/* ===========================================
   MoneyFlow — Notion-inspired Finance Tracker
   =========================================== */

:root {
    --bg: #f7f7f5;
    --surface: #ffffff;
    --surface-2: #f1f1ef;
    --border: #e9e9e7;
    --text: #1a1a18;
    --text-2: #6b6b68;
    --text-3: #9b9b97;
    --accent: #4f6ef7;
    --accent-hover: #3d5ce5;
    --accent-light: rgba(79, 110, 247, 0.1);
    --green: #22c55e;
    --green-light: rgba(34, 197, 94, 0.1);
    --red: #ef4444;
    --red-light: rgba(239, 68, 68, 0.1);
    --orange: #f97316;
    --orange-light: rgba(249, 115, 22, 0.1);
    --radius: 10px;
    --radius-lg: 14px;
    --radius-sm: 6px;
    --shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,.08);
    --sidebar-w: 230px;
    --bottom-nav-h: 70px;
    --font: 'Inter', system-ui, -apple-system, sans-serif;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:15px}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit}
ul{list-style:none}
input,select,textarea,button{font:inherit}

.app-shell{display:flex;min-height:100vh}

/* Sidebar */
.sidebar{width:var(--sidebar-w);background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100;overflow-y:auto;padding:1.5rem 0 1rem}
.sidebar-logo{display:flex;align-items:center;gap:.5rem;padding:0 1.25rem .75rem;border-bottom:1px solid var(--border);margin-bottom:.75rem}
.logo-icon{font-size:1.5rem}.logo-text{font-weight:700;font-size:1.05rem;letter-spacing:-.3px}
.sidebar-month{padding:.25rem 1.25rem .75rem}
.month-badge{font-size:.75rem;font-weight:600;color:var(--text-2);text-transform:uppercase;letter-spacing:.05em}
.sidebar-nav{flex:1;padding:0 .5rem}
.nav-item{display:flex;align-items:center;gap:.6rem;padding:.5rem .75rem;border-radius:var(--radius-sm);color:var(--text-2);font-size:.9rem;font-weight:450;transition:background .15s,color .15s;margin-bottom:2px}
.nav-item:hover{background:var(--surface-2);color:var(--text)}
.nav-item.active{background:var(--accent-light);color:var(--accent);font-weight:600}
.nav-icon{font-size:1rem;width:1.25rem;text-align:center}
.sidebar-footer{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1.25rem 0;border-top:1px solid var(--border);margin-top:.5rem}
.user-chip{display:flex;align-items:center;gap:.5rem;overflow:hidden}
.user-avatar{width:28px;height:28px;border-radius:50%;background:var(--user-color,var(--accent));color:#fff;font-size:.75rem;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.user-name{font-size:.85rem;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.logout-btn{color:var(--text-3);font-size:1.2rem;transition:color .15s;padding:.25rem}
.logout-btn:hover{color:var(--red)}

/* Main content */
.main-content{flex:1;margin-left:var(--sidebar-w);min-height:100vh;padding-bottom:2rem}
.content-inner{max-width:900px;margin:0 auto;padding:2rem}

/* Bottom nav */
.bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;height:var(--bottom-nav-h);background:var(--surface);border-top:1px solid var(--border);z-index:200;align-items:center;justify-content:space-around;padding:0 .5rem;box-shadow:0 -2px 10px rgba(0,0,0,.06)}
.bn-item{display:flex;flex-direction:column;align-items:center;gap:2px;color:var(--text-3);font-size:.7rem;font-weight:500;flex:1;transition:color .15s}
.bn-item.active{color:var(--accent)}
.bn-icon{font-size:1.3rem}
.bn-fab{position:relative;flex:0 0 3.5rem}
.bn-fab-inner{width:3rem;height:3rem;background:var(--accent);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.6rem;font-weight:300;box-shadow:0 4px 12px rgba(79,110,247,.4)}

/* Auth */
.auth-shell{min-height:100vh;background:var(--bg);display:flex;align-items:center;justify-content:center;padding:1.5rem}
.auth-card{width:100%;max-width:380px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2.5rem 2rem;box-shadow:var(--shadow-md)}
.auth-logo{text-align:center;margin-bottom:2rem}
.logo-icon-lg{font-size:2.5rem}
.auth-title{font-size:1.5rem;font-weight:700;margin-top:.25rem}
.auth-subtitle{color:var(--text-2);font-size:.9rem;margin-top:.25rem}

/* Page header */
.page-header{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem;margin-bottom:1.75rem}
.page-title{font-size:1.6rem;font-weight:700;letter-spacing:-.4px}
.page-sub{color:var(--text-2);font-size:.9rem;margin-top:.2rem}

/* Flashes */
.flash{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1rem;border-radius:var(--radius-sm);margin-bottom:1rem;font-size:.9rem;font-weight:500}
.flash--success{background:var(--green-light);color:#15803d;border:1px solid rgba(34,197,94,.2)}
.flash--danger,.flash--error{background:var(--red-light);color:#b91c1c;border:1px solid rgba(239,68,68,.2)}
.flash-close{background:none;border:none;cursor:pointer;font-size:1.2rem;opacity:.6;padding:0;line-height:1}

/* Notice banner */
.notice-banner{display:flex;align-items:center;gap:1rem;background:linear-gradient(135deg,rgba(79,110,247,.07),rgba(79,110,247,.03));border:1px solid rgba(79,110,247,.2);border-radius:var(--radius-lg);padding:1.25rem 1.5rem;margin-bottom:1.5rem}
.notice-emoji{font-size:1.5rem}
.notice-banner strong{display:block;font-size:.95rem}
.notice-banner p{font-size:.85rem;color:var(--text-2);margin-top:.15rem}
.notice-banner .btn{margin-left:auto;white-space:nowrap;flex-shrink:0}

/* Stats */
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-bottom:1.75rem}
.stats-grid--2{grid-template-columns:repeat(2,1fr)}
.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.25rem 1.5rem;box-shadow:var(--shadow)}
.stat-card--income{border-left:3px solid var(--green)}
.stat-card--expense{border-left:3px solid var(--orange)}
.stat-card--positive{border-left:3px solid var(--accent)}
.stat-card--negative{border-left:3px solid var(--red)}
.stat-card--networth{border-left:3px solid var(--accent);background:var(--accent-light)}
.stat-label{font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-2)}
.stat-value{font-size:1.8rem;font-weight:700;letter-spacing:-.5px;margin-top:.15rem}
.stat-meta{font-size:.8rem;color:var(--text-2);margin-top:.2rem}

/* Sections */
.section{margin-bottom:1.75rem}
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:.75rem}
.section-title{font-size:1rem;font-weight:600}
.link-sm{font-size:.85rem;color:var(--accent);font-weight:500}

/* Cards */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow);overflow:hidden}
.empty-card,.empty-state{background:var(--surface);border:1px dashed var(--border);border-radius:var(--radius-lg);padding:2.5rem;text-align:center;color:var(--text-2)}
.empty-card p{margin-bottom:.75rem}

/* Item list */
.item-row{display:flex;align-items:center;justify-content:space-between;padding:.85rem 1rem;border-bottom:1px solid var(--border);gap:1rem;transition:background .1s}
.item-row:last-child{border-bottom:none}
.item-row:hover{background:var(--surface-2)}
.item-row--muted{opacity:.6}
.item-left{display:flex;align-items:center;gap:.75rem;overflow:hidden;min-width:0}
.item-right{display:flex;align-items:center;gap:.5rem;flex-shrink:0}
.item-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex-shrink:0}
.item-dot--bill{background:var(--orange)}
.item-name{font-weight:500;font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.item-meta{font-size:.78rem;color:var(--text-2);margin-top:1px}
.item-amount{font-weight:600;font-size:.9rem;white-space:nowrap}
.item-tags{display:flex;gap:.3rem;flex-wrap:wrap;margin-top:.2rem}
.line-through{text-decoration:line-through}

/* Tags */
.tag{display:inline-flex;align-items:center;padding:.15rem .45rem;border-radius:100px;font-size:.72rem;font-weight:500;background:var(--surface-2);color:var(--text-2);border:1px solid var(--border)}
.tag--category{background:var(--accent-light);color:var(--accent);border-color:transparent}
.tag--recurring{background:var(--green-light);color:#15803d;border-color:transparent}
.tag--joint{background:var(--orange-light);color:#c2410c;border-color:transparent}
.tag--split{background:rgba(168,85,247,.1);color:#7e22ce;border-color:transparent}
.tag--personal{background:var(--surface-2)}

/* Category bars */
.category-bars{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1rem 1.25rem;box-shadow:var(--shadow)}
.cat-bar-row{display:flex;align-items:center;gap:.75rem;margin-bottom:.6rem}
.cat-bar-row:last-child{margin-bottom:0}
.cat-name{min-width:100px;font-size:.82rem;font-weight:500;color:var(--text-2)}
.cat-bar-track{flex:1;height:6px;background:var(--surface-2);border-radius:100px;overflow:hidden}
.cat-bar-fill{height:100%;background:var(--accent);border-radius:100px;transition:width .5s ease}
.cat-amount{min-width:70px;text-align:right;font-size:.82rem;font-weight:600}

/* Two-col grid */
.two-col-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-bottom:1.75rem}

/* Goals mini */
.goals-mini-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:.75rem}
.goal-mini-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1rem;box-shadow:var(--shadow)}
.goal-mini-header{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:.5rem}
.goal-mini-name{font-size:.85rem;font-weight:600}
.goal-mini-pct{font-size:.8rem;font-weight:700;color:var(--accent)}
.goal-mini-amounts{display:flex;justify-content:space-between;font-size:.8rem;margin-top:.35rem;font-weight:500}
.goal-mini-target{color:var(--text-2)}

/* Progress bars */
.progress-track{height:8px;background:var(--surface-2);border-radius:100px;overflow:hidden;margin:.5rem 0}
.progress-track--lg{height:10px}
.progress-fill{height:100%;background:var(--green);border-radius:100px;transition:width .6s ease}
.progress-fill--debt{background:var(--accent)}

/* Goal cards */
.goals-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.25rem}
.goal-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.25rem;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:.6rem;border-top:3px solid var(--goal-color,var(--green))}
.goal-card--debt{border-top-color:var(--red)}
.goal-card-header{display:flex;justify-content:space-between;align-items:flex-start}
.goal-name{font-size:1rem;font-weight:600}
.goal-desc{font-size:.83rem;color:var(--text-2)}
.goal-pct{font-size:.85rem;font-weight:700;color:var(--accent)}
.goal-pct--done{color:var(--green)}
.goal-amounts{display:flex;justify-content:space-between;align-items:center;font-size:.85rem}
.goal-saved,.debt-remaining{font-weight:700;font-size:1.05rem}
.goal-target{color:var(--text-2)}
.goal-deadline{font-size:.8rem;color:var(--text-2)}
.debt-meta{display:flex;flex-wrap:wrap;gap:.35rem}

/* History */
.history-details{margin-top:.25rem}
.history-details summary{font-size:.82rem;color:var(--text-2);cursor:pointer;padding:.25rem 0}
.history-list{margin-top:.5rem;display:flex;flex-direction:column;gap:.3rem}
.history-item{display:flex;align-items:center;gap:.5rem;font-size:.8rem}
.history-date{color:var(--text-2);min-width:50px}
.history-user{font-weight:500}
.history-amount{font-weight:600;margin-left:auto}
.history-note{color:var(--text-2);font-style:italic}

/* Collapsible */
.deposit-form{margin-top:.25rem}
.collapsible-content{display:none;margin-top:.5rem}
.collapsible-content.is-open{display:block}
.inline-form{display:flex;flex-wrap:wrap;gap:.4rem;align-items:flex-end}

/* Day group */
.day-group{margin-bottom:1.25rem}
.day-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem;padding:0 .25rem}
.day-label{font-size:.85rem;font-weight:600;color:var(--text-2)}
.day-total{font-size:.85rem;font-weight:700}

/* Scroll chips */
.scroll-chips{display:flex;gap:.5rem;overflow-x:auto;padding-bottom:.5rem;margin-bottom:1.5rem;scrollbar-width:none}
.scroll-chips::-webkit-scrollbar{display:none}
.chip{white-space:nowrap;background:var(--surface);border:1px solid var(--border);border-radius:100px;padding:.35rem .85rem;font-size:.8rem;color:var(--text-2);flex-shrink:0}
.chip strong{color:var(--text)}

/* Tabs */
.tabs{margin-bottom:1.5rem}
.tabs-bar{display:flex;gap:.25rem;border-bottom:1px solid var(--border);margin-bottom:1rem}
.tab-btn{padding:.5rem .85rem;border:none;background:none;font-size:.875rem;font-weight:500;color:var(--text-2);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px;transition:color .15s,border-color .15s}
.tab-btn.active,.tab-btn:hover{color:var(--accent);border-bottom-color:var(--accent)}
.tab-panel{display:none}
.tab-panel.active{display:block}

/* Net worth timeline */
.nw-timeline{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1rem 1.25rem;box-shadow:var(--shadow)}
.nw-bar-row{display:flex;align-items:center;gap:.75rem;margin-bottom:.6rem}
.nw-bar-row:last-child{margin-bottom:0}
.nw-date{min-width:65px;font-size:.8rem;color:var(--text-2);font-weight:500}
.nw-bar-track{flex:1;height:8px;background:var(--surface-2);border-radius:100px;overflow:hidden}
.nw-bar-fill{height:100%;background:var(--accent);border-radius:100px}
.nw-amount{min-width:80px;text-align:right;font-size:.82rem;font-weight:600}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:.4rem;padding:.525rem 1rem;border-radius:var(--radius-sm);font-size:.875rem;font-weight:600;cursor:pointer;border:1.5px solid transparent;transition:background .15s,box-shadow .15s;white-space:nowrap}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-hover);box-shadow:0 2px 8px rgba(79,110,247,.3)}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--text-2)}
.btn-ghost:hover{background:var(--surface-2);color:var(--text)}
.btn-outline{background:transparent;border-color:var(--accent);color:var(--accent)}
.btn-outline:hover{background:var(--accent-light)}
.btn-accent{background:rgba(79,110,247,.12);color:var(--accent);border-color:rgba(79,110,247,.2)}
.btn-sm{padding:.35rem .7rem;font-size:.8rem}
.btn-xs{padding:.2rem .5rem;font-size:.75rem}
.btn-full{width:100%;justify-content:center;padding-top:.75rem;padding-bottom:.75rem}
.btn-ghost-danger{background:none;border:none;color:var(--text-3);cursor:pointer;font-size:.78rem}
.btn-ghost-danger:hover{color:var(--red)}
.btn-icon{width:24px;height:24px;border-radius:4px;border:none;background:transparent;color:var(--text-3);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;font-size:1.1rem;transition:background .12s,color .12s}
.btn-icon--danger:hover{background:var(--red-light);color:var(--red)}

/* Check circles */
.check-circle{width:22px;height:22px;border-radius:50%;border:1.5px solid var(--border);background:transparent;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;font-size:.75rem;color:transparent;flex-shrink:0;transition:all .15s}
.check-circle:hover{border-color:var(--green)}
.check-circle--done{background:var(--green);border-color:var(--green);color:#fff}

/* Form card */
.form-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow);max-width:600px}

/* Form */
.notion-form{display:flex;flex-direction:column;gap:1.25rem}
.form-group{display:flex;flex-direction:column;gap:.4rem}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.form-row--toggles{grid-template-columns:1fr 1fr;align-items:center;gap:1rem}
.form-label{font-size:.82rem;font-weight:600;color:var(--text-2);letter-spacing:.01em}
.form-optional{font-weight:400;color:var(--text-3)}
.form-input{padding:.6rem .85rem;border:1.5px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);font-size:.9rem;transition:border-color .15s,box-shadow .15s;outline:none;width:100%}
.form-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-light)}
.form-input--lg{font-size:1.5rem;font-weight:700;padding:.6rem .85rem}
.form-input--xl{font-size:2rem;font-weight:700;padding:.75rem;text-align:center}
.form-input--sm{padding:.35rem .6rem;font-size:.82rem;max-width:120px}
.form-textarea{resize:vertical;min-height:80px}
.notion-text{border-color:transparent;background:transparent;padding-left:0;font-size:1rem}
.notion-text:focus{border-color:transparent;box-shadow:none;border-bottom:1.5px solid var(--accent);border-radius:0}

/* Pill select */
.pill-select{display:flex;flex-wrap:wrap;gap:.4rem}
.pill-radio{position:absolute;opacity:0;pointer-events:none}
.pill{display:inline-flex;align-items:center;gap:.3rem;padding:.35rem .75rem;border-radius:100px;border:1.5px solid var(--border);font-size:.82rem;font-weight:500;cursor:pointer;transition:all .15s;background:var(--surface);color:var(--text-2)}
.pill:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-light)}
.pill-radio:checked+.pill{border-color:var(--accent);background:var(--accent-light);color:var(--accent);font-weight:600}

/* Toggle */
.form-toggle{justify-content:center}
.toggle-label{display:flex;align-items:center;gap:.6rem;cursor:pointer;font-size:.875rem;font-weight:500}
.toggle-input{position:absolute;opacity:0;pointer-events:none}
.toggle-switch{width:38px;height:22px;background:var(--border);border-radius:100px;position:relative;flex-shrink:0;transition:background .2s}
.toggle-switch::after{content:'';position:absolute;top:3px;left:3px;width:16px;height:16px;background:#fff;border-radius:50%;transition:left .2s;box-shadow:0 1px 3px rgba(0,0,0,.2)}
.toggle-input:checked~.toggle-switch{background:var(--accent)}
.toggle-input:checked~.toggle-switch::after{left:19px}

/* Form check */
.form-check{flex-direction:row;align-items:center;gap:.5rem}
.check-input{width:16px;height:16px;cursor:pointer;accent-color:var(--accent)}
.check-label{font-size:.875rem}

/* Color swatches */
.color-swatches{display:flex;gap:.5rem;flex-wrap:wrap}
.color-swatch{width:28px;height:28px;border-radius:50%;cursor:pointer;transition:transform .15s,box-shadow .15s;display:flex;align-items:center;justify-content:center}
.color-swatch:has(input:checked){transform:scale(1.2);box-shadow:0 0 0 2px #fff,0 0 0 4px currentColor}
.color-swatch input{position:absolute;opacity:0}

/* SR-only */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}

/* Auth form */
.auth-form{display:flex;flex-direction:column;gap:1rem}

/* RESPONSIVE */
@media(max-width:768px){
    .sidebar{display:none}
    .main-content{margin-left:0;padding-bottom:calc(var(--bottom-nav-h) + 1rem)}
    .content-inner{padding:1.25rem 1rem}
    .bottom-nav{display:flex}
    .stats-grid{grid-template-columns:1fr 1fr}
    .stats-grid .stat-card:last-child{grid-column:span 2}
    .two-col-grid{grid-template-columns:1fr}
    .goals-grid{grid-template-columns:1fr}
    .form-row{grid-template-columns:1fr}
    .form-card{padding:1.25rem}
    .page-title{font-size:1.3rem}
    .stat-value{font-size:1.4rem}
}
@media(max-width:480px){
    .stats-grid{grid-template-columns:1fr}
    .stats-grid .stat-card:last-child{grid-column:unset}
    .notice-banner{flex-wrap:wrap}
    .notice-banner .btn{width:100%;justify-content:center}
}