.main-header{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);box-shadow:var(--shadow-sm);transition:all .3s ease;position:sticky;top:0;z-index:100}.main-header--floating{position:fixed;top:0;left:0;right:0;width:100%;transform:translateY(0);transition:transform .22s ease,opacity .22s ease,background-color .2s ease,border-color .2s ease;pointer-events:auto}.main-header--floating.main-header--hidden{transform:translateY(-140%);opacity:0;pointer-events:none;height:0;padding:0;border:none;box-shadow:none;overflow:hidden}[data-theme=dark] .main-header--floating{background:var(--bg-primary)}[data-theme=dark] .main-header{background:var(--bg-primary);border-bottom:1px solid rgba(255,255,255,.12)}.main-header .header-content{max-width:1200px;margin:0 auto;padding:16px 24px;display:flex;justify-content:space-between;align-items:center;position:relative}.main-header--with-back .header-content{padding-left:44px}.main-header .logo-section{display:flex;align-items:center;gap:16px}.main-header .logo-icon{width:40px;height:40px;border-radius:10px;display:block;-o-object-fit:cover;object-fit:cover;background:transparent;box-shadow:none!important;border:1px solid transparent}.main-header .logo-title{font-size:24px;font-weight:700;margin:0;color:var(--text-primary);background:linear-gradient(135deg,var(--accent-color),var(--success-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.main-header .logo-subtitle{font-size:12px;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.main-header .header-nav,.main-header .nav-button{display:flex;gap:8px;align-items:center}.main-header .nav-button{background:var(--bg-secondary);border:2px solid var(--border-color);border-radius:10px;padding:8px 16px;flex-wrap:nowrap;white-space:nowrap;cursor:pointer;transition:all .3s ease;color:var(--text-secondary);font-weight:500;box-shadow:var(--shadow-sm)}.main-header .nav-button:hover{background:var(--accent-color);color:white;border-color:var(--accent-color);transform:translateY(-2px);box-shadow:var(--shadow-md)}.main-header .header-theme-toggle{background:color-mix(in srgb,var(--bg-secondary) 90%,white 10%);border:1px solid color-mix(in srgb,var(--border-color) 82%,transparent 18%);border-radius:10px;padding:0;cursor:pointer;transition:border-color .18s ease,box-shadow .18s ease,color .18s ease,background .18s ease;color:var(--text-secondary);box-shadow:0 1px 2px rgba(15,23,42,.04);font-size:0;display:flex;align-items:center;justify-content:center;min-width:34px;width:34px;height:34px}.main-header .header-theme-toggle:hover{border-color:color-mix(in srgb,var(--text-secondary) 20%,var(--border-color) 80%);background:color-mix(in srgb,var(--bg-secondary) 84%,white 16%);color:var(--text-primary);box-shadow:0 8px 18px rgba(15,23,42,.06)}.main-header .header-theme-toggle.ant-btn:focus,.main-header .header-theme-toggle.ant-btn:focus-visible,.main-header .header-theme-toggle:focus,.main-header .header-theme-toggle:focus-visible{outline:none!important;box-shadow:0 1px 2px rgba(15,23,42,.04)!important}.main-header .user-email-display{display:flex;align-items:center;padding:8px 12px;background:var(--bg-tertiary);border:2px solid var(--border-color);border-radius:10px;font-size:14px;color:var(--text-primary);font-weight:500}.main-header .nav-icon{font-size:16px}.main-header .nav-text{font-size:14px}.main-header .back-icon-button{position:absolute;left:8px;top:50%;transform:translateY(-50%);display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border:none;border-radius:9px;background:transparent;color:var(--text-secondary);cursor:pointer;transition:color .2s ease,background .2s ease,transform .2s ease;touch-action:manipulation;pointer-events:auto;z-index:150}.main-header .back-icon-button:hover{color:var(--accent-color);background:rgba(37,99,235,.12);transform:translateY(calc(-50% - 1px))}.main-header .back-icon-button:focus-visible{outline:2px solid var(--accent-color);outline-offset:2px}.back-icon{display:block}.main-header .logo-content{display:flex;flex-direction:column;gap:4px}.main-header .logo-link{text-decoration:none;color:inherit;cursor:pointer;border-radius:8px;display:inline-flex;align-items:center;gap:12px;padding:4px 6px}.main-header .logo-link:focus-visible{outline:2px solid var(--accent-color);outline-offset:2px}.main-header .header-settings-button{width:34px;height:34px;padding:0;border:1px solid var(--border-color);border-radius:10px;background:var(--bg-secondary);color:var(--text-secondary);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease,color .2s ease,background .2s ease}.main-header .header-settings-button:hover{transform:translateY(-1px);box-shadow:var(--shadow-md);color:var(--text-primary)}.main-header .header-settings-button:focus-visible{outline:none;box-shadow:var(--shadow-sm)}.main-header .header-nav .ant-btn:focus,.main-header .header-nav .ant-btn:focus-visible,.main-header .header-nav .ant-dropdown-trigger:focus,.main-header .header-nav .ant-dropdown-trigger:focus-visible{outline:none!important;box-shadow:0 1px 2px rgba(15,23,42,.04)!important}.language-selector__flag{line-height:1}.language-selector-dropdown .ant-dropdown-menu{background:var(--bg-card);border:1px solid var(--border-color);box-shadow:var(--shadow-md)}.language-selector-dropdown .ant-dropdown-menu-item,.language-selector-dropdown .ant-dropdown-menu-title-content,.language-selector-dropdown .ant-dropdown-menu-title-content span{color:var(--text-primary)}.language-selector-dropdown 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.logo-title{font-size:20px}.main-header .logo-icon{width:34px;height:34px;border-radius:8px}.main-header .header-nav{gap:8px}.main-header .nav-button{padding:6px 12px}.main-header .header-theme-toggle{width:34px;min-width:34px;height:36px;padding:0}.language-selector__trigger,.main-header .header-settings-button{height:36px}.language-selector__trigger{min-width:48px}.main-header .user-email-display{padding:6px 10px;font-size:13px}.main-header .nav-text{display:none}.main-header .nav-icon{font-size:18px}.token-inline-info{flex-direction:column;align-items:flex-start;gap:4px}.token-inline-details{text-align:left;gap:6px}.token-reset-info{flex-direction:column;align-items:flex-start;gap:2px}.token-reset-label{font-size:9px}.token-reset-time{padding:1px 4px;font-size:9px}.token-count-number{padding:1px 4px;font-size:10px}.token-count-label{font-size:10px}}@media (max-width:480px){:root{--main-header-height:64px}.main-header .header-content{flex-direction:column;gap:16px;align-items:stretch;padding-left:16px}.main-header .back-icon-button{position:static;transform:none;align-self:flex-start;margin-bottom:8px;width:32px;height:32px}.main-header .logo-section{justify-content:flex-start;text-align:left;align-self:stretch;width:100%}.main-header .logo-icon{width:30px;height:30px;border-radius:8px}.main-header .header-nav{justify-content:center;gap:6px;flex-wrap:wrap}.main-header .nav-button{padding:6px 10px;min-width:48px}.main-header .header-theme-toggle{min-width:36px;height:32px;padding:0;justify-content:center}.language-selector__trigger,.main-header .header-settings-button{height:32px;min-width:36px}.language-selector__trigger{min-width:44px;padding:0 8px}.logout-modal,.settings-modal{width:calc(100vw - 24px)}.logout-modal-actions,.logout-modal-content,.logout-modal-header,.settings-modal-actions,.settings-modal-content,.settings-modal-header{padding-left:18px;padding-right:18px}.logout-modal-actions,.settings-modal-actions{flex-direction:column-reverse}.logout-modal-button,.settings-close-button,.settings-logout-button{width:100%;justify-content:center}}