/* ==========================================================================
   MyBacklinkIndex — Design System
   Pure CSS, mobile-first. No frameworks.
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  /* Brand */
  --color-primary: #3b5bdb;        /* confident indigo-blue */
  --color-primary-dark: #2f49b0;
  --color-primary-light: #eef1fd;
  --color-secondary: #0ca678;      /* teal */
  --color-secondary-light: #e6f7f1;

  /* Status */
  --color-success: #10b981;        /* emerald - indexed */
  --color-success-bg: #e7f8f1;
  --color-warning: #d98b0c;        /* amber - pending */
  --color-warning-bg: #fdf3e2;
  --color-info: #3b5bdb;           /* blue - processing */
  --color-info-bg: #eef1fd;
  --color-error: #d64545;          /* muted red - failed */
  --color-error-bg: #fbeaea;
  --color-neutral: #64748b;        /* slate - paused */
  --color-neutral-bg: #eef1f5;

  /* Surfaces */
  --bg: #f4f6fb;                   /* very light blue-gray */
  --surface: #ffffff;
  --surface-alt: #f8fafc;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;

  /* Text */
  --text: #0f172a;                 /* dark navy */
  --text-muted: #64748b;           /* slate gray */
  --text-inverse: #f8fafc;
  --heading: #16233d;

  /* Typography */
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.25rem;
  --fs-2xl: 1.5rem;
  --fs-3xl: clamp(1.6rem, 4.5vw, 2.1rem);
  --fs-4xl: clamp(2rem, 6vw, 3rem);
  --fs-5xl: clamp(2.4rem, 7vw, 3.75rem);

  /* Spacing */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 3rem;
  --sp-8: 4rem;
  --sp-9: 6rem;

  /* Radii */
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 16px;
  --radius-full: 999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow: 0 4px 16px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);

  /* Layout */
  --container: 1200px;
  --container-narrow: 760px;
  --header-h: 64px;
  --sidebar-w: 248px;

  --transition: 160ms ease;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font: inherit; cursor: pointer; }
ul, ol { padding-left: 1.25rem; }
h1, h2, h3, h4, h5 { color: var(--heading); line-height: 1.2; font-weight: 700; letter-spacing: -0.01em; }
h1 { font-size: var(--fs-4xl); }
h2 { font-size: var(--fs-3xl); }
h3 { font-size: var(--fs-2xl); }
:focus-visible { outline: 3px solid rgba(59, 91, 219, 0.45); outline-offset: 2px; border-radius: 4px; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

/* ---------- Layout helpers ---------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--sp-4); }
.container-narrow { max-width: var(--container-narrow); }
.section { padding-block: var(--sp-7); }
.section-alt { background: var(--surface); }
.grid { display: grid; gap: var(--sp-5); }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--sp-2); }
.gap-3 { gap: var(--sp-3); }
.gap-4 { gap: var(--sp-4); }
.text-center { text-align: center; }
.muted { color: var(--text-muted); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.eyebrow { display: inline-block; font-size: var(--fs-sm); font-weight: 600; color: var(--color-primary); letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: var(--sp-3); }
.lead { font-size: var(--fs-lg); color: var(--text-muted); max-width: 60ch; }
.section-head { max-width: 62ch; margin-inline: auto; margin-bottom: var(--sp-6); text-align: center; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2);
  min-height: 44px; padding: 0.6rem 1.15rem;
  border: 1px solid transparent; border-radius: var(--radius);
  font-weight: 600; font-size: var(--fs-sm); line-height: 1;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  text-decoration: none; white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-secondary { background: var(--color-secondary); color: #fff; }
.btn-secondary:hover { filter: brightness(0.95); }
.btn-outline { background: var(--surface); color: var(--color-primary); border-color: var(--border-strong); }
.btn-outline:hover { border-color: var(--color-primary); background: var(--color-primary-light); }
.btn-ghost { background: transparent; color: var(--text); }
.btn-ghost:hover { background: var(--surface-alt); }
.btn-danger { background: var(--color-error); color: #fff; }
.btn-danger:hover { filter: brightness(0.95); }
.btn-lg { min-height: 52px; padding: 0.85rem 1.6rem; font-size: var(--fs-base); }
.btn-sm { min-height: 36px; padding: 0.4rem 0.75rem; font-size: var(--fs-xs); border-radius: var(--radius-sm); }
.btn-block { width: 100%; }
.btn-google {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem;
  background: var(--surface); color: var(--text); border: 1px solid var(--border-strong);
}
.btn-google:hover { background: var(--surface-alt); border-color: var(--color-neutral); }
.auth-divider {
  display: flex; align-items: center; text-align: center; margin: var(--sp-4) 0;
  color: var(--text-muted); font-size: var(--fs-sm);
}
.auth-divider::before, .auth-divider::after {
  content: ""; flex: 1; height: 1px; background: var(--border);
}
.auth-divider span { padding: 0 var(--sp-3); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.55; cursor: not-allowed; pointer-events: none; }
.btn.is-loading { color: transparent !important; position: relative; pointer-events: none; }
.btn.is-loading::after {
  content: ""; position: absolute; width: 18px; height: 18px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.5); border-top-color: #fff;
  animation: spin 0.7s linear infinite;
}
.btn-outline.is-loading::after, .btn-ghost.is-loading::after { border-color: rgba(59,91,219,0.3); border-top-color: var(--color-primary); }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Cards ---------- */
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: var(--sp-5); box-shadow: var(--shadow-sm);
}
.card-hover { transition: transform var(--transition), box-shadow var(--transition); }
.card-hover:hover { transform: translateY(-3px); box-shadow: var(--shadow); }

/* ---------- Badges ---------- */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 10px; border-radius: var(--radius-full);
  font-size: var(--fs-xs); font-weight: 600; line-height: 1.4;
  border: 1px solid transparent;
}
.badge .dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; flex: none; }
.badge-indexed { background: var(--color-success-bg); color: #0f7a5a; }
.badge-pending { background: var(--color-warning-bg); color: #a5680a; }
.badge-processing { background: var(--color-info-bg); color: var(--color-primary-dark); }
.badge-failed { background: var(--color-error-bg); color: #b23434; }
.badge-not-indexed { background: var(--color-neutral-bg); color: #475569; }
.badge-notchecked { background: var(--color-neutral-bg); color: #475569; }
.badge-paused { background: var(--color-neutral-bg); color: #475569; }
.badge-engine { background: var(--color-neutral-bg); color: #475569; font-size: var(--fs-xs); }

/* Engine badges — colored circle with initial */
.badge-google,
.badge-bing,
.badge-yandex { font-size: var(--fs-xs); }
.badge-google { background: #e8f0fe; color: #1967d2; }
.badge-bing   { background: #e6f7f5; color: #008373; }
.badge-yandex { background: #fde8e8; color: #cc0000; }
.badge-google::before,
.badge-bing::before,
.badge-yandex::before {
  width: 15px; height: 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 9px; font-weight: 800;
  color: #fff;
  border-radius: 50%;
}
.badge-google::before { content: "G"; background: #4285F4; }
.badge-bing::before   { content: "B"; background: #008373; }
.badge-yandex::before { content: "Y"; background: #cc0000; }

/* Help icon with tooltip */
.help-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--color-neutral-bg); color: var(--color-neutral);
  font-size: 10px; font-weight: 700;
  cursor: help;
  margin-left: 4px;
  vertical-align: middle;
  position: relative;
}
.help-icon:hover, .help-icon:focus {
  background: var(--color-primary-light); color: var(--color-primary);
}
.help-icon::after {
  content: attr(aria-label);
  position: absolute; bottom: calc(100% + 8px); left: 50%;
  transform: translateX(-50%);
  background: var(--color-text); color: #fff;
  padding: 6px 10px; border-radius: 6px;
  font-size: var(--fs-xs); font-weight: 400;
  white-space: normal; width: 280px;
  text-align: left; line-height: 1.4;
  pointer-events: none; opacity: 0;
  transition: opacity .15s;
  z-index: 100;
}
.help-icon:hover::after, .help-icon:focus::after { opacity: 1; }

/* ---------- Forms ---------- */
.form-group { margin-bottom: var(--sp-4); }
.label { display: block; font-size: var(--fs-sm); font-weight: 600; margin-bottom: var(--sp-2); color: var(--heading); }
.input, .select, .textarea {
  width: 100%; min-height: 44px; padding: 0.6rem 0.8rem;
  font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--border-strong); border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.textarea { min-height: 120px; resize: vertical; line-height: 1.5; }
.input:focus, .select:focus, .textarea:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(59,91,219,0.15); }
.input:disabled, .select:disabled, .textarea:disabled,
.input[readonly], .select[readonly], .textarea[readonly] { background: #f1f3f7; color: var(--text-muted); cursor: not-allowed; opacity: 0.85; }
.input.is-invalid, .select.is-invalid { border-color: var(--color-error); }
.input.is-valid { border-color: var(--color-success); }
.field-hint { font-size: var(--fs-xs); color: var(--text-muted); margin-top: var(--sp-1); }
.field-error { font-size: var(--fs-xs); color: var(--color-error); margin-top: var(--sp-1); display: none; }
.field-error.show { display: block; }
.input-group { position: relative; }
.input-group .toggle-pw {
  position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  background: none; border: none; color: var(--text-muted); padding: 6px 8px; border-radius: var(--radius-sm);
}
.checkbox-row { display: flex; align-items: flex-start; gap: var(--sp-2); font-size: var(--fs-sm); }
.checkbox-row input { width: 20px; height: 20px; margin-top: 2px; accent-color: var(--color-primary); flex: none; }

/* password strength */
.pw-strength { height: 6px; border-radius: var(--radius-full); background: var(--border); margin-top: var(--sp-2); overflow: hidden; }
.pw-strength span { display: block; height: 100%; width: 0; transition: width var(--transition), background var(--transition); }
.pw-strength-label { font-size: var(--fs-xs); margin-top: var(--sp-1); color: var(--text-muted); }

/* ---------- Alerts ---------- */
.alert { display: flex; gap: var(--sp-3); padding: var(--sp-3) var(--sp-4); border-radius: var(--radius); border: 1px solid; font-size: var(--fs-sm); align-items: flex-start; }
.alert-icon { flex: none; margin-top: 1px; }
.alert-success { background: var(--color-success-bg); border-color: #b8e6d4; color: #0f7a5a; }
.alert-warning { background: var(--color-warning-bg); border-color: #f2d9a8; color: #a5680a; }
.alert-info { background: var(--color-info-bg); border-color: #c9d3f8; color: var(--color-primary-dark); }
.alert-error { background: var(--color-error-bg); border-color: #f0c4c4; color: #b23434; }

/* ---------- Tables ---------- */
.table-wrap { width: 100%; overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); }
table.data { width: 100%; border-collapse: collapse; min-width: 720px; }
table.data th, table.data td { padding: 0.75rem 1rem; text-align: left; font-size: var(--fs-sm); border-bottom: 1px solid var(--border); vertical-align: middle; }
table.data th { background: var(--surface-alt); color: var(--text-muted); font-weight: 600; font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: 0.03em; white-space: nowrap; }
table.data tbody tr:hover { background: var(--surface-alt); }
table.data tbody tr:last-child td { border-bottom: none; }
.cell-url { font-weight: 500; color: var(--heading); max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.table-checkbox { width: 18px; height: 18px; accent-color: var(--color-primary); }

/* ---------- Pagination ---------- */
.pagination { display: flex; flex-wrap: wrap; gap: var(--sp-2); align-items: center; justify-content: center; margin-top: var(--sp-5); }
.pagination button { min-width: 40px; min-height: 40px; border: 1px solid var(--border-strong); background: var(--surface); border-radius: var(--radius-sm); color: var(--text); }
.pagination button[aria-current="page"] { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.pagination button:disabled { opacity: 0.4; cursor: not-allowed; }

/* ---------- Tabs ---------- */
.tabs { display: flex; gap: var(--sp-1); border-bottom: 1px solid var(--border); overflow-x: auto; }
.tab { background: none; border: none; padding: 0.7rem 1rem; font-weight: 600; font-size: var(--fs-sm); color: var(--text-muted); border-bottom: 2px solid transparent; white-space: nowrap; }
.tab[aria-selected="true"] { color: var(--color-primary); border-bottom-color: var(--color-primary); }
.tab-panel { padding-top: var(--sp-5); }
.tab-panel[hidden] { display: none; }

/* ---------- Dropdown ---------- */
.dropdown { position: relative; }
.dropdown-menu {
  position: absolute; right: 0; top: calc(100% + 6px); min-width: 200px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); padding: var(--sp-2); z-index: 60; display: none;
}
.dropdown-menu.open { display: block; }
.dropdown-menu a, .dropdown-menu button { display: flex; align-items: center; gap: var(--sp-2); width: 100%; text-align: left; padding: 0.55rem 0.7rem; border-radius: var(--radius-sm); color: var(--text); background: none; border: none; font-size: var(--fs-sm); }
.dropdown-menu a:hover, .dropdown-menu button:hover { background: var(--surface-alt); text-decoration: none; }
.dropdown-divider { height: 1px; background: var(--border); margin: var(--sp-2) 0; }

/* ---------- Modal ---------- */
.modal-overlay { position: fixed; inset: 0; background: rgba(15,23,42,0.5); display: none; align-items: flex-end; justify-content: center; z-index: 100; padding: 0; }
.modal-overlay.open { display: flex; animation: fade 150ms ease; }
.modal {
  background: var(--surface); width: 100%; max-width: 520px; border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  max-height: 92vh; overflow-y: auto; box-shadow: var(--shadow-lg);
  animation: slideUp 200ms ease;
}
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: var(--sp-4) var(--sp-5); border-bottom: 1px solid var(--border); position: sticky; top: 0; background: var(--surface); }
.modal-body { padding: var(--sp-5); }
.modal-footer { padding: var(--sp-4) var(--sp-5); border-top: 1px solid var(--border); display: flex; gap: var(--sp-3); justify-content: flex-end; flex-wrap: wrap; }
.modal-close { background: none; border: none; color: var(--text-muted); border-radius: var(--radius-sm); width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center; }
.modal-close:hover { background: var(--surface-alt); }
@keyframes fade { from { opacity: 0; } }
@keyframes slideUp { from { transform: translateY(24px); opacity: 0; } }

/* ---------- Tooltip ---------- */
.tooltip { position: relative; border-bottom: 1px dotted var(--border-strong); cursor: help; }
.tooltip::after {
  content: attr(data-tip); position: absolute; bottom: calc(100% + 8px); left: 50%; transform: translateX(-50%);
  background: var(--heading); color: #fff; padding: 6px 10px; border-radius: var(--radius-sm); font-size: var(--fs-xs);
  white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity var(--transition); z-index: 70;
}
.tooltip:hover::after, .tooltip:focus::after { opacity: 1; }

/* ---------- Empty state ---------- */
.empty-state { text-align: center; padding: var(--sp-7) var(--sp-4); }
.empty-state .empty-icon { width: 64px; height: 64px; margin: 0 auto var(--sp-4); color: var(--color-primary); background: var(--color-primary-light); border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center; }
.empty-state h3 { margin-bottom: var(--sp-2); }
.empty-state p { color: var(--text-muted); max-width: 42ch; margin: 0 auto var(--sp-4); }

/* ---------- Skeleton ---------- */
.skeleton { background: linear-gradient(90deg, var(--surface-alt) 25%, #eef2f7 50%, var(--surface-alt) 75%); background-size: 200% 100%; animation: shimmer 1.4s infinite; border-radius: var(--radius-sm); }
@keyframes shimmer { to { background-position: -200% 0; } }

/* ---------- Toast ---------- */
.toast-container { position: fixed; top: 16px; right: 16px; left: 16px; z-index: 200; display: flex; flex-direction: column; gap: var(--sp-2); pointer-events: none; }
.toast {
  pointer-events: auto; display: flex; align-items: flex-start; gap: var(--sp-3);
  background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--color-primary);
  border-radius: var(--radius); padding: var(--sp-3) var(--sp-4); box-shadow: var(--shadow-lg);
  font-size: var(--fs-sm); animation: slideIn 200ms ease;
}
.toast.success { border-left-color: var(--color-success); }
.toast.warning { border-left-color: var(--color-warning); }
.toast.error { border-left-color: var(--color-error); }
.toast.info { border-left-color: var(--color-info); }
.toast strong { display: block; color: var(--heading); }
@keyframes slideIn { from { transform: translateX(20px); opacity: 0; } }

/* ---------- Progress ---------- */
.progress { height: 8px; border-radius: var(--radius-full); background: var(--border); overflow: hidden; }
.progress span { display: block; height: 100%; background: var(--color-primary); border-radius: var(--radius-full); transition: width 400ms ease; }
.progress.success span { background: var(--color-success); }
.progress.warning span { background: var(--color-warning); }

/* ==========================================================================
   PUBLIC SITE
   ========================================================================== */

/* ---------- Logo ---------- */
.logo { display: inline-flex; align-items: center; gap: var(--sp-2); font-weight: 800; font-size: var(--fs-lg); color: var(--heading); letter-spacing: -0.02em; }
.logo:hover { text-decoration: none; }
.logo-mark { width: 32px; height: 32px; flex: none; }
.logo-mark rect { fill: var(--color-primary); }
.logo b { color: var(--color-primary); }

/* ---------- Public header ---------- */
.site-header { position: sticky; top: 0; z-index: 80; background: rgba(255,255,255,0.9); backdrop-filter: saturate(180%) blur(10px); border-bottom: 1px solid var(--border); }
.site-header .bar { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: var(--sp-4); }
.nav-desktop { display: none; }
.nav-actions { display: none; align-items: center; gap: var(--sp-2); }

/* ---------- Language switch ---------- */
.lang-switch { position: relative; font-size: var(--fs-sm); font-weight: 500; text-decoration: none; }
.lang-switch summary { display: inline-flex; align-items: center; gap: 4px; padding: 6px 10px; border-radius: var(--radius); background: var(--color-primary-light); color: var(--color-primary); cursor: pointer; list-style: none; white-space: nowrap; user-select: none; text-decoration: none; }
.lang-switch summary::-webkit-details-marker { display: none; }
.lang-switch summary::marker { display: none; content: ""; }
.lang-chev { margin-left: 2px; transition: transform .2s; }
.lang-switch[open] .lang-chev { transform: rotate(180deg); }
.lang-dropdown { position: absolute; top: calc(100% + 6px); right: 0; min-width: 160px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-lg); padding: 4px; z-index: 100; }
.lang-option { display: flex; align-items: center; gap: 6px; padding: 8px 10px; border-radius: calc(var(--radius) - 2px); color: var(--text); text-decoration: none; white-space: nowrap; transition: background .12s; }
.lang-option:hover { background: var(--surface-alt); text-decoration: none; }
.lang-option.active { background: var(--color-primary-light); color: var(--color-primary); font-weight: 600; }

@media (max-width: 882px) {
  .lang-switch { margin-right: auto; }
}
.nav-toggle { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--heading); }
.mobile-nav { display: none; padding: var(--sp-4) 0 var(--sp-5); border-top: 1px solid var(--border); }
.mobile-nav.open { display: block; }
.mobile-nav a { display: block; padding: 0.75rem 0; font-weight: 600; color: var(--heading); border-bottom: 1px solid var(--border); }
.mobile-nav .mobile-actions { display: flex; flex-direction: column; gap: var(--sp-2); margin-top: var(--sp-4); }

/* ---------- Hero ---------- */
.hero { padding-block: var(--sp-7) var(--sp-6); }
.hero h1 { font-size: var(--fs-5xl); margin-bottom: var(--sp-4); }
.hero .lead { margin-bottom: var(--sp-5); }
.hero-ctas { display: flex; flex-wrap: wrap; gap: var(--sp-3); margin-bottom: var(--sp-5); }
.trust-points { display: flex; flex-direction: column; gap: var(--sp-2); font-size: var(--fs-sm); color: var(--text-muted); }
.trust-points li { list-style: none; display: flex; align-items: center; gap: var(--sp-2); }
.trust-points { padding-left: 0; }
.check-ic { color: var(--color-success); flex: none; }

/* ---------- Product mockup ---------- */
.mockup { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); overflow: hidden; }
.mockup-bar { display: flex; align-items: center; gap: 6px; padding: 10px 14px; background: var(--surface-alt); border-bottom: 1px solid var(--border); }
.mockup-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--border-strong); }
.mockup-body { padding: var(--sp-4); }
.mini-kpis { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-3); margin-bottom: var(--sp-4); }
.mini-kpi { border: 1px solid var(--border); border-radius: var(--radius); padding: var(--sp-3); }
.mini-kpi .num { font-size: var(--fs-2xl); font-weight: 700; color: var(--heading); }
.mini-kpi .lbl { font-size: var(--fs-xs); color: var(--text-muted); }
.activity-panel { border: 1px solid var(--border); border-radius: var(--radius); padding: var(--sp-3); }
.activity-panel h4 { font-size: var(--fs-sm); margin-bottom: var(--sp-2); }
.activity-row { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-2); padding: 6px 0; font-size: var(--fs-xs); border-top: 1px solid var(--border); }
.activity-row:first-of-type { border-top: none; }

/* ---------- Stats / social proof ---------- */
.stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-4); }
.stat { text-align: center; padding: var(--sp-4); }
.stat .num { font-size: var(--fs-3xl); font-weight: 800; color: var(--color-primary); }
.stat .lbl { font-size: var(--fs-sm); color: var(--text-muted); }

/* ---------- Feature grid ---------- */
.feature-grid { display: grid; grid-template-columns: 1fr; gap: var(--sp-4); }
.feature { display: flex; flex-direction: column; gap: var(--sp-2); }
.feature-ic { width: 44px; height: 44px; border-radius: var(--radius); background: var(--color-primary-light); color: var(--color-primary); display: flex; align-items: center; justify-content: center; margin-bottom: var(--sp-1); }
.feature h3 { font-size: var(--fs-lg); }
.feature p { font-size: var(--fs-sm); color: var(--text-muted); }

/* ---------- Steps ---------- */
.steps { display: grid; gap: var(--sp-5); counter-reset: step; }
.step { position: relative; padding-left: 56px; }
.step .step-num { position: absolute; left: 0; top: 0; width: 40px; height: 40px; border-radius: 50%; background: var(--color-primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; }
.step h3 { font-size: var(--fs-lg); margin-bottom: var(--sp-1); }
.step p { color: var(--text-muted); font-size: var(--fs-sm); }

/* ---------- Problem / Solution — Transformation card ---------- */
.status-bridge {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: var(--sp-6);
}
.bridge-pill {
  width: 48px;
  height: 6px;
  border-radius: 3px;
}
.bridge-muted  { background: #d1d5db; }
.bridge-amber  { background: #f59e0b; }
.bridge-teal   { background: #14b8a6; }
.bridge-green  { background: var(--color-success); }

.transform-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.transform-columns {
  display: grid;
  grid-template-columns: 1fr;
}
.transform-col {
  padding: var(--sp-6) var(--sp-5);
}
.transform-without {
  background: linear-gradient(135deg, #fafaf9 0%, #fef9f5 100%);
}
.transform-with {
  background: linear-gradient(135deg, #f8fdfb 0%, #f2fbf7 100%);
}
.transform-col-head {
  margin-bottom: var(--sp-4);
}
.transform-chip {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}
.chip-muted {
  background: #fef2f2;
  color: #b91c1c;
}
.chip-green {
  background: var(--color-success-bg);
  color: #047857;
}
.transform-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: var(--sp-3);
}
.transform-list li {
  display: flex;
  gap: var(--sp-3);
  align-items: flex-start;
  font-size: var(--fs-sm);
  line-height: 1.5;
}
.transform-dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-top: 0.45em;
}
.dot-amber { background: #f59e0b; box-shadow: 0 0 0 3px #fef3c7; }
.transform-check {
  flex: none;
  color: var(--color-success);
  margin-top: 0.2em;
}
.transform-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--border-strong);
  padding: 0 var(--sp-4);
}
.transform-divider svg {
  transform: rotate(90deg);
}

@media (min-width: 768px) {
  .transform-columns {
    grid-template-columns: 1fr auto 1fr;
  }
  .transform-divider svg {
    transform: none;
  }
  .transform-col {
    padding: var(--sp-7) var(--sp-6);
  }
}

/* ---------- Bar chart (CSS) ---------- */
.bar-chart { display: flex; align-items: flex-end; gap: 6px; height: 160px; padding-top: var(--sp-3); }
.bar-chart .bar { flex: 1; background: var(--color-primary); border-radius: 4px 4px 0 0; min-height: 4px; position: relative; transition: height 500ms ease; }
.bar-chart .bar.alt { background: var(--color-secondary); }
.chart-legend { display: flex; gap: var(--sp-4); flex-wrap: wrap; font-size: var(--fs-xs); color: var(--text-muted); margin-top: var(--sp-3); }
.chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 6px; vertical-align: middle; }

/* line chart svg */
.line-chart svg { width: 100%; height: auto; }

/* ---------- Use cases ---------- */
.usecase { display: flex; gap: var(--sp-3); align-items: flex-start; }
.usecase .uc-ic { width: 40px; height: 40px; flex: none; border-radius: var(--radius); background: var(--color-secondary-light); color: var(--color-secondary); display: flex; align-items: center; justify-content: center; }
.usecase h3 { font-size: var(--fs-base); }
.usecase p { font-size: var(--fs-sm); color: var(--text-muted); }

/* ---------- Pricing ---------- */
.pricing-grid { display: grid; gap: var(--sp-5); grid-template-columns: 1fr; }
.plan { border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--sp-6); background: var(--surface); display: flex; flex-direction: column; }
.plan.popular { border-color: var(--color-primary); box-shadow: var(--shadow); position: relative; }
.plan.popular::before { content: "Most popular"; position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--color-primary); color: #fff; font-size: var(--fs-xs); font-weight: 600; padding: 4px 12px; border-radius: var(--radius-full); }
.plan h3 { font-size: var(--fs-xl); }
.plan .price { font-size: var(--fs-4xl); font-weight: 800; color: var(--heading); margin: var(--sp-2) 0; }
.plan .price small { font-size: var(--fs-sm); font-weight: 500; color: var(--text-muted); }
.plan ul { list-style: none; padding: 0; display: grid; gap: var(--sp-2); margin: var(--sp-4) 0; }
.plan li { display: flex; gap: var(--sp-2); font-size: var(--fs-sm); }
.plan .btn { margin-top: auto; }
.billing-toggle { display: inline-flex; align-items: center; gap: var(--sp-3); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-full); padding: 4px; }
.billing-toggle button { border: none; background: none; padding: 0.5rem 1rem; border-radius: var(--radius-full); font-weight: 600; font-size: var(--fs-sm); color: var(--text-muted); }
.billing-toggle button.active { background: var(--color-primary); color: #fff; }
.save-badge { background: var(--color-secondary-light); color: #0a7a5a; font-size: var(--fs-xs); font-weight: 600; padding: 2px 8px; border-radius: var(--radius-full); }

/* comparison table */
.compare-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-lg); }
table.compare { width: 100%; border-collapse: collapse; min-width: 560px; background: var(--surface); }
table.compare th, table.compare td { padding: 0.8rem 1rem; text-align: center; border-bottom: 1px solid var(--border); font-size: var(--fs-sm); }
table.compare th:first-child, table.compare td:first-child { text-align: left; font-weight: 600; }
table.compare thead th { background: var(--surface-alt); }
.yes { color: var(--color-success); font-weight: 700; }
.no { color: var(--text-muted); }

/* ---------- FAQ (accordion) ---------- */
.faq { display: grid; gap: var(--sp-2); max-width: var(--container-narrow); margin-inline: auto; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.faq-q { width: 100%; text-align: left; background: none; border: none; padding: var(--sp-4); font-weight: 600; color: var(--heading); display: flex; justify-content: space-between; align-items: center; gap: var(--sp-3); min-height: 56px; }
.faq-q .chev { transition: transform var(--transition); flex: none; }
.faq-item.open .faq-q .chev { transform: rotate(180deg); }
.faq-a { padding: 0 var(--sp-4); max-height: 0; overflow: hidden; transition: max-height var(--transition), padding var(--transition); color: var(--text-muted); font-size: var(--fs-sm); }
.faq-item.open .faq-a { padding: 0 var(--sp-4) var(--sp-4); max-height: 400px; }

/* ---------- CTA band ---------- */
.cta-band { background: var(--heading); color: var(--text-inverse); border-radius: var(--radius-lg); padding: var(--sp-7) var(--sp-5); text-align: center; }
.cta-band h2 { color: #fff; margin-bottom: var(--sp-3); }
.cta-band p { color: #cbd5e1; max-width: 52ch; margin: 0 auto var(--sp-5); }

/* ---------- Footer ---------- */
.site-footer { background: var(--heading); color: #cbd5e1; padding-block: var(--sp-7) var(--sp-5); margin-top: var(--sp-8); }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: var(--sp-6); }
.footer-brand p { font-size: var(--fs-sm); max-width: 34ch; margin-top: var(--sp-3); }
.site-footer .logo { color: #fff; }
.footer-col h4 { color: #fff; font-size: var(--fs-sm); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: var(--sp-3); }
.footer-col ul { list-style: none; padding: 0; display: grid; gap: var(--sp-2); }
.footer-col a { color: #cbd5e1; font-size: var(--fs-sm); }
.footer-col a:hover { color: #fff; }
.footer-social { display: flex; gap: var(--sp-3); margin-top: var(--sp-4); }
.footer-social a { width: 40px; height: 40px; border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.15); display: flex; align-items: center; justify-content: center; color: #cbd5e1; }
.footer-social a:hover { border-color: rgba(255,255,255,0.4); color: #fff; }
.footer-langs { display: flex; flex-wrap: wrap; gap: var(--sp-4); margin-top: var(--sp-5); padding-top: var(--sp-4); border-top: 1px solid rgba(255,255,255,0.08); }
.footer-langs a { color: #94a3b8; font-size: var(--fs-sm); text-decoration: underline; text-underline-offset: 4px; }
.footer-langs a:hover { color: #fff; }
.footer-langs a[aria-current] { color: #fff; font-weight: 600; text-decoration: none; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); margin-top: var(--sp-6); padding-top: var(--sp-4); font-size: var(--fs-xs); display: flex; flex-direction: column; gap: var(--sp-2); }

/* ---------- Auth pages ---------- */
.auth-wrap { min-height: 100vh; display: grid; grid-template-columns: 1fr; }
.auth-panel { display: none; background: var(--heading); color: #fff; padding: var(--sp-8) var(--sp-6); flex-direction: column; justify-content: center; }
.auth-panel h2 { color: #fff; }
.auth-panel ul { list-style: none; padding: 0; display: grid; gap: var(--sp-4); margin-top: var(--sp-5); }
.auth-panel li { display: flex; gap: var(--sp-3); }
.auth-panel .ap-ic { color: var(--color-secondary); flex: none; }
.auth-main { display: flex; align-items: center; justify-content: center; padding: var(--sp-6) var(--sp-4); }
.auth-card { width: 100%; max-width: 420px; }
.auth-card .logo { margin-bottom: var(--sp-5); }
.divider-or { text-align: center; color: var(--text-muted); font-size: var(--fs-sm); margin: var(--sp-4) 0; }

/* ==========================================================================
   DASHBOARD
   ========================================================================== */
.app { min-height: 100vh; }
.app-topbar {
  position: sticky; top: 0; z-index: 70; height: var(--header-h); background: var(--surface);
  border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: var(--sp-3);
  padding-inline: var(--sp-4);
}
.app-search { display: none; flex: 1; max-width: 420px; position: relative; }
.app-search input { padding-left: 38px; min-height: 40px; }
.app-search svg { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); color: var(--text-muted); }
.topbar-actions { display: flex; align-items: center; gap: var(--sp-2); margin-left: auto; }
.icon-btn { width: 42px; height: 42px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--surface); color: var(--text); display: inline-flex; align-items: center; justify-content: center; position: relative; }
.icon-btn:hover { background: var(--surface-alt); }
.icon-btn .notif-dot { position: absolute; top: 8px; right: 8px; width: 8px; height: 8px; background: var(--color-error); border-radius: 50%; border: 2px solid var(--surface); }
.avatar-btn { display: flex; align-items: center; gap: var(--sp-2); border: 1px solid var(--border); background: var(--surface); border-radius: var(--radius-full); padding: 4px 10px 4px 4px; min-height: 42px; }
.avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--color-primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: var(--fs-sm); flex: none; }
.avatar-name { display: none; font-size: var(--fs-sm); font-weight: 600; }

.app-body { display: flex; }
.sidebar {
  position: fixed; inset: 0 auto 0 0; width: var(--sidebar-w); background: var(--surface);
  border-right: 1px solid var(--border); z-index: 90; transform: translateX(-100%);
  transition: transform var(--transition); display: flex; flex-direction: column; padding: var(--sp-4);
  overflow-y: auto;
}
.sidebar.open { transform: translateX(0); }
.sidebar .logo { margin-bottom: var(--sp-5); padding-inline: var(--sp-2); }
.sidebar nav { display: grid; gap: 2px; }
.sidebar nav a { display: flex; align-items: center; gap: var(--sp-3); padding: 0.65rem 0.75rem; border-radius: var(--radius); color: var(--text); font-weight: 500; font-size: var(--fs-sm); min-height: 44px; }
.sidebar nav a:hover { background: var(--surface-alt); text-decoration: none; }
.sidebar nav a.active { background: var(--color-primary-light); color: var(--color-primary-dark); font-weight: 600; }
.sidebar nav a svg { flex: none; color: var(--text-muted); }
.sidebar nav a.active svg { color: var(--color-primary); }
.sidebar .nav-sep { height: 1px; background: var(--border); margin: var(--sp-3) 0; }
.sidebar-footer { margin-top: auto; padding-top: var(--sp-4); }
.sidebar-backdrop { position: fixed; inset: 0; background: rgba(15,23,42,0.5); z-index: 85; display: none; }
.sidebar-backdrop.open { display: block; }

.app-main { flex: 1; min-width: 0; padding: var(--sp-5) var(--sp-4) var(--sp-8); }
.page-head { margin-bottom: var(--sp-5); }
.page-head h1 { font-size: var(--fs-2xl); }
.page-head p { color: var(--text-muted); font-size: var(--fs-sm); }
.page-head .head-row { display: flex; flex-direction: column; gap: var(--sp-3); }
.page-actions { display: flex; gap: var(--sp-2); flex-wrap: wrap; }

/* KPI cards */
.kpi-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-3); margin-bottom: var(--sp-5); }
.kpi { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--sp-4); }
.kpi .kpi-top { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-2); }
.kpi .kpi-ic { width: 36px; height: 36px; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; }
.kpi .num { font-size: var(--fs-2xl); font-weight: 800; color: var(--heading); margin-top: var(--sp-2); }
.kpi .lbl { font-size: var(--fs-xs); color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.03em; }
.kpi .trend { font-size: var(--fs-xs); font-weight: 600; }
.trend.up { color: var(--color-success); }
.trend.down { color: var(--color-error); }

.dash-grid { display: grid; grid-template-columns: 1fr; gap: var(--sp-5); }
.section-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--sp-5); }
.section-card .sc-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--sp-4); gap: var(--sp-3); }
.section-card .sc-head h2 { font-size: var(--fs-lg); }

/* quick actions */
.quick-actions { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-3); }
.quick-action { display: flex; flex-direction: column; align-items: flex-start; gap: var(--sp-2); padding: var(--sp-4); border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--text); text-align: left; }
.quick-action:hover { border-color: var(--color-primary); background: var(--color-primary-light); text-decoration: none; }
.quick-action .qa-ic { color: var(--color-primary); }
.quick-action span { font-weight: 600; font-size: var(--fs-sm); }

/* checklist */
.checklist { list-style: none; padding: 0; display: grid; gap: var(--sp-2); }
.checklist li { display: flex; align-items: center; gap: var(--sp-3); padding: var(--sp-3); border: 1px solid var(--border); border-radius: var(--radius); font-size: var(--fs-sm); }
.checklist .cl-check { width: 24px; height: 24px; border-radius: 50%; border: 2px solid var(--border-strong); flex: none; display: flex; align-items: center; justify-content: center; color: transparent; }
.checklist li.done .cl-check { background: var(--color-success); border-color: var(--color-success); color: #fff; }
.checklist li.done span { text-decoration: line-through; color: var(--text-muted); }

/* usage */
.usage-row { margin-bottom: var(--sp-4); }
.usage-row .usage-head { display: flex; justify-content: space-between; font-size: var(--fs-sm); margin-bottom: var(--sp-2); }

/* filters panel */
.filters-panel { border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--surface); margin-bottom: var(--sp-4); }
.filters-head { display: flex; align-items: center; justify-content: space-between; padding: var(--sp-3) var(--sp-4); }
.filters-head button { background: none; border: none; color: var(--color-primary); font-weight: 600; font-size: var(--fs-sm); }
.filters-body { padding: 0 var(--sp-4) var(--sp-4); display: none; grid-template-columns: 1fr; gap: var(--sp-3); }
.filters-body.open { display: grid; }
.toolbar { display: flex; flex-direction: column; gap: var(--sp-3); margin-bottom: var(--sp-4); }
.toolbar .search-box {
  position: relative; flex: 1; min-width: 0;
  display: flex; align-items: center; gap: var(--sp-2);
  border: 1px solid var(--border-strong); border-radius: var(--radius);
  background: var(--surface);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.toolbar .search-box:focus-within { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(59,91,219,0.15); }
.toolbar .search-box svg { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--text-muted); flex: none; }
.toolbar .search-box input {
  border: none; outline: none; background: none;
  min-height: 44px; width: 100%; padding: 0 0.8rem 0 38px;
  font: inherit; color: var(--text);
}
.toolbar .search-box input::placeholder { color: var(--text-muted); }
.toolbar .search-box .search-clear {
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  width: 28px; height: 28px; padding: 0; border: none; border-radius: var(--radius-sm);
  background: transparent; color: var(--text-muted);
  display: inline-flex; align-items: center; justify-content: center;
  transition: background var(--transition), color var(--transition);
}
.toolbar .search-box .search-clear:hover { background: var(--surface-alt); color: var(--text); }
.bulk-bar { display: none; align-items: center; gap: var(--sp-3); background: var(--color-primary-light); border: 1px solid #c9d3f8; border-radius: var(--radius); padding: var(--sp-2) var(--sp-3); margin-bottom: var(--sp-3); font-size: var(--fs-sm); flex-wrap: wrap; }
.bulk-bar.show { display: flex; }

/* card view of backlinks (mobile) */
.bl-cards { display: grid; gap: var(--sp-3); }
.bl-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: var(--sp-4); }
.bl-card .bl-top { display: flex; justify-content: space-between; gap: var(--sp-2); align-items: flex-start; }
.bl-card .bl-url { font-weight: 600; word-break: break-all; font-size: var(--fs-sm); }
.bl-card dl { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-2); margin-top: var(--sp-3); font-size: var(--fs-xs); }
.bl-card dt { color: var(--text-muted); }
.bl-card dd { color: var(--heading); font-weight: 500; }

/* campaign cards */
.campaign-grid { display: grid; grid-template-columns: 1fr; gap: var(--sp-4); }
.campaign-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--sp-5); }
.campaign-card .cc-head { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--sp-2); margin-bottom: var(--sp-3); }
.campaign-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-3); margin: var(--sp-4) 0; }
.campaign-stats div { text-align: center; }
.campaign-stats .n { font-size: var(--fs-xl); font-weight: 700; color: var(--heading); }
.campaign-stats .l { font-size: var(--fs-xs); color: var(--text-muted); }

/* upload dropzone */
.dropzone { border: 2px dashed var(--border-strong); border-radius: var(--radius-lg); background: var(--surface-alt); padding: var(--sp-7) var(--sp-4); text-align: center; transition: border-color var(--transition), background var(--transition); }
.dropzone.dragover { border-color: var(--color-primary); background: var(--color-primary-light); }
.dropzone .dz-ic { width: 56px; height: 56px; margin: 0 auto var(--sp-3); color: var(--color-primary); }
.upload-steps { display: flex; gap: var(--sp-2); margin-bottom: var(--sp-5); flex-wrap: wrap; }
.upload-steps .ustep { display: flex; align-items: center; gap: var(--sp-2); font-size: var(--fs-sm); color: var(--text-muted); font-weight: 600; }
.upload-steps .ustep .n { width: 26px; height: 26px; border-radius: 50%; border: 2px solid var(--border-strong); display: flex; align-items: center; justify-content: center; font-size: var(--fs-xs); }
.upload-steps .ustep.active { color: var(--color-primary); }
.upload-steps .ustep.active .n { border-color: var(--color-primary); background: var(--color-primary); color: #fff; }
.upload-steps .ustep.done .n { border-color: var(--color-success); background: var(--color-success); color: #fff; }

.settings-layout { display: grid; grid-template-columns: 1fr; gap: var(--sp-5); }
.settings-nav { display: flex; gap: var(--sp-1); overflow-x: auto; border-bottom: 1px solid var(--border); }
.settings-nav button { background: none; border: none; padding: 0.7rem 0.9rem; font-weight: 600; font-size: var(--fs-sm); color: var(--text-muted); border-bottom: 2px solid transparent; white-space: nowrap; }
.settings-nav button.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }
.settings-panel[hidden] { display: none; }
.danger-zone { border: 1px solid #f0c4c4; background: var(--color-error-bg); border-radius: var(--radius-lg); padding: var(--sp-5); }
.danger-zone h3 { color: #b23434; }

.avatar-lg { width: 72px; height: 72px; border-radius: 50%; background: var(--color-primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: var(--fs-2xl); }

/* status timeline */
.timeline { list-style: none; padding: 0; display: grid; gap: var(--sp-4); position: relative; margin-left: var(--sp-2); }
.timeline li { position: relative; padding-left: var(--sp-6); }
.timeline li::before { content: ""; position: absolute; left: 5px; top: 4px; width: 12px; height: 12px; border-radius: 50%; background: var(--color-primary); }
.timeline li::after { content: ""; position: absolute; left: 10px; top: 16px; bottom: -18px; width: 2px; background: var(--border); }
.timeline li:last-child::after { display: none; }
.timeline .tl-time { font-size: var(--fs-xs); color: var(--text-muted); }

/* detail modal grid */
.detail-grid { display: grid; grid-template-columns: 1fr; gap: var(--sp-3); }
.detail-grid dt { font-size: var(--fs-xs); color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.03em; }
.detail-grid dd { font-weight: 500; word-break: break-all; }

/* 404 */
.error-page { min-height: 80vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: var(--sp-6) var(--sp-4); }
.error-page .code { font-size: clamp(4rem, 20vw, 9rem); font-weight: 800; color: var(--color-primary); line-height: 1; }

/* utility */
.mt-4 { margin-top: var(--sp-4); }
.mt-5 { margin-top: var(--sp-5); }
.mb-4 { margin-bottom: var(--sp-4); }
.mb-5 { margin-bottom: var(--sp-5); }
.hide { display: none !important; }
.divider { height: 1px; background: var(--border); margin: var(--sp-5) 0; }
.tag-pill { display: inline-flex; align-items: center; gap: 4px; background: var(--surface-alt); border: 1px solid var(--border); border-radius: var(--radius-full); padding: 2px 8px; font-size: var(--fs-xs); }

/* breadcrumbs */
.breadcrumbs { display: flex; gap: var(--sp-2); font-size: var(--fs-sm); color: var(--text-muted); flex-wrap: wrap; margin-bottom: var(--sp-4); }
.breadcrumbs a { color: var(--text-muted); }
.breadcrumbs a:hover { color: var(--color-primary); }

/* ==========================================================================
   RESPONSIVE — progressive enhancement (min-width)
   ========================================================================== */
@media (min-width: 640px) {
  .stats-grid { grid-template-columns: repeat(4, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .kpi-grid { grid-template-columns: repeat(3, 1fr); }
  .quick-actions { grid-template-columns: repeat(4, 1fr); }
  .mini-kpis { grid-template-columns: repeat(4, 1fr); }
  .modal-overlay { align-items: center; padding: var(--sp-4); }
  .modal { border-radius: var(--radius-lg); }
  .toast-container { left: auto; width: 360px; }
  .page-head .head-row { flex-direction: row; align-items: center; justify-content: space-between; }
  .campaign-grid { grid-template-columns: repeat(2, 1fr); }
  .filters-body.open { grid-template-columns: repeat(2, 1fr); }
  .toolbar { flex-direction: row; align-items: center; }
  .toolbar .search-box { flex: 1; }
}

@media (min-width: 768px) {
  .container { padding-inline: var(--sp-5); }
  .section { padding-block: var(--sp-8); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr 1fr; }
  .app-search { display: block; }
  .avatar-name { display: inline; }
  .pricing-grid { grid-template-columns: repeat(3, 1fr); }
  .feature-grid { grid-template-columns: repeat(3, 1fr); }
  .kpi-grid { grid-template-columns: repeat(5, 1fr); }
  .campaign-grid { grid-template-columns: repeat(3, 1fr); }
  .settings-layout { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .nav-desktop { display: flex; align-items: center; gap: var(--sp-5); }
  .nav-desktop a { color: var(--heading); font-weight: 500; font-size: var(--fs-sm); }
  .nav-actions { display: flex; }
  .nav-toggle { display: none; }
  .mobile-nav { display: none !important; }
  .hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-7); align-items: center; }
  .auth-wrap { grid-template-columns: 1.1fr 1fr; }
  .auth-panel { display: flex; }

  /* Persistent sidebar on desktop */
  .sidebar { transform: none; position: sticky; top: 0; height: 100vh; }
  .sidebar-backdrop { display: none !important; }
  .app-body { }
  .nav-toggle-app { display: none !important; }
  .split-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-5); }
  .split-3-2 { display: grid; grid-template-columns: 3fr 2fr; gap: var(--sp-5); }
}

@media (min-width: 1280px) {
  .container { padding-inline: var(--sp-6); }
}