/* ============================================================
   RMS — Rent Management System — Landing Page Stylesheet
   Dark-only, premium, editorial. Inspired by Linear / Vercel.
   Font: DM Sans (display) + DM Mono (accents)
   ============================================================ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Palette */
  --bg-base:        #0d0f11;
  --bg-surface:     #111316;
  --bg-raised:      #181b1f;
  --bg-elevated:    #1e2228;
  --bg-border:      #272c33;
  --bg-border-sub:  #1c2026;

  --text-primary:   #f0f2f5;
  --text-secondary: #8a9099;
  --text-tertiary:  #545a63;
  --text-accent:    #7eb8f7;

  --accent:         #4a9eff;
  --accent-dim:     #1a3a5c;
  --accent-glow:    rgba(74, 158, 255, 0.12);

  --green:          #3ecf8e;
  --green-dim:      rgba(62, 207, 142, 0.12);
  --amber:          #f5a623;
  --amber-dim:      rgba(245, 166, 35, 0.1);

  /* Type */
  --font-body:  'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:  'DM Mono', 'SF Mono', 'Fira Code', monospace;

  /* Spacing */
  --space-xs:   0.5rem;
  --space-sm:   1rem;
  --space-md:   1.5rem;
  --space-lg:   2.5rem;
  --space-xl:   4rem;
  --space-2xl:  6rem;
  --space-3xl:  9rem;

  /* Radius */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-2xl: 36px;
  --radius-pill: 999px;

  /* Phone dimensions (1:2.22 aspect) */
  --phone-w:    220px;
  --phone-h:    489px;
  --phone-lg-w: 240px;
  --phone-lg-h: 533px;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---- UTILITY ---- */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 3rem);
}

a { color: inherit; text-decoration: none; }

img {
  max-width: 100%;
  display: block;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
}

.nav.scrolled {
  background: rgba(13, 15, 17, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-color: var(--bg-border);
}

.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 5vw, 3rem);
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  flex-shrink: 0;
}

.nav-logo-icon {
  width: 30px;
  height: 30px;
  background: var(--accent-dim);
  border: 1px solid rgba(74, 158, 255, 0.25);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.nav-logo-text {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
}

.nav-link {
  font-size: 14px;
  color: var(--text-secondary);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-raised);
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  font-weight: 500;
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  white-space: nowrap;
}

.nav-btn-ghost {
  color: var(--text-secondary);
  border: 1px solid var(--bg-border);
  background: transparent;
}

.nav-btn-ghost:hover {
  color: var(--text-primary);
  background: var(--bg-raised);
  border-color: var(--bg-elevated);
}

.nav-btn-primary {
  background: var(--accent);
  color: #fff;
  border: 1px solid transparent;
}

.nav-btn-primary:hover {
  background: #62aeff;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
}

.nav-hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all 0.25s;
}

.nav-hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.nav-mobile-menu {
  display: none;
  flex-direction: column;
  padding: 0.75rem clamp(1.25rem, 5vw, 3rem) 1rem;
  background: rgba(13, 15, 17, 0.97);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--bg-border);
}

.nav-mobile-menu.open {
  display: flex;
}

.mobile-link {
  padding: 0.7rem 0;
  font-size: 15px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--bg-border-sub);
  transition: color 0.2s;
}

.mobile-link:hover { color: var(--text-primary); }
.mobile-link:last-child { border-bottom: none; }
.mobile-link-accent { color: var(--accent) !important; font-weight: 500; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  padding-top: clamp(8rem, 14vw, 11rem);
  padding-bottom: clamp(4rem, 8vw, 7rem);
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
  pointer-events: none;
}

.hero-bg-fade {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 65% 55% at 50% -10%, rgba(74, 158, 255, 0.07) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}

.hero-content {
  max-width: 580px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-accent);
  background: var(--accent-dim);
  border: 1px solid rgba(74, 158, 255, 0.2);
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 1.75rem;
  letter-spacing: 0.02em;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--green-dim);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(62, 207, 142, 0.12); }
  50%       { box-shadow: 0 0 0 5px rgba(62, 207, 142, 0.06); }
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 1.4rem;
}

.hero-title-muted {
  color: var(--text-tertiary);
}

.hero-desc {
  font-size: clamp(1rem, 1.5vw, 1.1rem);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.75rem;
  max-width: 500px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 2rem;
}

.tag {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-tertiary);
  background: var(--bg-surface);
  border: 1px solid var(--bg-border);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.01em;
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14.5px;
  font-weight: 500;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  transition: all 0.18s ease;
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-lg {
  font-size: 15px;
  padding: 0.8rem 1.5rem;
}

.btn-primary {
  background: var(--accent);
  color: #ffffff;
}

.btn-primary:hover {
  background: #62aeff;
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--bg-border);
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: var(--bg-raised);
  transform: translateY(-1px);
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12.5px;
  color: var(--text-tertiary);
}

.meta-item svg { color: var(--green); }
.meta-sep { color: var(--text-tertiary); }

/* ---- PHONE MOCKUPS ---- */
.hero-phones {
  position: relative;
  width: calc(var(--phone-w) * 2 - 60px);
  height: var(--phone-h);
  flex-shrink: 0;
}

.phone-wrap {
  position: absolute;
}

.phone-wrap-back {
  top: 30px;
  left: 0;
  z-index: 1;
  opacity: 0.65;
  transform: rotate(-4deg) translateY(10px);
  filter: brightness(0.75);
}

.phone-wrap-front {
  top: 0;
  right: 0;
  z-index: 2;
  transform: rotate(2deg);
}

.phone-frame {
  width: var(--phone-w);
  height: var(--phone-h);
  background: #1a1d22;
  border-radius: 36px;
  border: 1.5px solid var(--bg-border);
  padding: 10px 8px;
  box-shadow:
    0 40px 80px rgba(0,0,0,0.6),
    0 0 0 1px rgba(255,255,255,0.04) inset;
  position: relative;
  overflow: hidden;
}

.phone-frame::before {
  content: '';
  position: absolute;
  top: 10px; left: 50%;
  transform: translateX(-50%);
  width: 60px; height: 4px;
  background: var(--bg-border);
  border-radius: var(--radius-pill);
  z-index: 10;
}

.phone-frame.phone-large {
  width: var(--phone-lg-w);
  height: var(--phone-lg-h);
  border-radius: 40px;
}

.phone-screen {
  width: 100%;
  height: 100%;
  background: var(--bg-surface);
  border-radius: 28px;
  overflow: hidden;
  position: relative;
}

.phone-frame.phone-large .phone-screen {
  border-radius: 32px;
}

.phone-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

/* Placeholder shown when image is missing */
.phone-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--text-tertiary);
  font-size: 11.5px;
  font-family: var(--font-mono);
  background: var(--bg-surface);
  opacity: 1;
  transition: opacity 0.3s;
  pointer-events: none;
  text-align: center;
  padding: 1rem;
}

/* Hide placeholder once image loads */
.phone-img:not([src=""]):not([src="undefined"]) + .phone-placeholder,
.phone-img.loaded + .phone-placeholder {
  opacity: 0;
}

/* ============================================================
   STATS STRIP
   ============================================================ */
.stats-strip {
  border-top: 1px solid var(--bg-border);
  border-bottom: 1px solid var(--bg-border);
  background: var(--bg-surface);
}

.stats-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
  padding: 2rem 0;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 0 clamp(1.5rem, 4vw, 3.5rem);
  text-align: center;
}

.stat-num {
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 12px;
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--bg-border);
  flex-shrink: 0;
}

/* ============================================================
   SECTION COMMON
   ============================================================ */
.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.section-header {
  text-align: center;
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.2;
  color: var(--text-primary);
}

/* ============================================================
   WALKTHROUGH
   ============================================================ */
.walkthrough {
  padding: clamp(4rem, 8vw, 8rem) 0;
}

.walk-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: center;
  margin-bottom: clamp(5rem, 10vw, 9rem);
}

.walk-row:last-child {
  margin-bottom: 0;
}

.walk-row-reverse {
  grid-template-columns: 1fr auto;
}

.walk-row-reverse .walk-phone {
  order: 2;
}

.walk-row-reverse .walk-content {
  order: 1;
}

.walk-phone {
  display: flex;
  justify-content: center;
}

.walk-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-tertiary);
  margin-bottom: 0.6rem;
}

.walk-title {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 0.9rem;
  line-height: 1.25;
}

.walk-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  max-width: 440px;
}

.walk-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.walk-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.walk-icon {
  width: 20px;
  height: 20px;
  background: var(--green-dim);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green);
  flex-shrink: 0;
  margin-top: 1px;
}

/* ============================================================
   WHATSAPP HIGHLIGHT
   ============================================================ */
.whatsapp-section {
  padding: clamp(2rem, 5vw, 4rem) 0;
}

.whatsapp-card {
  background: var(--bg-surface);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.whatsapp-content {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  flex: 1;
  min-width: 260px;
}

.whatsapp-icon-wrap {
  width: 44px;
  height: 44px;
  background: rgba(37, 211, 102, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #25d366;
  flex-shrink: 0;
}

.whatsapp-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
  letter-spacing: -0.01em;
}

.whatsapp-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 420px;
}

.whatsapp-types {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  align-items: center;
}

.wtype {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  color: var(--text-secondary);
  background: var(--bg-raised);
  border: 1px solid var(--bg-border);
  padding: 5px 10px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.wtype-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.wtype-dot-rent    { background: var(--accent); }
.wtype-dot-elec    { background: var(--amber); }
.wtype-dot-both    { background: var(--green); }
.wtype-dot-confirm { background: #25d366; }

/* ============================================================
   FEATURES GRID
   ============================================================ */
.features {
  padding: clamp(4rem, 8vw, 8rem) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--bg-border);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.feature-card {
  background: var(--bg-surface);
  padding: clamp(1.25rem, 2.5vw, 2rem);
  transition: background 0.2s;
  position: relative;
}

.feature-card:hover {
  background: var(--bg-raised);
}

.feature-card-accent {
  background: var(--bg-surface);
}

.feature-card-accent:hover {
  background: rgba(74, 158, 255, 0.05);
}

.feature-icon {
  width: 38px;
  height: 38px;
  background: var(--bg-elevated);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.feature-icon-accent {
  background: var(--accent-dim);
  border-color: rgba(74, 158, 255, 0.2);
  color: var(--accent);
}

.feature-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.feature-desc {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.feature-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
  margin-top: 1rem;
  transition: gap 0.2s;
}

.feature-link:hover { gap: 8px; }

/* ============================================================
   TECH STACK
   ============================================================ */
.tech-section {
  padding: clamp(2rem, 5vw, 4rem) 0;
}

.tech-card {
  background: var(--bg-surface);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-xl);
  padding: clamp(1.75rem, 4vw, 3rem);
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  align-items: start;
}

.tech-header {}
.tech-title {
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-top: 0.5rem;
  line-height: 1.3;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--bg-border);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.tech-item {
  background: var(--bg-elevated);
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: background 0.2s;
}

.tech-item:hover {
  background: var(--bg-raised);
}

.tech-name {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.tech-role {
  font-size: 12px;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}

/* ============================================================
   CTA
   ============================================================ */
.cta-section {
  padding: clamp(4rem, 8vw, 8rem) 0;
}

.cta-inner {
  position: relative;
  text-align: center;
  padding: clamp(3rem, 6vw, 5rem) 2rem;
  background: var(--bg-surface);
  border: 1px solid var(--bg-border);
  border-radius: var(--radius-2xl);
  overflow: hidden;
}

.cta-bg-accent {
  position: absolute;
  top: 0; left: 50%; transform: translateX(-50%);
  width: 600px; height: 200px;
  background: radial-gradient(ellipse at top, rgba(74, 158, 255, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.cta-title {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 0.9rem;
  position: relative;
}

.cta-desc {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  position: relative;
}

.cta-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
  position: relative;
}

.cta-note {
  font-size: 12.5px;
  color: var(--text-tertiary);
  position: relative;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  border-top: 1px solid var(--bg-border);
  background: var(--bg-surface);
  padding: clamp(2.5rem, 5vw, 4rem) 0 2rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.footer-tagline {
  font-size: 13.5px;
  color: var(--text-tertiary);
  margin-top: 0.75rem;
  margin-bottom: 0.5rem;
  line-height: 1.6;
  max-width: 280px;
}

.footer-credit {
  font-size: 12.5px;
  color: var(--text-tertiary);
}

.footer-link {
  color: var(--text-secondary);
  transition: color 0.2s;
}

.footer-link:hover { color: var(--text-primary); }

.footer-col-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-tertiary);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  margin-bottom: 0.9rem;
  font-family: var(--font-mono);
}

.footer-links-col {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links-col .footer-link {
  font-size: 14px;
}

.footer-bottom {
  border-top: 1px solid var(--bg-border-sub);
  padding-top: 1.5rem;
}

.footer-copy {
  font-size: 12.5px;
  color: var(--text-tertiary);
}

/* ============================================================
   SCROLL REVEAL ANIMATIONS
   ============================================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.55s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-reveal][data-reveal-delay="200"] { transition-delay: 0.2s; }
[data-reveal][data-reveal-delay="400"] { transition-delay: 0.4s; }

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   RESPONSIVE — TABLET
   ============================================================ */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-phones {
    margin: 0 auto;
    order: -1;
    width: calc(var(--phone-w) * 2 - 80px);
    height: calc(var(--phone-h) * 0.85);
  }

  .hero-phone-wrap-back { top: 20px; }

  .hero-tags { justify-content: center; }
  .hero-actions { justify-content: center; }
  .hero-meta { justify-content: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .walk-row,
  .walk-row-reverse {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .walk-row-reverse .walk-phone { order: 0; }
  .walk-row-reverse .walk-content { order: 0; }

  .walk-phone { order: -1; }
  .walk-list { text-align: left; }
  .walk-desc { margin-left: auto; margin-right: auto; }

  .tech-card {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .tech-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

/* ============================================================
   RESPONSIVE — MOBILE
   ============================================================ */
@media (max-width: 600px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  .hero-phones {
    --phone-w: 170px;
    --phone-h: 378px;
    width: calc(var(--phone-w) * 2 - 60px);
    height: var(--phone-h);
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .stats-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    padding: 1.75rem 0;
  }

  .stat-divider { display: none; }
  .stat-item { padding: 0; }

  .tech-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .whatsapp-card {
    flex-direction: column;
  }
}

/* ============================================================
   IMAGE LOADING STATE
   ============================================================ */
.phone-img {
  transition: opacity 0.3s;
}

.phone-img.loading {
  opacity: 0;
}