:root {
    --primary-color: #4361ee;
    --primary-light: #4895ef;
    --secondary-color: #3f37c9;
    --text-color: #2b2d42;
    --text-light: #8d99ae;
    --bg-color: #ffffff;
    --bg-secondary: #f8f9fa;
    --border-color: #e9ecef;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    --primary-color: #4895ef;
    --primary-light: #4361ee;
    --secondary-color: #3a0ca3;
    --text-color: #f8f9fa;
    --text-light: #adb5bd;
    --bg-color: #121212;
    --bg-secondary: #1e1e1e;
    --border-color: #333333;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: var(--transition);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    margin-bottom: 2rem;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.search-container {
    width: 100%;
}

.search-box {
    position: relative;
    display: flex;
    width: 100%;
}

#searchInput {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--bg-secondary);
    color: var(--text-color);
}

#searchInput:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.2);
}

#searchButton {
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    padding: 0 1.2rem;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-light);
    transition: var(--transition);
}

#searchButton:hover {
    color: var(--primary-color);
}

.theme-toggle button {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-light);
    transition: var(--transition);
    padding: 0.5rem;
    border-radius: 50%;
}

.theme-toggle button:hover {
    color: var(--primary-color);
    background-color: rgba(67, 97, 238, 0.1);
}

main {
    flex: 1;
}

.dictionary-content {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow);
    min-height: 300px;
    transition: var(--transition);
}

.initial-state, .error-state {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    text-align: center;
}

.welcome-message, .error-message {
    padding: 2rem;
}

.welcome-message i, .error-message i {
    font-size: 3rem;
    color: var(--primary-light);
    margin-bottom: 1rem;
}

.welcome-message h2, .error-message h2 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.welcome-message p, .error-message p {
    color: var(--text-light);
}

.hidden {
    display: none !important;
}

.loading-state {
    height: 100%;
    padding: 1rem;
}

.skeleton-loader {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.skeleton-header {
    width: 60%;
    height: 32px;
    background-color: var(--border-color);
    border-radius: 4px;
    animation: pulse 1.5s infinite ease-in-out;
}

.skeleton-line {
    width: 100%;
    height: 16px;
    background-color: var(--border-color);
    border-radius: 4px;
    animation: pulse 1.5s infinite ease-in-out;
}

.skeleton-line:nth-child(2) {
    width: 90%;
}

.skeleton-line:nth-child(3) {
    width: 80%;
}

.skeleton-line:nth-child(4) {
    width: 70%;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.6;
    }
    50% {
        opacity: 0.3;
    }
}

.word-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    gap: 1rem;
}

.word-info {
    flex: 1;
}

#wordTitle {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.phonetics {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
}

.ipa {
    font-style: italic;
}

.audio-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--primary-color);
    font-size: 1.2rem;
    padding: 0.3rem;
    border-radius: 50%;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.audio-btn:hover {
    background-color: rgba(67, 97, 238, 0.1);
    transform: scale(1.1);
}

.part-of-speech {
    background-color: var(--primary-color);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
}

.definitions-container {
    margin-top: 1.5rem;
}

.definitions-container h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.definitions-list {
    padding-left: 1.5rem;
}

.definitions-list li {
    margin-bottom: 0.8rem;
    color: var(--text-color);
}

footer {
    margin-top: 2rem;
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
}

footer p {
    margin-bottom: 0.5rem;
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

footer a:hover {
    text-decoration: underline;
}

@media (max-width: 600px) {
    .container {
        padding: 1.5rem 1rem;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    .dictionary-content {
        padding: 1.5rem;
    }
    
    #wordTitle {
        font-size: 1.5rem;
    }
    
    .word-header {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .part-of-speech {
        align-self: flex-start;
    }
}