:root {
    --primary-color: #7868E6;
    --primary-light: #B8B5FF;
    --secondary-color: #EDEEF7;
    --accent-color: #E4FBFF;
    --error-color: #FFB4B4;
    --text-dark: #2c3e50;
    --text-light: #6c757d;
    --white: #ffffff;
    --shadow: 0 2px 10px rgba(120, 104, 230, 0.1);
    --shadow-hover: 0 4px 20px rgba(120, 104, 230, 0.2);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
    color: var(--text-dark);
    line-height: 1.6;
    padding-bottom: 80px;
    min-height: 100vh;
}

/* Header */
.app-header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 1rem 0;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.language-toggle {
    background: var(--primary-light);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--primary-color);
}

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

/* Main Content */
.app-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.app-section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.app-section.active {
    display: block;
}

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

/* Welcome Card */
.welcome-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    text-align: center;
    margin-bottom: 2rem;
}

.welcome-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.welcome-card h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.welcome-card p {
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

/* Progress Overview */
.progress-overview {
    margin: 2rem 0;
    padding: 1.5rem;
    background: var(--secondary-color);
    border-radius: var(--border-radius);
}

.progress-overview h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    text-align: center;
}

.progress-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.stat-item {
    text-align: center;
    padding: 1rem;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* Quick Actions */
.quick-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.action-btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    font-size: 1rem;
}

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

.action-btn.primary:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

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

.action-btn.secondary:hover {
    background: var(--primary-light);
    color: var(--white);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 2rem;
}

.section-header h2 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.section-header p {
    color: var(--text-light);
    font-size: 1.1rem;
}

/* Assessment */
.assessment-container {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.assessment-progress {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.progress-bar {
    flex: 1;
    height: 8px;
    background: var(--secondary-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    font-weight: 600;
    color: var(--primary-color);
    min-width: 60px;
}

.question-card {
    margin-bottom: 2rem;
}

.question-content h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

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

.answer-option {
    padding: 1rem;
    border: 2px solid var(--secondary-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    background: var(--white);
}

.answer-option:hover {
    border-color: var(--primary-light);
    background: var(--accent-color);
}

.answer-option.selected {
    border-color: var(--primary-color);
    background: var(--primary-light);
    color: var(--white);
}

.question-actions {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
}

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

.btn.primary:hover:not(:disabled) {
    background: var(--primary-light);
    transform: translateY(-2px);
}

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

.btn.secondary:hover:not(:disabled) {
    background: var(--primary-light);
    color: var(--white);
}

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

/* Assessment Results */
.assessment-results {
    text-align: center;
    padding: 2rem;
    background: var(--accent-color);
    border-radius: var(--border-radius);
    margin-top: 2rem;
}

.results-chart {
    margin: 2rem 0;
    display: grid;
    gap: 1rem;
}

.result-category {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.category-name {
    font-weight: 600;
    color: var(--text-dark);
}

.category-score {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.2rem;
}

.results-summary {
    margin: 2rem 0;
    padding: 1.5rem;
    background: var(--white);
    border-radius: var(--border-radius);
    text-align: left;
}

/* Strategy Section */
.strategy-container {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.strategy-tabs {
    display: flex;
    background: var(--secondary-color);
    overflow-x: auto;
}

.tab-btn {
    flex: 1;
    padding: 1rem;
    border: none;
    background: transparent;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    white-space: nowrap;
    min-width: 150px;
}

.tab-btn.active {
    background: var(--primary-color);
    color: var(--white);
}

.tab-btn:hover:not(.active) {
    background: var(--primary-light);
    color: var(--white);
}

.tab-content {
    padding: 2rem;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

/* Forms */
.content-form, .profile-form {
    background: var(--secondary-color);
    padding: 2rem;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--secondary-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(120, 104, 230, 0.1);
}

/* Content List */
.content-list {
    margin-top: 2rem;
}

.content-list h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.content-item {
    background: var(--white);
    border: 2px solid var(--secondary-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.content-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow);
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.content-title {
    font-weight: 700;
    color: var(--text-dark);
    font-size: 1.1rem;
}

.content-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-light);
}

.content-description {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.content-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.btn-edit {
    background: var(--primary-light);
    color: var(--white);
}

.btn-delete {
    background: var(--error-color);
    color: var(--white);
}

/* Ideas Generator */
.ideas-generator {
    text-align: center;
}

.idea-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
}

.idea-btn {
    padding: 1.5rem;
    border: 2px solid var(--secondary-color);
    border-radius: var(--border-radius);
    background: var(--white);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.idea-btn:hover {
    border-color: var(--primary-color);
    background: var(--primary-light);
    color: var(--white);
    transform: translateY(-2px);
}

.idea-btn i {
    font-size: 2rem;
}

.generated-ideas {
    margin-top: 2rem;
    display: grid;
    gap: 1rem;
}

.idea-card {
    background: var(--accent-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: left;
    border-left: 4px solid var(--primary-color);
}

.idea-title {
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.idea-description {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.idea-actions {
    display: flex;
    gap: 0.5rem;
}

/* Calendar */
.schedule-calendar {
    margin-top: 2rem;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.calendar-header h4 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background: var(--secondary-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.calendar-day {
    background: var(--white);
    padding: 1rem;
    min-height: 80px;
    position: relative;
    transition: var(--transition);
}

.calendar-day:hover {
    background: var(--accent-color);
}

.calendar-day.other-month {
    background: var(--secondary-color);
    color: var(--text-light);
}

.calendar-day.has-content {
    background: var(--primary-light);
    color: var(--white);
}

.day-number {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.day-content {
    font-size: 0.8rem;
    opacity: 0.8;
}

/* Profile Section */
.profile-container {
    display: grid;
    gap: 2rem;
}

.profile-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.profile-avatar {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto 2rem;
}

.avatar-placeholder {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--white);
    overflow: hidden;
}

.avatar-edit {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-color);
    color: var(--white);
    border: 3px solid var(--white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.avatar-edit:hover {
    background: var(--primary-light);
    transform: scale(1.1);
}

.social-links {
    margin-top: 2rem;
}

.social-links h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.social-inputs {
    display: grid;
    gap: 1rem;
}

.social-inputs label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
}

.social-inputs i {
    width: 20px;
    text-align: center;
}

/* Profile Stats */
.profile-stats {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}

.profile-stats h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    text-align: center;
}

.stats-grid {
    display: grid;
    gap: 1rem;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--secondary-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.stat-card:hover {
    background: var(--primary-light);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.stat-icon {
    font-size: 2rem;
    color: var(--primary-color);
}

.stat-card:hover .stat-icon {
    color: var(--white);
}

.stat-info {
    flex: 1;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-card:hover .stat-value {
    color: var(--white);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
}

.stat-card:hover .stat-label {
    color: var(--white);
}

/* FAQ Section */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    border: none;
    background: transparent;
    text-align: left;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--secondary-color);
}

.faq-question[aria-expanded="true"] {
    background: var(--primary-color);
    color: var(--white);
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: bold;
    transition: var(--transition);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-answer:not([hidden]) {
    padding: 1.5rem;
    max-height: 200px;
}

.faq-answer p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    z-index: 100;
}

.nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.75rem 0.5rem;
    text-decoration: none;
    color: var(--text-light);
    transition: var(--transition);
    font-size: 0.8rem;
}

.nav-item i {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.nav-item.active {
    color: var(--primary-color);
    background: var(--accent-color);
}

.nav-item:hover:not(.active) {
    color: var(--primary-color);
    background: var(--secondary-color);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-light);
    font-size: 0.9rem;
    background: var(--white);
    margin-top: 2rem;
    border-top: 1px solid var(--secondary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-main {
        padding: 1rem;
    }
    
    .welcome-card {
        padding: 1.5rem;
    }
    
    .welcome-card h2 {
        font-size: 1.5rem;
    }
    
    .quick-actions {
        flex-direction: column;
    }
    
    .action-btn {
        width: 100%;
        justify-content: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .question-actions {
        flex-direction: column;
    }
    
    .strategy-tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        min-width: auto;
    }
    
    .content-header {
        flex-direction: column;
        gap: 1rem;
    }
    
    .content-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .idea-categories {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .calendar-grid {
        font-size: 0.8rem;
    }
    
    .calendar-day {
        min-height: 60px;
        padding: 0.5rem;
    }
    
    .stats-grid {
        gap: 0.5rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .profile-container {
        grid-template-columns: 1fr;
    }
    
    .nav-item {
        font-size: 0.7rem;
        padding: 0.5rem 0.25rem;
    }
    
    .nav-item i {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0 0.5rem;
    }
    
    .app-title {
        font-size: 1.2rem;
    }
    
    .language-toggle {
        padding: 0.5rem;
    }
    
    .welcome-card {
        padding: 1rem;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .assessment-container,
    .strategy-container,
    .profile-card,
    .profile-stats {
        padding: 1rem;
    }
    
    .content-form,
    .profile-form {
        padding: 1rem;
    }
    
    .idea-categories {
        grid-template-columns: 1fr;
    }
    
    .calendar-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .faq-question {
        padding: 1rem;
        font-size: 1rem;
    }
    
    .faq-answer:not([hidden]) {
        padding: 1rem;
    }
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--secondary-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.hidden { display: none !important; }
.visible { display: block !important; }

/* Error States */
.error {
    color: var(--error-color);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
    border-color: var(--error-color);
}

/* Success States */
.success {
    color: #28a745;
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.toast {
    position: fixed;
    top: 100px;
    right: 1rem;
    background: var(--primary-color);
    color: var(--white);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
    z-index: 1000;
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.toast.show {
    transform: translateX(0);
}

.toast.success {
    background: #28a745;
}

.toast.error {
    background: var(--error-color);
}