/*
  Stylesheet for the RadiantFlow landing page
  Defines the colour palette, typography and layout for each section.
*/

/* Colour variables for easy theming */
:root {
  --color-primary: #6c5dd3; /* primary accent (purple) */
  --color-secondary: #4a8fd8; /* secondary accent (blue) */
  --color-bg: #050a2d; /* darkest background */
  --color-surface: #0f185b; /* card backgrounds */
  --color-surface-alt: #101c58; /* alternate card backgrounds */
  --color-text: #e5e8f0; /* high‑contrast text */
  --color-muted: #cdd4f3; /* muted text */
  --color-light: #ffffff; /* pure white */
}

/* Global reset */
* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px;
}

/* Header */
header {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 10;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-light);
  margin: 0;
}

.nav a {
  margin-left: 20px;
  color: var(--color-light);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav a.cta {
  padding: 8px 16px;
  background-color: var(--color-primary);
  border-radius: 4px;
}

.nav a:hover {
  color: var(--color-primary);
}

/* Hero Section */
.hero {
  position: relative;
  height: 90vh;
  min-height: 550px;
  background-image: url("images/hero-bg.png");
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  color: var(--color-light);
}

.hero .overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1;
}

.hero .container {
  position: relative;
  z-index: 2;
  max-width: 650px;
}

.hero h2 {
  font-size: 3rem;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero p {
  font-size: 1.15rem;
  margin-bottom: 40px;
  color: var(--color-muted);
}

.btn-primary {
  display: inline-block;
  background-color: var(--color-primary);
  color: var(--color-light);
  padding: 12px 28px;
  border: none;
  border-radius: 4px;
  text-decoration: none;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

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

/* Benefits Section */
.benefits {
  padding: 80px 0;
  background-color: var(--color-bg);
}

.benefits h2 {
  text-align: center;
  margin-bottom: 40px;
  font-size: 2.5rem;
}

.benefit-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.benefit-item {
  background-color: var(--color-surface);
  padding: 30px;
  border-radius: 8px;
  text-align: left;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.25);
}

.benefit-item .icon {
  color: var(--color-primary);
  display: inline-block;
  margin-bottom: 15px;
}

.benefit-item h3 {
  margin: 0 0 10px;
  font-size: 1.4rem;
  color: var(--color-light);
}

.benefit-item p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-muted);
}

/* Features Section */
.features {
  padding: 80px 0;
  background-color: #0a1149;
  color: var(--color-light);
}

.features h2 {
  text-align: center;
  margin-bottom: 40px;
  font-size: 2.5rem;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.feature-item {
  background-color: var(--color-surface-alt);
  padding: 30px;
  border-radius: 8px;
  text-align: left;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.25);
}

.feature-item .icon {
  color: var(--color-secondary);
  display: inline-block;
  margin-bottom: 15px;
}

.feature-item h3 {
  margin: 0 0 10px;
  font-size: 1.4rem;
  color: var(--color-light);
}

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

/* Call to Action Section */
.cta-section {
  padding: 80px 0;
  text-align: center;
  background: radial-gradient(circle at center, var(--color-primary) 0%, #0f185b 100%);
  color: var(--color-light);
}

.cta-section h2 {
  margin-bottom: 20px;
  font-size: 2.5rem;
}

.cta-section p {
  margin-bottom: 30px;
  font-size: 1.1rem;
  color: var(--color-muted);
}

/* Contact Section */
.contact {
  padding: 80px 0;
  background-color: var(--color-surface);
}

.contact h2 {
  text-align: center;
  margin-bottom: 20px;
  font-size: 2.5rem;
  color: var(--color-light);
}

.contact p {
  text-align: center;
  margin-bottom: 40px;
  font-size: 1.1rem;
  color: var(--color-muted);
}

.contact form {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.contact input,
.contact textarea {
  padding: 12px 15px;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  color: var(--color-bg);
}

.contact input::placeholder,
.contact textarea::placeholder {
  color: #888fae;
}

.contact input:focus,
.contact textarea:focus {
  outline: 2px solid var(--color-primary);
}

.contact button {
  align-self: flex-start;
}

/* Footer */
footer {
  padding: 20px 0;
  background-color: var(--color-bg);
  text-align: center;
  color: #787fb3;
  font-size: 0.9rem;
}

footer a {
  color: var(--color-primary);
  text-decoration: none;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .hero h2 {
    font-size: 2.5rem;
  }
  .hero p {
    font-size: 1rem;
  }
  .benefits h2,
  .features h2,
  .contact h2,
  .cta-section h2 {
    font-size: 2rem;
  }
}