:root {
    --bg: #050505;
    --text: #e0e0e0;
    --accent: #00ffc3; /* Cyberpunk Teal */
    --box-bg: #111;
    --box-border: #333;
    --box-active: #555;
}

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Space Grotesk', sans-serif;
    min-height: 100vh;
    display: flex; flex-direction: column;
}

/* NAV */
.top-nav { padding: 20px; }
.nav-back {
    font-family: 'Space Mono', monospace; font-size: 0.8rem;
    color: var(--text); text-decoration: none; opacity: 0.6;
    transition: opacity 0.2s;
}
.nav-back:hover { opacity: 1; color: var(--accent); }

/* LAYOUT */
.solver-container {
    width: 90%; max-width: 800px;
    margin: 2rem auto;
    text-align: center;
}

header h1 {
    font-family: 'Space Mono', monospace;
    font-size: 2.5rem; letter-spacing: -1px;
    margin-bottom: 0.5rem;
}
header p {
    font-family: 'Space Mono', monospace;
    font-size: 0.8rem; color: #777;
    margin-bottom: 3rem;
}
header p span { color: var(--accent); border: 1px solid var(--accent); padding: 2px 5px; border-radius: 4px; }

/* CONTROLS */
.controls {
    margin-bottom: 20px;
    font-family: 'Space Mono', monospace; font-size: 0.9rem;
}
#length-slider {
    width: 100%; max-width: 300px; margin-top: 10px;
    accent-color: var(--accent);
    cursor: pointer;
}

/* THE GRID (The cool part) */
.grid-wrapper {
    display: flex;
    justify-content: center;
    gap: 6px; /* Slightly tighter gap */
    margin-bottom: 3rem;
    
    /* FORCE SINGLE LINE */
    flex-wrap: nowrap; 
    
    /* Ensure it fills the space so boxes can stretch/shrink */
    width: 100%; 
}

/* Individual Letter Box */
.letter-box {
    /* FLEXIBLE WIDTH LOGIC: */
    /* Grow (1), Shrink (1), Basis (45px) */
    flex: 1 1 45px; 
    
    /* Cap the size so 3-letter words don't look massive */
    max-width: 50px; 
    
    /* Don't let them vanish on tiny screens */
    min-width: 0; 
    
    height: 60px;
    background: var(--box-bg);
    border: 2px solid var(--box-border);
    border-radius: 6px;
    color: #fff;
    font-family: 'Space Grotesk', sans-serif;
    
    /* Responsive Font Size using clamp() */
    /* Minimum 1rem, Preferred 5vw, Max 2rem */
    font-size: clamp(1rem, 2.5vw, 2rem); 
    
    font-weight: 700;
    text-align: center;
    text-transform: uppercase;
    outline: none;
    transition: all 0.2s;
    caret-color: var(--accent);
    padding: 0; /* Remove padding to maximize space */
}

.letter-box:focus {
    border-color: var(--accent);
    box-shadow: 0 0 15px rgba(0, 255, 195, 0.2);
    transform: translateY(-5px);
}

/* When user types a letter */
.letter-box.filled {
    background: #222;
    border-color: #555;
}

/* When user types space/question mark */
.letter-box.unknown {
    color: #444; /* Dim placeholder char */
}

/* ACTION ROW (Keeps buttons aligned) */
.action-row {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 2rem;
}

/* SOLVE BUTTON (Primary) */
.solve-btn {
    background: var(--text); color: var(--bg);
    border: none; padding: 15px 30px;
    font-family: 'Space Mono', monospace; font-size: 1rem; font-weight: bold;
    cursor: pointer; border-radius: 4px;
    transition: transform 0.1s, background 0.2s;
}
.solve-btn:hover {
    background: var(--accent);
    transform: scale(1.05);
}
.solve-btn:active { transform: scale(0.95); }

/* CLEAR BUTTON (Secondary) */
.clear-btn {
    background: transparent;
    border: 1px solid #444;
    color: #888;
    padding: 15px 25px;
    font-family: 'Space Mono', monospace; font-size: 1rem;
    cursor: pointer; border-radius: 4px;
    transition: all 0.2s;
}
.clear-btn:hover {
    border-color: #ff4444;
    color: #ff4444;
}

/* --- DEFINITION CONSOLE (NEW) --- */
.def-console {
    background: rgba(15, 15, 15, 0.8);
    border: 1px solid #333;
    border-left: 4px solid var(--accent); /* Teal Accent Bar */
    padding: 1.5rem;
    margin: 2rem auto 1rem auto; /* Spacing */
    width: 100%;
    max-width: 600px;
    text-align: left;
    backdrop-filter: blur(5px);
    transition: all 0.3s ease;
    opacity: 1;
    transform: translateY(0);
}

.def-console.hidden {
    opacity: 0;
    transform: translateY(10px);
    pointer-events: none;
    height: 0;
    margin: 0;
    padding: 0;
    overflow: hidden;
    border: none;
}

#def-word {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    color: #fff;
    margin-bottom: 0.2rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.def-meta {
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    color: var(--accent);
    margin-bottom: 1rem;
    border-bottom: 1px dashed #333;
    padding-bottom: 0.5rem;
}

#def-text {
    font-family: 'Cormorant Garamond', serif; /* Obscura style font */
    font-size: 1.2rem;
    line-height: 1.4;
    color: #ccc;
}

/* RESULTS */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 15px;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px dashed #333;
}

.result-item {
    background: #111;
    padding: 10px;
    border: 1px solid #222;
    color: var(--accent);
    font-family: 'Space Mono', monospace;
    font-size: 1rem;
    cursor: default;
    transition: background 0.2s;
}
.result-item:hover {
    background: #222;
    border-color: var(--accent);
}

/* Mobile Tweaks */
@media (max-width: 600px) {
    .letter-box { width: 35px; height: 45px; font-size: 1.5rem; }
    header h1 { font-size: 1.8rem; }
}