/* Screen Management */
.screen {
    display: none;
    min-height: 100vh;
    width: 100%;
}

.screen.active {
    display: block;
}

/* Specific for Test Screen which must be fully centered and pristine white */
#test-screen.active {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #FFFFFF !important;
    color: #000000 !important;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 99999;
}

/* Let the instruction screen use the main theme layout */
.instruction-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 40px;
    padding-bottom: 40px;
}

.instruction-main h1 {
    margin-bottom: 30px;
    text-align: center;
}

.instructions-list {
    margin: 20px 0 30px 20px;
}

.instructions-list li {
    margin-bottom: 12px;
    font-size: 1.1rem;
    color: var(--dk-muted);
}

.checkbox-container {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
    font-size: 1.1rem;
    color: var(--ink);
}

.checkbox-container input {
    margin-right: 12px;
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary);
}

.checkbox-container label {
    cursor: pointer;
}

#start-btn {
    width: 100%;
    margin-top: 10px;
    text-align: center;
}

#start-btn[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Test Screen overrides */
.test-header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 30px 50px;
    font-size: 24px;
    font-weight: bold;
    color: #444;
}

.timer {
    color: #d9534f; /* Red color for timer to indicate urgency */
}

.word-display-container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
}

.word {
    font-size: 6rem;
    font-weight: bold;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-align: center;
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif; /* simple clear font for testing */
}

/* Completion Screen */
.completion-container {
    text-align: center;
    max-width: 600px;
    margin: 60px auto;
}

.completion-container h3 {
    color: var(--primary);
    margin-bottom: 20px;
    font-size: 2rem;
}

.completion-container p {
    color: var(--dk-muted);
    font-size: 1.2rem;
    margin-bottom: 40px;
}

#home-btn {
    display: inline-block;
}

/* Responsive */
@media (max-width: 600px) {
    .word {
        font-size: 3rem;
    }
    .test-header {
        padding: 20px 20px;
        font-size: 18px;
    }
}