:root{--font-serif: "Newsreader", Georgia, serif;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "JetBrains Mono", monospace;--bg-color: #fafaf8;--bg-card: #ffffff;--bg-subtle: #f4f4f0;--text-main: #18181b;--text-muted: #52525b;--text-light: #71717a;--border-color: #e4e4e0;--border-strong: #d1d1ca;--accent-color: #18181b;--accent-hover: #27272a;--accent-subtle: #e4e4e0;--accent-highlight: #2563eb;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .04);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .06), 0 2px 4px -1px rgba(0, 0, 0, .04);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .08), 0 4px 6px -2px rgba(0, 0, 0, .05);--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-normal: .25s cubic-bezier(.4, 0, .2, 1);--header-height: 72px}[data-theme=dark]{--bg-color: #0c0d10;--bg-card: #13151b;--bg-subtle: #181a22;--text-main: #f4f4f6;--text-muted: #a1a1aa;--text-light: #71717a;--border-color: #232630;--border-strong: #363a48;--accent-color: #f4f4f6;--accent-hover: #e4e4e7;--accent-subtle: #232630;--accent-highlight: #3b82f6;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .4);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .5);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .6)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-height) + 1.25rem);font-size:16px}.scroll-progress{position:fixed;top:0;left:0;height:2.5px;width:0%;background-color:var(--text-main);z-index:1001;pointer-events:none;transition:width .08s linear}body{font-family:var(--font-sans);background-color:var(--bg-color);color:var(--text-main);line-height:1.65;letter-spacing:-.011em;transition:background-color var(--transition-normal),color var(--transition-normal);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}a{color:inherit;text-decoration:none;transition:color 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0ms);will-change:opacity,transform}.reveal.revealed{opacity:1;transform:translateY(0)}.reveal-header{opacity:0;transform:translateY(18px);transition:opacity .6s cubic-bezier(.22,1,.36,1),transform .6s cubic-bezier(.22,1,.36,1);will-change:opacity,transform}.reveal-header.revealed{opacity:1;transform:translateY(0)}.reveal-header .section-divider{transform-origin:left;transform:scaleX(0);transition:transform .7s cubic-bezier(.22,1,.36,1) .15s}.reveal-header.revealed .section-divider{transform:scaleX(1)}.back-to-top{position:fixed;bottom:2rem;right:2rem;width:42px;height:42px;border-radius:50%;background-color:var(--bg-card);border:1px solid var(--border-color);color:var(--text-muted);display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transform:translateY(12px) scale(.9);transition:opacity .25s cubic-bezier(.22,1,.36,1),transform .25s cubic-bezier(.22,1,.36,1),visibility .25s,background-color var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast);z-index:990}.back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0) scale(1)}.back-to-top:hover{color:var(--text-main);border-color:var(--border-strong);background-color:var(--bg-subtle);transform:translateY(-2px) scale(1.04)}.back-to-top svg{transition:transform .2s cubic-bezier(.22,1,.36,1)}.back-to-top:hover svg{transform:translateY(-2px)}@media (max-width: 900px){.hero-title{font-size:3.2rem}.contact-grid{grid-template-columns:1fr;gap:2.5rem}.skills-grid,.projects-grid,.certifications-grid,.principles-grid{grid-template-columns:1fr}}@media (max-width: 768px){.nav-menu{position:fixed;top:var(--header-height);left:0;width:100%;background-color:var(--bg-card);border-bottom:1px solid var(--border-color);padding:1.5rem;display:none}.nav-menu.open{display:block}.nav-list{flex-direction:column;align-items:flex-start;gap:1.25rem}.nav-toggle{display:flex}.hero-title{font-size:2.5rem}.hero-subtitle{font-size:1.25rem}.hero-description{font-size:1rem}.hero-actions{flex-direction:column;align-items:stretch}.hero-socials{gap:1rem}.section{padding:4rem 0}.reveal{transform:translateY(16px)}.back-to-top{bottom:1.5rem;right:1.5rem;width:38px;height:38px}.toast-container{bottom:4.5rem;right:1.5rem}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}.reveal,.reveal-header,.reveal-header .section-divider,.scroll-fade-item{opacity:1!important;transform:none!important;transition:none!important}.timeline:before{transform:none!important;transition:none!important}.timeline-dot{opacity:1!important;transform:translate(-50%)!important;transition:none!important}.scroll-progress{display:none!important}}