@import url('https://fonts.cdnfonts.com/css/digital-7-mono');
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

:root {
    --bg-color: #050505; /* Deep Black */
    --window-bg: #1a1a1a; /* Lighter Charcoal */
    --primary-color: #00ffbd; /* Ghost Green/Cyan */
    --text-color: #ffffff;
    --text-muted: #888888;
    --danger-color: #ff4d4d;
    --font-ui: 'Inter', sans-serif;
    --font-lcd: 'Digital-7 Mono', monospace;
}

html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-ui);
    overflow-x: hidden; /* Prevent horizontal scroll */
}

.screen {
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    padding: 40px;
    display: flex;
    flex-direction: column;
}

/* Vault Grid Layout */
.vault-grid {
    display: grid;
    /* Default to 2 columns of 3 rows for "wide" windows on desktop */
    grid-template-columns: repeat(2, 1fr); 
    gap: 30px;
    margin-top: 30px;
    flex-grow: 1; /* Fill remaining space */
}

.vault-window {
    background-color: var(--window-bg);
    border-radius: 12px;
    box-shadow: inset 4px 4px 12px rgba(0,0,0,0.8),
                inset -1px -1px 2px rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.05);
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    box-sizing: border-box;
    min-height: 150px; /* Ensure some height even if empty */
}

.vault-readout {
    font-family: var(--font-lcd);
    font-size: 48px; /* Enlarged for full screen */
    color: #ffffff; /* WHITE as requested */
    margin-bottom: 10px;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
}

.vault-title {
    font-size: 24px; /* Enlarged */
    color: var(--primary-color); /* CYAN as requested */
    text-transform: uppercase;
    letter-spacing: 2px;
    text-align: center;
    font-weight: bold;
    text-shadow: 0 0 5px rgba(0, 255, 189, 0.4);
}

.disabled-text {
    color: #444;
    font-size: 36px;
}

/* Header Styles */
.main-header-vault {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 20px;
}

.header-logo-small {
    width: 80px; /* Larger logo */
    height: 80px;
    margin-bottom: 15px;
}

.main-header-vault h1 {
    font-family: var(--font-lcd);
    font-size: 56px; /* Larger Title */
    margin: 0;
    letter-spacing: 4px;
    color: #fff;
    text-shadow: 0 0 15px rgba(255,255,255,0.4);
}

/* Back Button */
.back-nav {
    position: absolute;
    top: 30px;
    left: 40px;
}

.back-btn {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.1);
    color: white;
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    font-family: var(--font-ui);
    font-size: 16px;
    transition: background 0.2s;
}

.back-btn:hover {
    background: rgba(255,255,255,0.2);
}

/* Mobile Switch / Responsive Styles */
@media (max-width: 1024px) {
     .vault-grid {
        grid-template-columns: 1fr; /* Stack vertically */
        gap: 20px;
    }
    
    .vault-window {
        min-height: 120px;
    }

    .vault-readout {
        font-size: 36px;
    }

    .vault-title {
        font-size: 18px;
    }

    .main-header-vault h1 {
        font-size: 42px;
    }
    
    .screen {
        padding: 20px;
    }
    
    .back-nav {
        top: 20px;
        left: 20px;
    }
}