/* ==========================================================================
   AETHERIS - Style & Layout Definitions
   ========================================================================== */

:root {
    --bg-dark: #030308;
    --panel-bg: rgba(9, 14, 26, 0.92);
    --panel-border: rgba(0, 240, 255, 0.35);
    --panel-shadow: 0 12px 32px rgba(0, 0, 0, 0.6), 0 0 15px rgba(0, 240, 255, 0.1);
    --cyan-glow: #00f0ff;
    --magenta-glow: #ff00a0;
    --purple-glow: #7000ff;
    --gold-glow: #ffaa00;
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Rajdhani', sans-serif;
}

* {
    box-sizing: border-box;
    user-select: none;
    -webkit-user-select: none;
    margin: 0;
    padding: 0;
}

body, html {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--bg-dark);
    font-family: var(--font-body);
    color: #ffffff;
}

/* 3D Viewport */
#canvas-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* Glass & Solid Panel Common Styling */
.glass-panel {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    box-shadow: var(--panel-shadow);
    border-radius: 12px;
}

/* ==========================================================================
   HUD Layout (Desktop & Mobile Unified Header)
   ========================================================================== */

.hud-container {
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 10px 20px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 40px;
    box-shadow: var(--panel-shadow);
    transition: opacity 0.4s ease;
    pointer-events: auto;
}

.hud-container.dimmed {
    opacity: 0.45;
}

.hud-container:hover {
    opacity: 1 !important;
}

.hud-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 65px;
}

.hud-label {
    font-family: var(--font-heading);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: var(--cyan-glow);
    text-transform: uppercase;
}

.hud-value {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 800;
    color: #ffffff;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.6);
}

.preview-item {
    min-width: 50px;
}

.preview-box {
    width: 42px;
    height: 42px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hud-btn-menu {
    background: rgba(0, 240, 255, 0.12);
    border: 1px solid var(--cyan-glow);
    color: var(--cyan-glow);
    font-size: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    outline: none;
}

.hud-btn-menu:hover {
    background: var(--cyan-glow);
    color: var(--bg-dark);
    box-shadow: 0 0 12px var(--cyan-glow);
}

/* ==========================================================================
   Mobile On-Screen Touch Controls
   ========================================================================== */

#mobile-controls {
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 100%;
    z-index: 20;
    display: none;
    justify-content: space-between;
    padding: 0 24px;
    pointer-events: auto;
    transition: opacity 0.4s ease;
}

#mobile-controls.dimmed {
    opacity: 0.45;
}

.dpad {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.dpad-row {
    display: flex;
    gap: 6px;
}

.touch-btn {
    width: 52px;
    height: 52px;
    background: rgba(9, 14, 26, 0.9);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    color: var(--cyan-glow);
    font-family: var(--font-heading);
    font-weight: bold;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    touch-action: manipulation;
    outline: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    transition: background 0.1s ease, transform 0.1s ease;
}

.touch-btn:active {
    background: var(--cyan-glow);
    color: var(--bg-dark);
    transform: scale(0.92);
}

.drop-btn {
    width: 80px;
    height: 110px;
    background: rgba(255, 0, 160, 0.15);
    border-color: var(--magenta-glow);
    color: var(--magenta-glow);
    font-size: 14px;
    letter-spacing: 1px;
}

.drop-btn:active {
    background: var(--magenta-glow);
    color: #ffffff;
}

/* ==========================================================================
   Overlay Modals & Menus
   ========================================================================== */

.overlay-screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 100;
    background: rgba(3, 3, 8, 0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
}

.overlay-screen.active {
    opacity: 1;
    pointer-events: auto;
}

.menu-card {
    padding: 32px 48px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 440px;
    width: 90%;
}

.game-title {
    font-family: var(--font-heading);
    font-size: 48px;
    font-weight: 900;
    letter-spacing: 6px;
    background: linear-gradient(135deg, var(--cyan-glow), var(--magenta-glow), var(--purple-glow));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px rgba(0, 240, 255, 0.4);
    margin-bottom: 4px;
}

.game-subtitle {
    font-family: var(--font-heading);
    font-size: 14px;
    letter-spacing: 4px;
    color: #8a92b2;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.game-attribution {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.45);
    margin-bottom: 24px;
    font-style: italic;
}

.menu-title {
    font-family: var(--font-heading);
    font-size: 32px;
    font-weight: 800;
    letter-spacing: 3px;
    color: var(--cyan-glow);
    margin-bottom: 20px;
}

.danger-title {
    color: var(--magenta-glow);
}

.menu-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
}

.btn-cyber {
    font-family: var(--font-heading);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 2px;
    padding: 12px 28px;
    color: var(--cyan-glow);
    background: rgba(0, 240, 255, 0.08);
    border: 1px solid var(--cyan-glow);
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.2s ease;
    outline: none;
    width: 100%;
}

.btn-cyber:hover {
    background: var(--cyan-glow);
    color: var(--bg-dark);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.6);
    transform: translateY(-2px);
}

.btn-secondary {
    border-color: rgba(255, 255, 255, 0.3);
    color: rgba(255, 255, 255, 0.7);
}

.btn-secondary:hover {
    background: #ffffff;
    color: var(--bg-dark);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
}

.controls-card {
    margin-top: 20px;
    padding: 14px 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 13px;
    color: #8a92b2;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
    text-align: left;
}

.controls-card span {
    color: var(--cyan-glow);
    font-weight: 700;
}

.score-display {
    margin: 16px 0 24px 0;
}

.highlight-value {
    font-size: 36px;
    color: var(--cyan-glow);
}

.high-score-banner {
    color: var(--magenta-glow);
    font-weight: bold;
    font-family: var(--font-heading);
    margin-top: 8px;
    font-size: 12px;
    letter-spacing: 2px;
}

/* FPS Display */
#fps-display {
    position: absolute;
    bottom: 8px;
    right: 12px;
    font-family: monospace;
    font-size: 10px;
    color: rgba(255, 255, 255, 0.3);
    z-index: 10;
    pointer-events: none;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (min-width: 901px) {
    .desktop-only {
        display: flex;
    }
}

@media (max-width: 900px) {
    .desktop-only {
        display: none;
    }

    #mobile-controls {
        display: flex;
    }

    .hud-container {
        top: 10px;
        padding: 6px 14px;
        gap: 10px;
    }

    .hud-item {
        min-width: 45px;
    }

    .hud-label {
        font-size: 8px;
    }

    .hud-value {
        font-size: 15px;
    }

    .preview-box {
        width: 32px;
        height: 32px;
    }

    .game-title {
        font-size: 32px;
    }

    .menu-card {
        padding: 24px;
    }
}