/* --- Global Variables & Styles --- */
:root {
  --bg-color: #212121;
  --surface-color: #323232;
  --primary-color: #dd6456;
  --secondary-color: #ffb74d;
  --on-surface-color: #f5f5f5;
  --on-surface-secondary-color: #bdbdbd;
  --border-color: #424242;

  --font-family-heading: "Press Start 2P", cursive;
  --font-family-body: "Share Tech Mono", monospace;

  --transition-speed: 0.1s;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: none;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-color);
  color: var(--on-surface-color);
  font-family: var(--font-family-body);
  line-height: 1.8;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

p {
  margin-bottom: 1rem;
  max-width: 75ch;
}

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

.repo-card__link,
.contact__link {
  color: var(--secondary-color);
}

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

/* --- Header & Navigation --- */
.header {
  background-color: rgba(33, 33, 33, 0.8);
  backdrop-filter: blur(5px);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 100;
  border-bottom: 2px solid var(--border-color);
}

.main-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  font-family: var(--font-family-heading);
  font-size: 1.2rem;
  color: white;
}

.main-nav ul {
  display: flex;
  list-style: none;
}

.main-nav ul li {
  margin-left: 25px;
}

.main-nav ul li a {
  font-weight: 500;
  color: var(--on-surface-color);
  padding: 5px;
}

.main-nav ul li a:hover {
  background-color: var(--primary-color);
  color: var(--bg-color);
}

/* --- Sections --- */
section {
  padding: 100px 0;
}

.hero-section {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  background: linear-gradient(rgba(33, 33, 33, 0.7), rgba(33, 33, 33, 1)),
    url("https://placehold.co/1920x1080/212121/212121?text=") no-repeat center
      center/cover;
  position: relative;
  overflow: hidden;
}

.hero-section .container {
  position: relative;
  z-index: 1;
}

.hero__icon {
  position: absolute;
  opacity: 1;
  user-select: none;
  z-index: 0;
  height: auto;
}

.hero__icon--korgi {
  top: 15%;
  left: 20%;
  width: 100px;
  transform: rotate(-20deg);
}

.hero__icon--photo {
  top: 20%;
  right: 15%;
  width: 100px;
  transform: rotate(15deg);
}

.hero__icon--v60 {
  bottom: 15%;
  left: 30%;
  width: 150px;
  transform: rotate(5deg);
}

.hero__title {
  font-family: var(--font-family-heading);
  color: white;
  margin-bottom: 1.5rem;
  line-height: 1.2;
  text-transform: uppercase;
  font-size: 2rem;
}

.hero__subtitle {
  font-size: 1.1rem;
  color: var(--on-surface-secondary-color);
  margin-bottom: 2.5rem;
}

.section-title {
  font-family: var(--font-family-heading);
  color: white;
  line-height: 1.2;
  text-transform: uppercase;
  font-size: 1.5rem;
  border-bottom: 4px solid var(--primary-color);
  display: inline-block;
  padding-bottom: 0.5rem;
  margin-bottom: 2.5rem;
}

.cta-button {
  background-color: var(--primary-color);
  color: var(--bg-color);
  padding: 15px 30px;
  font-family: var(--font-family-heading);
  font-size: 0.9rem;
  border: 2px solid var(--border-color);
  box-shadow: 4px 4px 0px var(--border-color);
  transition: transform var(--transition-speed),
    box-shadow var(--transition-speed);
}

.cta-button:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0px var(--border-color);
  color: var(--bg-color);
}

.content-section {
  background-color: var(--surface-color);
}

.section-divider {
  border: 0;
  height: 4px;
  background: var(--border-color);
  margin: 3rem 0;
}

.about__text {
  /* Override the global 'p' max-width to fill the container */
  max-width: none;
}

.showcase-section {
  background-color: var(--bg-color);
}

.showcase-item {
  background-color: var(--surface-color);
  padding: 2rem;
  margin-bottom: 3rem;
  border: 2px solid var(--border-color);
}

.showcase-item__title {
  font-family: var(--font-family-heading);
  color: var(--secondary-color);
  margin-bottom: 1.5rem;
  line-height: 1.2;
  text-transform: uppercase;
  font-size: 1.2rem;
}

.showcase__intro {
  text-align: left;
  margin-bottom: 3rem;
  color: var(--on-surface-secondary-color);
}

/* --- Demo 1: GitHub Repositories --- */
.repo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.repo-card {
  background-color: var(--bg-color);
  padding: 1.5rem;
  border: 2px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.repo-card__title {
  font-family: var(--font-family-body);
  font-size: 1.2rem;
  text-transform: none;
  color: var(--secondary-color);
  margin-bottom: 0.5rem;
  cursor: pointer;
  word-break: break-word;
  /* Truncate to 2 lines by default */
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  text-overflow: ellipsis;
}

.repo-card__title--expanded {
  -webkit-line-clamp: unset;
}

.repo-card__description {
  font-size: 1rem;
  color: var(--on-surface-secondary-color);
  flex-grow: 1;
  margin-bottom: 1rem;
}

.repo-card__link {
  font-weight: 500;
  align-self: flex-start;
}

.loader {
  width: 50px;
  height: 50px;
  border: 5px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 2rem auto;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* --- Showcase Form Components (Shared by To-Do & Weather) --- */
.showcase-form {
  display: flex;
  align-items: center;
  gap: 10px;
}

.showcase-form__input {
  flex-grow: 1;
  padding: 10px;
  border: 2px solid var(--border-color);
  background-color: var(--surface-color);
  color: var(--on-surface-color);
  font-family: var(--font-family-body);
  font-size: 1rem;
}

.showcase-form__button {
  flex-shrink: 0;
  padding: 15px 30px;
  background-color: var(--primary-color);
  color: var(--bg-color);
  border: 2px solid var(--border-color);
  cursor: pointer;
  font-family: var(--font-family-heading);
  font-size: 0.9rem;
  box-shadow: 4px 4px 0px var(--border-color);
  transition: transform var(--transition-speed),
    box-shadow var(--transition-speed);
}

.showcase-form__button:hover {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0px var(--border-color);
  color: var(--bg-color);
}

/* --- Demo 2: To-Do List --- */
.todo-app {
  background-color: var(--bg-color);
  padding: 1.5rem;
  border: 2px solid var(--border-color);
  margin-top: 1.5rem;
}

.todo-app__list {
  list-style: none;
  margin-top: 1.5rem;
}

.todo-app__item {
  display: flex;
  align-items: center;
  padding: 10px;
  background-color: var(--surface-color);
  border: 2px solid var(--border-color);
  margin-bottom: 10px;
  cursor: pointer;
}

.todo-app__item-text {
  margin-right: 10px; /* Space for the delete button */
  word-break: break-word; /* Allow long words to wrap */
  /* Truncate text to 3 lines by default using line-clamp */
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* When expanded, remove the line clamp to show all text */
.todo-app__item-text--expanded {
  -webkit-line-clamp: unset;
  display: block;
}

.todo-app__item--completed {
  text-decoration: line-through;
  color: var(--on-surface-secondary-color);
  background-color: #2a2a2a;
}

.todo-app__delete-btn {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--primary-color);
  cursor: pointer;
  font-size: 1.5rem;
  font-family: monospace;
}

/* --- Demo 3: Weather App --- */
.weather-app {
  background-color: var(--bg-color);
  padding: 1.5rem;
  border: 2px solid var(--border-color);
  margin-top: 1.5rem;
}

.weather-app__result {
  margin-top: 1.5rem;
  padding: 1rem;
  background-color: var(--surface-color);
  border: 2px solid var(--border-color);
  display: none; /* Hidden by default */
  align-items: center;
  justify-content: space-around;
  text-align: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.weather-app__result-info h4 {
  font-family: var(--font-family-heading);
  font-size: 1.2rem;
  color: var(--secondary-color);
}

.weather-app__result-info p {
  margin: 0.5rem 0 0;
  text-transform: capitalize;
}

.weather-app__result-temp {
  font-size: 2.5rem;
  font-weight: bold;
}

.weather-app__result-icon {
  width: 100px;
  height: 100px;
}

.weather-app__error {
  color: var(--primary-color);
  margin-top: 1rem;
  text-align: center;
  display: none; /* Hidden by default */
}

/* --- Tech Stack --- */
.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 1.5rem;
}

.tech-stack__item {
  background-color: var(--bg-color);
  color: var(--secondary-color);
  padding: 8px 15px;
  font-size: 0.9rem;
  font-weight: 500;
  border: 2px solid var(--border-color);
}

/* --- Contact & Footer --- */
.contact-section {
  background-color: var(--surface-color);
  text-align: center;
}

.contact-section .container,
.footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contact__text {
  margin-bottom: 1rem;
}

.contact__repo-link {
  margin-top: 2rem;
  color: var(--on-surface-secondary-color);
}

.footer {
  text-align: center;
  padding: 20px 0;
  border-top: 2px solid var(--border-color);
  color: var(--on-surface-secondary-color);
  font-size: 0.9rem;
}

/* --- Responsiveness --- */
@media (max-width: 768px) {
  .hero__title {
    font-size: 1.5rem;
  }
  .section-title {
    font-size: 1.2rem;
  }

  .hero__icon {
    opacity: 1;
  }

  .hero__icon--korgi {
    top: 15%;
    left: 8%;
    width: 60px;
  }

  .hero__icon--photo {
    top: 20%;
    right: 5%;
    width: 60px;
  }

  .hero__icon--v60 {
    bottom: 15%;
    left: 22%;
    width: 100px;
  }

  .main-nav {
    flex-direction: column;
    height: auto;
    padding: 15px 0;
  }
  .main-nav ul {
    margin-top: 15px;
  }
  .main-nav ul li {
    margin: 0 10px;
  }

  section {
    padding: 60px 0;
  }

  /* Stack shared form on mobile */
  .showcase-form {
    flex-direction: column;
    align-items: stretch;
  }

  .weather-app__result {
    flex-direction: column;
    gap: 1rem;
  }
}