/* ═══════════════════════════════════════════════════════════════
   DOS-Style Portfolio - Stylesheet
   Light Blue Theme with High Contrast for Accessibility
   ═══════════════════════════════════════════════════════════════ */

/* CSS Custom Properties (Design Tokens) */
:root {
    /* Primary Colors - Enhanced WCAG Compliant Blue Theme */
    --bg-primary: #0a1929;
    --bg-secondary: #0d2135;
    --bg-tertiary: #132942;
    --bg-highlight: #1a3a5c;

    /* Text Colors - WCAG AAA Contrast Ratios */
    --text-primary: #00e1ff;
    --text-secondary: #66d9ef;
    --text-highlight: #ffffff;
    --text-muted: #4a90a4;
    --text-accent: #ffd700;

    /* Border Colors - Enhanced Contrast */
    --border-primary: #00bcd4;
    --border-secondary: #005566;
    --border-active: #00e1ff;

    /* Interactive States - Improved Focus States */
    --menu-active-bg: #003d52;
    --menu-hover-bg: #00293d;
    --link-color: #00e1ff;
    --link-hover: #66d9ef;

    /* Shadows & Effects - Reduced Motion Support */
    --glow-color: rgba(0, 225, 255, 0.4);
    --scanline-color: rgba(0, 225, 255, 0.02);

    /* Typography */
    --font-mono: 'Courier New', 'Consolas', 'Monaco', monospace;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* Layout */
    --menu-width: 220px;
    --header-height: 48px;
    --footer-height: 40px;
    --border-width: 2px;
}

/* Reset & Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: var(--font-size-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-mono);
    background-color: #050d18;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-md);
    line-height: 1.5;
}

/* Terminal Container */
.terminal {
    width: 100%;
    max-width: 1000px;
    height: 90vh;
    background-color: var(--bg-primary);
    border: var(--border-width) solid var(--border-primary);
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    box-shadow:
        0 0 20px var(--glow-color),
        inset 0 0 60px rgba(0, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
}

/* CRT Scanline Effect */
.terminal::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        var(--scanline-color) 2px,
        var(--scanline-color) 4px
    );
    pointer-events: none;
    z-index: 10;
}

/* Header */
.terminal-header {
    height: var(--header-height);
    background-color: var(--bg-secondary);
    border-bottom: var(--border-width) solid var(--border-primary);
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.header-left {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

/* Theme Switch */
.theme-switch {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.switch-label {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.theme-toggle-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-secondary);
    border-radius: 4px;
    padding: 4px 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: all 0.2s ease;
    color: var(--text-secondary);
}

.theme-toggle-btn:hover,
.theme-toggle-btn:focus {
    background: var(--menu-hover-bg);
    border-color: var(--border-active);
    outline: 2px solid var(--text-accent);
    outline-offset: 2px;
}

.theme-icon {
    font-size: 14px;
    transition: opacity 0.2s ease;
}

.dark-icon {
    opacity: 1;
}

.light-icon {
    opacity: 0.3;
}

/* Light Theme Styles */
body.light-theme {
    background-color: #f8f9fa;
}

body.light-theme .terminal {
    background-color: #ffffff;
    border-color: #e0e0e0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

body.light-theme .terminal-header {
    background-color: #f8f9fa;
    border-bottom-color: #e0e0e0;
}

body.light-theme .header-title {
    color: #0d47a1;
    text-shadow: none;
    font-weight: 700;
}

body.light-theme .header-info {
    color: #202124;
    font-weight: 500;
}

body.light-theme .menu-sidebar {
    background-color: #f8f9fa;
    border-right-color: #e0e0e0;
}

body.light-theme .menu-title {
    color: #1f2937;
    border-bottom-color: #e0e0e0;
    font-weight: 600;
}

body.light-theme .menu-item {
    color: #374151;
}

body.light-theme .menu-item:hover,
body.light-theme .menu-item:focus {
    background-color: #e8f0fe;
    color: #0d47a1;
    font-weight: 600;
}

body.light-theme .menu-item.active {
    background-color: #e8f0fe;
    color: #0d47a1;
    border-left-color: #f59e0b;
    font-weight: 700;
}

body.light-theme .menu-arrow {
    color: #fbbc04;
}

body.light-theme .content-area {
    background-color: #ffffff;
}

body.light-theme .section-title {
    color: #0d47a1;
    text-shadow: none;
    font-weight: 700;
}

body.light-theme .label {
    color: #0d47a1;
    font-weight: 700;
}

body.light-theme .subsection-title {
    color: #0d47a1;
    font-weight: 600;
}

body.light-theme .description {
    color: #374151;
    line-height: 1.7;
}

body.light-theme .divider {
    color: #e0e0e0;
}

body.light-theme .skill-tag {
    background-color: #f8f9fa;
    border-color: #d1d5db;
    color: #374151;
    font-weight: 500;
}

body.light-theme .skill-tag:hover {
    background-color: #e8f0fe;
    border-color: #0d47a1;
    color: #0d47a1;
    font-weight: 600;
}

body.light-theme .job-title {
    color: #0d47a1;
    font-weight: 700;
}

body.light-theme .job-date {
    color: #ea8600;
}

body.light-theme .job-company {
    color: #1f2937;
    font-weight: 600;
}

body.light-theme .job-location {
    color: #3c4043;
}

body.light-theme .job-tech {
    color: #6b7280;
    border-left-color: #d1d5db;
}

body.light-theme .job-achievements {
    color: #374151;
}

body.light-theme .job-achievements li::marker {
    color: #fbbc04;
}

body.light-theme .improvements {
    background-color: #f8f9fa;
    border-color: #e0e0e0;
}

body.light-theme .improvements h3 {
    color: #0d47a1;
    font-weight: 600;
}

body.light-theme .improvements li::before {
    color: #059669;
}

body.light-theme .project-name {
    color: #0d47a1;
    font-weight: 600;
}

body.light-theme .project-award {
    color: #ea8600;
}

body.light-theme .project-tech,
body.light-theme .project-date {
    color: #6b7280;
}

body.light-theme .cert-name {
    color: #0d47a1;
    font-weight: 600;
}

body.light-theme .cert-org {
    color: #374151;
}

body.light-theme .cert-date {
    color: #ea8600;
}

body.light-theme .hobby-item {
    background-color: #f8f9fa;
    border-color: #e0e0e0;
}

body.light-theme .hobby-item:hover {
    border-color: #1a73e8;
    background-color: #e8f0fe;
}

body.light-theme .hobby-name {
    color: #0d47a1;
    font-weight: 600;
}

body.light-theme .hobby-desc {
    color: #6b7280;
}

body.light-theme .hobby-note {
    color: #fbbc04;
    background-color: #f8f9fa;
    border-color: #e0e0e0;
}

body.light-theme .photo-border {
    color: #e0e0e0;
}

body.light-theme .photo {
    border-color: #e0e0e0;
    box-shadow: 0 0 15px rgba(26, 115, 232, 0.2);
}

body.light-theme .photo-info {
    background-color: #f8f9fa;
    border-color: #e0e0e0;
}

body.light-theme .photo-info .label {
    color: #1557b0;
    font-weight: bold;
}

body.light-theme .photo-info .info-line {
    color: #374151;
}

body.light-theme .terminal-link {
    color: #0d47a1;
    border-bottom-color: #0d47a1;
}

body.light-theme .terminal-link:hover,
body.light-theme .terminal-link:focus {
    color: #0747a0;
    border-bottom-color: #0747a0;
    background-color: #e8f0fe;
}

body.light-theme .terminal-footer {
    background-color: #f8f9fa;
    border-top-color: #e0e0e0;
}

body.light-theme .control-hint {
    color: #3c4043;
}

body.light-theme .status-text {
    color: #0d47a1;
    font-weight: 600;
}

body.light-theme .theme-toggle-btn {
    background: #f8f9fa;
    border-color: #e0e0e0;
    color: #5f6368;
}

body.light-theme .theme-toggle-btn:hover,
body.light-theme .theme-toggle-btn:focus {
    background: #e8f0fe;
    border-color: #1a73e8;
}

body.light-theme .switch-label {
    color: #3c4043;
}

body.light-theme .dark-icon {
    opacity: 0.3;
}

body.light-theme .light-icon {
    opacity: 1;
}

body.light-theme .terminal::before {
    display: none;
}

.header-title {
    font-size: var(--font-size-lg);
    font-weight: bold;
    color: var(--text-highlight);
    text-shadow: 0 0 10px var(--glow-color);
    letter-spacing: 1px;
}

.header-info {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* Main Body */
.terminal-body {
    flex: 1;
    display: flex;
    overflow: hidden;
    min-height: 0;
}

/* Menu Sidebar */
.menu-sidebar {
    width: var(--menu-width);
    background-color: var(--bg-secondary);
    border-right: var(--border-width) solid var(--border-primary);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.menu-title {
    padding: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-secondary);
    text-align: center;
    letter-spacing: 2px;
}

.menu-list {
    list-style: none;
    padding: var(--spacing-sm) 0;
    flex: 1;
}

.menu-item {
    padding: var(--spacing-md) var(--spacing-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    transition: all 0.15s ease;
    border-left: 3px solid transparent;
    outline: none;
}

.menu-item:hover {
    background-color: var(--menu-hover-bg);
    color: var(--text-primary);
}

.menu-item:focus {
    background-color: var(--menu-hover-bg);
    color: var(--text-primary);
    border-left-color: var(--border-active);
}

.menu-item.active {
    background-color: var(--menu-active-bg);
    color: var(--text-highlight);
    border-left-color: var(--text-accent);
}

.menu-arrow {
    color: var(--text-accent);
    opacity: 0;
    transition: opacity 0.15s ease;
    font-size: 12px;
}

.menu-item.active .menu-arrow,
.menu-item:hover .menu-arrow,
.menu-item:focus .menu-arrow {
    opacity: 1;
}

.menu-text {
    font-size: var(--font-size-sm);
    letter-spacing: 1px;
}

/* Content Area */
.content-area {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
    background-color: var(--bg-primary);
    outline: none;
    transition: box-shadow 0.2s ease;
}

.content-area.focused {
    box-shadow: inset 0 0 0 2px var(--border-active);
}

.content-section {
    display: none;
}

.content-section.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

/* Section Styling */
.section-title {
    font-size: var(--font-size-xl);
    color: var(--text-highlight);
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 0 10px var(--glow-color);
    letter-spacing: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: clip;
}

.section-content {
    font-size: var(--font-size-sm);
}

/* Info Blocks */
.info-block {
    margin-bottom: var(--spacing-md);
}

.info-line {
    padding: var(--spacing-xs) 0;
    display: flex;
    gap: var(--spacing-sm);
}

body.light-theme .info-line {
    color: #374151;
}

.label {
    color: var(--text-accent);
    min-width: 100px;
    flex-shrink: 0;
}

.subsection-title {
    color: var(--text-primary);
    font-weight: bold;
    margin-bottom: var(--spacing-sm);
    letter-spacing: 1px;
}

.description {
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 500px;
}

.divider {
    color: var(--border-secondary);
    margin: var(--spacing-md) 0;
    overflow: hidden;
    white-space: nowrap;
}

/* Skills Grid */
.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.skill-tag {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-secondary);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 12px;
    border-radius: 2px;
    transition: all 0.2s ease;
}

.skill-tag:hover {
    background-color: var(--menu-active-bg);
    border-color: var(--border-active);
    color: var(--text-highlight);
}

/* Certifications */
.cert-item {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px dashed var(--border-secondary);
}

.cert-name {
    color: var(--text-primary);
}

.cert-org {
    color: var(--text-muted);
}

.cert-date {
    color: var(--text-accent);
    font-size: 12px;
}

/* Job Blocks */
.job-block {
    margin-bottom: var(--spacing-md);
}

.job-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.job-title {
    color: var(--text-highlight);
    font-weight: bold;
    font-size: var(--font-size-base);
}

.job-date {
    color: var(--text-accent);
    font-size: var(--font-size-sm);
}

.job-company {
    color: var(--text-primary);
    margin-top: var(--spacing-xs);
}

.job-location {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.job-tech {
    color: var(--text-secondary);
    font-size: 12px;
    margin-top: var(--spacing-xs);
    padding: var(--spacing-xs) 0;
    border-left: 2px solid var(--border-secondary);
    padding-left: var(--spacing-sm);
}

.job-achievements {
    margin-top: var(--spacing-sm);
    padding-left: var(--spacing-lg);
    color: var(--text-secondary);
}

.job-achievements li {
    margin-bottom: var(--spacing-xs);
    position: relative;
}

.job-achievements li::marker {
    color: var(--text-accent);
    font-size: 1.2em;
}

/* Improvements Section Styling */
.improvements {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-secondary);
    border-radius: 4px;
}

.improvements h3 {
    color: var(--text-highlight);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-base);
    letter-spacing: 1px;
}

.improvements ul {
    list-style: none;
    padding: 0;
}

.improvements li {
    padding: var(--spacing-xs) 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: var(--spacing-lg);
}

.improvements li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--text-accent);
    font-weight: bold;
}

/* Projects */
.project-item {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px dashed var(--border-secondary);
}

.project-name {
    color: var(--text-highlight);
    font-weight: bold;
}

.project-award {
    color: var(--text-accent);
    font-size: 12px;
}

.project-tech {
    color: var(--text-secondary);
    font-size: 12px;
    margin-top: var(--spacing-xs);
}

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

/* Hobby Section */
.hobby-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.hobby-item {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-secondary);
    padding: var(--spacing-md);
    text-align: center;
    transition: all 0.2s ease;
    border-radius: 2px;
}

.hobby-item:hover {
    border-color: var(--border-active);
    background-color: var(--bg-tertiary);
    transform: translateY(-2px);
}

.hobby-icon {
    font-size: 32px;
    margin-bottom: var(--spacing-sm);
}

.hobby-name {
    color: var(--text-highlight);
    font-weight: bold;
    margin-bottom: var(--spacing-xs);
}

.hobby-desc {
    color: var(--text-muted);
    font-size: 12px;
}

.hobby-note {
    color: var(--text-accent);
    text-align: center;
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border: 1px dashed var(--border-secondary);
}

/* Photo Section */
.photo-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.photo-frame {
    text-align: center;
}

.photo-border {
    color: var(--border-primary);
    font-size: 12px;
    letter-spacing: 0;
}

.photo-container {
    padding: var(--spacing-md) var(--spacing-lg);
}

.photo-placeholder {
    width: 200px;
    text-align: center;
}

.ascii-portrait {
    font-size: 10px;
    line-height: 1.1;
    color: var(--text-secondary);
    white-space: pre;
    margin-bottom: var(--spacing-md);
}

.photo-note {
    color: var(--text-accent);
    margin-bottom: var(--spacing-xs);
}

.photo-hint {
    color: var(--text-muted);
    font-size: 12px;
}

.photo {
    width: 100%;
    height: auto;
    max-width: 200px; /* Or a specific size */
    border: 2px solid var(--border-primary);
    box-shadow: 0 0 15px var(--glow-color);
}

.photo-info {
    background-color: var(--bg-secondary);
    padding: var(--spacing-md);
    border: 1px solid var(--border-secondary);
    text-align: center;
}

/* Links */
.terminal-link {
    color: var(--link-color);
    text-decoration: none;
    border-bottom: 2px solid var(--link-color);
    transition: all 0.2s ease;
    padding: 2px 4px;
    border-radius: 2px;
}

.terminal-link:hover,
.terminal-link:focus {
    color: var(--link-hover);
    border-bottom-color: var(--link-hover);
    background-color: var(--menu-hover-bg);
    text-shadow: 0 0 5px var(--glow-color);
}

/* Footer */
.terminal-footer {
    height: var(--footer-height);
    background-color: var(--bg-secondary);
    border-top: var(--border-width) solid var(--border-primary);
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.footer-controls {
    display: flex;
    gap: var(--spacing-lg);
}

.control-hint {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.footer-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.status-text {
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

/* Blinking Cursor Animation */
.blink {
    animation: blink 1s step-end infinite;
}

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

/* Scrollbar Styling */
.content-area::-webkit-scrollbar {
    width: 8px;
}

.content-area::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

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

.content-area::-webkit-scrollbar-thumb:hover {
    background: var(--border-primary);
}

/* Enhanced Focus States for WCAG Compliance */
*:focus-visible {
    outline: 3px solid var(--text-accent);
    outline-offset: 3px;
    background-color: var(--menu-hover-bg);
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #ffffff;
        --text-secondary: #e0e0e0;
        --border-primary: #ffffff;
        --border-active: #ffd700;
        --glow-color: rgba(255, 215, 0, 0.5);
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .blink {
        animation: none;
    }

    .terminal::before {
        display: none;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: var(--spacing-sm);
    }

    .terminal {
        max-height: none;
        min-height: 100vh;
        border-radius: 0;
    }

    .terminal-body {
        flex-direction: column;
    }

    .menu-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: var(--border-width) solid var(--border-primary);
    }

    .menu-list {
        display: flex;
        flex-wrap: wrap;
        padding: var(--spacing-sm);
        gap: var(--spacing-xs);
    }

    .menu-item {
        flex: 1;
        min-width: 100px;
        justify-content: center;
        padding: var(--spacing-sm);
        border-left: none;
        border-bottom: 3px solid transparent;
    }

    .menu-item.active {
        border-left-color: transparent;
        border-bottom-color: var(--text-accent);
    }

    .menu-arrow {
        display: none;
    }

    .menu-title {
        display: none;
    }

    .terminal-footer {
        display: none;
    }

    .footer-controls {
        display: none;
    }

    .header-left {
        flex-direction: column;
        gap: 1px;
    }

    .header-info {
        display: none;
    }

    .header-title {
        font-size: var(--font-size-sm);
    }

    .theme-switch {
        flex-direction: column;
        gap: 2px;
    }

    .switch-label {
        font-size: 11px;
    }

    .theme-toggle-btn {
        padding: 2px 6px;
    }

    .theme-icon {
        font-size: 12px;
    }

    .footer-controls {
        gap: var(--spacing-sm);
    }

    .control-hint {
        font-size: 12px;
    }

    .cert-item {
        grid-template-columns: 1fr;
        gap: var(--spacing-xs);
    }

    .job-header {
        flex-direction: column;
    }

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

    .section-title {
        margin-bottom: var(--spacing-xl);
    }

    .menu-item.active {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .menu-item {
        min-width: 80px;
    }

    .menu-text {
        font-size: 11px;
    }

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

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

    .terminal {
        border: 1px solid #ccc;
        box-shadow: none;
    }

    .terminal::before {
        display: none;
    }

    .menu-sidebar {
        display: none;
    }

    .terminal-footer {
        display: none;
    }

    .content-section {
        display: block !important;
        page-break-inside: avoid;
    }
}