/* Layout Styles */

/* ─── Questionnaire screens ──────────────────────────────────────────────── */
/* Only the screen that has .active is rendered; all others are hidden.       */
.questionnaire-screen {
    display: none;
}

.questionnaire-screen.active {
    display: block;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--page-margin-x-mobile);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--page-margin-x-tablet);
    }
}

@media (min-width: 992px) {
    .container {
        padding: 0 var(--page-margin-x-desktop);
    }
}

/* Main Content */
.main-content {
    min-height: calc(100vh - 200px);
    padding: var(--page-margin-y-mobile) 0;
}

@media (min-width: 768px) {
    .main-content {
        padding: var(--page-margin-y-tablet) 0;
    }
}

@media (min-width: 992px) {
    .main-content {
        padding: var(--page-margin-y-desktop) 0;
    }
}

/* Section Container */
.section {
    margin-bottom: var(--section-gap-mobile);
}

@media (min-width: 768px) {
    .section {
        margin-bottom: var(--section-gap);
    }
}

/* Showcase Styles (for component library demo) */
.showcase-section {
    margin-bottom: var(--space-9);
}

.showcase-title {
    margin-bottom: var(--space-4);
}

.section-title {
    margin-bottom: var(--space-5);
    padding-bottom: var(--space-3);
    border-bottom: 2px solid var(--color-gray-20);
}

/* Grid Layout */
.grid {
    display: grid;
    gap: var(--space-5);
}

.grid-2 {
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
}

.grid-3 {
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Flexbox Utilities */
.flex {
    display: flex;
}

.flex-column {
    flex-direction: column;
}

.flex-wrap {
    flex-wrap: wrap;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.align-center {
    align-items: center;
}

.gap-small {
    gap: var(--space-2);
}

.gap-medium {
    gap: var(--space-4);
}

.gap-large {
    gap: var(--space-6);
}

/* Skip Link (Accessibility) */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--color-primary-100);
    color: var(--color-white);
    padding: var(--space-2) var(--space-4);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    z-index: 10000;
}

.skip-link:focus {
    top: 0;
    outline: var(--focus-outline-width) solid var(--color-primary-80);
    outline-offset: 2px;
}

/* Visually Hidden (for screen readers only) */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}