@import url('https://fonts.googleapis.com/css2?family=Nanum+Gothic:wght@700&family=Orbitron:wght@900&display=swap');

:root {
    --bg-color: #1a1a2e;
    --machine-bg: #16213e;
    --display-bg: #0f3460;
    --text-color: #e94560;
    --sub-text-color: #c0c0c0;
    --button-bg: #e94560;
    --button-text: #ffffff;
    --yellow-ball: #f7b731;
    --blue-ball: #4a90e2;
    --red-ball: #e94560;
    --gray-ball: #6c757d;
    --green-ball: #28a745;
    --shadow-color: rgba(0, 0, 0, 0.4);
    --border-color: #0f3460;
}

body.light-mode {
    --bg-color: #f0f2f5;
    --machine-bg: #ffffff;
    --display-bg: #e4e6eb;
    --text-color: #e94560;
    --sub-text-color: #65676b;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --border-color: #dddfe2;
}

body {
    font-family: 'Nanum Gothic', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    margin: 0;
    padding: 40px 20px;
    box-sizing: border-box;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
    width: 100%;
}

#lotto-machine {
    background-color: var(--machine-bg);
    border-radius: 25px;
    padding: 30px 40px;
    text-align: center;
    box-shadow: 0 15px 40px var(--shadow-color), inset 0 -8px 0 rgba(0,0,0,0.1);
    border: 3px solid var(--border-color);
    width: 100%;
    max-width: 500px;
    transition: background-color 0.3s ease, border-color 0.3s ease;
    position: relative;
}

header h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.8rem;
    margin-bottom: 10px;
    text-shadow: 0 0 15px var(--text-color);
}

header p {
    font-size: 1.1rem;
    color: var(--sub-text-color);
    margin-bottom: 30px;
    transition: color 0.3s ease;
}

#numbers-display {
    background-color: var(--display-bg);
    border-radius: 15px;
    padding: 20px;
    min-height: 80px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 30px;
    box-shadow: inset 0 4px 10px rgba(0,0,0,0.2);
    transition: background-color 0.3s ease;
}

.theme-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
    transition: transform 0.2s ease;
}

.theme-toggle:hover {
    transform: rotate(20deg) scale(1.1);
}

.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;
    text-shadow: 0 1px 3px rgba(0,0,0,0.3);
    box-shadow: 0 5px 10px rgba(0,0,0,0.3), inset 0 -4px 0 rgba(0,0,0,0.2);
    animation: appear 0.5s ease-out forwards;
    transform: scale(0);
}

#draw-button {
    background: linear-gradient(145deg, #e94560, #c33a4f);
    color: var(--button-text);
    font-size: 1.2rem;
    font-weight: 700;
    padding: 15px 40px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    box-shadow: 0 5px 15px rgba(233, 69, 96, 0.4);
}

#draw-button:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(233, 69, 96, 0.6);
}

#draw-button:disabled {
    background: #5a6268;
    cursor: not-allowed;
    box-shadow: none;
}

.button-group {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

#wow-button {
    background: linear-gradient(145deg, #4ecdc4, #45b7af);
    color: #fff;
    font-size: 1.2rem;
    font-weight: 700;
    padding: 15px 30px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    box-shadow: 0 5px 15px rgba(78, 205, 196, 0.4);
}

#wow-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(78, 205, 196, 0.6);
}

#wow-button:active {
    transform: translateY(-1px);
}

#partnership {
    width: 100%;
    max-width: 500px;
    background-color: var(--machine-bg);
    border-radius: 25px;
    padding: 30px 40px;
    box-shadow: 0 15px 40px var(--shadow-color);
    border: 3px solid var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
    box-sizing: border-box;
}

#partnership h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    margin-bottom: 20px;
    text-align: center;
    color: var(--text-color);
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 700;
    color: var(--sub-text-color);
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border-radius: 10px;
    border: 2px solid var(--display-bg);
    background-color: var(--display-bg);
    color: var(--sub-text-color);
    font-family: inherit;
    font-size: 1rem;
    box-sizing: border-box;
    transition: border-color 0.2s ease;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--text-color);
}

.submit-button {
    width: 100%;
    background: linear-gradient(145deg, #4ecdc4, #45b7af);
    color: #fff;
    font-size: 1.1rem;
    font-weight: 700;
    padding: 15px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    box-shadow: 0 5px 15px rgba(78, 205, 196, 0.4);
}

.submit-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(78, 205, 196, 0.6);
}

@keyframes appear {
    to {
        transform: scale(1);
    }
}