/* ============================================================
   ads.expert: Stylesheet (Light Mode)
   Brand: #0A0A0A · #FFFFFF · Blue gradient #1E63CC → #42C8D2
   Font: Poppins
   ============================================================ */

/* ===== CUSTOM PROPERTIES ===== */
:root {
  /* Backgrounds */
  --bg:           #FFFFFF;
  --bg-subtle:    #F4F6FB;
  --bg-dark:      #0A0A0A;
  --bg-dark-card: #141414;
  --bg-dark-raised: #1C1C1C;

  /* Text */
  --text-primary:   #0A0A0A;
  --text-secondary: #555566;
  --text-muted:     #8F8FA0;
  --text-on-dark:   #FFFFFF;
  --text-on-dark-70: rgba(255,255,255,0.70);
  --text-on-dark-45: rgba(255,255,255,0.45);

  /* Borders */
  --border:       rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 0, 0, 0.16);
  --border-dark:  rgba(255, 255, 255, 0.08);

  /* Brand */
  --blue-deep:  #1E63CC;
  --blue-light: #42C8D2;
  --gradient:   linear-gradient(135deg, #1E63CC 0%, #42C8D2 100%);

  /* Shadows */
  --shadow-sm:  0 1px 4px rgba(0,0,0,0.07), 0 2px 12px rgba(0,0,0,0.05);
  --shadow-md:  0 4px 20px rgba(0,0,0,0.09), 0 1px 4px rgba(0,0,0,0.05);
  --shadow-lg:  0 8px 40px rgba(0,0,0,0.12);
  --shadow-blue: 0 4px 24px rgba(30,99,204,0.28);

  /* Layout */
  --font:       'Poppins', sans-serif;
  --nav-h:      72px;
  --pad-section: 96px;
  --container:   1200px;
  --pad-x:       24px;

  /* Radii */
  --r-sm:   8px;
  --r-md:   14px;
  --r-lg:   22px;
  --r-full: 100px;

  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --t: 0.22s;
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button { font-family: var(--font); }

/* ===== TYPOGRAPHY ===== */
h1 {
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--text-primary);
}
h2 {
  font-size: clamp(26px, 3.5vw, 44px);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
h3 {
  font-size: clamp(17px, 1.8vw, 20px);
  font-weight: 600;
  line-height: 1.3;
}
p { color: var(--text-secondary); line-height: 1.75; }

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== SHARED UTILITIES ===== */
.section-label {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-deep);
  margin-bottom: 14px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(30, 99, 204, 0.07);
  border: 1px solid rgba(30, 99, 204, 0.16);
  border-radius: var(--r-full);
  padding: 6px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--blue-deep);
  margin-bottom: 28px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--r-full);
  font-family: var(--font);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease);
  border: none;
  white-space: nowrap;
}

.btn--primary {
  background: var(--gradient);
  color: #fff;
  padding: 14px 28px;
  box-shadow: var(--shadow-blue);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 36px rgba(30,99,204,0.38);
}
.btn--primary:active { transform: translateY(0); }

.btn--large {
  padding: 17px 38px;
  font-size: 16px;
}

.btn--nav {
  background: transparent;
  color: var(--text-primary);
  padding: 9px 22px;
  font-size: 14px;
  border: 1px solid var(--border);
}
.btn--nav:not(.btn--nav-ghost) {
  background: var(--gradient);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 20px rgba(30,99,204,0.28);
}
.btn--nav:not(.btn--nav-ghost):hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(30,99,204,0.38);
  background: var(--gradient);
  border-color: transparent;
}
.btn--nav.btn--nav-ghost:hover {
  background: transparent;
  border-color: transparent;
}
.btn--nav-ghost {
  border-color: transparent;
  color: var(--text-secondary);
  font-weight: 500;
}
.btn--nav-ghost:hover {
  color: var(--text-primary);
}

/* ===== NAVIGATION ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 999;
  height: var(--nav-h);
  background: rgba(255,255,255,0.80);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
  transition: background var(--t), box-shadow var(--t);
}
.nav--scrolled {
  background: rgba(255,255,255,0.97);
  box-shadow: var(--shadow-sm);
}

.nav__container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 11px;
}
.nav__logo-mark { width: 34px; height: 34px; flex-shrink: 0; }
.nav__logo-text {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--t) var(--ease);
}
.nav__hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--nav-h) + 60px);
  padding-bottom: 80px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, #FFFFFF 55%, #EEF4FF 100%);
}

/* Subtle ambient blobs */
.hero::before {
  content: '';
  position: absolute;
  top: -10%;
  right: -8%;
  width: 640px;
  height: 640px;
  background: radial-gradient(circle, rgba(30,99,204,0.08) 0%, transparent 65%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 5%;
  left: -8%;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(66,200,210,0.07) 0%, transparent 70%);
  pointer-events: none;
}

.hero__container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
  width: 100%;
  position: relative;
  z-index: 1;
}

.hero__content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero__headline { margin-bottom: 22px; }

.hero__sub {
  font-size: 17px;
  line-height: 1.72;
  margin-bottom: 36px;
  max-width: 500px;
  color: var(--text-secondary);
}

.hero__trust { display: flex; flex-direction: column; gap: 11px; }
.hero__trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}
.hero__trust-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gradient);
  flex-shrink: 0;
}

/* ===== FORM CARD ===== */
.hero__form-wrap { position: relative; }

.form-card {
  background: #FFFFFF;
  border-radius: var(--r-lg);
  padding: 38px 36px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(30,99,204,0.04);
}

.form-card__eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue-deep);
  margin-bottom: 8px;
}
.form-card__title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.25;
  letter-spacing: -0.02em;
}
.form-card__sub {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 24px;
  line-height: 1.6;
}

/* HubSpot form overrides */
.hs-form-frame { width: 100%; }
.hs-form-frame .hs-button,
.form-card .hs-button {
  background: linear-gradient(135deg, #1E63CC, #42C8D2) !important;
  color: #fff !important;
  border: none !important;
  border-radius: 100px !important;
  font-family: 'Poppins', sans-serif !important;
  font-weight: 600 !important;
  font-size: 15px !important;
  padding: 13px 28px !important;
  cursor: pointer !important;
  width: 100% !important;
  transition: opacity 0.2s !important;
  box-shadow: 0 4px 20px rgba(30,99,204,0.28) !important;
}
.hs-form-frame .hs-button:hover,
.form-card .hs-button:hover { opacity: 0.88 !important; }

/* ===== LOGOS ===== */
.logos {
  padding: 52px 0;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.logos__container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}
.logos__label {
  text-align: center;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 28px;
}
.logos__track {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}
.logo-item {
  font-size: 15px;
  font-weight: 700;
  color: rgba(0,0,0,0.22);
  letter-spacing: -0.01em;
  transition: color var(--t);
  cursor: default;
}
.logo-item:hover { color: rgba(0,0,0,0.55); }

/* ===== STATS: dark band ===== */
.stats {
  padding: var(--pad-section) 0;
  background: var(--bg-dark);
}

.stats__container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--border-dark);
  border-radius: var(--r-lg);
  overflow: hidden;
  gap: 1px;
  background: var(--border-dark);
}

.stat-card {
  background: var(--bg-dark-card);
  padding: 40px 30px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background var(--t);
}
.stat-card:hover { background: var(--bg-dark-raised); }

.stat-card__number {
  font-size: clamp(34px, 4vw, 50px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-card__label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-on-dark-45);
  line-height: 1.4;
}

/* ===== PHILOSOPHY ===== */
.philosophy { padding: var(--pad-section) 0; background: var(--bg); }

.philosophy__container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 80px;
  align-items: start;
}

.philosophy__headline { margin-bottom: 28px; }

.philosophy__body {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 36px;
}
.philosophy__body p { font-size: 16px; }

.philosophy__quote {
  padding: 18px 20px 18px 22px;
  background: rgba(30,99,204,0.05);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  border-left: 3px solid var(--blue-deep);
  font-size: 15px;
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.65;
  margin: 8px 0;
}

/* Pillars */
.philosophy__pillars { padding: 4px 0; display: flex; flex-direction: column; }

.pillar {
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
}
.pillar:last-child { border-bottom: none; }

.pillar__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient);
  margin-bottom: 14px;
}
.pillar__title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.pillar__text { font-size: 14px; }

/* ===== TESTIMONIALS ===== */
.testimonials {
  padding: var(--pad-section) 0;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.testimonials__container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}
.testimonials__headline { margin-bottom: 48px; }

.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.testimonial-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: border-color var(--t), transform var(--t) var(--ease), box-shadow var(--t);
}
.testimonial-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.testimonial-card__stars {
  font-size: 19px;
  letter-spacing: 3px;
  background: linear-gradient(90deg, #D97706 0%, #FBBF24 30%, #FDE68A 50%, #FBBF24 70%, #D97706 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: star-shimmer 2.8s linear infinite;
}
@keyframes star-shimmer {
  0%   { background-position: 0% center; }
  100% { background-position: 200% center; }
}
.testimonial-card__quote {
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-secondary);
  flex: 1;
}
.testimonial-card__author {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.testimonial-card__name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}
.testimonial-card__company {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== FINAL CTA ===== */
.cta-final {
  padding: var(--pad-section) 0;
  text-align: center;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}
.cta-final::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 80% at 50% 50%, rgba(30,99,204,0.06) 0%, transparent 100%);
  pointer-events: none;
}

.cta-final__container {
  max-width: 620px;
  margin: 0 auto;
  padding: 0 var(--pad-x);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.cta-final__sub {
  font-size: 17px;
  line-height: 1.72;
  text-align: center;
  color: var(--text-secondary);
}

/* ===== FOOTER ===== */
.footer {
  padding: 44px 0;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
}
.footer__container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  gap: 40px;
  align-items: start;
}

.footer__brand { display: flex; flex-direction: column; gap: 6px; }
.footer__sub {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 2px;
}

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

.footer__right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 16px;
}

.footer__social {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--t);
}
.footer__social:hover { color: var(--text-primary); }

.footer__legal {
  font-size: 12px;
  color: var(--text-muted);
}

/* ===== CASE STUDIES ===== */
.case-studies {
  padding: var(--pad-section) 0;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.case-studies__container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}
.case-studies__header { margin-bottom: 48px; }
.case-studies__headline { margin-bottom: 12px; }
.case-studies__sub {
  font-size: 16px;
  max-width: 500px;
}
.case-studies__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.cs-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: box-shadow var(--t), transform var(--t) var(--ease), border-color var(--t);
}
.cs-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: var(--border-hover);
}
.cs-card__top {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.cs-card__logo {
  height: 28px;
  width: auto;
  object-fit: contain;
  object-position: left;
  mix-blend-mode: multiply;
}
.cs-card__tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.cs-card__title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  letter-spacing: -0.01em;
}
.cs-card__metrics {
  display: flex;
  gap: 24px;
  padding: 16px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.cs-card__metric {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.cs-card__metric-num {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.03em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.cs-card__metric-label {
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
}
.cs-card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue-deep);
  transition: gap var(--t);
  margin-top: auto;
}
.cs-card__link:hover { gap: 10px; }

.cs-card--coming {
  border-style: dashed;
  background: transparent;
  align-items: center;
  justify-content: center;
  min-height: 200px;
}
.cs-card--coming:hover { transform: none; box-shadow: none; }
.cs-card__coming-inner { text-align: center; max-width: 280px; }
.cs-card__coming-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  display: block;
  margin-bottom: 8px;
}
.cs-card--coming p {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

/* ===== FADE-IN ANIMATION ===== */
.fade-in {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}
.fade-in--delay { transition-delay: 0.15s; }
.fade-in.is-visible { opacity: 1; transform: translateY(0); }

/* ===== TABLET ===== */
@media (max-width: 1024px) {
  :root { --pad-section: 76px; }

  .hero__container { grid-template-columns: 1fr; gap: 48px; }
  .hero { align-items: flex-start; }
  .hero__sub { max-width: 100%; }

  .stats__container { grid-template-columns: repeat(2, 1fr); }
  .philosophy__container { grid-template-columns: 1fr; gap: 48px; }
  .testimonials__grid { grid-template-columns: repeat(2, 1fr); }

  .footer__container { grid-template-columns: 1fr 1fr; }
  .footer__middle { grid-column: 1 / -1; order: 3; }
  .footer__right { align-items: flex-start; }
}

/* ===== MOBILE ===== */
@media (max-width: 768px) {
  :root {
    --pad-section: 60px;
    --nav-h: 64px;
    --pad-x: 20px;
  }

  .nav__hamburger { display: flex; }

  .nav__links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(18px);
    padding: 20px var(--pad-x) 24px;
    border-bottom: 1px solid var(--border);
  }
  .nav__links.is-open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .nav__links .btn--nav {
    width: 100%;
    text-align: center;
    justify-content: center;
  }

  .hero {
    min-height: auto;
    padding-top: calc(var(--nav-h) + 48px);
    padding-bottom: 60px;
  }

  .testimonials__grid { grid-template-columns: 1fr; }
  .logos__track { gap: 28px; }
  .case-studies__grid { grid-template-columns: 1fr; }

  .footer__container { grid-template-columns: 1fr; gap: 28px; }
  .footer__right { align-items: flex-start; }
  .footer__middle { order: unset; }
}

/* ===== SMALL MOBILE ===== */
@media (max-width: 480px) {
  .stats__container { grid-template-columns: 1fr 1fr; }
  .form-card { padding: 26px 20px; }
  .btn--large { padding: 15px 28px; font-size: 15px; width: 100%; }
}