/* =====================================================
   SEMRUSH FREE TRIAL — GLOBAL STYLESHEET
   Single reusable base; no language-specific content.
   ===================================================== */

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Brand palette */
  --color-primary:     #FF642D;   /* Semrush orange */
  --color-primary-dk:  #E0521E;
  --color-dark:        #1A1A2E;
  --color-mid:         #3D3D5C;
  --color-light:       #F5F7FA;
  --color-white:       #FFFFFF;
  --color-border:      #E0E4EF;
  --color-success:     #28A745;
  --color-error:       #DC3545;
  --color-text:        #2C2C3E;
  --color-muted:       #6B7280;

  /* Typography */
  --font-base: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-size-base: 1rem;         /* 16px */
  --line-height-base: 1.6;

  /* Spacing scale */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Layout */
  --container-max: 1200px;
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;
  --shadow-sm:  0 1px 3px rgba(0,0,0,.08);
  --shadow-md:  0 4px 16px rgba(0,0,0,.12);
  --shadow-lg:  0 8px 32px rgba(0,0,0,.16);

  /* Transitions */
  --transition: 200ms ease;
}

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

body {
  font-family: var(--font-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { list-style: none; }

/* ---- Accessibility ---- */
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* ---- Container ---- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-base);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: 0 2px 8px rgba(255,100,45,.35);
}
.btn-primary:hover {
  background: var(--color-primary-dk);
  box-shadow: 0 4px 16px rgba(255,100,45,.45);
  transform: translateY(-1px);
  text-decoration: none;
}
.btn-primary:active { transform: translateY(0); }
.btn-sm  { padding: var(--space-2) var(--space-4); font-size: .875rem; }
.btn-lg  { padding: var(--space-4) var(--space-8); font-size: 1.125rem; }

/* ---- Typography ---- */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-dark);
}
h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: clamp(1.125rem, 2vw, 1.5rem); }

.section-title   { text-align: center; margin-bottom: var(--space-4); }
.section-subtitle {
  text-align: center;
  color: var(--color-muted);
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: var(--space-12);
}

/* =====================================================
   HEADER
   ===================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  height: 64px;
}
.logo img { height: 32px; width: auto; }
.header-nav ul {
  display: flex;
  gap: var(--space-6);
}
.header-nav a {
  font-size: .9375rem;
  color: var(--color-mid);
  transition: color var(--transition);
}
.header-nav a:hover { color: var(--color-primary); text-decoration: none; }
.header-cta { flex-shrink: 0; }

/* =====================================================
   HERO
   ===================================================== */
.hero {
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-mid) 100%);
  color: var(--color-white);
  padding: var(--space-20) 0;
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}
.hero-copy { max-width: 540px; }

/* Breadcrumb */
.breadcrumb { margin-bottom: var(--space-4); }
.breadcrumb ol { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.breadcrumb a {
  font-size: .8125rem;
  color: rgba(255,255,255,.65);
  transition: color var(--transition);
}
.breadcrumb a:hover { color: var(--color-white); text-decoration: none; }

.hero-title {
  color: var(--color-white);
  margin-bottom: var(--space-6);
}
.hero-subtitle {
  font-size: 1.125rem;
  color: rgba(255,255,255,.8);
  margin-bottom: var(--space-8);
  line-height: 1.7;
}

/* Inline form */
.trial-form-inline {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}
.trial-form-inline .form-group { flex: 1; min-width: 220px; position: relative; }
.trial-form-inline input[type="email"] {
  width: 100%;
  padding: var(--space-4) var(--space-4);
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: var(--font-base);
  background: var(--color-white);
  color: var(--color-text);
  transition: border-color var(--transition);
}
.trial-form-inline input[type="email"]:focus {
  border-color: var(--color-primary);
  outline: none;
}
.trial-form-inline input[type="email"]:invalid:not(:placeholder-shown) {
  border-color: var(--color-error);
}
.form-error {
  display: block;
  font-size: .8125rem;
  color: var(--color-error);
  margin-top: var(--space-1);
  min-height: 1.2em;
}

.trial-note, .no-cc {
  font-size: .875rem;
  color: rgba(255,255,255,.65);
}
.no-cc { margin-top: var(--space-2); }

.hero-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.hero-media img { width: 100%; height: auto; }

/* =====================================================
   TRUST BAR
   ===================================================== */
.trust-bar {
  background: var(--color-light);
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--color-border);
}
.trust-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
  text-align: center;
}
.trust-lead {
  font-size: .9375rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--color-muted);
}
.trust-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-8);
}
.trust-logos img {
  height: 24px;
  width: auto;
  filter: grayscale(1) opacity(.55);
  transition: filter var(--transition);
}
.trust-logos img:hover { filter: grayscale(0) opacity(1); }

.trust-stats {
  display: flex;
  gap: var(--space-12);
  flex-wrap: wrap;
  justify-content: center;
}
.stat { text-align: center; }
.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
}
.stat-label {
  font-size: .875rem;
  color: var(--color-muted);
}

/* =====================================================
   FEATURES
   ===================================================== */
.features { padding: var(--space-20) 0; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
}
.feature-card {
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.feature-icon { margin-bottom: var(--space-4); }
.feature-card h3 { margin-bottom: var(--space-3); }
.feature-card p { color: var(--color-muted); }

/* =====================================================
   TESTIMONIALS
   ===================================================== */
.testimonials {
  background: var(--color-light);
  padding: var(--space-20) 0;
}
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8);
  margin-top: var(--space-8);
}
.testimonial-card {
  background: var(--color-white);
  padding: var(--space-8);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--color-primary);
}
.testimonial-card p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  font-style: italic;
}
.testimonial-card footer { margin-top: auto; }
.testimonial-card cite { font-style: normal; }
.testimonial-card strong { display: block; font-weight: 700; }
.testimonial-card span   { font-size: .875rem; color: var(--color-muted); }

/* =====================================================
   PRICING
   ===================================================== */
.pricing { padding: var(--space-20) 0; }
.pricing-inner { max-width: 560px; margin-inline: auto; text-align: center; }
.pricing-card {
  background: var(--color-white);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-12) var(--space-8);
  box-shadow: var(--shadow-md);
  position: relative;
  margin-top: var(--space-8);
}
.pricing-badge {
  position: absolute;
  top: -1rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: var(--color-white);
  font-size: .8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}
.pricing-plan {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--space-4);
}
.pricing-price {
  margin-bottom: var(--space-6);
}
.price-amount {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
}
.price-period { font-size: .9375rem; color: var(--color-muted); margin-left: var(--space-2); }
.pricing-features {
  text-align: left;
  margin: var(--space-6) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.pricing-features li {
  padding-left: var(--space-6);
  position: relative;
  color: var(--color-text);
}
.pricing-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: 700;
}
.pricing-cta { width: 100%; margin-top: var(--space-4); }
.pricing-note {
  font-size: .8125rem;
  color: var(--color-muted);
  margin-top: var(--space-4);
}

/* =====================================================
   FAQ
   ===================================================== */
.faq { padding: var(--space-20) 0; background: var(--color-light); }
.faq-list {
  max-width: 720px;
  margin: var(--space-8) auto 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.faq-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.faq-question { margin: 0; }
.faq-toggle {
  width: 100%;
  padding: var(--space-6);
  background: none;
  border: none;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-base);
  color: var(--color-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  transition: color var(--transition);
}
.faq-toggle::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--color-primary);
  flex-shrink: 0;
  transition: transform var(--transition);
}
.faq-toggle[aria-expanded="true"]::after { transform: rotate(45deg); }
.faq-toggle:hover { color: var(--color-primary); }
.faq-answer {
  padding: 0 var(--space-6) var(--space-6);
  color: var(--color-muted);
  line-height: 1.7;
}
.faq-answer[hidden] { display: none; }

/* =====================================================
   STICKY BOTTOM CTA
   ===================================================== */
.sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  box-shadow: 0 -4px 16px rgba(0,0,0,.08);
  z-index: 90;
  transform: translateY(100%);
  transition: transform 300ms ease;
}
.sticky-cta.visible { transform: translateY(0); }
.sticky-cta .no-cc { margin: 0; color: var(--color-muted); font-size: .8125rem; }
/* Hide on desktop — show only on mobile */
@media (min-width: 1024px) { .sticky-cta { display: none; } }

/* =====================================================
   FOOTER
   ===================================================== */
.site-footer {
  background: var(--color-dark);
  color: rgba(255,255,255,.65);
  padding: var(--space-8) 0;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.footer-copy { font-size: .875rem; }
.footer-nav { display: flex; gap: var(--space-6); flex-wrap: wrap; }
.footer-nav a {
  font-size: .875rem;
  color: rgba(255,255,255,.65);
  transition: color var(--transition);
}
.footer-nav a:hover { color: var(--color-white); text-decoration: none; }

.footer-lang { position: relative; }
.footer-lang select {
  background: transparent;
  border: 1px solid rgba(255,255,255,.25);
  color: rgba(255,255,255,.75);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-3);
  font-size: .875rem;
  font-family: var(--font-base);
  cursor: pointer;
}

/* =====================================================
   RESPONSIVE
   ===================================================== */
@media (max-width: 1023px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-media { display: none; }
  .header-nav { display: none; }
  .hero { padding: var(--space-16) 0 calc(var(--space-16) + 80px); }
}

@media (max-width: 767px) {
  .container { padding-inline: var(--space-4); }
  .trust-stats { gap: var(--space-8); }
  .features-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .trial-form-inline { flex-direction: column; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-nav { justify-content: center; }
}

@media (max-width: 479px) {
  .stat-number { font-size: 1.5rem; }
  .trust-stats { gap: var(--space-6); }
}

/* =====================================================
   PRINT
   ===================================================== */
@media print {
  .site-header, .sticky-cta, .site-footer { display: none; }
  .hero { background: none; color: var(--color-text); padding: 0; }
  .hero-title { color: var(--color-dark); }
}