/* ========================================
   DARK ACADEMIA NIGHT MODE THEME
   ======================================== */

:root {
    --bg-primary: #1a1818;
    --bg-secondary: #242020;
    --bg-tertiary: #2d2626;
    --text-primary: #c9b8a3;
    --text-secondary: #8b7355;
    --text-muted: #5c4d3c;
    --accent-gold: #b8965c;
    --accent-burgundy: #6b2737;
    --accent-green: #3d4c38;
    --border-color: #3d3434;
    --shadow-color: rgba(0, 0, 0, 0.5);
    --encrypted-bg: #2a2222;
    --decrypted-bg: #2d3a2d;
    --warning-bg: #3d3218;
    --warning-border: #8b6914;
    --success-bg: #2d3a2d;
    --success-border: #4a6741;
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--bg-primary);
    background-image: 
        radial-gradient(ellipse at top, rgba(184, 150, 92, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at bottom, rgba(107, 39, 55, 0.05) 0%, transparent 50%);
    font-family: 'Georgia', 'Garamond', 'Palatino', serif;
    margin: 0;
    padding: 20px;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-secondary);
    padding: 50px;
    box-shadow: 
        0 0 30px var(--shadow-color),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    min-height: 85vh;
    border: 1px solid var(--border-color);
    border-radius: 3px;
    position: relative;
}

/* Subtle page texture overlay */
.container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none;
    opacity: 0.5;
}

/* Typography */
h1 {
    font-family: 'Georgia', serif;
    font-weight: normal;
    font-size: 28px;
    letter-spacing: 2px;
    color: var(--accent-gold);
    text-align: center;
    margin-bottom: 10px;
    text-shadow: 0 2px 4px var(--shadow-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
}

h2 {
    font-family: 'Georgia', serif;
    font-weight: normal;
    font-size: 22px;
    letter-spacing: 1px;
    color: var(--accent-gold);
    margin-bottom: 15px;
}

p {
    color: var(--text-secondary);
    font-size: 15px;
}

/* Textarea - The Writing Surface */
textarea {
    width: 100%;
    height: 180px;
    border: 1px solid var(--border-color);
    border-top: 2px solid var(--accent-gold);
    padding: 15px;
    font-family: 'Courier New', 'Consolas', monospace;
    font-size: 15px;
    resize: vertical;
    margin-top: 25px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    line-height: 1.8;
    transition: all 0.3s ease;
    box-shadow: inset 0 2px 10px var(--shadow-color);
}

textarea:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: 
        inset 0 2px 10px var(--shadow-color),
        0 0 15px rgba(184, 150, 92, 0.1);
}

textarea::placeholder {
    color: var(--text-muted);
    font-style: italic;
    line-height: 1.8;
    opacity: 0.7;
}

/* History Section */
.history-box {
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px dashed var(--border-color);
}

.encrypted-text {
    font-family: 'Courier New', monospace;
    font-size: 10px;
    color: var(--text-muted);
    word-break: break-all;
    background: var(--encrypted-bg);
    padding: 3px 6px;
    border: 1px solid var(--border-color);
    border-radius: 2px;
    letter-spacing: 0.5px;
    opacity: 0.6;
    transition: opacity 0.3s ease;
}

.encrypted-text:hover {
    opacity: 1;
    border-color: var(--accent-gold);
}

.decrypted-block {
    background: var(--decrypted-bg);
    padding: 20px;
    margin-bottom: 20px;
    border: 1px solid var(--success-border);
    border-left: 3px solid var(--accent-green);
    border-radius: 2px;
    color: var(--text-primary);
    line-height: 1.7;
}

.decrypted-block strong {
    color: var(--accent-gold);
    font-weight: normal;
    letter-spacing: 1px;
}

/* Buttons */
.btn {
    background: var(--bg-tertiary);
    color: var(--accent-gold);
    border: 1px solid var(--accent-gold);
    padding: 12px 25px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    margin-top: 15px;
    margin-right: 10px;
    font-family: 'Georgia', serif;
    font-size: 14px;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    border-radius: 2px;
}

.btn:hover {
    background: var(--accent-gold);
    color: var(--bg-primary);
    box-shadow: 0 0 20px rgba(184, 150, 92, 0.3);
}

.btn:active {
    transform: translateY(1px);
}

/* Form Elements */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: normal;
    color: var(--text-secondary);
    font-size: 14px;
    letter-spacing: 0.5px;
}

.form-group input {
    width: 100%;
    padding: 12px;
    box-sizing: border-box;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: 'Georgia', serif;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-gold);
}

.form-group input::placeholder {
    color: var(--text-muted);
    font-style: italic;
}

/* Warning & Alert Text */
.warning {
    color: var(--accent-burgundy);
    font-size: 13px;
    font-style: italic;
    border-left: 2px solid var(--accent-burgundy);
    padding-left: 10px;
    margin: 15px 0;
}

.warning-text {
    color: var(--accent-burgundy);
    font-weight: normal;
    font-size: 13px;
    font-style: italic;
}

.question-note {
    font-size: 12px;
    color: var(--text-muted);
    font-style: italic;
    margin-top: 6px;
    padding-left: 10px;
    border-left: 1px solid var(--border-color);
}

/* Key Display Area */
#key-display-area {
    display: none;
    margin-top: 25px;
    padding: 25px;
    background: var(--warning-bg);
    border: 1px solid var(--warning-border);
    border-radius: 2px;
    text-align: center;
}

.master-key-box {
    font-family: 'Courier New', monospace;
    font-size: 14px;
    font-weight: normal;
    background: var(--bg-primary);
    padding: 18px;
    border: 1px solid var(--border-color);
    margin: 20px 0;
    word-break: break-all;
    color: var(--accent-gold);
    letter-spacing: 1px;
    box-shadow: inset 0 2px 10px var(--shadow-color);
}

/* Controls Section */
.controls {
    margin-top: 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

#status {
    color: var(--text-muted);
    font-size: 13px;
    font-style: italic;
    letter-spacing: 0.5px;
}

#timer {
    font-size: 12px;
    color: var(--accent-burgundy);
    font-family: 'Courier New', monospace;
    background: var(--encrypted-bg);
    padding: 4px 10px;
    border-radius: 2px;
    border: 1px solid var(--border-color);
}

#decrypt-status {
    margin-top: 15px;
    font-size: 14px;
    font-style: italic;
}

/* Input for Unlock Page */
#masterKeyInput {
    width: 100%;
    padding: 14px;
    margin: 15px 0;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
    font-size: 14px;
    letter-spacing: 1px;
}

#masterKeyInput:focus {
    outline: none;
    border-color: var(--accent-gold);
}

#masterKeyInput::placeholder {
    color: var(--text-muted);
    font-style: italic;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Selection Color */
::selection {
    background: var(--accent-gold);
    color: var(--bg-primary);
}

::-moz-selection {
    background: var(--accent-gold);
    color: var(--bg-primary);
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .container {
        padding: 30px 20px;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        text-align: center;
        margin-right: 0;
    }
}

/* Fade-in Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.container {
    animation: fadeIn 0.6s ease-out;
}

/* Decorative Divider */
.divider {
    text-align: center;
    margin: 30px 0;
    color: var(--text-muted);
    letter-spacing: 5px;
}

.divider::before,
.divider::after {
    content: '—';
    margin: 0 15px;
    color: var(--border-color);
}