/* Base Styles */
:root {
    --primary-color: #4a6bff;
    --secondary-color: #f8f9fa;
    --text-color: #333;
    --light-text: #6c757d;
    --border-color: #dee2e6;
    --success-color: #28a745;
    --error-color: #dc3545;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #f5f7ff;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    flex: 1;
}

/* Header Styles */
header {
    text-align: center;
   /*  margin: 30px 0;*/
}

h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--light-text);
}

/* Converter Section */
.converter-section {
    background-color: white;
    border-radius: 10px;
    box-shadow: var(--shadow);
    padding: 25px;
    margin-bottom: 30px;
}

.converter-container {
    display: flex;
    flex-direction: column;
}

.toolbar {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.tool-btn {
    padding: 10px 15px;
    border: none;
    border-radius: 5px;
    background-color: var(--secondary-color);
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    font-size: 0.9rem;
}

.tool-btn:hover {
    background-color: #e9ecef;
}

.tool-btn.primary {
    background-color: var(--primary-color);
    color: white;
}

.tool-btn.primary:hover {
    background-color: #3a5bef;
}

.tool-btn i {
    font-size: 0.9rem;
}

#textInput {
    width: 100%;
    min-height: 200px;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
    resize: vertical;
    margin-bottom: 20px;
    transition: var(--transition);
}

#textInput:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 107, 255, 0.2);
}

.file-upload {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.upload-btn {
    padding: 12px 20px;
    background-color: var(--secondary-color);
    color: var(--text-color);
    border-radius: 5px;
    cursor: pointer;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition);
    font-size: 0.95rem;
}

.upload-btn:hover {
    background-color: #e9ecef;
}

#fileInput {
    display: none;
}

.drop-area {
    border: 2px dashed var(--border-color);
    border-radius: 5px;
    padding: 30px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--light-text);
}

.drop-area i {
    font-size: 2rem;
    color: var(--primary-color);
}

.drop-area p {
    margin: 0;
}

.drop-area.highlight {
    border-color: var(--primary-color);
    background-color: rgba(74, 107, 255, 0.05);
}

/* Info Article */
.info-article {
    background-color: white;
    border-radius: 10px;
    box-shadow: var(--shadow);
    padding: 30px;
    margin-bottom: 30px;
}

.info-article h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.8rem;
}

.info-article h3 {
    margin: 25px 0 15px;
    font-size: 1.4rem;
    color: var(--text-color);
}

.info-article h4 {
    margin: 20px 0 10px;
    font-size: 1.2rem;
}

.info-article p, .info-article li {
    margin-bottom: 15px;
    font-size: 1rem;
    color: var(--text-color);
}

.info-article ul, .info-article ol {
    margin-left: 20px;
    margin-bottom: 20px;
}

.use-cases {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin: 25px 0;
}

.use-case {
    background-color: var(--secondary-color);
    padding: 20px;
    border-radius: 8px;
    transition: var(--transition);
}

.use-case:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.use-case h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-color);
}

.use-case h4 i {
    font-size: 1.2rem;
}

.example {
    background-color: #f8f9fa;
    border-left: 4px solid var(--primary-color);
    padding: 15px;
    margin: 25px 0;
}

/* Ad Placeholders */
.ad-banner {
    width: 100%;
    padding: 15px 0;
    background-color: #f1f3ff;
    text-align: center;
}

.ad-content {
    margin: 25px 0;
    text-align: center;
}

.sidebar {
    display: none;
}

.ad-placeholder {
    padding: 30px;
    background-color: #e9ecef;
    color: var(--light-text);
    border-radius: 5px;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    background-color: white;
    margin-top: 40px;
    font-size: 0.9rem;
    color: var(--light-text);
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 15px 25px;
    background-color: var(--success-color);
    color: white;
    border-radius: 5px;
    box-shadow: var(--shadow);
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition);
    z-index: 1000;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

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

/* Responsive Design */
@media (min-width: 768px) {
    .container {
        display: grid;
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 0 30px;
    }

    .use-cases {
        grid-template-columns: repeat(2, 1fr);
    }

    .sidebar {
        display: block;
        position: fixed;
        right: 20px;
        top: 150px;
        width: 160px;
    }
}

@media (min-width: 992px) {
    .container {
        grid-template-columns: 1fr 200px;
    }

    .sidebar {
        position: static;
        width: auto;
        grid-column: 2;
        grid-row: 1 / span 2;
    }

    main {
        grid-column: 1;
    }

    .use-cases {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1200px) {
    .use-cases {
        grid-template-columns: repeat(4, 1fr);
    }
}