:root {
    --bg-gradient: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
    --glass-bg: rgba(255, 255, 255, 0.1);
    --text-color: #ffffff;
    --input-bg: rgba(255, 255, 255, 0.2);
    --input-text: #ffffff;
    --border-color: rgba(255, 255, 255, 0.2);
    --shadow-color: rgba(31, 38, 135, 0.37);
    --btn-bg: #ffffff;
    --btn-text: #e73c7e;
    --ball-text: #000000;
}

[data-theme="light"] {
    --bg-gradient: linear-gradient(-45deg, #f3f4f6, #e5e7eb, #d1d5db, #9ca3af);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --text-color: #1f2937;
    --input-bg: rgba(0, 0, 0, 0.05);
    --input-text: #1f2937;
    --border-color: rgba(0, 0, 0, 0.1);
    --shadow-color: rgba(0, 0, 0, 0.1);
    --btn-bg: #1f2937;
    --btn-text: #ffffff;
}

body {
    margin: 0;
    padding: 0;
    width: 100vw;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-gradient);
    background-size: 400% 400%;
    animation: gradient 15s ease infinite;
    overflow-x: hidden;
    transition: background 0.5s ease;
}

@keyframes gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.glass-container {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    box-shadow: 0 8px 32px 0 var(--shadow-color);
    color: var(--text-color);
    width: 90%;
    max-width: 500px;
    margin: 20px;
    transition: all 0.5s ease;
}

.lotto-title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.fade-in {
    opacity: 0;
    animation: fadeIn 2s ease-in forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.theme-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 10px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--glass-bg);
    cursor: pointer;
    backdrop-filter: blur(5px);
    z-index: 1000;
    transition: transform 0.3s ease;
}

.theme-btn:hover {
    transform: scale(1.1);
}

.moon-icon { display: block; }
.sun-icon { display: none; }

[data-theme="light"] .moon-icon { display: none; }
[data-theme="light"] .sun-icon { display: block; }

/* Lotto Styles */
.lotto-numbers-container {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    margin-bottom: 2rem;
    min-height: 60px;
}

.lotto-ball {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    font-size: 1.2rem;
    color: var(--ball-text);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    animation: ballPop 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes ballPop {
    0% { transform: scale(0); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.lotto-main-btn {
    padding: 12px 30px;
    font-size: 1.1rem;
    border-radius: 50px;
    border: none;
    background: var(--btn-bg);
    color: var(--btn-text);
    font-weight: bold;
    cursor: pointer;
    margin-bottom: 2.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 15px var(--shadow-color);
}

.lotto-main-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--shadow-color);
}

.lotto-main-btn:active {
    transform: translateY(0);
}

/* Form Styles */
.form-section {
    margin-top: 1rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

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

.input-group {
    margin-bottom: 1rem;
}

input, textarea {
    width: 100%;
    padding: 12px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--input-bg);
    color: var(--input-text);
    box-sizing: border-box;
    font-size: 1rem;
    transition: outline 0.3s;
}

input::placeholder, textarea::placeholder {
    color: var(--text-color);
    opacity: 0.6;
}

textarea {
    height: 80px;
    resize: vertical;
}

.submit-btn {
    width: 100%;
    padding: 12px;
    border-radius: 10px;
    border: none;
    background: var(--btn-bg);
    color: var(--btn-text);
    font-weight: bold;
    cursor: pointer;
    transition: opacity 0.3s, transform 0.2s;
}

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

/* Comments Section */
.comments-section {
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    text-align: left;
}