/*!
 * Robbie Elias — robbieelias.ca
 * Framework-free styles (no Bootstrap dependency)
 */

:root {
  --color-primary: #5f939a;
  --color-primary-hover: #128f76;
  --color-secondary: #302929;
  --color-secondary-dark: #201e1e;
  --color-text: #212529;
  --color-caption: #5e5555;
  --nav-height: 72px;
  --nav-height-lg: 106px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Lato', Helvetica, Arial, sans-serif;
  color: var(--color-text);
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Montserrat', Helvetica, Arial, sans-serif;
  font-weight: 700;
  margin: 0;
}

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

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

a:hover, a:focus, a:active {
  color: var(--color-primary-hover);
}

ul {
  margin: 0;
  padding: 0;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: 4rem 0;
  scroll-margin-top: var(--nav-height);
}

@media (min-width: 992px) {
  section {
    scroll-margin-top: var(--nav-height-lg);
  }
}

.section-heading {
  text-align: center;
  text-transform: uppercase;
  font-size: 2.25rem;
  line-height: 2rem;
}

@media (min-width: 992px) {
  .section-heading {
    font-size: 3rem;
    line-height: 2.5rem;
  }
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: 0;
  left: 0.5rem;
  z-index: 1100;
  background: var(--color-primary);
  color: #fff;
  padding: 0.75rem 1rem;
  border-radius: 0.25rem;
  transform: translateY(calc(-100% - 10px));
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0.5rem);
  color: #fff;
}

/* Star dividers */
.divider {
  display: flex;
  align-items: center;
  max-width: 15rem;
  margin: 2.5rem auto;
}

.divider-line {
  flex: 1 1 auto;
  height: 0.25rem;
}

.divider-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  padding: 0 0.5em;
  font-size: 1.25rem;
  line-height: 1;
}

.divider-light .divider-line {
  background-color: #fff;
}

.divider-light .divider-icon {
  color: #fff;
}

.divider-dark .divider-line {
  background-color: var(--color-secondary);
}

.divider-dark .divider-icon {
  color: var(--color-secondary);
}

/* Navigation */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1030;
  background-color: var(--color-secondary);
  padding: 1rem 0;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  transition: padding 0.3s ease;
}

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

.nav-brand {
  color: #fff;
  font-size: 1.25rem;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 0.25rem;
  padding: 0.8rem 1rem;
  font: inherit;
  font-size: 0.8rem;
  text-transform: uppercase;
  cursor: pointer;
}

.nav-toggle:hover, .nav-toggle:focus {
  background-color: var(--color-primary-hover);
}

.nav-menu {
  list-style: none;
  order: 3;
  flex-basis: 100%;
  display: none;
  flex-direction: column;
  margin-top: 1rem;
}

.nav-menu.is-open {
  display: flex;
}

.nav-menu a {
  display: block;
  padding: 0.75rem 1rem;
  color: #fff;
  letter-spacing: 0.0625rem;
  border-radius: 0.25rem;
}

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

@media (min-width: 992px) {
  .site-nav {
    padding: 1.5rem 0;
  }

  .site-nav.nav-shrink {
    padding: 0.5rem 0;
  }

  .nav-brand {
    font-size: 2em;
    transition: font-size 0.3s ease;
  }

  .site-nav.nav-shrink .nav-brand {
    font-size: 1.5em;
  }

  .nav-toggle {
    display: none;
  }

  .nav-menu {
    order: 0;
    flex-basis: auto;
    display: flex !important;
    flex-direction: row;
    margin-top: 0;
  }

  .nav-menu a.active {
    color: #fff;
    background-color: var(--color-primary);
  }
}

/* Header / Masthead */
.masthead {
  background-color: var(--color-primary);
  color: #fff;
  text-align: center;
  padding-top: calc(2rem + var(--nav-height));
  padding-bottom: 2rem;
}

.masthead h1 {
  font-size: 3rem;
  line-height: 3rem;
  text-transform: uppercase;
}

.masthead h2 {
  font-size: 1.3rem;
  font-family: 'Lato', sans-serif;
  font-weight: 300;
  margin-top: 0.5rem;
}

@media (min-width: 992px) {
  .masthead {
    padding-top: calc(2rem + var(--nav-height-lg));
  }

  .masthead h1 {
    font-size: 4.75em;
    line-height: 4rem;
  }

  .masthead h2 {
    font-size: 1.75em;
  }
}

.profile-container {
  position: relative;
  width: 280px;
  height: 280px;
  margin: 0 auto 3rem;
}

.profile {
  width: 100%;
  height: 100%;
  margin: 0 auto;
  opacity: 0;
  animation: fadeIn ease 1.2s forwards;
}

@media (min-width: 992px) {
  .profile-container {
    width: 340px;
    height: 340px;
  }
}

@keyframes fadeIn {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

/* Portfolio */
.portfolio-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px 24px;
}

@media (min-width: 768px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .portfolio-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.portfolio-item {
  position: relative;
  display: block;
  overflow: hidden;
}

.portfolio-item-caption {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(95, 147, 154, 0.9);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease;
}

.portfolio-item:hover .portfolio-item-caption,
.portfolio-item:focus-within .portfolio-item-caption {
  opacity: 1;
  visibility: visible;
}

.portfolio-item-caption-content {
  font-size: 1.5rem;
}

.app-link {
  display: inline-block;
  margin: 0 1rem;
  color: #fff;
}

.app-link:hover, .app-link:focus {
  color: #e5e5e5;
}

.portfolio-caption {
  text-align: center;
  margin: 1rem 0 0.25rem;
  color: var(--color-secondary);
  font-size: 1.25rem;
}

.portfolio-caption-text {
  text-align: center;
  color: var(--color-caption);
  margin: 0;
  font-size: 0.95rem;
}

/* About */
.about {
  background-color: var(--color-primary);
  color: #fff;
}

.about-grid {
  display: grid;
  gap: 2rem;
  margin-top: 1rem;
}

@media (min-width: 992px) {
  .about-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.lead {
  font-size: 1.25rem;
  font-weight: 300;
}

/* Contact */
.contact {
  text-align: center;
}

/* Footer */
.site-footer {
  padding: 5rem 0;
  background-color: var(--color-secondary);
  color: #fff;
  text-align: center;
}

.footer-grid {
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.footer-grid h4 {
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.social-list {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 0.75rem;
}

.btn-social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.25rem;
  height: 3.25rem;
  font-size: 1.25rem;
  color: #fff;
  border: 2px solid #fff;
  border-radius: 50%;
  background: transparent;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.btn-social:hover, .btn-social:focus {
  background-color: #fff;
  color: var(--color-secondary);
}

.copyright {
  background-color: var(--color-secondary-dark);
}

/* Scroll to top */
.scroll-to-top {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 1042;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease;
}

.scroll-to-top.is-visible {
  opacity: 1;
  visibility: visible;
}

.scroll-to-top a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background-color: rgba(33, 37, 41, 0.5);
  color: #fff;
}

@media (min-width: 992px) {
  .scroll-to-top {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .profile {
    animation: none;
    opacity: 1;
  }
}