:root {
    /* Main Theme Colors */
    --bg-color: #0a0a0a;
    --card-bg: #151515;
    --neon-green: #00ff00;
    --text-color: #00ff00;
    --border-color: #004400;
    --shadow: 0 0 15px rgba(0, 255, 0, 0.2);
    
    /* Responsive font sizing */
    --base-font: clamp(14px, 1.5vw, 18px);
}

/* Light Mode Overrides */
.light-mode {
    --bg-color: #f0f0f0;
    --card-bg: #ffffff;
    --neon-green: #008800;
    --text-color: #333333;
    --border-color: #cccccc;
    --shadow: 0 4px 10px rgba(0,0,0,0.1);
}

* { 
    box-sizing: border-box; 
    margin: 0; 
    padding: 0; 
    font-family: 'Courier New', Courier, monospace; 
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: all 0.3s ease;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: clamp(10px, 3vw, 40px);
    font-size: var(--base-font);
}

.container {
    max-width: 1200px;
    width: 100%;
    z-index: 1;
}

header { 
    text-align: center; 
    margin-bottom: clamp(20px, 5vh, 40px); 
}

.glitch-title {
    font-size: clamp(1.5rem, 5vw, 3.5rem);
    text-transform: uppercase;
    letter-spacing: clamp(2px, 1vw, 6px);
    text-shadow: var(--shadow);
}

.cursor { animation: blink 1s infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* --- GRID LAYOUT --- */
.main-grid {
    display: grid;
    /* Auto-calculates columns based on screen width */
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.converter-card {
    background: var(--card-bg);
    padding: clamp(15px, 2vw, 25px);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
}

textarea {
    width: 100%;
    height: clamp(120px, 20vh, 250px);
    background: #000;
    color: var(--neon-green);
    border: 1px solid var(--border-color);
    padding: 12px;
    margin: 10px 0;
    resize: vertical;
    font-size: 1rem;
}

.button-group { 
    display: flex; 
    gap: 10px; 
    flex-wrap: wrap;
    justify-content: center;
}

/* Primary Action Buttons */
.btn-neon {
    flex: 1 1 auto;
    min-width: 120px;
    background: transparent;
    border: 1px solid var(--neon-green);
    color: var(--neon-green);
    padding: 12px;
    cursor: pointer;
    transition: 0.3s;
    font-weight: bold;
    font-size: 0.9rem;
}

.btn-neon:hover {
    background: var(--neon-green);
    color: #000;
    box-shadow: 0 0 20px var(--neon-green);
}

/* Result Area */
.result-box {
    min-height: 150px;
    background: #000;
    padding: 15px;
    border: 1px dashed var(--border-color);
    word-break: break-all;
    margin: 10px 0;
    overflow-y: auto;
    transition: filter 0.4s ease, opacity 0.4s ease;
}

/* --- FUNCTIONAL STATES --- */

/* Secret Mode Blur */
.hidden-msg {
    filter: blur(15px) grayscale(1);
    opacity: 0.15;
    user-select: none;
    pointer-events: none;
}

/* Secret Mode Button Active State */
.active-mode {
    background-color: #ff0000 !important;
    color: #fff !important;
    border-color: #ff0000 !important;
    box-shadow: 0 0 15px #ff0000 !important;
}

/* Utility Small Buttons (History Clear/Toggle) */
.btn-small {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 5px 10px;
    font-size: 0.75rem;
    cursor: pointer;
    transition: 0.2s;
    border-radius: 4px;
}

.btn-small:hover {
    background: rgba(255, 0, 0, 0.1);
    border-color: #ff4444;
}

/* --- MEDIA QUERIES --- */
@media (min-width: 1440px) {
    .container { max-width: 1400px; }
    .main-grid { gap: 40px; }
}

@media (max-width: 1024px) {
    .main-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .main-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    body { padding: 10px; }
    .btn-neon { width: 100%; }
    .converter-card { padding: 12px; }
}

/* Extra Sections & Footer */
.info-section, .history-section {
    margin-top: 30px;
    background: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
}

footer {
    text-align: center;
    margin-top: 50px;
    padding: 20px;
    border-top: 1px solid var(--border-color);
    font-size: 0.8rem;
}
/* Emergency Red Theme */
.emergency-red-mode {
    --bg-color: #2b0000;
    --card-bg: #4a0000;
    --neon-green: #ff3333; /* Turns green text to bright red */
    --text-color: #ffffff;
    --border-color: #ff0000;
    --shadow: 0 0 20px rgba(255, 0, 0, 0.5);
}

/* Ensure textareas and results also turn red */
.emergency-red-mode textarea, 
.emergency-red-mode .result-box {
    border-color: #ff0000 !important;
    color: #ff3333 !important;
}
/* Deep Think Mode - Purple & Blue */
body.deep-think-mode {
    --bg-color: #05001a !important; /* Very deep navy */
    --card-bg: #0d002e !important; /* Dark purple/blue */
    --neon-green: #bc13fe !important; /* Neon Purple */
    --text-color: #00d4ff !important; /* Cyan blue text */
    --border-color: #7a00ff !important; /* Purple border */
    background: radial-gradient(circle, #0d002e 0%, #05001a 100%) !important;
}

/* Force colors for buttons and result boxes */
body.deep-think-mode .btn-neon, 
body.deep-think-mode textarea, 
body.deep-think-mode .result-box,
body.deep-think-mode .converter-card {
    color: #00d4ff !important;
    border-color: #7a00ff !important;
    box-shadow: 0 0 20px rgba(122, 0, 255, 0.4) !important;
    background-color: #000000 !important;
}

/* Change the title shadow to match */
body.deep-think-mode .glitch-title {
    text-shadow: 0 0 15px #bc13fe !important;
}
/* --- BLACK NEON MODE --- */
body.black-neon-mode {
    --bg-color: #000000 !important;
    --card-bg: #050005 !important;
    --text-color: #bc13fe !important;
    --border-color: #bc13fe !important;

    background-color: #000000 !important;
}

/* Neon glow effect */
body.black-neon-mode .btn-neon,
body.black-neon-mode textarea,
body.black-neon-mode .result-box,
body.black-neon-mode .converter-card {
    background-color: #000000 !important;
    color: #bc13fe !important;
    border: 1px solid #bc13fe !important;
    box-shadow: 0 0 15px #bc13fe, 
                0 0 30px rgba(188, 19, 254, 0.6) !important;
}

/* Title glow */
body.black-neon-mode .glitch-title {
    text-shadow: 0 0 10px #bc13fe,
                 0 0 25px #bc13fe,
                 0 0 40px #bc13fe !important;
}