/* ============================================
   Layout Styles - GitHub Primer Light Theme
   ============================================ */

/* === Container === */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.container-sm {
    max-width: 768px;
}

.container-md {
    max-width: 1012px;
}

.container-lg {
    max-width: 1280px;
}

.container-xl {
    max-width: 1400px;
}

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

.app-main {
    flex: 1;
    padding-top: var(--header-height);
}

/* === Layout Body (Legacy Support) === */
html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
}

.gh-layout-body,
.layout-body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
    background-color: var(--color-canvas-default);
}

/* Layout Wrapper */
.gh-layout-wrapper,
.layout-wrapper {
    display: flex;
    flex-direction: column;
    flex: 1 0 auto;
    min-height: 100vh;
}

/* Main Content Area */
.gh-layout-main,
.layout-main {
    flex: 1 0 auto;
    width: 100%;
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    padding: 0;
}


/* Footer Push */
.gh-footer,
.ft-footer {
    margin-top: auto;
}

/* Container Utilities */
.gh-container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.gh-container--narrow {
    max-width: 768px;
}

.gh-container--wide {
    max-width: 1440px;
}

/* Section Spacing */
.gh-section,
.section {
    margin-bottom: var(--space-12);
}

.gh-section:last-child,
.section:last-child {
    margin-bottom: 0;
}

.gh-section-header,
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-6);
}

.gh-section-title,
.section-title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    margin: 0 0 var(--space-2);
}

.gh-section-subtitle {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

/* Page Header */
.page-header,
.gh-page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) 0;
    margin-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border-default);
}

.page-title,
.gh-page-title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--color-text-primary);
    margin: 0 0 var(--space-3);
}

.gh-page-title strong,
.gh-page-title .gh-text-brand {
    color: var(--color-accent-fg);
}

.page-description,
.gh-page-desc {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    margin: 0;
}

.page-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

/* Content Wrapper (for centered form pages) */
.gh-content-wrap {
    display: flex;
    justify-content: center;
    padding: var(--space-4);
}

.gh-content-card {
    width: 100%;
    max-width: 520px;
    background-color: var(--color-canvas-default);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--space-8);
}

@media (max-width: 768px) {
    .gh-content-card {
        padding: var(--space-5);
        border-radius: var(--radius-lg);
    }
}

/* Split Layout (Form + Info) */
.gh-split-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    max-width: 1000px;
    margin: 0 auto;
}

@media (min-width: 1012px) {
    .gh-split-layout {
        grid-template-columns: 1fr 380px;
    }

    .gh-split-layout--reverse {
        grid-template-columns: 380px 1fr;
    }
}

.gh-split-main {
    background-color: var(--color-canvas-default);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-md);
}

.gh-split-aside {
    height: fit-content;
}

@media (max-width: 1011px) {
    .gh-split-aside {
        order: -1;
    }
}

/* Two Column Layout */
.layout-two-column,
.gh-two-col-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--space-6);
    max-width: 900px;
    margin: 0 auto;
}

@media (max-width: 1024px) {
    .layout-two-column,
    .gh-two-col-layout {
        grid-template-columns: 1fr;
    }

    .layout-sidebar {
        order: -1;
    }
}

.layout-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

/* Centered Content */
.gh-centered {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    text-align: center;
    padding: var(--space-8);
}

/* Background Variants */
.gh-bg-gradient {
    background: linear-gradient(180deg, var(--color-canvas-subtle) 0%, var(--color-canvas-default) 100%);
}

.gh-bg-pattern {
    background-color: var(--color-canvas-subtle);
    background-image:
        radial-gradient(circle at 25% 25%, var(--color-accent-subtle) 1px, transparent 1px),
        radial-gradient(circle at 75% 75%, var(--color-accent-subtle) 1px, transparent 1px);
    background-size: 50px 50px;
}

/* === Dashboard Layout === */
.dashboard-layout {
    display: flex;
    min-height: calc(100vh - var(--header-height));
}

.dashboard-sidebar {
    width: var(--sidebar-width, 260px);
    flex-shrink: 0;
    background: var(--color-canvas-subtle);
    border-right: 1px solid var(--color-border-default);
    padding: var(--space-4);
}

.dashboard-content {
    flex: 1;
    padding: var(--space-6);
    overflow-y: auto;
}

/* === Auth Layout === */
.auth-layout {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--space-4);
    background: var(--color-canvas-default);
}

.auth-container {
    width: 100%;
    max-width: 340px;
}

.auth-logo {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-6);
    color: var(--color-text-primary);
}

.auth-box {
    background: var(--color-canvas-subtle);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-md);
    padding: var(--space-6);
}

.auth-title {
    font-size: var(--text-xl);
    font-weight: var(--font-light);
    text-align: center;
    margin-bottom: var(--space-4);
    color: var(--color-text-primary);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin: var(--space-4) 0;
    color: var(--color-text-tertiary);
    font-size: var(--text-sm);
}

.auth-divider::before,
.auth-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--color-border-default);
}

.auth-footer {
    margin-top: var(--space-4);
    padding: var(--space-4);
    text-align: center;
    background: var(--color-canvas-default);
    border: 1px solid var(--color-border-default);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
}

.auth-social-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

/* === Sidebar === */
.sidebar {
    width: var(--sidebar-width, 260px);
    padding: var(--space-4);
    background: var(--color-canvas-subtle);
    border-right: 1px solid var(--color-border-default);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.sidebar-nav-item:hover {
    background: var(--color-neutral-subtle);
    color: var(--color-text-primary);
    text-decoration: none;
}

.sidebar-nav-item.active {
    background: var(--color-accent-subtle);
    color: var(--color-text-primary);
    font-weight: var(--font-medium);
}

.sidebar-nav-item svg {
    color: var(--color-text-tertiary);
}

.sidebar-nav-item.active svg {
    color: var(--color-accent-fg);
}

.sidebar-section {
    margin-top: var(--space-6);
}

.sidebar-section-title {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* === Grid Layouts === */
.grid {
    display: grid;
    gap: var(--space-4);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* === Responsive Visibility === */
@media (max-width: 767px) {
    .gh-hide-mobile,
    .hide-mobile {
        display: none !important;
    }

    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 768px) {
    .gh-hide-desktop,
    .hide-desktop {
        display: none !important;
    }
}

@media (max-width: 1024px) {
    .dashboard-sidebar {
        display: none;
    }
}

@media (max-width: 544px) {
    .auth-container {
        max-width: 100%;
    }

    .auth-box {
        padding: var(--space-4);
    }
}

/* ===============================
   전체 화면 로딩 오버레이
   =============================== */
.global-loading {
  position: fixed;
  inset: 0;                         /* top/right/bottom/left = 0 */
  background: rgba(0, 0, 0, 0.35);   /* 살짝 검게 */
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;                    /* 최상단 */
}

/* 숨김 처리용 */
.is-hidden {
  display: none;
}