:root {
    --primary-color: #6200ee;
    --primary-variant: #3700b3;
    --secondary-color: #03dac6;
    --background: #ffffff;
    --surface: #ffffff;
    --error: #b00020;
    --on-primary: #ffffff;
    --on-secondary: #000000;
    --on-background: #000000;
    --on-surface: #000000;
    --on-error: #ffffff;
}

.dark-mode {
    --primary-color: #bb86fc;
    --primary-variant: #3700b3;
    --secondary-color: #03dac6;
    --background: #121212;
    --surface: #121212;
    --error: #cf6679;
    --on-primary: #000000;
    --on-secondary: #000000;
    --on-background: #ffffff;
    --on-surface: #ffffff;
    --on-error: #000000;
}

body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--background);
    color: var(--on-background);
    transition: background-color 0.3s, color 0.3s;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

nav {
    display: flex;
    gap: 20px;
}

.nav-link {
    color: var(--on-background);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-link:hover {
    color: var(--primary-color);
}

.search-form {
    margin-bottom: 40px;
}

.search-container {
    display: flex;
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.search-input {
    flex-grow: 1;
    padding: 12px 20px;
    padding-top: 20px;
    font-size: 1rem;
    border: 2px solid var(--primary-color);
    border-radius: 30px 0 0 30px;
    outline: none;
    transition: box-shadow 0.3s;
}

.search-input:focus {
    box-shadow: 0 0 0 2px var(--primary-variant);
}

.search-input + label {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
    color: var(--on-surface);
    pointer-events: none;
    transition: 0.2s ease all;
}

.search-input:focus + label,
.search-input.active + label {
    top: 10px;
    font-size: 0.75rem;
    color: var(--primary-color);
}


.search-button {
    background-color: var(--primary-color);
    color: var(--on-primary);
    border: none;
    border-radius: 0 30px 30px 0;
    padding: 12px 20px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.search-button:hover {
    background-color: var(--primary-variant);
}

.message {
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.message.error {
    background-color: var(--error);
    color: var(--on-error);
}

.message.warning {
    background-color: #ffa000;
    color: #000000;
}

.message.info {
    background-color: #2196f3;
    color: #ffffff;
}

.message.success {
    background-color: #4caf50;
    color: #ffffff;
}

.word-card, .daily-word-card, .suggestions-card {
    background-color: var(--surface);
    border-radius: 10px;
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    animation: fadeIn 0.5s ease-out;
}

.word-card:hover, .daily-word-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.2);
}

.word-card h2, .daily-word-card h2 {
    font-size: 2rem;
    margin-top: 0;
    color: var(--primary-color);
}

.daily-word-card h3 {
    font-size: 1.5rem;
    margin-top: 0;
    color: var(--secondary-color);
}

.definition, .pronunciation, .origin {
    margin-bottom: 15px;
    line-height: 1.6;
}

.action-buttons, .share-buttons {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.button {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 10px 15px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.3s, color 0.3s;
}

.button:hover {
    opacity: 0.9;
}

.button .material-icons {
    font-size: 18px;
}

.facebook {
    background-color: #1877f2;
    color: #ffffff;
}

.twitter {
    background-color: #1da1f2;
    color: #ffffff;
}

.suggestions-card ul {
    list-style-type: none;
    padding: 0;
}

.suggestions-card li {
    margin-bottom: 10px;
}

.suggestions-card a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
}

.suggestions-card a:hover {
    color: var(--primary-variant);
}

footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--on-background);
    opacity: 0.7;
}

.dark-mode-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--on-background);
}

.dark-mode-toggle:hover {
    color: var(--primary-color);
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
    }

    nav {
        margin-top: 20px;
    }

    .action-buttons, .share-buttons {
        flex-direction: column;
    }

    .button {
        width: 100%;
        justify-content: center;
    }
}

/* Ripple effect */
.ripple {
    position: absolute;
    border-radius: 50%;
    transform: scale(0);
    animation: ripple 0.6s linear;
    background-color: rgba(255, 255, 255, 0.7);
}

@keyframes ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}


/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--primary-color);
    border-top: 4px solid var(--background);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Fade-in animation for cards */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}