:root {
  --background-colour: grey;
  /* body background colour */
  --background-colour-alt: white;
  /* card &c background colour */
  --second-background-colour: black;
  --second-background-colour-alt: #ccc;

  --first-text-colour: white;
  /* header text colour */
  --first-text-colour-alt: #ccc;
  /* muted text colour */
  --second-text-colour: black;
  /* body text colour */

  --border-colour: #ccc;

  --major-border-radius: 8px;
  --minor-border-radius: 4px;

  --image-box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);

}

/***************/
/*** general ***/
/***************/

html,
body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: var(--background-colour);
}

p,
small {
  padding: 1rem;
}

/**************/
/*** header ***/
/**************/

header {
  color: var(--first-text-colour);
  padding: 2rem;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: 3rem;
  letter-spacing: 2px;
}

header .subtitle {
  margin: 0.5rem 0 2rem;
  font-weight: 300;
  font-size: 1.5rem;
}

header a {
  text-decoration: none;
  color: inherit;
  display: inline-block;
  text-align: center;
}

/***************/
/*** nav bar ***/
/***************/

nav button,
nav a {
  color: var(--second-text-colour);
  border: none;
  background: transparent;
  border-radius: var(--minor-border-radius);
  padding: 0.5rem 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: block;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

nav ul {
  list-style-type: none;
  margin: auto;
  padding: 0;
  background-color: var(--background-colour);
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.nav-item > a,
.nav-item > button {
  display: inline-flex;
  align-items: center;
  vertical-align: middle;
  text-decoration: none;
  font: inherit;

}

ul li {
  float: left;
}

/**
TODO
theres no need for both buttons and anchors
change all the buttons to anchors
since you do now need an anchor (for the back)
BUTTTT how will this effect the js?
*/

nav button:focus,
nav button:active,
nav button:hover,
nav a:focus,
nav a:active,
nav a:hover {
  color: var(--first-text-colour);
  background-color: #111111;
  font-weight: bold;
}

button:disabled {
  opacity: 0.2;
  /* cursor: not-allowed; */
  color: var(--second-background-colour-alt);
}

/************/
/*** main ***/
/************/

main {
  flex: 1;
}

.about .content,
.works .content {
  width: 80vw;
  margin: auto;
  padding: 2rem;
}

.about .content {
  width: 60vw;
  padding: 1em;
  background-color: var(--background-colour-alt);
  border-radius: var(--major-border-radius);
  margin: 2rem auto;
}

/*** sections ***/

section.hidden {
  display: none;
}

/*************/
/*** cards ***/
/*************/

.deck {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  padding: 0;
  list-style: none;
  margin: 2rem 0;
}

.card {
  background: var(--background-colour-alt);
  border-radius: var(--major-border-radius);
  overflow: hidden;
  box-shadow: var(--image-box-shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.card:hover,
.card:focus,
.card:active {
  transform: translateY(-5px);
  box-shadow: var(--image-box-shadow);
}

.card a {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  height: 100%;
}

.card a:hover,
.card a:focus,
.card a:active {
  transform: translateY(-5px);
}

.card img {
  width: 100%;
  display: block;
  object-fit: cover;
}

.card .container {
  padding: 1rem;
  flex: 1;
  text-align: center;
}

.card h3 {
  margin: 0.5rem;
  font-size: 1.2rem;
}

.card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.4;
}

/********************/
/*** contact form ***/
/********************/

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: 100%;
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

.contact {
  padding: 3rem 1rem;
  background: var(--background-colour);
  display: flex;
  justify-content: center;
  align-items: center;
}

.contact .content {
  max-width: 600px;
  width: 100%;
  background: var(--background-colour-alt);
  padding: 2rem;
  border-radius: var(--major-border-radius);
  box-shadow: var(--image-box-shadow);
}

.contact form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact fieldset {
  border: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact label {
  font-weight: bold;
  margin-bottom: 0.25rem;
}

.contact input[type="text"],
.contact input[type="email"],
.contact input[type="submit"],
.contact textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-colour);
  border-radius: var(--minor-border-radius);
  font-size: 1rem;
}

.contact textarea {
  resize: vertical;
  min-height: 120px;
}

.contact input[type="submit"] {
  background: black;
  color: var(--first-text-colour);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
}

.contact input[type="submit"]:hover {
  color: var(--second-text-colour);
  background: var(--background-colour-alt);
  font-weight: bold;
  transform: scale(0.98);
}

/*
input:invalid, textarea:invalid {
}

input:invalid:required, textarea:invalid:required {
}

input:valid, textarea:valid {
}
*/

/*** form feedback ***/

.feedback {
  margin-top: 1em;
  padding: 0.75em 1em;
  border-radius: 6px;
  font-weight: 500;
  display: none;
  opacity: 0;
  transition: opacity 1s ease;
}

.feedback.show {
  display: block;
  opacity: 1;
}

.feedback.success {
  display: block;
  background-color: #e6ffed;
  border: 1px solid #2ecc71;
  color: #2e7d32;
}

.feedback.error {
  display: block;
  background-color: #ffe6e6;
  border: 1px solid #e74c3c;
  color: #b71c1c;
}

/*******************/
/*** hero images ***/
/*******************/

.hero-image {
  height: 50vh;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  position: relative;
}

.hero-text {
  text-align: center;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--first-text-colour);
}

.about .hero-image {
  background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url("../../media/hero-images/00003-1439011933.png");
}

.works .hero-image {
  background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url("../../media/hero-images/00004-3490294550.png");
}

.contact .hero-image {
  background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url("../../media/hero-images/00005-3917924116.png");
}

.hero-text {
  margin: 0;
  font-size: 2rem;
  letter-spacing: 2px;
}

/**************/
/*** footer ***/
/**************/

footer {
  width: 100%;
  text-align: center;
  padding-top: 1rem;
  margin-top: 1rem;
}

/********************/
/*** work details ***/
/********************/

.work-details {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 1rem;
}

main h3 {
  font-size: 2rem;
  margin-bottom: 2rem;
  text-align: center;
  letter-spacing: 2px;
}

.main-image {
  float: left;
  width: 40%;
  margin: 0 2rem 1rem 0;
}

.main-image img {
  width: 100%;
  height: auto;
  border-radius: var(--major-border-radius);
  box-shadow: var(--image-box-shadow);
}

main p {
  font-size: 1.1rem;
  line-height: 1.6;
  margin: auto;
}

/* gallery */

.gallery {
  clear: both;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 1rem;
}

.main-image img,
.gallery img {
  width: 100%;
  height: auto;
  border-radius: 6px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.main-image img:hover,
.gallery img:hover {
  transform: scale(1.01);
  box-shadow: var(--image-box-shadow);
}

/************/
/* lightbox */
/************/

.lightbox {
  display: none;
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  justify-content: center;
  align-items: center;
}

.lightbox img {
  max-width: 90%;
  max-height: 80%;
  border-radius: 8px;
  box-shadow: var(--image-box-shadow);
}

/* lightbox buttons */

.lightbox .close {
  position: absolute;
  top: 20px;
  right: 30px;
  font-size: 2rem;
  font-weight: bold;
  color: var(--first-text-colour);
  cursor: pointer;
}

.lightbox .prev,
.lightbox .next {
  position: absolute;
  top: 50%;
  font-size: 2rem;
  color: var(--first-text-colour);
  cursor: pointer;
  user-select: none;
  transform: translateY(-50%);
  padding: 0 1rem;
}

.lightbox .prev {
  left: 20px;
}

.lightbox .next {
  right: 20px;
}

.lightbox .close:hover,
.lightbox .prev:hover,
.lightbox .next:hover {
  color: var(--first-text-colour-alt);
}

/*********************/
/*** media queries ***/
/*********************/

@media (max-width: 768px) {
  .main-image {
    float: none;
    width: 100%;
    margin: 0 auto 1rem auto;
  }

  main p {
    text-align: justify;
  }
}