/* ============================================================
   Melon Accountants — Brand Design System
   Light + Dark mode via [data-theme="dark"] on <html>
   ============================================================ */

/* ── Google Font: Inter ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ── CSS Variables ── */
:root {
  /* Brand */
  --brand:          #2D7A3A;
  --brand-hover:    #245F2E;
  --brand-light:    #EBF5EC;
  --brand-text:     #FFFFFF;

  /* Backgrounds */
  --bg-base:        #F4F6F5;
  --bg-card:        #FFFFFF;
  --bg-sidebar:     #FFFFFF;
  --bg-header:      #FFFFFF;
  --bg-table-head:  #F9FAFB;
  --bg-hover:       #F3F8F4;
  --bg-input:       #FFFFFF;

  /* Borders */
  --border:         #E5E7EB;
  --border-input:   #D1D5DB;

  /* Text */
  --text-primary:   #111827;
  --text-secondary: #6B7280;
  --text-muted:     #9CA3AF;
  --text-link:      #2D7A3A;

  /* Status */
  --success-bg:     #DCFCE7;
  --success-text:   #166534;
  --error-bg:       #FEE2E2;
  --error-text:     #991B1B;
  --warning-bg:     #FEF3C7;
  --warning-text:   #92400E;
  --info-bg:        #DBEAFE;
  --info-text:      #1E40AF;
  --pending-bg:     #F3F4F6;
  --pending-text:   #374151;

  /* Shadows */
  --shadow-sm:      0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:      0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);

  /* Radius */
  --radius:         10px;
  --radius-sm:      6px;
  --radius-lg:      14px;

  /* Sidebar */
  --sidebar-width:  240px;
}

[data-theme="dark"] {
  --brand:          #3BAE4E;
  --brand-hover:    #2D8A3C;
  --brand-light:    #1A2E1C;
  --brand-text:     #FFFFFF;

  --bg-base:        #0D1210;
  --bg-card:        #161C17;
  --bg-sidebar:     #111510;
  --bg-header:      #161C17;
  --bg-table-head:  #1A2119;
  --bg-hover:       #1E2820;
  --bg-input:       #1A2119;

  --border:         #263028;
  --border-input:   #2E3A30;

  --text-primary:   #EDF2EE;
  --text-secondary: #8FA090;
  --text-muted:     #5A6E5C;
  --text-link:      #5CC870;

  --success-bg:     #14291A;
  --success-text:   #6EE08A;
  --error-bg:       #2A1414;
  --error-text:     #F87171;
  --warning-bg:     #2A2010;
  --warning-text:   #FCD34D;
  --info-bg:        #101E30;
  --info-text:      #93C5FD;
  --pending-bg:     #1E2420;
  --pending-text:   #A0ADA2;

  --shadow-sm:      0 1px 3px rgba(0,0,0,0.3);
  --shadow-md:      0 4px 12px rgba(0,0,0,0.4);
}

/* ── Base Reset ── */
*, *::before, *::after { box-sizing: border-box; }

html { font-size: 16px; }

body {
  font-family: 'Inter', 'TikTok Sans', system-ui, sans-serif;
  background-color: var(--bg-base);
  color: var(--text-primary);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* ── Sidebar ── */
.m-sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  overflow-y: auto;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.m-sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 16px 16px;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
}

.m-sidebar-logo-icon {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
}

.m-sidebar-logo-text {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.m-sidebar-logo-sub {
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.m-sidebar-nav {
  flex: 1;
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.m-nav-section-label {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 8px 8px 4px;
  margin-top: 8px;
}

.m-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: background 0.15s ease, color 0.15s ease;
  cursor: pointer;
}

.m-nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.m-nav-item.active {
  background: var(--brand-light);
  color: var(--brand);
  font-weight: 600;
}

.m-nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.8;
}

.m-nav-item.active svg {
  opacity: 1;
}

.m-sidebar-footer {
  padding: 12px 10px;
  border-top: 1px solid var(--border);
}

.m-user-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
}

.m-user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--brand-light);
  color: var(--brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}

.m-user-info {
  flex: 1;
  min-width: 0;
}

.m-user-name {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.m-user-role {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.m-logout-btn {
  color: var(--text-muted);
  transition: color 0.15s ease;
  flex-shrink: 0;
  text-decoration: none;
}

.m-logout-btn:hover { color: var(--error-text); }

/* ── Dark mode toggle ── */
.m-theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.m-theme-toggle:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* ── Page Layout ── */
.m-layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

.m-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.m-header {
  background: var(--bg-header);
  border-bottom: 1px solid var(--border);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.m-header-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.m-header-sub {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 1px;
}

.m-content {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

/* ── Cards ── */
.m-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.m-card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.m-card-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.m-card-body {
  padding: 20px;
}

/* ── Stat Cards ── */
.m-stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.15s ease;
}

.m-stat-card:hover {
  box-shadow: var(--shadow-md);
}

.m-stat-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.m-stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1;
}

.m-stat-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.m-stat-accent {
  border-left: 3px solid var(--brand);
}

/* ── Tables ── */
.m-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius);
}

.m-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.m-table thead tr {
  background: var(--bg-table-head);
  border-bottom: 1px solid var(--border);
}

.m-table th {
  padding: 10px 16px;
  text-align: left;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.m-table td {
  padding: 12px 16px;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.m-table tbody tr:last-child td {
  border-bottom: none;
}

.m-table tbody tr:hover td {
  background: var(--bg-hover);
}

/* ── Badges / Status Pills ── */
.m-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  white-space: nowrap;
}

.m-badge-success  { background: var(--success-bg);  color: var(--success-text); }
.m-badge-error    { background: var(--error-bg);    color: var(--error-text); }
.m-badge-warning  { background: var(--warning-bg);  color: var(--warning-text); }
.m-badge-info     { background: var(--info-bg);     color: var(--info-text); }
.m-badge-pending  { background: var(--pending-bg);  color: var(--pending-text); }
.m-badge-brand    { background: var(--brand-light); color: var(--brand); }

/* ── Buttons ── */
.m-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.m-btn-primary {
  background: var(--brand);
  color: var(--brand-text);
}
.m-btn-primary:hover { background: var(--brand-hover); }

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

.m-btn-danger {
  background: var(--error-bg);
  color: var(--error-text);
  border: 1px solid transparent;
}
.m-btn-danger:hover { background: #FCA5A5; }

.m-btn-success {
  background: var(--brand);
  color: var(--brand-text);
  border: 1px solid transparent;
}
.m-btn-success:hover { background: var(--brand-hover); }

.m-btn-sm {
  padding: 5px 10px;
  font-size: 0.8rem;
}

.m-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* ── Inputs ── */
.m-input {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-input);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.m-input:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(45,122,58,0.12);
}

.m-input::placeholder { color: var(--text-muted); }

.m-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.m-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B7280' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 32px;
}

/* ── Flash messages ── */
.m-flash-success { background: var(--success-bg); color: var(--success-text); border: 1px solid rgba(22,101,52,0.2); border-radius: var(--radius-sm); padding: 10px 14px; font-size: 0.875rem; margin-bottom: 8px; }
.m-flash-error   { background: var(--error-bg);   color: var(--error-text);   border: 1px solid rgba(153,27,27,0.2); border-radius: var(--radius-sm); padding: 10px 14px; font-size: 0.875rem; margin-bottom: 8px; }
.m-flash-info    { background: var(--info-bg);    color: var(--info-text);    border: 1px solid rgba(30,64,175,0.2); border-radius: var(--radius-sm); padding: 10px 14px; font-size: 0.875rem; margin-bottom: 8px; }
.m-flash-warning { background: var(--warning-bg); color: var(--warning-text); border: 1px solid rgba(146,64,14,0.2); border-radius: var(--radius-sm); padding: 10px 14px; font-size: 0.875rem; margin-bottom: 8px; }

/* ── Modal ── */
.m-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  backdrop-filter: blur(2px);
}

.m-modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  width: 100%;
  max-width: 460px;
  box-shadow: var(--shadow-md);
}

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

.m-modal-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* ── Login page ── */
.m-login-page {
  min-height: 100vh;
  background: var(--bg-base);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.m-login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  width: 100%;
  max-width: 380px;
  box-shadow: var(--shadow-md);
}

.m-google-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 11px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.15s ease;
  cursor: pointer;
}

.m-google-btn:hover {
  background: var(--bg-hover);
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(45,122,58,0.1);
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Utility ── */
.m-divider { border: none; border-top: 1px solid var(--border); margin: 16px 0; }
.m-text-link { color: var(--text-link); text-decoration: none; font-weight: 500; }
.m-text-link:hover { text-decoration: underline; }
.m-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.m-hidden { display: none !important; }

/* ── Filter bar ── */
.m-filter-bar {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 20px;
}

/* ── Pagination ── */
.m-pagination {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}

.m-page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 32px;
  padding: 0 8px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.15s ease;
  border: 1px solid transparent;
}

.m-page-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.m-page-btn.active { background: var(--brand); color: white; border-color: var(--brand); }
.m-page-btn.disabled { opacity: 0.4; pointer-events: none; }

/* ── Checkbox ── */
.m-checkbox {
  width: 15px;
  height: 15px;
  accent-color: var(--brand);
  cursor: pointer;
}

/* ── Transitions for theme switch ── */
.m-sidebar, .m-header, .m-card, .m-stat-card, .m-table thead tr,
.m-modal, .m-login-card, .m-filter-bar, body {
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
