/* ===========================
   Admin Panel — CSS
   =========================== */

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --admin-bg: #0f1117;
    --admin-surface: #161923;
    --admin-surface-2: #1c1f2e;
    --admin-surface-3: #232738;
    --admin-border: #2a2e3f;
    --admin-border-hover: #3d4259;
    --admin-text: #e4e6ef;
    --admin-text-secondary: #8b8fa7;
    --admin-text-muted: #565b73;
    --admin-primary: #6366f1;
    --admin-primary-hover: #818cf8;
    --admin-success: #10b981;
    --admin-warning: #f59e0b;
    --admin-danger: #ef4444;
    --admin-sidebar-w: 260px;
    --font-primary: 'Inter', 'Noto Sans KR', sans-serif;
    --radius: 10px;
    --radius-sm: 6px;
    --transition: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

html {
    font-size: 15px;
}

body {
    font-family: var(--font-primary);
    background: var(--admin-bg);
    color: var(--admin-text);
    display: flex;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
button { background: none; border: none; cursor: pointer; color: inherit; font-family: inherit; }
input, textarea { font-family: inherit; }

/* ===========================
   Sidebar
   =========================== */
.sidebar {
    width: var(--admin-sidebar-w);
    background: var(--admin-surface);
    border-right: 1px solid var(--admin-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform 0.3s var(--transition);
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 24px 20px;
    border-bottom: 1px solid var(--admin-border);
}

.sidebar-logo {
    width: 36px;
    height: 36px;
    object-fit: contain;
    filter: invert(1);
    flex-shrink: 0;
}

.sidebar-brand {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.brand-sub {
    font-size: 11px;
    color: var(--admin-text-muted);
    letter-spacing: 0.5px;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    color: var(--admin-text-secondary);
    transition: all 0.2s ease;
    width: 100%;
    text-align: left;
}

.sidebar-link:hover {
    background: var(--admin-surface-2);
    color: var(--admin-text);
}

.sidebar-link.active {
    background: var(--admin-primary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(99,102,241,0.3);
}

.sidebar-link.active svg {
    stroke: #fff;
}

.sidebar-footer {
    padding: 12px;
    border-top: 1px solid var(--admin-border);
}

.sidebar-back {
    color: var(--admin-text-muted);
}

.sidebar-back:hover {
    color: var(--admin-text);
    background: var(--admin-surface-2);
}

/* ===========================
   Main Content
   =========================== */
.main-content {
    flex: 1;
    margin-left: var(--admin-sidebar-w);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Top Bar */
.topbar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 32px;
    background: var(--admin-surface);
    border-bottom: 1px solid var(--admin-border);
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar-menu-btn {
    display: none;
    color: var(--admin-text-secondary);
    padding: 6px;
}

.topbar-title {
    font-size: 18px;
    font-weight: 700;
    flex: 1;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.admin-lang-tabs {
    display: flex;
    background: var(--admin-surface-2);
    border-radius: var(--radius-sm);
    padding: 4px;
    margin-right: 16px;
}

.lang-tab {
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 600;
    color: var(--admin-text-secondary);
    border-radius: 4px;
    transition: all 0.2s ease;
}

.lang-tab:hover {
    color: var(--admin-text);
}

.lang-tab.active {
    background: var(--admin-primary);
    color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* ===========================
   Buttons
   =========================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    transition: all 0.2s ease;
    letter-spacing: 0.3px;
}

.btn-primary {
    background: var(--admin-primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--admin-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(99,102,241,0.3);
}

.btn-secondary {
    background: var(--admin-surface-3);
    color: var(--admin-text);
    border: 1px solid var(--admin-border);
}

.btn-secondary:hover {
    border-color: var(--admin-border-hover);
    background: var(--admin-surface-2);
}

.btn-danger {
    background: transparent;
    color: var(--admin-danger);
    border: 1px solid rgba(239,68,68,0.3);
    padding: 8px 14px;
}

.btn-danger:hover {
    background: rgba(239,68,68,0.1);
    border-color: var(--admin-danger);
}

/* ===========================
   Content Sections
   =========================== */
.content-section {
    display: none;
    padding: 32px;
    flex: 1;
}

.content-section.active {
    display: block;
    animation: fadeIn 0.3s var(--transition);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.dash-card {
    background: var(--admin-surface);
    border: 1px solid var(--admin-border);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: border-color 0.2s ease;
}

.dash-card:hover {
    border-color: var(--admin-border-hover);
}

.dash-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.dash-card-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.dash-card-label {
    font-size: 12px;
    color: var(--admin-text-secondary);
    font-weight: 500;
}

.dash-card-value {
    font-size: 24px;
    font-weight: 800;
}

.dash-card-value-sm {
    font-size: 13px;
    font-weight: 500;
    color: var(--admin-text-secondary);
}

/* Section Card */
.section-card {
    background: var(--admin-surface);
    border: 1px solid var(--admin-border);
    border-radius: var(--radius);
    padding: 28px;
    margin-bottom: 24px;
}

.section-card-title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 6px;
}

.section-card-desc {
    font-size: 13px;
    color: var(--admin-text-secondary);
    margin-bottom: 28px;
    line-height: 1.6;
}

/* Guide List */
.guide-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.guide-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 16px;
    background: var(--admin-surface-2);
    border-radius: var(--radius-sm);
    border: 1px solid var(--admin-border);
    transition: border-color 0.2s ease;
}

.guide-item:hover {
    border-color: var(--admin-border-hover);
}

.guide-num {
    font-size: 12px;
    font-weight: 700;
    color: var(--admin-primary);
    background: rgba(99,102,241,0.1);
    padding: 4px 8px;
    border-radius: 4px;
    flex-shrink: 0;
    letter-spacing: 1px;
}

.guide-item strong {
    font-size: 14px;
    display: block;
    margin-bottom: 4px;
}

.guide-item p {
    font-size: 12px;
    color: var(--admin-text-secondary);
    line-height: 1.6;
}

/* ===========================
   Forms
   =========================== */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--admin-text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
}

.form-input {
    width: 100%;
    padding: 11px 14px;
    background: var(--admin-bg);
    border: 1px solid var(--admin-border);
    color: var(--admin-text);
    font-size: 14px;
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    resize: vertical;
}

.form-input:focus {
    border-color: var(--admin-primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

.form-input::placeholder {
    color: var(--admin-text-muted);
}

.form-hint {
    display: block;
    font-size: 11px;
    color: var(--admin-text-muted);
    margin-top: 6px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* Video Preview */
.video-preview {
    margin-top: 12px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--admin-bg);
    border: 1px solid var(--admin-border);
    aspect-ratio: 16/9;
    display: none;
    position: relative;
}

.video-preview.has-video {
    display: block;
}

.video-preview iframe {
    width: 100%;
    height: 100%;
    border: 0;
    position: absolute;
    top: 0;
    left: 0;
}

.video-preview video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    inset: 0;
}

.hero-video-upload-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-top: 12px;
}

.upload-status {
    color: var(--admin-text-muted);
    font-size: 12px;
    word-break: break-all;
}

.upload-progress {
    display: none;
    height: 6px;
    margin-top: 12px;
    overflow: hidden;
    border-radius: 999px;
    background: var(--admin-bg);
}

.upload-progress.active {
    display: block;
}

.upload-progress-bar {
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: var(--admin-primary);
    transition: width 0.2s ease;
}

/* Service Editor */
.service-editor {
    margin-bottom: 24px;
    padding: 20px;
    background: var(--admin-surface-2);
    border: 1px solid var(--admin-border);
    border-radius: var(--radius-sm);
}

.service-editor-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.service-editor-num {
    font-size: 11px;
    font-weight: 700;
    color: var(--admin-primary);
    background: rgba(99,102,241,0.1);
    padding: 4px 8px;
    border-radius: 4px;
    letter-spacing: 1px;
}

.service-editor-label {
    font-size: 14px;
    font-weight: 600;
}

/* Navigation Editor */
.nav-editor-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.nav-editor-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--admin-surface-2);
    border: 1px solid var(--admin-border);
    border-radius: var(--radius-sm);
    transition: border-color 0.2s ease;
}

.nav-editor-item:hover {
    border-color: var(--admin-border-hover);
}

.nav-editor-drag {
    cursor: grab;
    color: var(--admin-text-muted);
    flex-shrink: 0;
    padding: 4px;
}

.nav-editor-drag:active {
    cursor: grabbing;
}

.nav-editor-inputs {
    display: flex;
    gap: 12px;
    flex: 1;
}

.nav-editor-inputs input {
    flex: 1;
    padding: 8px 12px;
    background: var(--admin-bg);
    border: 1px solid var(--admin-border);
    color: var(--admin-text);
    font-size: 13px;
    border-radius: 4px;
    outline: none;
    transition: border-color 0.2s ease;
}

.nav-editor-inputs input:focus {
    border-color: var(--admin-primary);
}

.nav-editor-delete {
    color: var(--admin-text-muted);
    padding: 6px;
    border-radius: 4px;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.nav-editor-delete:hover {
    color: var(--admin-danger);
    background: rgba(239,68,68,0.1);
}

/* ===========================
   Toast Notification
   =========================== */
#toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 280px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.4);
    animation: toastIn 0.3s var(--transition);
    border: 1px solid transparent;
}

.toast.success {
    background: var(--admin-surface);
    color: var(--admin-success);
    border-color: rgba(16,185,129,0.3);
}

.toast.error {
    background: var(--admin-surface);
    color: var(--admin-danger);
    border-color: rgba(239,68,68,0.3);
}

.toast.removing {
    animation: toastOut 0.3s var(--transition) forwards;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateY(16px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toastOut {
    from { opacity: 1; transform: translateY(0) scale(1); }
    to { opacity: 0; transform: translateY(16px) scale(0.95); }
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 860px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
    .topbar-menu-btn {
        display: block;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .content-section {
        padding: 20px;
    }
    .topbar {
        padding: 16px 20px;
    }
    .nav-editor-inputs {
        flex-direction: column;
        gap: 8px;
    }
}

/* Mobile overlay when sidebar is open */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
}

.sidebar-overlay.active {
    display: block;
}

/* ===========================
   Login Screen
   =========================== */
.login-screen {
    position: fixed;
    inset: 0;
    background: var(--admin-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.login-card {
    background: var(--admin-surface);
    border: 1px solid var(--admin-border);
    border-radius: var(--radius);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    transition: transform 0.3s ease;
}

.login-card.shake {
    animation: shake 0.5s cubic-bezier(.36,.07,.19,.97) both;
}

@keyframes shake {
    10%, 90% { transform: translate3d(-1px, 0, 0); }
    20%, 80% { transform: translate3d(2px, 0, 0); }
    30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
    40%, 60% { transform: translate3d(4px, 0, 0); }
}

.login-logo {
    width: 48px;
    height: 48px;
    margin: 0 auto 24px;
}

.login-logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: invert(1);
}

.login-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-desc {
    font-size: 13px;
    color: var(--admin-text-secondary);
    margin-bottom: 32px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.login-field {
    text-align: left;
}

.login-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.login-input-wrap input {
    width: 100%;
    padding: 12px 40px 12px 16px;
    background: var(--admin-bg);
    border: 1px solid var(--admin-border);
    color: var(--admin-text);
    font-size: 14px;
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color 0.2s ease;
}

.login-input-wrap input:focus {
    border-color: var(--admin-primary);
}

.login-toggle-pw {
    position: absolute;
    right: 12px;
    color: var(--admin-text-muted);
    padding: 4px;
}

.login-toggle-pw:hover {
    color: var(--admin-text);
}

.login-error {
    display: block;
    color: var(--admin-danger);
    font-size: 12px;
    margin-top: 8px;
    min-height: 18px;
}

.login-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 12px;
    background: var(--admin-primary);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.login-btn:hover {
    background: var(--admin-primary-hover);
}

.login-back {
    display: inline-block;
    margin-top: 24px;
    font-size: 12px;
    color: var(--admin-text-muted);
    transition: color 0.2s ease;
}

.login-back:hover {
    color: var(--admin-text);
}

/* ===========================
   Inquiries
   =========================== */
.sidebar-badge {
    background: var(--admin-danger);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 10px;
    margin-left: auto;
}

.inquiries-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.inquiries-empty {
    color: var(--admin-text-secondary);
    font-size: 13px;
    text-align: center;
    padding: 40px 0;
}

.inquiry-item {
    background: var(--admin-surface-2);
    border: 1px solid var(--admin-border);
    border-radius: var(--radius-sm);
    padding: 20px;
    transition: border-color 0.2s ease;
}

.inquiry-item:hover {
    border-color: var(--admin-border-hover);
}

.inquiry-item.unread {
    border-left: 3px solid var(--admin-primary);
}

.inquiry-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.inquiry-meta {
    display: flex;
    align-items: center;
    gap: 12px;
}

.inquiry-new-badge {
    background: rgba(99,102,241,0.1);
    color: var(--admin-primary);
    font-size: 10px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
}

.inquiry-name {
    font-size: 14px;
    font-weight: 600;
}

.inquiry-email {
    font-size: 12px;
    color: var(--admin-text-secondary);
}

.inquiry-date {
    font-size: 12px;
    color: var(--admin-text-muted);
}

.inquiry-service {
    display: inline-block;
    font-size: 11px;
    color: var(--admin-text);
    background: var(--admin-bg);
    padding: 4px 8px;
    border-radius: 4px;
    margin-bottom: 12px;
    border: 1px solid var(--admin-border);
}

.inquiry-message {
    font-size: 13px;
    line-height: 1.6;
    color: var(--admin-text);
    margin-bottom: 16px;
    white-space: pre-wrap;
}

.inquiry-actions {
    display: flex;
    gap: 8px;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 11px;
}