:root {
    --primary-color: #7BA5A5;
    --secondary-color: #4B3F72;
    --accent-color: #1F3A8C;
    --text-color: #333;
    --light-text: #666;
    --border-color: #ddd;
    --background-gradient: linear-gradient(135deg, #4B3F72, #1F3A8C);
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --transition-timing: cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    min-height: 100vh;
    background-image: url('../img/background.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    overflow-x: hidden;
}

/* Initial State */
.initial-state {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: fixed;
    inset: 0;
    background-image: url('../img/background.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: opacity 0.5s var(--transition-timing);
    z-index: 1000;
}

.initial-state::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: -1;
}

.initial-state .title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: white;
    margin-bottom: 1.5rem;
    text-align: center;
    transform: translateY(0);
    transition: transform 0.6s var(--transition-timing);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.initial-state .subtitle {
    font-size: clamp(1rem, 3vw, 1.3rem);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
    text-align: center;
    max-width: 80%;
    transform: translateY(0);
    transition: transform 0.6s var(--transition-timing) 0.1s;
}

.initial-state.move-up {
    opacity: 0;
    pointer-events: none;
}

.initial-state.move-up .title {
    transform: translateY(-30px);
}

.initial-state.move-up .subtitle {
    transform: translateY(-30px);
}

/* Header Styles */
header {
    background: var(--background-gradient);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    opacity: 0;
    transform: translateY(-20px);
    transition: all 0.5s var(--transition-timing);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

header.visible {
    opacity: 1;
    transform: translateY(0);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 2rem;
}

.site-title {
    font-size: 1.8rem;
    color: white;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    white-space: nowrap;
}

/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s var(--transition-timing);
}

.main-content.visible {
    opacity: 1;
    transform: translateY(0);
}

.dictionary-content {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s var(--transition-timing);
}

.dictionary-content.visible {
    opacity: 1;
    transform: translateY(0);
}

.search-result-header {
    background: white;
    padding: 1.5rem 2rem;
    margin-bottom: 2rem;
    border-radius: 15px;
    font-size: 1.2rem;
    color: var(--secondary-color);
    box-shadow: var(--card-shadow);
    border-left: 4px solid var(--accent-color);
}

.search-result-header strong {
    color: var(--accent-color);
    font-weight: 700;
}

.copyright-notice {
    text-align: center;
    margin-top: 3rem;
    padding: 2rem;
    color: var(--light-text);
    font-size: 0.9rem;
    line-height: 1.8;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 15px;
    box-shadow: var(--card-shadow);
}