-width: 22px;
  padding: 3px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--link);
  background: rgba(37, 99, 235, 0.1);
  border-radius: 0;
}

/* Banner (announcements) */
.banner {
  margin-bottom: 28px;
  padding: 16px 20px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.banner--yellow {
  background: linear-gradient(135deg, #fefce8 0%, #fef9c3 100%);
  border: 1px solid #fde047;
}
.banner--yellow .banner-icon,
.banner--yellow .banner-message { color: #713f12; }
.banner--yellow .banner-link { color: #854d0e; }
.banner--yellow .banner-link:hover { color: #713f12; }

.banner--green {
  background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
  border: 1px solid #86efac;
}
.banner--green .banner-icon,
.banner--green .banner-message { color: #14532d; }
.banner--green .banner-link { color: #166534; }
.banner--green .banner-link:hover { color: #14532d; }

.banner--blue {
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
  border: 1px solid #93c5fd;
}
.banner--blue .banner-icon,
.banner--blue .banner-message { color: #1e3a8a; }
.banner--blue .banner-link { color: #1d4ed8; }
.banner--blue .banner-link:hover { color: #1e3a8a; }

.banner--red {
  background: linear-gradient(135deg, #fef2f2 0%, #fecaca 100%);
  border: 1px solid #fca5a5;
}
.banner--red .banner-icon,
.banner--red .banner-message { color: #991b1b; }
.banner--red .banner-link { color: #b91c1c; }
.banner--red .banner-link:hover { color: #991b1b; }

.banner--orange {
  background: linear-gradient(135deg, #fff7ed 0%, #ffedd5 100%);
  border: 1px solid #fdba74;
}
.banner--orange .banner-icon,
.banner--orange .banner-message { color: #9a3412; }
.banner--orange .banner-link { color: #c2410c; }
.banner--orange .banner-link:hover { color: #9a3412; }

.banner-inner {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.banner-icon {
  flex-shrink: 0;
}

.banner-message {
  flex: 1;
  min-width: 0;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.5;
}

.banner-link {
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 1px solid currentColor;
  transition: color var(--transition);
}

.banner-link:hover {
  border-bottom-color: currentColor;
}

/* Main content */
.main {
  margin-top: 4px;
}

.search-wrap {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.search-input {
  width: 100%;
  max-width: 360px;
  min-width: 280px;
  padding: 10px 14px;
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  transition: border-color var(--transition);
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-input:focus {
  outline: none;
  border-color: var(--link);
}

.search-no-results {
  margin: 0 0 20px;
  padding: 20px;
  font-size: 0.9375rem;
  color: var(--text-muted);
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--border);
}

/* Card tabs */
.card-tabs {
  margin-top: 0;
}

.tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.tab {
  padding: 10px 18px;
  font-size: 0.9375rem;
  font-weight: 500;
  font-family: inherit;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}

.tab:hover {
  color: var(--text);
}

.tab.is-active {
  color: var(--link);
  border-bottom-color: var(--link);
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

/* Two-column widget grid */
.widget-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (max-width: 640px) {
  .widget-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

/* Widget card - polished module */
.widget {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 24px;
  cursor: pointer;
  transition: box-shadow var(--transition-smooth), border-color var(--transition), transform var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.widget * {
  cursor: inherit;
}

.widget-new-badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #1e40af;
  background: #dbeafe;
  padding: 2px 6px;
  margin-right: 6px;
  vertical-align: middle;
}

.widget-featured {
  background: #eff6ff;
  border: 2px solid #1e40af;
  box-shadow: 0 2px 8px rgba(30, 64, 175, 0.12);
}

.widget-featured:hover {
  background: #dbeafe;
  border-color: #1d4ed8;
  box-shadow: 0 4px 12px rgba(30, 64, 175, 0.18);
}

.widget::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--link) 0%, #60a5fa 100%);
  opacity: 0;
  transition: opacity var(--transition-smooth);
  pointer-events: none;
}

.widget:hover {
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(37, 99, 235, 0.06);
  border-color: #cbd5e1;
  transform: translateY(-3px);
}

.widget:hover::before {
  opacity: 1;
}

.widget-title {
  margin: 0 0 8px;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: -0.01em;
}

.widget-desc {
  margin: 0 0 16px;
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.widget-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.widget-actions a {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--link);
  text-decoration: none;
  padding: 4px 0;
  padding-right: 1.2em;
  position: relative;
  transition: color var(--transition);
}

.widget-actions a::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 0.5em;
  height: 0.5em;
  margin-top: -0.35em;
  border-right: 1.5px solid currentColor;
  border-top: 1.5px solid currentColor;
  transform: rotate(45deg);
  opacity: 0.7;
  transition: opacity var(--transition), transform var(--transition);
  pointer-events: none;
}

.widget-actions a:hover {
  color: var(--link-hover);
}

.widget-actions a:hover::after {
  opacity: 1;
  transform: rotate(45deg) translate(1px, -1px);
}

.widget-actions a:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}

.widget-actions a + a {
  color: var(--text-muted);
}

.widget-actions a + a:hover {
  color: var(--accent-hover);
}

/* Loading / error */
.loading,
.error {
  padding: 24px;
  text-align: center;
  color: var(--text-muted);
}

.widget-grid > .loading {
  grid-column: 1 / -1;
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
}

.error {
  color: #b91c1c;
  background: #fef2f2;
  border-radius: var(--radius);
}

/* Sidebar overlay & rail */
.sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(2px);
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.sidebar-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.sidebar {
  position: fixed;
  top: 0;
  right: 0;
  width: 380px;
  max-width: 100%;
  height: 100vh;
  background: linear-gradient(180deg, var(--surface) 0%, #fafbfc 100%);
  border-left: 1px solid var(--border);
  box-shadow: -8px 0 32px rgba(15, 23, 42, 0.12);
  z-index: 101;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar.is-open {
  transform: translateX(0);
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 24px 20px;
  border-bottom: 1px solid var(--border-light);
  flex-shrink: 0;
  background: var(--surface);
}

.sidebar-title {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: -0.01em;
}

.sidebar-close {
  width: 36px;
  height: 36px;
  padding: 0;
  border: none;
  border-radius: 0;
  background: var(--bg);
  color: var(--text-muted);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), color var(--transition);
}

.sidebar-close:hover {
  color: var(--text);
  background: var(--border);
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}

.archive-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.archive-item {
  padding: 16px 18px;
  margin-bottom: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), border-color var(--transition);
}

.archive-item:last-child {
  margin-bottom: 0;
}

.archive-item:hover {
  border-color: #e2e8f0;
  box-shadow: var(--shadow);
}

.archive-item-message {
  font-size: 0.9375rem;
  color: var(--text);
  margin: 0 0 10px;
  line-height: 1.5;
}

.archive-item-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.archive-item-date {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.archive-item-link {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--link);
  text-decoration: none;
  transition: color var(--transition);
}

.archive-item-link:hover {
  color: var(--link-hover);
  text-decoration: underline;
}

.archive-empty {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
  padding: 24px 0;
}