/* ---------- CSS variables for light/dark themes ---------- */
:root {
  --transition-speed: 0.5s;      /* smooth, noticeable transition */

  /* Light mode (default) – previous sea theme */
  --bg-body: #b0e0e6;
  --text-body: #023047;
  --bg-toolbar: #fefae0;
  --border-toolbar: #0b4f6c;
  --shadow-toolbar: #7ec8e3;
  --button-bg: #2a9d8f;
  --button-border: #0b4f6c;
  --button-text: #fefae0;
  --button-shadow: #1e3a5f;
  --button-hover: #48cae4;
  --window-bg: #e2f0f9;
  --window-border: #0b4f6c;
  --window-shadow: #7ec8e3;
  --window-inset: #b0e0e6;
  --header-bg: #a2d9f7;
  --header-border: #0b4f6c;
  --title-color: #023047;
  --close-border: #0b4f6c;
  --close-color: #023047;
  --close-shadow: #7ec8e3;
  --close-hover-bg: #2a9d8f;
  --close-hover-text: #fefae0;
  --placeholder-bg: #7ec8e3;
  --placeholder-border: #0b4f6c;
  --placeholder-shadow: #1e3a5f;
  --list-border: #2a9d8f;
  --progress-bg: #a2d9f7;
  --progress-fill: #2a9d8f;
  --footer-text: #023047;
  --wave-back-color: #1e6b5e;      /* darker sea green */
  --wave-front-color: #2a9d8f;     /* main sea green */
}

/* Dark mode – deep sea theme (improved contrast) */
.dark-theme {
  --bg-body: #0a1c2f;
  --text-body: #c1d9f0;
  --bg-toolbar: #1e4a6b;          /* lighter, more vibrant blue */
  --border-toolbar: #2f7a8c;
  --shadow-toolbar: #0f2a3b;
  --button-bg: #2f7a8c;
  --button-border: #9ad4d6;
  --button-text: #f0f9ff;          /* almost white */
  --button-shadow: #1e3a5f;
  --button-hover: #48cae4;
  --window-bg: #0e2a3a;
  --window-border: #2f7a8c;
  --window-shadow: #1e4a6b;
  --window-inset: #1c3f54;
  --header-bg: #1c4e6f;
  --header-border: #2f7a8c;
  --title-color: #9ad4d6;
  --close-border: #9ad4d6;
  --close-color: #9ad4d6;
  --close-shadow: #1e4a6b;
  --close-hover-bg: #2f7a8c;
  --close-hover-text: #0a1c2f;
  --placeholder-bg: #1e4a6b;
  --placeholder-border: #2f7a8c;
  --placeholder-shadow: #0a1c2f;
  --list-border: #2f7a8c;
  --progress-bg: #1c4e6f;
  --progress-fill: #9ad4d6;
  --footer-text: #9ad4d6;
  --wave-back-color: #236c8c;      /* darker teal */
  --wave-front-color: #48cae4;     /* light turquoise */
}

/* ---------- global styles ---------- */
body {
  background-color: var(--bg-body);
  font-family: 'VT323', monospace;
  font-size: 20px;
  color: var(--text-body);
  margin: 20px;
  image-rendering: pixelated;
  line-height: 1.5;
  overflow-x: hidden;
  transition: background-color var(--transition-speed), color var(--transition-speed);
  position: relative;
  z-index: 0;
}
/* Twitter embed styling */
.twitter-tweet {
  margin: 15px auto !important;
  border: 3px solid var(--window-border) !important;
  box-shadow: 4px 4px 0 var(--window-shadow) !important;
  max-width: 100% !important;
  border-radius: 0 !important; /* keeps pixel edges */
}

.twitter-tweet iframe {
  image-rendering: pixelated !important;
}
h1, h2, h3, .pixel-button, .window-title {
  font-family: 'Press Start 2P', 'Courier New', monospace;
}

h1 {
  font-size: 20px;
  text-align: center;
  margin-bottom: 20px;
  color: var(--title-color);
  text-shadow: 3px 3px 0 var(--shadow-toolbar);
}

/* toolbar */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 30px;
  background: var(--bg-toolbar);
  padding: 15px;
  border: 3px solid var(--border-toolbar);
  box-shadow: 6px 6px 0 var(--shadow-toolbar);
  transition: background-color var(--transition-speed), border-color var(--transition-speed), box-shadow var(--transition-speed);
}

/* pixel button */
.pixel-button {
  background-color: var(--button-bg);
  border: 3px solid var(--button-border);
  color: var(--button-text);
  font-family: 'Press Start 2P', 'Courier New', monospace;
  font-size: 12px;
  padding: 10px 20px;
  text-shadow: 2px 2px 0 var(--button-shadow);
  box-shadow: 4px 4px 0 var(--button-shadow);
  cursor: pointer;
  border: 2px solid var(--button-border);
  transition: background-color var(--transition-speed), color var(--transition-speed), box-shadow var(--transition-speed), transform 0.1s ease;
}

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

/* toggle button */
.theme-toggle {
  background-color: var(--button-bg);
  border: 2px solid var(--button-border);
  color: var(--button-text);
  font-family: 'Press Start 2P', monospace;
  font-size: 12px;
  padding: 8px 16px;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--button-shadow);
  margin-left: auto;
  transition: background-color var(--transition-speed), color var(--transition-speed), box-shadow var(--transition-speed);
}
.theme-toggle:hover {
  background-color: var(--button-hover);
}

/* container for windows */
#window-container {
  position: relative;
  min-height: 500px;
}

/* draggable window – now with scrollable content */
.window {
  position: absolute;
  width: 280px;
  max-height: 400px;              /* limits window height */
  display: flex;
  flex-direction: column;          /* stacks header and content */
  background-color: var(--window-bg);
  border: 4px solid var(--window-border);
  box-shadow: 8px 8px 0 var(--window-shadow), inset 0 0 0 3px var(--window-inset);
  padding: 0;
  z-index: 10;
  cursor: default;
  font-family: 'VT323', monospace;
  font-size: 18px;
  color: var(--text-body);
  transition: background-color var(--transition-speed), border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.window-header {
  flex-shrink: 0;                  /* prevents header from shrinking */
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--header-bg);
  padding: 8px 12px;
  border-bottom: 3px solid var(--header-border);
  cursor: grab;
  user-select: none;
  transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.window-header:active {
  cursor: grabbing;
}

.window-title {
  font-family: 'Press Start 2P', monospace;
  font-size: 10px;
  color: var(--title-color);
  letter-spacing: 0.5px;
}

/* close button */
.window-close {
  background: none;
  border: 2px solid var(--close-border);
  color: var(--close-color);
  font-size: 18px;
  font-weight: bold;
  cursor: pointer;
  padding: 0 12px;
  line-height: 1;
  box-shadow: 2px 2px 0 var(--close-shadow);
  touch-action: manipulation;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  transition: background-color var(--transition-speed), color var(--transition-speed), border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.window-close:hover {
  background-color: var(--close-hover-bg);
  color: var(--close-hover-text);
}

.window-content {
  padding: 15px;
  overflow-y: auto;                /* enables vertical scrolling */
  flex: 1;                         /* takes remaining space */
  min-height: 0;                   /* required for flex child to scroll */
}

/* pixel placeholder */
.pixel-placeholder {
  background-color: var(--placeholder-bg);
  border: 3px solid var(--placeholder-border);
  box-shadow: inset 3px 3px 0px var(--placeholder-shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-body);
  font-size: 12px;
  image-rendering: pixelated;
  margin: 10px 0;
  transition: background-color var(--transition-speed), border-color var(--transition-speed), box-shadow var(--transition-speed);
}

/* list styling */
ul {
  list-style-type: none;
  padding-left: 5px;
}
li {
  margin-bottom: 6px;
  border-left: 3px solid var(--list-border);
  padding-left: 8px;
  transition: border-color var(--transition-speed);
}

/* progress bars */
progress {
  border: 2px solid var(--window-border);
  background-color: var(--progress-bg);
  color: var(--progress-fill);
  transition: border-color var(--transition-speed), background-color var(--transition-speed);
}
progress::-webkit-progress-bar {
  background-color: var(--progress-bg);
}
progress::-webkit-progress-value {
  background-color: var(--progress-fill);
}

footer {
  text-align: center;
  margin-top: 40px;
  margin-bottom: 60px;              /* space for wave */
  font-size: 14px;
  color: var(--footer-text);
  transition: color var(--transition-speed);
}

/* ---------- Two-layer animated waves (bottom only) ---------- */
.wave-container {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 60px;               /* original small height */
  overflow: hidden;
  pointer-events: none;
  z-index: 5;
}

.wave {
  position: absolute;
  bottom: 0;
  width: 200%;                /* twice container width for seamless loop */
  height: 100%;
  background: transparent;
}

.wave-back {
  fill: var(--wave-back-color);
  animation: waveFlow 16s linear infinite;
  z-index: 5;
  opacity: 0.7;
}

.wave-front {
  fill: var(--wave-front-color);
  animation: waveFlow 10s linear infinite;
  animation-delay: -2s;
  z-index: 6;
  opacity: 0.9;
}

@keyframes waveFlow {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* Soft fade above wave to improve text readability (optional) */
.wave-container::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, transparent, var(--bg-body) 80%);
  pointer-events: none;
  z-index: 7;
}

/* ---------- Mobile‑friendly improvements ---------- */
@media (max-width: 600px) {
  .toolbar {
    display: grid;
    grid-template-columns: repeat(2, 1fr);  /* two equal columns */
    gap: 10px;
    padding: 12px;
  }

  .toolbar .pixel-button,
  .toolbar .theme-toggle {
    width: 100%;
    margin: 0;
    justify-self: stretch;
    font-size: 11px;
    padding: 12px 8px;
    min-height: 48px;
  }

  /* Optional: make theme toggle span full width if you prefer */
  .toolbar .theme-toggle {
    grid-column: span 2;        /* comment this out if you want it inline */
  }

  .window {
    max-height: 300px;
    width: 240px;
    font-size: 16px;
  }

  .window-header {
    padding: 12px;
  }

  .window-close {
    min-width: 48px;
    min-height: 48px;
    font-size: 24px;
  }

  .wave-container {
    height: 30vh;               /* slightly smaller on mobile */
    min-height: 100px;
    max-height: 200px;
  }
}