/* Space Invader mk – Retro CRT Design */

@import url('https://fonts.googleapis.com/css2?family=VT323&display=swap');

:root {
    --mksi-green: #00ff41;
    --mksi-red: #ff2244;
    --mksi-yellow: #ffe600;
    --mksi-bg: #000000;
    --mksi-dim: #00ff4133;
    --mksi-font: 'VT323', 'Courier New', monospace;
}

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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--mksi-bg);
    color: var(--mksi-green);
    font-family: var(--mksi-font);
    font-size: 20px;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
}

/* CRT effect */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.15) 0px,
        rgba(0, 0, 0, 0.15) 1px,
        transparent 1px,
        transparent 3px
    );
    pointer-events: none;
    z-index: 9999;
}

/* Matrix Rain Canvas */
#matrix-canvas {
    position: fixed;
    inset: 0;
    z-index: 0;
    opacity: 0.7;
}

/* Wallpaper Background */
.mksi-wallpaper-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0.4;
}
body[data-bg="space"] .mksi-wallpaper-bg {
    opacity: 0.85;
}

/* Vignette Overlay */
.mksi-vignette {
    position: fixed;
    inset: 0;
    z-index: 1;
    background: radial-gradient(ellipse at center,
        transparent 30%,
        rgba(0, 0, 0, 0.75) 70%,
        rgba(0, 0, 0, 0.97) 100%);
    pointer-events: none;
}

/* Custom Cursor */
body.mksi-custom-cursor, body.mksi-custom-cursor * { cursor: none !important; }
#cursor-dot, #cursor-ring {
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    transform: translate(-50%, -50%);
    z-index: 9999;
}
#cursor-dot {
    width: 8px;
    height: 8px;
    background: #9d0b0e;
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.3s;
}
#cursor-ring {
    width: 30px;
    height: 30px;
    border: 2px solid #9d0b0e;
    border-radius: 50%;
    opacity: 0;
    transition: width 0.2s, height 0.2s, opacity 0.3s;
}
#cursor-dot.is-hovering {
    animation: mksi-cursorPulse 0.7s ease-in-out infinite;
}
#cursor-ring.is-hovering {
    width: 42px;
    height: 42px;
    opacity: 0.35;
}

@keyframes mksi-cursorPulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
    50% { transform: translate(-50%, -50%) scale(1.9); opacity: 0.5; }
}

/* Footer */
.mksi-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 50;
    text-align: center;
    padding: 6px 10px;
    font-size: 0.65em;
    height: 30px;
    color: #5a6570;
    font-family: var(--mksi-font);
    letter-spacing: 0.08em;
}

.mksi-footer a {
    color: #5a6570;
    text-decoration: none;
    transition: color 0.2s;
}

.mksi-footer a:hover {
    color: var(--mksi-green);
}

/* Screens */
.mksi-screen {
    position: absolute;
    inset: 0;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 2;
}

.hidden {
    display: none !important;
}

/* Start Screen */
.mksi-title {
    font-size: 2.8em;
    color: var(--mksi-green);
    text-shadow: 0 0 20px var(--mksi-green), 0 0 40px var(--mksi-green);
    margin-bottom: 10px;
    text-align: center;
    letter-spacing: 4px;
}
.mksi-title sup {
    font-size: 0.45em;
    color: var(--mksi-yellow);
    text-shadow: 0 0 10px var(--mksi-yellow);
    vertical-align: super;
    margin-left: -8px;
}

.mksi-subtitle {
    font-size: 1.2em;
    color: var(--mksi-yellow);
    margin-bottom: 40px;
    text-align: center;
    animation: mksi-blink 1s step-end infinite;
}
@keyframes mksi-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* Buttons */
.mksi-btn {
    font-family: var(--mksi-font);
    font-size: 1.3em;
    background: transparent;
    color: var(--mksi-green);
    border: 2px solid var(--mksi-green);
    padding: 12px 32px;
    margin: 8px;
    cursor: pointer;
    transition: all 0.15s;
    text-transform: uppercase;
    letter-spacing: 2px;
    min-width: 200px;
}

.mksi-btn:hover, .mksi-btn:active, .mksi-btn.mksi-btn--focused {
    background: var(--mksi-green);
    color: var(--mksi-bg);
    box-shadow: 0 0 15px var(--mksi-green);
}

.mksi-btn--red {
    color: var(--mksi-red);
    border-color: var(--mksi-red);
}

.mksi-btn--red:hover, .mksi-btn--red:active, .mksi-btn--red.mksi-btn--focused {
    background: var(--mksi-red);
    color: var(--mksi-bg);
    box-shadow: 0 0 15px var(--mksi-red);
}

.mksi-btn--yellow {
    color: var(--mksi-yellow);
    border-color: var(--mksi-yellow);
}

.mksi-btn--yellow:hover, .mksi-btn--yellow:active, .mksi-btn--yellow.mksi-btn--focused {
    background: var(--mksi-yellow);
    color: var(--mksi-bg);
    box-shadow: 0 0 15px var(--mksi-yellow);
}

.mksi-btn-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    margin-bottom: 20px;
}

.mksi-difficulty-label {
    font-size: 1.1em;
    margin-bottom: 8px;
    color: var(--mksi-yellow);
}

/* Game Screen */
.mksi-game-container {
    position: absolute;
    inset: 0;
    bottom: 30px;
    display: flex;
    flex-direction: column;
}

.mksi-hud {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 16px;
    font-size: 1.2em;
    background: rgba(0, 255, 65, 0.05);
    border-bottom: 1px solid var(--mksi-dim);
    z-index: 10;
}

.mksi-hud-score { color: var(--mksi-green); }
.mksi-hud-timer { color: #aaa; font-size: 0.9em; font-variant-numeric: tabular-nums; }
.mksi-hud-lives { color: var(--mksi-red); font-size: 1.4em; }
.mksi-hud-shield {
    color: #00c8ff;
    text-shadow: 0 0 8px #00c8ff;
    font-size: 1em;
}
.mksi-hud-weapons {
    display: flex;
    gap: 6px;
    align-items: center;
}
.mksi-weapon {
    font-size: 0.75em;
    padding: 2px 6px;
    border: 1px solid var(--mksi-dim);
    border-radius: 3px;
    color: var(--mksi-dim);
    letter-spacing: 1px;
}
.mksi-weapon.active {
    border-color: var(--mksi-green);
    color: var(--mksi-green);
    text-shadow: 0 0 6px var(--mksi-green);
}
.mksi-weapon.active[data-color="cyan"] {
    border-color: #00ffff;
    color: #00ffff;
    text-shadow: 0 0 6px #00ffff;
}
.mksi-weapon.active[data-color="red"] {
    border-color: var(--mksi-red);
    color: var(--mksi-red);
    text-shadow: 0 0 6px var(--mksi-red);
}
.mksi-hud-level { color: var(--mksi-yellow); }

body[data-bg="wallpaper"] .mksi-hud,
body[data-bg="wallpaper"] .mksi-game-controls,
body[data-bg="space"] .mksi-hud,
body[data-bg="space"] .mksi-game-controls {
    background: rgba(0, 0, 0, 0.7);
}

.mksi-canvas-wrapper {
    flex: 1;
    position: relative;
    overflow: hidden;
}

#game-canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.mksi-game-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 16px;
    background: rgba(0, 255, 65, 0.05);
    border-top: 1px solid var(--mksi-dim);
    z-index: 10;
}

.mksi-icon-btn {
    font-family: var(--mksi-font);
    font-size: 1.5em;
    background: transparent;
    color: var(--mksi-green);
    border: 1px solid var(--mksi-dim);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 4px;
}

.mksi-quit-bar-btn {
    font-family: var(--mksi-font);
    font-size: 0.85em;
    padding: 6px 14px;
    min-width: auto;
    margin: 0;
}

.mksi-fire-btn {
    font-family: var(--mksi-font);
    font-size: 1.3em;
    background: var(--mksi-red);
    color: #fff;
    border: none;
    padding: 12px 28px;
    border-radius: 4px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 2px;
    box-shadow: 0 0 10px var(--mksi-red);
}

/* Pause overlay */
.mksi-pause-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 20;
    padding: 20px 0;
}

.mksi-pause-text {
    font-size: 3em;
    color: var(--mksi-yellow);
    text-shadow: 0 0 20px var(--mksi-yellow);
    animation: mksi-blink 1s infinite;
}

.mksi-pause-quit {
    font-size: 1em;
    min-width: auto;
    z-index: 2;
    margin-top: auto;
    margin-bottom: 40px;
}

/* Star Wars crawl – bottom to center vanishing point */
.mksi-crawl-container {
    width: 100%;
    flex: 1;
    position: relative;
    overflow: hidden;
    perspective: 400px;
    perspective-origin: 50% 40%;
}
.mksi-crawl {
    position: absolute;
    left: 10%;
    right: 10%;
    text-align: center;
    transform-origin: 50% 0%;
    transform: rotateX(35deg);
    animation: mksi-crawl-scroll 20s linear infinite;
}
.mksi-crawl-label {
    font-size: 1em;
    color: #6a8a9a;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin: 0 0 6px 0;
}
.mksi-crawl-value {
    font-size: 1.5em;
    color: var(--mksi-yellow);
    text-shadow: 0 0 10px rgba(255, 230, 0, 0.4);
    margin: 0 0 28px 0;
}
.mksi-crawl-link {
    color: var(--mksi-yellow);
    text-decoration: none;
    transition: color 0.2s;
}
.mksi-crawl-link:hover {
    color: var(--mksi-green);
    text-shadow: 0 0 10px var(--mksi-green);
}
@keyframes mksi-crawl-scroll {
    0%   { top: 100%; }
    100% { top: -80%; }
}

@keyframes mksi-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* Guide Screen */
.mksi-guide-title {
    font-size: 2.2em;
    color: var(--mksi-yellow);
    text-shadow: 0 0 15px var(--mksi-yellow);
    margin-bottom: 10px;
    flex-shrink: 0;
}
.mksi-guide-scroll {
    flex: 1;
    overflow-y: auto;
    width: 90%;
    max-width: 500px;
    padding: 0 10px 10px;
    scrollbar-width: thin;
    scrollbar-color: var(--mksi-dim) transparent;
}
.mksi-guide-section {
    margin-bottom: 20px;
}
.mksi-guide-section h3 {
    font-size: 1.2em;
    color: var(--mksi-green);
    text-shadow: 0 0 8px var(--mksi-green);
    border-bottom: 1px solid var(--mksi-dim);
    padding-bottom: 4px;
    margin-bottom: 8px;
}
.mksi-guide-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9em;
}
.mksi-guide-table td {
    padding: 3px 8px;
}
.mksi-guide-key {
    color: var(--mksi-yellow);
    white-space: nowrap;
    width: 110px;
}
.mksi-guide-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
    font-size: 0.9em;
}
.mksi-guide-icon {
    font-size: 1.4em;
    width: 28px;
    text-align: center;
    flex-shrink: 0;
}
.mksi-gi-red { color: var(--mksi-red); text-shadow: 0 0 6px var(--mksi-red); }
.mksi-gi-yellow { color: var(--mksi-yellow); text-shadow: 0 0 6px var(--mksi-yellow); }
.mksi-gi-green { color: var(--mksi-green); text-shadow: 0 0 6px var(--mksi-green); }
.mksi-gi-cyan { color: #00ffff; text-shadow: 0 0 6px #00ffff; }
.mksi-guide-tag {
    font-size: 0.85em;
    padding: 2px 10px;
    border: 1px solid currentColor;
    border-radius: 3px;
    min-width: 60px;
    text-align: center;
}
.mksi-guide-formula {
    color: var(--mksi-yellow);
    text-align: center;
    font-size: 1em;
    margin: 8px 0;
    text-shadow: 0 0 6px rgba(255, 230, 0, 0.3);
}
.mksi-guide-hint {
    font-size: 0.8em;
    color: var(--mksi-dim);
    font-style: italic;
    margin: 4px 0 8px;
}

/* Level Up Screen */
.mksi-level-complete {
    font-size: 2.5em;
    color: var(--mksi-yellow);
    text-shadow: 0 0 20px var(--mksi-yellow);
    margin-bottom: 20px;
}

.mksi-level-info {
    font-size: 1.4em;
    margin-bottom: 10px;
}
.mksi-level-info:last-of-type {
    margin-bottom: 30px;
}
.mksi-bonus-info {
    color: var(--mksi-yellow);
    text-shadow: 0 0 10px var(--mksi-yellow);
}

/* Game Over Screen */
/* Game Over animation */
.mksi-go-anim {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
    pointer-events: none;
}
.mksi-go-zoom {
    font-size: 3em;
    color: var(--mksi-red);
    text-shadow: 0 0 20px var(--mksi-red), 0 0 60px var(--mksi-red);
    animation: mksi-go-fly 2s ease-in forwards;
}
@keyframes mksi-go-fly {
    0%   { transform: scale(0.05); opacity: 0; }
    20%  { opacity: 1; }
    80%  { transform: scale(1); opacity: 1; }
    90%  { transform: scale(1.3); opacity: 1; text-shadow: 0 0 40px var(--mksi-red), 0 0 80px #ff6600, 0 0 120px #ffe600; }
    100% { transform: scale(3); opacity: 0; }
}
.mksi-go-zoom--quote {
    font-size: 1.4em;
    color: var(--mksi-yellow);
    text-shadow: 0 0 20px var(--mksi-yellow), 0 0 60px var(--mksi-yellow);
    text-align: center;
    line-height: 1.4;
    animation: mksi-go-fly-quote 2.2s ease-in forwards;
}
@keyframes mksi-go-fly-quote {
    0%   { transform: scale(0.05); opacity: 0; }
    20%  { opacity: 1; }
    75%  { transform: scale(1); opacity: 1; }
    85%  { transform: scale(1.1); opacity: 1; text-shadow: 0 0 30px var(--mksi-yellow), 0 0 60px #ff6600; }
    100% { transform: scale(2.5); opacity: 0; }
}
.mksi-go-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 6;
}
.mksi-go-quote {
    font-size: 1.1em;
    color: var(--mksi-yellow);
    text-shadow: 0 0 10px rgba(255,230,0,0.4);
    text-align: center;
    margin-bottom: 20px;
    animation: mksi-fadein 0.8s ease-out;
}
@keyframes mksi-fadein {
    0%   { opacity: 0; transform: translateY(10px); }
    100% { opacity: 1; transform: translateY(0); }
}
.mksi-blink-border {
    animation: mksi-border-blink 1s step-end infinite;
}
@keyframes mksi-border-blink {
    0%, 100% { border-color: var(--mksi-green); }
    50% { border-color: var(--mksi-yellow); box-shadow: 0 0 12px var(--mksi-yellow); }
}

.mksi-final-score {
    font-size: 1.8em;
    color: var(--mksi-yellow);
    margin-bottom: 30px;
}

.mksi-name-input {
    font-family: var(--mksi-font);
    font-size: 1.4em;
    background: transparent;
    color: var(--mksi-green);
    border: 2px solid var(--mksi-green);
    padding: 10px 16px;
    text-align: center;
    width: 200px;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 4px;
    outline: none;
}

.mksi-name-input:focus {
    box-shadow: 0 0 10px var(--mksi-green);
}

.mksi-name-input::placeholder {
    color: var(--mksi-dim);
}

/* Highscore Screen */
.mksi-hs-title {
    font-size: 2.2em;
    color: var(--mksi-yellow);
    text-shadow: 0 0 15px var(--mksi-yellow);
    margin-bottom: 20px;
}

.mksi-hs-list {
    width: 100%;
    max-width: 360px;
    margin-bottom: 30px;
}

.mksi-hs-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    border-bottom: 1px solid var(--mksi-dim);
    font-size: 1.2em;
}

.mksi-hs-rank {
    width: 30px;
    color: var(--mksi-yellow);
}

.mksi-hs-name {
    flex: 1;
    text-align: left;
    padding-left: 10px;
}

.mksi-hs-score {
    color: var(--mksi-yellow);
    min-width: 80px;
    text-align: right;
}

.mksi-no-scores {
    color: var(--mksi-dim);
    font-size: 1.1em;
    text-align: center;
}

/* Decorative invader sprites on start screen */
.mksi-invader-row {
    display: flex;
    gap: 16px;
    margin-bottom: 30px;
    opacity: 0.6;
    font-size: 2em;
}

/* Wallpaper settings */
.mksi-file-input {
    display: none;
}

.mksi-file-btn {
    font-family: var(--mksi-font);
    font-size: 0.85em;
    background: rgba(0, 255, 65, 0.1);
    color: var(--mksi-green);
    border: 1px solid var(--mksi-green);
    padding: 4px 12px;
    border-radius: 4px;
    cursor: pointer;
    white-space: nowrap;
}

.mksi-file-btn:hover {
    background: var(--mksi-green);
    color: var(--mksi-bg);
}

.mksi-wallpaper-name {
    font-size: 0.8em;
    color: var(--mksi-dim);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    min-width: 0;
}

.mksi-wallpaper-preview {
    width: 100%;
    height: 80px;
    border: 1px solid var(--mksi-dim);
    border-radius: 4px;
    margin-bottom: 8px;
    background-size: cover;
    background-position: center;
}

/* Settings Screen */
.mksi-settings-title {
    font-size: 2.2em;
    color: var(--mksi-yellow);
    text-shadow: 0 0 15px var(--mksi-yellow);
    margin-bottom: 20px;
}

.mksi-settings-panel {
    width: 100%;
    max-width: 400px;
    max-height: 60vh;
    overflow-y: auto;
    margin-bottom: 20px;
}

.mksi-setting-group {
    border: 1px solid var(--mksi-dim);
    border-radius: 6px;
    padding: 12px 16px;
    margin-bottom: 12px;
}

.mksi-setting-header {
    font-size: 1em;
    color: var(--mksi-yellow);
    margin-bottom: 10px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.mksi-setting-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    font-size: 0.9em;
}

.mksi-setting-row label {
    min-width: 80px;
    color: var(--mksi-green);
}

.mksi-select {
    font-family: var(--mksi-font);
    font-size: 1em;
    background: #111;
    color: var(--mksi-green);
    border: 1px solid var(--mksi-dim);
    padding: 6px 10px;
    border-radius: 4px;
    flex: 1;
    outline: none;
}

.mksi-select:focus {
    border-color: var(--mksi-green);
}

.mksi-slider {
    flex: 1;
    accent-color: var(--mksi-green);
    height: 4px;
}

.mksi-slider-val {
    min-width: 40px;
    text-align: right;
    color: var(--mksi-green);
    font-size: 0.85em;
}

.mksi-toggle {
    font-family: var(--mksi-font);
    font-size: 0.9em;
    background: rgba(0, 255, 65, 0.1);
    color: var(--mksi-green);
    border: 1px solid var(--mksi-green);
    padding: 4px 16px;
    border-radius: 4px;
    cursor: pointer;
    min-width: 50px;
    letter-spacing: 1px;
}

.mksi-toggle.off {
    background: rgba(255, 34, 68, 0.1);
    color: var(--mksi-red);
    border-color: var(--mksi-red);
}

.mksi-btn--small {
    font-size: 0.85em;
    padding: 6px 16px;
    min-width: auto;
    margin: 0;
}

/* Responsive */
@media (max-width: 480px) {
    .mksi-title { font-size: 2em; }
    .mksi-btn { font-size: 1.1em; padding: 10px 24px; min-width: 160px; }
    .mksi-go-zoom { font-size: 2.2em; }
}

/* Easter Egg */
.mksi-easter-egg {
    position: fixed;
    inset: 0;
    z-index: 9000;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}
.mksi-ee-text {
    font-size: 1.5em;
    color: var(--mksi-red);
    text-align: center;
    line-height: 1.5;
    text-shadow: 0 0 20px var(--mksi-red), 0 0 40px var(--mksi-red);
    animation: mksi-blink 0.8s step-end infinite;
    margin-bottom: 30px;
    z-index: 9002;
    position: relative;
}
.mksi-ee-face {
    position: absolute;
    right: -300px;
    animation: mksi-ee-slide 1.5s ease-out forwards;
}
.mksi-ee-face-dummy {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: var(--mksi-yellow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4em;
    color: #000;
    font-family: var(--mksi-font);
    text-shadow: none;
    box-shadow: 0 0 40px var(--mksi-yellow), 0 0 80px rgba(255, 230, 0, 0.3);
}
@keyframes mksi-ee-slide {
    0%   { right: -300px; }
    100% { right: calc(50% - 100px); }
}

@media (min-width: 768px) {
    .mksi-fire-btn { display: none; }
}