*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{width:100%;height:100%;margin:0;padding:0}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100vh}.header{z-index:1000;background:transparent;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}.header--sticky{position:sticky;top:0}.logo-content{display:flex;align-items:center;gap:.5rem}.logo-image{height:clamp(calc(48px * var(--logo-scale, 1) * var(--logo-min-size, 50) / 100),calc(3.5vw * var(--logo-scale, 1)),calc(48px * var(--logo-scale, 1)));width:auto;max-width:100%;object-fit:contain;display:block;background:transparent;opacity:var(--logo-opacity, 1);filter:drop-shadow(0 2px 4px rgba(0,0,0,calc(.5 * var(--logo-shadow, 0))))}.logo-image--colored{aspect-ratio:4.76;background-color:var(--logo-color, #000);-webkit-mask-image:var(--logo-url);mask-image:var(--logo-url);-webkit-mask-size:contain;mask-size:contain;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;-webkit-mask-position:center;mask-position:center}.header-container{max-width:1400px;margin:0 auto;padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center;gap:2rem;position:relative}.header-container .nav-desktop{position:absolute;left:50%;transform:translate(-50%)}.logo{text-decoration:none;color:var(--text-primary);font-family:var(--font-heading);font-size:1.5rem;font-weight:700;display:flex;align-items:center;gap:.5rem;transition:all var(--transition-normal)}.logo-icon{font-size:2rem;filter:drop-shadow(0 0 10px 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ease}.language-selector__option:hover{background:var(--background-card-hover);color:var(--text-primary)}.language-selector__option:focus-visible{outline:2px solid var(--primary-gradient-start, #667eea);outline-offset:-2px}.language-selector__option-flag{width:20px;height:10px;flex-shrink:0;border-radius:2px;box-shadow:inset 0 0 0 1px #00000014}.language-selector__option-name{font-weight:500}.control-button,.language-toggle{display:none}.language-flag{font-size:1.2rem}.language-code-old{font-family:var(--font-mono)}.theme-selector{position:relative}.theme-icon{font-size:1.2rem}.theme-menu{position:absolute;top:calc(100% + .5rem);right:0;background:var(--background-secondary);border:1px solid var(--border);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-xl);overflow:hidden;min-width:200px;z-index:1001}.theme-option{width:100%;padding:.75rem 1rem;background:transparent;border:none;color:var(--text-secondary);text-align:left;cursor:pointer;font-size:.9rem;transition:all 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reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}