/* ============================================
   Mostbit Landing - Color palette & variables
   REPLACE: Only design tokens below; content in HTML
   ============================================ */
:root {
  /* Primary accent */
  --color-primary: #0A4C9A;
  --color-primary-light: #C9E7F8;
  /* Backgrounds */
  --color-bg: #FFFFFF;
  --color-bg-dark: #003265;
  /* Accents */
  --color-accent-blue: #6CA8EF;
  --color-accent-green: #8ABF0D;
  --color-accent-orange: #FB5700;
  /* Derived */
  --color-text: #1a1a1a;
  --color-text-muted: #555;
  --color-border: rgba(10, 76, 154, 0.15);
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'Consolas', 'Monaco', monospace;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 20px rgba(0, 50, 101, 0.08);
  --shadow-hover: 0 8px 32px rgba(0, 50, 101, 0.12);
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--color-accent-blue);
}

/* ========== Layout ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.site-header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo-link {
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--color-bg-dark);
  letter-spacing: -0.02em;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.nav-list a {
  font-weight: 500;
  color: var(--color-text);
}
.nav-list a:hover {
  color: var(--color-primary);
}

/* ========== Main / Hero ========== */
.hero {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 1.5rem 4rem;
  background: linear-gradient(180deg, var(--color-primary-light) 0%, var(--color-bg) 55%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 80' fill='none' opacity='0.06'%3E%3Cpath d='M0 40 Q 50 20, 100 40 T 200 40 T 300 40 T 400 40' stroke='%23003465' stroke-width='2' fill='none'/%3E%3Cpath d='M0 45 Q 60 25, 120 45 T 240 45 T 360 45' stroke='%23003465' stroke-width='1.5' fill='none'/%3E%3C/svg%3E") repeat-x bottom;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-title {
  margin: 0 0 0.5rem;
  font-size: clamp(2.2rem, 6vw, 3.5rem);
  font-weight: 800;
  color: var(--color-bg-dark);
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.hero-subtitle {
  margin: 0 0 2rem;
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--color-primary);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.hero-desc {
  max-width: 520px;
  margin: 0 auto 2rem;
  font-size: 1.05rem;
  color: var(--color-text-muted);
}

.hero-pills {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}
.hero-pills span {
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(255, 255, 255, 0.8);
  border-radius: 999px;
  border: 1px solid var(--color-border);
}
.hero-wave {
  color: var(--color-primary);
  opacity: 0.7;
}
.hero-wave svg {
  width: 100%;
  max-width: 280px;
  height: auto;
}

/* ========== Screenshots section ========== */
.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
}

.section-title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  color: var(--color-bg-dark);
  text-align: center;
}

.section-subtitle {
  margin: 0 0 2.5rem;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.key-points {
  padding-top: 2rem;
  padding-bottom: 2rem;
}
.key-points-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem 2rem;
  max-width: 700px;
  margin: 0 auto;
}
.key-point {
  font-size: 1.05rem;
  color: var(--color-text-muted);
}
.key-point strong {
  color: var(--color-primary);
  font-weight: 700;
}
.key-point:nth-child(2) strong { color: var(--color-accent-green); }
.key-point:nth-child(3) strong { color: var(--color-accent-orange); }

/* REPLACE: Add your screenshot images to images/screenshots/ and list paths below are placeholders */
.screenshots-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  justify-items: center;
  margin-top: 2rem;
}

.screenshot-wrap {
  width: 100%;
  max-width: 260px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
}

.screenshot-wrap:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.screenshot-wrap img {
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 19;
  object-fit: cover;
}

/* ========== Features / Cards ========== */
.features {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-primary-light) 15%, var(--color-bg) 50%);
  padding: 4rem 1.5rem;
}

.features-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.feature-card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.feature-card .icon-wrap {
  width: 48px;
  height: 48px;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

.feature-card.accent-green .icon-wrap { color: var(--color-accent-green); }
.feature-card.accent-orange .icon-wrap { color: var(--color-accent-orange); }

.feature-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.2rem;
  color: var(--color-bg-dark);
}

.feature-card p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.feature-card.card-border-blue { border-left: 4px solid var(--color-accent-blue); }
.feature-card.card-border-green { border-left: 4px solid var(--color-accent-green); }

/* ========== CTA strip ========== */
.cta-strip {
  background: var(--color-bg-dark);
  color: var(--color-bg);
  padding: 3rem 1.5rem;
  text-align: center;
}

.cta-strip-inner {
  max-width: 700px;
  margin: 0 auto;
}

.cta-strip h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.4rem, 3vw, 1.75rem);
  font-weight: 700;
}

.cta-strip p {
  margin: 0 0 1.5rem;
  opacity: 0.9;
  font-size: 1rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1rem;
}

.footer-links a {
  color: var(--color-primary-light);
  font-weight: 500;
}
.footer-links a:hover {
  color: var(--color-bg);
}

/* ========== Page content (privacy, terms, contacts) ========== */
.page-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.page-content h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.75rem, 4vw, 2rem);
  color: var(--color-bg-dark);
}

.page-content h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.25rem;
  color: var(--color-primary);
}

.page-content p,
.page-content li {
  color: var(--color-text);
  margin: 0 0 1rem;
}

.page-content ul {
  padding-left: 1.5rem;
  margin: 0 0 1rem;
}

.page-content .updated {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

/* ========== Contacts ========== */
.contact-block {
  background: var(--color-primary-light);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin: 2rem 0;
  border: 1px solid rgba(10, 76, 154, 0.2);
}

.contact-block h2 {
  margin: 0 0 1rem;
  font-size: 1.2rem;
  color: var(--color-bg-dark);
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.contact-list li {
  margin: 0.5rem 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.contact-list a {
  color: var(--color-primary);
  font-weight: 500;
}

.contact-form {
  margin-top: 2rem;
  padding: 2rem;
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.contact-form label {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 500;
  color: var(--color-bg-dark);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.65rem 0.9rem;
  margin-bottom: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: border-color var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), transform 0.15s ease;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-bg);
}
.btn-primary:hover {
  background: var(--color-bg-dark);
}

.btn-accent {
  background: var(--color-accent-orange);
  color: var(--color-bg);
}
.btn-accent:hover {
  background: #e04d00;
}

/* ========== Decorative wave strip ========== */
.wave-strip {
  height: 60px;
  background: var(--color-bg-dark);
  position: relative;
  overflow: hidden;
}

.wave-strip svg {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

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

@media (max-width: 640px) {
  .hero {
    min-height: 50vh;
    padding: 2rem 1rem 3rem;
  }
  .hero-pills span {
    font-size: 0.75rem;
    padding: 0.3rem 0.6rem;
  }
  .section {
    padding: 3rem 1rem;
  }
  .key-points-inner {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }
  .features {
    padding: 3rem 1rem;
  }
  .nav-list {
    gap: 1rem;
  }
}