:root {
    --black: #0a0a0a;
    --white: #ffffff;
    --gray-light: #f5f5f5;
    --gray-dark: #333333;
    --border-color: #e0e0e0;
    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

body {
    font-family: 'Barlow', sans-serif;
    background-color: var(--white);
    color: var(--black);
    line-height: 1.5;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

/* Layout */
.app-container {
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.screen.active {
    display: flex;
    opacity: 1;
}

/* Start Screen */
#start-screen {
    position: relative;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

#start-screen .content-wrapper {
    background: transparent;
    z-index: 2;
    align-items: center;
    text-align: center;
}

#start-screen .title,
#start-screen .subtitle {
    color: var(--white);
    text-align: center;
}

#start-screen .primary-btn {
    background-color: transparent;
    color: var(--white);
    border: 1px solid var(--white);
    border-radius: 999px;
    text-transform: none;
    font-weight: 600;
}

#start-screen .primary-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
}

.logo-start {
    filter: invert(1) brightness(100);
    width: 80px;
    z-index: 3;
}
@media (max-width: 768px) {
    .logo-start {
        width: 60px;
    }
}

.content-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 10%;
    z-index: 2;
    background: var(--white);
    position: relative;
}

.logo-bottom-left {
    position: absolute;
    bottom: 2rem;
    left: 2rem;
    width: 100px;
    height: auto;
    z-index: 10;
}

@media (max-width: 768px) {
    .logo-bottom-left {
        bottom: 1rem;
        left: 1rem;
        width: 65px;
    }
}

.image-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.image-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6); /* Fundo preto com opacidade */
    z-index: 1;
}

.image-wrapper img,
.image-wrapper video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 0;
    pointer-events: none;
}

/* Esconder controles de vídeo no iOS e em outros navegadores mobile */
video::-webkit-media-controls,
video::-webkit-media-controls-panel,
video::-webkit-media-controls-play-button,
video::-webkit-media-controls-start-playback-button,
video::-webkit-media-controls-overlay-play-button {
    display: none !important;
    -webkit-appearance: none !important;
    opacity: 0 !important;
}

.image-wrapper .bg-video {
    display: block;
}

.image-wrapper .bg-img {
    display: none;
}

@media (max-width: 768px) {
    .image-wrapper .bg-video {
        display: none;
    }
    .image-wrapper .bg-img {
        display: block;
    }
}

.subtitle {
    font-size: 0.95rem;
    letter-spacing: 0.05em;
    margin-bottom: 2.5rem;
    font-weight: 400;
}

.title {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

/* Buttons */
.btn {
    padding: 1.2rem 2.5rem;
    font-family: 'Barlow', sans-serif;
    font-size: 1.1rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid var(--black);
    display: inline-block;
    width: fit-content;
    -webkit-appearance: none;
    -webkit-tap-highlight-color: transparent;
}

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

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

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

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

/* Quiz Screen */
#quiz-screen {
    flex-direction: column;
    background-color: var(--gray-light);
    overflow-y: auto;
}

.quiz-header {
    width: 100%;
    padding: 1rem 5%;
    display: flex;
    align-items: center;
    gap: 2rem;
}

.progress-bar {
    flex: 1;
    height: 4px;
    background-color: #ddd;
    border-radius: 2px;
    overflow: hidden;
}

.progress {
    height: 100%;
    background-color: var(--black);
    width: 0%;
    transition: width 0.5s ease;
}

.counter {
    font-weight: 600;
    font-size: 1.2rem;
}

.quiz-content {
    background-color: transparent;
    align-items: center;
    text-align: center;
    padding-top: 0;
    padding-bottom: 3rem;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
    display: flex;
    flex-direction: column;
}

.quiz-brand-text {
    font-family: 'Barlow Condensed', sans-serif;
    font-size: 1.2rem;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    color: var(--black);
    text-transform: uppercase;
}

.quiz-brand-text .light {
    font-weight: 300;
}

.quiz-brand-text .medium {
    font-weight: 500;
}

.quiz-image-container {
    width: 90%;
    max-width: 400px;
    aspect-ratio: 1 / 1;
    margin-bottom: 1.5rem;
    border-radius: 12px;
    overflow: hidden;
}

.quiz-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.question-title {
    font-size: clamp(1.5rem, 3.5vw, 2.5rem);
    margin-bottom: 1.5rem;
    text-align: center;
}

.options-grid {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    width: 100%;
}

.option-btn {
    width: 100%;
    text-align: left;
    padding: 1rem 1.5rem;
    background-color: var(--white);
    border: 1px solid var(--border-color);
    font-family: 'Barlow', sans-serif;
    font-size: 1.05rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: flex-start;
    color: var(--black);
    -webkit-appearance: none;
    -webkit-tap-highlight-color: transparent;
}

.option-btn:hover {
    border-color: var(--black);
    background-color: var(--black);
    color: var(--white);
    transform: translateX(10px);
}

.option-letter {
    font-weight: 700;
    margin-right: 1.5rem;
    opacity: 0.5;
}

/* Result Screen */
#result-screen {
    overflow-y: auto;
}

.result-layout {
    display: flex;
    flex-direction: column;
    width: 100%;
    min-height: 100%;
}

@media (min-width: 992px) {
    #result-screen {
        overflow-y: hidden;
    }
    .result-layout {
        flex-direction: row;
        height: 100%;
    }
}

.result-image-wrapper {
    width: 100%;
    height: 50vh;
    flex: none;
    position: relative;
}

@media (min-width: 992px) {
    .result-image-wrapper {
        flex: 1;
        height: 100%;
    }
}

.result-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

@media (max-width: 991px) {
    .result-image-wrapper img.ondulado,
    .result-image-wrapper img.cacheado {
        object-position: top;
    }
}

.result-content {
    flex: none;
    padding: 10%;
    background-color: var(--black);
    color: var(--white);
    text-align: center;
}

@media (min-width: 992px) {
    .result-content {
        flex: 1;
        overflow-y: auto;
    }
}

.result-label {
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.9rem;
    opacity: 0.7;
    margin-bottom: 1rem;
    display: block;
}

.result-title {
    font-size: clamp(2.5rem, 4vw, 4rem);
    margin-bottom: 1rem;
}

.result-subtitle {
    font-size: clamp(1.2rem, 2vw, 1.8rem);
    font-weight: 400;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.result-desc {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    color: #cccccc;
}

.how-to-use {
    border-top: 1px solid #333;
    border-bottom: 1px solid #333;
    padding: 2rem 0;
    margin-bottom: 3rem;
}

.how-to-use h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.how-to-use p {
    font-size: 1.1rem;
    color: #cccccc;
}

.conclusion {
    margin-bottom: 3rem;
    font-size: 1rem;
    color: #999;
}

.conclusion p {
    margin-bottom: 0.5rem;
}

.brand-signature {
    margin-top: 2rem;
    font-size: 1.5rem;
    color: var(--white);
}

/* Animations */
.fade-in {
    animation: fadeIn 0.8s ease forwards;
}

.slide-up {
    animation: slideUp 0.6s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { 
        opacity: 0;
        transform: translateY(30px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}