:root { --primary-color: #96c; --primary-light: #b9e; --primary-dark: #7d4eb0; --bg-color: #121212; --card-bg: #1e1e1e; --input-bg: #2c2c2c; --input-border: #444; --text-color: #fff; --text-muted: #aaa; --text-dim: #777; --shadow-color: rgba(0, 0, 0, 0.4); --success-color: #4caf50; --danger-color: #ff6b6b; --badge-size: 22px; --transition-speed: .3s}body.light-theme { --primary-color: #8a53c6; --primary-light: #7d3dba; --primary-dark: #662d91; --bg-color: #f8f9fa; --card-bg: #fff; --input-bg: #f0f0f5; --input-border: #ccc; --text-color: #333; --text-muted: #555; --text-dim: #777; --shadow-color: rgba(0, 0, 0, 0.1)}body.light-theme .calc-header { background: linear-gradient(135deg, var(--primary-color), var(--primary-dark))}* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif}body { background-color: var(--bg-color); color: var(--text-color); min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; line-height: 1.6; transition: background-color .3s ease, color .3s ease; position: relative; font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale}.calculator-container { width: 100%; max-width: 650px}.calculator-box { background-color: var(--card-bg); border-radius: 16px; overflow: hidden; box-shadow: 0 8px 30px var(--shadow-color); transition: all .3s ease; animation: fadeIn .5s ease-in-out}@keyframes fadeIn { from { opacity: 0; transform: translateY(10px) } to { opacity: 1; transform: translateY(0) }}.calc-header { background: linear-gradient(135deg, var(--primary-color), var(--primary-dark)); padding: 20px; display: flex; justify-content: space-between; align-items: center; position: relative}.app-title { font-size: 1rem; font-weight: 600; color: #fff; letter-spacing: .5px; margin: 0}.menu-toggle { display: none; background: rgba(255, 255, 255, 0.1); border: 0; color: #fff; width: 40px; height: 40px; border-radius: 50%; align-items: center; justify-content: center; cursor: pointer; transition: all .2s}.menu-toggle:hover { background: rgba(255, 255, 255, 0.2)}.mobile-menu { position: absolute; right: 0; top: 100%; background: var(--card-bg); border-radius: 0 0 10px 10px; box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2); padding: 20px; z-index: 100; width: 250px; display: none; transform: translateY(-10px); opacity: 0; transition: all .3s ease; border: 1px solid var(--input-border)}.mobile-menu .tools-controls { flex-direction: column; align-items: flex-start; gap: 20px}.mobile-menu .tools-controls>button { width: 100%; border-radius: 8px; height: auto; padding: 10px; justify-content: flex-start; gap: 10px; font-size: .95rem}body.light-theme .mobile-menu .tools-controls>button { background: rgba(0, 0, 0, 0.08); color: var(--text-color)}body.light-theme .mobile-menu .tools-controls>button:hover { background: rgba(0, 0, 0, 0.15)}.mobile-menu .tools-controls>button::after { content: attr(title); font-weight: 500}body.light-theme .mobile-menu { background: var(--card-bg); box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1); border: 1px solid rgba(0, 0, 0, 0.1)}.mobile-menu .setting-item { width: 100%; flex-direction: column; align-items: flex-start; gap: 10px}.mobile-menu .setting-item input { width: 100%; padding: 8px 12px}.mobile-menu.active { display: block; transform: translateY(0); opacity: 1}.tools-controls { display: flex; align-items: center; gap: 15px}.setting-item { display: flex; align-items: center; gap: 8px; color: #fff; font-size: .9rem}body.light-theme .setting-item,body.light-theme .mobile-menu .setting-item { color: var(--text-color);}.setting-item input { width: 60px; background-color: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 4px; color: #fff; padding: 4px 8px; font-size: .9rem}body.light-theme .setting-item input { background-color: rgba(0, 0, 0, 0.01); border: 1.5px solid rgba(255, 255, 255, 0.6); color: #fff}body.light-theme .setting-item .decimal-place { background-color: rgba(0, 0, 0, 0.08); border: 1px solid rgba(0, 0, 0, 0.5); color: #333;}@media(max-width:768px) { .desktop-controls { display: none } .menu-toggle { display: flex }}.view-toggle { background: rgba(255, 255, 255, 0.1); border: 0; color: #fff; width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all .2s}.view-toggle:hover { background: rgba(255, 255, 255, 0.2)}.view-toggle.active { background: rgba(255, 255, 255, 0.25)}.theme-toggle,.bookmark-btn,.share-btn,.help-btn { background: rgba(255, 255, 255, 0.1); border: 0; color: #fff; width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all .2s ease, transform .2s ease}.theme-toggle:hover,.bookmark-btn:hover,.share-btn:hover,.help-btn:hover { background: rgba(255, 255, 255, 0.2); transform: scale(1.05)}.calculator-section { padding: 25px}.section-title { background-color: rgba(var(--primary-color-rgb, 153, 102, 204), 0.1); padding: 14px 18px; margin: 0 0 20px 0; border-left: 4px solid var(--primary-color); border-radius: 0 8px 8px 0; display: flex; align-items: center; gap: 10px}body.light-theme .section-title { background-color: rgba(var(--primary-color-rgb, 153, 102, 204), 0.15)}.results-title { margin-top: 30px}h4 { color: var(--primary-light); font-size: 1.15rem; letter-spacing: .5px; font-weight: 600; display: flex; align-items: center; gap: 8px}.material-symbols-rounded { font-size: 20px}.instruction-icon { font-size: 16px; vertical-align: -3px; margin-right: 5px; color: var(--primary-color)}.instruction-text { font-size: .8rem; font-weight: normal; margin-left: 10px; color: var(--text-muted); display: inline-flex; align-items: center}.example-icon { font-size: 18px; vertical-align: -4px; margin-right: 5px}.calc-panel { display: flex; flex-direction: column; gap: 11px}.input-instructions { background-color: rgba(var(--primary-color-rgb, 153, 102, 204), 0.05); border-radius: 8px; padding: 12px 16px; margin-bottom: 15px; border: 1px dashed rgba(var(--primary-color-rgb, 153, 102, 204), 0.2); font-size: .95rem}.input-instructions p { display: flex; align-items: center; color: var(--primary-light); font-weight: 500}.input-tabs { display: flex; gap: 10px; margin-bottom: 20px; overflow-x: auto; padding-bottom: 5px; -ms-overflow-style: none; scrollbar-width: none}.input-tabs::-webkit-scrollbar { display: none}.input-tab { padding: 8px 14px; background: 0; border: 1px solid var(--input-border); border-radius: 20px; color: var(--text-muted); font-size: .9rem; cursor: pointer; transition: all .2s ease; white-space: nowrap}.input-tab:hover { border-color: var(--primary-color); color: var(--primary-light)}.input-tab.active { background-color: rgba(var(--primary-color-rgb, 153, 102, 204), 0.1); border-color: var(--primary-color); color: var(--primary-color)}.input-tab.has-value { border-color: var(--primary-color)}.input-tab.has-value::after { content: "✓"; margin-left: 5px; color: var(--primary-color)}.input-row { display: flex; gap: 20px; width: 100%}.input-group { flex: 1; margin-bottom: 5px; position: relative}.input-badge { display: inline-flex; align-items: center; justify-content: center; width: var(--badge-size); height: var(--badge-size); border-radius: 50%; background-color: var(--primary-color); color: white; font-size: .8rem; font-weight: 600; margin-left: 8px}label { display: flex; align-items: center; margin-bottom: 8px; color: var(--text-muted); font-weight: 500; font-size: .95rem}.decimal-label { color: #fff;}body.light-theme .decimal-label{ color: var(--text-color);}.optional-label { font-size: .8rem; font-weight: 400; color: var(--text-dim); font-style: italic; margin-left: 5px}.input-wrapper { position: relative}.input-icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--text-dim); font-size: 18px}.input-number { width: 100%; background-color: var(--input-bg); border: 1px solid var(--input-border); border-radius: 10px; color: var(--text-color); padding: 14px 40px 14px 40px; font-size: 1rem; transition: all .2s ease}.input-number::placeholder { color: var(--text-dim)}.input-number:focus { outline: 0; border-color: var(--primary-color); box-shadow: 0 0 0 2px rgba(var(--primary-color-rgb, 153, 102, 204), 0.25); background-color: var(--input-bg); transition: border-color .2s ease, box-shadow .2s ease, background-color .2s ease}.input-used { border-color: var(--primary-color) !important; background-color: rgba(var(--primary-color-rgb, 153, 102, 204), 0.05) !important}body.light-theme .input-used { background-color: rgba(var(--primary-color-rgb, 153, 102, 204), 0.08) !important}.clear-btn,.copy-btn { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); background: 0; border: 0; color: var(--text-dim); cursor: pointer; font-size: 1.2rem; display: flex; align-items: center; justify-content: center; transition: all .2s ease; width: 30px; height: 30px; border-radius: 50%}.clear-btn:hover { color: var(--danger-color); background-color: rgba(255, 107, 107, 0.1)}.copy-btn { color: var(--text-muted)}.copy-btn:hover { color: var(--primary-color); background-color: rgba(var(--primary-color-rgb, 153, 102, 204), 0.1)}.copy-btn.copied { color: var(--success-color)}.progress-container { width: 100%; height: 6px; background-color: rgba(var(--input-border-rgb, 68, 68, 68), 0.3); border-radius: 3px; margin-top: 5px}.progress-bar { height: 100%; background: linear-gradient(to right, var(--primary-color), var(--primary-dark)); border-radius: 3px; width: 0; transition: width .3s ease}.progress-complete { background: linear-gradient(to right, var(--success-color), #2E7D32)}.actions { width: 100%; display: flex; justify-content: space-between; gap: 5px; margin: 5px 0}.action-btn { border: 0; padding: 12px 18px; border-radius: 10px; cursor: pointer; display: flex; align-items: center; gap: 8px; font-size: .95rem; font-weight: 600; transition: all .25s ease; flex: 1; justify-content: center; position: relative; overflow: hidden}.action-btn::after { content: ''; position: absolute; width: 100%; height: 100%; top: 0; left: -100%; background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent); transition: left .5s ease}.action-btn:hover::after { left: 100%}.calculate-btn { background: linear-gradient(to right, var(--primary-color), var(--primary-dark)); color: white; box-shadow: 0 4px 12px rgba(var(--primary-color-rgb, 153, 102, 204), 0.3)}.calculate-btn:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 6px 15px rgba(var(--primary-color-rgb, 153, 102, 204), 0.4)}.calculate-btn:active:not(:disabled) { transform: translateY(0)}.calculate-btn:disabled { opacity: .5; cursor: not-allowed}.clear-all-btn { background: linear-gradient(to right, var(--primary-color), var(--primary-dark)); color: white; font-weight: 600; border: 0; box-shadow: 0 2px 8px rgba(var(--primary-color-rgb, 153, 102, 204), 0.3)}.clear-all-btn:hover { background: linear-gradient(to right, var(--primary-dark), var(--primary-color)); color: white; box-shadow: 0 4px 12px rgba(var(--primary-color-rgb, 153, 102, 204), 0.4); transform: translateY(-2px)}.example { width: 100%; border-left: 4px solid var(--primary-color); padding: 10px 20px; background-color: rgba(var(--primary-color-rgb, 153, 102, 204), 0.05); border-radius: 0 8px 8px 0; margin: 15px 0 25px}.example-header { display: flex; align-items: center; color: var(--primary-light); font-weight: 600; margin-bottom: 5px}.example-text { color: var(--text-muted); font-size: .95rem; line-height: 1.5}body.light-theme .example-text { font-weight: 500}.highlight { color: var(--primary-light); font-weight: 600}.positive { color: #4CAF50 !important}body.light-theme .positive { color: #2E7D32 !important}.negative { color: #F44336 !important}body.light-theme .negative { color: #C62828 !important}.results-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; margin-top: 20px}.full-width { grid-column: 1 / -1}.result-card { background-color: var(--input-bg); border-radius: 10px; padding: 16px; position: relative; border: 1px solid var(--input-border); transition: all .3s ease; transform: translateZ(0); height: 114px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis}body.light-theme .result-card { border: 1px solid rgba(0, 0, 0, 0.1)}.result-card:hover { border-color: var(--primary-color); box-shadow: 0 8px 16px rgba(var(--shadow-color-rgb, 0, 0, 0), 0.15); transform: translateY(-2px)}.result-card-header { display: flex; align-items: center; gap: 8px; color: var(--text-muted); font-size: .9rem; margin-bottom: 12px; position: relative}.result-icon { color: var(--primary-color)}.result-value { font-size: 1.5rem; font-weight: 700; color: var(--primary-light); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; transition: color var(--transition-speed) ease; animation: pulseText 1s ease-out}@keyframes pulseText { 0% { opacity: 0; transform: scale(0.95) } 100% { opacity: 1; transform: scale(1) }}.copy-btn { margin-left: auto; background: rgba(var(--primary-color-rgb, 153, 102, 204), 0.1); border-radius: 4px; width: 30px; height: 30px; transition: all .2s ease; transform: scale(0.9); position: relative}.copy-btn:hover { transform: scale(1); background: rgba(var(--primary-color-rgb, 153, 102, 204), 0.2)}.calculator-container.horizontal-layout { max-width: 1080px; width: 100%}.calculator-container.horizontal-layout .calculator-section { display: flex; gap: 25px; padding: 25px}.calculator-container.horizontal-layout .calc-panel,.calculator-container.horizontal-layout .results-panel { width: 48%; display: flex; flex-direction: column}.calculator-container.horizontal-layout .section-title { margin-top: 0}.calculator-container.horizontal-layout .results-grid { grid-template-columns: 1fr 1fr; margin-top: 20px}.calculator-container.horizontal-layout .example { margin-bottom: 0; margin-top: 0}.calculator-container.horizontal-layout .results-title { margin-top: 0}@media(max-width:1119px) { #layout-toggle, #mobile-layout-toggle { display: none !important } .calculator-container.horizontal-layout { max-width: 650px } .calculator-container.horizontal-layout .calculator-section { display: block } .calculator-container.horizontal-layout .calc-panel, .calculator-container.horizontal-layout .results-panel { width: 100% } .calculator-container.horizontal-layout .results-panel { margin-top: 0 } .results-panel { margin-top: 30px }}@media(max-width:768px) { .calculator-section { padding: 20px } .input-row { flex-direction: column; gap: 15px } .input-group { width: 100% } .results-grid { grid-template-columns: 1fr } h2 { font-size: 1.5rem } .input-tab { padding: 7px 12px; font-size: .85rem } .result-value { font-size: 1.5rem }}.modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.7); z-index: 1000; overflow-y: auto}.modal-content { position: relative; background-color: var(--card-bg); margin: 50px auto; padding: 25px; width: 100%; max-width: 650px; border-radius: 16px; box-shadow: 0 8px 30px var(--shadow-color)}.close-modal { position: absolute; top: 15px; right: 20px; font-size: 28px; font-weight: bold; background: 0; border: 0; color: var(--text-muted); cursor: pointer}.close-modal:hover { color: var(--primary-color)}.modal-title { color: var(--primary-light); font-size: 1.5rem; margin-bottom: 20px; display: flex; align-items: center; gap: 10px}.how-to-use-content { max-height: 70vh; overflow-y: auto; padding-right: 10px}.instruction-section { margin-bottom: 25px; padding-bottom: 20px; border-bottom: 1px solid rgba(var(--input-border-rgb, 68, 68, 68), 0.2)}.instruction-section:last-child { border-bottom: 0; padding-bottom: 0}.instruction-section h4 { margin-bottom: 10px; display: flex; align-items: center; gap: 8px}.instruction-visual { background-color: var(--input-bg); padding: 15px; border-radius: 10px; margin: 15px 0}.flow-steps { display: flex; flex-direction: column; gap: 15px}.flow-step { background-color: var(--card-bg); border-radius: 8px; padding: 15px; border: 1px solid var(--input-border)}.flow-step h5 { margin-top: 0; margin-bottom: 10px; color: var(--primary-light); font-size: 1rem}.flow-arrow { display: flex; justify-content: center; font-size: 24px; color: var(--primary-color); margin: 5px 0}.step-badge { display: inline-flex; justify-content: center; align-items: center; width: 20px; height: 20px; border-radius: 50%; background-color: var(--primary-color); color: white; font-size: .75rem; margin-left: 5px; font-weight: bold}.visual-grid { display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: auto auto; gap: 15px}.visual-input { background: var(--card-bg); padding: 10px 15px; border-radius: 8px; border: 1px solid var(--input-border)}.visual-input.entered { border-color: var(--primary-color); background-color: rgba(var(--primary-color-rgb, 153, 102, 204), 0.05)}.visual-input.auto { border-color: var(--success-color); background-color: rgba(76, 175, 80, 0.05)}@media(max-width:768px) { .modal-content { margin: 20px; padding: 20px; width: calc(100% - 40px) } .how-to-use-content { max-height: 80vh }}.seo-content { padding: 30px 20px; max-width: 900px; margin: 0 auto; color: var(--text-color)}.content-divider { height: 1px; background: linear-gradient(to right, transparent, var(--primary-color), transparent); margin: 20px auto 40px; width: 80%}.seo-content h1 { text-align: center; font-size: 2rem; margin-bottom: 30px; color: var(--primary-light)}.seo-section { margin-bottom: 40px}.seo-section h2 { color: var(--primary-light); font-size: 1.5rem; margin-bottom: 15px; border-bottom: 1px solid rgba(var(--primary-color-rgb), 0.3); padding-bottom: 10px}.seo-section h3 { color: var(--primary-light); font-size: 1.2rem; margin-bottom: 10px; margin-top: 20px}.calculation-types,.use-cases { display: grid; grid-template-columns: 1fr; gap: 20px; margin-top: 20px}.calc-type,.use-case { background-color: var(--card-bg); border-radius: 10px; padding: 20px; box-shadow: 0 3px 10px rgba(var(--shadow-color-rgb), 0.1)}li { list-style-type: none}.formula-box { background-color: var(--input-bg); padding: 10px 15px; border-radius: 8px; margin: 10px 0; font-family: monospace; font-size: .9rem; color: var(--primary-light); border: 1px solid var(--input-border)}body.light-theme .formula-box { border: 1px solid rgba(0, 0, 0, 0.1); color: var(--primary-dark)}.formula-box.large { padding: 15px 20px; font-size: 1.1rem}.feature-list p { margin-bottom: 10px; position: relative; padding-bottom: 5px}.use-case ul li { margin-bottom: 8px}.formula-explanation { background-color: var(--card-bg); padding: 20px; border-radius: 10px; margin-top: 15px}.example-calculation { background-color: var(--input-bg); padding: 15px; border-radius: 8px; margin: 15px 0; font-family: monospace}.calculation-visuals { display: grid; grid-template-columns: 1fr; gap: 20px; margin-top: 20px}.visual-block { background-color: var(--card-bg); border-radius: 10px; padding: 15px; text-align: center}.visual-formula { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 10px; margin: 15px 0}.formula-element { background-color: var(--input-bg); padding: 8px 12px; border-radius: 6px; font-weight: 500}.formula-element.result { background-color: var(--primary-color); color: white}.formula-operator { font-size: 1.2rem; font-weight: bold; color: var(--text-muted)}@media(max-width:768px) { .seo-content h1 { font-size: 1.5rem } .seo-section h2 { font-size: 1.3rem } .formula-box.large { font-size: .9rem; padding: 10px }}:root { --primary-color-rgb: 153, 102, 204; --danger-color-rgb: 255, 107, 107; --input-border-rgb: 68, 68, 68; --shadow-color-rgb: 0, 0, 0}