/* SPACE_INVADER Retro Arcade Stylesheet
   Version: 0.7 */

@import url('../variables.css');

:root {
  /* Internal version checking variable */
  --css-version: "0.7";
}

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

body {
  min-height: 100vh;
  background: linear-gradient(
    -45deg,
    var(--cycler-gradient-start),
    var(--cycler-gradient-mid-a),
    var(--cycler-gradient-mid-b),
    var(--cycler-gradient-end)
  );
  background-size: 320% 320%;
  background-attachment: fixed;
  background-color: #313131;
  animation: cycler-gradient 40s ease-in-out infinite;
  color: var(--panel-text);
  font-family: 'Amaranth', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-size: clamp(16px, 0.3vw + 15px, 18px);
  line-height: 1.6;
  padding: 0 0 2rem;
}

@keyframes cycler-gradient {
  0% { background-position: 18% 50%; }
  50% { background-position: 82% 50%; }
  100% { background-position: 18% 50%; }
}

header {
  width: 95%;
  max-width: 55rem;
  margin: 0.5em auto 0.8em;
  padding: 0.5em 0.7em 0.65em;
  text-align: center;
  background: var(--cycler-glass-bg);
  border: 1px solid var(--cycler-glass-border);
  border-radius: 20px;
  box-shadow: var(--cycler-header-shadow);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

header h1 {
  color: var(--heading-text);
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  font-variant: small-caps;
  font-weight: 700;
  line-height: 1.12;
}

header p {
  max-width: 75ch;
  margin: 0.35em auto 0;
  color: var(--heading-copy);
  font-size: clamp(0.9rem, 1vw + 0.7rem, 1.1rem);
  line-height: 1.35;
}

.container {
  width: 95%;
  max-width: 55rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.9em;
}

/* Glass-style container layout panels */
.panel {
  background-color: var(--cycler-grid-bg-color);
  background-image: var(--panel-bg-image);
  border: 1px solid var(--cycler-border);
  border-radius: 20px;
  box-shadow: 1px 1px 4px 0 var(--cycler-shadow);
  padding: 0.9em;
}

/* ============================================================================
   SETTINGS PANEL
   ============================================================================ */

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8.125rem, 1fr));
  gap: 0.7em;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.25em;
}

.field label {
  color: var(--panel-muted);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
}

.field select {
  height: 2.6rem;
  color: var(--field-text);
  background: var(--field-bg);
  border: 1px solid var(--cycler-border);
  border-radius: 6px;
  font: inherit;
  font-size: 0.9rem;
  padding: 0.35em 0.55em;
  cursor: pointer;
  width: 100%;
}

.field select:focus {
  outline: none;
  border-color: var(--cycler-hover);
  box-shadow: 0 0 0 3px rgba(199, 42, 147, 0.22);
}

/* ============================================================================
   ARCADE CABINET CONTAINER
   ============================================================================ */

.arcade-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.2em 0.9em 0.9em;
}

.screen-container {
  width: 100%;
  max-width: 42rem;
  aspect-ratio: 7 / 8;
  margin: 0 auto 0.6em;
  background-color: #000;
  border: 4px double var(--cycler-border);
  border-radius: 8px;
  box-shadow: 
    0 10px 30px rgba(0, 0, 0, 0.8),
    0 0 20px var(--cycler-button-glow),
    inset 0 0 20px rgba(0, 255, 0, 0.1);
  overflow: hidden;
  position: relative;
}

@media (min-width: 46.875rem) {
  .screen-container {
    width: 42rem;
    height: 48rem;
  }
}

canvas {
  width: 100%;
  height: 100%;
  display: block;
  image-rendering: -moz-crisp-edges;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

canvas:focus-visible {
  outline: none;
}

.screen-container:has(canvas:focus-visible) {
  border-color: var(--cycler-hover);
  box-shadow: 
    0 10px 30px rgba(0, 0, 0, 0.8),
    0 0 25px var(--cycler-hover),
    inset 0 0 20px rgba(0, 255, 0, 0.1);
}

/* ============================================================================
   ACTIONS PANEL
   ============================================================================ */

.actions {
  display: flex;
  justify-content: center;
  gap: 0.8em;
  width: 100%;
}

button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.5rem;
  padding: 0.4em 1.2em;
  color: var(--cycler-button-text);
  background-color: var(--cycler-button-bg);
  background-image: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.4) 0%,
    rgba(255, 255, 255, 0.05) 50%,
    rgba(0, 0, 0, 0.05) 51%,
    rgba(0, 0, 0, 0.1) 100%
  );
  border: 1px solid var(--cycler-border);
  border-radius: 8px;
  box-shadow:
    inset 1px 1px 0 rgba(255, 255, 255, 0.6),
    inset -1px -1px 0 rgba(0, 0, 0, 0.1),
    0 1px 2px rgba(0, 0, 0, 0.2),
    0 0 12px var(--cycler-button-glow);
  cursor: pointer;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  text-shadow: 1px 1px 0 rgba(255, 255, 255, 0.3);
  transition: background-color 0.15s ease-out,
              box-shadow 0.15s ease-out,
              transform 0.15s ease-out;
}

button:hover {
  background-color: var(--cycler-button-bg-hover);
  background-image: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.5) 0%,
    rgba(255, 255, 255, 0.1) 100%
  );
  transform: translateY(1.5px);
  box-shadow:
    inset 2px 2px 6px rgba(0, 0, 0, 0.2),
    inset -1px -1px 4px rgba(255, 255, 255, 0.1),
    0 0 15px var(--cycler-button-glow);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.4;
  transform: none;
  box-shadow:
    inset 1px 1px 0 rgba(255, 255, 255, 0.35),
    inset -1px -1px 0 rgba(0, 0, 0, 0.08);
}

button:focus-visible {
  outline: 3px solid var(--cycler-hover);
  outline-offset: 2px;
}

button.primary {
  background-color: var(--cycler-hover);
  color: #ffffff;
  border-color: var(--cycler-hover);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
  box-shadow: 0 0 14px rgba(199, 42, 147, 0.5);
  background-image: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.2) 0%,
    rgba(255, 255, 255, 0.02) 50%,
    rgba(0, 0, 0, 0.05) 51%,
    rgba(0, 0, 0, 0.15) 100%
  );
}

button.primary:hover {
  background-color: #b01b80;
  box-shadow: 0 0 18px rgba(199, 42, 147, 0.7);
}

/* ============================================================================
   CACHE WARNING BANNER
   ============================================================================ */

.cache-warning {
  display: none;
  background: var(--danger, #a51535);
  color: #fff;
  border-radius: 8px;
  padding: 0.5em 0.8em;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 0.8em;
  text-align: center;
}

.cache-warning.visible {
  display: block;
}

/* ============================================================================
   THEME TOGGLE
   ============================================================================ */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25em;
  width: fit-content;
  max-width: 95%;
  margin: 0;
  padding: 0.22em;
  color: var(--cycler-theme-text);
  background: var(--cycler-theme-bg);
  border: 1px solid var(--cycler-glass-border);
  border-radius: 999px;
  box-shadow: 0 8px 16px rgba(45, 4, 82, 0.2);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.theme-toggle button {
  appearance: none;
  -webkit-appearance: none;
  min-height: 1.9rem;
  padding: 0.25em 0.58em;
  color: var(--cycler-theme-text);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  font-size: clamp(13px, 0.45vw + 0.65rem, 16px);
  line-height: 1;
  transition: background-color 0.15s ease-out,
              border-color 0.15s ease-out,
              box-shadow 0.15s ease-out,
              transform 0.15s ease-out;
}

.theme-toggle button:hover,
.theme-toggle button:focus {
  background: var(--cycler-theme-active-bg);
  border-color: var(--cycler-glass-border);
  outline: none;
}

.theme-toggle button[aria-pressed="true"] {
  color: var(--cycler-button-text);
  background-color: var(--cycler-button-bg);
  border-color: var(--cycler-border);
  box-shadow:
    inset 1px 1px 0 rgba(255, 255, 255, 0.35),
    0 0 10px var(--cycler-button-glow);
}

.theme-toggle button:focus-visible {
  outline: 3px solid var(--cycler-hover);
  outline-offset: 2px;
}

/* ============================================================================
   FOOTER
   ============================================================================ */
footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1em;
  width: 95%;
  max-width: 55rem;
  margin: 2em auto 1.5em auto;
  padding: 1.2em 1em;
  color: var(--panel-text);
  font-size: 0.9em;
  border: 1px solid var(--cycler-border);
  background-color: var(--cycler-grid-bg-color);
  background-image: var(--panel-bg-image);
  border-radius: 20px;
  box-shadow: 1px 1px 4px 0 var(--cycler-shadow);
  box-sizing: border-box;
}

footer p {
  margin: 0;
}

/* ============================================================================
   RESPONSIVE BREAKPOINTS
   ============================================================================ */

@media (max-width: 30rem) {
  body {
    padding-bottom: 1rem;
  }
  
  header {
    width: 95%;
  }

  .container {
    width: 95%;
    gap: 0.7em;
  }

  .panel {
    padding: 0.7em;
  }

  .screen-container {
    border-width: 0.125rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  body {
    animation: none;
    background-position: 0% 50%;
  }
}