:root{--font-sans:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-display:ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--bg-page:#0b0b14;--bg-primary:#0b0b14;--bg-secondary:#121225;--surface-panel:#141426b8;--surface-raised:#ffffff0a;--surface-muted:#ffffff0f;--surface-popover:#131326fa;--surface-highlight:#6366f11f;--surface-line:#ffffff1a;--input-bg:#00000042;--input-bg-focus:#00000061;--accent-primary:#6366f1;--accent-primary-hover:#4f46e5;--accent-secondary:#a855f7;--color-success:#10b981;--color-warning:#f59e0b;--color-error:#ef4444;--color-info:#3b82f6;--text-primary:#f8fafc;--text-secondary:#a5b4c7;--text-muted:#718198;--border-subtle:#ffffff14;--border-strong:#ffffff24;--border-accent:#6366f147;--glass-bg:var(--surface-panel);--glass-border:var(--border-subtle);--glass-border-focus:#6366f173;--glass-shadow:0 18px 50px #00000061;--radius-sm:8px;--radius-md:12px;--radius-lg:20px;--transition-fast:.2s cubic-bezier(.4, 0, .2, 1);--transition-normal:.3s cubic-bezier(.4, 0, .2, 1)}:root[data-theme=light]{--bg-page:#f6f7fb;--bg-primary:#f6f7fb;--bg-secondary:#fff;--surface-panel:#ffffffe0;--surface-raised:#0f172a09;--surface-muted:#0f172a0f;--surface-popover:#fffffffa;--surface-highlight:#4f46e517;--surface-line:#0f172a1f;--input-bg:#ffffffc2;--input-bg-focus:#fff;--accent-primary:#4f46e5;--accent-primary-hover:#4338ca;--accent-secondary:#9333ea;--text-primary:#111827;--text-secondary:#475569;--text-muted:#64748b;--border-subtle:#0f172a1a;--border-strong:#0f172a29;--border-accent:#4f46e538;--glass-shadow:0 18px 50px #0f172a1f}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-page);background-image:radial-gradient(circle at 12% 18%, color-mix(in srgb, var(--accent-primary) 13%, transparent) 0%, transparent 36%), radial-gradient(circle at 88% 82%, color-mix(in srgb, var(--accent-secondary) 12%, transparent) 0%, transparent 40%), linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));min-height:100vh;color:var(--text-primary);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;background-attachment:fixed;overflow-x:hidden}button,input,select{font:inherit}button{color:inherit}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--surface-muted)}::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:var(--radius-sm)}.app-container{flex-direction:column;gap:30px;max-width:1000px;min-height:100vh;margin:0 auto;padding:40px 20px;display:flex}.app-header{text-align:center;flex-direction:column;align-items:center;gap:10px;margin-bottom:4px;display:flex}.app-header-row{grid-template-columns:1fr auto 1fr;align-items:center;width:100%;display:grid}.logo-container{grid-column:2;justify-content:center;align-items:center;gap:12px;display:flex}.logo-icon{color:var(--accent-primary);filter:drop-shadow(0 0 10px color-mix(in srgb, var(--accent-primary) 45%, transparent));animation:4s ease-in-out infinite float}.app-title{font-family:var(--font-display);background:linear-gradient(135deg, var(--text-primary) 28%, var(--accent-primary) 68%, var(--accent-secondary));-webkit-text-fill-color:transparent;letter-spacing:0;-webkit-background-clip:text;font-size:2.5rem;font-weight:800}.header-actions{grid-column:3;justify-self:end;align-items:center;gap:8px;display:flex}.header-action-btn,.timezone-chevron-btn{border:1px solid var(--border-subtle);background:var(--surface-raised);color:var(--text-secondary);cursor:pointer;transition:var(--transition-fast)}.header-action-btn{border-radius:var(--radius-sm);justify-content:center;align-items:center;width:36px;height:36px;text-decoration:none;display:inline-flex}.header-action-btn:hover,.timezone-chevron-btn:hover{border-color:var(--border-accent);color:var(--text-primary);background:var(--surface-highlight)}.app-subtitle{color:var(--text-secondary);max-width:620px;font-size:1.05rem;font-weight:400;line-height:1.5}.tabs-container{background:var(--surface-raised);border:1px solid var(--glass-border);border-radius:var(--radius-md);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);justify-content:center;max-width:640px;margin:0 auto 10px;padding:6px;display:flex}.tab-btn{min-width:0;color:var(--text-secondary);font-family:var(--font-display);cursor:pointer;border-radius:var(--radius-sm);transition:var(--transition-fast);white-space:nowrap;background:0 0;border:none;flex:1;justify-content:center;align-items:center;gap:8px;padding:10px 16px;font-size:.92rem;font-weight:650;display:flex}.tab-btn:hover{color:var(--text-primary);background:var(--surface-muted)}.tab-btn.active{color:#fff;background:var(--accent-primary);box-shadow:0 4px 15px color-mix(in srgb, var(--accent-primary) 35%, transparent)}.main-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);box-shadow:var(--glass-shadow);transition:transform var(--transition-normal), box-shadow var(--transition-normal);padding:30px;position:relative;overflow:visible}.main-card:before{content:"";background:linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));opacity:.8;width:100%;height:2px;position:absolute;top:0;left:0}.calculator-grid{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:35px;display:grid}.form-section,.results-content{flex-direction:column;gap:20px;display:flex}.form-group{flex-direction:column;gap:8px;display:flex}.form-label{font-family:var(--font-display);color:var(--text-primary);letter-spacing:0;font-size:.9rem;font-weight:650}.input-icon-wrapper{align-items:center;display:flex;position:relative}.input-icon{color:var(--text-muted);pointer-events:none;position:absolute;left:14px}.form-input{background:var(--input-bg);border:1px solid var(--glass-border);border-radius:var(--radius-sm);width:100%;color:var(--text-primary);transition:var(--transition-fast);font-size:.95rem;font-family:var(--font-sans);padding:12px 14px 12px 42px}.form-input:focus{border-color:var(--glass-border-focus);background:var(--input-bg-focus);box-shadow:0 0 12px color-mix(in srgb, var(--accent-primary) 18%, transparent);outline:none}.form-input option{color:var(--text-primary);background:var(--bg-secondary)}input[type=date]::-webkit-calendar-picker-indicator{cursor:pointer;opacity:.72;transition:var(--transition-fast)}:root[data-theme=dark] input[type=date]::-webkit-calendar-picker-indicator{filter:invert()brightness(.9)sepia(.2)saturate(2)hue-rotate(190deg)}.segmented-control{background:var(--surface-muted);border:1px solid var(--glass-border);border-radius:var(--radius-sm);padding:4px;display:flex}.segmented-btn{color:var(--text-secondary);font-family:var(--font-sans);cursor:pointer;transition:var(--transition-fast);background:0 0;border:none;border-radius:4px;flex:1;padding:8px 12px;font-size:.85rem;font-weight:550}.segmented-btn:hover{color:var(--text-primary)}.segmented-btn.active{background:var(--surface-panel);color:var(--text-primary);box-shadow:0 2px 6px #0000001f}.timezone-search-container{position:relative}.timezone-chevron-btn{border-radius:6px;justify-content:center;align-items:center;width:28px;height:28px;display:inline-flex;position:absolute;right:8px}.timezone-chevron{transition:transform var(--transition-fast)}.timezone-chevron.open{transform:rotate(180deg)}.timezone-dropdown{background:var(--surface-popover);border:1px solid var(--border-strong);border-radius:var(--radius-sm);z-index:100;max-height:260px;box-shadow:var(--glass-shadow);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);margin-top:6px;position:absolute;top:100%;left:0;right:0;overflow-y:auto}.timezone-group-header{text-transform:uppercase;color:var(--accent-primary);letter-spacing:.05em;background:var(--surface-raised);border-bottom:1px solid var(--border-subtle);padding:8px 12px;font-size:.72rem;font-weight:800}.timezone-option{width:100%;color:var(--text-secondary);cursor:pointer;transition:var(--transition-fast);text-align:left;background:0 0;border:none;justify-content:space-between;align-items:center;gap:12px;padding:10px 14px;font-size:.85rem;display:flex}.timezone-option:hover{background:var(--surface-highlight);color:var(--text-primary)}.timezone-option.selected{background:color-mix(in srgb, var(--accent-primary) 20%, transparent);color:var(--text-primary);font-weight:600}.timezone-empty-state{color:var(--text-muted);padding:12px 14px;font-size:.85rem}.results-section{background:var(--surface-raised);border:1px solid var(--border-subtle);border-radius:var(--radius-md);flex-direction:column;justify-content:center;gap:20px;padding:24px;display:flex}.results-placeholder{color:var(--text-muted);text-align:center;flex-direction:column;align-items:center;gap:15px;padding:40px 0;display:flex}.placeholder-icon{opacity:.35}.result-card-heading{font-family:var(--font-display);text-transform:uppercase;letter-spacing:.06em;color:var(--text-secondary);border-bottom:1px solid var(--border-subtle);padding-bottom:6px;font-size:.82rem;font-weight:750}.big-result-wrapper{text-align:center;padding:15px 0}.big-result-val{font-family:var(--font-display);color:var(--text-primary);letter-spacing:0;text-shadow:0 0 20px color-mix(in srgb, var(--accent-primary) 20%, transparent);font-size:3.5rem;font-weight:800;line-height:1.1}.big-result-unit{color:var(--accent-primary);margin-left:6px;font-size:1.2rem;font-weight:550}.big-date-display{font-family:var(--font-display);color:var(--text-primary);text-align:center;font-size:2.2rem;font-weight:760;line-height:1.2}.date-meta-info{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:8px;display:flex}.meta-pill{background:var(--surface-muted);border:1px solid var(--border-subtle);color:var(--text-secondary);border-radius:50px;align-items:center;gap:4px;padding:4px 10px;font-size:.75rem;font-weight:550;display:inline-flex}.meta-pill.dst-active{color:var(--color-warning);background:#f59e0b1f;border-color:#f59e0b40}.stats-grid{grid-template-columns:repeat(2,1fr);gap:12px;display:grid}.stat-item,.dst-transition-item{background:var(--surface-muted);border:1px solid var(--border-subtle);border-radius:var(--radius-sm)}.stat-item{flex-direction:column;gap:4px;padding:12px 14px;display:flex}.stat-label{color:var(--text-secondary);font-size:.75rem}.stat-value{font-family:var(--font-display);font-size:1.1rem;font-weight:650}.stat-value.workday{color:var(--color-success)}.stat-value.weekend{color:var(--accent-secondary)}.range-visualizer{flex-direction:column;gap:10px;padding:12px 0 6px;display:flex}.timeline-track{border-radius:3px;height:6px;margin:15px 5px;position:relative}.timeline-progress{background:linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));border-radius:3px;height:100%;position:absolute}.timeline-node{background:var(--bg-secondary);border:3px solid var(--accent-primary);width:12px;height:12px;box-shadow:0 0 10px color-mix(in srgb, var(--accent-primary) 35%, transparent);border-radius:50%;position:absolute;top:50%;transform:translate(-50%,-50%)}.timeline-node.end{border-color:var(--accent-secondary)}.timeline-labels{color:var(--text-secondary);justify-content:space-between;font-size:.75rem;display:flex}.dst-auditor-card{border-radius:var(--radius-md);background:#f59e0b0d;border:1px solid #f59e0b2e;flex-direction:column;gap:12px;margin-top:10px;padding:16px;display:flex}.dst-auditor-header{font-family:var(--font-display);color:var(--color-warning);text-transform:uppercase;letter-spacing:.04em;align-items:center;gap:8px;font-size:.85rem;font-weight:750;display:flex}.dst-transitions-list{flex-direction:column;gap:10px;display:flex}.dst-transition-item{gap:12px;padding:12px;display:flex}.dst-transition-icon-wrapper{align-items:flex-start;padding-top:2px;display:flex}.dst-transition-details{flex-direction:column;gap:4px;display:flex}.dst-transition-meta{color:var(--text-primary);font-size:.8rem;font-weight:650}.dst-transition-desc,.dst-no-transition-text{color:var(--text-secondary);font-size:.78rem;line-height:1.45}.dst-no-transition-text{align-items:center;gap:6px;display:flex}.privacy-note{border-radius:var(--radius-md);color:var(--text-secondary);background:#10b9810f;border:1px solid #10b98129;align-items:center;gap:10px;padding:12px 16px;font-size:.84rem;line-height:1.45;display:flex}.privacy-note strong{color:var(--text-primary)}.privacy-note-icon{color:var(--color-success);flex-shrink:0}.app-footer{text-align:center;color:var(--text-muted);border-top:1px solid var(--border-subtle);flex-direction:column;align-items:center;gap:8px;margin-top:20px;padding:20px 0;font-size:.8rem;display:flex}.app-footer-line{flex-wrap:wrap;justify-content:center;align-items:center;gap:6px;line-height:1.5;display:flex}.footer-separator{color:var(--text-muted)}.footer-link{color:var(--text-primary);transition:var(--transition-fast);border-bottom:1px solid #0000;text-decoration:none}.footer-link:hover{color:var(--accent-primary);border-bottom-color:currentColor}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-5px)}}.fade-in{animation:.4s ease-out forwards fadeIn}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@media (width<=850px){.calculator-grid{grid-template-columns:1fr;gap:30px}}@media (width<=680px){.app-container{gap:22px;padding:28px 14px}.app-header-row{grid-template-columns:1fr;gap:14px}.logo-container,.header-actions{grid-column:1}.header-actions{justify-self:center}.tabs-container{justify-content:flex-start;width:100%;overflow-x:auto}.tab-btn{min-width:170px}.main-card{padding:20px}.stats-grid{grid-template-columns:1fr}.big-date-display{font-size:1.7rem}}