/*
 * Stylesheet for the Flask version of Rev's portfolio.
 * It mirrors the static version with additional styles for
 * server‑side flash messages. See the static version for comments on
 * each section. Variables enable theming and modern design elements.
 */

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

html {
  scroll-behavior: smooth;
}

:root {
  --background-color: #0a0f24;
  --foreground-color: #f5f5f5;
  --accent-color: #7c4de5;
  --overlay-color: rgba(0, 0, 0, 0.5);
  --card-bg: #151b3a;
  --card-shadow: rgba(0, 0, 0, 0.4);
}

[data-theme='light'] {
  --background-color: #f5f5fc;
  --foreground-color: #1a1a2e;
  --accent-color: #7c4de5;
  --overlay-color: rgba(255, 255, 255, 0.6);
  --card-bg: #ffffff;
  --card-shadow: rgba(0, 0, 0, 0.1);
}

body {
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  background-color: var(--background-color);
  color: var(--foreground-color);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

.hero {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background-image: linear-gradient(var(--overlay-color), var(--overlay-color)), url('hero-bg.png');
  background-size: cover;
  background-position: center;
  color: var(--foreground-color);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 0;
}

.logo {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--accent-color);
}

.nav-links {
  display: flex;
  gap: 1.2rem;
  align-items: center;
  list-style: none;
}

.nav-links a {
  color: var(--foreground-color);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: var(--accent-color);
}

#theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--foreground-color);
  font-size: 1.4rem;
  transition: color 0.3s ease;
}

#theme-toggle:hover {
  color: var(--accent-color);
}

.hero-content {
  text-align: center;
  margin-top: auto;
  margin-bottom: 6rem;
}

.title {
  font-family: 'Orbitron', sans-serif;
  font-size: 3rem;
  letter-spacing: 4px;
  margin-bottom: 0.5rem;
}

.subtitle {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: var(--foreground-color);
  opacity: 0.8;
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.6rem;
  background-color: var(--accent-color);
  color: #fff;
  border-radius: 0.4rem;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 1px;
  transition: transform 0.2s ease, filter 0.2s ease;
}

.btn:hover {
  filter: brightness(1.2);
  transform: translateY(-2px);
}

.btn.small {
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
}

.section {
  padding: 5rem 0;
}

.section h2 {
  font-family: 'Orbitron', sans-serif;
  font-size: 2rem;
  margin-bottom: 1rem;
  color: var(--accent-color);
  text-align: center;
}

.section p,
.section ul {
  max-width: 800px;
  margin: 0 auto 2rem;
  text-align: center;
}

.portfolio-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background-color: var(--card-bg);
  border-radius: 0.5rem;
  overflow: hidden;
  box-shadow: 0 4px 12px var(--card-shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px var(--card-shadow);
}

.card img {
  width: 100%;
  height: auto;
  display: block;
}

.card h3 {
  font-size: 1.3rem;
  margin: 1rem 1rem 0.5rem;
  color: var(--accent-color);
}

.card p {
  flex-grow: 1;
  margin: 0 1rem 1rem;
  text-align: left;
  color: var(--foreground-color);
  opacity: 0.9;
}

.skills-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  padding: 0;
}

.skills-list li {
  background-color: var(--card-bg);
  padding: 0.6rem 1rem;
  border-radius: 0.3rem;
  box-shadow: 0 2px 8px var(--card-shadow);
  font-weight: 500;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.skills-list li:hover {
  background-color: var(--accent-color);
  color: #fff;
}

form {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.3rem;
  font-weight: 600;
  color: var(--accent-color);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.7rem 1rem;
  border: 2px solid var(--card-bg);
  border-radius: 0.3rem;
  background-color: var(--card-bg);
  color: var(--foreground-color);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-color);
}

.flash-messages {
  text-align: center;
  margin-top: 1rem;
}

.flash-messages .success {
  color: var(--accent-color);
}

.flash-messages .error {
  color: #ff6b6b;
}

.status {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: var(--accent-color);
  text-align: center;
}

.footer {
  background-color: var(--card-bg);
  color: var(--foreground-color);
  padding: 2rem 0;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  color: var(--foreground-color);
  transition: color 0.3s ease;
}

.social-links a:hover {
  color: var(--accent-color);
}

.social-links svg {
  width: 24px;
  height: 24px;
}

/*
 * Chat hub styling
 *
 * The chat section aligns with the overall aesthetic of the portfolio.
 * Messages appear in a scrollable list with subtle shadows and the send
 * controls sit inline below the message log.  Colours adapt based on
 * the current theme using the same CSS variables used throughout the site.
 */
#chat .container {
  text-align: center;
}

.chat-container {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

#chat-messages {
  list-style: none;
  background-color: var(--card-bg);
  border-radius: 0.5rem;
  padding: 1rem;
  height: 300px;
  overflow-y: auto;
  box-shadow: 0 4px 12px var(--card-shadow);
  width: 100%;
}

#chat-messages li {
  margin-bottom: 0.5rem;
  padding: 0.4rem 0.6rem;
  border-radius: 0.3rem;
  background-color: var(--card-bg);
  color: var(--foreground-color);
  opacity: 0.9;
  max-width: 80%;
}

/* Own messages align to the right with accent background */
#chat-messages li.self {
  margin-left: auto;
  background-color: var(--accent-color);
  color: #fff;
  text-align: right;
}

/* Other messages align to the left by default */
#chat-messages li.other {
  margin-right: auto;
  text-align: left;
  background-color: var(--card-bg);
  color: var(--foreground-color);
}

.chat-input-group {
  display: flex;
  gap: 0.5rem;
}

/* Name input group for chat */
.chat-name-group {
  display: flex;
  justify-content: center;
  margin-bottom: 0.5rem;
}

#chat-name {
  width: 100%;
  max-width: 600px;
  padding: 0.6rem 1rem;
  border: 2px solid var(--card-bg);
  border-radius: 0.3rem;
  background-color: var(--card-bg);
  color: var(--foreground-color);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.3s ease;
}

#chat-name:focus {
  border-color: var(--accent-color);
}

#chat-input {
  flex: 1;
  padding: 0.6rem 1rem;
  border: 2px solid var(--card-bg);
  border-radius: 0.3rem;
  background-color: var(--card-bg);
  color: var(--foreground-color);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.3s ease;
}

#chat-input:focus {
  border-color: var(--accent-color);
}

#send-button {
  padding: 0.6rem 1rem;
  background-color: var(--accent-color);
  color: #fff;
  border: none;
  border-radius: 0.3rem;
  cursor: pointer;
  font-weight: 600;
  letter-spacing: 0.5px;
  transition: transform 0.2s ease, filter 0.2s ease;
}

#send-button:hover {
  filter: brightness(1.2);
  transform: translateY(-2px);
}

.hidden {
  opacity: 0;
  transform: translateY(50px);
}

/*
 * Animated cat playground below the chat section.  Each cat element is
 * absolutely positioned within this area and slides horizontally across
 * the screen using a CSS animation.  Chat bubbles appear above the cats
 * when users send messages.
 */
#cat-area {
  position: relative;
  height: 130px;
  width: 100%;
  overflow: hidden;
  border-top: 1px solid var(--card-bg);
}

.cat-wrapper {
  position: absolute;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 80px;
  pointer-events: none;
  /* Animation handled via JavaScript; remove CSS animation */
}

.cat-wrapper img.cat {
  width: 80px;
  height: auto;
  display: block;
}

.cat-wrapper .bubble {
  background-color: var(--card-bg);
  color: var(--foreground-color);
  padding: 0.2rem 0.6rem;
  border-radius: 0.5rem;
  margin-bottom: 0.4rem;
  white-space: nowrap;
  font-size: 0.75rem;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.cat-wrapper .bubble.show {
  opacity: 1;
}

@keyframes cat-slide {
  0% {
    transform: translateX(-120%);
  }
  100% {
    transform: translateX(120%);
  }
}

.show {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 1s ease, transform 1s ease;
}