/* ============================================
   Base Styles & Reset
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: all 0.3s ease;
}

body {
    font-family: 'Cairo', 'Inter', 'Arial', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

/* RTL Support */
body[dir="rtl"],
body.lang-ar {
    direction: rtl;
    text-align: right;
    font-family: 'Cairo', 'Arial', sans-serif;
}

/* LTR Support */
body[dir="ltr"],
body.lang-en {
    direction: ltr;
    text-align: left;
    font-family: 'Inter', 'Arial', sans-serif;
}

/* ============================================
   Layout & Container
   ============================================ */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.survey-card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    padding: 40px;
    margin: 20px 0;
    position: relative;
    overflow: hidden;
}

.survey-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #667eea, #764ba2);
}

/* ============================================
   Language Switcher
   ============================================ */
.language-switcher {
    position: absolute;
    top: 20px;
    left: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 10;
}

body[dir="rtl"] .language-switcher {
    left: auto;
    right: 20px;
}

.lang-btn {
    padding: 8px 16px;
    border-radius: 20px;
    text-decoration: none;
    color: #667eea;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid transparent;
}

.lang-btn:hover {
    background: #f0f2ff;
    border-color: #667eea;
    transform: translateY(-2px);
}

/* ============================================
   Auth Button (Login/Logout)
   ============================================ */
.auth-button-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 10px;
}

body[dir="rtl"] .auth-button-container {
    right: auto;
    left: 20px;
}

.auth-btn {
    padding: 10px 18px;
    border-radius: 25px;
    text-decoration: none;
    color: white;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: 2px solid transparent;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.auth-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

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

.auth-btn i {
    font-size: 16px;
}

.auth-btn span {
    white-space: nowrap;
}

/* Responsive: Hide text on small screens, show only icon */
@media (max-width: 480px) {
    .auth-btn span {
        display: none;
    }
    .auth-btn {
        padding: 10px 12px;
        border-radius: 50%;
        width: 44px;
        height: 44px;
        justify-content: center;
    }
}

/* ============================================
   Consent Popup
   ============================================ */
.consent-popup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 10000;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.consent-popup.show {
    display: flex;
    opacity: 1;
}

.consent-popup-content {
    background: white;
    border-radius: 20px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.9);
    transition: transform 0.3s ease-in-out;
}

.consent-popup.show .consent-popup-content {
    transform: scale(1);
}

.consent-popup-body {
    padding: 40px;
    overflow-y: auto;
    flex: 1;
}

.consent-popup-body p {
    margin-bottom: 20px;
    line-height: 1.6;
    color: #333;
    text-align: justify;
}

.consent-popup-body p:last-child {
    margin-bottom: 0;
}

.consent-popup-footer {
    padding: 20px 40px;
    border-top: 2px solid #e0e0e0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.consent-checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    user-select: none;
    flex: 1;
}

.consent-checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: #667eea;
}

.consent-checkbox-label span {
    color: #333;
    font-weight: 500;
}

.consent-confirm-btn {
    padding: 12px 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.consent-confirm-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

.consent-confirm-btn:active:not(:disabled) {
    transform: translateY(0);
}

.consent-confirm-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: #ccc;
}

/* Responsive consent popup */
@media (max-width: 600px) {
    .consent-popup-content {
        width: 95%;
        max-height: 90vh;
    }
    
    .consent-popup-body {
        padding: 30px 20px;
    }
    
    .consent-popup-footer {
        padding: 15px 20px;
        flex-direction: column;
        align-items: stretch;
    }
    
    .consent-confirm-btn {
        width: 100%;
    }
}

.lang-btn.active {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-color: transparent;
}

.lang-separator {
    color: #bdc3c7;
    font-weight: 300;
}

/* ============================================
   Header & Logo
   ============================================ */
.header {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    width: 200px;
    height: 200px;
    margin: 0 auto 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.title {
    font-size: 28px;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 10px;
}

.subtitle {
    color: #7f8c8d;
    font-size: 16px;
}

/* ============================================
   Progress Bar
   ============================================ */
.progress-container {
    margin-bottom: 30px;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: #ecf0f1;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 10px;
    transition: width 0.3s ease;
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background-image: linear-gradient(
        -45deg,
        rgba(255, 255, 255, 0.2) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.2) 50%,
        rgba(255, 255, 255, 0.2) 75%,
        transparent 75%,
        transparent
    );
    background-size: 50px 50px;
    animation: move 2s linear infinite;
}

@keyframes move {
    0% { background-position: 0 0; }
    100% { background-position: 50px 50px; }
}

.progress-text {
    text-align: center;
    color: #7f8c8d;
    font-size: 14px;
}

/* ============================================
   Questions
   ============================================ */
.question-container {
    margin-bottom: 30px;
}

.question-number {
    display: inline-block;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
}

.question-text {
    font-size: 22px;
    font-weight: 600;
    color: #2c3e50;
    line-height: 1.6;
    margin-bottom: 30px;
}

/* ============================================
   Options
   ============================================ */
.options-container {
    margin: 20px 0;
}

.option {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 20px;
    margin: 15px 0;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.option::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.1), transparent);
    transition: left 0.3s;
}

.option:hover::before {
    left: 100%;
}

.option:hover {
    border-color: #667eea;
    background: #f0f2ff;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.2);
}

.option input[type="radio"],
.option input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: #667eea;
    flex-shrink: 0;
}

/* RTL support for option inputs */
body[dir="rtl"] .option input[type="radio"],
body[dir="rtl"] .option input[type="checkbox"] {
    margin-left: 15px;
    margin-right: 0;
}

body[dir="ltr"] .option input[type="radio"],
body[dir="ltr"] .option input[type="checkbox"] {
    margin-right: 15px;
    margin-left: 0;
}

.option label {
    flex: 1;
    cursor: pointer;
    font-size: 16px;
    color: #2c3e50;
}

/* ============================================
   Text Input
   ============================================ */
.text-input {
    width: 100%;
    min-height: 120px;
    padding: 20px;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    font-size: 16px;
    resize: vertical;
    transition: border-color 0.3s ease;
}

body[dir="rtl"] .text-input {
    font-family: 'Cairo', sans-serif;
    direction: rtl;
    text-align: right;
}

body[dir="ltr"] .text-input {
    font-family: 'Inter', sans-serif;
    direction: ltr;
    text-align: left;
}

.text-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* ============================================
   Audio Controls
   ============================================ */
.audio-controls {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    margin: 20px 0;
}

.audio-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    margin: 0 10px;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
}

.audio-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.audio-btn:hover::before {
    left: 100%;
}

.audio-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.audio-btn:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
    transform: none;
}

.audio-btn.recording {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.audio-playback {
    margin-top: 20px;
    width: 100%;
    border-radius: 8px;
}

.audio-file-input {
    display: none;
}

.audio-playback-hidden {
    display: none;
}

/* ============================================
   Buttons
   ============================================ */
.submit-btn {
    background: linear-gradient(135deg, #27ae60, #2ecc71);
    color: white;
    border: none;
    padding: 18px 40px;
    border-radius: 25px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.submit-btn:hover::before {
    left: 100%;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(39, 174, 96, 0.3);
}

.submit-btn:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
    transform: none;
}

.button-group {
    display: flex;
    gap: 15px;
    width: 100%;
}

.skip-btn {
    background: linear-gradient(135deg, #95a5a6, #7f8c8d);
    color: white;
    border: none;
    padding: 18px 40px;
    border-radius: 25px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    flex: 1;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
}

.skip-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.skip-btn:hover::before {
    left: 100%;
}

.skip-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(127, 140, 141, 0.3);
}

.skip-btn:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
    transform: none;
}

.button-group .submit-btn {
    flex: 1;
}

/* ============================================
   Messages & Alerts
   ============================================ */
.error {
    background: #fee;
    color: #e74c3c;
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
}

body[dir="rtl"] .error {
    border-right: 4px solid #e74c3c;
    border-left: none;
}

body[dir="ltr"] .error {
    border-left: 4px solid #e74c3c;
    border-right: none;
}

.success {
    background: #efe;
    color: #27ae60;
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
}

body[dir="rtl"] .success {
    border-right: 4px solid #27ae60;
    border-left: none;
}

body[dir="ltr"] .success {
    border-left: 4px solid #27ae60;
    border-right: none;
}

.success-animation {
    animation: successPulse 0.6s ease-in-out;
}

@keyframes successPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

/* ============================================
   Loading & Spinner
   ============================================ */
.loading {
    display: none;
    text-align: center;
    margin: 20px 0;
}

.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 0 auto 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-dots {
    display: inline-block;
}

.loading-dots::after {
    content: '';
    animation: dots 1.5s infinite;
}

@keyframes dots {
    0%, 20% { content: ''; }
    40% { content: '.'; }
    60% { content: '..'; }
    80%, 100% { content: '...'; }
}

/* ============================================
   Focus States
   ============================================ */
input:focus,
textarea:focus,
button:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

/* ============================================
   Custom Scrollbar
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a6fd8, #6a4190);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .survey-card {
        padding: 25px;
        margin: 10px 0;
    }
    
    .title {
        font-size: 24px;
    }
    
    .question-text {
        font-size: 20px;
    }
    
    .audio-btn {
        padding: 12px 20px;
        font-size: 14px;
        margin: 5px;
    }
    
    .language-switcher {
        top: 10px;
        left: 10px;
    }
    
    body[dir="rtl"] .language-switcher {
        left: auto;
        right: 10px;
    }
    
    .lang-btn {
        padding: 6px 12px;
        font-size: 12px;
    }
}

/* ============================================
   Dark Mode Support
   ============================================ */
@media (prefers-color-scheme: dark) {
    .survey-card {
        background: #2c3e50;
        color: #ecf0f1;
    }
    
    .question-text {
        color: #ecf0f1;
    }
    
    .option {
        background: #34495e;
        border-color: #4a5f7a;
        color: #ecf0f1;
    }
    
    .option:hover {
        background: #3d566e;
        border-color: #667eea;
    }
    
    .text-input {
        background: #34495e;
        border-color: #4a5f7a;
        color: #ecf0f1;
    }
    
    .audio-controls {
        background: #34495e;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    body {
        background: white;
    }
    
    .survey-card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .audio-controls,
    .submit-btn {
        display: none;
    }
}