/* ============================================================
   ENGINELINK · style.css
   Navy (#1a2f5a) + Amber (#e8a020) · Pro B2B
   ============================================================ */

/* ── Design tokens ── */
:root {
  --navy:        #1a2f5a;
  --navy-dark:   #0f1e3a;
  --navy-light:  #2a4a8a;
  --amber:       #e8a020;
  --amber-dark:  #c6851a;
  --bg:          #f5f6fa;
  --white:       #ffffff;
  --text:        #2d3748;
  --text-light:  #718096;
  --border:      #e2e8f0;
  --excellent:   #2f855a;
  --excellent-bg:#f0fff4;
  --good:        #2b6cb0;
  --good-bg:     #ebf8ff;
  --fair:        #c05621;
  --fair-bg:     #fffaf0;
  --radius:      8px;
  --radius-lg:   16px;
  --shadow:      0 2px 12px rgba(0,0,0,.08);
  --shadow-lg:   0 8px 32px rgba(0,0,0,.14);
  --transition:  .18s ease;
  --header-h:    64px;
}

/* ── Reset ── */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html  { scroll-behavior: smooth; }
body  { font-family: 'Inter', system-ui, -apple-system, sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }
img   { max-width: 100%; display: block; }
a     { text-decoration: none; color: inherit; }
ul    { list-style: none; }
input, select, textarea, button { font-family: inherit; }

/* ── Layout ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ── Type scale ── */
h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); font-weight: 700; line-height: 1.2; }
h2 { font-size: clamp(1.35rem, 3vw, 2rem);    font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 600; }
h4 { font-size: .95rem;  font-weight: 600; }

/* ── SPA sections ── */
.section {
  display: none;
  padding-top: calc(var(--header-h) + 36px);
  padding-bottom: 80px;
  min-height: calc(100vh - var(--header-h));
  animation: fadeIn .2s ease;
}
.section.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* home hero bleeds under header */
#section-home { padding-top: 0; }

/* ── HEADER ── */
.header {
  position: fixed; inset: 0 0 auto;
  height: var(--header-h);
  background: var(--navy);
  box-shadow: 0 2px 16px rgba(0,0,0,.22);
  z-index: 100;
}
.header__inner { display: flex; align-items: center; gap: 20px; height: 100%; }

.logo { display: flex; align-items: center; gap: 8px; color: var(--white); font-size: 1.25rem; font-weight: 500; cursor: pointer; }
.logo__icon { font-size: 1.4rem; }
.logo__text strong { color: var(--amber); }

.nav { display: flex; gap: 2px; margin-left: auto; }
.nav__link {
  color: rgba(255,255,255,.72);
  padding: 6px 13px;
  border-radius: var(--radius);
  font-size: .88rem;
  cursor: pointer;
  transition: var(--transition);
}
.nav__link:hover,
.nav__link.active { color: var(--white); background: rgba(255,255,255,.12); }

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

.lang-toggle { display: flex; align-items: center; gap: 5px; color: rgba(255,255,255,.5); font-size: .82rem; }
.lang-btn { background: none; border: none; color: rgba(255,255,255,.55); font-size: .82rem; padding: 2px 5px; border-radius: 4px; cursor: pointer; transition: var(--transition); }
.lang-btn.active { color: var(--amber); font-weight: 700; }
.lang-btn:hover   { color: var(--white); }

.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 4px; margin-left: auto; cursor: pointer; }
.hamburger span { display: block; width: 22px; height: 2px; background: var(--white); border-radius: 2px; transition: var(--transition); }
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.mobile-nav {
  display: none; position: fixed;
  top: var(--header-h); left: 0; right: 0;
  background: var(--navy-dark);
  z-index: 99;
  padding: 12px 20px 20px;
  flex-direction: column; gap: 2px;
  box-shadow: 0 8px 24px rgba(0,0,0,.3);
}
.mobile-nav.open { display: flex; }
.mobile-nav__link { color: rgba(255,255,255,.8); padding: 10px 14px; border-radius: var(--radius); font-size: .95rem; cursor: pointer; transition: var(--transition); }
.mobile-nav__link:hover { background: rgba(255,255,255,.1); color: var(--white); }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: var(--radius);
  font-weight: 600; font-size: .88rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn--primary   { background: var(--amber);  color: var(--navy-dark); border-color: var(--amber);  }
.btn--primary:hover   { background: var(--amber-dark); border-color: var(--amber-dark); }
.btn--secondary { background: transparent; color: var(--white); border-color: rgba(255,255,255,.55); }
.btn--secondary:hover { background: rgba(255,255,255,.1); border-color: var(--white); }
.btn--outline   { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn--outline:hover   { background: var(--navy); color: var(--white); }
.btn--ghost     { background: transparent; color: var(--text-light); border-color: var(--border); }
.btn--ghost:hover     { border-color: var(--navy); color: var(--navy); }
.btn--sm  { padding: 6px 14px; font-size: .78rem; }
.btn--lg  { padding: 13px 28px; font-size: 1rem; }
.btn--full { width: 100%; margin-top: 8px; }

/* ── Badges ── */
.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; }
.badge--excellent { background: var(--excellent-bg); color: var(--excellent); }
.badge--good      { background: var(--good-bg);      color: var(--good); }
.badge--fair      { background: var(--fair-bg);       color: var(--fair); }
.badge--active    { background: #f0fff4; color: #2f855a; }
.badge--pending   { background: #fefcbf; color: #744210; }
.badge--sold      { background: var(--border);       color: #4a5568; }

.section-title { text-align: center; margin-bottom: 40px; color: var(--navy); }

/* ============================================================
   HOME
   ============================================================ */
.hero {
  background: linear-gradient(140deg, var(--navy-dark) 0%, var(--navy) 55%, var(--navy-light) 100%);
  color: var(--white);
  padding: calc(var(--header-h) + 72px) 0 72px;
}
.hero__inner   { display: grid; grid-template-columns: 1fr auto; gap: 60px; align-items: center; }
.hero__badge   {
  display: inline-block;
  background: rgba(232,160,32,.18); color: var(--amber);
  border: 1px solid rgba(232,160,32,.38);
  padding: 4px 14px; border-radius: 20px;
  font-size: .78rem; font-weight: 600; text-transform: uppercase; letter-spacing: .08em;
  margin-bottom: 18px;
}
.hero__title    { margin-bottom: 16px; }
.hero__subtitle { color: rgba(255,255,255,.72); max-width: 540px; font-size: 1.02rem; margin-bottom: 32px; }
.hero__ctas     { display: flex; gap: 14px; flex-wrap: wrap; }
.hero__stats    { display: flex; flex-direction: column; gap: 16px; }
.stat {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-lg);
  padding: 18px 26px; text-align: center; min-width: 136px;
}
.stat__num   { display: block; font-size: 2.4rem; font-weight: 700; color: var(--amber); line-height: 1; }
.stat__label { font-size: .75rem; color: rgba(255,255,255,.55); text-transform: uppercase; letter-spacing: .07em; margin-top: 4px; display: block; }

/* How it works */
.how-it-works { padding: 72px 0; }
.steps { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 24px; align-items: start; }
.step { text-align: center; }
.step__icon { font-size: 2.4rem; margin-bottom: 14px; }
.step h3    { color: var(--navy); margin-bottom: 8px; }
.step p     { color: var(--text-light); font-size: .9rem; }
.step__arrow { font-size: 1.8rem; color: var(--amber); align-self: flex-start; padding-top: 22px; }

/* Engine families */
.featured { padding: 0 0 72px; }
.engine-families { display: grid; grid-template-columns: repeat(auto-fill, minmax(176px, 1fr)); gap: 14px; }
.family-card {
  background: var(--white); border: 2px solid var(--border); border-radius: var(--radius-lg);
  padding: 20px; text-align: center; cursor: pointer; transition: var(--transition);
}
.family-card:hover { border-color: var(--amber); box-shadow: var(--shadow); transform: translateY(-2px); }
.family-card__name   { font-weight: 700; color: var(--navy); margin-bottom: 5px; }
.family-card__detail { color: var(--text-light); font-size: .78rem; margin-bottom: 8px; }
.family-card__tag    { background: var(--bg); color: var(--navy); font-size: .73rem; padding: 2px 10px; border-radius: 12px; display: inline-block; }

/* Seller pitch */
.seller-pitch { background: var(--navy); padding: 72px 0; }
.seller-pitch__inner { max-width: 680px; }
.seller-pitch h2   { color: var(--amber); margin-bottom: 24px; }
.pitch__list       { display: flex; flex-direction: column; gap: 12px; margin-bottom: 32px; }
.pitch__list li    { display: flex; gap: 12px; align-items: flex-start; color: rgba(255,255,255,.82); font-size: .95rem; }
.pitch__list li::before { content: "✓"; color: var(--amber); font-weight: 700; flex-shrink: 0; margin-top: 2px; }

/* ============================================================
   CATALOGUE
   ============================================================ */
.catalogue__layout { display: grid; grid-template-columns: 252px 1fr; gap: 32px; align-items: start; }
.catalogue__header { display: flex; align-items: baseline; gap: 12px; margin-bottom: 24px; }
.catalogue__header h2 { color: var(--navy); }
.catalogue__count  { color: var(--text-light); font-size: .88rem; }

.filters {
  background: var(--white); border-radius: var(--radius-lg);
  padding: 22px; box-shadow: var(--shadow);
  position: sticky; top: calc(var(--header-h) + 16px);
}
.filters__title { color: var(--navy); margin-bottom: 20px; }
.filter-group   { margin-bottom: 20px; }
.filter-group > label {
  display: block; font-weight: 600; font-size: .8rem;
  text-transform: uppercase; letter-spacing: .06em; color: var(--text-light); margin-bottom: 10px;
}
.checkbox-group { display: flex; flex-direction: column; gap: 8px; }
.checkbox-group label { display: flex; align-items: center; gap: 8px; font-size: .88rem; cursor: pointer; }
.checkbox-group input[type="checkbox"] { accent-color: var(--amber); width: 15px; height: 15px; }

select {
  width: 100%; padding: 8px 32px 8px 12px; border: 1.5px solid var(--border);
  border-radius: var(--radius); font-size: .88rem; background: var(--white); color: var(--text);
  transition: var(--transition); cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'%3E%3Cpath fill='%23718096' d='M5 7L0 2h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center;
}
select:focus { outline: none; border-color: var(--navy); }

.range-wrap       { display: flex; flex-direction: column; gap: 5px; }
input[type="range"] { width: 100%; accent-color: var(--amber); cursor: pointer; }
.range-wrap span  { font-size: .82rem; color: var(--navy); font-weight: 600; text-align: right; }

/* Engine grid & cards */
.engine-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 18px; }

.engine-card {
  background: var(--white); border-radius: var(--radius-lg);
  box-shadow: var(--shadow); overflow: hidden;
  border: 2px solid transparent; cursor: pointer; transition: var(--transition);
}
.engine-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: var(--amber); }

.engine-card__img {
  width: 100%; height: 172px; background: #e8ecf4;
  display: flex; align-items: center; justify-content: center;
  font-size: 3.5rem; color: #a0aec0;
}
.engine-card__body  { padding: 14px 16px; }
.engine-card__title { font-weight: 700; color: var(--navy); margin-bottom: 3px; }
.engine-card__seller { font-size: .8rem; color: var(--text-light); margin-bottom: 10px; }
.engine-card__meta  { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 6px; }
.engine-card__km    { font-size: .82rem; color: var(--text); font-weight: 500; }
.engine-card__km::before { content: "🏁 "; }
.engine-card__footer { padding: 0 16px 14px; display: flex; align-items: center; justify-content: space-between; }
.engine-card__price  { font-weight: 700; color: var(--navy); }

.empty-state { text-align: center; padding: 80px 20px; color: var(--text-light); grid-column: 1 / -1; }
.empty-state__icon { font-size: 3rem; margin-bottom: 14px; }

/* ============================================================
   DETAIL
   ============================================================ */
.back-btn {
  background: none; border: none; color: var(--navy); font-weight: 600; font-size: .88rem;
  padding: 0; margin-bottom: 28px; display: inline-flex; align-items: center; gap: 6px;
  cursor: pointer; transition: var(--transition);
}
.back-btn:hover { color: var(--amber); }

.detail-layout { display: grid; grid-template-columns: 1fr 340px; gap: 40px; align-items: start; }

.gallery-main {
  border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 10px;
  background: #e8ecf4; height: 380px;
  display: flex; align-items: center; justify-content: center;
  cursor: zoom-in;
}
.gallery-main .gallery-placeholder { font-size: 5rem; color: #a0aec0; }
.gallery-main img { width: 100%; height: 100%; object-fit: cover; }

.gallery-thumbs { display: flex; gap: 8px; flex-wrap: wrap; }
.gallery-thumb {
  width: 70px; height: 70px; border-radius: var(--radius); overflow: hidden;
  cursor: pointer; border: 2px solid transparent; transition: var(--transition);
  background: #e8ecf4; display: flex; align-items: center; justify-content: center;
}
.gallery-thumb:hover, .gallery-thumb.active { border-color: var(--amber); }
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }

.detail-title  { font-size: 1.45rem; font-weight: 700; color: var(--navy); margin-bottom: 6px; }
.detail-seller { color: var(--text-light); margin-bottom: 14px; font-size: .92rem; }
.detail-price  { font-size: 1.75rem; font-weight: 700; color: var(--amber); margin-bottom: 18px; }

.detail-specs {
  background: var(--white); border-radius: var(--radius-lg);
  padding: 18px; margin-bottom: 18px; box-shadow: var(--shadow);
}
.spec-row { display: flex; justify-content: space-between; align-items: flex-start; padding: 9px 0; border-bottom: 1px solid var(--border); gap: 16px; }
.spec-row:last-child { border-bottom: none; }
.spec-label { font-size: .82rem; color: var(--text-light); font-weight: 500; white-space: nowrap; }
.spec-value { font-size: .88rem; font-weight: 600; color: var(--text); text-align: right; }

.detail-desc { background: var(--bg); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 18px; font-size: .88rem; color: var(--text-light); }
.detail-desc strong { display: block; color: var(--text); margin-bottom: 5px; }

.contact-card { background: var(--navy); color: var(--white); border-radius: var(--radius-lg); padding: 22px; }
.contact-card h3 { margin-bottom: 5px; }
.contact-card p  { color: rgba(255,255,255,.65); font-size: .88rem; margin-bottom: 18px; }
.contact-card .btn { width: 100%; }

/* ============================================================
   SELL — multi-step form
   ============================================================ */
#section-sell .container { max-width: 760px; }
.progress-bar { background: var(--border); border-radius: 4px; height: 4px; margin-bottom: 24px; overflow: hidden; }
.progress-bar__fill { height: 100%; background: var(--amber); border-radius: 4px; transition: width .4s ease; }

.steps-indicator { display: flex; justify-content: space-between; margin-bottom: 40px; position: relative; }
.steps-indicator::before {
  content: ''; position: absolute; top: 13px; left: 14px; right: 14px;
  height: 2px; background: var(--border); z-index: 0;
}
.step-dot { display: flex; flex-direction: column; align-items: center; gap: 7px; position: relative; z-index: 1; }
.step-dot span {
  width: 28px; height: 28px; border-radius: 50%; background: var(--border);
  color: var(--text-light); font-size: .78rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center; transition: var(--transition);
}
.step-dot label { font-size: .72rem; color: var(--text-light); white-space: nowrap; cursor: default; }
.step-dot.active span { background: var(--amber); color: var(--navy-dark); }
.step-dot.done span   { background: var(--navy);  color: var(--white); }
.step-dot.done label,
.step-dot.active label { color: var(--navy); font-weight: 600; }

.form-step { display: none; }
.form-step.active { display: block; animation: fadeIn .18s ease; }
.form-step > h3 { color: var(--navy); margin-bottom: 22px; padding-bottom: 12px; border-bottom: 2px solid var(--border); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-field { margin-bottom: 20px; }
.form-field label { display: block; font-weight: 600; font-size: .85rem; color: var(--text); margin-bottom: 5px; }
.form-field small { display: block; color: var(--text-light); font-size: .78rem; margin-top: 4px; }
.required-star { color: var(--amber); }

input[type="text"],
input[type="number"],
input[type="email"],
textarea {
  width: 100%; padding: 9px 13px;
  border: 1.5px solid var(--border); border-radius: var(--radius);
  font-size: .9rem; color: var(--text); background: var(--white);
  transition: var(--transition);
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(26,47,90,.1);
}
input.invalid, select.invalid, textarea.invalid { border-color: #e53e3e; }
textarea { resize: vertical; min-height: 96px; }

.condition-tips { background: #fffbeb; border: 1px solid #fbd38d; border-radius: var(--radius); padding: 14px; margin-top: 4px; }
.condition-tips h4 { color: #744210; margin-bottom: 8px; }
.condition-tips li { padding: 2px 0; font-size: .85rem; color: #7b4e12; }
.condition-tips li::before { content: "→ "; }

.upload-area {
  border: 2px dashed var(--border); border-radius: var(--radius-lg);
  padding: 28px; text-align: center; cursor: pointer;
  transition: var(--transition); background: var(--bg); margin-bottom: 18px;
}
.upload-area:hover { border-color: var(--amber); background: #fffbeb; }
.upload-area__icon { font-size: 2.2rem; margin-bottom: 10px; }
.upload-area p     { color: var(--text-light); font-size: .88rem; margin-bottom: 10px; }
.upload-area p strong { color: var(--text); }
.upload-preview    { margin-top: 14px; }
.upload-preview img { border-radius: var(--radius); max-height: 150px; margin: 0 auto; }

.photo-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 20px; }
.photo-thumb { position: relative; aspect-ratio: 1; border-radius: var(--radius); overflow: hidden; background: var(--border); }
.photo-thumb img { width: 100%; height: 100%; object-fit: cover; }
.photo-thumb__remove {
  position: absolute; top: 4px; right: 4px;
  background: rgba(0,0,0,.55); color: white; border: none;
  border-radius: 50%; width: 20px; height: 20px; font-size: .65rem;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: var(--transition);
}
.photo-thumb__remove:hover { background: rgba(200,0,0,.7); }

.photo-tips { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; }
.photo-tips h4 { color: var(--navy); margin-bottom: 7px; }
.photo-tips li { padding: 2px 0; font-size: .85rem; color: var(--text-light); }
.photo-tips li::before { content: "• "; color: var(--amber); }

.review-panel {
  background: var(--white); border-radius: var(--radius-lg);
  padding: 20px; box-shadow: var(--shadow); margin-bottom: 20px;
}
.review-photo-strip { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.review-photo-strip img { width: 68px; height: 68px; object-fit: cover; border-radius: var(--radius); }

.submit-note { background: var(--bg); border-radius: var(--radius); padding: 13px 16px; }
.submit-note p { font-size: .85rem; color: var(--text-light); }

.form-nav { display: flex; justify-content: space-between; margin-top: 28px; padding-top: 22px; border-top: 2px solid var(--border); }

.submit-success { text-align: center; padding: 72px 20px; animation: fadeIn .3s ease; }
.success-icon   { font-size: 3.6rem; margin-bottom: 14px; }
.submit-success h3 { color: var(--navy); font-size: 1.55rem; margin-bottom: 10px; }
.submit-success p  { color: var(--text-light); margin-bottom: 28px; }

/* ============================================================
   DASHBOARD
   ============================================================ */
.dashboard__header  { display: flex; justify-content: space-between; align-items: center; margin-bottom: 28px; }
.dashboard__header h2 { color: var(--navy); }
.dashboard__stats   { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 28px; }
.dash-stat { background: var(--white); border-radius: var(--radius-lg); padding: 18px 22px; box-shadow: var(--shadow); }
.dash-stat__num   { font-size: 2rem; font-weight: 700; color: var(--navy); }
.dash-stat__label { font-size: .78rem; color: var(--text-light); text-transform: uppercase; letter-spacing: .05em; margin-top: 2px; }

.dashboard-table-wrap { overflow-x: auto; border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.dashboard-table { width: 100%; border-collapse: collapse; background: var(--white); }
.dashboard-table th {
  background: var(--navy); color: var(--white);
  padding: 13px 16px; font-size: .78rem; text-transform: uppercase;
  letter-spacing: .05em; text-align: left; font-weight: 600;
}
.dashboard-table td { padding: 13px 16px; border-bottom: 1px solid var(--border); font-size: .88rem; vertical-align: middle; }
.dashboard-table tr:last-child td { border-bottom: none; }
.dashboard-table tr:hover td { background: var(--bg); }
.table-actions { display: flex; gap: 6px; }

/* ============================================================
   LIGHTBOX
   ============================================================ */
.lightbox {
  display: none; position: fixed; inset: 0; z-index: 500;
  background: rgba(0,0,0,.92);
  align-items: center; justify-content: center;
  padding: 20px;
}
.lightbox.open { display: flex; }
.lightbox__img-wrap {
  display: flex; align-items: center; justify-content: center;
  max-width: 88vw; max-height: 82vh;
  background: #1a1a1a; border-radius: var(--radius);
  overflow: hidden; font-size: 8rem; color: var(--white);
  min-width: 280px; min-height: 200px;
}
.lightbox__img-wrap img { max-width: 88vw; max-height: 82vh; object-fit: contain; border-radius: var(--radius); }

.lightbox__close {
  position: absolute; top: 18px; right: 22px;
  background: rgba(255,255,255,.1); border: none; color: white;
  font-size: 1.4rem; cursor: pointer; border-radius: 50%;
  width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.lightbox__close:hover { background: rgba(255,255,255,.25); }

.lightbox__prev,
.lightbox__next {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(255,255,255,.1); border: none; color: white;
  font-size: 1.4rem; padding: 14px 18px; cursor: pointer;
  border-radius: var(--radius); transition: var(--transition);
}
.lightbox__prev { left: 14px; }
.lightbox__next { right: 14px; }
.lightbox__prev:hover, .lightbox__next:hover { background: rgba(255,255,255,.25); }
.lightbox__counter {
  position: absolute; bottom: 18px; left: 50%; transform: translateX(-50%);
  color: rgba(255,255,255,.55); font-size: .82rem;
}

/* ============================================================
   TOAST
   ============================================================ */
.toast {
  position: fixed; bottom: 24px; left: 50%;
  transform: translateX(-50%) translateY(120px);
  background: var(--navy-dark); color: white;
  padding: 11px 22px; border-radius: 24px;
  font-size: .88rem; font-weight: 500;
  z-index: 400; transition: transform .3s ease;
  pointer-events: none; white-space: nowrap;
  box-shadow: 0 4px 20px rgba(0,0,0,.3);
}
.toast.show { transform: translateX(-50%) translateY(0); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: var(--navy-dark); padding: 36px 0; }
.footer__inner {
  display: flex; flex-direction: column;
  align-items: center; gap: 8px; text-align: center;
  color: rgba(255,255,255,.5);
}
.footer__copy { font-size: .8rem; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 920px) {
  .nav, .header__actions .btn--outline { display: none; }
  .hamburger { display: flex; }
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { display: none; }
  .steps { grid-template-columns: 1fr; text-align: left; }
  .step__arrow { display: none; }
  .catalogue__layout { grid-template-columns: 1fr; }
  .filters { position: static; }
  .detail-layout { grid-template-columns: 1fr; }
  .dashboard__stats { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .hero__ctas { flex-direction: column; align-items: flex-start; }
  .form-row   { grid-template-columns: 1fr; }
  .engine-families { grid-template-columns: repeat(2, 1fr); }
  .photo-grid { grid-template-columns: repeat(3, 1fr); }
  .steps-indicator label { display: none; }
  .dashboard__stats  { grid-template-columns: 1fr; }
  .dashboard__header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .table-actions { flex-direction: column; }
}