:root {
    --primary-color: #0d6efd;
    --primary-hover: #0b5ed7;
    --text-color: #212529;
    --border-color: #dee2e6;
    --bg-color: #f8f9fa;
    --card-bg: #fff;
    --card-header-bg: #f8f9fa;
    --navbar-brand-color: #212529;
}

:root[data-theme="dark"] {
    --text-color: #ffffff;
    --bs-heading-color: #ffffff;
    --border-color: #495057;
    --bg-color: #212529;
    --card-bg: #343a40;
    --card-header-bg: #2b3035;
    --navbar-brand-color: #ffffff;
}

:root[data-theme="dark"] p {
    color: #ffffff !important;
}

:root[data-theme="dark"] h3 {
    color: #ffffff !important;
}

:root[data-theme="dark"] .card-header {
    color: #ffffff !important;
}

#constraints-panel {
    border-color: var(--border-color);
}

:root[data-theme="dark"] #constraints-panel {
    color: #ffffff !important;
    border-color: var(--border-color) !important;
}

:root[data-theme="dark"] .container-fluid {
    color: #ffffff !important;
}

:root[data-theme="dark"] .form-label {
    color: #ffffff !important;
}

:root[data-theme="dark"] .form-select {
    color: #ffffff !important;
}

:root[data-theme="dark"] .form-select option {
    background-color: #343a40;
    color: #ffffff;
}

:root[data-theme="dark"] .form-control {
    color: #ffffff !important;
}

:root[data-theme="dark"] .form-control::placeholder {
    color: #adb5bd !important;
    opacity: 1;
}

:root[data-theme="dark"] .card-body {
    color: #ffffff !important;
}

:root[data-theme="dark"] .display-4 {
    color: #ffffff !important;
}

:root[data-theme="dark"] .lead {
    color: #ffffff !important;
}

:root[data-theme="dark"] .navbar {
    background-color: var(--card-bg) !important;
}

.navbar-brand {
    color: var(--navbar-brand-color) !important;
    transition: color 0.3s ease;
}

.navbar-brand:hover {
    color: var(--primary-color) !important;
}

:root[data-theme="dark"] .navbar-brand:hover {
    color: #adb5bd !important;
}

:root[data-theme="dark"] .btn-outline-primary {
    color: #ffffff !important;
    border-color: var(--primary-color) !important;
}

:root[data-theme="dark"] .btn-outline-primary:hover {
    background-color: var(--primary-color) !important;
    color: #ffffff !important;
}

:root[data-theme="dark"] .btn-outline-danger {
    color: #ffffff !important;
    border-color: #dc3545 !important;
}

:root[data-theme="dark"] .btn-outline-danger:hover {
    background-color: #dc3545 !important;
    color: #ffffff !important;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* RTL Support */
html[dir="rtl"] body {
    font-family: 'Tajawal', sans-serif;
}

html[dir="rtl"] .me-1 {
    margin-left: 0.25rem !important;
    margin-right: 0 !important;
}

html[dir="rtl"] .me-2 {
    margin-left: 0.5rem !important;
    margin-right: 0 !important;
}

.card {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.card-header {
    background-color: var(--card-header-bg);
    border-bottom-color: var(--border-color);
}

textarea.form-control {
    background-color: var(--card-bg);
    color: var(--text-color);
    border-color: var(--border-color);
}

textarea.form-control:focus {
    background-color: var(--card-bg);
    color: var(--text-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

select.form-select {
    background-color: var(--card-bg);
    color: var(--text-color);
    border-color: var(--border-color);
}

.text-muted {
    color: var(--text-color) !important;
    opacity: 0.7;
}

.char-count {
    color: var(--text-color) !important;
    opacity: 0.7;
}

#theme-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

#theme-toggle:hover {
    background-color: var(--primary-hover);
    transform: scale(1.05);
}

html[dir="rtl"] #theme-toggle {
    right: auto;
    left: 20px;
}

html[dir="rtl"] .ms-auto {
    margin-right: auto !important;
    margin-left: 0 !important;
}

/* Custom Styles */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

textarea {
    min-height: 150px;
    resize: vertical;
}

.variation .card-header {
    background-color: rgba(13, 110, 253, 0.05);
    color: var(--text-color);
}

:root[data-theme="dark"] .variation .card-header {
    background-color: rgba(13, 110, 253, 0.15);
}

.copy-btn:not(:hover) {
    transition: all 0.3s ease;
}

.copy-btn:hover {
    transform: translateY(-1px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    header h1 {
        font-size: 2rem;
    }
}

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

.results-section {
    animation: fadeIn 0.5s ease-out;
    border-radius: 6px;
    margin-bottom: 20px;
    border-left: 4px solid var(--error-color);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

.results-section h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-color);
}

.original-text {
    background-color: var(--card-bg);
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 25px;
    border: 1px solid var(--border-color);
}

.original-text h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.variations {
    display: grid;
    gap: 20px;
}

.variation {
    position: relative;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 15px;
    transition: box-shadow 0.3s;
}

.variation:hover {
    box-shadow: var(--shadow);
}

.variation h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.variation p {
    margin-bottom: 15px;
    white-space: pre-wrap;
    color: var(--text-color);
}

.copy-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.3s;
}

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

footer {
    text-align: center;
    color: var(--text-color);
    font-size: 0.875rem;
    opacity: 0.7;
}

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

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

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    main {
        padding: 20px;
    }
    
    .copy-btn {
        position: static;
        display: block;
        margin-top: 10px;
        width: 100%;
    }
}