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

:root {
    --primary-color: #03045E;
    --secondary-color: #023E8A;
    --accent-color: #0077B6;
    --light-accent: #0096C7;
    --lightest-accent: #90E0EF;
    --white: #FFFFFF;
    --light-gray: #F8F9FA;
    --medium-gray: #E9ECEF;
    --dark-gray: #6C757D;
    --text-dark: #212529;
    --text-light: #6C757D;
    --success: #28A745;
    --warning: #FFC107;
    --danger: #DC3545;
    --shadow: 0 2px 10px rgba(3, 4, 94, 0.1);
    --shadow-hover: 0 4px 20px rgba(3, 4, 94, 0.15);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

.app-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 1rem;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.app-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.app-logo {
    width: 28px;
    height: 28px;
    object-fit: contain;
    border-radius: 6px;
}

.language-toggle {
    display: flex;
    align-items: center;
}

.lang-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.lang-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.lang-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.lang-btn i {
    font-size: 0.9rem;
    transition: transform 0.3s ease;
}

.lang-btn:hover i {
    transform: rotate(15deg);
}

.lang-btn #current-lang {
    font-weight: 600;
    min-width: 20px;
    text-align: center;
}

.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

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

.section.active {
    display: block;
}

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

.section-header {
    text-align: center;
    margin-bottom: 2rem;
}

.section-header h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

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

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

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

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

.stat-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.stat-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon i {
    font-size: 1.6rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

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

.daily-inspiration {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

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

.inspiration-card {
    text-align: center;
}

.inspiration-card p {
    font-style: italic;
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    line-height: 1.8;
}

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

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

.action-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.action-btn {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--light-accent) 100%);
    color: var(--white);
    border: none;
    padding: 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
}

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

.action-btn i {
    font-size: 1.5rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

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

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

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 119, 182, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.word-count {
    text-align: right;
    margin-top: 0.5rem;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Button Styles */
.btn-primary,
.btn-secondary {
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    background: var(--medium-gray);
    color: var(--text-dark);
}

.btn-secondary:hover {
    background: var(--dark-gray);
    color: var(--white);
}

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

/* Exercise Styles */
.exercise-controls {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.control-group {
    margin-bottom: 1rem;
}

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

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

.exercise-header h3 {
    color: var(--primary-color);
    margin: 0;
}

.difficulty-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.difficulty-badge.beginner {
    background: var(--success);
    color: var(--white);
}

.difficulty-badge.intermediate {
    background: var(--warning);
    color: var(--text-dark);
}

.difficulty-badge.advanced {
    background: var(--danger);
    color: var(--white);
}

.exercise-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.guidelines {
    background: var(--light-gray);
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.guidelines ul {
    margin-left: 1rem;
}

.guidelines li {
    margin-bottom: 0.5rem;
}

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

.timer {
    text-align: center;
    margin-top: 1rem;
    padding: 1rem;
    background: var(--light-gray);
    border-radius: var(--border-radius);
}

.timer span {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
}

.exercises-list {
    display: grid;
    gap: 1rem;
}

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

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

.exercise-item {
    background: var(--light-gray);
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.exercise-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.exercise-item .exercise-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-light);
}

/* Journal Styles */
.journal-form {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

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

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

.filter-controls {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.journal-list {
    display: grid;
    gap: 1rem;
}

.journal-entry {
    background: var(--light-gray);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.journal-entry:hover {
    background: var(--medium-gray);
}

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

.journal-entry h4 {
    color: var(--primary-color);
    margin: 0;
}

.journal-entry .mood-indicator {
    font-size: 1.2rem;
}

.journal-entry .entry-meta {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.journal-entry .entry-preview {
    color: var(--text-dark);
    line-height: 1.6;
}

.journal-entry-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.btn-small {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
    border-radius: 6px;
}

/* Character Styles */
.character-form {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

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

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

.characters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.character-card {
    background: var(--light-gray);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.character-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.character-card h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.character-card .character-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--text-light);
}

.character-card .character-description {
    color: var(--text-dark);
    line-height: 1.6;
    margin-bottom: 1rem;
}

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

/* Progress Styles */
.progress-overview {
    margin-bottom: 2rem;
}

.progress-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.progress-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
}

.progress-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.progress-icon {
    font-size: 2.5rem;
}

.progress-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
}

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

.achievements-section {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

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

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
}

.achievement-card {
    background: var(--light-gray);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
}

.achievement-card.unlocked {
    background: linear-gradient(135deg, var(--lightest-accent) 0%, var(--light-accent) 100%);
    color: var(--white);
}

.achievement-card:hover {
    transform: translateY(-2px);
}

.achievement-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.achievement-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

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

.achievement-card.unlocked .achievement-description {
    color: rgba(255, 255, 255, 0.9);
}

.writing-calendar {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow-x: auto;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, minmax(44px, 1fr));
    gap: 0.5rem;
    min-width: 340px;
}

.calendar-header {
    font-weight: 700;
    color: var(--text-light);
    text-transform: uppercase;
    font-size: 0.8rem;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    font-size: 0.9rem;
    transition: var(--transition);
}

.calendar-day.has-activity {
    background: var(--accent-color);
    color: var(--white);
}

.calendar-day.today {
    border: 2px solid var(--primary-color);
}

/* FAQ Styles */
.faq-container {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-item {
    border-bottom: 1px solid var(--medium-gray);
}

.faq-item:last-child {
    border-bottom: none;
}

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

.faq-question:hover {
    background: var(--light-gray);
}

.faq-question[aria-expanded="true"] {
    background: var(--light-gray);
}

.faq-icon {
    font-size: 1.2rem;
    transition: var(--transition);
}

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

.faq-answer {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-dark);
    line-height: 1.6;
    animation: slideDown 0.3s ease-in-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    border-top: 1px solid var(--medium-gray);
    display: flex;
    justify-content: space-around;
    padding: 0.5rem 0;
    z-index: 1000;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--text-light);
    transition: var(--transition);
    padding: 0.5rem;
    border-radius: 8px;
    min-width: 60px;
}

.nav-item:hover,
.nav-item.active {
    color: var(--primary-color);
    background: rgba(3, 4, 94, 0.1);
}

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

.nav-item span {
    font-size: 0.7rem;
    font-weight: 600;
    text-align: center;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .main-content {
        padding: 0.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        grid-template-columns: 1fr;
    }
    
    .characters-grid {
        grid-template-columns: 1fr;
    }
    
    .progress-cards {
        grid-template-columns: 1fr;
    }
    
    .achievements-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-controls {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .exercise-actions {
        flex-direction: column;
    }
    
    .app-title {
        font-size: 1.2rem;
    }
    
    .app-logo {
        width: 22px;
        height: 22px;
        border-radius: 4px;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
    
    .welcome-card {
        padding: 1.5rem;
    }
    
    .welcome-card h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .calendar-grid {
        grid-template-columns: repeat(7, minmax(34px, 1fr));
        gap: 0.3rem;
        min-width: 300px;
    }
    .calendar-day {
        font-size: 0.8rem;
    }
    .calendar-header {
        font-size: 0.7rem;
    }
    
    .nav-item span {
        font-size: 0.6rem;
    }
    
    .nav-item i {
        font-size: 1rem;
    }
}

/* 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;
}

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

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 1s ease-in-out infinite;
}

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

/* Toast Notifications */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--success);
    color: var(--white);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    z-index: 2000;
    animation: slideInRight 0.3s ease-in-out;
}

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

.toast.warning {
    background: var(--warning);
    color: var(--text-dark);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Language transition animation */
[data-lang] {
    transition: opacity 0.2s ease;
}

[data-lang].translating {
    opacity: 0.7;
}

/* Smooth transition for language changes */
.language-transition {
    animation: languageFade 0.3s ease-in-out;
}

@keyframes languageFade {
    0% { opacity: 0.8; transform: translateY(-2px); }
    50% { opacity: 0.9; transform: translateY(-1px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

/* Glass/blur effects for header and bottom nav (when supported) */
.app-header {
    backdrop-filter: saturate(180%) blur(8px);
    -webkit-backdrop-filter: saturate(180%) blur(8px);
}

.bottom-nav {
    backdrop-filter: saturate(180%) blur(10px);
    -webkit-backdrop-filter: saturate(180%) blur(10px);
    background: rgba(255, 255, 255, 0.85);
}

/* Buttons: focus-visible and active states */
.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.action-btn:focus-visible,
.btn-small:focus-visible {
    outline: none;
    box-shadow: 0 0 0 4px rgba(0, 119, 182, 0.2);
}

.btn-primary:active,
.btn-secondary:active,
.action-btn:active,
.btn-small:active {
    transform: translateY(0) scale(0.98);
}

/* Elevate more cards on hover for consistency */
.welcome-card:hover,
.daily-inspiration:hover,
.quick-actions:hover,
.journal-form:hover,
.journal-entries:hover,
.characters-gallery:hover,
.achievements-section:hover,
.writing-calendar:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
    transition: var(--transition);
}

/* Scrollbar customization (WebKit) */
*::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

*::-webkit-scrollbar-track {
    background: var(--light-gray);
    border-radius: 10px;
}

*::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--accent-color), var(--light-accent));
    border-radius: 10px;
    border: 2px solid var(--light-gray);
}

*::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--secondary-color), var(--accent-color));
}

/* Scrollbar for Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--accent-color) var(--light-gray);
}

/* Reduce motion preference */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}