/* --- General Setup & Theming --- */
:root {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    
    /* Light Theme */
    --bg-color: #f4f7f9;
    --text-color: #333;
    --card-bg: #ffffff;
    --primary-color: #007aff;
    --primary-color-hover: #0056b3;
    --nav-link-color: #555;
    --nav-link-active-bg: #e9ecef;
    --border-color: #dee2e6;
    --footer-text-color: #777;
    --result-bg: #f8f9fa;
}

body.dark-mode {
    /* Dark Theme */
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --card-bg: #2a2a2a;
    --primary-color: #0e84ff;
    --primary-color-hover: #3b9dff;
    --nav-link-color: #aaa;
    --nav-link-active-bg: #343a40;
    --border-color: #444;
    --footer-text-color: #888;
    --result-bg: #212121;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* --- Layout --- */
header, nav, main, footer {
    width: 90%;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    padding-bottom: 0;
    position: relative;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.25rem;
}

header p {
    font-size: 1.1rem;
    color: var(--footer-text-color);
}

#theme-toggle-btn {
    position: absolute;
    top: 20px;
    right: 0;
    font-size: 1.5rem;
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
}

nav {
    display: flex;
    justify-content: center;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
}

footer {
    text-align: center;
    padding-top: 40px;
    color: var(--footer-text-color);
    font-size: 0.9rem;
}

/* --- Navigation --- */
.nav-link {
    padding: 10px 20px;
    text-decoration: none;
    color: var(--nav-link-color);
    font-weight: 500;
    border-radius: 6px;
    transition: background-color 0.2s ease;
}

.nav-link:hover {
    background-color: var(--nav-link-active-bg);
}

.nav-link.active {
    background-color: var(--nav-link-active-bg);
    color: var(--text-color);
}

/* --- Generator Sections --- */
.generator {
    display: none; /* Hidden by default */
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.generator.active {
    display: block;
    opacity: 1;
}

.generator h2 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.generator .description {
    font-size: 1rem;
    color: var(--footer-text-color);
    margin-bottom: 25px;
}

.generator-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.result-display {
    width: 100%;
    min-height: 100px;
    background-color: var(--result-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: 500;
}

.generate-btn {
    padding: 12px 25px;
    font-size: 1rem;
    font-weight: 500;
    color: #fff;
    background-color: var(--primary-color);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

.generate-btn:hover {
    background-color: var(--primary-color-hover);
}

.generate-btn:active {
    transform: scale(0.98);
}

/* --- Specific Generator Styles --- */

/* Lotto */
#lotto-numbers .number {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    color: white;
    font-size: 1.5rem;
    font-weight: bold;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* Password */
#password-generator .options {
    display: flex;
    align-items: center;
    gap: 10px;
}
#password-generator input[type="number"] {
    width: 80px;
    padding: 8px;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-color);
    color: var(--text-color);
}
#password-display {
    font-family: 'Courier New', Courier, monospace;
    word-break: break-all;
}

/* Quote */
#quote-display {
    flex-direction: column;
    text-align: center;
}
#quote-text {
    font-size: 1.4rem;
    font-style: italic;
    margin-bottom: 15px;
}
#quote-author {
    font-size: 1rem;
    font-weight: bold;
    color: var(--primary-color);
}

/* --- Responsive Design --- */
@media (max-width: 600px) {
    body {
        font-size: 90%;
    }
    header h1 {
        font-size: 2rem;
    }
    nav {
        flex-direction: column;
        align-items: stretch;
    }
    .nav-link {
        text-align: center;
    }
}

/* Animations for Lotto Numbers */
@keyframes fadeInGrow {
    0% {
        opacity: 0;
        transform: scale(0.5) translateY(20px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.number-animation {
    animation: fadeInGrow 0.5s ease-out forwards;
}