@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;700;900&display=swap');

:root {
    --background-color-light: #f0f2f5;
    --text-color-light: #212529;
    --card-bg-light: #ffffff;
    --border-color-light: #dee2e6;
    --lotto-wrapper-bg-light: #f8f9fa;
    --selected-color-light: #e9ecef;

    --background-color-dark: #121212;
    --text-color-dark: #e9ecef;
    --card-bg-dark: #1e1e1e;
    --border-color-dark: #495057;
    --lotto-wrapper-bg-dark: #2c2c2c;
    --selected-color-dark: #343a40;

    --font-main: 'Noto Sans KR', sans-serif;
}

[data-theme="light"] {
    --background-color: var(--background-color-light);
    --text-color: var(--text-color-light);
    --card-bg: var(--card-bg-light);
    --border-color: var(--border-color-light);
    --lotto-wrapper-bg: var(--lotto-wrapper-bg-light);
    --selected-color: var(--selected-color-light);
}

[data-theme="dark"] {
    --background-color: var(--background-color-dark);
    --text-color: var(--text-color-dark);
    --card-bg: var(--card-bg-dark);
    --border-color: var(--border-color-dark);
    --lotto-wrapper-bg: var(--lotto-wrapper-bg-dark);
    --selected-color: var(--selected-color-dark);
}

body {
    font-family: var(--font-main);
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s;
}

.main-card {
    background-color: var(--card-bg);
    border-radius: 20px;
    padding: 40px;
    max-width: 550px;
    width: 100%;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    text-align: center;
    border: 1px solid var(--border-color);
    margin-top: 50px;
    margin-bottom: 50px;
}

.mode-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 10px 15px;
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 25px;
    cursor: pointer;
    z-index: 1000;
}

.quote-section, h1, .subtitle {
    text-align: center;
}

#quote-display {
    font-size: 0.95rem;
    color: #6c757d;
    cursor: pointer; 
    user-select: none;
    min-height: 40px;
}

header {
    position: relative;
    margin-bottom: 1.5rem;
}

h1 {
    font-weight: 900;
    font-size: 2.2rem;
    margin: 10px 0;
}

.subtitle {
    color: #868e96;
    margin-bottom: 0;
}

.feature-section {
    margin-bottom: 2rem;
}

.feature-title {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    text-align: left;
}

.number-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(40px, 1fr));
    gap: 8px;
    margin-bottom: 1rem;
}

.grid-number {
    width: 100%;
    aspect-ratio: 1 / 1;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.2s, transform 0.2s;
}

.grid-number:hover {
    transform: scale(1.1);
}

.grid-number.selected {
    background-color: var(--selected-color);
    border-color: #4d7cff;
    color: #4d7cff;
}

.lotto-games-wrapper {
    background-color: var(--lotto-wrapper-bg);
    border-radius: 15px;
    padding: 15px;
    margin-bottom: 2rem;
}

.lotto-set {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 10px 15px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    transition: transform 0.2s, box-shadow 0.2s;
    gap: 10px;
}

.lotto-info {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    flex-grow: 1;
}

.lotto-set:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

.lotto-set:last-child { margin-bottom: 0; }

.set-label {
    flex-shrink: 0;
    font-weight: bold;
    font-size: 1.2rem;
    color: #495057;
}

.numbers-container {
    display: flex;
    flex-wrap: nowrap;
    gap: 5px;
}

.number-circle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-weight: bold;
    font-size: 0.9rem;
    box-shadow: inset 0 -3px 4px rgba(0,0,0,0.15), 0 2px 5px rgba(0,0,0,0.1);
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
    transition: transform 0.2s, box-shadow 0.2s;
    flex-shrink: 0;
}

.number-circle:hover {
    transform: scale(1.15);
    box-shadow: inset 0 -3px 4px rgba(0,0,0,0.2), 0 4px 8px rgba(0,0,0,0.2);
}

.color-yellow { background: linear-gradient(145deg, #FFC107, #FDB813); }
.color-blue   { background: linear-gradient(145deg, #1E90FF, #1C86EE); }
.color-red    { background: linear-gradient(145deg, #DC3545, #C82333); }
.color-gray   { background: linear-gradient(145deg, #6C757D, #5A6268); }
.color-green  { background: linear-gradient(145deg, #28A745, #218838); }

.copy-btn {
    padding: 6px 12px;
    font-size: 0.75rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: transparent;
    color: var(--text-color);
    cursor: pointer;
    flex-shrink: 0;
    white-space: nowrap;
}

.action-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 30px 0;
}

.generate-btn-style, .kakao-btn-style {
    width: 100%;
    max-width: 200px;
    height: 50px;
    border: none;
    color: #fff;
    cursor: pointer;
    border-radius: 12px;
    font-size: 1.1rem;
    font-family: var(--font-main);
    font-weight: bold;
    transition: all 0.2s ease-in-out;
}

.generate-btn-style {
    background: linear-gradient(90deg, #4d7cff, #8b5cf6);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.5);
}

.kakao-btn-style {
    background: #FEE500;
    color: #191919;
    box-shadow: 0 5px 15px rgba(254, 229, 0, 0.4);
}

.generate-btn-style:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.6);
}

.kakao-btn-style:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(254, 229, 0, 0.5);
}

.lookup-container {
    display: flex;
    gap: 10px;
}

.lookup-input {
    flex-grow: 1;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--background-color);
    color: var(--text-color);
}

.lookup-button {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    background-color: #495057;
    color: white;
    cursor: pointer;
}

#lookup-result-container {
    margin-top: 1rem;
    background-color: var(--lotto-wrapper-bg);
    padding: 15px;
    border-radius: 12px;
    min-height: 50px;
}

.divider {
    border: 0;
    height: 1px;
    background-color: var(--border-color);
    margin: 40px auto;
    width: 90%;
}

.info-section { text-align: left; padding: 0 10px; }
.info-section h2 { font-size: 1.1rem; }
footer { text-align: center; padding: 20px 0; font-size: 0.8rem; color: #6c757d; }

@media (max-width: 600px) {
    body { padding: 10px; }
    .main-card { padding: 20px; }
    h1 { font-size: 1.8rem; }
    .action-buttons { flex-direction: column; gap: 10px; }
    .generate-btn-style, .kakao-btn-style { max-width: 100%; }
}

@media (max-width: 420px) {
    .number-circle { 
        width: 32px; 
        height: 32px; 
        font-size: 0.8rem; 
    }
    .lotto-set {
        padding: 10px;
        gap: 5px;
    }
    .set-label {
        font-size: 1rem;
    }
    .copy-btn {
        padding: 5px 8px;
        font-size: 0.7rem;
    }
    .feature-title { font-size: 1.1rem; }
}

@media (min-width: 768px) {
    .lotto-set {
        justify-content: center;
    }
    .lotto-info {
        flex-grow: 0;
    }
}