/* Global styles */
:root {
    --primary-color: #4285F4;
    --primary-dark: #3367D6;
    --secondary-color: #34A853;
    --accent-color: #FBBC05;
    --danger-color: #EA4335;
    --text-dark: #202124;
    --text-light: #5f6368;
    --gray-light: #f5f5f5;
    --gray-medium: #e8eaed;
    --gray-border: #dadce0;
    --white: #ffffff;
    --rtl-dir: rtl;
    --ltr-dir: ltr;
    --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --transition-speed: 0.3s;
    --panel-background: #f8f9fa;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header styles */
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    flex-direction: column;
}

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
}

.primary-color {
    color: #4285f4;
}

.tagline {
    font-size: 0.9rem;
    color: #666;
    margin-top: -5px;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 1.5rem;
    position: relative;
}

nav ul li::after {
    content: '';
    display: block;
    width: 0;
    height: 3px;
    background-color: #4285f4;
    position: absolute;
    bottom: -10px;
    left: 0;
    transition: width 0.3s;
}

nav ul li.active::after,
nav ul li:hover::after {
    width: 100%;
}

nav a {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    padding: 0.5rem 0;
    transition: color 0.3s;
}

nav a:hover,
nav ul li.active a {
    color: #4285f4;
}

/* Main content styles */
main {
    flex: 1;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.translation-section {
    width: 100%;
}

.hidden {
    display: none;
}

.translation-container {
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.translation-box {
    padding: 1.5rem;
}

/* Language controls */
.language-controls {
    display: flex;
    align-items: center;
    border-bottom: 1px solid #eee;
    padding-bottom: 1.5rem;
    margin-bottom: 1.5rem;
}

.language-selector {
    flex: 1;
}

.lang-select {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    background-color: #f9f9f9;
    cursor: pointer;
    transition: border-color 0.3s, box-shadow 0.3s;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23777' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.7rem center;
    background-size: 1em;
    padding-right: 2.5rem;
}

.lang-select:focus {
    outline: none;
    border-color: #4285f4;
    box-shadow: 0 0 0 2px rgba(66, 133, 244, 0.25);
}

.lang-select option {
    font-size: 0.95rem;
    padding: 0.5rem;
}

.lang-select option[value="auto"] {
    font-weight: bold;
}

.swap-languages {
    margin: 0 1.5rem;
}

.swap-languages button {
    background-color: #f1f1f1;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.3s;
    display: flex;
    justify-content: center;
    align-items: center;
}

.swap-languages button:hover {
    background-color: #e0e0e0;
    transform: rotate(180deg);
}

.swap-languages i {
    font-size: 1.2rem;
    color: #555;
}

/* Translation panels */
.translation-panels {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.panel {
    flex: 1;
    border: 1px solid #eee;
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.panel-header {
    background-color: #f9f9f9;
    padding: 0.8rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #eee;
}

.panel-title {
    font-weight: 600;
    color: #555;
}

.panel-actions {
    display: flex;
}

.icon-button {
    background: none;
    border: none;
    font-size: 1rem;
    padding: 0.3rem;
    cursor: pointer;
    border-radius: 3px;
    transition: background-color 0.2s;
    color: #777;
}

.icon-button:hover {
    background-color: #e0e0e0;
    color: #4285f4;
}

textarea#text-input {
    resize: none;
    border: none;
    padding: 1rem;
    width: 100%;
    height: 200px;
    font-family: inherit;
    font-size: 1rem;
}

textarea#text-input:focus {
    outline: none;
}

#text-result,
.document-content {
    padding: 1rem;
    height: 200px;
    overflow-y: auto;
    background-color: #fcfcfc;
    flex: 1;
}

.panel-footer {
    padding: 0.8rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #f9f9f9;
    border-top: 1px solid #eee;
}

.char-count {
    font-size: 0.85rem;
    color: #777;
}

.translate-button {
    background-color: #4285f4;
    color: white;
    border: none;
    border-radius: 5px;
    padding: 0.6rem 1.2rem;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.translate-button:hover {
    background-color: #3367d6;
}

.translate-button:disabled {
    background-color: #b3b3b3;
    cursor: not-allowed;
}

/* Active translate button */
.translate-button.active-button {
    background-color: #4285f4;
    opacity: 1;
}

/* Translate button for documents - default transparent until file is selected */
#doc-translation-form .translate-button {
    opacity: 0.6;
    background-color: rgba(66, 133, 244, 0.8);
    transition: all 0.3s ease;
    cursor: not-allowed;
}

#doc-translation-form .translate-button.active-button {
    background-color: #4285f4;
    opacity: 1;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

/* Document upload area */
.file-upload-area {
    border: 2px dashed #ddd;
    border-radius: 10px;
    padding: 2.5rem;
    text-align: center;
    margin: 2rem 0;
    transition: border-color 0.3s, background-color 0.3s;
    position: relative;
}

.file-upload-area:hover {
    background-color: #f9f9f9;
    border-color: #4285f4;
}

.file-upload-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
}

.file-upload-label i {
    font-size: 2.5rem;
    color: #4285f4;
    margin-bottom: 1rem;
}

.file-types {
    font-size: 0.85rem;
    color: #777;
    margin-top: 0.5rem;
}

input.file-input {
    display: none;
}

/* File name display - improved styling */
#file-name-display {
    margin-top: 1rem;
    padding: 0.7rem 1rem;
    background-color: #e8f0fe;
    border-radius: 4px;
    color: #1a73e8;
    font-weight: 500;
    display: none;
    margin-bottom: 1rem;
    border-left: 3px solid #4285f4;
}

.document-result-area {
    margin-top: 2rem;
}

.document-panels {
    display: none;
}

.document-actions {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
}

.file-info {
    font-size: 0.85rem;
    color: #777;
}

/* Download button - enhanced styling */
.download-button {
    background-color: #34A853;
    color: white;
    border: none;
    border-radius: 5px;
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin: 1.5rem auto;
    width: fit-content;
    min-width: 200px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.15);
}

.download-button:hover {
    background-color: #2a8a46;
    box-shadow: 0 3px 8px rgba(0,0,0,0.2);
    transform: translateY(-1px);
}

.download-button i {
    font-size: 1.1rem;
}

/* Loading indicator */
.loading-indicator {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
    color: #555;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(66, 133, 244, 0.2);
    border-left-color: #4285f4;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Notification and error messages */
.notification,
.error-message {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.8rem 1.5rem;
    border-radius: 5px;
    font-weight: 500;
    z-index: 100;
    display: none;
    opacity: 0;
    transition: opacity 0.3s;
    max-width: 90%;
}

.notification {
    background-color: #4caf50;
    color: white;
}

.error-message {
    background-color: #f44336;
    color: white;
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    text-align: center;
    display: none;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

/* Show animation for notification */
.notification.show, 
.error-message.show {
    display: block;
    opacity: 1;
    animation: fadeIn 0.3s;
}

/* Footer */
footer {
    background-color: #333;
    color: #fff;
    padding: 1.5rem;
    text-align: center;
}

.footer-content p {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Debug info */
.debug-info {
    background-color: #ffe082;
    color: #333;
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 5px;
    font-family: monospace;
    display: none;
}

/* Quick phrases styles */
.quick-phrases-container {
    margin-top: 1.5rem;
    border-top: 1px solid #eee;
    padding-top: 1.5rem;
}

.quick-phrases {
    margin-bottom: 1.5rem;
    background-color: var(--panel-background);
    border-radius: var(--border-radius);
    padding: 1rem;
    border: 1px solid var(--gray-border);
}

.quick-phrases h3 {
    margin-bottom: 0.8rem;
    color: var(--text-dark);
    font-size: 0.95rem;
    font-weight: 600;
}

.phrases-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.phrase-btn {
    background-color: var(--white);
    border: 1px solid var(--gray-border);
    border-radius: 20px;
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-speed);
}

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

.phrase-btn.ar {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Auto-detect language badge */
.detected-language {
    display: inline-block;
    background-color: #e8f0fe;
    color: #1a73e8;
    padding: 0.2rem 0.5rem;
    border-radius: 3px;
    font-size: 0.8rem;
    margin-left: 0.5rem;
    font-weight: normal;
}

/* RTL support for text areas and panels */
[dir="rtl"] {
    text-align: right;
}

/* Responsive design */
@media (max-width: 768px) {
    .translation-panels {
        flex-direction: column;
    }
    
    header {
        flex-direction: column;
        padding: 1rem;
    }
    
    nav ul li {
        margin-left: 1rem;
        margin-top: 0.5rem;
    }
    
    .language-controls {
        flex-direction: column;
        gap: 1rem;
        flex-wrap: wrap;
    }
    
    .language-selector {
        flex-basis: 100%;
    }
    
    .swap-languages {
        margin: 0 auto;
    }
    
    .translation-box {
        padding: 1rem;
    }
    
    .file-upload-area {
        padding: 1.5rem;
    }
}

/* Animation for loading and transitions */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.translated-text {
    animation: fadeIn 0.4s ease-in-out;
}