:root{--bg: #f0f4f8;--white: #ffffff;--sidebar: #1a2e4a;--sidebar-hover: #243d61;--sidebar-active: #1e56a0;--accent: #1e56a0;--accent-hover: #174186;--text: #0f1923;--text-muted: #4a5568;--text-dim: #718096;--border: #d1dce8;--green: #15803d;--green-bg: #dcfce7;--red: #b91c1c;--red-bg: #fee2e2;--orange: #c2410c;--orange-bg: #ffedd5;--shadow: 0 2px 8px rgba(0,0,0,.08);--shadow-lg: 0 8px 24px rgba(0,0,0,.12);--radius: 12px}*{margin:0;padding:0;box-sizing:border-box}body{background:var(--bg);color:var(--text);font-family:Inter,sans-serif;font-size:16px}.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#1a2e4a,#1e56a0);padding:20px}.auth-card{background:#fff;border-radius:20px;padding:40px;width:100%;max-width:440px;box-shadow:var(--shadow-lg)}.auth-logo{text-align:center;margin-bottom:28px}.auth-logo-name{font-size:28px;font-weight:800;color:var(--accent)}.auth-logo-sub{font-size:14px;color:var(--text-muted);margin-top:4px}.auth-title{font-size:22px;font-weight:800;margin-bottom:6px}.auth-sub{font-size:14px;color:var(--text-muted);margin-bottom:24px}.auth-form{display:flex;flex-direction:column;gap:16px}.form-group{display:flex;flex-direction:column;gap:6px}.form-label{font-size:14px;font-weight:700;color:var(--text-muted)}.form-input{border:2px solid var(--border);border-radius:10px;padding:12px 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var(--border)}.setup-wrap{min-height:100vh;background:var(--bg);display:flex;align-items:center;justify-content:center;padding:20px}.setup-card{background:#fff;border-radius:20px;padding:40px;width:100%;max-width:500px;box-shadow:var(--shadow-lg)}.app-layout{display:flex;min-height:100vh}.sidebar{width:260px;min-height:100vh;background:var(--sidebar);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100}.logo-area{padding:28px 24px 22px;border-bottom:1px solid rgba(255,255,255,.1)}.logo-name{font-size:22px;font-weight:800;color:#fff}.logo-prop{font-size:13px;color:#ffffff80;margin-top:4px;font-weight:500}.nav{padding:20px 0;flex:1}.nav-btn{display:flex;align-items:center;gap:14px;padding:16px 24px;cursor:pointer;color:#ffffffa6;font-size:16px;font-weight:600;transition:all .15s;border:none;border-left:4px solid 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.15s}.modal-close:hover{background:var(--red-bg);border-color:var(--red);color:var(--red)}.modal-body{padding:24px 28px}.modal-foot{padding:18px 28px;border-top:2px solid var(--border);display:flex;justify-content:flex-end;gap:12px;position:sticky;bottom:0;background:var(--white)}.form-section{margin-bottom:24px}.form-sec-title{font-size:14px;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.07em;margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid var(--border)}.form-grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}.pay-big-input{width:100%;border:3px solid var(--accent);border-radius:12px;padding:16px 20px;font-size:28px;font-weight:800;font-family:JetBrains Mono,monospace;color:var(--text);outline:none;text-align:center;margin:16px 0}.toast{position:fixed;bottom:28px;right:28px;z-index:400;color:#fff;border-radius:10px;padding:14px 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var(--border)}.bill-row-grid>div:first-child{flex-shrink:0;width:120px}.bill-row-grid>.month-cell{flex-shrink:0;width:36px}.bill-row-grid>.owed-label{flex-shrink:0;width:80px}.month-cell{height:32px;font-size:13px;border-radius:6px}.modal{width:96vw!important;max-height:88vh}.modal-body,.modal-head{padding:14px 16px}.modal-foot{padding:12px 16px}.form-grid2{grid-template-columns:1fr;gap:12px}.overdue-item{flex-direction:column;gap:6px;align-items:flex-start}.pay-big-input{font-size:22px;padding:12px 16px}.action-row{gap:4px}.icon-btn{width:34px;height:34px;font-size:14px}.flat-badge{width:38px;height:38px;font-size:14px}.admin-content{padding:16px}.admin-topbar{padding:0 16px}}