:root {
  --bg: #f0f4f8;
  --bg-card: #fff;
  --text: #1a202c;
  --text-secondary: #4a5568;
  --border: #e2e8f0;
  --shadow: rgba(0,0,0,.08);
  --primary: #2d6a4f;
  --primary-light: #52b788;
  --income-color: #16a34a;
  --expense-color: #dc2626;
  --input-bg: #fff;
  --hover-bg: #f7fafc;
  --header-text: #fff;
}

[data-theme=forest] {
  --bg: #e8f5e9;
  --bg-card: #ffffff;
  --text: #1b3a2b;
  --text-secondary: #2d6a4f;
  --border: #a5d6a7;
  --shadow: rgba(45,106,79,.12);
  --primary: #1b5e20;
  --primary-light: #4caf50;
  --input-bg: #f1f8e9;
  --hover-bg: #e8f5e9;
  --header-text: #fff;
}

[data-theme=galaxy] {
  --bg: #0f0a2e;
  --bg-card: rgba(30,20,80,.85);
  --text: #e2d9ff;
  --text-secondary: #a78bfa;
  --border: rgba(167,139,250,.25);
  --shadow: rgba(124,58,237,.15);
  --primary: #7c3aed;
  --primary-light: #a78bfa;
  --income-color: #34d399;
  --expense-color: #fb7185;
  --input-bg: rgba(30,20,80,.6);
  --hover-bg: rgba(124,58,237,.15);
  --header-text: #e2d9ff;
}

[data-theme=fire] {
  --bg: #1c0a0a;
  --bg-card: rgba(40,12,12,.9);
  --text: #ffddd6;
  --text-secondary: #fb923c;
  --border: rgba(251,146,60,.25);
  --shadow: rgba(220,38,38,.12);
  --primary: #dc2626;
  --primary-light: #f97316;
  --income-color: #4ade80;
  --expense-color: #ef4444;
  --input-bg: rgba(40,12,12,.6);
  --hover-bg: rgba(220,38,38,.12);
  --header-text: #ffddd6;
}

*, ::before, ::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: Vazirmatn, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  transition: background .4s, color .4s;
}

[data-theme=galaxy] body,
[data-theme=fire] body { background-attachment: fixed; }
[data-theme=galaxy] body { background-image: radial-gradient(ellipse at 20% 50%, rgba(124,58,237,.12) 0%, transparent 60%), radial-gradient(ellipse at 80% 20%, rgba(167,139,250,.08) 0%, transparent 50%), radial-gradient(ellipse at 50% 80%, rgba(99,102,241,.06) 0%, transparent 50%); }
[data-theme=fire] body { background-image: radial-gradient(ellipse at 30% 20%, rgba(220,38,38,.15) 0%, transparent 60%), radial-gradient(ellipse at 70% 80%, rgba(251,146,60,.1) 0%, transparent 50%); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 16px; }

/* header */
.header {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--header-text);
  padding: 16px 0;
  box-shadow: 0 4px 20px var(--shadow);
  position: sticky; top: 0; z-index: 100;
  transition: background .4s;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
}
.header-title { font-size: 1.35rem; font-weight: 800; letter-spacing: -.5px; }

.theme-switcher { display: flex; gap: 6px; }
.theme-btn {
  width: 40px; height: 40px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,.3);
  background: rgba(255,255,255,.1);
  cursor: pointer; font-size: 1.2rem;
  display: flex; align-items: center; justify-content: center;
  transition: all .3s; backdrop-filter: blur(4px);
}
.theme-btn:hover, .theme-btn.active { border-color: #fff; background: rgba(255,255,255,.25); transform: scale(1.12); }

/* dashboard */
.dashboard {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px; margin: 24px 0;
}
.card {
  background: var(--bg-card); border-radius: 16px;
  padding: 20px; display: flex; align-items: center; gap: 16px;
  box-shadow: 0 4px 16px var(--shadow);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
  transition: transform .25s, box-shadow .25s, background .4s, border .4s;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 8px 30px var(--shadow); }
.card-icon { font-size: 2.2rem; }
.card-body { display: flex; flex-direction: column; }
.card-label { font-size: .82rem; color: var(--text-secondary); font-weight: 500; }
.card-value { font-size: 1.4rem; font-weight: 800; direction: ltr; display: inline-block; }

/* form */
.form-section { margin-bottom: 24px; }
.section-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 12px; color: var(--text); }

.transaction-form {
  background: var(--bg-card); border-radius: 16px;
  padding: 24px; border: 1px solid var(--border);
  box-shadow: 0 4px 16px var(--shadow);
  backdrop-filter: blur(8px);
  transition: background .4s, border .4s;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.form-group { display: flex; flex-direction: column; gap: 4px; }
.form-group label { font-size: .85rem; font-weight: 600; color: var(--text-secondary); }

.form-group input, .form-group select, .form-group textarea {
  font-family: Vazirmatn, sans-serif;
  padding: 10px 14px; border-radius: 10px;
  border: 1.5px solid var(--border);
  background: var(--input-bg);
  color: var(--text);
  font-size: .9rem;
  transition: all .25s;
  outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(82,183,136,.15);
}

.btn-submit {
  width: 100%; padding: 12px; margin-top: 8px;
  border: none; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; font-family: Vazirmatn, sans-serif;
  font-size: 1rem; font-weight: 700; cursor: pointer;
  transition: transform .2s, box-shadow .2s, background .4s;
}
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 6px 20px var(--shadow); }
.btn-submit:active { transform: translateY(0); }

/* table */
.table-section { margin-bottom: 40px; }
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 12px; flex-wrap: wrap; gap: 8px;
}
.transaction-count { font-size: .85rem; color: var(--text-secondary); font-weight: 500; }

.table-wrapper { overflow-x: auto; border-radius: 16px; border: 1px solid var(--border); box-shadow: 0 4px 16px var(--shadow); background: var(--bg-card); transition: background .4s, border .4s; }

table { width: 100%; border-collapse: collapse; font-size: .88rem; }
thead { background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; }
th { padding: 12px 14px; text-align: right; font-weight: 600; white-space: nowrap; }
td { padding: 11px 14px; border-bottom: 1px solid var(--border); color: var(--text); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--hover-bg); }

.badge {
  display: inline-block; padding: 2px 12px; border-radius: 20px;
  font-size: .78rem; font-weight: 700;
}
.badge-income { background: rgba(22,163,74,.12); color: var(--income-color); }
.badge-expense { background: rgba(220,38,38,.12); color: var(--expense-color); }

.amount-income { color: var(--income-color); font-weight: 700; }
.amount-expense { color: var(--expense-color); font-weight: 700; }

.btn-delete {
  background: rgba(220,38,38,.1); border: none;
  color: var(--expense-color); cursor: pointer;
  padding: 6px 12px; border-radius: 8px;
  font-family: Vazirmatn, sans-serif;
  font-size: .8rem; font-weight: 600;
  transition: all .2s;
}
.btn-delete:hover { background: rgba(220,38,38,.2); }

.btn-reset {
  padding: 6px 16px; border-radius: 8px;
  border: 1.5px solid var(--expense-color);
  background: transparent; color: var(--expense-color);
  font-family: Vazirmatn, sans-serif; font-size: .8rem;
  font-weight: 600; cursor: pointer; margin-right: 8px;
  transition: all .25s;
}
.btn-reset:hover { background: var(--expense-color); color: #fff; }

.table-empty {
  text-align: center; padding: 40px 20px;
  color: var(--text-secondary); font-size: .95rem;
}

/* responsive */
@media(max-width:640px) {
  .form-row { grid-template-columns: 1fr; }
  .dashboard { grid-template-columns: 1fr; }
  .header-title { font-size: 1.1rem; }
  table { font-size: .82rem; }
  th, td { padding: 8px 10px; }
}

@media(max-width:480px) {
  .card { padding: 14px; }
  .card-value { font-size: 1.1rem; }
}

/* date picker */
.date-input-wrapper {
  display: flex; align-items: center; gap: 4px;
}
.date-input-wrapper input { flex: 1; min-width: 0; }
.calendar-toggle {
  flex-shrink: 0; width: 38px; height: 38px; border-radius: 10px;
  border: 1.5px solid var(--border); background: var(--input-bg);
  cursor: pointer; font-size: 1.1rem; display: flex; align-items: center; justify-content: center;
  transition: all .2s; padding: 0; line-height: 1;
}
.calendar-toggle:hover { border-color: var(--primary-light); background: var(--hover-bg); }

.date-picker {
  position: fixed; z-index: 1000; width: 260px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 14px; box-shadow: 0 8px 32px var(--shadow);
  padding: 12px; backdrop-filter: blur(12px);
  direction: rtl; font-family: Vazirmatn, sans-serif;
  animation: pickerFadeIn .15s ease;
}
@keyframes pickerFadeIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }

.picker-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 8px; direction: ltr;
}
.picker-nav {
  width: 32px; height: 32px; border-radius: 8px;
  border: none; background: transparent; color: var(--text);
  cursor: pointer; font-size: 1.3rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  transition: all .2s;
}
.picker-nav:hover { background: var(--hover-bg); }
.picker-title {
  font-size: .9rem; font-weight: 700; color: var(--text);
}

.picker-weekdays {
  display: grid; grid-template-columns: repeat(7, 1fr);
  text-align: center; margin-bottom: 4px;
}
.picker-weekdays span {
  font-size: .75rem; font-weight: 700; color: var(--text-secondary);
  padding: 4px 0;
}

.picker-days {
  display: grid; grid-template-columns: repeat(7, 1fr);
  gap: 2px; text-align: center;
}
.picker-days span {
  padding: 6px 0; border-radius: 8px; font-size: .82rem;
  cursor: pointer; transition: all .15s; color: var(--text);
}
.picker-days span:hover:not(.p-sel) { background: var(--hover-bg); }
.picker-days span.p-today {
  font-weight: 800; color: var(--primary);
  border: 1.5px solid var(--primary-light);
}
.picker-days span.p-sel {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; font-weight: 700;
}
.picker-days span:empty { cursor: default; }

/* stars for galaxy theme */
[data-theme=galaxy] .header::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
}