@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Fraunces:opsz,wght@9..144,650;9..144,750&display=swap');

/* Default Light Theme (Zen) */
:root {
  --ink: #19332c;
  --forest: #173f35;
  --forest-2: #245849;
  --paper: #fbf7ef;
  --canvas: #f3eadb;
  --line: #dfd2be;
  --muted: #746f64;
  --rust: #aa4f32;
  --rust-soft: #f4ded3;
  --sage: #dce9da;
  --gold: #d9b75f;
  --white: #fffdf8;
  --shadow: 0 12px 34px rgba(62,48,31,.09);
}

/* Eye-Soothing Dark Theme */
[data-theme="dark"] {
  --ink: #f3eadb;
  --forest: #43a388;
  --forest-2: #56c2a3;
  --paper: #1a2320;
  --canvas: #101614;
  --line: #2b3934;
  --muted: #8c9c96;
  --rust: #e27c5e;
  --rust-soft: #3d2118;
  --sage: #143026;
  --gold: #d9b75f;
  --white: #1a2320;
  --shadow: 0 4px 20px rgba(0,0,0,0.4);
}

*{box-sizing:border-box;margin:0;padding:0}
html{background:var(--canvas)}
body{
  min-height:100vh;
  background:radial-gradient(circle at 90% 5%,rgba(217,183,95,.12),transparent 25rem),var(--canvas);
  color:var(--ink);
  font-family:"DM Sans",sans-serif;
  padding-bottom:calc(50px + env(safe-area-inset-bottom));
  -webkit-font-smoothing:antialiased;
  transition: background 0.3s, color 0.3s;
}
body.modal-open{overflow:hidden}
.hidden{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

.fade-in{animation:fadeIn .28s ease-out}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* Header with Logo Support & Offline Badge */
.app-header{
  max-width:540px;margin:auto;
  padding:calc(20px + env(safe-area-inset-top)) 18px 10px;
  display:flex;align-items:center;gap:12px;
}
.brand-mark{
  display:grid;place-items:center;width:42px;height:42px;border-radius:12px;
  background:var(--forest);color:var(--paper);font-family:"Fraunces",serif;font-size:.9rem;
}
.header-logo{
  width:42px;height:42px;border-radius:12px;object-fit:cover;border:1px solid var(--line);
}
.eyebrow{text-transform:uppercase;letter-spacing:.13em;color:var(--rust);font-size:.62rem;font-weight:700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 180px;}
.app-header h1,.section-heading h2,.modal-content h3,.customer-balance-card h2,.overdue-header h2,.history-title{
  font-family:"Fraunces",serif;
}
.app-header h1{font-size:1.35rem;line-height:1.05; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 200px; display: flex; align-items: center;}
.offline-badge {
  font-size: 0.65rem; background: var(--rust); color: #fff; font-family: "DM Sans", sans-serif;
  padding: 3px 8px; border-radius: 999px; margin-left: 8px; font-weight: bold; text-transform: uppercase; letter-spacing: 0.05em;
}

#app-container{max-width:540px;margin:0 auto;padding:20px 18px}

/* ===== DASHBOARD ===== */
.summary-card,.dashboard-card{
  position:relative;overflow:hidden;
  background:var(--forest);color:var(--white);
  border-radius:26px;padding:24px 22px 20px;
  box-shadow:0 16px 32px rgba(0,0,0,.15);
  margin-bottom:16px;text-align:left;
  transition: background 0.3s;
}
[data-theme="dark"] .summary-card, [data-theme="dark"] .dashboard-card {
  background: #16241f; /* Darker green for dark mode */
}
[data-theme="dark"] .summary-card h2, [data-theme="dark"] #total-shop-debt, [data-theme="dark"] .stat-block strong, [data-theme="dark"] .summary-meta strong {
  color: #fff;
}
.summary-card:after{
  content:"";position:absolute;width:170px;height:170px;
  border:34px solid rgba(217,183,95,.12);border-radius:50%;
  right:-70px;top:-76px;pointer-events:none;
}
.summary-label{
  font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;
  color:#c9d9d1;font-weight:600;
}
.today-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:12px;
  margin:14px 0 18px;
}
.stat-block{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.1);
  border-radius:16px;padding:14px 14px 12px;
}
.stat-label{
  display:block;font-size:.68rem;text-transform:uppercase;
  letter-spacing:.06em;color:#c9d9d1;margin-bottom:6px;font-weight:600;
}
.stat-block strong{
  font-family:"Fraunces",serif;font-size:1.35rem;font-weight:750;
  color:var(--white);letter-spacing:-.02em;
}
.stat-block strong.stat-positive{color:#b8e0c8}
.summary-outstanding{
  padding-top:16px;border-top:1px solid rgba(255,255,255,.14);
}
.summary-outstanding .summary-label{display:block;margin-bottom:4px}
.summary-card h2,#total-shop-debt{
  font-family:"Fraunces",serif;font-size:2.35rem;margin:0;
  letter-spacing:-.025em;color:var(--white);
}
.summary-meta{
  display:flex;gap:22px;padding-top:14px;margin-top:14px;
  border-top:1px solid rgba(255,255,255,.14);
  color:#c9d9d1;font-size:.78rem;
}
.summary-meta strong{color:var(--white);font-size:.95rem;margin-right:4px}

/* ===== OVERDUE ===== */
.overdue-section{
  background:var(--paper);
  border:1px solid var(--rust-soft);
  border-radius:20px;padding:16px;margin-bottom:18px;
  box-shadow:0 4px 16px rgba(170,79,50,.06);
}
.overdue-header{
  display:flex;align-items:center;justify-content:space-between;
  margin-bottom:12px;
}
.overdue-header h2{font-size:1.15rem;color:var(--rust)}
.overdue-badge{
  background:var(--rust-soft);color:var(--rust);
  font-size:.75rem;font-weight:700;padding:4px 10px;border-radius:999px;
}
.overdue-list{display:flex;flex-direction:column;gap:8px}
.overdue-item{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  width:100%;text-align:left;font:inherit;color:inherit;cursor:pointer;
  background:var(--canvas);border:1px solid var(--line);
  border-radius:14px;padding:12px 14px;
  transition:transform .15s,border-color .15s;
}
.overdue-item:hover{transform:translateY(-1px);border-color:var(--gold)}
.overdue-item-info h4{font-size:.95rem;font-weight:700;color:var(--ink)}
.overdue-item-info p{font-size:.72rem;color:var(--rust);margin-top:3px;font-weight:600}
.overdue-item-amt{
  font-family:"Fraunces",serif;font-size:1.05rem;font-weight:750;color:var(--rust);
  white-space:nowrap;
}

/* Controls */
.controls-section{display:grid;grid-template-columns:1fr auto;gap:10px;margin-bottom:28px}
.search-wrapper{position:relative}
.search-icon{position:absolute;left:15px;top:50%;transform:translateY(-54%);font-size:1.35rem;color:var(--muted)}
.search-wrapper input,.form-group input,select{
  width:100%;font:inherit;color:var(--ink);background:var(--paper);border:1px solid var(--line);outline:none;
}
.search-wrapper input{height:50px;border-radius:15px;padding:0 15px 0 42px}
.search-wrapper input:focus,.form-group input:focus,select:focus{
  border-color:var(--forest-2);box-shadow:0 0 0 3px rgba(36,88,73,.14);
}

.btn{
  border:0;border-radius:15px;padding:13px 19px;
  font:600 .92rem "DM Sans",sans-serif;cursor:pointer;
  transition:transform .15s,box-shadow .15s,background .15s;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--forest);color:var(--white);box-shadow:0 6px 14px rgba(0,0,0,.15)}
[data-theme="dark"] .btn-primary { color: #101614; }
.controls-section .btn{width:auto;white-space:nowrap}
.btn-text{background:transparent;border:0;color:var(--forest-2);font:600 .9rem "DM Sans",sans-serif;cursor:pointer;padding:9px 2px}
.btn:focus-visible,.btn-text:focus-visible,.customer-card:focus-visible,.btn-icon:focus-visible,.overdue-item:focus-visible{
  outline:3px solid var(--gold);outline-offset:3px;
}

.section-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.section-heading h2{font-size:1.35rem}
.section-heading select{width:auto;border:0;background:var(--paper);font-size:.8rem;color:var(--ink);padding:7px;border-radius:8px;}

/* Customer List */
.customer-list{display:flex;flex-direction:column;gap:10px}
.customer-card{
  width:100%;font:inherit;color:inherit;border:1px solid var(--line);
  background:var(--paper);padding:17px 16px;border-radius:18px;
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:13px;
  text-align:left;cursor:pointer;box-shadow:0 3px 12px rgba(0,0,0,.02);
  transition:transform .18s,border-color .18s,box-shadow .18s;
}
.customer-card:hover{transform:translateY(-2px);border-color:var(--gold);box-shadow:var(--shadow)}
.customer-avatar{
  width:40px;height:40px;border-radius:13px;display:grid;place-items:center;
  background:var(--sage);color:var(--forest);font-family:"Fraunces",serif;font-weight:750;
}
.customer-info h4{font-size:1rem;font-weight:700}
.customer-info p{font-size:.74rem;color:var(--muted);margin-top:3px}
.customer-balance{text-align:right;font-family:"Fraunces",serif;font-size:1.08rem;font-weight:750;color:var(--rust)}
.customer-balance small{display:block;font-family:"DM Sans",sans-serif;font-size:.64rem;color:var(--muted);font-weight:500;margin-top:2px}
.customer-balance.settled{color:var(--forest-2)}

.view-header{margin-bottom:14px}
.customer-balance-card, .settings-card{
  background:var(--paper);padding:24px;border:1px solid var(--line);
  border-radius:24px;margin-bottom:16px;box-shadow:var(--shadow);
}
.customer-balance-card h2{font-size:1.5rem}
.customer-balance-card>p{font-size:.82rem;color:var(--muted);margin-top:4px}
.balance-display{
  margin-top:22px;padding-top:18px;border-top:1px dashed var(--line);
  display:flex;justify-content:space-between;align-items:center;
}
.balance-display h3{font-family:"Fraunces",serif;font-size:2.1rem;color:var(--rust)}
.balance-display h3.settled{color:var(--forest-2)}
.balance-badge{padding:6px 11px;border-radius:999px;font-size:.7rem;font-weight:700;background:var(--rust-soft);color:var(--rust)}
.balance-badge.settled{background:var(--sage);color:var(--forest)}

.action-buttons-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px}
.action-buttons-grid .btn{display:flex;flex-direction:column;align-items:flex-start;text-align:left}
.action-buttons-grid small{opacity:.7;font-weight:500;margin-top:2px}
.btn-danger{background:var(--rust-soft);color:var(--rust)}
.btn-success{background:var(--sage);color:var(--forest)}
.btn-whatsapp{width:100%;background:#267b55;color:white;margin-bottom:10px}
.btn-outline{width:100%;background:transparent;color:var(--muted);border:1px solid var(--line);margin-bottom:28px}
.btn-pay-full{width:100%;background:var(--forest-2);color:white}
[data-theme="dark"] .btn-pay-full { color: #101614; }
.btn-destructive{background:var(--rust);color:white;width:auto}

.history-header{margin-bottom:12px}
.history-title{font-size:1.3rem}
.transaction-list{display:flex;flex-direction:column;gap:8px}
.txn-card{
  background:var(--paper);border:1px solid var(--line);
  padding:14px;border-radius:16px;display:flex;justify-content:space-between;align-items:center;gap:10px;
}
.txn-info{min-width:0}
.txn-info h5{font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.txn-info span{font-size:.7rem;color:var(--muted);display:block;margin-top:3px}
.txn-right-side{display:flex;align-items:center;gap:10px}
.txn-amount{font-family:"Fraunces",serif;font-weight:750;white-space:nowrap}
.txn-amount.gave{color:var(--rust)}
.txn-amount.received{color:var(--forest-2)}
.txn-actions{display:flex}
.btn-icon{
  display:grid;place-items:center;width:40px;height:40px;
  background:transparent;border:0;border-radius:9px;color:var(--muted);cursor:pointer;font-size:1.1rem;
}
.btn-icon:hover{background:var(--canvas);color:var(--ink)}

/* Settings Form Styles */
.logo-upload-section {
  display: flex; flex-direction: column; align-items: center; margin-bottom: 24px; padding-bottom: 20px; border-bottom: 1px dashed var(--line);
}
.logo-preview {
  width: 90px; height: 90px; border-radius: 20px; object-fit: cover; border: 2px solid var(--line); margin-bottom: 10px; box-shadow: var(--shadow);
}
.logo-placeholder {
  width: 90px; height: 90px; border-radius: 20px; background: var(--sage); color: var(--forest); display: grid; place-items: center; font-size: 0.8rem; font-weight: 600; text-align: center; border: 2px dashed var(--forest-2);
}

.empty-state{
  text-align:center;color:var(--muted);padding:40px 22px;
  border:1px dashed var(--line);border-radius:20px;background:var(--paper);
}
.empty-icon{
  width:54px;height:54px;margin:0 auto 13px;border-radius:18px;display:grid;place-items:center;
  background:var(--sage);color:var(--forest);font-family:"Fraunces",serif;font-size:1.5rem;
}
.empty-state h3{font-family:"Fraunces",serif;color:var(--ink);margin-bottom:5px}
.empty-state p{font-size:.82rem;line-height:1.5;max-width:280px;margin:0 auto 15px}
.empty-state .btn{width:auto}

.modal-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.7);backdrop-filter:blur(4px);
  display:flex;justify-content:center;align-items:flex-end;padding:16px;z-index:1000;
}
.modal-content{
  background:var(--paper);width:100%;max-width:500px;border-radius:26px;
  padding:12px 24px calc(24px + env(safe-area-inset-bottom));
  box-shadow:0 -10px 50px rgba(0,0,0,.3);
  animation:slideUp .28s cubic-bezier(.16,1,.3,1);
}
@keyframes slideUp{from{transform:translateY(35px);opacity:0}to{transform:none;opacity:1}}
.sheet-handle{width:42px;height:4px;border-radius:9px;background:var(--line);margin:0 auto 22px}
.modal-content h3{font-size:1.4rem;margin-bottom:22px}
.form-group{margin-bottom:18px}
.form-group label{display:block;font-size:.78rem;color:var(--muted);margin-bottom:7px;font-weight:600}
.form-group input{padding:13px;border-radius:12px}
.modal-actions{display:flex;justify-content:space-between;align-items:center;margin-top:26px}
.modal-actions .btn-primary{width:auto}
.divider{text-align:center;margin:18px 0;border-bottom:1px solid var(--line);line-height:.1em}
.divider span{background:var(--paper);padding:0 10px;font-size:.72rem;color:var(--muted)}
.confirm-sheet{text-align:center}
.danger-icon{
  display:grid;place-items:center;width:48px;height:48px;border-radius:16px;
  background:var(--rust-soft);color:var(--rust);font:750 1.4rem "Fraunces",serif;margin:0 auto 12px;
}
.confirm-sheet h3{margin-bottom:7px}
.confirm-sheet p{color:var(--muted);font-size:.86rem;line-height:1.5}
.toast{
  position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom));z-index:1100;
  transform:translate(-50%,18px);opacity:0;pointer-events:none;
  background:var(--ink);color:var(--paper);padding:11px 17px;border-radius:12px;font-size:.82rem;
  box-shadow:var(--shadow);transition:.2s;
}
.toast.show{opacity:1;transform:translate(-50%,0)}

@media(max-width:400px){
  .controls-section{grid-template-columns:1fr}
  .controls-section .btn{width:100%}
  #total-shop-debt{font-size:2.1rem}
  .stat-block strong{font-size:1.15rem}
}
@media(prefers-reduced-motion:reduce){
  *,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}