:root {
    --bg-start: #fdfbfb;
    --bg-end: #ebedee;
    --primary-color: #2c3e50;
    --accent-color: #3498db;
    --text-main: #34495e;
    --text-muted: #7f8c8d;
    --card-bg: rgba(255, 255, 255, 0.95);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Noto Sans KR', sans-serif;
    background: linear-gradient(135deg, var(--bg-start) 0%, var(--bg-end) 100%);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
}

.background-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.5) 0%, rgba(0, 0, 0, 0) 100%);
    z-index: -1;
}

.container {
    max-width: 800px;
    width: 90%;
    text-align: center;
    padding: 40px 20px;
    z-index: 1;
}

header h1 {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

header .subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    letter-spacing: 0.1rem;
    margin-bottom: 50px;
}

.quote-card {
    background: var(--card-bg);
    padding: 60px 40px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
    backdrop-filter: blur(5px);
    position: relative;
}

.quote-card:hover {
    transform: translateY(-5px);
}

#quote-container {
    min-height: 150px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

#quote {
    font-family: 'Nanum Myeongjo', serif;
    font-size: 1.8rem;
    line-height: 1.6;
    margin-bottom: 20px;
    font-style: italic;
    word-break: keep-all;
    animation: fadeIn 0.8s ease-out;
}

#author {
    font-size: 1.1rem;
    color: var(--accent-color);
    font-weight: 500;
    display: block;
    margin-top: 10px;
    animation: fadeIn 1.2s ease-out;
}

.actions {
    margin-top: 40px;
}

#new-quote-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 1.1rem;
    font-weight: 500;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(44, 62, 80, 0.3);
}

#new-quote-btn:hover {
    background: var(--accent-color);
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

footer {
    margin-top: 50px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

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

@media (max-width: 600px) {
    header h1 { font-size: 2rem; }
    #quote { font-size: 1.4rem; }
}