/* Tesis Coach — landing demo */
:root {
  --tc-red: #c41e3a;
  --tc-red-dark: #9e1830;
  --tc-dark: #1a1a1a;
  --tc-gray: #555;
  --tc-light: #f8f8f8;
  --tc-white: #fff;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

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

body {
  margin: 0;
  font-family: var(--font);
  color: var(--tc-dark);
  line-height: 1.6;
  background: var(--tc-white);
}

.demo-banner {
  background: #fff3cd;
  color: #856404;
  text-align: center;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  border-bottom: 1px solid #ffeeba;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.site-header {
  padding: 1rem 0;
  border-bottom: 1px solid #eee;
  background: var(--tc-white);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--tc-red);
  text-decoration: none;
}

.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--tc-red);
  color: var(--tc-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
}

.nav-cta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s, background 0.15s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--tc-red);
  color: var(--tc-white);
}

.btn-primary:hover {
  background: var(--tc-red-dark);
}

.btn-outline {
  background: transparent;
  color: var(--tc-red);
  border-color: var(--tc-red);
}

.btn-outline:hover {
  background: #fff0f2;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.05rem;
}

/* Hero */
.hero {
  padding: 4rem 0 3rem;
  background: linear-gradient(180deg, #fff 0%, #fdf5f6 100%);
  text-align: center;
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  line-height: 1.2;
  margin: 0 0 1rem;
  max-width: 800px;
  margin-inline: auto;
}

.hero .lead {
  font-size: 1.15rem;
  color: var(--tc-gray);
  max-width: 600px;
  margin: 0 auto 2rem;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-top: 2.5rem;
}

.stat {
  text-align: center;
}

.stat strong {
  display: block;
  font-size: 1.8rem;
  color: var(--tc-red);
}

.stat span {
  font-size: 0.85rem;
  color: var(--tc-gray);
}

/* Sections */
section {
  padding: 4rem 0;
}

section:nth-child(even) {
  background: var(--tc-light);
}

.section-title {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section-title h2 {
  font-size: 1.8rem;
  margin: 0 0 0.5rem;
}

.section-title p {
  color: var(--tc-gray);
  margin: 0;
}

/* Cards grid */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--tc-white);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.card p {
  margin: 0;
  color: var(--tc-gray);
  font-size: 0.95rem;
}

.card .icon {
  font-size: 1.8rem;
  margin-bottom: 0.75rem;
}

/* Problem block */
.problem-block {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.problem-block h2 {
  font-size: 1.8rem;
}

/* Pricing */
.pricing {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  align-items: start;
}

.price-card {
  background: var(--tc-white);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  border: 2px solid transparent;
}

.price-card.featured {
  border-color: var(--tc-red);
  position: relative;
}

.price-card h3 {
  margin: 0 0 0.25rem;
}

.price-card .amount {
  font-size: 1.5rem;
  color: var(--tc-red);
  font-weight: 700;
  margin-bottom: 1rem;
}

.price-card ul {
  margin: 0 0 1.5rem;
  padding-left: 1.2rem;
  color: var(--tc-gray);
  font-size: 0.9rem;
}

.price-card li {
  margin-bottom: 0.35rem;
}

/* Testimonials */
.testimonials {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.quote {
  background: var(--tc-white);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--tc-red);
}

.quote p {
  margin: 0 0 1rem;
  font-style: italic;
}

.quote cite {
  font-size: 0.85rem;
  color: var(--tc-gray);
  font-style: normal;
}

/* CTA band */
.cta-band {
  background: var(--tc-red);
  color: var(--tc-white);
  text-align: center;
  padding: 3rem 1.5rem;
}

.cta-band h2 {
  margin: 0 0 1rem;
}

.cta-band .btn-primary {
  background: var(--tc-white);
  color: var(--tc-red);
}

.cta-band .btn-primary:hover {
  background: #f0f0f0;
}

/* Footer */
.site-footer {
  padding: 2rem 0;
  text-align: center;
  color: var(--tc-gray);
  font-size: 0.85rem;
  border-top: 1px solid #eee;
}

@media (max-width: 600px) {
  .hero {
    padding: 2.5rem 0 2rem;
  }

  .nav-cta .btn-outline {
    display: none;
  }
}