@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;600;700&family=DM+Mono:wght@400;500&display=swap');

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

:root {
  --white: #ffffff;
  --bg: #f7f8fa;
  --surface: #ffffff;
  --border: #e8eaed;
  --border-light: #f0f2f5;
  --text: #111318;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --accent: #2563eb;
  --accent-light: #eff6ff;
  --accent-hover: #1d4ed8;
  --success: #16a34a;
  --success-light: #f0fdf4;
  --danger: #dc2626;
  --danger-light: #fef2f2;
  --warning: #d97706;
  --warning-light: #fffbeb;
  --sidebar-w: 260px;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.1);
  --transition: 0.2s ease;
}

html { font-size: 16px; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }

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

.sidebar {
  width: var(--sidebar-w);
  background: var(--white);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: transform var(--transition);
}

.sidebar-logo {
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-logo-text {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.3px;
}

.sidebar-logo-dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
  margin-left: 4px;
  vertical-align: middle;
}

.sidebar-close {
  display: none;
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 6px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.sidebar-close:hover { background: var(--bg); }

.sidebar-nav {
  flex: 1;
  padding: 12px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
}

.nav-section {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  padding: 14px 8px 6px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
  position: relative;
}

.nav-link svg { flex-shrink: 0; }

.nav-link:hover {
  background: var(--bg);
  color: var(--text);
}

.nav-link.active {
  background: var(--accent-light);
  color: var(--accent);
}

.nav-link.active svg { color: var(--accent); }

.sidebar-footer {
  padding: 12px;
  border-top: 1px solid var(--border-light);
}

.logout-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--danger);
  font-size: 14px;
  font-weight: 500;
  transition: background var(--transition);
  cursor: pointer;
}

.logout-btn:hover { background: var(--danger-light); }

.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.topbar {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.menu-btn {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
}

.menu-btn:hover { background: var(--bg); }

.page-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.content {
  padding: 24px;
  flex: 1;
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.card + .card { margin-top: 20px; }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  -webkit-appearance: none;
}

.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}

.form-control::placeholder { color: var(--text-muted); }

select.form-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.file-input-wrap {
  position: relative;
}

.file-input-label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  transition: border-color var(--transition), background var(--transition);
  background: var(--bg);
}

.file-input-label:hover {
  border-color: var(--accent);
  background: var(--accent-light);
  color: var(--accent);
}

.file-input { display: none; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover { background: var(--accent-hover); }

.btn-secondary {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover { background: var(--border); }

.btn-success {
  background: var(--success);
  color: #fff;
}

.btn-success:hover { background: #15803d; }

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover { background: #b91c1c; }

.btn-warning {
  background: var(--warning);
  color: #fff;
}

.btn-warning:hover { background: #b45309; }

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-icon {
  padding: 7px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

.btn-icon:hover { background: var(--bg); color: var(--text); }

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

thead tr {
  border-bottom: 1px solid var(--border);
}

th {
  padding: 10px 12px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  white-space: nowrap;
}

td {
  padding: 12px 12px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text);
  vertical-align: middle;
}

tr:last-child td { border-bottom: none; }

tbody tr:hover { background: var(--bg); }

.table-img {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.badge-pending { background: var(--warning-light); color: var(--warning); }
.badge-accepted { background: var(--success-light); color: var(--success); }
.badge-declined { background: var(--danger-light); color: var(--danger); }

.actions {
  display: flex;
  gap: 6px;
  align-items: center;
}

.filter-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.filter-chip {
  padding: 7px 16px;
  border-radius: 20px;
  border: 1px solid var(--border);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--white);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  display: inline-block;
}

.filter-chip:hover, .filter-chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.payment-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  box-shadow: var(--shadow);
}

.payment-card + .payment-card { margin-top: 12px; }

.payment-thumb {
  width: 70px;
  height: 70px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.payment-info { flex: 1; min-width: 0; }
.payment-info h3 { font-size: 15px; font-weight: 600; margin-bottom: 2px; }
.payment-info p { font-size: 13px; color: var(--text-secondary); }

.payment-screenshot {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.payment-actions {
  display: flex;
  gap: 6px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
}

.empty-state svg { margin: 0 auto 12px; }
.empty-state p { font-size: 14px; }

.preview-img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  margin-bottom: 8px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

.invoice-item-row {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 10px;
  align-items: center;
  margin-bottom: 10px;
}

.invoice-item-row .btn-icon { flex-shrink: 0; }

.section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
}

.overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.35);
  z-index: 99;
}

.work-images {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.work-img-wrap {
  position: relative;
  display: inline-block;
}

.work-img-wrap img {
  width: 50px;
  height: 50px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--border);
  display: block;
}

.work-img-wrap a {
  position: absolute;
  top: -4px; right: -4px;
  width: 16px; height: 16px;
  background: var(--danger);
  color: #fff;
  border-radius: 50%;
  font-size: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  line-height: 1;
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg);
  }

  .sidebar-close { display: flex; }

  .overlay.open { display: block; }

  .main { margin-left: 0; }

  .menu-btn { display: flex; }

  .content { padding: 16px; }

  .topbar { padding: 0 16px; }

  .form-row { grid-template-columns: 1fr; }

  .card { padding: 16px; }

  .invoice-item-row { grid-template-columns: 1fr; }
  .invoice-item-row .btn-icon { width: fit-content; }

  .payment-card { flex-direction: column; }
  .payment-screenshot { width: 100%; height: 160px; }
}

@media (max-width: 480px) {
  .actions { flex-wrap: wrap; }
  .filter-bar { gap: 6px; }
  .filter-chip { font-size: 12px; padding: 6px 12px; }
}

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 20px;
}

.login-box {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 40px 36px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-md);
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo-icon {
  width: 52px;
  height: 52px;
  background: var(--accent);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
}

.login-logo h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.3px;
}

.login-logo p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.input-icon-wrap {
  position: relative;
}

.input-icon-wrap svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.input-icon-wrap .form-control {
  padding-left: 38px;
}

.login-btn {
  width: 100%;
  padding: 12px;
  justify-content: center;
  font-size: 14px;
  margin-top: 8px;
}

@media (max-width: 480px) {
  .login-box { padding: 28px 20px; }
}