/* VS Code Dark Theme Variables */
:root {
    --bg-primary: #1e1e1e;
    --bg-secondary: #252526;
    --bg-tertiary: #2d2d30;
    --bg-hover: #2a2d2e;
    --border-color: #3e3e42;
    --text-primary: #cccccc;
    --text-secondary: #969696;
    --text-accent: #569cd6;
    --accent-blue: #007acc;
    --accent-green: #4ec9b0;
    --accent-orange: #ce9178;
    --accent-yellow: #dcdcaa;
    --tab-active: #1e1e1e;
    --tab-inactive: #2d2d30;
    --scrollbar-bg: #1e1e1e;
    --scrollbar-thumb: #424242;
    --success-color: #4ec9b0;
    --error-color: #f48771;
    --warning-color: #ffcc02;
}

/* VS Code Light Theme Variables */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f3f3f3;
    --bg-tertiary: #e8e8e8;
    --bg-hover: #e0e0e0;
    --border-color: #d4d4d4;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-accent: #0066cc;
    --accent-blue: #005a9e;
    --accent-green: #008060;
    --accent-orange: #a65e2b;
    --accent-yellow: #b8860b;
    --tab-active: #ffffff;
    --tab-inactive: #e8e8e8;
    --scrollbar-bg: #ffffff;
    --scrollbar-thumb: #cccccc;
    --success-color: #008060;
    --error-color: #d73a49;
    --warning-color: #e36209;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Enhanced Animations & Keyframes */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 122, 204, 0.3); }
    50% { box-shadow: 0 0 30px rgba(0, 122, 204, 0.6); }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

body {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow: hidden;
    height: 100vh;
    margin: 0;
    padding: 0;
    padding-bottom: env(safe-area-inset-bottom);
    -webkit-overflow-scrolling: touch;
}

/* Loading Screen Styles */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: fadeOut 0.5s ease forwards;
    animation-delay: 4s;
}

@keyframes fadeOut {
    to {
        opacity: 0;
        visibility: hidden;
    }
}

.terminal-window {
    width: 600px;
    max-width: 90vw;
    background-color: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    animation: terminalSlideIn 0.8s ease;
}

@keyframes terminalSlideIn {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.terminal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    border-radius: 8px 8px 0 0;
}

.terminal-controls {
    display: flex;
    gap: 8px;
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    cursor: pointer;
}

.control.close {
    background-color: #ff5f57;
}

.control.minimize {
    background-color: #ffbd2e;
}

.control.maximize {
    background-color: #28ca42;
}

.terminal-title {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.terminal-body {
    padding: 20px;
    min-height: 200px;
}

.terminal-line {
    display: flex;
    align-items: center;
    margin-bottom: 16px;
}

.prompt {
    color: var(--accent-green);
    font-weight: bold;
    margin-right: 4px;
}

.command {
    color: var(--text-primary);
    font-family: inherit;
}

.cursor {
    color: var(--accent-blue);
    animation: blink 1s infinite;
    margin-left: 2px;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.terminal-output {
    margin-bottom: 20px;
    line-height: 1.4;
}

.terminal-output div {
    margin-bottom: 4px;
    color: var(--text-secondary);
    font-size: 13px;
}

.loading-progress {
    width: 100%;
    height: 4px;
    background-color: var(--bg-primary);
    border-radius: 2px;
    overflow: hidden;
    margin-top: 16px;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
    width: 0%;
    border-radius: 2px;
    animation: progressAnimation 3s ease-in-out forwards;
}

@keyframes progressAnimation {
    0% { width: 0%; }
    20% { width: 15%; }
    40% { width: 35%; }
    60% { width: 60%; }
    80% { width: 85%; }
    100% { width: 100%; }
}

/* VS Code Container */
.vscode-container {
    display: flex;
    height: 100vh;
    width: 100vw;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
}

.vscode-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(0, 122, 204, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(78, 201, 176, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* Sidebar Styles */
.sidebar {
    width: 300px;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 1;
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.1);
}

.explorer-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-tertiary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.explorer-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.theme-toggle::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.theme-toggle:hover::before {
    left: 100%;
}

.theme-toggle:hover {
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-green) 100%);
    border-color: var(--accent-blue);
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 4px 16px rgba(0, 122, 204, 0.3);
}

.theme-toggle i {
    font-size: 16px;
    color: var(--accent-blue);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    filter: drop-shadow(0 0 4px rgba(0, 122, 204, 0.3));
}

.theme-toggle:hover i {
    transform: rotate(15deg) scale(1.1);
    color: #ffffff;
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.5));
}

.theme-toggle.switching {
    animation: themeSwitchButton 0.8s ease;
}

.theme-toggle.switching i {
    animation: themeSwitchIcon 0.8s ease;
}

@keyframes themeSwitchButton {
    0% {
        transform: scale(1) rotate(0deg);
        background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    }
    25% {
        transform: scale(1.2) rotate(90deg);
        background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-orange) 100%);
    }
    50% {
        transform: scale(0.9) rotate(180deg);
        background: linear-gradient(135deg, var(--accent-orange) 0%, var(--accent-yellow) 100%);
    }
    75% {
        transform: scale(1.1) rotate(270deg);
        background: linear-gradient(135deg, var(--accent-yellow) 0%, var(--accent-green) 100%);
    }
    100% {
        transform: scale(1) rotate(360deg);
        background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    }
}

@keyframes themeSwitchIcon {
    0% {
        transform: rotate(0deg) scale(1);
        color: var(--accent-blue);
        filter: drop-shadow(0 0 4px rgba(0, 122, 204, 0.3));
    }
    25% {
        transform: rotate(-90deg) scale(1.3);
        color: var(--accent-orange);
        filter: drop-shadow(0 0 8px rgba(206, 145, 120, 0.6));
    }
    50% {
        transform: rotate(-180deg) scale(0.8);
        color: var(--accent-yellow);
        filter: drop-shadow(0 0 12px rgba(220, 220, 170, 0.8));
    }
    75% {
        transform: rotate(-270deg) scale(1.2);
        color: var(--accent-green);
        filter: drop-shadow(0 0 8px rgba(78, 201, 176, 0.6));
    }
    100% {
        transform: rotate(-360deg) scale(1);
        color: var(--accent-blue);
        filter: drop-shadow(0 0 4px rgba(0, 122, 204, 0.3));
    }
}

/* Light theme specific styling */
[data-theme="light"] .theme-toggle {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .theme-toggle i {
    color: var(--accent-orange);
    filter: drop-shadow(0 0 4px rgba(166, 94, 43, 0.4));
}

[data-theme="light"] .theme-toggle:hover {
    background: linear-gradient(135deg, var(--accent-orange) 0%, var(--accent-blue) 100%);
}

[data-theme="light"] .theme-toggle:hover i {
    color: #ffffff;
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.7));
}

.explorer-title i {
    color: var(--accent-blue);
}

.file-tree {
    padding: 8px 0;
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}

.folder-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
}

.folder-item i {
    color: var(--accent-blue);
}

.folder-avatar {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--accent-blue);
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 122, 204, 0.2);
    animation: pulse 3s ease-in-out infinite;
}

.file-list {
    margin-left: 24px;
    margin-top: 4px;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    font-size: 13px;
    cursor: pointer;
    transition: background-color 0.2s ease;
    border-radius: 4px;
    margin: 1px 8px;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    min-height: 44px;
}

.file-item:hover {
    background-color: var(--bg-hover);
    transform: translateX(4px);
    box-shadow: 0 2px 12px rgba(0, 122, 204, 0.2);
}

.file-item.active {
    background-color: var(--accent-blue);
    color: #ffffff;
}

.file-icon {
    font-size: 14px;
    width: 16px;
    text-align: center;
}

/* File type colors */
.file-item[data-tab="about"] .file-icon { color: var(--accent-green); }
.file-item[data-tab="experience"] .file-icon { color: var(--accent-orange); }
.file-item[data-tab="skills"] .file-icon { color: var(--accent-yellow); }
.file-item[data-tab="projects"] .file-icon { color: var(--accent-purple); }
.file-item[data-tab="education"] .file-icon { color: var(--accent-green); }
.file-item[data-tab="contact"] .file-icon { color: var(--accent-orange); }

/* Main Content Area */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    z-index: 1;
    background: linear-gradient(135deg, var(--bg-primary) 0%, rgba(30, 30, 30, 0.95) 100%);
}

/* Tab Bar */
.tab-bar {
    display: flex;
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.tab-bar::-webkit-scrollbar {
    display: none;
}

.tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    font-size: 13px;
    background-color: var(--tab-inactive);
    border-right: 1px solid var(--border-color);
    cursor: grab;
    min-width: fit-content;
    white-space: nowrap;
    transition: background-color 0.2s ease, transform 0.2s ease;
    position: relative;
    user-select: none;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.tab:active {
    cursor: grabbing;
}

.tab.dragging {
    opacity: 0.5;
    transform: rotate(5deg);
    z-index: 1000;
}

.tab.drag-over {
    border-left: 3px solid var(--accent-blue);
}

.tab:hover {
    background-color: var(--bg-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 122, 204, 0.15);
}

.tab.active {
    background-color: var(--tab-active);
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: 0 2px 12px rgba(0, 122, 204, 0.25);
}

.tab i {
    font-size: 14px;
}

.tab-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 16px;
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 2px;
    margin-left: 8px;
    line-height: 1;
    transition: all 0.2s ease;
}

.tab-close:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

/* Editor Content */
.editor-content {
    flex: 1;
    overflow-y: auto;
    background-color: var(--bg-primary);
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
    padding: 0;
    margin: 0;
}

.tab-content {
    display: none;
    padding: 12px;
    max-width: 1200px;
    margin: 0 auto;
    animation: slideInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    height: 100%;
    box-sizing: border-box;
    position: relative;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Content Headers */
.content-header {
    margin-bottom: 32px;
}

.content-header h1 {
    font-size: 28px;
    color: var(--text-primary);
    margin-bottom: 16px;
    font-weight: 600;
}

.profile-section {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-bottom: 24px;
}

.profile-image {
    font-size: 80px;
    color: var(--accent-blue);
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-photo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--accent-blue);
    box-shadow: 0 4px 16px rgba(0, 122, 204, 0.3);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    animation: float 6s ease-in-out infinite;
    position: relative;
    overflow: hidden;
}

.profile-photo:hover {
    transform: scale(1.08) rotate(2deg);
    box-shadow: 0 8px 32px rgba(0, 122, 204, 0.6);
    animation: glow 2s ease-in-out infinite;
}

.profile-info h1 {
    font-size: 32px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.profile-info h2 {
    font-size: 20px;
    color: var(--accent-blue);
    margin-bottom: 12px;
    font-weight: 500;
}

.location {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

.location i {
    color: var(--accent-orange);
}

/* Content Sections */
section {
    margin-bottom: 32px;
}

section h3 {
    font-size: 20px;
    color: var(--accent-blue);
    margin-bottom: 16px;
    font-weight: 600;
}

section p {
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.7;
}

section ul {
    list-style: none;
    padding-left: 0;
}

section li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    color: var(--text-primary);
    line-height: 1.6;
}

section li::before {
    content: "▶";
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    font-size: 12px;
}

/* Role Card */
.role-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-top: 16px;
}

.role-card h4 {
    color: var(--accent-green);
    font-size: 18px;
    margin-bottom: 8px;
}

.duration {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 12px;
}

/* Experience Timeline */
.experience-timeline {
    display: flex;
    flex-direction: column;
    gap: 32px;
    scroll-snap-type: y proximity;
}

.experience-item {
    display: flex;
    gap: 24px;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
    scroll-snap-align: start;
    animation: slideInLeft 0.6s ease;
    animation-delay: calc(var(--index, 0) * 0.2s);
    transition: all 0.3s ease;
    position: relative;
    padding: 20px;
    border-radius: 8px;
    background: linear-gradient(135deg, transparent 0%, rgba(0, 122, 204, 0.02) 100%);
}

.experience-item:hover {
    background: linear-gradient(135deg, rgba(0, 122, 204, 0.05) 0%, rgba(78, 201, 176, 0.03) 100%);
    transform: translateX(8px);
    box-shadow: 0 8px 24px rgba(0, 122, 204, 0.1);
    border-left: 3px solid var(--accent-blue);
    margin-left: -3px;
}

.experience-period {
    min-width: 140px;
    font-size: 14px;
    color: var(--accent-orange);
    font-weight: 600;
    padding-top: 4px;
}

.experience-details {
    flex: 1;
}

.experience-details h3 {
    color: var(--accent-green);
    font-size: 18px;
    margin-bottom: 4px;
}

.experience-details h4 {
    color: var(--accent-blue);
    font-size: 16px;
    margin-bottom: 12px;
    font-weight: 500;
}

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.skill-category {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
}

.skill-category h3 {
    color: var(--accent-yellow);
    font-size: 16px;
    margin-bottom: 16px;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tag {
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: 16px;
    font-size: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.skill-tag:hover {
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-green) 100%);
    color: #ffffff;
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 20px rgba(0, 122, 204, 0.4);
    border-color: var(--accent-blue);
}

.skill-tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.skill-tag:hover::before {
    left: 100%;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.project-card {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    animation: slideInUp 0.6s ease;
    animation-delay: calc(var(--index, 0) * 0.1s);
}

.project-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: var(--accent-purple);
    box-shadow: 0 16px 40px rgba(139, 69, 255, 0.2);
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 80% 20%, rgba(0, 122, 204, 0.05) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: -1;
}

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

.project-card h3 {
    color: var(--accent-green);
    font-size: 18px;
    margin-bottom: 8px;
}

.project-type {
    color: var(--accent-orange);
    font-size: 14px;
    margin-bottom: 12px;
    font-weight: 600;
}

.project-card p {
    margin-bottom: 16px;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tech-tag {
    background-color: var(--bg-tertiary);
    color: var(--accent-purple);
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 11px;
    border: 1px solid var(--accent-purple);
}

/* Education Timeline */
.education-timeline {
    margin-bottom: 32px;
}

.education-item {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.education-period {
    min-width: 120px;
    font-size: 14px;
    color: var(--accent-orange);
    font-weight: 600;
    padding-top: 4px;
}

.education-details h3 {
    color: var(--accent-green);
    font-size: 18px;
    margin-bottom: 4px;
}

.education-details h4 {
    color: var(--accent-blue);
    font-size: 16px;
    margin-bottom: 8px;
    font-weight: 500;
}

/* Languages Section */
.languages-section {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-top: 32px;
}

.language-skills {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.language-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
}

.language-name {
    font-size: 16px;
    color: var(--text-primary);
    font-weight: 500;
}

.language-level {
    display: flex;
    align-items: center;
    gap: 8px;
}

.level-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.level-indicator.native {
    background-color: var(--success-color);
}

.level-indicator.professional {
    background-color: var(--accent-blue);
}

/* Contact Grid */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.contact-card {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    animation: slideInLeft 0.6s ease;
    animation-delay: calc(var(--index, 0) * 0.1s);
}

.contact-card:hover {
    transform: translateY(-6px) rotate(1deg);
    border-color: var(--accent-blue);
    box-shadow: 0 12px 32px rgba(0, 122, 204, 0.25);
}

.contact-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(from 0deg, transparent, rgba(0, 122, 204, 0.1), transparent);
    animation: spin 8s linear infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: -1;
}

.contact-card:hover::after {
    opacity: 1;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.contact-icon {
    font-size: 32px;
    color: var(--accent-blue);
    margin-bottom: 16px;
}

.contact-info h3 {
    color: var(--accent-green);
    font-size: 16px;
    margin-bottom: 8px;
}

.contact-info p {
    color: var(--text-primary);
    font-size: 14px;
    margin-bottom: 16px;
}

.contact-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    position: relative;
    z-index: 5;
}

.contact-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    min-height: 44px;
    justify-content: center;
    position: relative;
    z-index: 10;
    pointer-events: auto;
}

.contact-btn.primary {
    background-color: var(--accent-blue);
    color: #ffffff;
}

.contact-btn.primary:hover {
    background: linear-gradient(135deg, #005a9e 0%, var(--accent-green) 100%);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 20px rgba(0, 122, 204, 0.4);
}

.contact-btn.secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.contact-btn.secondary:hover {
    background: linear-gradient(135deg, var(--bg-hover) 0%, var(--bg-tertiary) 100%);
    color: var(--text-primary);
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 4px 16px rgba(0, 122, 204, 0.2);
}

/* Availability Section */
.availability-section {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
}

.availability-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.status-indicator {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    margin-top: 4px;
    flex-shrink: 0;
}

.status-indicator.available {
    background-color: var(--success-color);
    box-shadow: 0 0 8px var(--success-color);
}

.availability-info h4 {
    color: var(--accent-green);
    font-size: 18px;
    margin-bottom: 8px;
}

.availability-info p {
    color: var(--text-primary);
    line-height: 1.6;
}

/* Scrollbar Styling - Mobile First */
::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: var(--scrollbar-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 2px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* Desktop scrollbar */
@media (min-width: 768px) {
    ::-webkit-scrollbar {
        width: 8px;
    }

    ::-webkit-scrollbar-thumb {
        border-radius: 4px;
    }
}

@media (min-width: 1024px) {
    ::-webkit-scrollbar {
        width: 12px;
    }

    ::-webkit-scrollbar-thumb {
        border-radius: 6px;
    }
}

/* Hide Keyboard Shortcuts on Mobile */
@media (max-width: 767px) {
    /* Hide the entire keyboard shortcuts section */
    .welcome-section:has(h3:contains("Keyboard Shortcuts")) {
        display: none;
    }

    /* Fallback approach - hide by targeting the shortcuts content */
    .welcome-section h3 + .shortcuts-grid,
    .welcome-section .shortcuts-grid {
        display: none;
    }

    /* Hide the section containing shortcuts-grid */
    .shortcuts-grid,
    .shortcut-item {
        display: none !important;
    }

    /* Additional fallback - hide the second welcome-section which contains shortcuts */
    .welcome-content .welcome-section:nth-child(2) {
        display: none;
    }
}

/* Responsive Design */
@media (max-width: 1199px) {
    .sidebar {
        width: 250px;
    }
}

@media (max-width: 991px) {
    .vscode-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .file-tree {
        max-height: 200px;
    }

    .file-list {
        display: flex;
        overflow-x: auto;
        margin-left: 0;
        margin-top: 8px;
        padding: 0 8px;
        gap: 4px;
    }

    .file-item {
        min-width: fit-content;
        margin: 0;
        white-space: nowrap;
    }
}

@media (max-width: 767px) {
    body {
        overflow-x: hidden;
    }

    .tab-content {
        padding: 16px 16px 100px 16px;
        margin: 8px 8px 0 8px;
        max-width: calc(100% - 16px);
        width: calc(100% - 16px);
    }

    .profile-section {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }

    .profile-image {
        font-size: 60px;
    }

    .profile-photo {
        width: 100px;
        height: 100px;
    }

    .profile-info h1 {
        font-size: 24px;
    }

    .profile-info h2 {
        font-size: 18px;
    }

    .experience-item {
        flex-direction: column;
        gap: 8px;
        margin-left: 8px;
        margin-right: 8px;
        padding-left: 8px;
        padding-right: 8px;
    }

    .experience-period {
        min-width: auto;
        font-size: 12px;
    }

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

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

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

    .contact-actions {
        flex-direction: column;
    }

    .contact-btn {
        justify-content: center;
    }

    .language-skills {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 575px) {
    .tab {
        padding: 6px 8px;
        font-size: 12px;
        min-height: 40px;
        touch-action: manipulation;
    }

    .content-header h1 {
        font-size: 20px;
        margin-bottom: 8px;
    }

    section h3 {
        font-size: 16px;
        margin-bottom: 12px;
    }

    .tab-content {
        padding: 12px 12px 120px 12px;
        margin: 6px 6px 0 6px;
    }

    .project-card,
    .contact-card,
    .skill-category,
    .role-card,
    .availability-section,
    .languages-section {
        padding: 12px;
        margin-bottom: 8px;
    }

    /* Extra margin for last elements on smallest screens */
    .project-card:last-child,
    .contact-card:last-child,
    .skill-category:last-child,
    .role-card:last-child,
    .availability-section:last-child,
    .languages-section:last-child,
    section:last-child {
        margin-bottom: 50px;
    }

    .explorer-header {
        padding: 6px 8px;
    }

    .sidebar {
        padding: 0;
        margin: 0;
    }

    .file-item {
        padding: 8px 12px;
        margin: 1px 4px;
        touch-action: manipulation;
    }

    .tab-bar {
        padding: 0;
        margin: 0;
        -webkit-overflow-scrolling: touch;
        scroll-behavior: smooth;
    }
}

/* Welcome Page Styles */
.welcome-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
    text-align: center;
}

.welcome-header {
    margin-bottom: 48px;
}

.welcome-logo {
    font-size: 80px;
    color: var(--accent-blue);
    margin-bottom: 24px;
}

.welcome-header h1 {
    font-size: 32px;
    color: var(--text-primary);
    margin-bottom: 12px;
    font-weight: 600;
}

.welcome-subtitle {
    font-size: 18px;
    color: var(--accent-green);
    margin-bottom: 0;
}

.welcome-content {
    text-align: left;
}

.welcome-section {
    margin-bottom: 40px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
}

.welcome-section h3 {
    color: var(--accent-blue);
    font-size: 20px;
    margin-bottom: 16px;
    text-align: center;
}

.welcome-section p {
    color: var(--text-primary);
    margin-bottom: 20px;
    text-align: center;
}

.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-top: 20px;
}

.welcome-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    min-height: 44px;
    justify-content: center;
}

.welcome-btn:hover {
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-green) 100%);
    color: #ffffff;
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 24px rgba(0, 122, 204, 0.4);
}

.welcome-btn:active {
    transform: translateY(-2px) scale(1.02);
}

.welcome-btn i {
    font-size: 16px;
}

.shortcuts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.shortcut-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

.shortcut-item kbd {
    background-color: var(--bg-primary);
    color: var(--accent-orange);
    padding: 4px 8px;
    border-radius: 4px;
    font-family: inherit;
    font-size: 12px;
    border: 1px solid var(--border-color);
}

.shortcut-item span {
    color: var(--text-secondary);
    font-size: 13px;
}

.facts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-top: 16px;
}

.fact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

.fact-item i {
    font-size: 24px;
    color: var(--accent-blue);
    flex-shrink: 0;
}

.fact-item div {
    display: flex;
    flex-direction: column;
}

.fact-item strong {
    color: var(--text-primary);
    font-size: 16px;
    margin-bottom: 4px;
}

.fact-item span {
    color: var(--text-secondary);
    font-size: 12px;
}

/* Print Styles */
@media print {
    body {
        background: white;
        color: black;
    }

    .sidebar {
        display: none;
    }

    .tab-bar {
        display: none;
    }

    .tab-content {
        display: block !important;
        padding: 20px;
        page-break-inside: avoid;
    }

    .contact-btn,
    .tab-close {
        display: none;
    }

    .loading-screen {
        display: none;
    }
}

/* Mobile Scrolling Enhancements */
@media (max-width: 767px) {
    * {
        -webkit-overflow-scrolling: touch;
        scroll-behavior: smooth;
    }

    .editor-content {
        overflow-x: hidden;
        overflow-y: auto;
        scroll-snap-type: y proximity;
        scroll-padding-top: 20px;
    }

    .tab-content {
        scroll-snap-align: start;
        overflow-y: auto;
        max-height: calc(100vh - 60px - env(safe-area-inset-bottom));
        scroll-padding: 20px;
        padding-bottom: max(100px, env(safe-area-inset-bottom) + 80px);
        overscroll-behavior: contain;
    }

    .skills-grid,
    .projects-grid,
    .contact-grid {
        scroll-snap-type: y mandatory;
    }

    .skill-category,
    .project-card,
    .contact-card {
        scroll-snap-align: start;
    }

    /* Prevent horizontal scroll on mobile */
    html, body {
        overflow-x: hidden;
        width: 100%;
        max-width: 100%;
    }

    .vscode-container {
        width: 100%;
        max-width: 100vw;
        overflow-x: hidden;
    }

    .sidebar {
        width: 100%;
        max-width: 100%;
        overflow-x: hidden;
    }

    .main-content {
        width: 100%;
        max-width: 100%;
        overflow-x: hidden;
    }

    .tab-bar {
        width: 100%;
        max-width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scroll-behavior: smooth;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    .tab-bar::-webkit-scrollbar {
        display: none;
    }

    /* Enhanced mobile spacing and padding */
    section {
        margin-bottom: 24px;
        padding: 8px 4px;
    }

    /* Extra margin for last sections and elements */
    section:last-child,
    .project-card:last-child,
    .contact-card:last-child,
    .skill-category:last-child,
    .role-card:last-child,
    .availability-section:last-child,
    .languages-section:last-child {
        margin-bottom: 40px;
    }

    .profile-section {
        gap: 12px;
        padding: 8px;
        margin-bottom: 16px;
    }

    .experience-item {
        padding-bottom: 16px;
        margin-bottom: 16px;
        gap: 12px;
        margin-left: 8px;
        margin-right: 8px;
        padding-left: 8px;
        padding-right: 8px;
        scroll-snap-align: start;
        scroll-margin-top: 20px;
    }

    .education-item {
        padding-bottom: 12px;
        margin-bottom: 16px;
        gap: 12px;
    }

    .content-header {
        margin-bottom: 16px;
        padding: 0 4px;
    }

    /* Mobile-specific margin and padding for cards */
    .stat-card,
    .expertise-item,
    .nav-card {
        margin-bottom: 8px;
        padding: 12px;
    }

    .overview-stats {
        gap: 8px;
        margin-bottom: 16px;
        padding: 0 4px;
    }

    .overview-content {
        gap: 12px;
        padding: 0 4px;
    }

    .overview-summary,
    .overview-expertise,
    .overview-recent,
    .overview-navigation {
        padding: 12px;
        margin-bottom: 8px;
    }

    /* Improve spacing for touch targets */
    .skill-tag {
        padding: 8px 12px;
        margin: 2px;
        min-height: 32px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .tech-tag {
        padding: 6px 10px;
        margin: 2px;
        min-height: 28px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* Better spacing for mobile lists */
    .overview-recent li {
        padding: 12px 16px;
        margin-bottom: 6px;
    }

    .language-item {
        padding: 12px 8px;
        margin-bottom: 4px;
    }

    /* Ensure adequate spacing between grid items */
    .skills-grid,
    .projects-grid,
    .contact-grid,
    .expertise-grid,
    .navigation-grid {
        gap: 8px;
        padding: 0 4px;
    }
}

/* Overview Section Enhanced Styles - Mobile First */
.overview-header {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    animation: slideInUp 0.6s ease;
    box-shadow: 0 8px 32px rgba(0, 122, 204, 0.1);
}

.overview-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-green), var(--accent-orange));
    animation: shimmer 3s linear infinite;
    background-size: 200% 100%;
}

.overview-header::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 70% 30%, rgba(0, 122, 204, 0.08) 0%, transparent 60%);
    pointer-events: none;
}

.overview-title {
    text-align: center;
}

.overview-title h1 {
    font-size: 24px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.overview-subtitle {
    font-size: 14px;
    color: var(--accent-green);
    font-weight: 500;
    opacity: 0.9;
    line-height: 1.4;
}

/* Overview Stats Cards - Mobile First */
.overview-stats {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    margin-bottom: 24px;
}

.stat-card {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    min-height: 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    animation: slideInUp 0.6s ease;
    animation-delay: calc(var(--index, 0) * 0.1s);
    cursor: pointer;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-blue);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    transform-origin: left;
}

.stat-card:hover {
    transform: translateY(-8px) scale(1.05);
    border-color: var(--accent-blue);
    box-shadow: 0 16px 48px rgba(0, 122, 204, 0.25);
}

.stat-card:hover .stat-icon {
    animation: pulse 1s ease-in-out infinite;
    transform: scale(1.2);
}

.stat-card:active {
    transform: translateY(-4px) scale(1.02);
}

.stat-card:hover::before {
    transform: scaleX(1);
}

.stat-card:nth-child(2)::before {
    background: var(--accent-green);
}

.stat-card:nth-child(3)::before {
    background: var(--accent-orange);
}

.stat-card:nth-child(4)::before {
    background: var(--accent-yellow);
}

.stat-icon {
    font-size: 24px;
    margin-bottom: 8px;
    color: var(--accent-blue);
    transition: color 0.3s ease;
}

.stat-card:nth-child(2) .stat-icon {
    color: var(--accent-green);
}

.stat-card:nth-child(3) .stat-icon {
    color: var(--accent-orange);
}

.stat-card:nth-child(4) .stat-icon {
    color: var(--accent-yellow);
}

.stat-info h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
    line-height: 1;
}

.stat-info p {
    font-size: 12px;
    color: var(--text-secondary);
    margin: 0;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Overview Content Sections - Mobile First */
.overview-content {
    display: grid;
    gap: 20px;
}

.overview-summary {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    position: relative;
}

.overview-summary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 24px;
    right: 24px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-blue), transparent);
}

.overview-summary h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    margin-bottom: 12px;
}

.overview-summary h3::before {
    content: '▶';
    color: var(--accent-blue);
    font-size: 16px;
}

.overview-summary p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    margin: 0;
}

/* Expertise Grid - Mobile First */
.overview-expertise {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
}

.expertise-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: 16px;
}

.expertise-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 16px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.expertise-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 122, 204, 0.05) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.expertise-item:hover {
    transform: translateY(-2px);
    border-color: var(--accent-blue);
    box-shadow: 0 4px 20px rgba(0, 122, 204, 0.1);
}

.expertise-item:hover::before {
    opacity: 1;
}

.expertise-item i {
    font-size: 24px;
    color: var(--accent-blue);
    margin-bottom: 12px;
    display: block;
}

.expertise-item:nth-child(2) i {
    color: var(--accent-green);
}

.expertise-item:nth-child(3) i {
    color: var(--accent-orange);
}

.expertise-item:nth-child(4) i {
    color: var(--accent-yellow);
}

.expertise-item h4 {
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 6px;
    font-weight: 600;
}

.expertise-item p {
    font-size: 12px;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.4;
}

/* Overview Recent Highlights - Mobile First */
.overview-recent {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
}

.overview-recent ul {
    margin-top: 12px;
    display: grid;
    gap: 8px;
}

.overview-recent li {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 12px 16px;
    transition: all 0.3s ease;
    font-size: 13px;
    line-height: 1.5;
}

.overview-recent li:hover {
    border-color: var(--accent-blue);
    transform: translateX(4px);
}

.overview-recent li::before {
    content: '✨';
    font-size: 14px;
    margin-right: 8px;
}

/* Navigation Grid - Mobile First */
.overview-navigation {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
}

.navigation-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    margin-top: 16px;
}

.nav-card {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 16px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: left;
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    position: relative;
    overflow: hidden;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    min-height: 44px;
}

.nav-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--accent-blue);
    transform: scaleY(0);
    transition: transform 0.3s ease;
    transform-origin: bottom;
}

.nav-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-blue);
    box-shadow: 0 4px 20px rgba(0, 122, 204, 0.15);
}

.nav-card:hover::before {
    transform: scaleY(1);
}

.nav-card i {
    font-size: 20px;
    color: var(--accent-blue);
    flex-shrink: 0;
}

.nav-card div h4 {
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 2px;
    font-weight: 600;
}

.nav-card div p {
    font-size: 11px;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.3;
}

/* Responsive Design - Mobile First Approach */

/* Small Mobile Devices (320px+) - Base styles already mobile-first above */

/* Large Mobile / Small Tablet (480px+) */
@media (min-width: 480px) {
    .overview-header {
        padding: 20px;
        margin-bottom: 24px;
    }

    .overview-title h1 {
        font-size: 28px;
    }

    .overview-subtitle {
        font-size: 16px;
    }

    .overview-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
        margin-bottom: 28px;
    }

    .stat-card {
        padding: 20px;
    }

    .stat-icon {
        font-size: 28px;
        margin-bottom: 12px;
    }

    .stat-info h3 {
        font-size: 24px;
    }

    .stat-info p {
        font-size: 13px;
    }

    .overview-content {
        gap: 24px;
    }

    .overview-summary,
    .overview-expertise,
    .overview-recent,
    .overview-navigation {
        padding: 20px;
    }

    .overview-summary h3 {
        font-size: 20px;
        margin-bottom: 16px;
    }

    .overview-summary p {
        font-size: 15px;
        line-height: 1.7;
    }

    .expertise-item {
        padding: 20px;
    }

    .expertise-item h4 {
        font-size: 17px;
    }

    .expertise-item p {
        font-size: 13px;
    }

    .nav-card {
        padding: 18px;
        gap: 14px;
    }

    .nav-card i {
        font-size: 22px;
    }

    .nav-card div h4 {
        font-size: 15px;
    }

    .nav-card div p {
        font-size: 12px;
    }
}

/* Tablet (768px+) */
@media (min-width: 768px) {
    .overview-header {
        padding: 28px;
        margin-bottom: 28px;
        border-radius: 10px;
    }

    .overview-title h1 {
        font-size: 32px;
    }

    .overview-subtitle {
        font-size: 17px;
    }

    .overview-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 18px;
        margin-bottom: 32px;
    }

    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
        margin-top: 20px;
    }

    .navigation-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
        margin-top: 20px;
    }

    .overview-content {
        gap: 28px;
    }

    .overview-summary,
    .overview-expertise,
    .overview-recent,
    .overview-navigation {
        padding: 28px;
        border-radius: 10px;
    }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
    .overview-header {
        padding: 32px;
        margin-bottom: 32px;
        border-radius: 12px;
    }

    .overview-title h1 {
        font-size: 36px;
    }

    .overview-subtitle {
        font-size: 18px;
    }

    .overview-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
        margin-bottom: 40px;
    }

    .stat-card {
        padding: 24px;
        border-radius: 12px;
    }

    .stat-icon {
        font-size: 32px;
        margin-bottom: 16px;
    }

    .stat-info h3 {
        font-size: 28px;
        margin-bottom: 8px;
    }

    .stat-info p {
        font-size: 14px;
    }

    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        margin-top: 24px;
    }

    .expertise-item {
        padding: 24px;
        border-radius: 8px;
    }

    .expertise-item i {
        font-size: 28px;
        margin-bottom: 16px;
    }

    .expertise-item h4 {
        font-size: 18px;
        margin-bottom: 8px;
    }

    .expertise-item p {
        font-size: 14px;
        line-height: 1.5;
    }

    .navigation-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
        margin-top: 24px;
    }

    .nav-card {
        padding: 20px;
        gap: 16px;
        border-radius: 8px;
    }

    .nav-card i {
        font-size: 24px;
    }

    .nav-card div h4 {
        font-size: 16px;
        margin-bottom: 4px;
    }

    .nav-card div p {
        font-size: 13px;
        line-height: 1.4;
    }

    .overview-content {
        gap: 32px;
    }

    .overview-summary,
    .overview-expertise,
    .overview-recent,
    .overview-navigation {
        padding: 32px;
        border-radius: 12px;
    }

    .overview-summary h3 {
        font-size: 22px;
        margin-bottom: 20px;
    }

    .overview-summary p {
        font-size: 16px;
        line-height: 1.8;
    }

    .overview-recent ul {
        margin-top: 20px;
        gap: 12px;
    }

    .overview-recent li {
        padding: 16px 20px;
        border-radius: 6px;
        font-size: 14px;
    }
}

/* Large Desktop (1200px+) */
@media (min-width: 1200px) {
    .expertise-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }

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