/**
 * style.layout.css
 * 사이드바, 메인 레이아웃, 그리드 시스템
 */

/* ===================================
   Layout Variables
   =================================== */
:root {
    --sidebar-width-left: 280px;
    --sidebar-width-right: 320px;
    --sidebar-bg: #fdfbf9;
    --sidebar-border: rgba(201, 168, 124, 0.2);
    --sidebar-shadow: 0 4px 30px rgba(154, 123, 79, 0.08);
    --sidebar-transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --sidebar-accent: #c9a87c;
    --sidebar-accent-light: #e8dcc8;
    --sidebar-accent-dark: #9a7b4f;
    --sidebar-text: #4a4a4a;
    --sidebar-text-light: #8a8a8a;
}

/* ===================================
   Main Content
   =================================== */
.main-content {
    margin-left: var(--sidebar-width-left);
    margin-right: var(--sidebar-width-right);
    min-height: 100vh;
    transition: var(--sidebar-transition);
}

/* ===================================
   Sidebar Common
   =================================== */
.sidebar {
    position: fixed;
    top: 0;
    height: 100vh;
    z-index: 1000;
    background: var(--sidebar-bg);
    box-shadow: var(--sidebar-shadow);
    overflow-y: auto;
    overflow-x: hidden;
    transition: var(--sidebar-transition);
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb {
    background: var(--sidebar-accent-light);
    border-radius: 4px;
}

/* ===================================
   Left Sidebar
   =================================== */
.sidebar-left {
    left: 0;
    width: var(--sidebar-width-left);
    border-right: 1px solid var(--sidebar-border);
    display: flex;
    flex-direction: column;
}

/* Logo */
.sidebar-logo {
    padding: 32px 24px;
    text-align: center;
    border-bottom: 1px solid var(--sidebar-border);
    background: linear-gradient(180deg, #fff 0%, var(--sidebar-bg) 100%);
}

.sidebar-logo .logo-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--sidebar-accent);
    border-radius: 50%;
    color: #fff;
    font-size: 20px;
}

.sidebar-logo .logo-text {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--sidebar-text);
}

.sidebar-logo .logo-tagline {
    font-size: 0.75rem;
    color: var(--sidebar-text-light);
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* Navigation */
.sidebar-nav {
    flex: 1;
    padding: 24px 0;
}

.nav-section {
    margin-bottom: 24px;
}

.nav-section-title {
    padding: 0 24px;
    margin-bottom: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--sidebar-accent);
    letter-spacing: 2px;
    text-transform: uppercase;
}

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

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 14px 24px;
    color: var(--sidebar-text);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 400;
    transition: var(--sidebar-transition);
    position: relative;
    white-space: nowrap;
}

.nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--sidebar-accent);
    border-radius: 0 3px 3px 0;
    transition: height 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--sidebar-accent-dark);
    background: rgba(201, 168, 124, 0.08);
}

.nav-link:hover::before,
.nav-link.active::before {
    height: 60%;
}

.nav-link i {
    width: 20px;
    margin-right: 14px;
    font-size: 1.1rem;
    text-align: center;
    opacity: 0.7;
    transition: var(--sidebar-transition);
}

.nav-link:hover i,
.nav-link.active i {
    opacity: 1;
    color: var(--sidebar-accent);
}

.nav-link > span:not(.badge) {
    flex: 1;
}

/* Submenu */
.nav-item.has-submenu > .nav-link::after {
    content: '\F282';
    font-family: 'bootstrap-icons';
    margin-left: 8px;
    font-size: 0.8rem;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.nav-item.has-submenu.open > .nav-link::after {
    transform: rotate(180deg);
}

.submenu {
    max-height: 0;
    overflow: hidden;
    background: rgba(201, 168, 124, 0.04);
    transition: max-height 0.4s ease;
}

.nav-item.has-submenu.open .submenu {
    max-height: 300px;
}

.submenu .nav-link {
    padding: 10px 24px 10px 58px;
    font-size: 0.875rem;
}

/* Social Links */
.sidebar-social {
    padding: 20px 24px;
    border-top: 1px solid var(--sidebar-border);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.social-link {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    border: 1px solid var(--sidebar-border);
    border-radius: 50%;
    color: var(--sidebar-text-light);
    transition: var(--sidebar-transition);
}

.social-link:hover {
    background: var(--sidebar-accent);
    border-color: var(--sidebar-accent);
    color: #fff;
}

/* Copyright */
.sidebar-copyright {
    padding: 16px 24px;
    text-align: center;
    font-size: 0.7rem;
    color: var(--sidebar-text-light);
    border-top: 1px solid var(--sidebar-border);
}

/* ===================================
   Right Sidebar
   =================================== */
.sidebar-right {
    right: 0;
    width: var(--sidebar-width-right);
    border-left: 1px solid var(--sidebar-border);
}

/* ===================================
   Toggle Buttons
   =================================== */
.sidebar-toggle {
    position: fixed;
    top: 50%;
    margin-top: -28px;
    width: 24px;
    height: 56px;
    background: var(--sidebar-bg);
    border: 1px solid var(--sidebar-border);
    cursor: pointer;
    z-index: 1001;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sidebar-accent);
    font-size: 0.85rem;
    transition: var(--sidebar-transition);
    border-radius: 6px;
}

.sidebar-toggle:hover {
    background: var(--sidebar-accent);
    color: #fff;
}

.sidebar-toggle-left {
    left: calc(var(--sidebar-width-left) - 12px);
}

.sidebar-toggle-right {
    right: calc(var(--sidebar-width-right) - 12px);
}

/* Collapsed State */
.sidebar-left.collapsed {
    transform: translateX(-100%);
}

.sidebar-right.collapsed {
    transform: translateX(100%);
}

.sidebar-left.collapsed ~ .main-content,
body.sidebar-left-collapsed .main-content {
    margin-left: 0;
}

.sidebar-right.collapsed ~ .main-content,
body.sidebar-right-collapsed .main-content {
    margin-right: 0;
}

/* Toggle Button Position When Collapsed */
body.sidebar-left-collapsed .sidebar-toggle-left,
.sidebar-left.collapsed ~ .sidebar-toggle-left {
    left: 0;
    border-radius: 0 6px 6px 0;
    border-left: none;
}

body.sidebar-right-collapsed .sidebar-toggle-right,
.sidebar-right.collapsed ~ .sidebar-toggle-right {
    right: 0;
    border-radius: 6px 0 0 6px;
    border-right: none;
}

/* Overlay */
.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--sidebar-transition);
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ===================================
   Page Wrapper
   =================================== */
.page-wrapper {
    min-height: 100vh;
    padding-top: 80px;
}