/* =============================================
   SSO SKILL PREVIEWER - DESIGN SYSTEM v3
   Creative sidebar & skill grid improvements
   ============================================= */

/* CSS Variables / Design Tokens */
:root {
    /* Colors - Dark Fantasy Theme */
    --color-bg-primary: #0a0a12;
    --color-bg-secondary: #12121f;
    --color-bg-card: rgba(25, 25, 45, 0.8);
    --color-bg-card-hover: rgba(35, 35, 60, 0.9);

    /* Accent Colors */
    --color-accent-primary: #8b5cf6;
    --color-accent-secondary: #06b6d4;
    --color-accent-gold: #fbbf24;
    --color-accent-red: #ef4444;
    --color-accent-green: #22c55e;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #8b5cf6 100%);
    --gradient-gold: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
    --gradient-dark: linear-gradient(180deg, #0a0a12 0%, #1a1a2e 100%);

    /* Region Colors */
    --color-trung-nguyen: #3b82f6;
    --color-ta-phai: #dc2626;
    --gradient-trung-nguyen: linear-gradient(135deg, #1e40af 0%, #3b82f6 50%, #60a5fa 100%);
    --gradient-ta-phai: linear-gradient(135deg, #7f1d1d 0%, #dc2626 50%, #f87171 100%);

    /* Text Colors */
    --color-text-primary: #f8fafc;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;

    /* Borders */
    --color-border: rgba(148, 163, 184, 0.1);
    --color-border-hover: rgba(139, 92, 246, 0.5);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 30px rgba(139, 92, 246, 0.3);

    /* Typography */
    --font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Z-index */
    --z-sidebar: 150;
    --z-header: 100;
    --z-tooltip: 200;
    --z-modal: 250;

    /* Sidebar */
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 56px;
}

/* Icon Images (for URL-based icons) */
.icon-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    max-width: 64px;
    max-height: 64px;
}

/* =============================================
   BASE STYLES
   ============================================= */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    /* Hide scrollbar for IE/Edge and Firefox */
    -ms-overflow-style: none;
    scrollbar-width: none;
}

html::-webkit-scrollbar {
    display: none;
}

body {
    font-family: var(--font-family);
    background: var(--gradient-dark);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    /* Hide main scrollbar but keep scrolling enabled */
    -ms-overflow-style: none;
    scrollbar-width: none;
}

body::-webkit-scrollbar {
    display: none;
}

/* Background Pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(6, 182, 212, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* =============================================
   CUSTOM SCROLLBAR - Theme Consistent
   ============================================= */

/* Global Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(10, 10, 18, 0.8);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--color-accent-primary), var(--color-accent-secondary));
    border-radius: var(--radius-full);
    border: 2px solid rgba(10, 10, 18, 0.8);
    transition: all var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #a78bfa, #22d3ee);
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.5);
}

::-webkit-scrollbar-corner {
    background: transparent;
}

/* Firefox Scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--color-accent-primary) rgba(10, 10, 18, 0.8);
}

/* Thin Scrollbar for sidebar and modals */
.sidebar-content::-webkit-scrollbar,
.nav-section-content::-webkit-scrollbar,
.modal-body::-webkit-scrollbar,
.skill-grid-container::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

.sidebar-content::-webkit-scrollbar-thumb,
.nav-section-content::-webkit-scrollbar-thumb,
.modal-body::-webkit-scrollbar-thumb,
.skill-grid-container::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    border: none;
}

/* Skills table container scrollbar */
.skills-table-container::-webkit-scrollbar {
    height: 8px;
}

.skills-table-container::-webkit-scrollbar-thumb {
    background: var(--gradient-gold);
    border-radius: var(--radius-full);
}

.skills-table-container::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-full);
}

/* Career tree horizontal scrollbar */
.career-tree-wrapper::-webkit-scrollbar {
    height: 8px;
}

.career-tree-wrapper::-webkit-scrollbar-thumb {
    background: var(--gradient-secondary);
    border-radius: var(--radius-full);
}

.career-tree-wrapper::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-full);
}

/* =============================================
   HEADER
   ============================================= */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
    background: rgba(10, 10, 18, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-xl);
    padding-left: calc(var(--sidebar-collapsed-width) + var(--spacing-xl));
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: padding-left var(--transition-base);
}

body.sidebar-open .header-content {
    padding-left: calc(var(--sidebar-width) + var(--spacing-xl));
}

.logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    font-size: var(--font-size-2xl);
    -webkit-text-fill-color: initial;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.breadcrumb-item {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.05);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.breadcrumb-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-secondary);
}

.breadcrumb-item.active {
    background: var(--gradient-primary);
    color: white;
}

.breadcrumb-item.completed {
    background: rgba(34, 197, 94, 0.2);
    color: var(--color-accent-green);
}

.breadcrumb-separator {
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
}

/* =============================================
   CREATIVE SIDEBAR
   ============================================= */

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-collapsed-width);
    height: 100vh;
    background: linear-gradient(180deg, rgba(15, 15, 28, 0.98) 0%, rgba(10, 10, 20, 0.98) 100%);
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--color-border);
    z-index: var(--z-sidebar);
    transition: width var(--transition-base);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

body.sidebar-open .sidebar {
    width: var(--sidebar-width);
    box-shadow: var(--shadow-xl), 0 0 60px rgba(139, 92, 246, 0.1);
}

.sidebar-toggle {
    position: absolute;
    top: 12px;
    left: 12px;
    width: 32px;
    height: 32px;
    border: none;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    transition: all var(--transition-fast);
    z-index: 100;
}

.sidebar-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

body.sidebar-open .sidebar-toggle .toggle-icon {
    transform: rotate(90deg);
}

.toggle-icon {
    display: inline-block;
    transition: transform var(--transition-base);
}

.sidebar-content {
    flex: 1;
    padding-top: 56px;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
    overflow-y: auto;
    overflow-x: hidden;
}

body.sidebar-open .sidebar-content {
    opacity: 1;
    visibility: visible;
}

.sidebar-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.sidebar-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Language Selector */
.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
}

.language-selector {
    position: relative;
}

.language-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 6px 10px;
    border: 1px solid var(--color-border);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
}

.language-btn:hover {
    border-color: var(--color-accent-primary);
    background: rgba(139, 92, 246, 0.1);
}

.lang-flag {
    font-size: 1rem;
}

.lang-code {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 4px;
    min-width: 150px;
    background: rgba(20, 20, 35, 0.98);
    backdrop-filter: blur(12px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all 0.2s ease;
    z-index: 300;
    overflow: hidden;
}

.language-selector.open .language-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: background var(--transition-fast);
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-family: inherit;
    color: var(--color-text-primary);
}

.language-option:hover {
    background: rgba(139, 92, 246, 0.15);
}

.language-option.active {
    background: rgba(139, 92, 246, 0.2);
}

.language-option .lang-flag {
    font-size: 1.2rem;
}

.language-option .lang-name {
    flex: 1;
    font-size: var(--font-size-sm);
}

/* Navigation Sections */
.nav-section {
    border-bottom: 1px solid var(--color-border);
}

.nav-section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.nav-section-header:hover {
    background: rgba(139, 92, 246, 0.1);
}

.nav-section-icon {
    font-size: var(--font-size-xl);
}

.nav-section-title {
    flex: 1;
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.nav-section-value {
    font-size: var(--font-size-xs);
    color: var(--color-accent-secondary);
    background: rgba(6, 182, 212, 0.15);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nav-section-arrow {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    transition: transform var(--transition-fast);
}

.nav-section-content.collapsed+.nav-section-header .nav-section-arrow,
.nav-section-header:has(+ .nav-section-content.collapsed) .nav-section-arrow {
    transform: rotate(-90deg);
}

.nav-section-content {
    max-height: 300px;
    overflow-y: auto;
    overflow-x: hidden;
    transition: max-height var(--transition-base), padding var(--transition-base);
    padding: var(--spacing-sm) var(--spacing-md);
}

.nav-section-content.collapsed {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    overflow: hidden;
}

/* Navigation Items - Visual Cards */
.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav-item:hover {
    background: rgba(139, 92, 246, 0.15);
    border-color: var(--color-accent-primary);
    transform: translateX(4px);
}

.nav-item.selected {
    background: rgba(139, 92, 246, 0.2);
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 15px rgba(139, 92, 246, 0.2);
}

.nav-item.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.nav-item-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: var(--gradient-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.nav-item.trung-nguyen .nav-item-icon {
    background: var(--gradient-trung-nguyen);
}

.nav-item.ta-phai .nav-item-icon {
    background: var(--gradient-ta-phai);
}

.nav-item-info {
    flex: 1;
    min-width: 0;
}

.nav-item-name {
    font-size: var(--font-size-sm);
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-item-desc {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Current Path Display */
.nav-current-path {
    margin-top: auto;
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(0, 0, 0, 0.3);
    border-top: 1px solid var(--color-border);
}

.path-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-xs);
}

.path-value {
    font-size: var(--font-size-sm);
    color: var(--color-accent-gold);
    font-weight: 500;
}

/* =============================================
   PROGRESS BAR
   ============================================= */

.progress-container {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--color-border);
    z-index: calc(var(--z-header) - 1);
}

.progress-bar {
    height: 100%;
    width: 20%;
    background: var(--gradient-secondary);
    transition: width var(--transition-slow);
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.5);
}

/* =============================================
   MAIN CONTENT & SECTIONS
   ============================================= */

.main-content {
    padding-top: 80px;
    padding-left: var(--sidebar-collapsed-width);
    transition: padding-left var(--transition-base);
}

body.sidebar-open .main-content {
    padding-left: var(--sidebar-width);
}

.section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
    opacity: 1;
    transform: translateY(0);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.section.hidden {
    display: none;
}

.section-inner {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.step-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-lg);
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
}

/* =============================================
   REGION GRID (Step 1)
   ============================================= */

.region-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.region-card {
    position: relative;
    padding: var(--spacing-3xl) var(--spacing-xl);
    border-radius: var(--radius-2xl);
    background: var(--color-bg-card);
    border: 2px solid transparent;
    cursor: pointer;
    overflow: hidden;
    transition: all var(--transition-base);
    text-align: center;
}

.region-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.region-card.trung-nguyen::before {
    background: var(--gradient-trung-nguyen);
}

.region-card.ta-phai::before {
    background: var(--gradient-ta-phai);
}

.region-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.region-card:hover::before {
    opacity: 1;
}

.region-card.trung-nguyen:hover {
    border-color: var(--color-trung-nguyen);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(59, 130, 246, 0.3);
}

.region-card.ta-phai:hover {
    border-color: var(--color-ta-phai);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(220, 38, 38, 0.3);
}

.region-card.selected {
    transform: translateY(-8px);
}

.region-card.trung-nguyen.selected {
    border-color: var(--color-trung-nguyen);
    background: rgba(59, 130, 246, 0.1);
}

.region-card.ta-phai.selected {
    border-color: var(--color-ta-phai);
    background: rgba(220, 38, 38, 0.1);
}

.region-card.selected::before {
    opacity: 1;
}

.region-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    display: block;
}

.region-name {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.region-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* =============================================
   CLASS GRID (Step 2)
   ============================================= */

.class-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.class-card {
    position: relative;
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    cursor: pointer;
    text-align: center;
    transition: all var(--transition-base);
    overflow: hidden;
}

.class-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-fast);
    z-index: 0;
}

.class-card:hover {
    transform: translateY(-6px);
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.class-card:hover::after {
    opacity: 0.05;
}

.class-card.selected {
    border-color: var(--color-accent-primary);
    background: rgba(139, 92, 246, 0.1);
}

.class-card>* {
    position: relative;
    z-index: 1;
}

.class-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    border-radius: var(--radius-lg);
    background: var(--gradient-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.class-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.class-type {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* =============================================
   CAREER PATH LAYOUT TOGGLE
   ============================================= */

.career-layout-toggle {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.layout-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid var(--color-border);
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text-secondary);
    border-radius: var(--radius-full);
    font-family: inherit;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.layout-btn:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-text-primary);
}

.layout-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
}

/* =============================================
   CAREER TREE (Step 3)
   ============================================= */

.career-tree-wrapper {
    overflow-x: auto;
    padding: var(--spacing-xl) 0;
}

.career-tree-container {
    display: flex;
    justify-content: center;
    min-height: 400px;
    padding: 0 var(--spacing-2xl);
    /* Add side padding to prevent cut-off */
}

.career-tree-container.horizontal {
    justify-content: flex-start;
    /* Start from left to prevent cut-off on overflow */
    padding-left: 100px;
    /* Specific start padding for visual balance */
}

.career-tree-container.vertical {
    flex-direction: column;
    align-items: center;
}

.career-tree-container.horizontal {
    flex-direction: row;
    align-items: center;
    gap: 0;
}

.career-tree {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.career-tree-container.horizontal .career-tree {
    flex-direction: row;
    gap: var(--spacing-md);
}

.career-level {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    position: relative;
}

.career-tree-container.horizontal .career-level {
    flex-direction: column;
    gap: var(--spacing-lg);
}

.career-node {
    position: relative;
    padding: var(--spacing-lg) var(--spacing-xl);
    min-width: 160px;
    border-radius: var(--radius-xl);
    background: var(--color-bg-card);
    border: 2px solid var(--color-border);
    cursor: pointer;
    text-align: center;
    transition: all var(--transition-base);
    z-index: 2;
}

.career-node:hover {
    transform: scale(1.05);
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.career-node.selected {
    border-color: var(--color-accent-gold);
    background: rgba(251, 191, 36, 0.1);
    box-shadow: 0 0 30px rgba(251, 191, 36, 0.3);
}

.career-node.locked {
    opacity: 0.4;
    cursor: not-allowed;
    filter: grayscale(0.5);
}

.career-node.locked:hover {
    transform: none;
    border-color: var(--color-border);
    box-shadow: none;
}

.job-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--spacing-sm);
    border-radius: var(--radius-md);
    background: var(--gradient-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
}

.job-name {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.job-level-req {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* Career Tree SVG Connections */
.career-tree-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.tree-connection {
    stroke: var(--color-accent-primary);
    stroke-width: 2;
    fill: none;
    opacity: 0.6;
    stroke-dasharray: 8 4;
    animation: dash 1s linear infinite;
}

.tree-connection.active {
    stroke-width: 3;
    opacity: 1;
    stroke: var(--color-accent-gold);
    stroke-dasharray: none;
    filter: drop-shadow(0 0 6px rgba(251, 191, 36, 0.5));
}

@keyframes dash {
    to {
        stroke-dashoffset: -12;
    }
}

.tree-dot {
    fill: var(--color-accent-primary);
    opacity: 0.8;
}

.tree-dot.active {
    fill: var(--color-accent-gold);
    opacity: 1;
}

/* =============================================
   SKILLS TABLE (Step 4)
   ============================================= */

.skills-table-container {
    overflow-x: auto;
    overflow-y: auto;
    max-height: 500px;
    border-radius: var(--radius-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    scrollbar-width: thin;
    scrollbar-color: var(--color-accent-primary) transparent;
}

.skills-table-container::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.skills-table-container::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-full);
}

.skills-table-container::-webkit-scrollbar-thumb {
    background: var(--color-accent-primary);
    border-radius: var(--radius-full);
}

.skills-table-container::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent-secondary);
}

.skills-table {
    width: 100%;
    border-collapse: collapse;
}

.skills-table th {
    padding: var(--spacing-lg);
    text-align: left;
    font-weight: 600;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid var(--color-border);
}

.skills-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.skills-table tbody tr {
    cursor: pointer;
    transition: background var(--transition-fast);
}

.skills-table tbody tr:hover {
    background: rgba(139, 92, 246, 0.1);
}

.skills-table tbody tr.selected {
    background: rgba(139, 92, 246, 0.2);
}

.skills-table tbody tr:last-child td {
    border-bottom: none;
}

.skill-icon-cell {
    width: 60px;
}

.skill-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.skill-icon-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.skill-name {
    font-weight: 600;
    color: var(--color-text-primary);
}

.skill-level {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--gradient-gold);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: #000;
}

.skill-weapon {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.skill-type {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
}

.skill-type.active {
    background: rgba(239, 68, 68, 0.2);
    color: var(--color-accent-red);
}

.skill-type.passive {
    background: rgba(34, 197, 94, 0.2);
    color: var(--color-accent-green);
}

.skill-type.buff {
    background: rgba(6, 182, 212, 0.2);
    color: var(--color-accent-secondary);
}

.skill-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    max-width: 300px;
}

/* =============================================
   SKILL PREVIEW MODAL
   ============================================= */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

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

.modal-content {
    position: relative;
    width: 100%;
    max-width: 800px;
    max-height: 95vh;
    background: linear-gradient(180deg, #161625 0%, #0d0d18 100%);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-xl), 0 0 80px rgba(139, 92, 246, 0.15);
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-base);
    display: flex;
    flex-direction: column;
}

.modal-overlay.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    border: none;
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-primary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-lg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    z-index: 10;
}

.modal-close:hover {
    background: rgba(239, 68, 68, 0.3);
    transform: rotate(90deg);
}

.modal-body {
    flex: 1;
    overflow-y: auto;
}

.preview-media {
    position: relative;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, #1a1a2e 0%, #0a0a12 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.preview-media img,
.preview-media video {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.preview-placeholder {
    text-align: center;
    color: var(--color-text-muted);
    padding: var(--spacing-xl);
}

.preview-placeholder-icon {
    font-size: 5rem;
    display: block;
    margin-bottom: var(--spacing-md);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.preview-info {
    padding: var(--spacing-xl);
}

.preview-skill-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.preview-skill-icon {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-lg);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    flex-shrink: 0;
}

.preview-skill-title {
    flex: 1;
}

.preview-skill-name {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.preview-skill-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    flex-wrap: wrap;
}

.preview-skill-description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* Skill Icon Grid in Modal */
.modal-skill-grid {
    border-top: 1px solid var(--color-border);
    background: rgba(0, 0, 0, 0.3);
}

.skill-grid-header {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
}

.skill-grid-container {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    overflow-x: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--color-accent-primary) transparent;
}

.skill-grid-container::-webkit-scrollbar {
    height: 6px;
}

.skill-grid-container::-webkit-scrollbar-thumb {
    background: var(--color-accent-primary);
    border-radius: var(--radius-full);
}

.skill-grid-item {
    position: relative;
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    border: 2px solid transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.skill-grid-item:hover {
    transform: scale(1.15);
    border-color: var(--color-accent-secondary);
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.4);
    z-index: 5;
}

.skill-grid-item.active {
    border-color: var(--color-accent-gold);
    box-shadow: 0 0 20px rgba(251, 191, 36, 0.5);
}

.skill-grid-item.active::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    width: 8px;
    height: 8px;
    background: var(--color-accent-gold);
    border-radius: var(--radius-full);
}

/* Modal Navigation */
.modal-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-xl);
    background: rgba(0, 0, 0, 0.3);
    border-top: 1px solid var(--color-border);
}

.modal-nav-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid var(--color-border);
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text-primary);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-nav-btn:hover:not(:disabled) {
    background: var(--gradient-primary);
    border-color: transparent;
}

.modal-nav-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.modal-nav-indicator {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* =============================================
   SKILL TOOLTIP
   ============================================= */

.skill-tooltip {
    position: fixed;
    z-index: calc(var(--z-modal) + 100);
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(15, 15, 25, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 20px rgba(139, 92, 246, 0.15);
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
    max-width: 320px;
    min-width: 200px;
}

.skill-tooltip.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.tooltip-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.tooltip-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.tooltip-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.tooltip-name {
    font-weight: 700;
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
}

.tooltip-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    margin-bottom: var(--spacing-sm);
}

.tooltip-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
}

.tooltip-meta-item.level {
    background: rgba(251, 191, 36, 0.15);
    color: var(--color-accent-gold);
}

.tooltip-meta-item.active {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-accent-red);
}

.tooltip-meta-item.passive {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-accent-green);
}

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

/* =============================================
   FOOTER
   ============================================= */

.footer {
    text-align: center;
    padding: var(--spacing-xl);
    padding-left: var(--sidebar-collapsed-width);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    border-top: 1px solid var(--color-border);
    transition: padding-left var(--transition-base);
}

body.sidebar-open .footer {
    padding-left: var(--sidebar-width);
}

/* =============================================
   UTILITIES & ANIMATIONS
   ============================================= */

.hidden {
    display: none !important;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* =============================================
   RESPONSIVE DESIGN
   ============================================= */

@media (max-width: 1024px) {
    body.sidebar-open .sidebar {
        box-shadow: var(--shadow-xl);
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
        padding-left: calc(var(--sidebar-collapsed-width) + var(--spacing-md));
    }

    .region-grid {
        grid-template-columns: 1fr;
    }

    .section {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    .skills-table th,
    .skills-table td {
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }

    .skill-description {
        display: none;
    }

    .breadcrumb {
        justify-content: center;
    }

    .main-content {
        padding-left: var(--sidebar-collapsed-width);
    }

    body.sidebar-open .main-content {
        padding-left: var(--sidebar-collapsed-width);
    }

    .modal-content {
        max-width: 95%;
        max-height: 95vh;
    }

    .preview-skill-header {
        flex-direction: column;
        text-align: center;
    }

    .preview-skill-meta {
        justify-content: center;
    }

    .skill-grid-item {
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .class-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-md);
    }

    .class-card {
        padding: var(--spacing-md);
    }

    .class-icon {
        width: 60px;
        height: 60px;
        font-size: 1.8rem;
    }

    .career-node {
        min-width: 130px;
        padding: var(--spacing-md);
    }

    .modal-nav {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        justify-content: center;
    }
}

/* =============================================
   TRANSLATION HIGHLIGHT (For Translation Editor)
   ============================================= */

.translation-highlight {
    position: relative;
    animation: translationPulse 1.5s ease-in-out infinite;
    box-shadow: 0 0 0 3px #ec4899, 0 0 30px rgba(236, 72, 153, 0.5) !important;
    z-index: 100;
}

.translation-highlight::after {
    content: '📍 Đang dịch';
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    background: #ec4899;
    color: white;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
    z-index: 1000;
    pointer-events: none;
}

@keyframes translationPulse {

    0%,
    100% {
        box-shadow: 0 0 0 3px #ec4899, 0 0 30px rgba(236, 72, 153, 0.5);
    }

    50% {
        box-shadow: 0 0 0 5px #ec4899, 0 0 50px rgba(236, 72, 153, 0.7);
    }
}

/* Skill row highlight */
#skillsTableBody tr.translation-highlight {
    background: rgba(236, 72, 153, 0.2) !important;
}

#skillsTableBody tr.translation-highlight::after {
    top: 50%;
    left: -60px;
    transform: translateY(-50%);
}