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

:root {
    --bg-color: #f0f2f5;
    --container-bg: white;
    --text-color: #2c3e50;
    --border-color: #e0e0e0;
    --input-bg: white;
    --output-bg: #f8f9fa;
    --shadow-color: rgba(0,0,0,0.1);
    --primary-color: #3498db;
    --success-color: #27ae60;
    --hover-color: #2980b9;
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --container-bg: #2d2d2d;
    --text-color: #e0e0e0;
    --border-color: #404040;
    --input-bg: #3d3d3d;
    --output-bg: #363636;
    --shadow-color: rgba(0,0,0,0.3);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    letter-spacing: 0.01em;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 2.5rem;
    background-color: var(--container-bg);
    border-radius: 20px;
    box-shadow: 0 8px 30px var(--shadow-color);
    transition: all 0.3s ease;
}

h1 {
    text-align: center;
    color: var(--text-color);
    margin-bottom: 2rem;
    font-size: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.title-icon {
    position: relative;
    display: inline-block;
    padding: 10px;
}

.title-icon i {
    color: var(--primary-color);
    font-size: 2.8rem;
    animation: float 3s ease-in-out infinite;
}

.sparkles {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.sparkles i {
    position: absolute;
    font-size: 0.8rem;
    color: var(--primary-color);
    opacity: 0;
}

.sparkles i:nth-child(1) {
    top: 0;
    left: 50%;
    animation: sparkle 2s ease-in-out infinite;
}

.sparkles i:nth-child(2) {
    top: 50%;
    right: 0;
    animation: sparkle 2s ease-in-out infinite 0.4s;
}

.sparkles i:nth-child(3) {
    bottom: 0;
    left: 50%;
    animation: sparkle 2s ease-in-out infinite 0.8s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes sparkle {
    0%, 100% {
        transform: scale(0);
        opacity: 0;
    }
    50% {
        transform: scale(1);
        opacity: 1;
    }
}

.title-icon:hover i {
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: rotate(0); }
    25% { transform: rotate(-10deg); }
    75% { transform: rotate(10deg); }
}

[data-theme="dark"] .title-icon i {
    filter: drop-shadow(0 0 5px var(--primary-color));
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

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

textarea {
    width: 100%;
    height: 200px;
    padding: 1.2rem;
    background-color: var(--input-bg);
    color: var(--text-color);
    border: 2px solid var(--border-color);
    border-radius: 15px;
    resize: vertical;
    font-family: inherit;
    font-size: 16px;
    line-height: 1.6;
    letter-spacing: 0.01em;
    transition: all 0.3s ease;
    box-shadow: inset 0 2px 4px var(--shadow-color);
}

textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

button {
    display: block;
    width: 200px;
    margin: 1.5rem auto;
    padding: 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--shadow-color);
}

button:hover {
    background-color: var(--hover-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--shadow-color);
}

.output-section {
    background-color: var(--output-bg);
    padding: 1.5rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.copy-btn {
    width: auto;
    padding: 0.8rem 1.5rem;
    margin: 0;
    font-size: 14px;
    background-color: var(--success-color);
    border-radius: 25px;
}

.copy-btn:hover {
    background-color: #219a52;
}

.copy-btn.copied {
    background-color: #2ecc71;
}

#correctedText {
    min-height: 100px;
    padding: 1rem;
    white-space: pre-wrap;
    background-color: var(--input-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    font-family: inherit;
    line-height: 1.6;
    letter-spacing: 0.01em;
}

.loading {
    text-align: center;
    margin: 2rem 0;
    padding: 2rem;
}

.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.loading-text {
    display: flex;
    gap: 0.5rem;
}

.loading-text span {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    animation: bounce 1.5s ease infinite;
    display: inline-block;
    text-shadow: 0 1px 1px rgba(0,0,0,0.1);
}

.loading-text span:nth-child(2) { animation-delay: 0.1s; }
.loading-text span:nth-child(3) { animation-delay: 0.2s; }
.loading-text span:nth-child(4) { animation-delay: 0.3s; }
.loading-text span:nth-child(5) { animation-delay: 0.4s; }
.loading-text span:nth-child(6) { animation-delay: 0.5s; }
.loading-text span:nth-child(7) { animation-delay: 0.6s; }
.loading-text span:nth-child(8) { animation-delay: 0.7s; }

.loading-bars {
    display: flex;
    gap: 0.3rem;
    height: 40px;
    align-items: center;
}

.bar {
    width: 4px;
    height: 12px;
    background-color: var(--primary-color);
    border-radius: 10px;
    animation: bars 1s ease-in-out infinite;
}

.bar:nth-child(1) { animation-delay: 0s; }
.bar:nth-child(2) { animation-delay: 0.1s; }
.bar:nth-child(3) { animation-delay: 0.2s; }
.bar:nth-child(4) { animation-delay: 0.3s; }
.bar:nth-child(5) { animation-delay: 0.4s; }

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
        color: var(--hover-color);
    }
}

@keyframes bars {
    0%, 100% {
        height: 12px;
    }
    50% {
        height: 30px;
    }
}

.loading ~ * {
    filter: none;
    opacity: 0.5;
    transition: opacity 0.3s ease;
}

.loading {
    position: relative;
    z-index: 1000;
}

.loading {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.loading.show {
    opacity: 1;
}

@media (max-width: 768px) {
    .container {
        margin: 1rem;
        padding: 1rem;
    }
    
    button {
        width: 100%;
    }
}

.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
}

#themeToggle {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    padding: 0;
    background-color: var(--container-bg);
    color: var(--text-color);
    border: 2px solid var(--border-color);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

#themeToggle:hover {
    transform: scale(1.1);
}

.style-options {
    margin: 1.5rem 0;
    padding: 1.5rem;
    background-color: var(--output-bg);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.style-options h3 {
    margin-bottom: 1rem;
    color: var(--text-color);
    font-size: 1.1rem;
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.checkbox-label {
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="radio"] {
    display: none;
}

.checkbox-custom {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.2rem;
    border-radius: 12px;
    background-color: var(--container-bg);
    border: 2px solid var(--border-color);
    color: var(--text-color);
    transition: all 0.3s ease;
    font-weight: 500;
}

.checkbox-custom i {
    margin-right: 8px;
    font-size: 1.1rem;
}

.checkbox-label input[type="radio"]:checked + .checkbox-custom {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

@media (max-width: 768px) {
    .checkbox-group {
        flex-direction: column;
    }
    
    .checkbox-label {
        width: 100%;
    }
    
    .checkbox-custom {
        display: block;
        text-align: center;
    }
}

.language-selector {
    position: relative;
    margin-bottom: 1.5rem;
    text-align: right;
    z-index: 100;
}

.selected-language {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0.8rem 1.2rem;
    background-color: var(--container-bg);
    border: 2px solid var(--border-color);
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
    color: var(--text-color);
}

.selected-language:hover {
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px var(--shadow-color);
}

.selected-language i {
    font-size: 1rem;
    color: var(--primary-color);
}

.selected-language .fa-chevron-down {
    transition: transform 0.3s ease;
}

.language-selector.active .fa-chevron-down {
    transform: rotate(180deg);
}

.language-dropdown {
    position: absolute;
    top: calc(100% + 5px);
    right: 0;
    background-color: var(--container-bg);
    border: 2px solid var(--border-color);
    border-radius: 15px;
    padding: 0.5rem;
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--shadow-color);
}

.language-selector.active .language-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0.8rem 1rem;
    cursor: pointer;
    border-radius: 10px;
    transition: all 0.2s ease;
    color: var(--text-color);
}

.language-option:hover {
    background-color: var(--output-bg);
}

.language-option.selected {
    background-color: var(--primary-color);
    color: white;
}

.lang-flag {
    font-size: 1.2rem;
}

.lang-name {
    font-weight: 500;
}

@media (max-width: 768px) {
    .language-selector {
        text-align: center;
        margin-bottom: 2rem;
    }

    .language-dropdown {
        right: 50%;
        transform: translateX(50%) translateY(-10px);
    }

    .language-selector.active .language-dropdown {
        transform: translateX(50%) translateY(0);
    }
}

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

/* Add these styles for the footer */
.footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-color);
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer:hover {
    opacity: 1;
}

.footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.footer a:hover {
    color: var(--hover-color);
    text-decoration: underline;
}