:root {
    --primary-color: #5B6DCD; /* Azul lavanda claro */
    --secondary-color: #A7B8F5; /* Azul lavanda ainda mais claro */
    --accent-color: #B8C6F7; /* Azul pastel */
    --highlight-color: #E0E7FF; /* Lilás muito claro */
    --bright-color: #7EC4CF; /* Azul piscina claro */
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --medium-gray: #e9ecef;
    --dark-gray: #6c757d;
    --success-color: #7ED6A5; /* Verde claro */
    --warning-color: #FFE066; /* Amarelo claro */
    --danger-color: #FF6B6B; /* Vermelho claro */
    --border-radius: 12px;
    --shadow: 0 4px 12px rgba(91, 109, 205, 0.08);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--highlight-color) 0%, var(--white) 100%);
    color: var(--primary-color);
    line-height: 1.6;
    padding-bottom: 80px;
    min-height: 100vh;
}

header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 1.5rem 1rem;
    text-align: center;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content h1 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

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

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

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

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

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

/* Welcome Card */
.welcome-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
    text-align: center;
    border: 2px solid var(--accent-color);
}

.welcome-card h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.quick-stats {
    display: flex;
    justify-content: space-around;
    margin-top: 1.5rem;
    gap: 1rem;
    background: var(--highlight-color);
    border-radius: var(--border-radius);
    padding: 1rem 0;
}

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

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

.stat-label {
    font-size: 0.8rem;
    color: var(--dark-gray);
    margin-top: 0.25rem;
}

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

.action-btn {
    flex: 1;
    min-width: 150px;
    padding: 1rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 2px 8px rgba(126, 196, 207, 0.08);
}

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

.action-btn.primary:hover {
    background: var(--secondary-color);
    color: var(--primary-color);
    box-shadow: 0 4px 16px rgba(91, 109, 205, 0.12);
}

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

.action-btn.secondary:hover {
    background: var(--accent-color);
    color: var(--primary-color);
    box-shadow: 0 4px 16px rgba(91, 109, 205, 0.12);
}

/* Recent Sessions */
.recent-sessions {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--medium-gray);
}

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

.sessions-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.session-item {
    background: var(--highlight-color);
    border-radius: 8px;
    padding: 1rem;
    border-left: 4px solid var(--bright-color);
    transition: var(--transition);
    box-shadow: 0 1px 4px rgba(91, 109, 205, 0.06);
}

.session-item:hover {
    transform: translateX(5px);
    box-shadow: 0 2px 8px rgba(0, 128, 255, 0.2);
}

.session-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.session-title {
    font-weight: 600;
    color: var(--primary-color);
}

.session-time {
    font-size: 0.8rem;
    color: var(--dark-gray);
}

.session-details {
    font-size: 0.9rem;
    color: var(--dark-gray);
}

.empty-state {
    text-align: center;
    color: var(--dark-gray);
    font-style: italic;
    padding: 2rem;
}

/* Practice Section */
.practice-container {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--medium-gray);
}

.practice-container h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.practice-timer {
    text-align: center;
    margin-bottom: 2rem;
    padding: 2rem;
    background: linear-gradient(135deg, var(--highlight-color) 0%, var(--medium-gray) 100%);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(91, 109, 205, 0.06);
}

.timer-display {
    font-size: 3rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-family: 'Courier New', monospace;
}

.timer-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.timer-btn {
    width: 60px;
    height: 60px;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.timer-btn.start {
    background: var(--success-color);
    color: var(--white);
}

.timer-btn.pause {
    background: var(--warning-color);
    color: var(--white);
}

.timer-btn.stop {
    background: var(--danger-color);
    color: var(--white);
}

.timer-btn:hover:not(:disabled) {
    transform: scale(1.1);
}

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

/* Forms */
.practice-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem;
    border: 2px solid var(--medium-gray);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--highlight-color);
    color: var(--primary-color);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 128, 255, 0.1);
}

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

/* Rating */
.rating-container {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.rating-container input[type="radio"] {
    display: none;
}

.rating-container label {
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 0;
}

.rating-container label:hover,
.rating-container input[type="radio"]:checked + label {
    color: var(--warning-color);
    transform: scale(1.1);
}

/* Recording Section */
.recording-section {
    background: var(--highlight-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border: 1px solid var(--medium-gray);
}

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

.recording-controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.record-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.record-btn:first-child {
    background: var(--danger-color);
    color: var(--white);
}

.record-btn:last-child {
    background: var(--dark-gray);
    color: var(--white);
}

.record-btn:hover:not(:disabled) {
    transform: translateY(-2px);
}

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

.recording-status {
    margin: 1rem 0;
    padding: 0.5rem;
    border-radius: 4px;
    text-align: center;
    font-weight: 600;
}

.recording-status.recording {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}

.recording-status.stopped {
    background: rgba(40, 167, 69, 0.1);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.audio-playback {
    margin-top: 1rem;
}

.audio-playback audio {
    width: 100%;
    border-radius: 4px;
}

/* Submit Button */
.submit-btn {
    padding: 1rem 2rem;
    background: var(--bright-color);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.submit-btn:hover {
    background: var(--secondary-color);
    color: var(--primary-color);
    box-shadow: 0 4px 16px rgba(91, 109, 205, 0.12);
}

/* Progress Section */
.progress-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

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

.progress-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
    box-shadow: var(--shadow);
    border-top: 4px solid var(--accent-color);
}

.progress-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.progress-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--bright-color);
}

.progress-charts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.chart-container {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--medium-gray);
}

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

.chart-container canvas {
    width: 100% !important;
    height: auto !important;
    max-height: 300px;
}

.sessions-history {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--medium-gray);
}

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

.filter-controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.filter-controls select {
    flex: 1;
    min-width: 150px;
    padding: 0.5rem;
    border: 2px solid var(--medium-gray);
    border-radius: 8px;
    font-size: 0.9rem;
}

/* Goals Section */
.goals-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.goals-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    background: var(--highlight-color);
    border-radius: var(--border-radius);
    padding: 1rem 0;
}

.goal-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--accent-color);
    transition: var(--transition);
}

.goal-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 31, 63, 0.15);
}

.goal-card.completed {
    border-left-color: var(--success-color);
    opacity: 0.8;
    background: var(--medium-gray);
}

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

.goal-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.goal-category {
    background: var(--bright-color);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.goal-description {
    color: var(--dark-gray);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.goal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--medium-gray);
}

.goal-deadline {
    font-size: 0.9rem;
    color: var(--dark-gray);
}

.goal-priority {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.goal-priority.alta {
    background: var(--danger-color);
    color: var(--white);
}

.goal-priority.media {
    background: var(--warning-color);
    color: var(--primary-color);
}

.goal-priority.baixa {
    background: var(--success-color);
    color: var(--white);
}

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

.goal-btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.goal-btn.complete {
    background: var(--success-color);
    color: var(--white);
}

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

.goal-btn:hover {
    transform: translateY(-1px);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s;
}

.modal-content {
    background-color: var(--white);
    margin: 5% auto;
    padding: 2rem;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideIn 0.3s;
    box-shadow: var(--shadow);
    border: 1px solid var(--medium-gray);
}

@keyframes slideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    color: var(--dark-gray);
    transition: var(--transition);
}

.close:hover {
    color: var(--danger-color);
}

/* FAQ Section */
.faq-container {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--medium-gray);
}

.faq-container h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    border: 1px solid var(--medium-gray);
    border-radius: 8px;
    overflow: hidden;
    background: var(--highlight-color);
}

.faq-question {
    width: 100%;
    padding: 1rem 1.5rem;
    background: var(--highlight-color);
    border: none;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--primary-color);
}

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

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

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

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

.faq-answer {
    padding: 1.5rem;
    background: var(--white);
    border-top: 1px solid var(--medium-gray);
    animation: slideDown 0.3s ease-out;
}

.faq-answer[hidden] {
    display: none;
}

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

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

/* 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(91, 109, 205, 0.08);
}

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

.nav-item:hover,
.nav-item.active {
    color: var(--primary-color);
    background: var(--highlight-color);
}

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

.nav-item span {
    font-size: 0.7rem;
    font-weight: 500;
}

/* Footer */
footer {
    background: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
    font-size: 0.9rem;
    box-shadow: 0 -2px 10px rgba(91, 109, 205, 0.08);
}

footer a {
    color: var(--bright-color);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content h1 {
        font-size: 1.5rem;
    }
    
    .timer-display {
        font-size: 2.5rem;
    }
    
    .quick-actions {
        flex-direction: column;
    }
    
    .action-btn {
        min-width: unset;
    }
    
    .progress-overview {
        grid-template-columns: 1fr;
    }
    
    .progress-charts {
        grid-template-columns: 1fr;
    }
    
    .goals-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-controls {
        flex-direction: column;
    }
    
    .filter-controls select {
        min-width: unset;
    }
    
    .modal-content {
        margin: 10% auto;
        width: 95%;
        padding: 1.5rem;
    }
    
    .recording-controls {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    main {
        padding: 0.5rem;
    }
    
    .practice-container,
    .welcome-card,
    .recent-sessions,
    .faq-container {
        padding: 1rem;
    }
    
    .timer-display {
        font-size: 2rem;
    }
    
    .timer-btn {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .quick-stats {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for better accessibility */
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
    background: var(--highlight-color);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    }
    
    .welcome-card,
    .practice-container,
    .progress-card,
    .goal-card,
    .faq-container {
        border: 2px solid var(--primary-color);
    }
}