/* ========================================
   Reset & Base Styles
   ======================================== */

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

:root {
    /* Colors */
    --primary-color: #5fa926;
    --primary-dark: #4a8a1e;
    --secondary-color: #439a00;
    --accent-color: #275900;
    --background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --card-bg: #ffffff;
    --text-dark: #2c3e50;
    --text-light: #6c757d;
    --border-color: #dee2e6;
    --success-color: #28a745;
    --error-color: #dc3545;
    --warning-color: #ffc107;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--background);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   Container & Layout
   ======================================== */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* ========================================
   Header
   ======================================== */

.header {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.logo {
    flex: 1;
    min-width: 300px;
}

.logo h1 {
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: 800;
    margin-bottom: var(--spacing-xs);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.logo h1 i {
    margin-right: var(--spacing-xs);
}

.subtitle {
    font-size: 1rem;
    color: var(--text-light);
    font-weight: 500;
}

/* Language Selector in Header */
.language-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    border: 2px solid var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.language-selector i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.language-selector select {
    border: none;
    background: transparent;
    color: var(--text-dark);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    padding: 4px;
    outline: none;
}

/* ========================================
   Ad Containers
   ======================================== */

.ad-container {
    display: none; /* Hidden by default, shown only when ads load */
    justify-content: center;
    align-items: center;
    margin: var(--spacing-md) auto;
}

.ad-container.ads-loaded {
    display: flex; /* Show when ads are actually loaded */
}

.ad-header {
    margin-bottom: var(--spacing-lg);
}

.ad-placeholder {
    background: #f8f9fa;
    border: 2px dashed #dee2e6;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 0.85rem;
    min-height: 90px;
}

/* ========================================
   Main Layout
   ======================================== */

.main-layout {
    align-items: start;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 1400px) {
    .main-layout {
        grid-template-columns: 180px 1fr 320px;
    }
}

@media (min-width: 1024px) and (max-width: 1399px) {
    .main-layout {
        grid-template-columns: 1fr 320px;
    }
}

/* ========================================
   Compact Tabs
   ======================================== */

.tabs-compact {
    display: inline-flex;
    gap: 4px;
    margin-bottom: var(--spacing-md);
    background: white;
    padding: 4px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.tab-btn-compact {
    padding: 8px 20px;
    background: transparent;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-dark);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    white-space: nowrap;
}

.tab-btn-compact:hover {
    background: #f8f9fa;
}

.tab-btn-compact.active {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 2px 4px rgba(95, 169, 38, 0.2);
}

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

/* Better proportioned tabs on desktop */
@media (min-width: 768px) {
    .tabs-compact {
        align-self: start;
        gap: 6px;
        padding: 5px;
        border-radius: 10px;
        box-shadow: var(--shadow-md);
    }

    .tab-btn-compact {
        padding: 10px 28px;
        font-size: 0.95rem;
        border-radius: 7px;
        gap: 7px;
    }

    .tab-btn-compact i {
        font-size: 1rem;
    }
}

/* ========================================
   Main Content
   ======================================== */

.main-content {
    display: grid;
    gap: var(--spacing-md);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Sidebars
   ======================================== */

.sidebar-left,
.sidebar-right {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

@media (min-width: 1024px) {
    .sidebar-left,
    .sidebar-right {
        position: sticky;
        top: var(--spacing-md);
        height: fit-content;
    }
}

@media (max-width: 1399px) {
    .sidebar-left {
        display: none;
    }
}

@media (max-width: 1023px) {
    .sidebar-right {
        display: none;
    }
}

/* ========================================
   Cards
   ======================================== */

.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

.card h2 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.card h3 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin: var(--spacing-md) 0 var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.description {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
}

/* ========================================
   Form Elements
   ======================================== */

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.input-textarea,
.output-textarea {
    width: 100%;
    min-height: 200px;
    padding: var(--spacing-sm);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    resize: vertical;
    transition: border-color var(--transition-fast);
    background: #f8f9fa;
}

.input-textarea:focus,
.output-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(95, 169, 38, 0.1);
}

.output-textarea {
    background: #e9ecef;
    color: var(--text-dark);
}

/* Select Input */
.select-input {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    background: white;
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.select-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(95, 169, 38, 0.1);
}

/* ========================================
   Radio Buttons
   ======================================== */

.input-type-selector,
.radio-group {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.radio-label:hover {
    background: rgba(0, 0, 0, 0.02);
}

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

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    position: relative;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.radio-label input[type="radio"]:checked + .radio-custom {
    border-color: var(--primary-color);
}

.radio-label input[type="radio"]:checked + .radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary-color);
}

/* ========================================
   File Upload
   ======================================== */

.file-upload-area {
    border: 3px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    background: #f8f9fa;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.file-upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(95, 169, 38, 0.05);
}

.file-upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(95, 169, 38, 0.1);
    transform: scale(1.02);
}

.file-upload-area i {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.file-upload-area p {
    color: var(--text-light);
    margin: var(--spacing-sm) 0;
}

.file-upload-area input[type="file"] {
    display: none;
}

.file-info {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: #e9ecef;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
}

/* ========================================
   Checkboxes
   ======================================== */

.options {
    margin: var(--spacing-md) 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.checkbox-label:hover {
    background: rgba(0, 0, 0, 0.02);
}

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

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    position: relative;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 0.75rem;
}

.checkbox-text {
    color: var(--text-dark);
    font-size: 0.95rem;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    width: 100%;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--accent-color) 100%);
}

.btn-secondary {
    background: linear-gradient(135deg, #6c757d 0%, #5a6268 100%);
    color: white;
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #5a6268 0%, #495057 100%);
}

.btn-outline {
    background: white;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

/* ========================================
   Actions
   ======================================== */

.actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-top: var(--spacing-md);
}

.actions .btn {
    flex: 1;
    min-width: 120px;
}

/* ========================================
   Alerts
   ======================================== */

.alert {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
    display: none;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert.show {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.alert.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert.warning {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

/* ========================================
   Info Card
   ======================================== */

.info-card {
    background: rgba(255, 255, 255, 0.95);
}

.info-card p {
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.info-card ul {
    list-style: none;
    padding: 0;
    margin-bottom: var(--spacing-md);
}

.info-card ul li {
    padding: var(--spacing-xs) 0;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.info-card ul li i {
    color: var(--primary-color);
    font-size: 0.9rem;
}

/* ========================================
   Overview Section (SEO Content)
   ======================================== */

.overview-section {
    margin: var(--spacing-xl) 0;
}

.overview-section .card {
    line-height: 1.8;
}

.overview-section h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.overview-section h3 {
    font-size: 1.4rem;
    color: var(--primary-dark);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.overview-section p {
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
    text-align: justify;
}

.overview-section ul,
.overview-section ol {
    margin: var(--spacing-sm) 0 var(--spacing-md) var(--spacing-lg);
    color: var(--text-dark);
}

.overview-section li {
    margin-bottom: var(--spacing-xs);
}

.overview-section strong {
    color: var(--primary-dark);
}

/* ========================================
   Footer
   ======================================== */

.footer {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg) 0;
}

.footer-content {
    background: rgba(255, 255, 255, 0.95);
    padding: var(--spacing-xl) var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-color);
}

.footer-links a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

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

.footer-info {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.footer-info p {
    color: var(--text-light);
    margin: var(--spacing-xs) 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.copyright {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: var(--spacing-sm);
}

.footer-languages {
    text-align: center;
}

.footer-languages p {
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.language-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.language-links a {
    color: var(--text-dark);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    background: #f8f9fa;
    transition: all var(--transition-fast);
    font-size: 0.9rem;
}

.language-links a:hover {
    background: var(--primary-color);
    color: white;
}

.footer-social {
    text-align: center;
    margin-top: var(--spacing-lg);
}

.footer-social p {
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    font-size: 1.3rem;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.social-links a:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.social-links a i {
    line-height: 1;
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        text-align: center;
    }

    .logo {
        min-width: auto;
    }

    .logo h1 {
        font-size: 1.5rem;
    }

    .subtitle {
        font-size: 0.9rem;
    }

    .tabs-compact {
        flex-direction: column;
    }

    .tab-btn-compact {
        width: 100%;
    }

    .actions {
        flex-direction: column;
    }

    .actions .btn {
        width: 100%;
    }

    .input-textarea,
    .output-textarea {
        min-height: 150px;
        font-size: 0.9rem;
    }

    .footer-links {
        flex-direction: column;
        align-items: center;
    }

    .language-links {
        gap: var(--spacing-xs);
    }

    .language-links a {
        font-size: 0.8rem;
        padding: 4px 8px;
    }

    .overview-section h2 {
        font-size: 1.5rem;
    }

    .overview-section h3 {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: var(--spacing-xs);
    }

    .header,
    .card {
        padding: var(--spacing-md);
    }

    .logo h1 {
        font-size: 1.25rem;
    }

    .btn {
        padding: var(--spacing-sm);
        font-size: 0.9rem;
    }

    .ad-container {
        overflow-x: auto;
    }
}

/* ========================================
   Accessibility
   ======================================== */

:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
    body {
        background: white;
    }

    .tabs-compact,
    .btn,
    .footer,
    .language-selector,
    .ad-container,
    .sidebar-right {
        display: none;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}