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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
    overflow-x: hidden;
    margin: 0;
    padding: 0;
}

/* Color Palette Variables */
:root {
    --primary: #2196F3;
    --success: #4CAF50;
    --warning: #FFC107;
    --danger: #F44336;
    --purple: #9C27B0;
    --white: #ffffff;
    --light-gray: #f5f5f5;
    --dark-gray: #666;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --border-radius: 12px;
    --sketch-border: 2px solid #333;
    --sketch-shadow: 3px 3px 0px rgba(0,0,0,0.2);
}

/* App Container */
#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 100%;
    position: relative;
    padding-bottom: 80px; /* Espaço para o bottom-nav */
    box-sizing: border-box;
    overflow-x: hidden; /* Previne scroll horizontal */
}

/* Header */
.app-header {
    background: var(--white);
    padding: 1rem;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: var(--sketch-border);
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary);
    text-shadow: 2px 2px 0px rgba(0,0,0,0.1);
}

.user-info {
    display: flex;
    gap: 1rem;
    font-size: 0.9rem;
    font-weight: 600;
}

#user-level {
    color: var(--purple);
}

#user-score {
    color: var(--success);
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 1rem;
    padding-bottom: 1rem; /* Reduzido para evitar espaço duplicado */
    min-height: 0; /* Permite que o conteúdo encolha se necessário */
}

/* Screen Management */
.screen {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

.screen.active {
    display: block;
}

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

/* Home Screen */
.welcome-banner {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    margin-bottom: 2rem;
    border: var(--sketch-border);
    box-shadow: var(--sketch-shadow);
    transform: rotate(-1deg);
}

.welcome-banner h2 {
    color: var(--primary);
    margin-bottom: 0.5rem;
    font-size: 1.8rem;
}

.welcome-banner p {
    color: var(--dark-gray);
    font-size: 1rem;
}

/* Daily Mission */
.daily-mission {
    background: var(--warning);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
    border: var(--sketch-border);
    box-shadow: var(--sketch-shadow);
    transform: rotate(1deg);
}

.daily-mission h3 {
    color: #333;
    margin-bottom: 1rem;
}

#daily-mission-text {
    margin-bottom: 1rem;
    font-weight: 500;
}

/* Category Grid */
.category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.category-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: var(--sketch-border);
    box-shadow: var(--sketch-shadow);
}

.category-card:hover {
    transform: translateY(-5px) rotate(2deg);
    box-shadow: 5px 5px 0px rgba(0,0,0,0.2);
}

.category-card:nth-child(odd) {
    transform: rotate(-1deg);
}

.category-card:nth-child(even) {
    transform: rotate(1deg);
}

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

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

.category-card p {
    color: var(--dark-gray);
    font-size: 0.9rem;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: var(--sketch-border);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--sketch-shadow);
    font-family: inherit;
    font-size: 1rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 4px 4px 0px rgba(0,0,0,0.2);
}

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

.btn-secondary {
    background: var(--light-gray);
    color: #333;
}

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

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

.btn-hint {
    background: var(--warning);
    color: #333;
}

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

/* Game Screen */
.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.game-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.game-timer {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: bold;
    color: var(--danger);
}

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

#puzzle-title {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary);
}

#puzzle-content {
    margin-bottom: 2rem;
    min-height: 200px;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 2px dashed var(--light-gray);
    border-radius: var(--border-radius);
    padding: 2rem;
}

#puzzle-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.puzzle-option {
    background: var(--light-gray);
    padding: 1rem;
    border: var(--sketch-border);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.puzzle-option:hover {
    background: var(--primary);
    color: var(--white);
    transform: scale(1.05);
}

.puzzle-option.selected {
    background: var(--success);
    color: var(--white);
}

.puzzle-option.correct {
    background: var(--success);
    color: var(--white);
}

.puzzle-option.incorrect {
    background: var(--danger);
    color: var(--white);
}

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

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: var(--sketch-border);
    box-shadow: var(--sketch-shadow);
    max-width: 90%;
    text-align: center;
}

/* Statistics Screen */
.stats-overview {
    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);
    border: var(--sketch-border);
    box-shadow: var(--sketch-shadow);
    text-align: center;
    transform: rotate(-1deg);
}

.stat-card:nth-child(even) {
    transform: rotate(1deg);
}

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

.stat-info h3 {
    color: var(--primary);
    font-size: 2rem;
    margin-bottom: 0.25rem;
}

.stat-info p {
    color: var(--dark-gray);
    font-size: 0.9rem;
}

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

.achievement-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    margin-bottom: 1rem;
    background: var(--light-gray);
    border-radius: var(--border-radius);
    border: 2px dashed var(--dark-gray);
}

.achievement-item.unlocked {
    background: var(--success);
    color: var(--white);
    border: var(--sketch-border);
}

.achievement-icon {
    font-size: 1.5rem;
}

.progress-bar {
    background: var(--light-gray);
    height: 20px;
    border-radius: 10px;
    overflow: hidden;
    margin-top: 0.5rem;
    border: 2px solid #333;
}

.progress-fill {
    background: linear-gradient(90deg, var(--success), var(--primary));
    height: 100%;
    transition: width 0.3s ease;
}

/* Settings Screen */
.settings-group {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: var(--sketch-border);
    box-shadow: var(--sketch-shadow);
    margin-bottom: 2rem;
}

.settings-group h3 {
    color: var(--primary);
    margin-bottom: 1rem;
    border-bottom: 2px dashed var(--light-gray);
    padding-bottom: 0.5rem;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px dashed var(--light-gray);
}

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

.setting-item label {
    font-weight: 500;
}

.setting-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.setting-item select {
    padding: 0.5rem;
    border: var(--sketch-border);
    border-radius: var(--border-radius);
    font-family: inherit;
}

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

.faq-item {
    border-bottom: 2px dashed var(--light-gray);
}

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

.faq-question {
    width: 100%;
    padding: 1.5rem;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.2s ease;
    font-family: inherit;
}

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

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

.faq-icon {
    font-size: 1.2rem;
    font-weight: bold;
    transition: transform 0.2s ease;
}

.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.expanded {
    padding: 1.5rem;
    max-height: 200px;
}

.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);
    display: flex;
    justify-content: space-around;
    padding: 0.75rem 0;
    border-top: var(--sketch-border);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 200; /* Aumentado para ficar acima do footer */
    height: 80px; /* Altura fixa para consistência */
    box-sizing: border-box;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--dark-gray);
    transition: all 0.2s ease;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    min-width: 60px;
}

.nav-item:hover {
    background: var(--light-gray);
    transform: translateY(-2px);
}

.nav-item.active {
    color: var(--primary);
    background: rgba(33, 150, 243, 0.1);
}

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

.nav-item span {
    font-size: 0.75rem;
    font-weight: 600;
}

/* Footer */
footer {
    background: #333;
    color: var(--white);
    text-align: center;
    padding: 1rem;
    font-size: 0.9rem;
    position: relative;
    z-index: 150; /* Aumentado para ficar acima do conteúdo mas abaixo do bottom-nav */
    margin-top: auto; /* Empurra o footer para baixo */
    margin-bottom: 80px; /* Espaço para o bottom-nav */
    border-top: var(--sketch-border);
    flex-shrink: 0; /* Impede que o footer encolha */
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1); /* Sombra para destacar */
}

/* Visual Puzzle Specific Styles */
.visual-pattern {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    max-width: 300px;
    margin: 0 auto;
}

.pattern-cell {
    width: 60px;
    height: 60px;
    border: 2px solid #333;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: var(--white);
}

.pattern-cell.filled {
    background: var(--primary);
    color: var(--white);
}

.pattern-cell.question {
    background: var(--light-gray);
    border-style: dashed;
}

/* Numerical Puzzle Styles */
.number-sequence {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

.number-cell {
    width: 60px;
    height: 60px;
    background: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    border-radius: var(--border-radius);
    border: var(--sketch-border);
}

.number-cell.question {
    background: var(--light-gray);
    color: #333;
    border-style: dashed;
}

/* 360 Mode Styles */
.puzzle-360 {
    perspective: 1000px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.cube-container {
    width: 200px;
    height: 200px;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 1s;
}

.cube-face {
    position: absolute;
    width: 200px;
    height: 200px;
    border: var(--sketch-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    font-weight: bold;
}

.cube-face.front { background: var(--primary); color: white; transform: rotateY(0deg) translateZ(100px); }
.cube-face.back { background: var(--success); color: white; transform: rotateY(180deg) translateZ(100px); }
.cube-face.right { background: var(--warning); color: #333; transform: rotateY(90deg) translateZ(100px); }
.cube-face.left { background: var(--danger); color: white; transform: rotateY(-90deg) translateZ(100px); }
.cube-face.top { background: var(--purple); color: white; transform: rotateX(90deg) translateZ(100px); }
.cube-face.bottom { background: var(--light-gray); color: #333; transform: rotateX(-90deg) translateZ(100px); }

.rotation-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .category-grid {
        grid-template-columns: 1fr;
    }
    
    .game-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .game-info,
    .game-timer {
        text-align: center;
    }
    
    .stats-overview {
        grid-template-columns: 1fr;
    }
    
    .number-sequence {
        gap: 0.5rem;
    }
    
    .number-cell {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .visual-pattern {
        max-width: 250px;
    }
    
    .pattern-cell {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .cube-container {
        width: 150px;
        height: 150px;
    }
    
    .cube-face {
        width: 150px;
        height: 150px;
        font-size: 2rem;
    }
    
    .cube-face.front,
    .cube-face.back { transform: rotateY(0deg) translateZ(75px); }
    .cube-face.back { transform: rotateY(180deg) translateZ(75px); }
    .cube-face.right { transform: rotateY(90deg) translateZ(75px); }
    .cube-face.left { transform: rotateY(-90deg) translateZ(75px); }
    .cube-face.top { transform: rotateX(90deg) translateZ(75px); }
    .cube-face.bottom { transform: rotateX(-90deg) translateZ(75px); }
    
    /* Ajustes para o footer em mobile */
    footer {
        margin-bottom: 80px;
        padding: 0.75rem;
        font-size: 0.8rem;
    }
    
    #app {
        padding-bottom: 80px;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 0.5rem;
        padding-bottom: 0.5rem; /* Ajustado para consistência */
    }
    
    .puzzle-container {
        padding: 1rem;
    }
    
    .welcome-banner {
        padding: 1.5rem;
    }
    
    .daily-mission {
        padding: 1rem;
    }
    
    .btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
    
    .nav-item span {
        font-size: 0.7rem;
    }
}

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

.pulse {
    animation: pulse 2s infinite;
}

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

.bounce {
    animation: bounce 1s;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.shake {
    animation: shake 0.5s;
}

/* Loading States */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--light-gray);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 1s ease-in-out infinite;
}

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

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

/* Focus styles for keyboard navigation */
.btn:focus,
.nav-item:focus,
.faq-question:focus,
.puzzle-option:focus {
    outline: 3px solid var(--warning);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --shadow: 0 2px 10px rgba(0,0,0,0.3);
        --sketch-shadow: 4px 4px 0px rgba(0,0,0,0.4);
    }
}