:root {
  --blue-dark: #0D1B2A;          /* Azul marino oscuro */
  --gray-anthracite: #232931;    /* Gris antracita */
  --green-deep: #20543A;         /* Verde oscuro profesional */
  --green-accent: #388E3C;       /* Verde acento financiero */
  --blue-accent: #1976D2;        /* Azul acento profesional */
  --gold-accent: #FFD600;        /* Dorado para estrellas */
  --white: #FFFFFF;              /* Blanco para textos y contrastes */
  --text-main: #EEEEEE;          /* Texto principal */
  --text-secondary: #B0B0B0;     /* Texto secundario */
  --black: #111418;              /* Negro profundo para detalles */
}

html {
  box-sizing: border-box;
  font-size: 16px;
}

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

body {
  margin: 0;
  font-family: 'Inter', Arial, sans-serif;
  min-height: 100vh;
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--gray-anthracite) 60%, var(--green-deep) 100%);
  color: var(--text-main);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}

header {
  width: 100%;
  padding: 1.5rem 1rem 1rem 1rem;
  text-align: center;
  background: rgba(35,41,49,0.15);
}

.logo {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  box-shadow: 0 2px 8px rgba(25,118,210,0.13);
  margin: 0 auto 1rem auto;
  background: var(--gray-anthracite);
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo img {
  width: 44px;
  height: 44px;
}

h1 {
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--white);
  margin: 0 0 0.4rem 0;
  text-shadow: 0 2px 12px rgba(13,27,42,0.18);
}

p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin: 0 0 1.2rem 0;
  text-shadow: 0 1px 8px rgba(13,27,42,0.09);
}

.cta {
  margin: 1.5rem 0 0 0;
}
.cta a {
  display: inline-block;
  background: linear-gradient(90deg, var(--green-accent) 0%, var(--blue-accent) 100%);
  color: var(--white);
  padding: 0.9rem 2rem;
  border-radius: 24px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1rem;
  box-shadow: 0 2px 8px rgba(25,118,210,0.13);
  transition: background 0.2s, box-shadow 0.2s;
  letter-spacing: 1px;
}
.cta a:hover {
  background: linear-gradient(90deg, var(--blue-accent) 0%, var(--green-accent) 100%);
  box-shadow: 0 4px 16px var(--green-accent);
}

.screenshots {
  margin: 2rem 0 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  align-items: center;
  width: 100%;
  padding: 0 1rem;
}
.screenshot-frame {
  background: var(--gray-anthracite);
  border-radius: 18px;
  box-shadow: 0 4px 16px rgba(13,27,42,0.18);
  padding: 1rem 0.7rem 0.7rem 0.7rem;
  max-width: 320px;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: transform 0.15s;
}
.screenshot-frame:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 8px 24px rgba(25,118,210,0.13), 0 2px 8px rgba(32,84,58,0.10);
}
.screenshot-frame img {
  width: 90%;
  max-width: 180px;
  border-radius: 12px;
  margin-bottom: 0.6rem;
  box-shadow: 0 2px 8px rgba(25,118,210,0.10);
  background: var(--black);
}
.screenshot-caption {
  font-size: 1rem;
  color: var(--green-accent);
  font-weight: 600;
  text-align: center;
  margin-bottom: 0.2rem;
}

.user-reviews {
  width: 100%;
  padding: 1.5rem 1rem;
  background: linear-gradient(90deg, #232931cc 60%, #20543Acc 100%);
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.user-reviews h2 {
  font-size: 1.3rem;
  color: var(--green-accent);
  font-weight: 700;
  margin-bottom: 1.2rem;
  text-align: center;
}

.reviews-list {
  width: 100%;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.review-card {
  background: var(--gray-anthracite);
  border-radius: 16px;
  box-shadow: 0 2px 8px rgba(25,118,210,0.10);
  padding: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.review-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--green-accent);
  background: var(--black);
}

.review-content {
  flex: 1;
}

.review-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.2rem;
}

.review-username {
  font-weight: 600;
  color: var(--green-accent);
  font-size: 1rem;
}

.review-stars {
  display: flex;
  align-items: center;
  gap: 0.1rem;
}

.review-stars svg {
  width: 18px;
  height: 18px;
  fill: var(--gold-accent);
}

.review-text {
  font-size: 0.98rem;
  color: var(--text-main);
  margin-top: 0.2rem;
}

/* Footer */
footer {
  margin-top: auto;
  width: 100%;
  padding: 1rem 0;
  text-align: center;
  background: rgba(35,41,49,0.18);
  color: var(--text-secondary);
  font-size: 0.95rem;
  letter-spacing: 1px;
}

/* Desktop/tablet */
@media (min-width: 700px) {
  header {
    padding: 2.5rem 0 1.5rem 0;
  }
  h1 {
    font-size: 2.2rem;
  }
  .screenshots {
    flex-direction: row;
    justify-content: center;
    gap: 2rem;
    padding: 0 2rem;
  }
  .screenshot-frame {
    max-width: 220px;
    min-width: 180px;
    padding: 1.2rem;
  }
  .user-reviews {
    padding: 2.2rem 0;
  }
  .reviews-list {
    max-width: 700px;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
  }
  .review-card {
    min-width: 280px;
    max-width: 320px;
    flex-direction: column;
    align-items: flex-start;
  }
}