:root { --bg-primary: #ffffff; --bg-secondary: #f8f9fa; --text-primary: #1a1a1a; --text-secondary: #6c757d; --accent: #000000; --border: #e9ecef; --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.05); --input-bg: #ffffff; --transition-speed: 0.3s; } [data-theme="dark"] { --bg-primary: #121212; --bg-secondary: #1e1e1e; --text-primary: #f8f9fa; --text-secondary: #adb5bd; --accent: #ffffff; --border: #2d2d2d; --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.4); --input-bg: #1e1e1e; } * { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif; } body { background-color: var(--bg-primary); color: var(--text-primary); transition: background-color var(--transition-speed), color var(--transition-speed); line-height: 1.6; padding: 2rem; min-height: 100vh; overflow-y: auto; } header { max-width: 1200px; margin: 0 auto 3rem; display: flex; justify-content: space-between; align-items: center; } h1 { font-size: 2.5rem; font-weight: 800; letter-spacing: -0.02em; } #themeToggle { position: fixed; top: 1.5rem; right: 1.5rem; z-index: 1000; background-color: var(--bg-primary); border: 2px solid var(--accent); color: var(--accent); padding: 0.5rem 1.25rem; cursor: pointer; border-radius: 50px; font-weight: 700; font-size: 0.85rem; transition: all var(--transition-speed); display: flex; align-items: center; gap: 0.5rem; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1); } #themeToggle:hover { background-color: var(--accent); color: var(--bg-primary); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15); } .main-container { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; } .card { background-color: var(--bg-secondary); border: 1px solid var(--border); border-radius: 16px; padding: 1.5rem; transition: transform var(--transition-speed), box-shadow var(--transition-speed), border-color var(--transition-speed); display: flex; flex-direction: column; gap: 1rem; position: relative; } .card:hover { transform: translateY(-4px); box-shadow: var(--card-shadow); border-color: var(--accent); } .card h2 { font-size: 1.25rem; font-weight: 700; color: var(--text-primary); margin-bottom: 0; } .card-desc { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 0.5rem; font-weight: 500; } .input-group { display: flex; flex-direction: column; gap: 0.5rem; } input, select { background-color: var(--input-bg); border: 1px solid var(--border); color: var(--text-primary); padding: 0.75rem 1rem; border-radius: 8px; font-size: 1rem; outline: none; transition: border-color var(--transition-speed), box-shadow var(--transition-speed); } input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1); } [data-theme="dark"] input:focus, [data-theme="dark"] select:focus { box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1); } .result-container { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border); text-align: right; } .result-value { font-size: 1.5rem; font-weight: 800; color: var(--accent); } .result-label { font-size: 0.8rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.25rem; } ::-webkit-scrollbar { width: 8px; } ::-webkit-scrollbar-track { background: var(--bg-primary); } ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; } ::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); } @media (max-width: 600px) { body { padding: 1rem; } header { flex-direction: column; gap: 1rem; text-align: center; margin-bottom: 2rem; } h1 { font-size: 2rem; } }