/* Layout Components */
.app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-3) 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
    font-family: var(--font-heading);
    letter-spacing: -0.025em;
}

.header-content {
    font-family: var(--font-body);
}

.lang-option {
    font-family: var(--font-body);
    font-weight: 500;
}

.footer-content {
    font-family: var(--font-body);
}

.qr-download {
    font-family: var(--font-body);
    font-weight: 500;
    letter-spacing: 0.01em;
}

/* Language Switcher */
.lang-switch {
    display: flex;
    gap: var(--space-1);
    background: var(--color-background);
    padding: var(--space-1);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
}

.lang-option {
    padding: var(--space-2) var(--space-3);
    border: none;
    background: var(--color-background);
    border-radius: var(--radius-full);
    cursor: pointer;
    color: var(--color-text);
    font-weight: 500;
    transition: all 0.2s ease;
    min-width: 48px;
}

.lang-option:hover {
    background: var(--color-surface);
}

.lang-option.active {
    background: var(--color-primary);
    color: white;
    font-weight: 600;
}

.lang-option.active:hover {
    background: var(--color-primary);
    filter: brightness(110%);
}

/* Main Content */
.main {
    flex: 1;
    padding: var(--space-3) 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.grid-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
    order: 2; /* Move form below QR code */
}

/* QR Section comes first */
.qr-section {
    order: 1;
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--space-3);
}

@media (min-width: 768px) {
    .main {
        padding: var(--space-4) 0;
    }

    .grid-layout {
        grid-template-columns: repeat(2, 1fr);
    }

    .qr-section {
        padding: 0 var(--space-4);
    }
}

/* Footer */
.footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--space-4) 0;
    margin-top: auto;
}

.footer-content {
    text-align: center;
    color: var(--color-text);
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

/* QR Code Container */
.qr-container {
    margin: 0 auto;
    text-align: center;
    width: 100%;
}

.qr-preview {
    background: white;
    padding: var(--space-3);
    border-radius: var(--radius-lg);
    display: inline-block;
    margin-bottom: var(--space-3);
    box-shadow: var(--shadow-md);
}

.qr-controls {
    display: flex;
    gap: var(--space-2);
    justify-content: center;
    flex-wrap: wrap;
}

.qr-download {
    padding: var(--space-2) var(--space-4);
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-weight: 500;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

.qr-download:hover {
    transform: translateY(-1px);
    background: var(--color-primary);
    filter: brightness(110%);
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .lang-option,
    .qr-download {
        transition: none;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .qr-controls {
        display: none;
    }

    .main {
        padding: 0;
    }

    .grid-layout {
        display: block;
    }

    .form-section {
        display: none;
    }
}