/* ============================================
   MÃOS QUE FALAM - CSS Global
   ============================================ */

:root {
    /* Paleta de cores vibrantes e alegres */
    --primary-blue: #4A90E2;
    --primary-yellow: #FFD93D;
    --primary-green: #6BCF7F;
    --primary-purple: #B085FF;
    --primary-orange: #FF9A5C;
    --primary-pink: #FF6B9D;
    --primary-cyan: #4DD0E1;
    --primary-lime: #9CCC65;
    
    /* Cores de feedback */
    --success-green: #4CAF50;
    --success-light: #E8F5E9;
    --error-red: #F44336;
    --error-light: #FFEBEE;
    
    /* Cores neutras */
    --white: #FFFFFF;
    --light-gray: #F5F7FA;
    --medium-gray: #D1D8E0;
    --dark-gray: #2C3E50;
    --text-dark: #2C3E50;
    
    /* Sombras */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
    --shadow-color: 0 4px 20px rgba(74, 144, 226, 0.3);
    
    /* Transições */
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--text-dark);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* ============================================
   HEADER
   ============================================ */

.header {
    background: var(--white);
    padding: 20px 30px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo i {
    font-size: 2.5rem;
    color: var(--primary-blue);
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.progress-bar {
    position: relative;
    width: 250px;
    height: 30px;
    background: var(--light-gray);
    border-radius: 15px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-green), var(--primary-blue));
    border-radius: 15px;
    transition: width 0.5s ease;
    width: 0%;
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text-dark);
}

/* ============================================
   PAGE TRANSITIONS
   ============================================ */

.page {
    display: none;
    animation: fadeIn 0.5s ease;
}

.page.active {
    display: block;
}

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

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    background: var(--white);
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow-md);
    text-align: center;
}

.hero-icon {
    font-size: 4rem;
    color: var(--primary-yellow);
    margin-bottom: 20px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin-bottom: 15px;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--primary-purple);
    font-weight: 600;
    margin-bottom: 20px;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--dark-gray);
    max-width: 800px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

/* ============================================
   LEVELS & LESSONS
   ============================================ */

.levels-container {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-top: 40px;
}

.level-card {
    background: linear-gradient(135deg, var(--light-gray) 0%, var(--white) 100%);
    border-radius: 20px;
    padding: 30px;
    border: 3px solid var(--primary-blue);
    box-shadow: var(--shadow-md);
}

.level-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.level-header i {
    font-size: 2rem;
    color: var(--primary-yellow);
}

.level-header h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.level-description {
    font-size: 1rem;
    color: var(--dark-gray);
    margin-bottom: 25px;
}

.lessons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.lesson-btn {
    background: var(--white);
    border: 3px solid var(--primary-blue);
    border-radius: 15px;
    padding: 20px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: 'Poppins', sans-serif;
    box-shadow: var(--shadow-sm);
}

.lesson-btn i {
    font-size: 1.5rem;
    color: var(--primary-blue);
}

.lesson-btn:hover:not(.locked) {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    color: var(--white);
    border-color: var(--primary-purple);
}

.lesson-btn:hover:not(.locked) i {
    color: var(--white);
}

.lesson-btn.unlocked {
    background: linear-gradient(135deg, var(--primary-green) 0%, #4CAF50 100%);
    color: var(--white);
    border-color: var(--primary-green);
}

.lesson-btn.unlocked i {
    color: var(--white);
}

.lesson-btn.locked {
    background: var(--light-gray);
    border-color: var(--medium-gray);
    color: var(--medium-gray);
    cursor: not-allowed;
    opacity: 0.6;
}

.lesson-btn.locked i {
    color: var(--medium-gray);
}

.lesson-btn.special {
    background: linear-gradient(135deg, var(--primary-yellow), var(--primary-orange));
    border-color: var(--primary-orange);
}

/* ============================================
   LESSON CONTENT
   ============================================ */

.lesson-navigation {
    background: var(--white);
    padding: 20px 30px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 15px;
}

.nav-btn {
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    padding: 12px 25px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Poppins', sans-serif;
}

.nav-btn:hover {
    background: var(--primary-purple);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.lesson-progress {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-blue);
}

.lesson-slide {
    background: var(--white);
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow-md);
    min-height: 500px;
}

/* ============================================
   SLIDE TYPES
   ============================================ */

/* Slide 1: Apresentação */
.slide-apresentacao {
    text-align: center;
}

.slide-apresentacao h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.slide-apresentacao .subtitle {
    font-size: 1.3rem;
    color: var(--primary-purple);
    margin-bottom: 30px;
}

.slide-apresentacao .icon-container {
    font-size: 5rem;
    color: var(--primary-yellow);
    margin: 30px 0;
    animation: pulse 2s infinite;
}

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

.slide-apresentacao .description {
    font-size: 1.2rem;
    color: var(--dark-gray);
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto 30px;
}

/* Slide 2: Explicação */
.slide-explicacao h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 25px;
    text-align: center;
}

.video-placeholder {
    background: linear-gradient(135deg, var(--light-gray), var(--medium-gray));
    border: 4px dashed var(--primary-blue);
    border-radius: 15px;
    padding: 60px 30px;
    text-align: center;
    margin: 25px 0;
    min-height: 350px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.video-placeholder i {
    font-size: 4rem;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.video-placeholder p {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark-gray);
}

.explanation-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 25px;
}

.explanation-card {
    background: var(--light-gray);
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    border: 3px solid var(--primary-green);
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: var(--transition);
}

.explanation-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-color);
    border-color: var(--primary-blue);
}

.explanation-card:nth-child(even) {
    border-color: var(--primary-purple);
}

.explanation-card:nth-child(3n) {
    border-color: var(--primary-orange);
}

.explanation-card:nth-child(4n) {
    border-color: var(--primary-pink);
}

.explanation-card h3 {
    font-size: 1.5rem;
    color: var(--primary-blue);
    margin-bottom: 5px;
    font-weight: 700;
}

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

.explanation-card .video-placeholder {
    margin-top: 10px;
}

/* Slide 3: Prática Guiada */
.slide-pratica-guiada h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 25px;
    text-align: center;
}

.pratica-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.pratica-item {
    background: var(--light-gray);
    border-radius: 15px;
    padding: 25px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 3px solid var(--primary-yellow);
    text-align: center;
}

.pratica-video {
    background: var(--medium-gray);
    border: 3px dashed var(--primary-blue);
    border-radius: 12px;
    width: 100%;
    height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.pratica-video i {
    font-size: 3rem;
    color: var(--primary-blue);
}

.pratica-video p {
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--dark-gray);
    font-weight: 600;
}

/* Slide 4: Atividade Interativa */
.slide-atividade h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 25px;
    text-align: center;
}

.question-container {
    background: var(--light-gray);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 25px;
}

.question-text {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 25px;
    text-align: center;
}

.options-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.option-btn {
    background: var(--white);
    border: 3px solid var(--primary-blue);
    border-radius: 12px;
    padding: 20px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    cursor: pointer;
    transition: var(--transition);
    font-family: 'Poppins', sans-serif;
    text-align: center;
}

.option-btn:nth-child(1) { border-color: var(--primary-blue); }
.option-btn:nth-child(2) { border-color: var(--primary-green); }
.option-btn:nth-child(3) { border-color: var(--primary-orange); }
.option-btn:nth-child(4) { border-color: var(--primary-purple); }

.option-btn:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    color: var(--white);
    border-color: var(--primary-purple);
}

.option-btn:nth-child(1):hover:not(:disabled) {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-cyan));
}

.option-btn:nth-child(2):hover:not(:disabled) {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-lime));
}

.option-btn:nth-child(3):hover:not(:disabled) {
    background: linear-gradient(135deg, var(--primary-orange), var(--primary-yellow));
}

.option-btn:nth-child(4):hover:not(:disabled) {
    background: linear-gradient(135deg, var(--primary-purple), var(--primary-pink));
}

.option-btn.correct {
    background: var(--success-green);
    color: var(--white);
    border-color: var(--success-green);
}

.option-btn.incorrect {
    background: var(--error-red);
    color: var(--white);
    border-color: var(--error-red);
    animation: shake 0.5s;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.option-btn:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.feedback-message {
    margin-top: 25px;
    padding: 20px;
    border-radius: 12px;
    font-size: 1.2rem;
    font-weight: 600;
    text-align: center;
    display: none;
}

.feedback-message.show {
    display: block;
    animation: fadeIn 0.5s ease;
}

.feedback-message.success {
    background: var(--success-light);
    color: var(--success-green);
    border: 3px solid var(--success-green);
}

.feedback-message.error {
    background: var(--error-light);
    color: var(--error-red);
    border: 3px solid var(--error-red);
}

/* Slide 5: Conclusão */
.slide-conclusao {
    text-align: center;
}

.slide-conclusao h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-green);
    margin-bottom: 20px;
}

.slide-conclusao .celebration-icon {
    font-size: 5rem;
    color: var(--primary-yellow);
    margin: 30px 0;
    animation: celebration 1s ease-in-out infinite;
}

@keyframes celebration {
    0%, 100% { transform: rotate(-10deg); }
    50% { transform: rotate(10deg); }
}

.slide-conclusao .message {
    font-size: 1.3rem;
    color: var(--dark-gray);
    margin-bottom: 30px;
    line-height: 1.8;
}

.slide-conclusao .achievement {
    background: linear-gradient(135deg, var(--primary-yellow), var(--primary-orange));
    border-radius: 15px;
    padding: 25px;
    margin: 30px auto;
    max-width: 500px;
}

.slide-conclusao .achievement h3 {
    font-size: 1.5rem;
    color: var(--white);
    font-weight: 700;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    color: var(--white);
    border: none;
    padding: 15px 35px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    font-family: 'Poppins', sans-serif;
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-blue);
    border: 3px solid var(--primary-blue);
    padding: 15px 35px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    font-family: 'Poppins', sans-serif;
}

.btn-secondary:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-3px);
}

/* Certificado */
.certificate-container {
    background: linear-gradient(135deg, var(--white) 0%, var(--light-gray) 100%);
    border: 8px solid var(--primary-yellow);
    border-radius: 20px;
    padding: 50px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    max-width: 800px;
    margin: 0 auto;
}

.certificate-header {
    font-size: 3rem;
    color: var(--primary-blue);
    font-weight: 800;
    margin-bottom: 20px;
}

.certificate-body {
    font-size: 1.2rem;
    color: var(--dark-gray);
    margin: 30px 0;
    line-height: 2;
}

.certificate-name {
    font-size: 2rem;
    color: var(--primary-purple);
    font-weight: 700;
    margin: 20px 0;
}

.certificate-seal {
    font-size: 4rem;
    color: var(--primary-yellow);
    margin-top: 30px;
}

/* Vídeo de Transição */
.slide-video-transicao {
    text-align: center;
}

.slide-video-transicao h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 30px;
}

.video-transicao {
    min-height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.video-transicao i {
    font-size: 5rem;
}

/* Atividade de Ligar */
.slide-atividade-ligar h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 20px;
    text-align: center;
}

.ligar-instrucao {
    text-align: center;
    font-size: 1.1rem;
    color: var(--dark-gray);
    margin-bottom: 40px;
    padding: 15px;
    background: var(--light-gray);
    border-radius: 12px;
    border-left: 4px solid var(--primary-purple);
}

.ligar-instrucao i {
    color: var(--primary-purple);
    margin-right: 8px;
}

.ligar-container {
    display: grid;
    grid-template-columns: 1fr 100px 1fr;
    gap: 0;
    margin-bottom: 30px;
    align-items: start;
}

.ligar-column {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.ligar-words-column {
    justify-content: flex-start;
    align-items: stretch;
    padding-right: 20px;
}

.ligar-videos-column {
    justify-content: flex-start;
    align-items: stretch;
    padding-left: 20px;
}

.ligar-separator {
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
    justify-content: flex-start;
    padding-top: 20px;
}

.ligar-line {
    width: 3px;
    height: 160px;
    background: linear-gradient(180deg, var(--primary-blue), var(--primary-purple));
    border-radius: 2px;
    opacity: 0.3;
}

.ligar-left {
    display: flex;
    justify-content: stretch;
}

.ligar-right {
    display: flex;
    justify-content: stretch;
}

.ligar-word-btn {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
    color: var(--white);
    border: none;
    border-radius: 15px;
    padding: 22px 30px;
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    font-family: 'Poppins', sans-serif;
    box-shadow: var(--shadow-md);
    width: 100%;
    text-align: center;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ligar-word-btn:hover:not(:disabled) {
    transform: translateX(-5px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.ligar-word-btn.selected {
    background: linear-gradient(135deg, var(--primary-yellow), var(--primary-orange));
    transform: translateX(-5px) scale(1.05);
    box-shadow: 0 0 25px rgba(255, 217, 61, 0.7);
    animation: pulse-select 0.6s ease-in-out;
}

@keyframes pulse-select {
    0%, 100% { transform: translateX(-5px) scale(1.05); }
    50% { transform: translateX(-5px) scale(1.08); }
}

.ligar-word-btn.correct-match {
    background: linear-gradient(135deg, var(--success-green), #45a049);
    cursor: not-allowed;
    transform: scale(1);
}

.ligar-word-btn:disabled {
    opacity: 0.8;
}

.video-placeholder-small {
    background: var(--light-gray);
    border: 4px dashed var(--primary-blue);
    border-radius: 15px;
    padding: 25px;
    width: 100%;
    min-height: 160px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.video-placeholder-small:hover:not(.matched) {
    transform: translateX(5px) scale(1.02);
    border-color: var(--primary-purple);
    background: #f0f4ff;
    box-shadow: var(--shadow-md);
    cursor: pointer;
}

.video-placeholder-small i {
    font-size: 3rem;
    color: var(--primary-blue);
    margin-bottom: 10px;
}

.video-placeholder-small.matched {
    background: linear-gradient(135deg, var(--success-light), #c8e6c9);
    border-color: var(--success-green);
    border-style: solid;
    cursor: default;
    transform: scale(1);
}

.video-placeholder-small.matched i {
    color: var(--success-green);
}

.video-placeholder-small p {
    font-size: 0.9rem;
    color: var(--dark-gray);
    font-weight: 600;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .logo h1 {
        font-size: 1.3rem;
    }
    
    .logo i {
        font-size: 2rem;
    }
    
    .progress-bar {
        width: 100%;
    }
    
    .hero {
        padding: 25px;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .level-card {
        padding: 20px;
    }
    
    .lessons-grid {
        grid-template-columns: 1fr;
    }
    
    .lesson-slide {
        padding: 25px;
    }
    
    .pratica-item {
        flex-direction: column;
    }
    
    .pratica-video {
        min-width: 100%;
    }
    
    .certificate-container {
        padding: 30px 20px;
    }
    
    .certificate-header {
        font-size: 2rem;
    }
    
    /* Atividade de Ligar - Mobile */
    .ligar-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .ligar-words-column,
    .ligar-videos-column {
        align-items: stretch;
        padding: 0;
    }
    
    .ligar-separator {
        display: none;
    }
    
    .ligar-word-btn {
        min-height: 70px;
    }
    
    .video-placeholder-small {
        min-height: 140px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 15px;
    }
    
    .header {
        padding: 15px;
    }
    
    .action-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
        justify-content: center;
    }
}