/* ══ DESKSATHI RESPONSIVE SYSTEM ════════════════════════════════════
   Breakpoints:
   • ≤ 900px  — tablet / small laptop
   • ≤ 600px  — mobile
   • ≤ 400px  — small mobile
════════════════════════════════════════════════════════════════════ */

/* ── Hamburger Button ──────────────────────────────────────────────── */
.nav-ham {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px 7px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  flex-shrink: 0;
  margin-left: auto;
  transition: background .15s, border-color .15s;
}
.nav-ham:hover  { background: var(--bg-2); border-color: var(--border-2); }
.nav-ham span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .25s ease, opacity .2s ease;
}
.nav-ham.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-ham.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-ham.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── Mobile Nav Overlay ────────────────────────────────────────────── */
.mob-nav {
  display: none;
  position: fixed;
  inset: 0;
  top: 60px;
  z-index: 98;
  background: rgba(255, 255, 255, .97);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border-top: 1px solid var(--border);
  padding: 24px 20px 32px;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
}
.mob-nav.open { display: flex; }

.mob-nav-links {
  list-style: none;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  flex-shrink: 0;
}
.mob-nav-links li a {
  display: flex;
  align-items: center;
  padding: 15px 18px;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  transition: background .15s, color .15s;
  text-decoration: none;
}
.mob-nav-links li:last-child a { border-bottom: none; }
.mob-nav-links li a:hover,
.mob-nav-links li a.active {
  background: var(--bg-2);
  color: var(--accent);
}

.mob-nav-acts {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex-shrink: 0;
}
.mob-nav-acts a {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 13px 20px;
  border-radius: 10px;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  transition: all .18s;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  gap: 6px;
}
.mob-nav-acts a.mob-btn-dark {
  background: var(--text);
  color: #fff;
  border-color: var(--text);
}
.mob-nav-acts a.mob-btn-dark:hover { background: #222; }
.mob-nav-acts a.mob-btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border-2);
  font-family: var(--mono);
  font-size: 13px;
}
.mob-nav-acts a.mob-btn-outline:hover { background: var(--bg-2); }

/* ── Tablet  ≤ 900px ──────────────────────────────────────────────── */
@media (max-width: 900px) {

  /* Layout */
  .c { padding: 0 24px; }
  .section { padding: 72px 0; }

  /* Nav */
  nav { padding: 0 24px !important; gap: 12px !important; }
  .nav-links { display: none !important; }
  .nav-sp   { display: none !important; }
  .nav-badge { display: none !important; }
  nav > a.btn,
  nav > button.btn { display: none !important; }
  .nav-ham  { display: flex; }

  /* Stats */
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .stat { padding: 36px 24px; }
  .stat-n { font-size: 44px; letter-spacing: -2px; }

  /* Section header */
  .sh { grid-template-columns: 1fr !important; gap: 20px; }
  .sh h2 { letter-spacing: -1.5px; }

  /* Shared grids */
  .grid2, .grid3, .grid4 { grid-template-columns: 1fr !important; }

  /* Footer */
  .fg { grid-template-columns: 1fr 1fr !important; gap: 28px !important; }

  /* Bento (index hero features) */
  .bento { grid-template-columns: 1fr !important; }
  .bento-card.span2 { grid-column: span 1 !important; }

  /* Vertical cards */
  .v-grid { grid-template-columns: repeat(2, 1fr) !important; }

  /* How-it-works */
  .how-grid { grid-template-columns: 1fr !important; }

  /* Pricing */
  .price-grid { grid-template-columns: 1fr !important; max-width: 100% !important; }

  /* Product UI */
  .product-ui-body { grid-template-columns: 1fr !important; }
  .ui-sidebar { display: none !important; }

  /* Hero (index) */
  .hero { padding: 56px 0 0; }
  .hero h1 { letter-spacing: -2px; }
  .hero-sub { font-size: 16px; }

  /* Inline-style grids on vertical pages (hero 2-col, feature grids) */
  .page-hero-2col {
    grid-template-columns: 1fr !important;
    gap: 32px !important;
  }
  .inline-3col {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 14px !important;
  }
  .inline-2col {
    grid-template-columns: 1fr 1fr !important;
  }

  /* About page */
  .about-founder-grid {
    grid-template-columns: 1fr !important;
    gap: 36px !important;
  }

  /* Pricing page */
  .plans-grid {
    grid-template-columns: 1fr !important;
    max-width: 100% !important;
  }

  /* Index writing grid */
  .writing-grid {
    grid-template-columns: 1fr !important;
  }

  /* Dashboard sidebar layout */
  .dash-layout {
    grid-template-columns: 1fr !important;
  }
}

/* ── Mobile  ≤ 600px ──────────────────────────────────────────────── */
@media (max-width: 600px) {

  /* Layout */
  .c { padding: 0 16px; }
  .section { padding: 56px 0; }

  /* Nav */
  nav { padding: 0 16px !important; height: 56px !important; gap: 8px !important; }
  .mob-nav { top: 56px; padding: 20px 16px 28px; }

  /* Stats — keep 2-col but shrink */
  .stats-row { grid-template-columns: 1fr 1fr; }
  .stat { padding: 22px 14px; }
  .stat-n { font-size: 34px; letter-spacing: -1.5px; }
  .stat-n .u { font-size: 18px; }
  .stat-desc { font-size: 12px; max-width: 100%; }

  /* Footer: single column */
  .fg { grid-template-columns: 1fr !important; gap: 24px !important; }
  footer { padding: 48px 0 24px; }

  /* CTA band */
  .cta-band { padding: 60px 0; }
  .cta-band h2 { letter-spacing: -1.5px; }
  .cta-band p { font-size: 15px; }

  /* Section header */
  .sh { margin-bottom: 28px; gap: 14px; }
  .sh h2 { letter-spacing: -1px; }

  /* Bento/card inner padding */
  .bento { gap: 10px !important; }
  .bento-content,
  .b-body { padding: 20px !important; }
  .cell { padding: 20px !important; }
  .card { padding: 20px !important; }

  /* Hero (index) */
  .hero { padding: 44px 0 0; }
  .hero-top { margin-bottom: 32px; }
  .hero h1 { letter-spacing: -1.5px; }
  .hero-sub { font-size: 15px; margin-bottom: 24px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn-lg {
    width: 100%;
    max-width: 340px;
    justify-content: center;
  }
  .hero-visual { padding: 14px 12px !important; }
  .ui-tabs { display: none !important; }
  .ui-main { padding: 16px !important; }

  /* Verticals grid — 2-col on mobile */
  .v-grid { grid-template-columns: 1fr 1fr !important; }
  .v-card { padding: 18px 14px !important; }
  .v-icon { width: 40px; height: 40px; font-size: 22px; margin-bottom: 10px; }
  .v-card h3 { font-size: 13px; }
  .v-card p  { font-size: 11px; }

  /* How-it-works */
  .how-card-top { padding: 20px 20px 16px !important; }
  .how-card-bottom { padding: 12px 20px !important; }
  .how-card h3 { font-size: 16px; }

  /* Plan cards */
  .plan { padding: 24px 20px !important; }
  .plan-price { font-size: 38px; letter-spacing: -2px; }

  /* Inline page hero 2-col → 1-col */
  .page-hero-2col {
    grid-template-columns: 1fr !important;
    gap: 24px !important;
  }

  /* 3-col inline → 1-col on mobile */
  .inline-3col {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }

  /* 2-col inline → 1-col on mobile */
  .inline-2col {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }

  /* About page 2-col → 1-col */
  .about-founder-grid {
    grid-template-columns: 1fr !important;
    gap: 28px !important;
  }

  /* Pricing plans → 1-col */
  .plans-grid {
    grid-template-columns: 1fr !important;
    max-width: 100% !important;
  }

  /* Writing grid → 1-col */
  .writing-grid {
    grid-template-columns: 1fr !important;
    border-left: none !important;
  }
  .writing-grid > a {
    border-left: none !important;
    border-right: none !important;
    border-bottom: 1px solid var(--border) !important;
  }
  .writing-grid > a:last-child { border-bottom: none !important; }

  /* Pricing comparison table — horizontal scroll */
  .table-scroll {
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--r-lg);
    border: 1px solid var(--border);
  }
  .table-scroll > div {
    overflow: visible !important;
    border: none !important;
    border-radius: 0 !important;
    min-width: 520px;
  }

  /* Vertical page hero buttons */
  .page-hero-btns {
    flex-direction: column !important;
    align-items: flex-start;
  }
  .page-hero-btns .btn-lg {
    width: 100%;
    max-width: 340px;
    justify-content: center;
  }
}

/* ── Small Mobile  ≤ 400px ────────────────────────────────────────── */
@media (max-width: 400px) {

  .c { padding: 0 12px; }
  nav { padding: 0 12px !important; }

  /* Single column everything */
  .v-grid { grid-template-columns: 1fr !important; }

  /* Stats: 1-col */
  .stats-row { grid-template-columns: 1fr !important; }
  .stat {
    border-right: none !important;
    border-bottom: 1px solid var(--border) !important;
  }
  .stat:last-child { border-bottom: none !important; }

  /* Hero */
  .hero h1 { font-size: clamp(28px, 9vw, 40px) !important; letter-spacing: -1px; }
  .hero-actions .btn-lg { font-size: 13px; }

  /* Plan */
  .plan { padding: 18px 14px !important; }
  .plan-price { font-size: 34px; }

  /* CTA */
  .cta-band { padding: 48px 0; }

  /* Section */
  .section { padding: 48px 0; }
}