/* =========================================================
   SKYWAY AIR TRAVEL CASE STUDY
   Anne Amor Portfolio
========================================================= */


/* =========================================================
   COLOR SYSTEM
========================================================= */

.skyway-case-study {
  --skyway-purple: #5b0878;
  --skyway-deep-purple: #35176f;
  --skyway-navy: #273f78;
  --skyway-teal: #167983;
  --skyway-bright-teal: #37e6df;

  --skyway-dark: #111c29;
  --skyway-text: #24272d;
  --skyway-muted: #626a78;

  --skyway-background: #f3f6fa;
  --skyway-soft: #eef4f6;
  --skyway-white: #ffffff;

  --skyway-border: #d9e0e8;

  --skyway-gradient:
    linear-gradient(
      115deg,
      #5b0878 0%,
      #34216f 42%,
      #29467b 70%,
      #167983 100%
    );

  color: var(--skyway-text);
  background: var(--skyway-white);
}


/* =========================================================
   GENERAL CASE STUDY
========================================================= */

.skyway-case-study main {
  overflow: hidden;
}

.skyway-case-study .container {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.skyway-case-study h1,
.skyway-case-study h2,
.skyway-case-study h3 {
  line-height: 1.12;
}

.skyway-case-study h2 {
  margin-top: 0;
  margin-bottom: 22px;
  font-size: clamp(2rem, 4vw, 3.3rem);
}

.skyway-case-study h3 {
  margin-top: 0;
}

.skyway-case-study p {
  line-height: 1.75;
}

.skyway-case-study .section-label {
  margin-bottom: 12px;
  color: var(--skyway-teal);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.skyway-case-study .section-intro {
  max-width: 780px;
  margin-bottom: 45px;
  color: var(--skyway-muted);
  font-size: 1.05rem;
}


/* =========================================================
   HERO
========================================================= */

.skyway-hero {
  position: relative;
  padding: 80px 0 95px;
  color: white;
  background: var(--skyway-gradient);
}

.skyway-hero::after {
  content: "";
  position: absolute;
  right: -100px;
  bottom: -180px;

  width: 450px;
  height: 450px;

  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
}

.skyway-hero::before {
  content: "";
  position: absolute;
  right: 100px;
  bottom: -230px;

  width: 500px;
  height: 500px;

  border: 1px solid rgba(55, 230, 223, 0.13);
  border-radius: 50%;
}

.skyway-hero .container {
  position: relative;
  z-index: 2;
}

.skyway-hero .back-link {
  display: inline-block;
  margin-bottom: 55px;

  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
  text-decoration: none;
}

.skyway-hero .back-link:hover,
.skyway-hero .back-link:focus-visible {
  color: white;
  text-decoration: underline;
}

.skyway-hero .eyebrow {
  margin-bottom: 16px;
  color: var(--skyway-bright-teal);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.skyway-hero h1 {
  max-width: 850px;
  margin: 0 0 25px;

  color: white;
  font-size: clamp(3rem, 8vw, 6.5rem);
  letter-spacing: -0.045em;
}

.skyway-intro {
  max-width: 800px;
  margin-bottom: 35px;

  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
}

.skyway-hero .case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;

  margin: 0;
  padding: 0;

  list-style: none;
}

.skyway-hero .case-tags li {
  padding: 8px 15px;

  color: white;
  font-size: 0.84rem;
  font-weight: 700;

  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 100px;

  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(4px);
}


/* =========================================================
   OVERVIEW
========================================================= */

.skyway-overview {
  padding: 100px 0;
}

.skyway-overview-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  gap: 75px;
  align-items: start;
}

.skyway-overview-grid > div > p:not(.section-label) {
  max-width: 700px;
}

.skyway-overview h2 {
  max-width: 700px;
}


/* =========================================================
   PROJECT FACTS
========================================================= */

.skyway-case-study .project-facts {
  overflow: hidden;

  border: 1px solid var(--skyway-border);
  border-radius: 20px;

  background: white;

  box-shadow: 0 18px 50px rgba(22, 32, 50, 0.09);
}

.skyway-case-study .project-facts h2 {
  margin: 0;
  padding: 22px 26px;

  color: white;
  font-size: 1.1rem;

  background: var(--skyway-gradient);
}

.skyway-case-study .project-facts dl {
  margin: 0;
}

.skyway-case-study .project-facts dl > div {
  padding: 18px 26px;
  border-bottom: 1px solid var(--skyway-border);
}

.skyway-case-study .project-facts dl > div:last-child {
  border-bottom: 0;
}

.skyway-case-study .project-facts dt {
  margin-bottom: 5px;

  color: var(--skyway-teal);
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.skyway-case-study .project-facts dd {
  margin: 0;
  line-height: 1.55;
}


/* =========================================================
   STANDARD SECTIONS
========================================================= */

.skyway-section {
  padding: 100px 0;
}

.skyway-soft {
  background: var(--skyway-soft);
}

.skyway-dark {
  color: rgba(255, 255, 255, 0.87);
  background: var(--skyway-dark);
}

.skyway-dark h2,
.skyway-dark h3 {
  color: white;
}

.skyway-dark .section-label {
  color: var(--skyway-bright-teal);
}


/* =========================================================
   TWO COLUMN
========================================================= */

.skyway-case-study .two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 80px;
  align-items: start;
}


/* =========================================================
   FEATURE LIST
========================================================= */

.skyway-case-study .feature-list {
  display: grid;
  gap: 15px;

  margin: 0;
  padding: 0;

  list-style: none;
}

.skyway-case-study .feature-list li {
  position: relative;

  padding: 17px 20px 17px 48px;

  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;

  background: rgba(255, 255, 255, 0.045);
}

.skyway-case-study .feature-list li::before {
  content: "✓";

  position: absolute;
  top: 16px;
  left: 18px;

  color: var(--skyway-bright-teal);
  font-weight: 900;
}


/* =========================================================
   CURRENT DEVELOPMENT GRID
========================================================= */

.skyway-current-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}

.skyway-current-grid article {
  position: relative;

  min-height: 250px;
  padding: 30px 26px;

  border: 1px solid var(--skyway-border);
  border-radius: 18px;

  background: white;

  box-shadow: 0 12px 35px rgba(27, 42, 64, 0.07);
}

.skyway-current-grid article::before {
  content: "";

  position: absolute;
  top: 0;
  right: 0;
  left: 0;

  height: 5px;

  border-radius: 18px 18px 0 0;

  background: var(--skyway-gradient);
}

.skyway-current-grid article > span {
  display: block;
  margin-bottom: 35px;

  color: var(--skyway-teal);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.skyway-current-grid h3 {
  margin-bottom: 12px;
  color: var(--skyway-deep-purple);
  font-size: 1.15rem;
}

.skyway-current-grid p {
  margin-bottom: 0;
  color: var(--skyway-muted);
  font-size: 0.94rem;
}


/* =========================================================
   INTERFACE SCREENSHOT
========================================================= */

.skyway-interface-panel {
  margin: 45px 0 0;
}

.skyway-interface-panel img {
  display: block;

  width: 100%;
  height: auto;

  border: 1px solid var(--skyway-border);
  border-radius: 18px;

  background: white;

  box-shadow: 0 25px 65px rgba(24, 39, 58, 0.16);
}

.skyway-interface-panel figcaption {
  max-width: 720px;
  margin: 18px auto 0;

  color: var(--skyway-muted);
  font-size: 0.9rem;
  text-align: center;
}


/* =========================================================
   APPLICATION FLOW
========================================================= */

.skyway-flow {
  max-width: 850px;
  margin: 55px auto 0;
}

.skyway-flow-step {
  display: grid;
  grid-template-columns: 65px 1fr;
  gap: 25px;
  align-items: start;

  padding: 28px 32px;

  border: 1px solid var(--skyway-border);
  border-radius: 18px;

  background: white;

  box-shadow: 0 10px 30px rgba(30, 44, 65, 0.06);
}

.skyway-flow-step > span {
  display: grid;
  place-items: center;

  width: 55px;
  height: 55px;

  color: white;
  font-weight: 900;

  border-radius: 50%;

  background: var(--skyway-gradient);
}

.skyway-flow-step h3 {
  margin-bottom: 8px;
  color: var(--skyway-deep-purple);
}

.skyway-flow-step p {
  margin: 0;
  color: var(--skyway-muted);
}

.skyway-flow-arrow {
  padding: 10px 0;

  color: var(--skyway-teal);
  font-size: 1.8rem;
  font-weight: 900;
  text-align: center;
}


/* =========================================================
   TECHNICAL ARCHITECTURE
========================================================= */

.skyway-tech-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;

  margin-top: 45px;
}

.skyway-tech-grid article {
  min-height: 230px;
  padding: 28px;

  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 17px;

  background: rgba(255, 255, 255, 0.045);
}

.skyway-tech-number {
  display: block;
  margin-bottom: 30px;

  color: var(--skyway-bright-teal);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.skyway-tech-grid h3 {
  margin-bottom: 12px;
  font-size: 1.18rem;
}

.skyway-tech-grid p {
  margin: 0;

  color: rgba(255, 255, 255, 0.72);
  font-size: 0.94rem;
}


/* =========================================================
   DEVELOPMENT ROADMAP
========================================================= */

.skyway-roadmap {
  position: relative;

  max-width: 850px;
  margin: 55px auto 0;
}

.skyway-roadmap::before {
  content: "";

  position: absolute;
  top: 35px;
  bottom: 35px;
  left: 34px;

  width: 2px;

  background: var(--skyway-border);
}

.skyway-roadmap-item {
  position: relative;

  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 28px;

  margin-bottom: 35px;
}

.skyway-roadmap-item:last-child {
  margin-bottom: 0;
}

.skyway-roadmap-marker {
  position: relative;
  z-index: 2;

  display: grid;
  place-items: center;

  width: 70px;
  height: 70px;

  color: var(--skyway-muted);
  font-weight: 900;

  border: 2px solid var(--skyway-border);
  border-radius: 50%;

  background: white;
}

.skyway-roadmap-item > div:last-child {
  padding: 25px 30px;

  border: 1px solid var(--skyway-border);
  border-radius: 16px;

  background: white;
}

.skyway-roadmap-item.complete .skyway-roadmap-marker {
  color: white;
  border-color: var(--skyway-teal);
  background: var(--skyway-teal);
}

.skyway-roadmap-item.current .skyway-roadmap-marker {
  color: white;
  border-color: var(--skyway-purple);
  background: var(--skyway-gradient);

  box-shadow: 0 0 0 7px rgba(91, 8, 120, 0.1);
}

.skyway-roadmap-item.current > div:last-child {
  border-color: rgba(91, 8, 120, 0.28);
  box-shadow: 0 12px 35px rgba(91, 8, 120, 0.08);
}

.roadmap-status {
  margin: 0 0 6px;

  color: var(--skyway-teal);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.skyway-roadmap-item h3 {
  margin-bottom: 8px;
  color: var(--skyway-deep-purple);
}

.skyway-roadmap-item p:last-child {
  margin-bottom: 0;
  color: var(--skyway-muted);
}


/* =========================================================
   FINAL PROJECT REQUIREMENTS
========================================================= */

.skyway-requirements-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;

  margin-top: 45px;
}

.skyway-requirements-grid article {
  position: relative;

  padding: 30px;

  border: 1px solid var(--skyway-border);
  border-radius: 16px;

  background: white;
}

.skyway-requirements-grid article::after {
  content: "";

  position: absolute;
  right: 25px;
  bottom: 22px;

  width: 28px;
  height: 4px;

  border-radius: 100px;

  background: var(--skyway-teal);
}

.skyway-requirements-grid h3 {
  margin-bottom: 10px;
  color: var(--skyway-deep-purple);
}

.skyway-requirements-grid p {
  margin: 0 0 25px;
  color: var(--skyway-muted);
}


/* =========================================================
   LEARNING SECTION
========================================================= */

.skyway-learning-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 80px;
  align-items: start;
}

.skyway-learning-grid p:not(.section-label) {
  color: rgba(255, 255, 255, 0.75);
}


/* =========================================================
   OUTCOME
========================================================= */

.skyway-case-study .outcome-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 80px;

  padding-top: 20px;
  padding-bottom: 20px;
}

.skyway-case-study .outcome-panel p {
  color: var(--skyway-muted);
}

.skyway-status {
  display: inline-block;

  margin-top: 15px !important;
  padding: 9px 15px;

  color: var(--skyway-deep-purple) !important;
  font-size: 0.82rem;
  font-weight: 800;

  border: 1px solid rgba(91, 8, 120, 0.2);
  border-radius: 100px;

  background: rgba(91, 8, 120, 0.06);
}


/* =========================================================
   NEXT PROJECT / CTA
========================================================= */

.skyway-next {
  padding: 90px 0;

  color: white;
  text-align: center;

  background: var(--skyway-gradient);
}

.skyway-next p {
  margin-bottom: 10px;

  color: var(--skyway-bright-teal);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.skyway-next h2 {
  max-width: 650px;
  margin: 0 auto 30px;

  color: white;
}

.skyway-next .button {
  display: inline-block;

  padding: 13px 25px;

  color: var(--skyway-deep-purple);
  font-weight: 800;
  text-decoration: none;

  border: 2px solid white;
  border-radius: 100px;

  background: white;

  transition:
    transform 0.2s ease,
    background 0.2s ease,
    color 0.2s ease;
}

.skyway-next .button:hover,
.skyway-next .button:focus-visible {
  color: white;
  background: transparent;
  transform: translateY(-2px);
}


/* =========================================================
   ACCESSIBILITY / FOCUS
========================================================= */

.skyway-case-study a:focus-visible {
  outline: 3px solid var(--skyway-bright-teal);
  outline-offset: 4px;
}


/* =========================================================
   TABLET
========================================================= */

@media (max-width: 950px) {

  .skyway-overview-grid,
  .skyway-case-study .two-column,
  .skyway-learning-grid,
  .skyway-case-study .outcome-panel {
    grid-template-columns: 1fr;
    gap: 50px;
  }

  .skyway-current-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .skyway-tech-grid,
  .skyway-requirements-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

}


/* =========================================================
   MOBILE
========================================================= */

@media (max-width: 650px) {

  .skyway-case-study .container {
    width: min(100% - 28px, 1120px);
  }


  /* HERO */

  .skyway-hero {
    padding: 55px 0 70px;
  }

  .skyway-hero .back-link {
    margin-bottom: 38px;
  }

  .skyway-hero h1 {
    font-size: clamp(2.8rem, 15vw, 4.4rem);
  }

  .skyway-intro {
    font-size: 1.05rem;
  }


  /* SECTIONS */

  .skyway-overview,
  .skyway-section {
    padding: 70px 0;
  }


  /* CURRENT */

  .skyway-current-grid {
    grid-template-columns: 1fr;
  }

  .skyway-current-grid article {
    min-height: auto;
  }


  /* TECH */

  .skyway-tech-grid,
  .skyway-requirements-grid {
    grid-template-columns: 1fr;
  }


  /* FLOW */

  .skyway-flow-step {
    grid-template-columns: 50px 1fr;
    gap: 17px;

    padding: 23px 20px;
  }

  .skyway-flow-step > span {
    width: 45px;
    height: 45px;
  }


  /* ROADMAP */

  .skyway-roadmap::before {
    left: 24px;
  }

  .skyway-roadmap-item {
    grid-template-columns: 50px 1fr;
    gap: 17px;
  }

  .skyway-roadmap-marker {
    width: 50px;
    height: 50px;
    font-size: 0.75rem;
  }

  .skyway-roadmap-item > div:last-child {
    padding: 21px;
  }


  /* SCREENSHOT */

  .skyway-interface-panel img {
    border-radius: 12px;
  }

}


/* =========================================================
   REDUCED MOTION
========================================================= */

@media (prefers-reduced-motion: reduce) {

  .skyway-next .button {
    transition: none;
  }

}