/* ================================================================
   WILDERSTONE — Design System
   ================================================================ */

/* ---- Tokens ---- */
:root {
  --bg:                  #07070F;
  --surface:             #0F0F1A;
  --card:                #13131E;
  --card-hover:          #181826;
  --border:              rgba(255, 255, 255, 0.07);
  --border-hover:        rgba(255, 255, 255, 0.14);
  --text:                #F0F0F8;
  --text-muted:          #7878A0;
  --text-subtle:         #42425C;
  --accent-ws:           #6C63FF;
  --accent-ws-glow:      rgba(108, 99, 255, 0.18);
  --accent-vow:          #FF6B9D;
  --accent-vow-end:      #FFAD76;
  --accent-unspend:      #FF3D8A;
  --accent-unspend-end:  #A855F7;
  --radius-card:         20px;
  --radius-sm:           12px;
  --radius-pill:         9999px;
  --transition:          0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-card:         0 8px 48px rgba(0, 0, 0, 0.45);
  --shadow-glow-ws:      0 0 48px rgba(108, 99, 255, 0.12);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ================================================================
   LAYOUT
   ================================================================ */
.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section-sm {
  padding: 64px 0;
}

/* ================================================================
   TYPOGRAPHY
   ================================================================ */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.eyebrow-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-ws);
  display: inline-block;
}

h1 { font-size: clamp(40px, 6vw, 72px); font-weight: 700; line-height: 1.08; letter-spacing: -0.03em; }
h2 { font-size: clamp(28px, 4vw, 44px); font-weight: 700; line-height: 1.14; letter-spacing: -0.02em; }
h3 { font-size: 20px; font-weight: 600; line-height: 1.3; letter-spacing: -0.01em; }
h4 { font-size: 15px; font-weight: 600; line-height: 1.4; }
p  { font-size: 16px; color: var(--text-muted); line-height: 1.75; }

.text-gradient-ws {
  background: linear-gradient(135deg, #6C63FF, #A78BFA);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-vow {
  background: linear-gradient(135deg, var(--accent-vow), var(--accent-vow-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-unspend {
  background: linear-gradient(135deg, var(--accent-unspend), var(--accent-unspend-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ================================================================
   NAVIGATION
   ================================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 64px;
  display: flex;
  align-items: center;
  transition: background var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(7, 7, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav-logo {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo-mark {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, #6C63FF, #A78BFA);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  transition: color var(--transition), background var(--transition);
}

.nav-link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.nav-link.active {
  color: var(--text);
}

.nav-cta {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-hover);
  padding: 7px 16px;
  border-radius: var(--radius-pill);
  transition: background var(--transition), border-color var(--transition);
  margin-left: 8px;
}

.nav-cta:hover {
  background: rgba(255, 255, 255, 0.13);
  border-color: rgba(255, 255, 255, 0.22);
}

/* Mobile nav */
.nav-mobile-toggle {
  display: none;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  color: var(--text-muted);
  transition: background var(--transition);
}

.nav-mobile-toggle:hover {
  background: rgba(255, 255, 255, 0.06);
}

.nav-mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px 24px;
  flex-direction: column;
  gap: 4px;
  z-index: 99;
}

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

.nav-mobile-menu .nav-link {
  font-size: 16px;
  padding: 10px 14px;
}

/* ================================================================
   HERO
   ================================================================ */
.hero {
  padding-top: 160px;
  padding-bottom: 96px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 50% 0%, rgba(108, 99, 255, 0.08) 0%, transparent 60%),
    radial-gradient(circle, rgba(108, 99, 255, 0.06) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
}

.hero h1 {
  margin-bottom: 24px;
}

.hero p {
  font-size: 18px;
  max-width: 520px;
  margin: 0 auto 40px;
}

/* App-specific hero variants */
.hero-vow {
  padding-top: 160px;
  padding-bottom: 96px;
  position: relative;
  overflow: hidden;
}

.hero-vow .hero-bg-grid {
  background-image:
    radial-gradient(circle at 50% 0%, rgba(255, 107, 157, 0.1) 0%, transparent 55%),
    radial-gradient(circle, rgba(255, 107, 157, 0.05) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px;
}

.hero-unspend {
  padding-top: 160px;
  padding-bottom: 96px;
  position: relative;
  overflow: hidden;
}

.hero-unspend .hero-bg-grid {
  background-image:
    radial-gradient(circle at 50% 0%, rgba(255, 61, 138, 0.1) 0%, transparent 55%),
    radial-gradient(circle, rgba(168, 85, 247, 0.05) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px;
}

/* ================================================================
   STATUS PILLS / BADGES
   ================================================================ */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid;
}

.pill-ws {
  color: var(--accent-ws);
  background: rgba(108, 99, 255, 0.1);
  border-color: rgba(108, 99, 255, 0.25);
}

.pill-vow {
  color: var(--accent-vow);
  background: rgba(255, 107, 157, 0.1);
  border-color: rgba(255, 107, 157, 0.25);
}

.pill-unspend {
  color: var(--accent-unspend);
  background: rgba(255, 61, 138, 0.1);
  border-color: rgba(255, 61, 138, 0.25);
}

.pill-coming-soon {
  background: linear-gradient(135deg, rgba(255, 61, 138, 0.12), rgba(168, 85, 247, 0.12));
  border-color: rgba(168, 85, 247, 0.3);
  color: #C084FC;
}

.pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ================================================================
   BUTTONS
   ================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: #7B72FF;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(108, 99, 255, 0.35);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-hover);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.2);
}

/* App Store Button */
.btn-appstore {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #fff;
  color: #000;
  padding: 12px 24px;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
}

.btn-appstore:hover {
  background: #F0F0F0;
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.25);
}

.btn-appstore-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.btn-appstore-sub {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.03em;
  line-height: 1;
  opacity: 0.7;
}

.btn-appstore-main {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.2;
}

.btn-appstore-icon {
  width: 20px;
  height: 24px;
  flex-shrink: 0;
}

/* ================================================================
   APP CARDS (Homepage)
   ================================================================ */
.app-cards-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 56px;
}

.app-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: all var(--transition);
  display: block;
  position: relative;
}

.app-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.app-card-header {
  height: 8px;
}

.app-card-header-vow {
  background: linear-gradient(90deg, var(--accent-vow), var(--accent-vow-end));
}

.app-card-header-unspend {
  background: linear-gradient(90deg, var(--accent-unspend), var(--accent-unspend-end));
}

.app-card-body {
  padding: 36px 36px 32px;
}

.app-card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
}

.app-card-icon-vow {
  background: linear-gradient(135deg, rgba(255, 107, 157, 0.15), rgba(255, 173, 118, 0.15));
  border: 1px solid rgba(255, 107, 157, 0.2);
}

.app-card-icon-unspend {
  background: linear-gradient(135deg, rgba(255, 61, 138, 0.15), rgba(168, 85, 247, 0.15));
  border: 1px solid rgba(255, 61, 138, 0.2);
}

.app-card h3 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 10px;
}

.app-card-tagline {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 28px;
}

.app-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
}

.app-card-arrow {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 14px;
  transition: all var(--transition);
}

.app-card:hover .app-card-arrow {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-hover);
  color: var(--text);
}

/* ================================================================
   SECTION HEADER
   ================================================================ */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  max-width: 520px;
  margin: 0 auto;
  font-size: 17px;
}

/* ================================================================
   FEATURES GRID
   ================================================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  transition: all var(--transition);
}

.feature-card:hover {
  border-color: var(--border-hover);
  background: var(--card-hover);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
}

.feature-card h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.feature-card p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-muted);
}

/* ================================================================
   CATEGORY PILLS (UnSpend)
   ================================================================ */
.categories-scroll {
  overflow-x: auto;
  padding-bottom: 8px;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.categories-scroll::-webkit-scrollbar { display: none; }

.categories-track {
  display: flex;
  gap: 8px;
  width: max-content;
}

.category-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: var(--card);
  border: 1px solid var(--border);
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  transition: all var(--transition);
}

.category-pill:hover {
  border-color: var(--border-hover);
  background: var(--card-hover);
}

.category-emoji {
  font-size: 16px;
}

/* ================================================================
   INSIGHTS CARDS (UnSpend)
   ================================================================ */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 48px;
}

.insight-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px 24px;
}

.insight-card-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-subtle);
  margin-bottom: 16px;
}

.insight-card-value {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 4px;
  color: var(--text);
}

.insight-card-sub {
  font-size: 13px;
  color: var(--text-muted);
}

.insight-bar-wrap {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.insight-bar-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
}

.insight-bar-label {
  width: 80px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.insight-bar-track {
  flex: 1;
  height: 4px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 2px;
  overflow: hidden;
}

.insight-bar-fill {
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent-unspend), var(--accent-unspend-end));
}

/* ================================================================
   CTA BAND
   ================================================================ */
.cta-band {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 80px 0;
  text-align: center;
}

.cta-band h2 {
  margin-bottom: 16px;
}

.cta-band p {
  margin-bottom: 36px;
  font-size: 17px;
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* ================================================================
   DIVIDER
   ================================================================ */
.divider {
  border: none;
  border-top: 1px solid var(--border);
}

/* ================================================================
   FOOTER
   ================================================================ */
.footer {
  padding: 48px 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-brand {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-copy {
  font-size: 13px;
  color: var(--text-subtle);
  margin-top: 4px;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.footer-link {
  font-size: 13px;
  color: var(--text-muted);
  padding: 4px 10px;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}

.footer-link:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.footer-sep {
  color: var(--text-subtle);
  font-size: 12px;
}

/* ================================================================
   BREADCRUMB
   ================================================================ */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--text-muted);
  transition: color var(--transition);
}

.breadcrumb a:hover { color: var(--text); }

.breadcrumb-sep { color: var(--text-subtle); }

.breadcrumb-current { color: var(--text); }

/* ================================================================
   PRIVACY POLICY DOCUMENT
   ================================================================ */
.doc-page {
  padding-top: 120px;
  padding-bottom: 96px;
}

.doc-container {
  max-width: 740px;
  margin: 0 auto;
  padding: 0 24px;
}

.doc-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 8px;
}

.doc-meta {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 56px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.doc-body h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-top: 48px;
  margin-bottom: 16px;
  color: var(--text);
}

.doc-body h3 {
  font-size: 16px;
  font-weight: 600;
  margin-top: 28px;
  margin-bottom: 10px;
  color: var(--text);
}

.doc-body p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.doc-body ul, .doc-body ol {
  padding-left: 20px;
  margin-bottom: 16px;
}

.doc-body ul { list-style: disc; }
.doc-body ol { list-style: decimal; }

.doc-body li {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.doc-body strong {
  color: var(--text);
  font-weight: 600;
}

.doc-body a {
  color: var(--accent-ws);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.doc-body a:hover { opacity: 0.8; }

.doc-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}

.doc-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
}

.doc-body th {
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}

.doc-body td {
  padding: 10px 14px;
  color: var(--text-muted);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  vertical-align: top;
}

.doc-body tr:last-child td { border-bottom: none; }

/* ================================================================
   CONTACT PAGE
   ================================================================ */
.contact-hero {
  padding-top: 160px;
  padding-bottom: 64px;
  position: relative;
  overflow: hidden;
}

.contact-hero .hero-bg-grid {
  background-image:
    radial-gradient(circle at 50% 0%, rgba(108, 99, 255, 0.07) 0%, transparent 60%),
    radial-gradient(circle, rgba(108, 99, 255, 0.05) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px;
}

.contact-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 40px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  transition: all var(--transition);
  max-width: 640px;
  margin: 0 auto;
}

.contact-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
}

.contact-email-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-subtle);
  margin-bottom: 6px;
}

.contact-email-address {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.contact-email-sub {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.contact-arrow {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent-ws);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition);
  color: #fff;
  font-size: 16px;
}

.contact-card:hover .contact-arrow {
  transform: scale(1.08);
  box-shadow: 0 0 24px rgba(108, 99, 255, 0.4);
}

.contact-links-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 40px;
}

.contact-link-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all var(--transition);
  min-width: 200px;
}

.contact-link-card:hover {
  border-color: var(--border-hover);
  background: var(--card-hover);
}

.contact-link-card-icon {
  font-size: 20px;
}

.contact-link-card-text {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
}

.contact-link-card-sub {
  font-size: 12px;
  color: var(--text-muted);
}

/* ================================================================
   SCROLL ANIMATIONS
   ================================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up-delay-1 { transition-delay: 0.08s; }
.fade-up-delay-2 { transition-delay: 0.16s; }
.fade-up-delay-3 { transition-delay: 0.24s; }
.fade-up-delay-4 { transition-delay: 0.32s; }
.fade-up-delay-5 { transition-delay: 0.40s; }
.fade-up-delay-6 { transition-delay: 0.48s; }

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 900px) {
  .app-cards-grid {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 640px) {
  h1 { letter-spacing: -0.025em; }
  h2 { letter-spacing: -0.015em; }

  .section { padding: 72px 0; }
  .section-sm { padding: 48px 0; }
  .hero { padding-top: 120px; padding-bottom: 72px; }
  .hero-vow, .hero-unspend { padding-top: 120px; padding-bottom: 72px; }

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

  .app-card-body {
    padding: 28px 24px 24px;
  }

  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-mobile-toggle { display: flex; }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .contact-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 28px 24px;
  }

  .contact-email-address {
    font-size: 18px;
  }

  .doc-body h2 { font-size: 20px; }
}

@media (max-width: 400px) {
  .container { padding: 0 16px; }
  .app-card-body { padding: 24px 20px 20px; }
}