/* ============================================================
   NETODIN — index.css
   Page-specific styles for index.html
   Requires: style.css
   ============================================================ */

/* ── Variables ── */
:root {
  --surface:   #0e0e0e;
  --surface2:  #131313;
  --border2:   #252525;
  --radius:    6px;
}

/* ── Nav additions ── */
.nav {
  backdrop-filter: blur(8px);
  background: rgba(8, 8, 8, 0.95);
}

.nav__links a {
  border-radius: var(--radius);
  padding: 6px 10px;
  transition: all 0.15s;
}

.nav__links a:hover {
  color: #fff;
  background: var(--surface2);
}

.nav__right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn--nav-ghost {
  display: inline-block;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-mid);
  padding: 7px 16px;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: var(--radius);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: all 0.15s;
}

.btn--nav-ghost:hover {
  color: #fff;
  border-color: #444;
}

.btn--nav {
  border-radius: var(--radius);
}

/* ── Hero ── */
.hero-index {
  padding: 80px 0 72px;
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 80px;
  align-items: center;
}

.hero-index__h1 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 12px;
  color: var(--text-muted);
}

.hero-index__sub {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.85;
  margin-bottom: 8px;
}

.hero-index__intro {
  font-size: 0.875rem;
  color: var(--text-dim);
  line-height: 1.85;
  margin-bottom: 36px;
}

/* ── Hero product stack ── */
.hero-stack {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hero-prod {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  transition: all 0.15s;
}

.hero-prod:hover {
  background: var(--surface2);
  border-color: var(--border2);
}

.hp-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hp-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.hero-prod--ops .hp-dot { background: var(--accent-ops); }
.hero-prod--crm .hp-dot { background: var(--accent-crm); }
.hero-prod--ana .hp-dot { background: var(--accent-ana); }
.hero-prod--big .hp-dot { background: var(--accent-big); }

.hp-name {
  font-size: 0.9rem;
  font-weight: 600;
}

.hp-tech {
  font-size: 0.72rem;
  color: var(--text-dim);
  margin-top: 2px;
}

.hp-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hp-price {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text-muted);
}

.hp-arrow {
  font-size: 0.9rem;
  color: var(--text-dim);
}

/* ── Section labels and titles ── */
.sec-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.sec-title {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.sec-sub {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 520px;
  margin-bottom: 0;
}

/* ── Problem section ── */
.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  margin-top: 36px;
  background: var(--border);
}

.prob-card {
  background: var(--surface);
  padding: 28px 32px;
}

.prob-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.prob-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.85;
}

.prob-card--highlight {
  background: var(--surface2);
}

.prob-card--highlight p {
  color: #bbb;
}

/* ── Features grid ── */
.feat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  margin-top: 36px;
  background: var(--border);
}

.feat-card {
  background: var(--bg-card);
  padding: 28px 28px 32px;
}

.feat-icon {
  font-size: 1.2rem;
  margin-bottom: 14px;
}

.feat-title {
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.feat-body {
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.8;
}

/* ── Product tabs ── */
.tabs-wrap {
  margin-top: 36px;
}

.tabs-nav {
  display: flex;
  gap: 2px;
  margin-bottom: 2px;
}

.tab-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  border-bottom: none;
  padding: 10px 22px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  border-radius: var(--radius) var(--radius) 0 0;
  cursor: pointer;
  transition: all 0.15s;
  font-family: 'Inter', sans-serif;
}

.tab-btn:hover {
  color: #fff;
}

.tab-btn--active {
  background: var(--surface2);
  color: #fff;
  border-color: var(--border2);
}

.tab-panel {
  display: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0 var(--radius) var(--radius) var(--radius);
  padding: 40px;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.tab-panel--active {
  display: grid;
}

.tab-name {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 6px;
}

.tab-tech {
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}

.tab-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.85;
  margin-bottom: 22px;
}

.tab-price {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 4px;
}

.tab-price__unit {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-dim);
}

.tab-price--ops { color: var(--accent-ops); }
.tab-price--crm { color: var(--accent-crm); }
.tab-price--ana { color: var(--accent-ana); }
.tab-price--big { color: var(--accent-big); }

.tab-price-note {
  font-size: 0.72rem;
  color: var(--text-dim);
  margin-bottom: 24px;
}

.tab-feats {
  display: flex;
  flex-direction: column;
  gap: 9px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.tab-feat {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.tab-feat::before {
  content: "✓";
  color: var(--accent-ana);
  font-size: 0.72rem;
  flex-shrink: 0;
}

.tab-cta {
  display: inline-block;
  margin-top: 24px;
  background: #fff;
  color: #080808;
  padding: 10px 22px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: var(--radius);
  transition: background 0.15s;
}

.tab-cta:hover {
  background: #e5e5e5;
}

.tab-use-title {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.tab-use-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.tab-use-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 12px 14px;
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.tab-use-item strong {
  color: #bbb;
  display: block;
  font-size: 0.8rem;
  margin-bottom: 2px;
}

/* ── Steps ── */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  margin-top: 36px;
  background: var(--border);
}

.step {
  background: var(--bg-card);
  padding: 32px 28px;
  position: relative;
  overflow: hidden;
}

.step::before {
  content: attr(data-n);
  position: absolute;
  top: 18px;
  right: 22px;
  font-size: 3.5rem;
  font-weight: 800;
  color: #1a1a1a;
  letter-spacing: -0.04em;
  line-height: 1;
}

.step-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
  position: relative;
}

.step-body {
  font-size: 0.85rem;
  color: var(--text-dim);
  line-height: 1.85;
  position: relative;
}

/* ── Comparison table ── */
.cmp-wrap {
  overflow-x: auto;
  margin-top: 36px;
}

.cmp-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.cmp-table th {
  padding: 13px 18px;
  text-align: left;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.cmp-th--hl {
  color: #fff;
  background: #111;
}

.cmp-th__sub {
  font-weight: 400;
  font-size: 0.68rem;
}

.cmp-table td {
  padding: 12px 18px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  vertical-align: middle;
}

.cmp-td--hl {
  background: #0d0d0d;
  color: #fff;
  font-weight: 600;
}

.cmp-row-label {
  color: #bbb;
  font-weight: 500;
}

.cmp-yes { color: var(--accent-ana); }
.cmp-no  { color: #3a3a3a; }

/* ── Who it's for ── */
.who-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  margin-top: 36px;
  background: var(--border);
}

.who-card {
  background: var(--bg-card);
  padding: 28px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.who-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.who-title {
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.who-body {
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.8;
}

/* ── CTA strip ── */
.cta-strip {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 52px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
}

.cta-strip__left h2 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.cta-strip__left p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 420px;
}

.cta-strip__actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

/* ── Responsive ── */
@media (max-width: 860px) {
  .hero-index           { grid-template-columns: 1fr; gap: 40px; padding: 56px 0 48px; }
  .problem-grid         { grid-template-columns: 1fr; }
  .feat-grid            { grid-template-columns: 1fr 1fr; }
  .tabs-nav             { flex-wrap: wrap; }
  .tab-panel--active    { grid-template-columns: 1fr; }
  .steps                { grid-template-columns: 1fr; }
  .who-grid             { grid-template-columns: 1fr; }
  .cta-strip            { flex-direction: column; gap: 24px; padding: 32px 28px; }
}

@media (max-width: 520px) {
  .feat-grid     { grid-template-columns: 1fr; }
  .tab-use-grid  { grid-template-columns: 1fr; }
}