@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&family=Roboto+Mono:wght@400;700&display=swap');

:root {
    --blue-portal: #00bcff;
    --orange-portal: #ff8400;
    --bg-dark: #080a0f;
    --text-light: #f3f4f6;
    --glass-bg: rgba(10, 15, 25, 0.65);
    --glass-border: rgba(255, 255, 255, 0.08);
}

body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--bg-dark);
    font-family: 'Outfit', sans-serif;
    color: var(--text-light);
    user-select: none;
    -webkit-user-select: none;
}

#canvas-container {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
}

/* Reticle / Crosshair */
#crosshair {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 44px;
    height: 44px;
    pointer-events: none;
    z-index: 10;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s ease;
}

.crosshair-half {
    width: 16px;
    height: 32px;
    border: 3.5px solid transparent;
    transition: border-color 0.2s, filter 0.2s;
}

#crosshair-left {
    border-left-color: rgba(255, 255, 255, 0.2);
    border-top-color: rgba(255, 255, 255, 0.2);
    border-bottom-color: rgba(255, 255, 255, 0.2);
    border-radius: 16px 0 0 16px;
    transform: translateX(-1px);
}

#crosshair-left.active {
    border-left-color: var(--blue-portal);
    border-top-color: var(--blue-portal);
    border-bottom-color: var(--blue-portal);
    filter: drop-shadow(0 0 4px var(--blue-portal));
}

#crosshair-right {
    border-right-color: rgba(255, 255, 255, 0.2);
    border-top-color: rgba(255, 255, 255, 0.2);
    border-bottom-color: rgba(255, 255, 255, 0.2);
    border-radius: 0 16px 16px 0;
    transform: translateX(1px);
}

#crosshair-right.active {
    border-right-color: var(--orange-portal);
    border-top-color: var(--orange-portal);
    border-bottom-color: var(--orange-portal);
    filter: drop-shadow(0 0 4px var(--orange-portal));
}

.crosshair-dot {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 5px;
    height: 5px;
    background-color: white;
    border-radius: 50%;
    box-shadow: 0 0 2px rgba(0,0,0,0.5);
}

/* HUD System */
#hud {
    position: absolute;
    top: 25px;
    left: 25px;
    pointer-events: none;
    z-index: 10;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.hud-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 16px 22px;
    border-radius: 12px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    min-width: 250px;
}

.hud-card h1 {
    margin: 0 0 8px 0;
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
}

.hud-card h2 {
    margin: 0 0 12px 0;
    font-size: 20px;
    font-weight: 600;
    color: #fff;
    letter-spacing: 0.5px;
}

.hud-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 4px 0;
    font-size: 13px;
    font-family: 'Roboto Mono', monospace;
}

.hud-label {
    opacity: 0.6;
}

.hud-value {
    font-weight: 700;
    color: #fff;
}

.hud-value.blue {
    color: var(--blue-portal);
    text-shadow: 0 0 5px rgba(0, 188, 255, 0.3);
}

.hud-value.orange {
    color: var(--orange-portal);
    text-shadow: 0 0 5px rgba(255, 132, 0, 0.3);
}

.hud-row-tracking {
    display: flex;
    flex-direction: column;
    margin: 6px 0;
    padding: 8px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 8px;
    border: 1px dashed rgba(255, 255, 255, 0.12);
    font-size: 11px;
    font-family: 'Roboto Mono', monospace;
    transition: all 0.3s ease;
}

.hud-sub-label {
    font-weight: 800;
    text-transform: uppercase;
    font-size: 10px;
    letter-spacing: 1px;
    margin-bottom: 3px;
}

.hud-sub-value {
    color: rgba(255, 255, 255, 0.95);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Subtitles / Narrator Speech */
#subtitle-box {
    position: absolute;
    bottom: 8%;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(8, 10, 15, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #ffaa00; /* GLaDOS styled color */
    padding: 14px 28px;
    border-radius: 40px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.5px;
    pointer-events: none;
    z-index: 10;
    transition: opacity 0.3s, transform 0.3s;
    opacity: 0;
    text-align: center;
    max-width: 70%;
    box-shadow: 0 15px 35px rgba(0,0,0,0.6);
    backdrop-filter: blur(10px);
}

#subtitle-box.visible {
    opacity: 1;
    transform: translate(-50%, -5px);
}

/* Control Buttons & Sound */
.top-right-controls {
    position: absolute;
    top: 25px;
    right: 25px;
    z-index: 100;
    display: flex;
    gap: 12px;
}

.ctrl-icon-btn {
    width: 44px;
    height: 44px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    backdrop-filter: blur(12px);
    transition: all 0.2s ease;
    font-size: 18px;
}

.ctrl-icon-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.ctrl-icon-btn:active {
    transform: translateY(0);
}

/* Menus and Screens */
#overlay-screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(12, 16, 26, 0.8) 0%, rgba(5, 7, 10, 0.98) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    transition: opacity 0.5s ease;
}

.menu-box {
    background: rgba(12, 17, 24, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px;
    max-width: 520px;
    width: 90%;
    text-align: center;
    box-shadow: 0 30px 80px rgba(0,0,0,0.8), 0 0 40px rgba(0, 188, 255, 0.05);
    backdrop-filter: blur(20px);
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.menu-box h2 {
    margin-top: 0;
    font-size: 32px;
    font-weight: 800;
    letter-spacing: 2px;
    text-transform: uppercase;
    background: linear-gradient(135deg, #fff 0%, #a2b6d0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 12px;
}

.menu-box p {
    font-size: 15px;
    line-height: 1.6;
    color: #8c9ba5;
    margin-bottom: 25px;
}

.controls-list {
    text-align: left;
    background: rgba(0,0,0,0.4);
    padding: 20px 24px;
    border-radius: 12px;
    margin-bottom: 30px;
    font-size: 13px;
    border: 1px solid rgba(255,255,255,0.03);
    font-family: 'Roboto Mono', monospace;
}

.controls-list div {
    margin: 10px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.controls-list span {
    font-family: 'Outfit', sans-serif;
    color: #8c9ba5;
}

.key {
    background: rgba(255, 255, 255, 0.07);
    padding: 4px 10px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--blue-portal);
    font-size: 12px;
    font-weight: bold;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.1);
}

.btn {
    background: linear-gradient(135deg, var(--blue-portal), #0084ff);
    color: white;
    border: none;
    padding: 16px 45px;
    font-size: 15px;
    font-weight: 700;
    border-radius: 30px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    transition: all 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
    box-shadow: 0 6px 20px rgba(0, 188, 255, 0.35);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 188, 255, 0.5);
    filter: brightness(1.1);
}

.btn:active {
    transform: translateY(1px);
}

/* Settings Toggle switches */
.settings-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 15px 0 25px 0;
    padding: 0 10px;
}

.settings-label {
    font-size: 14px;
    font-weight: 600;
    color: #a2b6d0;
}

.switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 24px;
}

.switch input { 
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255,255,255,0.1);
    transition: .3s;
    border-radius: 24px;
    border: 1px solid rgba(255,255,255,0.15);
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--blue-portal);
}

input:checked + .slider:before {
    transform: translateX(24px);
}

/* Flash Screen Overlay (Acid Damage / Teleport) */
#screen-flash {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.15s ease-out;
}

#screen-flash.damage {
    background-color: rgba(0, 255, 80, 0.25);
}

#screen-flash.teleport {
    background-color: rgba(255, 255, 255, 0.4);
}

#screen-flash.dissolve {
    background-color: rgba(180, 0, 255, 0.3);
}

/* Mobile Controls Overlay */
#mobile-controls {
    display: none;
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 20;
}

.joystick-container {
    position: absolute;
    bottom: 45px;
    left: 45px;
    width: 130px;
    height: 130px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    pointer-events: auto;
    touch-action: none;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.joystick-handle {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 54px;
    height: 54px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 4px 15px rgba(0,0,0,0.6);
    border: 1px solid rgba(255,255,255,0.4);
    transition: background 0.1s;
}

.mobile-btn-container {
    position: absolute;
    bottom: 45px;
    right: 45px;
    display: grid;
    grid-template-columns: repeat(2, 74px);
    gap: 16px;
    pointer-events: auto;
}

.m-btn {
    width: 74px;
    height: 74px;
    border-radius: 50%;
    background: rgba(15, 22, 32, 0.85);
    border: 1.5px solid rgba(255, 255, 255, 0.15);
    color: rgba(255,255,255,0.8);
    font-weight: 700;
    font-size: 13px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
    box-shadow: 0 8px 20px rgba(0,0,0,0.4);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    backdrop-filter: blur(5px);
}

.m-btn:active {
    transform: scale(0.92);
    background: rgba(255, 255, 255, 0.15);
}

#m-btn-blue { border-color: var(--blue-portal); color: var(--blue-portal); box-shadow: 0 4px 15px rgba(0, 188, 255, 0.25); }
#m-btn-orange { border-color: var(--orange-portal); color: var(--orange-portal); box-shadow: 0 4px 15px rgba(255, 132, 0, 0.25); }

/* Responsive adjustments */
@media (max-width: 768px) {
    #hud { display: none; }
    #mobile-controls { display: block; }
}