/* =============
  Variables
============= 
*/

:root {
  --primaryColor: rgb(241, 80, 37);
  --mainBlack: #222;
  --mainWhite: #fff;
  --offWhite: #f7f7f7;
  --darkGrey: #afafaf;
  --mainTransition: all 0.3s linear;
  --mainSpacing: 0.2rem;
}

/* 
=============
  Reset
============= 
*/

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Fira Code', monospace;
  color: var(--mainBlack);
  background: var(--mainWhite);
  line-height: 1.5;
}

a {
  text-decoration: none;
}

img {
  width: 100%;
  display: block;
}

h1,
h2,
h3 {
  text-transform: capitalize;
  letter-spacing: var(--mainSpacing);
  margin-bottom: 1.25rem;
}

h1 {
  font-size: 3rem;
}

h2 {
  margin-bottom: 0;
}

p {
  font-weight: 300;
  font-size: 0.7rem;
  line-height: 2;
}

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  text-transform: capitalize;
  border: 3px solid var(--primaryColor);
  color: var(--primaryColor);
  margin: 3rem;
  transition: var(--mainTransition);
}

.btn:hover {
  background: var(--primaryColor);
  color: var(--mainWhite);
}

/* 
=============
  Navbar 
============= 
*/

.main-navbar {
  background: var(--darkGrey);
  padding: 0 2rem;
}

.main-navbar li {
  list-style-type: none;
}

.main-navbar ul {
  max-width: 1170px;
  margin: 0 auto;
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: center;
  gap: 0;
}

.main-navbar a {
  text-transform: capitalize;
  display: block;
  padding: 1rem 1.2rem;
  color: var(--primaryColor);
  letter-spacing: var(--mainSpacing);
  transition: var(--mainTransition);
  white-space: nowrap;
  font-size: 0.85rem;
}

.main-navbar a:hover {
  color: var(--mainBlack);
}

.main-navbar a.active-link {
  color: var(--mainBlack);
  font-weight: 700;
  border-bottom: 2px solid var(--primaryColor);
}

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

.hero-header {
  min-height: 100vh;
  background: var(--primaryColor);
  color: var(--offWhite);
  display: grid;
  align-items: center;
  justify-content: center;
}

.hero-banner p {
  width: 80%;
  max-width: 560px;
  font-size: 1rem;
}

@media screen and (max-width: 600px) {
  .hero-banner {
    padding: 0 3rem;
  }
}

@media screen and (min-width: 768px) {
  .hero-header {
    background: linear-gradient(
        rgba(241, 80, 37, 0.55),
        rgba(241, 80, 37, 0.55)
      ),
      url('./images/image-2.jpeg') center/cover fixed no-repeat;
  }
}

/* 
=============
  Cards 
============= 
*/

.title {
  text-align: center;
}

.cards {
  padding: 4rem 0;
}
.cards-center {
  width: 80vw;
  max-width: 1170px;
  margin: 2rem auto;
}

.card {
  margin-bottom: 3rem;
  cursor: pointer;
  transition: var(--mainTransition);
  box-shadow: 0px 2px 3px rgba(0, 0, 0, 0.2);
}

.card:hover {
  transform: scale(1.05);
  box-shadow: 0px 3px 3px rgba(0, 0, 0, 0.3);
}

.card-info {
  padding: 1rem;
}

.card-footer {
  background: var(--primaryColor);
  padding: 0.5rem 1rem;
  display: grid;
  justify-items: center;
  grid-template-columns: repeat(4, 1fr);
}

span {
  transition: var(--mainTransition);
  cursor: pointer;
  font-size: 1.2rem;
}

span:hover {
  color: var(--offWhite);
}

/* @media screen and (min-width: 768px) {
  .cards-center {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-column-gap: 2rem;
  }
}

@media screen and (min-width: 1170px) {
  .cards-center {
    grid-template-columns: repeat(3, 1fr);
  }
} */

/* (1170 - 64)/3 = 368px (three column layout)*/
/* (1170 - 64)/3 = 368px (four column layout)*/
.cards-center {
  display: grid;
  grid-column-gap: 2rem;
  grid-template-columns: repeat(auto-fill, minmax(368px, 1fr));
  grid-template-columns: repeat(auto-fill, minmax(268.5px, 1fr));
}

/* 
=============
  Tiles
============= 
*/

.tile {
  padding: 4rem 0;
}

.tiles-center {
  width: 90vw;
  max-width: 1170px;
  margin: 2rem auto;
  display: grid;
  grid-row-gap: 2rem;
}

@media screen and (min-width: 768px) {
  .tiles-center {
    grid-template-columns: 1fr 1fr;
    grid-column-gap: 2rem;
  }
}

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

@media screen and (min-width: 1170px) {
  .tiles-center {
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(5, 200px);
    grid-template-areas: 'a a a b' 'a a a c' 'd d d d' 'e f f f' 'e g h i';
  }

  .tiles img {
    height: 100%;
    object-fit: cover;
  }

  .tile-1 {
    grid-area: a;
  }

  .tile-2 {
    grid-area: b;
  }

  .tile-3 {
    grid-area: c;
  }

  .tile-4 {
    grid-area: d;
  }

  .tile-5 {
    grid-area: e;
  }

  .tile-6 {
    grid-area: f;
  }

  .tile-7 {
    grid-area: g;
  }

  .tile-8 {
    grid-area: h;
  }

  .tile-8 {
    grid-area: i;
  }
}

/* 

=======================
  Layout
=======================
 */

.header {
  background: var(--primaryColor);
  color: var(--mainWhite);
  text-align: center;
  padding: 0.5rem 0;
}

.navbar {
  background: var(--darkGrey);
}

.navbar li {
  list-style-type: none;
}

.navbar a {
  padding: 1rem;
  display: inline-block;
  text-transform: capitalize;
  letter-spacing: var(--mainSpacing);
  color: var(--mainBlack);
  font-size: 1.2rem;
  transition: var(--mainTransition);
}

.navbar a:hover {
  color: var(--mainWhite);
}

.content {
  padding: 2rem;
}

.content p {
  font-size: 1rem;
}

.sidebar {
  background: var(--primaryColor);
  padding: 1rem 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  text-align: center;
  justify-items: center;
}

.footer {
  background: var(--mainBlack);
  color: var(--mainWhite);
  text-align: center;
  text-transform: capitalize;
  padding: 0.5rem 0;
}

.footer p {
  font-size: 1.2rem;
}

.main {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto auto 1fr auto auto;
}

@media screen and (min-width: 768px) {
  .navbar ul {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    justify-items: center;
  }
}

@media screen and (min-width: 1170px) {
  .main {
    grid-template-columns: [start] 200px [col-1-end] 1fr [col-2-end] 50px [end];
    grid-template-rows: [start] auto [row-1-end] 1fr [row-1-end] auto [end];
  }

  .header {
    grid-column: start/end;
    grid-row: start/row-1-end;
  }

  .navbar {
    grid-column: start/col-1-end;
    grid-row: row-1-end/row-2-end;
  }

  .content {
    grid-column: col-1-end/end;
    grid-row: row-1-end/row-2-end;
  }

  .sidebar {
    grid-column: col-2-end/end;
    grid-row: row-1-end/row-2-end;

    grid-template-columns: 1fr;
    align-items: center;
    min-height: 100%;
  }

  .footer {
    grid-column: start/end;
    grid-row: row-2-end/end;
  }

  .navbar ul {
    grid-template-columns: 1fr;
    align-items: center;
    min-height: 100%;
  }
}


/* 
=============
  Section title subtitle
============= 
*/

.title-sub {
  font-size: 0.85rem;
  color: #666;
  margin-top: -0.75rem;
  margin-bottom: 1.5rem;
}

.title-sub code {
  background: #f0f0f0;
  padding: 0.1rem 0.3rem;
  border-radius: 3px;
  font-family: 'Fira Code', monospace;
  color: var(--primaryColor);
}

/* 
=============
  Index Landing Page
============= 
*/

.index-hero {
  background: linear-gradient(
      rgba(241, 80, 37, 0.82),
      rgba(241, 80, 37, 0.82)
    ),
    url('./images/image-2.jpeg') center/cover no-repeat fixed;
  min-height: 40vh;
  display: grid;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--mainWhite);
}

.index-hero-content {
  max-width: 640px;
}

.index-hero-content h1 {
  font-size: clamp(1.8rem, 5vw, 3rem);
  margin-bottom: 1rem;
  color: var(--mainWhite);
}

.index-hero-content p {
  font-size: clamp(0.85rem, 2vw, 1rem);
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.8;
}

/* demo cards grid */
.index-demos {
  padding: 4rem 0;
  background: var(--offWhite);
}

.index-demos-center {
  width: 90vw;
  max-width: 1170px;
  margin: 0 auto;
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.demo-card {
  background: var(--mainWhite);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: var(--mainTransition);
  display: flex;
  flex-direction: column;
  color: var(--mainBlack);
}

.demo-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* coloured top banner per card */
.demo-card-img {
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--mainWhite);
}

.demo-img-hero    { background: linear-gradient(135deg, #f15025, #ff8c5a); }
.demo-img-cards   { background: linear-gradient(135deg, #c0392b, #e67e22); }
.demo-img-tiles   { background: linear-gradient(135deg, #922b21, #f15025); }
.demo-img-layout  { background: linear-gradient(135deg, #784212, #ca6f1e); }

.demo-icon {
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.3));
}

.demo-card-body {
  padding: 1.25rem 1.5rem 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.demo-card-body h3 {
  font-size: 1.1rem;
  margin-bottom: 0;
  color: var(--mainBlack);
  text-transform: capitalize;
}

.demo-card-body p {
  font-size: 0.75rem;
  line-height: 1.8;
  flex: 1;
}

.demo-card-body code {
  background: #f0f0f0;
  padding: 0.1rem 0.3rem;
  border-radius: 3px;
  font-size: 0.7rem;
  color: var(--primaryColor);
}

.demo-tag {
  font-size: 0.65rem;
  color: var(--mainWhite);
  background: var(--primaryColor);
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  align-self: flex-start;
  letter-spacing: 0.05rem;
  text-transform: uppercase;
}

/* index footer */
.index-footer {
  background: var(--mainBlack);
  text-align: center;
  padding: 1.5rem;
}

.index-footer p {
  color: var(--darkGrey);
  font-size: 0.75rem;
  margin: 0;
}