/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 15px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    width: 100%;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 2rem;
    color: white;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.header p {
    font-size: 1.1rem;
    opacity: 0.9;
    font-weight: 300;
}

/* Main Content */
.main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.screen {
    display: none;
    width: 100%;
    max-width: 700px;
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    animation: fadeIn 0.5s ease-out;
    margin: 0 auto;
}

.screen.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Welcome Screen */
.welcome-content {
    text-align: center;
}

.mood-icons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.mood-icon {
    font-size: 3rem;
    animation: bounce 2s infinite;
}

.mood-icon:nth-child(2) { animation-delay: 0.2s; }
.mood-icon:nth-child(3) { animation-delay: 0.4s; }
.mood-icon:nth-child(4) { animation-delay: 0.6s; }

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

.welcome-content h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #333;
}

.welcome-content p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 2rem;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 8px;
    background: #e0e0e0;
    border-radius: 4px;
    margin-bottom: 2rem;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

/* Question Content */
.question-content h2 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: #333;
    text-align: center;
}

.answer-options {
    display: grid;
    gap: 1rem;
    margin-bottom: 2rem;
}

.answer-option {
    padding: 1rem 1.5rem;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    text-align: center;
}

.answer-option:hover {
    border-color: #667eea;
    background: #f8f9ff;
    transform: translateY(-2px);
}

.answer-option.selected {
    border-color: #667eea;
    background: #667eea;
    color: white;
}

/* Navigation */
.navigation {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

/* Buttons */
.btn {
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

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

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #f5f5f5;
    color: #333;
}

.btn-secondary:hover:not(:disabled) {
    background: #e0e0e0;
}

.btn-outline {
    background: transparent;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-outline:hover {
    background: #667eea;
    color: white;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Result Screen */
.result-content {
    text-align: center;
}

.mood-display {
    margin-bottom: 2rem;
}

.result-mood-icon {
    font-size: 5rem;
    margin-bottom: 1rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.mood-display h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.mood-display p {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.6;
}

.mood-quote {
    background: #f0f8ff;
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    text-align: center;
    border-left: 4px solid #667eea;
}

.mood-quote h3 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.mood-quote blockquote {
    font-style: italic;
    font-size: 1.1rem;
    color: #555;
    line-height: 1.6;
    margin: 0;
    position: relative;
}

.mood-quote blockquote:before {
    content: '"';
    font-size: 3rem;
    color: #667eea;
    position: absolute;
    left: -1rem;
    top: -0.5rem;
    opacity: 0.3;
}

.mood-tips {
    background: #f8f9ff;
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    text-align: left;
}

.mood-history {
    background: #f9f9f9;
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    text-align: left;
}

.mood-history h3 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    background: white;
    border-radius: 8px;
    border-left: 3px solid #667eea;
}

.history-item:last-child {
    margin-bottom: 0;
}

.history-mood {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.history-emoji {
    font-size: 1.5rem;
}

.history-details {
    display: flex;
    flex-direction: column;
}

.history-mood-name {
    font-weight: 500;
    color: #333;
    text-transform: capitalize;
}

.history-method {
    font-size: 0.85rem;
    color: #666;
}

.history-time {
    font-size: 0.85rem;
    color: #888;
    font-style: italic;
}

.history-empty {
    text-align: center;
    color: #666;
    font-style: italic;
    padding: 1rem;
}

.mood-tips h3 {
    color: #333;
    margin-bottom: 1rem;
}

.mood-tips ul {
    list-style: none;
    padding: 0;
}

.mood-tips li {
    padding: 0.5rem 0;
    color: #555;
}

.mood-tips li:before {
    content: "✨ ";
    margin-right: 0.5rem;
}

.result-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Text Analysis */
.text-content {
    text-align: center;
}

.text-content h2 {
    margin-bottom: 1rem;
    color: #333;
}

.text-content p {
    color: #666;
    margin-bottom: 1.5rem;
}

#mood-text {
    width: 100%;
    min-height: 120px;
    padding: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-family: inherit;
    font-size: 1rem;
    resize: vertical;
    margin-bottom: 1.5rem;
}

#mood-text:focus {
    outline: none;
    border-color: #667eea;
}

.text-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* About Section */
.about-section {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 999;
}

.about-toggle {
    background: rgba(255, 255, 255, 0.9);
    color: #667eea;
    border: 2px solid #667eea;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.about-toggle:hover {
    background: #667eea;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.about-panel {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1001;
}

.about-panel.active {
    display: flex;
}

.about-content {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    max-width: 400px;
    width: 90%;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.about-content h3 {
    color: #333;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.about-content p {
    color: #666;
    margin-bottom: 1rem;
    font-size: 1rem;
}

.developers-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
    text-align: left;
}

.developers-list li {
    padding: 0.5rem 0;
    color: #555;
    font-size: 1rem;
    border-bottom: 1px solid #f0f0f0;
}

.developers-list li:last-child {
    border-bottom: none;
}

.developers-list li:before {
    content: "👨‍💻 ";
    margin-right: 0.5rem;
}

/* Admin Panel */
.admin-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
}

.admin-panel {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.admin-panel.active {
    display: flex;
}

.admin-content {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.admin-content h3 {
    margin-bottom: 1.5rem;
    color: #333;
}

.analytics-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    background: #f8f9ff;
    border-radius: 8px;
}

.analytics-mood {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.analytics-count {
    font-weight: 600;
    color: #667eea;
}

/* Responsive Design */

/* Large Desktop (1200px and up) */
@media (min-width: 1200px) {
    .container {
        max-width: 1000px;
        padding: 20px;
    }
    
    .screen {
        max-width: 800px;
        padding: 3rem;
    }
    
    .header h1 {
        font-size: 3rem;
    }
    
    .header p {
        font-size: 1.2rem;
    }
}

/* Desktop (992px to 1199px) */
@media (min-width: 992px) and (max-width: 1199px) {
    .container {
        max-width: 900px;
        padding: 20px;
    }
    
    .screen {
        max-width: 750px;
        padding: 2.5rem;
    }
}

/* Tablet (768px to 991px) */
@media (min-width: 768px) and (max-width: 991px) {
    .container {
        padding: 15px;
    }
    
    .screen {
        max-width: 650px;
        padding: 2rem;
    }
    
    .header h1 {
        font-size: 2.2rem;
    }
    
    .mood-icons {
        gap: 0.8rem;
    }
    
    .mood-icon {
        font-size: 2.8rem;
    }
    
    .result-mood-icon {
        font-size: 4.5rem;
    }
    
    .history-item {
        flex-direction: row;
        align-items: center;
    }
    
    .history-time {
        text-align: right;
        min-width: 80px;
    }
}

/* Mobile Large (576px to 767px) */
@media (min-width: 576px) and (max-width: 767px) {
    .container {
        padding: 12px;
    }
    
    .header {
        margin-bottom: 1.5rem;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .header p {
        font-size: 1rem;
    }
    
    .screen {
        padding: 1.5rem;
        border-radius: 16px;
    }
    
    .mood-icons {
        gap: 0.6rem;
        margin-bottom: 1.5rem;
    }
    
    .mood-icon {
        font-size: 2.5rem;
    }
    
    .result-mood-icon {
        font-size: 4rem;
    }
    
    .welcome-content h2 {
        font-size: 1.8rem;
    }
    
    .welcome-content p {
        font-size: 1rem;
    }
    
    .question-content h2 {
        font-size: 1.3rem;
        margin-bottom: 1.5rem;
    }
    
    .answer-option {
        padding: 0.9rem 1.2rem;
        font-size: 0.95rem;
    }
    
    .navigation {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .btn {
        width: 100%;
        padding: 0.8rem 1.5rem;
    }
    
    .result-actions {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .text-actions {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .mood-display h2 {
        font-size: 2rem;
    }
    
    .mood-quote, .mood-tips, .mood-history {
        padding: 1.2rem;
        margin-bottom: 1.5rem;
    }
    
    .mood-quote blockquote {
        font-size: 1rem;
    }
    
    .history-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .history-time {
        align-self: flex-end;
        font-size: 0.8rem;
    }
    
    .about-toggle, .admin-toggle {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }
}

/* Mobile Small (up to 575px) */
@media (max-width: 575px) {
    .container {
        padding: 10px;
    }
    
    .header {
        margin-bottom: 1rem;
    }
    
    .header h1 {
        font-size: 1.8rem;
        line-height: 1.2;
    }
    
    .header p {
        font-size: 0.95rem;
    }
    
    .screen {
        padding: 1rem;
        border-radius: 12px;
        max-width: 100%;
    }
    
    .mood-icons {
        gap: 0.4rem;
        margin-bottom: 1.2rem;
        flex-wrap: wrap;
    }
    
    .mood-icon {
        font-size: 2.2rem;
    }
    
    .result-mood-icon {
        font-size: 3.5rem;
    }
    
    .welcome-content h2 {
        font-size: 1.6rem;
        line-height: 1.3;
    }
    
    .welcome-content p {
        font-size: 0.95rem;
        margin-bottom: 1.5rem;
    }
    
    .question-content h2 {
        font-size: 1.2rem;
        margin-bottom: 1.2rem;
        line-height: 1.4;
    }
    
    .answer-option {
        padding: 0.8rem 1rem;
        font-size: 0.9rem;
        text-align: left;
    }
    
    .navigation {
        flex-direction: column;
        gap: 0.6rem;
    }
    
    .btn {
        width: 100%;
        padding: 0.75rem 1rem;
        font-size: 0.95rem;
    }
    
    .btn-small {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
    
    .result-actions {
        flex-direction: column;
        gap: 0.6rem;
    }
    
    .text-actions {
        flex-direction: column;
        gap: 0.6rem;
    }
    
    .mood-display h2 {
        font-size: 1.8rem;
        line-height: 1.2;
    }
    
    .mood-display p {
        font-size: 1rem;
    }
    
    .mood-quote, .mood-tips, .mood-history {
        padding: 1rem;
        margin-bottom: 1.2rem;
    }
    
    .mood-quote h3, .mood-tips h3, .mood-history h3 {
        font-size: 1.1rem;
        margin-bottom: 0.8rem;
    }
    
    .mood-quote blockquote {
        font-size: 0.95rem;
        line-height: 1.5;
    }
    
    .mood-quote blockquote:before {
        font-size: 2.5rem;
        left: -0.8rem;
        top: -0.3rem;
    }
    
    .mood-tips li {
        padding: 0.4rem 0;
        font-size: 0.9rem;
    }
    
    .history-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.4rem;
        padding: 0.6rem;
    }
    
    .history-emoji {
        font-size: 1.3rem;
    }
    
    .history-mood-name {
        font-size: 0.9rem;
    }
    
    .history-method {
        font-size: 0.8rem;
    }
    
    .history-time {
        align-self: flex-end;
        font-size: 0.75rem;
    }
    
    .about-section {
        top: 15px;
        right: 15px;
    }
    
    .admin-toggle {
        bottom: 15px;
        right: 15px;
    }
    
    .about-toggle, .admin-toggle {
        padding: 0.35rem 0.7rem;
        font-size: 0.8rem;
    }
    
    .about-content, .admin-content {
        padding: 1.5rem;
        width: 95%;
        max-width: 350px;
    }
    
    .about-content h3 {
        font-size: 1.3rem;
    }
    
    .developers-list li {
        font-size: 0.9rem;
        padding: 0.4rem 0;
    }
    
    #mood-text {
        min-height: 100px;
        padding: 0.8rem;
        font-size: 0.95rem;
    }
    
    .text-content h2 {
        font-size: 1.4rem;
    }
    
    .text-content p {
        font-size: 0.9rem;
    }
}

/* Extra Small Mobile (up to 360px) */
@media (max-width: 360px) {
    .container {
        padding: 8px;
    }
    
    .header h1 {
        font-size: 1.6rem;
    }
    
    .screen {
        padding: 0.8rem;
    }
    
    .mood-icon {
        font-size: 2rem;
    }
    
    .result-mood-icon {
        font-size: 3rem;
    }
    
    .welcome-content h2 {
        font-size: 1.4rem;
    }
    
    .question-content h2 {
        font-size: 1.1rem;
    }
    
    .mood-display h2 {
        font-size: 1.6rem;
    }
    
    .about-content, .admin-content {
        padding: 1.2rem;
    }
}