:root {
    --bg-color: #EFF3F9;
    --primary-color: #6C5CE7;
    --primary-light: #a29bfe;
    --text-main: #2D3436;
    --text-secondary: #636E72;
    --shadow-light: #ffffff;
    --shadow-dark: #d1d9e6;
    --shadow-inset-light: rgba(255, 255, 255, 0.8);
    --shadow-inset-dark: rgba(209, 217, 230, 0.8);
    --border-radius: 20px;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    padding-bottom: 80px; /* Space for bottom nav */
}

/* Neumorphism Utilities */
.neumorph {
    background: var(--bg-color);
    border-radius: var(--border-radius);
    box-shadow: 6px 6px 12px var(--shadow-dark),
                -6px -6px 12px var(--shadow-light);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.neumorph-inset {
    background: var(--bg-color);
    border-radius: 12px;
    box-shadow: inset 4px 4px 8px var(--shadow-dark),
                inset -4px -4px 8px var(--shadow-light);
    border: none;
    outline: none;
    padding: 12px 16px;
    color: var(--text-main);
    width: 100%;
}

.neumorph-btn {
    background: var(--bg-color);
    border-radius: 12px;
    box-shadow: 4px 4px 8px var(--shadow-dark),
                -4px -4px 8px var(--shadow-light);
    color: var(--primary-color);
    font-weight: 600;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    border: none;
    cursor: pointer;
}

.neumorph-btn:active {
    box-shadow: inset 2px 2px 5px var(--shadow-dark),
                inset -2px -2px 5px var(--shadow-light);
    transform: translateY(1px);
}

.primary-card {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 20px rgba(108, 92, 231, 0.4);
    position: relative;
    overflow: hidden;
}

/* Primary Button (Filled) */
.btn-primary {
    background: var(--primary-color);
    color: white;
    border-radius: 50px;
    padding: 12px 24px;
    font-weight: 600;
    box-shadow: 4px 4px 10px rgba(108, 92, 231, 0.3),
                -4px -4px 10px var(--shadow-light);
    transition: transform 0.2s;
    border: none;
    display: inline-block;
    text-align: center;
    width: 100%;
}

.btn-primary:active {
    transform: scale(0.98);
    box-shadow: inset 2px 2px 5px rgba(0, 0, 0, 0.2);
}

/* Text Utilities */
.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--text-secondary); }
.bg-primary { background-color: var(--primary-color); }

/* Layout Specifics */
.bottom-nav {
    background: var(--bg-color);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.05);
    border-top: 1px solid rgba(255, 255, 255, 0.5);
    padding-bottom: env(safe-area-inset-bottom);
}

.nav-item {
    color: var(--text-secondary);
    transition: color 0.3s;
}

.nav-item.active {
    color: var(--primary-color);
}

.nav-item.active i {
    filter: drop-shadow(0 0 8px rgba(108, 92, 231, 0.4));
}