:root {
    --bg-gradient: linear-gradient(135deg, #1f1c2c, #928dab);
    --text-color: #ffffff;
    --container-bg: rgba(255, 255, 255, 0.05);
    --container-border: rgba(255, 255, 255, 0.1);
    --shadow-color: rgba(0, 0, 0, 0.3);
    --footer-text: rgba(255, 255, 255, 0.5);
    --ball-shadow: rgba(0, 0, 0, 0.25);
    --btn-gradient: linear-gradient(135deg, #667eea, #764ba2);
    --btn-hover-shadow: rgba(118, 75, 162, 0.5);
}

body.light-mode {
    --bg-gradient: linear-gradient(135deg, #f5f7fa, #c3cfe2);
    --text-color: #2d3436;
    --container-bg: rgba(255, 255, 255, 0.8);
    --container-border: rgba(0, 0, 0, 0.1);
    --shadow-color: rgba(0, 0, 0, 0.1);
    --footer-text: rgba(0, 0, 0, 0.6);
    --ball-shadow: rgba(0, 0, 0, 0.15);
    --btn-gradient: linear-gradient(135deg, #a1c4fd, #c2e9fb);
    --btn-hover-shadow: rgba(161, 196, 253, 0.5);
}

body {
    font-family: 'Roboto', sans-serif;
    background: var(--bg-gradient);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    overflow-y: auto; /* Changed to auto for scrolling */
    position: relative;
    transition: background 0.5s ease, color 0.5s ease;
    padding: 2rem 0;
}

body::before {
    content: "";
    position: fixed; /* Fixed background */
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 300 300"><filter id="n" x="0" y="0"><feTurbulence type="fractalNoise" baseFrequency="1.5" numOctaves="3" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23n)" opacity="0.1"/></svg>');
    z-index: -1;
}

.theme-toggle {
    position: fixed; /* Fixed button */
    top: 20px;
    right: 20px;
    z-index: 100;
}

#theme-btn {
    background: var(--container-bg);
    border: 1px solid var(--container-border);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    backdrop-filter: blur(5px);
    transition: all 0.3s ease;
}

.container {
    text-align: center;
    padding: 2rem;
    border-radius: 15px;
    background: var(--container-bg);
    backdrop-filter: blur(10px);
    box-shadow: 0 15px 35px var(--shadow-color);
    border: 1px solid var(--container-border);
    transition: background 0.5s ease, box-shadow 0.5s ease;
    max-width: 800px;
    width: 90%;
    margin: 0 auto;
}

h1 {
    font-size: 3rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 0 5px 15px var(--shadow-color);
}

.lotto-card {
    margin-top: 2rem;
    margin-bottom: 3rem;
}

.inquiry-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--container-border);
}

.inquiry-section h3 {
    margin-bottom: 1.5rem;
    font-weight: 400;
}

#inquiry-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 400px;
    margin: 0 auto;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border-radius: 8px;
    border: 1px solid var(--container-border);
    background: var(--container-bg);
    color: var(--text-color);
    font-family: inherit;
    box-sizing: border-box;
}

.form-group textarea {
    height: 100px;
    resize: none;
}

#submit-btn {
    background: var(--btn-gradient);
    color: var(--text-color);
    border: none;
    padding: 0.8rem;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
}

body.light-mode #submit-btn {
    color: #2d3436;
}

#submit-btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.comments-section {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--container-border);
    text-align: left;
}

h2 {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 2rem;
}

.lotto-numbers {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.number-ball {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8rem;
    font-weight: 700;
    color: #fff;
    box-shadow: 0 8px 20px var(--ball-shadow);
    transition: all 0.3s ease;
    transform: translateY(20px);
    opacity: 0;
    animation: appear 0.5s ease forwards;
}

@keyframes appear {
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

#generate-btn {
    background: var(--btn-gradient);
    color: var(--text-color);
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px var(--shadow-color);
}

body.light-mode #generate-btn {
    color: #2d3436;
}

#generate-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--btn-hover-shadow);
}

footer {
    margin-top: 2rem;
    font-size: 0.9rem;
    color: var(--footer-text);
}

/* Color styles for lotto balls */
.color-1 { background-color: #fbc400; } /* Yellow */
.color-2 { background-color: #69c8f2; } /* Blue */
.color-3 { background-color: #ff7272; } /* Red */
.color-4 { background-color: #aaaaaa; } /* Gray */
.color-5 { background-color: #b0d840; } /* Green */