* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: #000000;
    color: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden; /* Prevent scrolling */
}

.container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
    text-align: center;
}

h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 40px;
    line-height: 1.4;
    color: #ffffff; /* White text as requested, could be red if preferred but 'escrito no tema' usually means BG/Accents */
}

.buttons {
    display: flex;
    flex-direction: column; /* Stack vertically on mobile usually better, but let's see. 'Sim e nao' implies options. side by side or stacked? Stacked is safer for mobile. */
    gap: 15px;
}

.btn {
    width: 100%;
    padding: 15px;
    font-size: 1.1rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    transition: transform 0.1s ease, opacity 0.2s;
    text-transform: uppercase;
}

.btn-yes {
    background-color: #ff0000; /* Red theme */
    color: #ffffff;
}

.btn-no {
    background-color: #333333; /* Dark grey for "No" to keep black theme but visible */
    color: #ffffff;
    /* Or transparent with border? Let's go with solid for touch target */
}

/* Animation class */
.btn-clicked {
    transform: scale(0.95);
    opacity: 0.8;
}

/* Loading state */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.loading-overlay.visible {
    opacity: 1;
    pointer-events: all;
}

/* Spinner if needed, or just text */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #ff0000;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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