/* -------------------------------------------------------------
   DAILY SNAKE - BLUEPRINT ARCHITECT: VECTOR MATRIX (2026-08-03)
   Aesthetic: Cyanotype Architectural Engineering Blueprint & Vector Glow
   ------------------------------------------------------------- */

:root {
    --bg-dark: #061120;
    --bg-blueprint: #0a1b36;
    --blue-grid: rgba(0, 229, 255, 0.12);
    --blue-grid-bright: rgba(0, 229, 255, 0.28);
    
    --cyan-glow: #00e5ff;
    --cyan-bright: #64ffda;
    --gold-glow: #ffd700;
    --gold-amber: #ffaa00;
    --blue-accent: #2979ff;
    --white-draft: #e0f7fa;
    --text-muted: #78909c;

    --font-mono: 'Fira Code', monospace;
    --font-heading: 'Space Grotesk', 'Outfit', sans-serif;
    --font-body: 'Noto Sans SC', sans-serif;

    --panel-border: rgba(0, 229, 255, 0.35);
    --shadow-cyan: 0 0 20px rgba(0, 229, 255, 0.3);
}

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

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

/* Background Cyanotype Blueprint Grid */
.blueprint-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    background: radial-gradient(circle at 50% 50%, #0d274c 0%, #061120 100%);
}

.cyanotype-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(to right, var(--blue-grid) 1px, transparent 1px),
        linear-gradient(to bottom, var(--blue-grid) 1px, transparent 1px);
    background-size: 32px 32px;
    opacity: 0.8;
}

.isometric-guide-lines {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(45deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px),
        linear-gradient(-45deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px);
    background-size: 64px 64px;
}

.drafting-vignette {
    position: absolute;
    inset: 0;
    box-shadow: inset 0 0 100px rgba(6, 17, 32, 0.85);
    pointer-events: none;
}

/* Main Container */
.app-container {
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: column;
    width: 100vw;
    height: 100vh;
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 16px;
}

/* Header */
.game-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    background: rgba(10, 27, 54, 0.75);
    border: 1px solid var(--panel-border);
    backdrop-filter: blur(12px);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.back-link {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--cyan-glow);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 600;
    padding: 6px 12px;
    border: 1px solid rgba(0, 229, 255, 0.3);
    border-radius: 6px;
    transition: all 0.2s ease;
}

.back-link:hover {
    background: rgba(0, 229, 255, 0.15);
    border-color: var(--cyan-glow);
    box-shadow: 0 0 12px rgba(0, 229, 255, 0.4);
}

.header-title {
    text-align: center;
}

.header-title h1 {
    font-family: var(--font-heading);
    font-size: 18px;
    letter-spacing: 2px;
    color: #ffffff;
}

.header-title h1 span {
    color: var(--cyan-glow);
    text-shadow: 0 0 10px var(--cyan-glow);
}

.header-title .subtitle {
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.header-controls {
    display: flex;
    gap: 8px;
}

.icon-btn {
    background: rgba(10, 27, 54, 0.8);
    border: 1px solid rgba(0, 229, 255, 0.3);
    color: var(--cyan-glow);
    width: 36px;
    height: 36px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.icon-btn:hover {
    background: rgba(0, 229, 255, 0.2);
    border-color: var(--cyan-glow);
    transform: translateY(-1px);
}

/* HUD Panel */
.hud-panel {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin: 10px 0;
}

.hud-box {
    background: rgba(10, 27, 54, 0.65);
    border: 1px solid rgba(0, 229, 255, 0.25);
    padding: 8px 12px;
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hud-label {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.hud-val {
    font-family: var(--font-mono);
    font-size: 20px;
    font-weight: 700;
}

.glow-cyan {
    color: var(--cyan-glow);
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
}

.glow-blue {
    color: #448aff;
}

.glow-gold {
    color: var(--gold-glow);
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

/* Gauge Energy Bar */
.gauge-box {
    grid-column: span 1;
}

.energy-bar-container {
    position: relative;
    height: 20px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(0, 229, 255, 0.3);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 4px;
}

.energy-bar-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #0091ea, var(--cyan-glow), var(--gold-glow));
    transition: width 0.2s linear;
    box-shadow: 0 0 12px var(--cyan-glow);
}

.energy-text {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    color: #ffffff;
    text-shadow: 0 1px 3px rgba(0,0,0,0.8);
}

/* Game Viewport Container */
.game-viewport-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    min-height: 0;
}

.canvas-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    max-width: 900px;
    max-height: 600px;
    background: #08162b;
    border: 2px solid var(--panel-border);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), inset 0 0 30px rgba(0, 229, 255, 0.1);
}

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

/* Technical Overlay Callouts */
.canvas-technical-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.drafting-corner {
    position: absolute;
    font-family: var(--font-mono);
    font-size: 10px;
    color: rgba(0, 229, 255, 0.5);
    letter-spacing: 1px;
    background: rgba(6, 17, 32, 0.5);
    padding: 2px 6px;
    border-radius: 3px;
}

.top-left { top: 8px; left: 8px; }
.top-right { top: 8px; right: 8px; }
.bottom-left { bottom: 8px; left: 8px; }
.bottom-right { bottom: 8px; right: 8px; }

/* Overlay Screen / Modal */
.overlay-screen {
    position: absolute;
    inset: 0;
    background: rgba(6, 17, 32, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 30;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

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

.modal-card {
    position: relative;
    width: 90%;
    max-width: 440px;
    background: rgba(10, 27, 54, 0.95);
    border: 2px solid var(--cyan-glow);
    border-radius: 12px;
    padding: 28px 24px;
    text-align: center;
    box-shadow: 0 0 30px rgba(0, 229, 255, 0.25);
}

.blueprint-stamp {
    position: absolute;
    top: 16px;
    right: 16px;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    color: var(--cyan-bright);
    border: 1px solid var(--cyan-bright);
    padding: 2px 8px;
    border-radius: 3px;
    transform: rotate(6deg);
    opacity: 0.8;
}

.modal-title {
    font-family: var(--font-heading);
    font-size: 22px;
    color: #ffffff;
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.modal-desc {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 20px;
}

.modal-desc strong {
    color: var(--cyan-glow);
}

.modal-desc kbd {
    background: rgba(0, 229, 255, 0.2);
    border: 1px solid var(--cyan-glow);
    border-radius: 3px;
    padding: 1px 5px;
    font-family: var(--font-mono);
    color: #ffffff;
}

.score-summary {
    background: rgba(0, 0, 0, 0.4);
    border: 1px dashed rgba(0, 229, 255, 0.3);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 20px;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    margin: 6px 0;
    color: var(--text-muted);
}

.summary-item strong {
    font-family: var(--font-mono);
    color: var(--cyan-glow);
    font-size: 15px;
}

.primary-btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #0091ea, var(--cyan-glow));
    border: none;
    border-radius: 6px;
    color: #040c1a;
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
    box-shadow: 0 0 15px rgba(0, 229, 255, 0.4);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 25px rgba(0, 229, 255, 0.7);
    filter: brightness(1.1);
}

/* Mobile Controls Panel */
.mobile-controls-panel {
    display: none;
    justify-content: space-around;
    align-items: center;
    padding-top: 10px;
}

.dpad {
    display: grid;
    grid-template-columns: repeat(3, 44px);
    grid-template-rows: repeat(3, 44px);
    gap: 4px;
}

.dpad-btn {
    background: rgba(10, 27, 54, 0.8);
    border: 1px solid rgba(0, 229, 255, 0.4);
    color: var(--cyan-glow);
    border-radius: 8px;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.dpad-btn:active {
    background: var(--cyan-glow);
    color: #040c1a;
}

.dpad-up { grid-column: 2; grid-row: 1; }
.dpad-left { grid-column: 1; grid-row: 2; }
.dpad-center { grid-column: 2; grid-row: 2; opacity: 0.3; }
.dpad-right { grid-column: 3; grid-row: 2; }
.dpad-down { grid-column: 2; grid-row: 3; }

.action-panel {
    display: flex;
    align-items: center;
}

.action-btn {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--cyan-glow), #0091ea);
    border: 2px solid #ffffff;
    color: #040c1a;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.5);
}

.action-btn:active {
    transform: scale(0.92);
}

.btn-icon { font-size: 20px; }
.btn-text { font-size: 11px; }
.action-btn small { font-size: 8px; opacity: 0.8; }

/* Responsive adjustments */
@media (max-width: 768px) {
    .hud-panel {
        grid-template-columns: repeat(2, 1fr);
    }
    .mobile-controls-panel {
        display: flex;
    }
    .app-container {
        padding: 8px;
    }
}