/* =====================================================================
   styles.css — Giao diện app chi tiêu (tông TRẮNG + XANH MINT dịu)
   Nhẹ nhàng, dịu mắt, xem lâu không mỏi. Font: Nunito.
   ===================================================================== */

:root {
  --bg:          #F4FAF8;   /* nền trắng ngả mint rất nhạt */
  --card:        #FFFFFF;
  --ink:         #2E4640;   /* chữ chính (xanh rêu xám mềm) */
  --ink-soft:    #7C938C;   /* chữ phụ */
  --line:        #E4F0EC;   /* viền, kẻ nhạt */

  --mint:        #14A88E;   /* xanh mint (nhấn chính) */
  --mint-deep:   #0E8A73;   /* mint đậm vừa (số nổi bật) */
  --accent-text: #0E7C66;   /* teal đọc rõ cho tiêu đề */
  --mint-soft:   #CFEDE3;   /* mint pastel */

  --green:       #1FA971;   /* Thu */
  --red:         #EF7E77;   /* Chi (đỏ san hô mềm, dịu mắt) */

  --grad:        linear-gradient(135deg, #E9F8F2 0%, #D4EFE6 100%);
  --grad-accent: linear-gradient(90deg, #6FD3B8 0%, #CFEDE3 100%);

  --radius: 16px;
  --shadow:    0 2px 12px rgba(20, 168, 142, 0.08);
  --shadow-lg: 0 8px 24px rgba(20, 168, 142, 0.12);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Nunito', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ===================== HEADER (teal đậm gradient, chữ trắng) ===================== */
.app-header {
  background: linear-gradient(135deg, #0B8A72 0%, #12A48B 52%, #2BBFA3 100%);
  color: #fff;
  padding-bottom: 24px;
}
.header-inner { max-width: 1080px; margin: 0 auto; padding: 20px 20px 0; }
.header-top {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
}
.header-title h1 { margin: 0; font-size: 1.5rem; font-weight: 800; letter-spacing: -0.01em; color: #fff; }
.header-title .subtitle { margin: 2px 0 0; color: rgba(255,255,255,0.82); font-size: 0.9rem; }
.header-controls { display: flex; align-items: flex-end; gap: 10px; }
.header-controls label {
  display: flex; flex-direction: column;
  font-size: 0.72rem; font-weight: 700; color: rgba(255,255,255,0.88); gap: 4px;
}
.header-controls select {
  font-family: inherit; font-size: 0.92rem; font-weight: 700; color: var(--ink);
  background: #fff; border: none; border-radius: 10px;
  padding: 7px 11px; cursor: pointer; min-width: 88px;
}
.btn-refresh {
  font-size: 1.05rem; background: rgba(255,255,255,0.2); color: #fff;
  border: 1px solid rgba(255,255,255,0.4); border-radius: 10px; width: 38px; height: 38px;
  cursor: pointer; transition: background 0.15s;
}
.btn-refresh:hover { background: rgba(255,255,255,0.32); }

/* Hero: DẢI KÍNH MỜ (glass) trong suốt trên nền teal, chia 3 phần */
.hero-strip {
  margin-top: 18px;
  background: linear-gradient(135deg, rgba(255,255,255,0.28) 0%, rgba(255,255,255,0.10) 100%);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.38);
  box-shadow: 0 8px 26px rgba(4, 70, 58, 0.18);
  border-radius: 16px;
  display: grid;
  grid-template-columns: 1.25fr 1fr 1fr;
  overflow: hidden;
}
.hero-item {
  display: flex; align-items: center; gap: 11px;
  padding: 15px 20px;
  border-left: 1px solid rgba(255,255,255,0.24);
}
.hero-item:first-child { border-left: none; }
.hero-dot { width: 9px; height: 9px; border-radius: 50%; flex: none; box-shadow: 0 0 0 3px rgba(255,255,255,0.25); }
.dot-balance { background: #FFFFFF; }
.dot-income  { background: #5AE3A0; }
.dot-expense { background: #FF8A7A; }
.hero-text { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.hero-label { font-size: 0.72rem; font-weight: 700; color: rgba(255,255,255,0.85); }
.hero-value { font-size: 1.25rem; font-weight: 800; letter-spacing: -0.01em; color: #fff; }
.hero-main .hero-value { font-size: 1.5rem; }
.hero-income { color: #EAFFF6; }
.hero-expense { color: #FFECE9; }

/* ===================== CONTAINER ===================== */
.container { max-width: 1080px; margin: 0 auto; padding: 22px 20px 40px; }

/* ===================== TRẠNG THÁI ===================== */
.status {
  padding: 16px 18px; border-radius: var(--radius); background: var(--card);
  box-shadow: var(--shadow); font-weight: 600; text-align: center; color: var(--ink-soft);
}
.status.is-error { background: #FDECEB; color: #D65A52; border: 1px solid #F6BEBA; }

/* ===================== BIỂU ĐỒ ===================== */
.charts-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-bottom: 22px; }
.chart-card {
  background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 18px 18px 14px; position: relative; overflow: hidden;
}
.chart-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--grad-accent);
}
.chart-card h3 { margin: 4px 0 12px; font-size: 0.98rem; font-weight: 700; color: var(--accent-text); }
.chart-box { position: relative; height: 250px; }
.chart-empty { text-align: center; color: var(--ink-soft); font-size: 0.85rem; padding: 40px 10px; margin: 0; }

/* Biểu đồ trải ngang cả 2 cột (Theo dõi thu chi) */
.chart-wide { grid-column: 1 / -1; }
.chart-wide .chart-box { height: 180px; }

/* ===================== KPI phụ ===================== */
.kpi-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 22px; }
.kpi-card {
  background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 16px 18px; display: flex; flex-direction: column; gap: 5px;
}
.kpi-label { font-size: 0.82rem; font-weight: 700; color: var(--ink-soft); }
.kpi-value { font-size: 1.4rem; font-weight: 800; letter-spacing: -0.02em; color: var(--mint-deep); }
.kpi-hint  { font-size: 0.72rem; color: var(--ink-soft); }

/* ===================== BẢNG ===================== */
.panel { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.panel-head { display: flex; align-items: baseline; justify-content: space-between; padding: 18px 20px 12px; }
.panel-head h2 { margin: 0; font-size: 1.1rem; font-weight: 700; color: var(--accent-text); }
.panel-count { font-size: 0.85rem; color: var(--ink-soft); }

.table-wrap { overflow-x: auto; }
.txn-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; min-width: 720px; }
.txn-table th {
  text-align: left; font-weight: 700; font-size: 0.76rem; text-transform: uppercase;
  letter-spacing: 0.03em; color: var(--ink-soft); padding: 10px 16px;
  border-bottom: 1px solid var(--line); background: #F1F9F6;
}
.txn-table td { padding: 11px 16px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.txn-table tr:last-child td { border-bottom: none; }
.txn-table tr:hover td { background: #F1F9F6; }
.col-amount { text-align: right; }

.tag { display: inline-block; font-size: 0.72rem; font-weight: 700; padding: 2px 9px; border-radius: 999px; }
.tag-income { background: #D8F3E7; color: #17845C; }
.tag-expense { background: #FCE4E2; color: #C85850; }
.tag-class { font-size: 0.72rem; color: var(--ink-soft); }

.amount { font-variant-numeric: tabular-nums; font-weight: 700; text-align: right; white-space: nowrap; }
.amount-income { color: var(--green); }
.amount-expense { color: var(--red); }

.empty-note { text-align: center; color: var(--ink-soft); padding: 24px; margin: 0; }

/* ===================== FORM nhập / sửa ===================== */
.form-panel { margin-bottom: 22px; }
.txn-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px 14px;
  padding: 4px 20px 18px;
  align-items: end;
}
.field { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.field-wide { grid-column: span 2; }
.field label { font-size: 0.74rem; font-weight: 700; color: var(--ink-soft); }
.txn-form input, .txn-form select {
  font-family: inherit; font-size: 0.9rem; font-weight: 600; color: var(--ink);
  padding: 9px 11px; border: 1px solid var(--line); border-radius: 10px; background: #fff;
}
.txn-form input:focus, .txn-form select:focus { outline: 2px solid var(--mint); border-color: var(--mint); }
.field-actions { flex-direction: row; gap: 8px; }
.btn-primary {
  font-family: inherit; font-size: 0.9rem; font-weight: 700;
  background: var(--mint); color: #fff; border: none; border-radius: 10px;
  padding: 10px 18px; cursor: pointer; transition: background 0.15s; white-space: nowrap;
}
.btn-primary:hover { background: var(--mint-deep); }
.btn-primary:disabled { opacity: 0.6; cursor: default; }
.btn-ghost {
  font-family: inherit; font-size: 0.9rem; font-weight: 600;
  background: #fff; color: var(--ink-soft); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 14px; cursor: pointer;
}
.form-msg { padding: 0 20px 16px; margin: 0; font-weight: 700; color: var(--green); }
.form-msg.is-error { color: var(--red); }

/* Nút Sửa / Xoá trong bảng */
.col-actions { white-space: nowrap; }
.row-btn {
  font-family: inherit; font-size: 0.78rem; font-weight: 700;
  padding: 5px 11px; border-radius: 8px; border: 1px solid var(--line);
  background: #fff; cursor: pointer; transition: background 0.15s;
}
.row-btn:hover { background: #F1F9F6; }
.row-edit { color: var(--mint-deep); }
.row-del { color: var(--red); margin-left: 6px; }

/* ===================== NGÂN SÁCH (M5) ===================== */
.budget-panel { margin-bottom: 22px; }
.budget-list { padding: 6px 20px 20px; display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.budget-item { border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; display: flex; flex-direction: column; gap: 7px; }
.budget-top { display: flex; justify-content: space-between; align-items: baseline; }
.budget-name { font-weight: 700; font-size: 0.9rem; }
.budget-pct { font-weight: 800; font-size: 0.9rem; }
.budget-bar { height: 8px; border-radius: 999px; background: #EEF3F1; overflow: hidden; }
.budget-bar > span { display: block; height: 100%; border-radius: 999px; }
.budget-sub { display: flex; justify-content: space-between; font-size: 0.76rem; color: var(--ink-soft); }
.budget-remain { font-weight: 700; }
/* Trạng thái màu: xanh (ổn), vàng (gần vượt), đỏ (vượt) */
.budget-ok   .budget-bar > span { background: var(--green); }
.budget-ok   .budget-pct { color: var(--green); }
.budget-warn .budget-bar > span { background: #F5B01E; }
.budget-warn .budget-pct, .budget-warn .budget-remain { color: #C4890B; }
.budget-warn { border-color: #F6DFA6; background: #FFFBF0; }
.budget-over .budget-bar > span { background: var(--red); }
.budget-over .budget-pct, .budget-over .budget-remain { color: var(--red); }
.budget-over { border-color: #F7C5C1; background: #FEF3F2; }

/* ===================== CÀI ĐẶT (M5) ===================== */
.settings-panel { margin-bottom: 22px; }
.settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; padding: 6px 20px 20px; }
.mini-form { display: flex; flex-direction: column; gap: 10px; }
.mini-form h3 { margin: 0 0 2px; font-size: 0.95rem; font-weight: 700; color: var(--accent-text); }
.mini-form label { display: flex; flex-direction: column; gap: 4px; font-size: 0.78rem; font-weight: 700; color: var(--ink-soft); }
.mini-form input, .mini-form select {
  font-family: inherit; font-size: 0.9rem; font-weight: 600; color: var(--ink);
  padding: 9px 11px; border: 1px solid var(--line); border-radius: 10px; background: #fff;
}
.mini-form input:focus, .mini-form select:focus { outline: 2px solid var(--mint); border-color: var(--mint); }
.mini-form .btn-primary { align-self: flex-start; margin-top: 2px; }
.mini-hint { font-size: 0.74rem; color: var(--ink-soft); margin: 6px 0 0; }
.cat-list { display: flex; flex-wrap: wrap; gap: 7px; }
.cat-chip {
  font-family: inherit; font-size: 0.78rem; font-weight: 600; color: var(--ink);
  background: var(--pink-2, #F1F9F6); border: 1px solid var(--line);
  border-radius: 999px; padding: 5px 12px; cursor: pointer;
}
.cat-chip:hover { border-color: var(--mint); color: var(--mint-deep); }

@media (max-width: 700px) {
  .settings-grid { grid-template-columns: 1fr; }
}

/* ===================== FOOTER ===================== */
.app-footer { text-align: center; color: var(--ink-soft); font-size: 0.78rem; padding: 20px; }

/* ===================== RESPONSIVE ===================== */
@media (max-width: 820px) {
  .charts-grid { grid-template-columns: 1fr; }
  .hero-main .hero-value { font-size: 1.4rem; }
}
@media (max-width: 640px) {
  .kpi-grid { grid-template-columns: 1fr; }
  /* Dải hero xếp dọc: đổi đường chia sang viền trên */
  .hero-strip { grid-template-columns: 1fr; }
  .hero-item { border-left: none; border-top: 1px solid var(--line); }
  .hero-item:first-child { border-top: none; }
  .header-title h1 { font-size: 1.28rem; }
  .container { padding: 18px 14px 32px; }
}