/* ==========================================================================
   Riverb Static Site - styles.css
   ========================================================================== */

/* Font */
@font-face {
  font-family: 'TT Commons';
  src: url('/fonts/TT Commons Regular.otf') format('opentype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* CSS Custom Properties */
:root {
  --colour-purple: #5336F5;
  --colour-purple-dark: #2F17B6;
  --colour-purple-light: #F8F7FF;
  --colour-white: #FFFFFF;
  --colour-black: #1F1F1F;
  --colour-grey: #ACB5BD;

  --font-family: 'TT Commons', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 3rem;
  --space-xl: 5rem;

  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--colour-black);
  background-color: var(--colour-purple-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

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

a {
  text-decoration: none;
  color: inherit;
}

/* Typography */
h1 {
  font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--colour-purple);
  margin: 0;
  padding-bottom: 0.5rem;
}

h2 {
  font-size: clamp(1.5rem, 3vw + 0.5rem, 1.75rem);
  font-weight: 400;
  line-height: 1.2;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

h2 a {
  color: var(--colour-purple);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color var(--transition);
}

h2 a:hover {
  color: var(--colour-purple-dark);
}

p {
  margin-bottom: var(--space-sm);
}

.lead {
  font-size: clamp(1rem, 2vw + 0.25rem, 1.25rem);
  line-height: 1.6;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  background-color: var(--colour-white);
  padding: var(--space-xl) var(--space-md);
}

.hero__content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.logo {
  width: 190px;
  margin: 0 auto var(--space-md);
}

/* Heading with purple underline effect */
.heading-wrapper {
  display: inline-block;
  background: linear-gradient(
    90deg,
    var(--colour-white) 15%,
    var(--colour-purple) 15%,
    var(--colour-purple) 85%,
    var(--colour-white) 85%
  );
  padding-bottom: 3px;
  margin-top: var(--space-lg);
}

.heading-wrapper h1 {
  background-color: var(--colour-white);
  display: inline-block;
  margin: 0;
}

/* Button */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-family);
  font-size: 0.875rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--colour-white);
  background-color: var(--colour-purple);
  border: 1px solid var(--colour-purple);
  border-radius: 4px;
  cursor: pointer;
  transition: background-color var(--transition), border-color var(--transition);
  margin-top: var(--space-md);
}

.btn:hover {
  background-color: var(--colour-purple-dark);
  border-color: var(--colour-purple-dark);
}

/* ==========================================================================
   Peeps Banner
   ========================================================================== */

.peeps {
  height: 200px;
  background-image: url('/images/peeps.png');
  background-repeat: repeat-x;
  background-position: top center;
  background-size: auto 100%;
}

@media (min-width: 768px) {
  .peeps {
    height: 280px;
  }
}

/* ==========================================================================
   Tagline Section
   ========================================================================== */

.tagline {
  background-color: var(--colour-purple);
  color: var(--colour-white);
  text-align: center;
  padding: var(--space-lg) var(--space-md);
}

.tagline p {
  font-size: 0.75rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */

.contact {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
}

.contact__label {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--colour-purple);
  margin-bottom: var(--space-xs);
}

.contact__email {
  display: inline-block;
  font-size: clamp(1.25rem, 3vw + 0.5rem, 1.75rem);
  font-weight: 600;
  color: var(--colour-purple);
  transition: color var(--transition);
}

.contact__email:hover {
  color: var(--colour-purple-dark);
}

/* Copyright with grey line effect */
.copyright-wrapper {
  display: block;
  margin-top: var(--space-lg);
}

.copyright-wrapper::before {
  content: '';
  display: block;
  width: 50%;
  max-width: 400px;
  height: 1px;
  background-color: var(--colour-grey);
  margin: 0 auto var(--space-md);
}

.copyright {
  font-size: 0.875rem;
  color: var(--colour-black);
  margin: 0;
}

/* ==========================================================================
   Accessibility
   ========================================================================== */

.btn:focus,
a:focus {
  outline: 2px solid var(--colour-purple);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}