/* --- Custom CSS Variables for Theming --- */
:root {
    --bg-body: #f3f4f6;
    --bg-card: rgba(255, 255, 255, 0.5);
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --border-card: rgba(255, 255, 255, 0.4);
    --toggle-bg: #d1d5db;
    --toggle-ball-bg: #ffffff;
    --accent-color: #008cff;
    --input-bg: rgba(0, 0, 0, 0.05);
}

html.dark {
    --bg-body: #111827;
    --bg-card: rgba(31, 41, 55, 0.5);
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --border-card: rgba(55, 65, 81, 0.5);
    --toggle-bg: #374151;
    --toggle-ball-bg: #111827;
    --input-bg: rgba(0, 0, 0, 0.2);
}

/* --- Applying Variables --- */
body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-body);
    color: var(--text-primary);
    transition: background-color 0.3s;
}
.main-card {
    background-color: var(--bg-card);
    border-color: var(--border-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}
.toggle-bg { background-color: var(--toggle-bg); }
.toggle-ball { background-color: var(--toggle-ball-bg); }
.accent-text { color: var(--accent-color); }
.terms-box { 
    background-color: var(--input-bg); 
    resize: none;
}

/* --- Modal Styling --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
    padding: 1rem;
}
.modal-content {
    background-color: var(--bg-card);
    color: var(--text-primary);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border-card);
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
    text-align: center;
    position: relative;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    width: 100%;
    max-width: 400px;
}

/* --- Animations --- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.fade-in {
    animation: fadeIn 0.5s ease-out forwards;
}