/* --- CSS Custom Properties (Theme Variables) --- */
:root {
    --glow-color: hsl(186, 100%, 50%); /* Default Cyan/Aqua glow */
    --background-start: #0f0f1a; /* Darker, deep space blue */
    --background-end: #000000;   /* Pure black */
    --surface-color: rgba(30, 30, 40, 0.7); /* More opaque, darker glass */
    --border-color: #3a3a4c; /* Darker, subtle border */
    --text-color: #E0E0E0;       /* Lighter gray for better contrast */
    --text-color-muted: #888899; /* Muted gray for secondary text */
    --accent-color: hsl(186, 80%, 60%); /* Derived from glow */
    --shadow-color: rgba(0, 0, 0, 0.7); /* Stronger shadows */
    --modal-backdrop: rgba(10, 10, 15, 0.7); /* Darker modal backdrop */
    --font-main: 'Poppins', sans-serif;
    --transition-speed: 0.3s;
}

/* --- Base & Reset Styles --- */
*, *::before, *::after {
    box-sizing: border-box;
}

body, html {
    margin: 0;
    padding: 0;
    height: 100vh;
    width: 100vw;
    overflow: hidden;
    background: radial-gradient(ellipse at center, var(--background-start) 0%, var(--background-end) 100%);
    font-family: var(--font-main), sans-serif;
    color: var(--text-color);
    cursor: default;
}

/* --- Main App Layout --- */
.app-container {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: 1fr; /* Single row for sidebar and game */
    grid-template-areas: "sidebar game";
    height: 100vh;
    padding: 2vh 1.5vw;
    gap: 1.5vw; /* Adjusted gap to be based on width */
}

/* --- Sidebar Navigation --- */
.side-panel {
    grid-area: sidebar;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2vh;
    padding: 1.5vh 1vw;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 6px 25px var(--shadow-color);
    animation: fadeInLeft 0.8s ease-out;
    z-index: 10;
}

.icon-button {
    position: relative;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: clamp(0.6rem, 1.2vh, 0.8rem);
    border-radius: 50%;
    cursor: pointer;
    transition: background-color var(--transition-speed) ease, transform var(--transition-speed) ease, border-color var(--transition-speed) ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.icon-button svg {
    width: clamp(20px, 2.5vh, 24px);
    height: clamp(20px, 2.5vh, 24px);
    stroke: var(--text-color-muted);
    transition: stroke var(--transition-speed) ease;
}

.icon-button:hover {
    background-color: var(--accent-color);
    transform: scale(1.15);
    border-color: var(--accent-color);
    box-shadow: 0 0 15px var(--accent-color);
}

.icon-button:hover svg {
    stroke: #fff;
}

/* --- Game Wrapper --- */
#game-wrapper {
    grid-area: game;
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 15px 45px var(--shadow-color);
    animation: popIn 1s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000;
}

#game-wrapper::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    border-radius: 16px;
    padding: 4px;
    background: conic-gradient(from var(--angle), var(--glow-color), #0ff0, #0ff8, var(--glow-color));
    animation: spin 4s linear infinite;
    --angle: 0deg;
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    z-index: 1;
    pointer-events: none;
}

#minecraft-container {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

.iframe-error-message {
    display: none;
    padding: 2rem;
    text-align: center;
    color: var(--text-color-muted);
}

.iframe-error-message h3 {
    color: var(--text-color);
    margin-top: 0;
}

/* --- Modal Styles --- */
.modal {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: var(--modal-backdrop);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed) ease, visibility var(--transition-speed) ease;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 20px;
    width: 90%;
    max-width: 550px;
    box-shadow: 0 15px 50px var(--shadow-color);
    position: relative;
    transform: scale(0.9);
    transition: transform var(--transition-speed) cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-header { text-align: center; margin-bottom: 2rem; }
.modal-body { flex-grow: 1; }
.modal-header h2 { font-size: 1.8rem; margin: 0; font-weight: 500; color: var(--text-color); }

.close-button {
    position: absolute;
    top: 1.5rem; right: 1.5rem;
    background: none; border: none; cursor: pointer;
    padding: 0.6rem; border-radius: 50%;
    transition: background-color var(--transition-speed) ease;
}
.close-button svg {
    width: 26px; height: 26px; stroke: var(--text-color-muted);
    transition: stroke var(--transition-speed) ease, transform var(--transition-speed) ease;
}
.close-button:hover { background-color: rgba(255, 255, 255, 0.1); }
.close-button:hover svg { stroke: var(--text-color); transform: rotate(90deg); }

.settings-group { margin-bottom: 2rem; }
.settings-group:last-child { margin-bottom: 0; }
.settings-group label {
    display: block; margin-bottom: 0.85rem; font-weight: 400;
    color: var(--text-color-muted); font-size: 0.95rem; text-align: center;
}

/* Color Palette Picker */
.color-palette { display: flex; gap: 1.2rem; justify-content: center; }
.color-swatch {
    width: 35px; height: 35px; border-radius: 50%; cursor: pointer;
    border: 3px solid transparent;
    transition: transform var(--transition-speed) ease, border-color var(--transition-speed) ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}
.color-swatch.active { border-color: #ffffff; transform: scale(1.15); }

/* New Info Modal Styles */
.controls-showcase {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}
.control-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: rgba(0, 0, 0, 0.2);
    padding: 0.8rem 1.2rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}
.control-label {
    font-size: 1rem;
    color: var(--text-color);
}
.key-group {
    display: flex;
    gap: 0.5rem;
}
.key {
    background-color: #374151;
    color: #fff;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 500;
    border-bottom: 3px solid #1f2937;
    transition: transform 0.1s ease, border-bottom 0.1s ease;
    min-width: 40px; /* For single letters */
    text-align: center;
    font-family: var(--font-main);
}
.key:hover {
    transform: translateY(-2px);
    border-bottom-width: 5px;
}
.wasd-grid {
    display: grid;
    grid-template-columns: repeat(3, 40px);
    grid-template-rows: repeat(2, 40px);
    gap: 0.5rem;
    justify-items: center;
    align-items: center;
}
.wasd-grid .key {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}
.wasd-w { grid-column: 2 / 3; }
.wasd-a { grid-column: 1 / 2; grid-row: 2 / 3; }
.wasd-s { grid-column: 2 / 3; grid-row: 2 / 3; }
.wasd-d { grid-column: 3 / 4; grid-row: 2 / 3; }

.key.large {
    min-width: 140px;
}

/* --- Loader --- */
#loader {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: var(--background-end); display: flex;
    align-items: center; justify-content: center; flex-direction: column;
    z-index: 9999; transition: opacity 0.5s ease;
}
.spinner {
    width: 60px; height: 60px; border: 5px solid var(--border-color);
    border-top: 5px solid var(--glow-color); border-radius: 50%;
    animation: loader-spin 1s cubic-bezier(0.68, -0.55, 0.27, 1.55) infinite;
}
#loader p { font-size: 1.1rem; color: var(--text-color-muted); animation: pulse 1.5s infinite alternate; margin-top: 1.5rem; }
#loader.hidden { opacity: 0; pointer-events: none; }

/* --- Toast Notification --- */
#toast-notification {
    position: fixed;
    top: 2vh;
    left: 50%;
    transform: translate(-50%, -150%);
    background-color: var(--surface-color);
    color: var(--text-color);
    padding: 1rem 2rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    box-shadow: 0 5px 20px var(--shadow-color);
    z-index: 9999;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
#toast-notification.show {
    transform: translate(-50%, 0);
}

/* --- Keyframe Animations --- */
@keyframes spin { to { --angle: 360deg; } }
@keyframes loader-spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
@keyframes popIn { from { transform: scale(0.95); opacity: 0; } to { transform: scale(1); opacity: 1; } }
@keyframes fadeInLeft { from { opacity: 0; transform: translateX(-30px); } to { opacity: 1; transform: translateX(0); } }
@keyframes pulse { from { transform: scale(0.98); opacity: 0.8; } to { transform: scale(1.02); opacity: 1; } }

@property --angle { syntax: '<angle>'; initial-value: 0deg; inherits: false; }