/* Layout - Container, Header, Tabs, Sections */

.container {
    width: 100%;
    height: 100vh;
    background: var(--white);
    border-radius: 0;
    box-shadow: none;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Header */
header {
    background: var(--primary-dark);
    color: var(--white);
    padding: var(--spacing-lg) var(--spacing-4xl);
    text-align: center;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

header p {
    font-size: var(--text-md);
    margin: 0;
}

/* Utility Menu - Header (Desktop) */
.utility-menu--header {
    display: flex;
}

.utility-menu--header ul {
    display: flex;
    gap: var(--spacing-2xl);
    list-style: none;
    margin: 0;
    padding: 0;
}

.utility-menu--header a {
    color: var(--white);
    text-decoration: none;
    font-size: var(--text-md);
    transition: opacity 0.3s;
}

.utility-menu--header a:hover {
    opacity: 0.8;
}

/* Utility Menu - Nav (Mobile) */
.utility-menu--nav {
    display: none;
}

.utility-menu--nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.utility-menu--nav a {
    display: block;
    color: var(--border-light);
    text-decoration: none;
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--text-lg);
    font-weight: 700;
    transition: all 0.3s;
}

.utility-menu--nav a:hover {
    background: var(--primary-dark);
}

/* Tab Navigation */
.tabs {
    display: flex;
    background: var(--secondary-dark);
    border-bottom: 2px solid var(--primary-dark);
    flex-shrink: 0;
}

.tab-button {
    flex: 1;
    padding: var(--spacing-lg) var(--spacing-2xl);
    background: transparent;
    border: none;
    color: var(--border-light);
    font-size: var(--text-lg);
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    border-bottom: 3px solid transparent;
}

.tab-button:hover {
    background: var(--primary-dark);
}

.tab-button.active {
    background: var(--white);
    color: var(--primary-dark);
    border-bottom-color: var(--primary-blue);
}

/* Main Content Layout */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.form-section {
    flex: 0 0 400px;
    padding: var(--spacing-2xl);
    border-right: 1px solid var(--border-light);
    overflow-y: auto;
    background: var(--white);
}

.preview-section {
    flex: 1;
    padding: var(--spacing-2xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    background: var(--off-white);
    overflow-y: auto;
}

.preview-section h3 {
    margin-top: 0;
    margin-bottom: var(--spacing-lg);
    font-size: var(--text-xl);
}

/* Tab Content */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}