:root{--container-max-width: 1200px;--container-padding: 1rem;--header-height: 60px;--color-primary: #ffffff;--color-secondary: #f8f9fa;--color-tertiary: #e9ecef;--color-accent: #007bff;--color-accent-hover: #0056b3;--color-success: #28a745;--color-warning: #ffc107;--color-danger: #dc3545;--color-info: #17a2b8;--color-bullet-primary: #ff6b35;--color-bullet-secondary: #ff8c42;--color-bullet-accent: #ffa726;--color-text: #212529;--color-text-secondary: #6c757d;--color-text-muted: #adb5bd;--color-text-inverse: #ffffff;--color-bg: #ffffff;--color-bg-secondary: #f8f9fa;--color-bg-tertiary: #e9ecef;--color-bg-overlay: rgba(0, 0, 0, .5);--color-border: #dee2e6;--color-border-light: rgba(0, 0, 0, .06);--color-border-focus: #80bdff;--font-family-base: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-family-heading: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-family-mono: "Fira Code", "Courier New", monospace;--font-size-xs: clamp(.75rem, .7rem + .25vw, .875rem);--font-size-sm: clamp(.875rem, .8rem + .35vw, 1rem);--font-size-base: clamp(1rem, .95rem + .25vw, 1.125rem);--font-size-lg: clamp(1.125rem, 1rem + .5vw, 1.25rem);--font-size-xl: clamp(1.25rem, 1.1rem + .75vw, 1.5rem);--font-size-2xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);--font-size-3xl: clamp(1.875rem, 1.5rem + 1.5vw, 2.5rem);--font-size-4xl: clamp(2.25rem, 1.8rem + 2vw, 3rem);--font-weight-light: 300;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--line-height-tight: 1.2;--line-height-base: 1.6;--line-height-relaxed: 1.8;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--spacing-3xl: 4rem;--spacing-4xl: 6rem;--radius-sm: .25rem;--radius-md: .375rem;--radius-lg: .5rem;--radius-xl: 1rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--shadow-focus: 0 0 0 3px rgba(0, 123, 255, .25);--transition-fast: .15s ease-in-out;--transition-base: .25s ease-in-out;--transition-slow: .35s ease-in-out;--z-dropdown: 1000;--z-sticky: 1020;--z-fixed: 1030;--z-modal-backdrop: 1040;--z-modal: 1050;--z-popover: 1060;--z-tooltip: 1070;--breakpoint-sm: 576px;--breakpoint-md: 768px;--breakpoint-lg: 992px;--breakpoint-xl: 1200px;--breakpoint-2xl: 1400px}[data-theme=dark]{--color-primary: #1a1a1a;--color-secondary: #2d2d2d;--color-tertiary: #3a3a3a;--color-accent: #4dabf7;--color-accent-hover: #339af0;--color-bullet-primary: #ff7b47;--color-bullet-secondary: #ff9c54;--color-bullet-accent: #ffb74d;--color-text: #e9ecef;--color-text-secondary: #adb5bd;--color-text-muted: #6c757d;--color-text-inverse: #212529;--color-bg: #1a1a1a;--color-bg-secondary: #2d2d2d;--color-bg-tertiary: #3a3a3a;--color-bg-overlay: rgba(0, 0, 0, .7);--color-border: #3a3a3a;--color-border-light: rgba(255, 255, 255, .1);--color-border-focus: #4dabf7;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .3), 0 2px 4px -1px rgba(0, 0, 0, .2);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .3), 0 4px 6px -2px rgba(0, 0, 0, .2);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .4), 0 10px 10px -5px rgba(0, 0, 0, .2)}[data-theme=professional]{--color-primary: #f8f9fa;--color-secondary: #e9ecef;--color-tertiary: #dee2e6;--color-accent: #2c3e50;--color-accent-hover: #1a252f;--color-bullet-primary: #e67e22;--color-bullet-secondary: #f39c12;--color-bullet-accent: #d68910;--color-text: #2c3e50;--color-text-secondary: #5a6c7d;--color-text-muted: #95a5a6;--color-text-inverse: #ffffff;--color-bg: #f8f9fa;--color-bg-secondary: #e9ecef;--color-bg-tertiary: #dee2e6}@media (prefers-reduced-motion: reduce){:root{--transition-fast: 0ms;--transition-base: 0ms;--transition-slow: 0ms}}@media (prefers-contrast: high){:root{--color-border: #000000;--shadow-focus: 0 0 0 3px rgba(0, 0, 0, .5)}}.about-section .about-content{max-width:800px;margin:0 auto var(--spacing-3xl);text-align:center}.about-highlights{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-2xl);margin-top:var(--spacing-3xl)}.highlight-item{text-align:center;padding:var(--spacing-xl);background-color:var(--color-bg);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);transition:transform var(--transition-base),box-shadow var(--transition-base)}.highlight-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.highlight-item h3{font-size:var(--font-size-4xl);color:var(--color-accent);margin-bottom:var(--spacing-sm);font-weight:var(--font-weight-bold)}.highlight-item p{font-size:var(--font-size-base);color:var(--color-text-secondary);margin:0}.skills-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--spacing-xl)}.skill-category{background-color:var(--color-bg);padding:var(--spacing-xl);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);transition:transform var(--transition-base),box-shadow var(--transition-base)}.skill-category:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.skill-category h3{color:var(--color-accent);margin-bottom:var(--spacing-lg);font-size:var(--font-size-xl);border-bottom:2px solid var(--color-border-light);padding-bottom:var(--spacing-sm)}.skill-category ul{list-style:none;padding:0;margin:0}.skill-category li{padding:var(--spacing-sm) 0;color:var(--color-text);font-size:var(--font-size-base);display:flex;align-items:center;line-height:var(--line-height-base)}.skill-category li:before{content:"";display:block;width:6px;height:6px;background:var(--color-bullet-primary);border-radius:50%;margin-right:var(--spacing-md);flex-shrink:0;box-shadow:0 0 0 1px var(--color-bullet-secondary);transition:transform var(--transition-fast),box-shadow var(--transition-fast)}.skill-category li:hover:before{transform:scale(1.15);box-shadow:0 0 0 2px var(--color-bullet-secondary),0 2px 4px #ff6b3540}[data-theme=dark] .skill-category li:before{background:#ff7b47;box-shadow:0 0 0 1px #ffb380}[data-theme=dark] .skill-category li:hover:before{box-shadow:0 0 0 2px #ffb380,0 2px 4px #ff7b474d}[data-theme=dark] .experience-highlights li:before{background:#ff7b47;box-shadow:0 0 0 1px #ffb380}[data-theme=dark] .experience-highlights li:hover:before{box-shadow:0 0 0 2px #ffb380,0 2px 4px #ff7b474d}[data-theme=professional] .skill-category li:before{background:#e67e22;box-shadow:0 0 0 1px #f39c12}[data-theme=professional] .skill-category li:hover:before{box-shadow:0 0 0 2px #f39c12,0 2px 4px #e67e2240}[data-theme=professional] .experience-highlights li:before{background:#e67e22;box-shadow:0 0 0 1px #f39c12}[data-theme=professional] .experience-highlights li:hover:before{box-shadow:0 0 0 2px #f39c12,0 2px 4px #e67e2240}@media (max-width: 768px){.skill-category li:before{width:5px;height:5px;margin-right:var(--spacing-sm)}.experience-highlights li:before{width:4px;height:4px;top:.7em}}@media (prefers-reduced-motion: reduce){.skill-category li:before,.experience-highlights li:before{transition:none}.skill-category li:hover:before,.experience-highlights li:hover:before{transform:none}}@media (prefers-contrast: high){.skill-category li:before,.experience-highlights li:before{background:var(--color-text);border:1px solid var(--color-bg)}}.experience-timeline{max-width:900px;margin:0 auto;position:relative}.experience-timeline:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(to bottom,var(--color-accent),var(--color-border-light));border-radius:var(--radius-full)}.experience-item{position:relative;padding-left:var(--spacing-2xl);margin-bottom:var(--spacing-3xl)}.experience-item:before{content:"";position:absolute;left:-6px;top:0;width:15px;height:15px;background-color:var(--color-accent);border:3px solid var(--color-bg);border-radius:var(--radius-full);box-shadow:var(--shadow-md)}.experience-header{margin-bottom:var(--spacing-md)}.experience-header h3{font-size:var(--font-size-xl);color:var(--color-text);margin-bottom:var(--spacing-sm)}.experience-period{display:inline-block;background-color:var(--color-accent);color:var(--color-text-inverse);padding:var(--spacing-xs) var(--spacing-md);border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);margin-top:var(--spacing-sm)}.experience-company{display:block;color:var(--color-text-secondary);font-size:var(--font-size-sm);font-style:italic;margin-top:var(--spacing-xs)}.experience-highlights{list-style:none;padding:0;margin:var(--spacing-md) 0 0}.experience-highlights li{padding:var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-lg);position:relative;color:var(--color-text-secondary);line-height:var(--line-height-relaxed)}.experience-highlights li:before{content:"";position:absolute;left:0;top:1.2em;width:5px;height:5px;background:var(--color-bullet-primary);border-radius:50%;box-shadow:0 0 0 1px var(--color-bullet-secondary);transition:transform var(--transition-fast),box-shadow var(--transition-fast)}.experience-highlights li:hover:before{transform:scale(1.2);box-shadow:0 0 0 2px var(--color-bullet-secondary),0 2px 4px #ff6b3540}.projects{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-2xl)}.project-placeholder{text-align:center;padding:var(--spacing-3xl);background-color:var(--color-bg);border:2px dashed var(--color-border);border-radius:var(--radius-lg);color:var(--color-text-secondary)}.project-card{background-color:var(--color-bg);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);transition:transform var(--transition-base),box-shadow var(--transition-base)}.project-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl)}.project-card img{width:100%;height:200px;object-fit:cover}.project-content{padding:var(--spacing-xl)}.project-content h3{margin-bottom:var(--spacing-md);color:var(--color-text)}.project-tags{display:flex;flex-wrap:wrap;gap:var(--spacing-sm);margin-top:var(--spacing-md)}.project-tag{display:inline-block;padding:var(--spacing-xs) var(--spacing-md);background-color:var(--color-bg-tertiary);color:var(--color-text-secondary);border-radius:var(--radius-full);font-size:var(--font-size-xs);font-weight:var(--font-weight-medium)}.education-item{max-width:600px;margin:0 auto;text-align:center;padding:var(--spacing-xl);background-color:var(--color-bg);border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.education-item h3{color:var(--color-accent);margin-bottom:var(--spacing-sm)}.education-item p{color:var(--color-text-secondary);margin:0}.posts{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-2xl)}.blog-placeholder{text-align:center;padding:var(--spacing-3xl);background-color:var(--color-bg);border:2px dashed var(--color-border);border-radius:var(--radius-lg);color:var(--color-text-secondary)}.blog-card{background-color:var(--color-bg);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md);transition:transform var(--transition-base),box-shadow var(--transition-base)}.blog-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.blog-card-content{padding:var(--spacing-xl)}.blog-card h3{margin-bottom:var(--spacing-md);color:var(--color-text)}.blog-meta{display:flex;gap:var(--spacing-md);color:var(--color-text-muted);font-size:var(--font-size-sm);margin-bottom:var(--spacing-md)}.contact-content{max-width:800px;margin:0 auto}.contact-intro{text-align:center;font-size:var(--font-size-lg);margin-bottom:var(--spacing-3xl);color:var(--color-text-secondary)}.contact-info{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--spacing-2xl)}.contact-item{text-align:center;padding:var(--spacing-xl);background-color:var(--color-bg);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);transition:transform var(--transition-base),box-shadow var(--transition-base)}.contact-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.contact-item strong{display:block;font-size:var(--font-size-lg);color:var(--color-accent);margin-bottom:var(--spacing-md)}.contact-item p{margin-bottom:var(--spacing-xs);font-size:var(--font-size-base)}.contact-item a{color:var(--color-text);word-break:break-word}.contact-item a:hover{color:var(--color-accent)}@media (max-width: 768px){.about-highlights,.skills-grid,.projects,.posts,.contact-info{grid-template-columns:1fr}.experience-timeline:before{left:0}.experience-item{padding-left:var(--spacing-xl)}}.site-warning{display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-md);background-color:#fff3cd;color:#856404;border:1px solid #ffeeba;padding:calc(var(--spacing-sm) + 2px) var(--spacing-md);width:100%;box-shadow:var(--shadow-sm);font-size:var(--font-size-sm)}.site-warning .warning-content{display:flex;align-items:center;gap:var(--spacing-md);flex:1 1 auto}.site-warning .warning-icon{font-size:1.25rem;line-height:1}.site-warning p{margin:0;color:inherit}.site-warning .warning-actions{display:flex;gap:var(--spacing-sm);align-items:center}.site-warning .btn-close{background:transparent;border:none;color:inherit;padding:var(--spacing-xs) var(--spacing-sm);cursor:pointer;font-weight:var(--font-weight-semibold)}.site-warning .btn-close:focus-visible{box-shadow:var(--shadow-focus)}@media (max-width: 560px){.site-warning{flex-direction:column;align-items:flex-start}.site-warning .warning-actions{width:100%;justify-content:flex-end}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}.site-warning{display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-lg);padding:var(--spacing-md) var(--spacing-xl)}.site-warning .warning-content{display:flex;align-items:center;gap:var(--spacing-md)}.site-warning .warning-actions{display:flex;align-items:center;margin-left:auto}.site-warning .btn-close{margin-left:auto;align-self:center}html{scroll-behavior:smooth;font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-padding-top:calc(var(--header-height) + 1rem)}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}body{margin:0;font-family:var(--font-family-base);font-size:var(--font-size-base);font-weight:var(--font-weight-normal);line-height:var(--line-height-base);color:var(--color-text);background-color:var(--color-bg);transition:background-color var(--transition-base),color var(--transition-base)}h1,h2,h3,h4,h5,h6{font-family:var(--font-family-heading);font-weight:var(--font-weight-bold);line-height:var(--line-height-tight);margin-bottom:var(--spacing-md);color:var(--color-text)}h1{font-size:var(--font-size-4xl)}h2{font-size:var(--font-size-3xl)}h3{font-size:var(--font-size-2xl)}h4{font-size:var(--font-size-xl)}h5{font-size:var(--font-size-lg)}h6{font-size:var(--font-size-base)}p{margin-bottom:var(--spacing-md)}.lead{font-size:var(--font-size-lg);font-weight:var(--font-weight-normal);line-height:var(--line-height-relaxed)}a{color:var(--color-accent);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-accent-hover);text-decoration:underline}a:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px;border-radius:var(--radius-sm)}ul,ol{margin-bottom:var(--spacing-md);padding-left:var(--spacing-xl)}li{margin-bottom:var(--spacing-xs)}strong{font-weight:var(--font-weight-semibold)}.container{max-width:var(--container-max-width);margin:0 auto;padding:var(--container-padding);width:100%}header{position:sticky;top:0;z-index:var(--z-sticky);background:var(--color-bg-secondary);border-bottom:1px solid var(--color-border-light);box-shadow:var(--shadow-sm);transition:transform .35s ease-in-out,background-color var(--transition-base)}header.header-hidden{transform:translateY(-100%)}header .container{display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-md);padding-top:var(--spacing-md);padding-bottom:var(--spacing-md);position:relative}.site-title{font-size:var(--font-size-xl);font-weight:var(--font-weight-bold);margin:0;color:var(--color-text);z-index:2}.mobile-menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:var(--spacing-sm);z-index:3;position:relative}.mobile-menu-toggle:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px;border-radius:var(--radius-sm)}.hamburger-icon{display:flex;flex-direction:column;justify-content:space-between;width:28px;height:21px;position:relative}.hamburger-line{width:100%;height:3px;background-color:var(--color-text);border-radius:var(--radius-sm);transition:all .3s ease-in-out;transform-origin:center}.mobile-menu-toggle[aria-expanded=true] .hamburger-line:nth-child(1){transform:translateY(9px) rotate(45deg)}.mobile-menu-toggle[aria-expanded=true] .hamburger-line:nth-child(2){opacity:0;transform:scaleX(0)}.mobile-menu-toggle[aria-expanded=true] .hamburger-line:nth-child(3){transform:translateY(-9px) rotate(-45deg)}.main-navigation{flex:1;display:flex;justify-content:center}.nav-menu{list-style:none;margin:0;padding:0;display:flex;gap:var(--spacing-lg)}.nav-menu a{display:block;padding:var(--spacing-sm) var(--spacing-md);font-weight:var(--font-weight-medium);color:var(--color-text);border-radius:var(--radius-md);transition:background-color var(--transition-fast),color var(--transition-fast);min-height:44px;display:flex;align-items:center}.nav-menu a:hover{background-color:var(--color-bg-tertiary);text-decoration:none}.nav-menu a:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.theme-controls{display:flex;align-items:center;z-index:2}#theme-toggle{padding:var(--spacing-sm) var(--spacing-md);background-color:var(--color-accent);color:var(--color-text-inverse);border:none;border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);cursor:pointer;transition:background-color var(--transition-fast),transform var(--transition-fast);min-height:44px;display:flex;align-items:center;gap:var(--spacing-xs)}#theme-toggle:hover{background-color:var(--color-accent-hover);transform:translateY(-1px)}#theme-toggle:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px;box-shadow:var(--shadow-focus)}#theme-toggle:active{transform:translateY(0)}.language-switcher{display:flex;align-items:center;z-index:2}#language-select{padding:var(--spacing-sm) var(--spacing-md);background-color:var(--color-bg-secondary);color:var(--color-text);border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);cursor:pointer;transition:border-color var(--transition-fast),background-color var(--transition-fast);min-height:44px;appearance:none;background-image:url('data:image/svg+xml;charset=UTF-8,<svg xmlns="http://www.w3.org/2000/svg" width="12" height="8" viewBox="0 0 12 8"><path fill="currentColor" d="M6 8L0 2 1.4 0.6 6 5.2 10.6 0.6 12 2z"/></svg>');background-repeat:no-repeat;background-position:right var(--spacing-sm) center;padding-right:2.5em;font-family:"Segoe UI Emoji","Noto Color Emoji","Apple Color Emoji",system-ui,-apple-system,sans-serif}#language-select:hover{border-color:var(--color-accent);background-color:var(--color-bg-tertiary)}#language-select:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px;box-shadow:var(--shadow-focus);border-color:var(--color-accent)}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}#language-select{position:relative}#language-select:after{content:attr(data-current-text);position:absolute;right:2.5em;top:50%;transform:translateY(-50%);pointer-events:none;font-size:var(--font-size-sm);color:var(--color-text)}@media (max-width: 480px){.language-switcher{padding-left:var(--spacing-sm);padding-right:var(--spacing-sm)}#language-select{width:48px;min-width:48px;padding:8px 12px 8px 0;text-align:center;font-size:1.25rem}#language-select{background-position:right 8px center}.language-switcher #language-select{height:48px;padding-right:1rem;display:inline-flex;align-items:center;justify-content:center}}.btn{display:inline-block;padding:var(--spacing-md) 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0;scroll-margin-top:var(--header-height)}section:nth-child(2n){background-color:var(--color-bg-secondary)}section h2{text-align:center;margin-bottom:var(--spacing-3xl);position:relative}section h2:after{content:"";display:block;width:60px;height:4px;background-color:var(--color-accent);margin:var(--spacing-md) auto 0;border-radius:var(--radius-full)}.hero-section{text-align:center;background:linear-gradient(135deg,var(--color-bg) 0%,var(--color-bg-secondary) 100%);padding:var(--spacing-4xl) 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