/* ========================================
   Layout System
   Header, iki panel layout, footer
   ======================================== */

/* --- App Container --- */
#app {
    display: none;
    flex-direction: column;
    min-height: 100vh;
}

#app.active {
    display: flex;
}

/* --- Header --- */
.header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-xl);
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
}

.header__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    letter-spacing: var(--letter-spacing-tight);
    color: var(--color-text-primary);
    user-select: none;
}

.header__logo-icon {
    width: 28px;
    height: 28px;
    color: var(--color-accent);
}

.header__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* --- Main Content: Split Panel --- */
.main {
    display: flex;
    flex: 1;
    overflow: hidden;
    height: calc(100vh - var(--header-height));
}

/* --- Editor Panel (Sol) --- */
.editor-panel {
    width: var(--sidebar-width);
    min-width: 360px;
    max-width: 520px;
    display: flex;
    flex-direction: column;
    background-color: var(--color-bg-secondary);
    border-right: 1px solid var(--color-border);
    overflow: hidden;
}

.editor-panel__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.editor-panel__title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
}

.editor-panel__body {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-xl);
}

/* --- Preview Panel (Sag) --- */
.preview-panel {
    flex: 1;
    min-width: var(--preview-min-width);
    display: flex;
    flex-direction: column;
    background-color: var(--color-bg-tertiary);
    overflow: hidden;
}

.preview-panel__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.preview-panel__title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
}

.preview-panel__body {
    flex: 1;
    overflow: auto;
    display: flex;
    justify-content: center;
    padding: var(--spacing-2xl);
}

/* --- Resize Handle --- */
.resize-handle {
    width: 4px;
    cursor: col-resize;
    background-color: transparent;
    transition: background-color var(--transition-base);
    flex-shrink: 0;
    position: relative;
}

.resize-handle:hover,
.resize-handle.active {
    background-color: var(--color-accent);
}

/* --- Template Picker (Landing) --- */
.template-picker {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - var(--header-height));
    padding: var(--spacing-4xl) var(--spacing-xl);
}

.template-picker__heading {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.template-picker__subheading {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-3xl);
    text-align: center;
    max-width: 480px;
}

.template-picker__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    width: 100%;
    max-width: 960px;
}

.template-card {
    position: relative;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-xl);
    background-color: var(--color-bg-secondary);
    overflow: hidden;
    cursor: pointer;
    transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.template-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.template-card.selected {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-focus), var(--shadow-md);
}

.template-card__preview {
    aspect-ratio: 210 / 297;
    background-color: var(--color-bg-tertiary);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    overflow: hidden;
}

.template-card__info {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.template-card__name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
}

.template-card__desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--spacing-2xs);
}

/* --- Mobile Tab Bar (hidden on desktop) --- */
.mobile-tabs {
    display: none;
}

/* --- Footer --- */
.main-footer {
    width: 100%;
    max-width: 960px;
    margin-top: var(--spacing-4xl);
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-3xl);
    color: var(--color-text-secondary);
}

.footer-container {
    display: grid;
    grid-template-columns: 1.2fr 2fr;
    gap: var(--spacing-3xl);
    text-align: left;
    margin-bottom: var(--spacing-2xl);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-xl);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}

.footer-logo svg {
    color: var(--color-accent);
}

.footer-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: 1.6;
}

.footer-socials {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xs);
}

.footer-socials a {
    color: var(--color-text-muted);
    transition: color var(--transition-base), transform var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-socials a:hover {
    color: var(--color-accent);
    transform: translateY(-2px);
}

.footer-column h4 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-column a {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition-base);
}

.footer-column a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
    text-align: center;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* ========================================
   Legal & Kurumsal Belgeler Görünümü
   ======================================== */
#legal-view {
    max-width: 960px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-xl);
    min-height: calc(100vh - var(--header-height));
}

.legal-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: var(--spacing-3xl);
    width: 100%;
}

/* Sidebar */
.legal-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    border-right: 1px solid var(--color-border);
    padding-right: var(--spacing-xl);
}

.legal-sidebar__group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.legal-sidebar__group-title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
    padding-left: var(--spacing-xs);
}

.legal-sidebar__links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.legal-sidebar__link {
    width: 100%;
    text-align: left;
    background: transparent;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-base), color var(--transition-base);
    font-weight: var(--font-weight-medium);
}

.legal-sidebar__link:hover {
    background: var(--color-bg-alt);
    color: var(--color-text-primary);
}

.legal-sidebar__link.active {
    background: var(--color-accent-light, rgba(37, 99, 235, 0.08));
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
}

/* Content Area */
.legal-content {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl);
    box-shadow: var(--shadow-sm);
    text-align: left;
}

.legal-content__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--color-border);
    padding-bottom: var(--spacing-sm);
}

.legal-content__body {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.legal-content__body h3 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-xs);
}

.legal-content__body h3:first-of-type {
    margin-top: 0;
}

.legal-content__body p {
    margin-bottom: var(--spacing-md);
}

.legal-content__body ul {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-xl);
    list-style-type: disc;
}

.legal-content__body li {
    margin-bottom: var(--spacing-xs);
}

/* ========================================
   Landing page Features & FAQ sections
   ======================================== */
.landing-section {
    width: 100%;
    max-width: 960px;
    margin-top: var(--spacing-4xl);
    text-align: center;
}

.landing-section__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-2xl);
    position: relative;
    display: inline-block;
}

.landing-section__title::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background-color: var(--color-accent);
    border-radius: 2px;
}

/* Features Grid */
.landing-features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-xl);
    text-align: left;
}

.feature-card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.feature-card__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background-color: var(--color-accent-light, rgba(37, 99, 235, 0.08));
    color: var(--color-accent);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
}

.feature-card__title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.feature-card__desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* FAQ Accordion */
.landing-faq {
    margin-bottom: var(--spacing-3xl);
}

.faq-list {
    max-width: 720px;
    margin: 0 auto;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.faq-item {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition-base);
}

.faq-item[open] {
    border-color: var(--color-accent);
}

.faq-item__question {
    padding: var(--spacing-md) var(--spacing-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    cursor: pointer;
    list-style: none;
    position: relative;
    user-select: none;
}

.faq-item__question::-webkit-details-marker {
    display: none;
}

.faq-item__question::after {
    content: '+';
    position: absolute;
    right: var(--spacing-xl);
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
    font-weight: normal;
    color: var(--color-text-secondary);
    transition: transform var(--transition-base);
}

.faq-item[open] .faq-item__question::after {
    content: '−';
    color: var(--color-accent);
}

.faq-item__answer {
    padding: 0 var(--spacing-xl) var(--spacing-md) var(--spacing-xl);
    color: var(--color-text-secondary);
    line-height: 1.6;
    font-size: var(--font-size-sm);
    border-top: 1px solid transparent;
}

.faq-item[open] .faq-item__answer {
    border-top-color: var(--color-border);
    padding-top: var(--spacing-sm);
}