:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --accent-pink: #ff2a6d;
    --accent-cyan: #05d9e8;
    --accent-yellow: #f9ed69;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --card-bg: #0f3460;
    --success: #00b894;
    --warning: #fdcb6e;
    --danger: #d63031;
    --font-main: 'Vazirmatn', sans-serif;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-main);
}

.bg-cyber-dark { background-color: var(--bg-primary) !important; }
.bg-cyber-card { background-color: var(--card-bg) !important; }
.text-cyber-pink { color: var(--accent-pink) !important; }
.text-cyber-cyan { color: var(--accent-cyan) !important; }

/* Smooth Gradients */
.bg-gradient-smooth {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

/* Duolingo-style 3D Buttons */
.btn-cyber-primary {
    background-color: var(--accent-cyan);
    color: #000;
    border: none;
    border-bottom: 5px solid #04b0bc;
    border-radius: 15px;
    font-weight: 800;
    transition: all 0.1s;
}

.btn-cyber-primary:active {
    transform: translateY(4px);
    border-bottom: 1px solid #04b0bc;
}

.btn-cyber-secondary {
    background-color: var(--accent-pink);
    color: #fff;
    border: none;
    border-bottom: 5px solid #d41c55;
    border-radius: 15px;
    font-weight: 800;
    transition: all 0.1s;
}

.btn-cyber-secondary:active {
    transform: translateY(4px);
    border-bottom: 1px solid #d41c55;
}

/* Inputs */
.form-control-cyber {
    background-color: var(--bg-secondary);
    border: 2px solid var(--card-bg);
    color: var(--text-primary);
    border-radius: 12px;
}
.form-control-cyber:focus {
    background-color: var(--bg-secondary);
    border-color: var(--accent-cyan);
    color: var(--text-primary);
    box-shadow: 0 0 10px rgba(5, 217, 232, 0.3);
}

/* Cards */
.card-cyber {
    background-color: var(--card-bg);
    border: none;
    border-radius: 20px;
    box-shadow: 0 10px 0 rgba(0,0,0,0.2);
}

/* Animations */
@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

.floating-cat {
    animation: float 3s ease-in-out infinite;
}

/* Checkerboard Background */
.bg-checkerboard {
    background-image: 
        linear-gradient(45deg, #16213e 25%, transparent 25%), 
        linear-gradient(-45deg, #16213e 25%, transparent 25%), 
        linear-gradient(45deg, transparent 75%, #16213e 75%), 
        linear-gradient(-45deg, transparent 75%, #16213e 75%);
    background-size: 40px 40px;
    background-position: 0 0, 0 20px, 20px -20px, -20px 0px;
    opacity: 0.8;
}