/* ============================================================
   Material 3 Expressive — Design System
   Revenue Collection App
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Roboto+Flex:opsz,wght@8..144,300..900&family=Roboto:wght@400;500;700&display=swap');
@import url('https://fonts.googleapis.com/icon?family=Material+Symbols+Rounded:opsz,wght,FILL,GRAD@20..48,300..700,0..1,-50..200');

/* ---------- DESIGN TOKENS ---------- */
:root {
  /* Primary — Vibrant Emerald */
  --md-primary: #006d51;
  --md-on-primary: #ffffff;
  --md-primary-container: #6fffce;
  --md-on-primary-container: #00210f;
  --md-primary-fixed: #6fffce;
  --md-primary-fixed-dim: #4ce0b1;

  /* Secondary — Soft Sage */
  --md-secondary: #4d6357;
  --md-on-secondary: #ffffff;
  --md-secondary-container: #cfe9d9;
  --md-on-secondary-container: #0a1f16;

  /* Tertiary — Vivid Coral (expressive accent) */
  --md-tertiary: #ff5a36;
  --md-on-tertiary: #ffffff;
  --md-tertiary-container: #ffdad2;
  --md-on-tertiary-container: #3b0900;

  /* Error */
  --md-error: #ba1a1a;
  --md-on-error: #ffffff;
  --md-error-container: #ffdad6;
  --md-on-error-container: #410002;

  /* Surfaces (tonal) */
  --md-background: #f5fbf6;
  --md-on-background: #171d1a;
  --md-surface: #f5fbf6;
  --md-on-surface: #171d1a;
  --md-surface-variant: #dce5dd;
  --md-on-surface-variant: #404943;
  --md-surface-dim: #d5dbd6;
  --md-surface-bright: #f5fbf6;
  --md-surface-container-lowest: #ffffff;
  --md-surface-container-low: #eff5f0;
  --md-surface-container: #e9efea;
  --md-surface-container-high: #e3e9e4;
  --md-surface-container-highest: #dde4de;

  --md-outline: #707972;
  --md-outline-variant: #c0c9c1;

  --md-success: #2e7d32;
  --md-warning: #f57c00;
  --md-info: #0288d1;

  /* Shape (M3 Expressive favors larger radii) */
  --shape-xs: 4px;
  --shape-sm: 8px;
  --shape-md: 16px;
  --shape-lg: 28px;
  --shape-xl: 36px;
  --shape-full: 9999px;

  /* Elevation (tonal + soft shadow) */
  --elev-1: 0 1px 2px rgba(0,0,0,0.05), 0 1px 3px 1px rgba(0,0,0,0.04);
  --elev-2: 0 2px 4px rgba(0,0,0,0.06), 0 4px 8px 2px rgba(0,0,0,0.05);
  --elev-3: 0 4px 8px rgba(0,0,0,0.08), 0 8px 16px 4px rgba(0,0,0,0.06);
  --elev-4: 0 8px 16px rgba(0,0,0,0.10), 0 16px 32px 8px rgba(0,0,0,0.08);

  /* Motion — Expressive springs */
  --motion-spring-fast: cubic-bezier(0.34, 1.56, 0.64, 1);
  --motion-spring-default: cubic-bezier(0.5, 1.5, 0.5, 1);
  --motion-emphasized: cubic-bezier(0.2, 0, 0, 1);
  --motion-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-short: 150ms;
  --duration-medium: 280ms;
  --duration-long: 450ms;

  /* Typography */
  --font-brand: 'Roboto Flex', system-ui, sans-serif;
  --font-plain: 'Roboto', system-ui, sans-serif;
}

/* ---------- DARK THEME (auto) ---------- */
@media (prefers-color-scheme: dark) {
  :root {
    --md-primary: #4ce0b1;
    --md-on-primary: #003827;
    --md-primary-container: #00513a;
    --md-on-primary-container: #6fffce;
    --md-secondary: #b3ccbe;
    --md-on-secondary: #1f352a;
    --md-secondary-container: #354b40;
    --md-on-secondary-container: #cfe9d9;
    --md-tertiary: #ffb59f;
    --md-on-tertiary: #5f1700;
    --md-tertiary-container: #842300;
    --md-on-tertiary-container: #ffdad2;
    --md-background: #0f1512;
    --md-on-background: #dde4de;
    --md-surface: #0f1512;
    --md-on-surface: #dde4de;
    --md-surface-variant: #404943;
    --md-on-surface-variant: #c0c9c1;
    --md-surface-container-lowest: #090f0c;
    --md-surface-container-low: #171d1a;
    --md-surface-container: #1b211e;
    --md-surface-container-high: #252b28;
    --md-surface-container-highest: #303633;
    --md-outline: #8a938c;
    --md-outline-variant: #404943;
  }
}

/* ---------- BASE ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-plain);
  background: var(--md-background);
  color: var(--md-on-background);
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

/* ---------- TYPOGRAPHY (M3 Expressive scale) ---------- */
.m3-display-lg { font-family: var(--font-brand); font-weight: 400; font-size: clamp(2.5rem, 6vw, 3.75rem); line-height: 1.1; letter-spacing: -0.02em; }
.m3-display    { font-family: var(--font-brand); font-weight: 500; font-size: clamp(2rem, 4.5vw, 2.875rem); line-height: 1.15; letter-spacing: -0.01em; }
.m3-headline   { font-family: var(--font-brand); font-weight: 600; font-size: clamp(1.5rem, 3vw, 2rem); line-height: 1.2; letter-spacing: -0.005em; }
.m3-title-lg   { font-family: var(--font-brand); font-weight: 600; font-size: 1.375rem; line-height: 1.3; }
.m3-title      { font-family: var(--font-brand); font-weight: 500; font-size: 1.125rem; line-height: 1.35; }
.m3-body-lg    { font-family: var(--font-plain); font-weight: 400; font-size: 1rem; line-height: 1.5; }
.m3-body       { font-family: var(--font-plain); font-weight: 400; font-size: 0.9375rem; line-height: 1.5; }
.m3-label-lg   { font-family: var(--font-plain); font-weight: 500; font-size: 0.875rem; line-height: 1.4; letter-spacing: 0.01em; }
.m3-label      { font-family: var(--font-plain); font-weight: 500; font-size: 0.75rem; line-height: 1.4; letter-spacing: 0.05em; text-transform: uppercase; }

h1, h2, h3, h4 { font-family: var(--font-brand); font-weight: 600; margin: 0 0 .5em; }
h1 { font-size: clamp(1.875rem, 4vw, 2.5rem); letter-spacing: -0.01em; }
h2 { font-size: clamp(1.5rem, 3vw, 1.875rem); }
h3 { font-size: 1.375rem; }
h4 { font-size: 1.125rem; }

a { color: var(--md-primary); text-decoration: none; transition: color var(--duration-short) var(--motion-standard); }
a:hover { color: var(--md-on-primary-container); text-decoration: underline; }

/* ---------- LAYOUT ---------- */
.m3-shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
}
@media (max-width: 960px) {
  .m3-shell { grid-template-columns: 1fr; }
  .m3-rail { display: none; }
}

.m3-main {
  padding: 24px clamp(16px, 4vw, 40px) 80px;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

.m3-page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 24px;
}

.m3-page-title {
  font-family: var(--font-brand);
  font-weight: 600;
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--md-on-surface);
}

.m3-page-subtitle {
  color: var(--md-on-surface-variant);
  margin: 4px 0 0;
}

/* ---------- NAVIGATION RAIL (M3 Expressive — rounded pill drawer) ---------- */
.m3-rail {
  background: var(--md-surface-container-low);
  border-right: 1px solid var(--md-outline-variant);
  padding: 24px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.m3-rail-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px 24px;
  font-family: var(--font-brand);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--md-on-surface);
}
.m3-rail-brand .brand-mark {
  width: 40px; height: 40px;
  border-radius: var(--shape-md);
  background: linear-gradient(135deg, var(--md-primary), var(--md-tertiary));
  display: grid; place-items: center;
  color: var(--md-on-primary);
  font-weight: 700;
  overflow: hidden;            /* keep an inner img clipped to the rounded square */
}
/* When the brand-mark contains a logo image, drop the gradient and let the PNG show through. */
.m3-rail-brand .brand-mark:has(img),
.m3-auth-brand .brand-mark:has(img) {
  background: var(--md-surface-container-low);
  box-shadow: none;
}
/* Default sizing/clipping for an <img> inside any brand-mark
   (callers can still override with inline styles). */
.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.m3-nav-section {
  font-family: var(--font-plain);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--md-on-surface-variant);
  padding: 16px 16px 8px;
}

.m3-nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-radius: var(--shape-full);
  color: var(--md-on-surface-variant);
  font-weight: 500;
  font-size: 0.9375rem;
  cursor: pointer;
  text-decoration: none;
  position: relative;
  transition: background var(--duration-short) var(--motion-standard),
              color var(--duration-short) var(--motion-standard),
              transform var(--duration-medium) var(--motion-spring-fast);
}
.m3-nav-item:hover {
  background: var(--md-surface-container-high);
  color: var(--md-on-surface);
  text-decoration: none;
}
.m3-nav-item.active {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  font-weight: 600;
}
.m3-nav-item .material-symbols-rounded {
  font-size: 22px;
  font-variation-settings: 'FILL' 0, 'wght' 400;
  transition: font-variation-settings var(--duration-medium) var(--motion-spring-default);
}
.m3-nav-item.active .material-symbols-rounded,
.m3-nav-item:hover .material-symbols-rounded { font-variation-settings: 'FILL' 1, 'wght' 500; }

/* ---------- TOP APP BAR (mobile) ---------- */
.m3-topbar {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--md-surface-container-low);
  border-bottom: 1px solid var(--md-outline-variant);
  position: sticky; top: 0; z-index: 50;
}
@media (max-width: 960px) {
  .m3-topbar { display: flex; }
}

/* ---------- BUTTONS (M3 Expressive — bigger, springier) ---------- */
.m3-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: var(--shape-full);
  border: none;
  font-family: var(--font-plain);
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform var(--duration-medium) var(--motion-spring-default),
              box-shadow var(--duration-short) var(--motion-standard),
              background var(--duration-short) var(--motion-standard);
  user-select: none;
  text-decoration: none;
  min-height: 48px;
  position: relative;
  overflow: hidden;
}
.m3-btn:hover { transform: translateY(-1px); text-decoration: none; }
.m3-btn:active { transform: translateY(0) scale(0.97); }
.m3-btn:focus-visible { outline: 3px solid var(--md-primary); outline-offset: 2px; }

.m3-btn-filled       { background: var(--md-primary); color: var(--md-on-primary); box-shadow: var(--elev-1); }
.m3-btn-filled:hover { background: color-mix(in srgb, var(--md-primary) 92%, white); box-shadow: var(--elev-2); color: var(--md-on-primary); }

.m3-btn-tonal        { background: var(--md-secondary-container); color: var(--md-on-secondary-container); }
.m3-btn-tonal:hover  { background: color-mix(in srgb, var(--md-secondary-container) 85%, var(--md-primary)); color: var(--md-on-secondary-container); }

.m3-btn-tertiary     { background: var(--md-tertiary); color: var(--md-on-tertiary); box-shadow: var(--elev-1); }
.m3-btn-tertiary:hover { background: color-mix(in srgb, var(--md-tertiary) 90%, white); color: var(--md-on-tertiary); }

.m3-btn-outlined     { background: transparent; color: var(--md-primary); border: 1.5px solid var(--md-outline); }
.m3-btn-outlined:hover { background: color-mix(in srgb, var(--md-primary) 8%, transparent); border-color: var(--md-primary); }

.m3-btn-text         { background: transparent; color: var(--md-primary); padding: 14px 16px; }
.m3-btn-text:hover   { background: color-mix(in srgb, var(--md-primary) 10%, transparent); }

.m3-btn-error        { background: var(--md-error); color: var(--md-on-error); }
.m3-btn-error:hover  { background: color-mix(in srgb, var(--md-error) 92%, white); color: var(--md-on-error); }

.m3-btn-sm  { padding: 8px 16px; min-height: 36px; font-size: 0.8125rem; }
.m3-btn-lg  { padding: 18px 32px; min-height: 56px; font-size: 1rem; }
.m3-btn-block { width: 100%; }

.m3-btn .material-symbols-rounded { font-size: 20px; }

/* FAB — M3 Expressive uses a pillowy XL FAB */
.m3-fab {
  position: fixed;
  right: 24px; bottom: 24px;
  display: inline-flex; align-items: center; gap: 10px;
  padding: 18px 24px;
  border-radius: var(--shape-lg);
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  border: none;
  font-weight: 600; font-size: 1rem;
  box-shadow: var(--elev-3);
  cursor: pointer;
  z-index: 100;
  transition: transform var(--duration-medium) var(--motion-spring-default), box-shadow var(--duration-short) var(--motion-standard);
}
.m3-fab:hover { transform: translateY(-2px) scale(1.03); box-shadow: var(--elev-4); }
.m3-fab:active { transform: scale(0.97); }
.m3-fab .material-symbols-rounded { font-size: 24px; }

/* ---------- CARDS ---------- */
.m3-card {
  background: var(--md-surface-container-low);
  border-radius: var(--shape-lg);
  padding: 24px;
  transition: box-shadow var(--duration-medium) var(--motion-standard),
              transform var(--duration-medium) var(--motion-spring-default);
}
.m3-card-elevated { background: var(--md-surface-container-lowest); box-shadow: var(--elev-1); }
.m3-card-elevated:hover { box-shadow: var(--elev-2); transform: translateY(-2px); }
.m3-card-filled   { background: var(--md-surface-container-high); }
.m3-card-outlined { background: var(--md-surface); border: 1px solid var(--md-outline-variant); }

.m3-card-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.m3-card-title  { font-family: var(--font-brand); font-weight: 600; font-size: 1.25rem; margin: 0; color: var(--md-on-surface); }

/* ---------- KPI / STAT TILES ---------- */
.m3-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.m3-stat {
  background: var(--md-surface-container-low);
  border-radius: var(--shape-lg);
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: transform var(--duration-medium) var(--motion-spring-default), box-shadow var(--duration-medium) var(--motion-standard);
}
.m3-stat:hover { transform: translateY(-3px); box-shadow: var(--elev-2); }
.m3-stat::after {
  content: '';
  position: absolute;
  top: -40%; right: -20%;
  width: 180px; height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, currentColor 0%, transparent 70%);
  opacity: 0.07;
  pointer-events: none;
}
.m3-stat-icon {
  width: 52px; height: 52px;
  border-radius: var(--shape-md);
  display: grid; place-items: center;
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  margin-bottom: 14px;
}
.m3-stat-icon .material-symbols-rounded { font-size: 28px; font-variation-settings: 'FILL' 1; }
.m3-stat-label { font-size: 0.8125rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--md-on-surface-variant); margin-bottom: 6px; }
.m3-stat-value { font-family: var(--font-brand); font-weight: 700; font-size: clamp(1.75rem, 3.5vw, 2.25rem); color: var(--md-on-surface); line-height: 1.1; letter-spacing: -0.01em; }
.m3-stat-trend { font-size: 0.875rem; margin-top: 8px; display: flex; align-items: center; gap: 4px; }
.m3-stat-trend.up   { color: var(--md-success); }
.m3-stat-trend.down { color: var(--md-error); }

.m3-stat.tone-primary  .m3-stat-icon { background: var(--md-primary-container); color: var(--md-on-primary-container); }
.m3-stat.tone-tertiary .m3-stat-icon { background: var(--md-tertiary-container); color: var(--md-on-tertiary-container); }
.m3-stat.tone-secondary .m3-stat-icon { background: var(--md-secondary-container); color: var(--md-on-secondary-container); }

/* ---------- TEXT FIELDS (Filled style — M3) ---------- */
.m3-field {
  position: relative;
  margin-bottom: 16px;
}
.m3-field input,
.m3-field select,
.m3-field textarea {
  width: 100%;
  font-family: var(--font-plain);
  font-size: 1rem;
  padding: 24px 16px 8px;
  background: var(--md-surface-container-high);
  border: none;
  border-bottom: 2px solid var(--md-outline);
  border-radius: var(--shape-sm) var(--shape-sm) 0 0;
  color: var(--md-on-surface);
  transition: border-color var(--duration-short) var(--motion-standard), background var(--duration-short) var(--motion-standard);
  outline: none;
}
.m3-field input:hover,
.m3-field select:hover,
.m3-field textarea:hover { background: var(--md-surface-container-highest); }
.m3-field input:focus,
.m3-field select:focus,
.m3-field textarea:focus { border-bottom-color: var(--md-primary); border-bottom-width: 2px; }
.m3-field label {
  position: absolute;
  left: 16px; top: 18px;
  pointer-events: none;
  color: var(--md-on-surface-variant);
  font-size: 1rem;
  transition: all var(--duration-short) var(--motion-standard);
  background: transparent;
}
.m3-field input:focus + label,
.m3-field input:not(:placeholder-shown) + label,
.m3-field select:focus + label,
.m3-field select:not([value=""]) + label,
.m3-field textarea:focus + label,
.m3-field textarea:not(:placeholder-shown) + label {
  top: 6px; font-size: 0.75rem; font-weight: 600;
  color: var(--md-primary);
}
.m3-field-help { font-size: 0.75rem; color: var(--md-on-surface-variant); margin-top: 4px; padding-left: 16px; }

/* Outlined variant */
.m3-field-outlined input,
.m3-field-outlined select,
.m3-field-outlined textarea {
  background: transparent;
  border: 1.5px solid var(--md-outline);
  border-radius: var(--shape-xs);
  padding: 18px 16px;
}
.m3-field-outlined input:focus,
.m3-field-outlined select:focus,
.m3-field-outlined textarea:focus { border-color: var(--md-primary); border-width: 2px; padding: 17px 15px; }

/* Plain (legacy fallback) */
.m3-input {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid var(--md-outline-variant);
  border-radius: var(--shape-sm);
  background: var(--md-surface-container-lowest);
  font-size: 1rem;
  font-family: var(--font-plain);
  color: var(--md-on-surface);
  transition: border-color var(--duration-short) var(--motion-standard), box-shadow var(--duration-short) var(--motion-standard);
}
.m3-input:focus {
  outline: none;
  border-color: var(--md-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--md-primary) 20%, transparent);
}

/* ---------- CHIPS ---------- */
.m3-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--shape-sm);
  background: var(--md-surface-container-high);
  color: var(--md-on-surface);
  font-size: 0.8125rem;
  font-weight: 500;
  border: 1px solid var(--md-outline-variant);
  cursor: pointer;
  transition: all var(--duration-short) var(--motion-standard);
}
.m3-chip:hover { background: var(--md-surface-container-highest); }
.m3-chip.selected { background: var(--md-secondary-container); color: var(--md-on-secondary-container); border-color: transparent; }
.m3-chip.tone-success { background: color-mix(in srgb, var(--md-success) 15%, transparent); color: var(--md-success); border-color: transparent; }
.m3-chip.tone-warning { background: color-mix(in srgb, var(--md-warning) 18%, transparent); color: #b35900; border-color: transparent; }
.m3-chip.tone-error   { background: var(--md-error-container); color: var(--md-on-error-container); border-color: transparent; }

/* ---------- TABLES ---------- */
.m3-table-wrap {
  background: var(--md-surface-container-low);
  border-radius: var(--shape-lg);
  overflow: hidden;
  overflow-x: auto;
}
.m3-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}
.m3-table th {
  text-align: left;
  padding: 16px 20px;
  font-weight: 600;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--md-on-surface-variant);
  background: var(--md-surface-container);
  border-bottom: 1px solid var(--md-outline-variant);
  white-space: nowrap;
}
.m3-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--md-outline-variant);
  color: var(--md-on-surface);
}
.m3-table tbody tr { transition: background var(--duration-short) var(--motion-standard); }
.m3-table tbody tr:hover { background: var(--md-surface-container); }
.m3-table tbody tr:last-child td { border-bottom: none; }

/* ---------- ALERTS / SNACKBARS ---------- */
.m3-alert {
  padding: 16px 20px;
  border-radius: var(--shape-md);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.9375rem;
  border: 1px solid transparent;
}
.m3-alert.success { background: color-mix(in srgb, var(--md-success) 14%, var(--md-surface-container-low)); color: #1b5e20; border-color: color-mix(in srgb, var(--md-success) 30%, transparent); }
.m3-alert.error   { background: var(--md-error-container); color: var(--md-on-error-container); }
.m3-alert.warning { background: color-mix(in srgb, var(--md-warning) 16%, var(--md-surface-container-low)); color: #663c00; border-color: color-mix(in srgb, var(--md-warning) 30%, transparent); }
.m3-alert.info    { background: var(--md-secondary-container); color: var(--md-on-secondary-container); }
.m3-alert .material-symbols-rounded { font-size: 22px; }

/* ---------- DIVIDER ---------- */
.m3-divider { height: 1px; background: var(--md-outline-variant); border: none; margin: 24px 0; }

/* ---------- SEARCH BAR ---------- */
.m3-searchbar {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--md-surface-container-high);
  border-radius: var(--shape-full);
  padding: 8px 8px 8px 20px;
  transition: box-shadow var(--duration-short) var(--motion-standard);
}
.m3-searchbar:focus-within { box-shadow: var(--elev-2); }
.m3-searchbar input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 1rem;
  font-family: var(--font-plain);
  outline: none;
  color: var(--md-on-surface);
  padding: 8px 0;
}
.m3-searchbar .material-symbols-rounded { color: var(--md-on-surface-variant); }

/* ---------- MODAL / DIALOG ---------- */
.m3-scrim {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 16px;
  backdrop-filter: blur(4px);
}
.m3-scrim.open { display: flex; animation: scrim-in var(--duration-medium) var(--motion-standard); }
.m3-dialog {
  background: var(--md-surface-container-high);
  border-radius: var(--shape-xl);
  padding: 28px;
  max-width: 560px;
  width: 100%;
  box-shadow: var(--elev-4);
  animation: dialog-in var(--duration-medium) var(--motion-spring-default);
}
@keyframes scrim-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes dialog-in { from { transform: scale(0.85) translateY(20px); opacity: 0; } to { transform: scale(1) translateY(0); opacity: 1; } }

/* ---------- LOADING ---------- */
.m3-spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--md-surface-container-high);
  border-top-color: var(--md-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.m3-progress {
  height: 4px;
  background: var(--md-surface-container-high);
  border-radius: var(--shape-full);
  overflow: hidden;
  position: relative;
}
.m3-progress::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--md-primary);
  animation: progress-indet 1.4s var(--motion-emphasized) infinite;
  width: 30%;
}
@keyframes progress-indet {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(400%); }
}

/* ---------- AUTH SHELL (login / forgot pwd) ---------- */
.m3-auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at 15% 20%, color-mix(in srgb, var(--md-primary) 22%, transparent) 0%, transparent 50%),
    radial-gradient(circle at 85% 80%, color-mix(in srgb, var(--md-tertiary) 20%, transparent) 0%, transparent 50%),
    var(--md-background);
  position: relative;
  overflow: hidden;
}
.m3-auth-shell::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--md-primary), var(--md-tertiary));
  opacity: 0.06;
  top: -200px; left: -200px;
  filter: blur(60px);
  pointer-events: none;
}
.m3-auth-card {
  background: var(--md-surface-container-lowest);
  border-radius: var(--shape-xl);
  padding: clamp(24px, 5vw, 48px);
  width: 100%;
  max-width: 460px;
  box-shadow: var(--elev-3);
  position: relative;
  z-index: 1;
}
.m3-auth-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
  font-family: var(--font-brand);
  font-weight: 700;
  font-size: 1.5rem;
}
.m3-auth-brand .brand-mark {
  width: 48px; height: 48px;
  border-radius: var(--shape-md);
  background: linear-gradient(135deg, var(--md-primary), var(--md-tertiary));
  display: grid; place-items: center;
  color: white;
  font-weight: 700;
  font-size: 1.25rem;
  box-shadow: var(--elev-2);
}

/* ---------- UTILITY ---------- */
.m3-flex { display: flex; }
.m3-flex-col { display: flex; flex-direction: column; }
.m3-items-center { align-items: center; }
.m3-justify-between { justify-content: space-between; }
.m3-gap-2 { gap: 8px; }
.m3-gap-3 { gap: 12px; }
.m3-gap-4 { gap: 16px; }
.m3-gap-6 { gap: 24px; }
.m3-mt-2 { margin-top: 8px; }
.m3-mt-4 { margin-top: 16px; }
.m3-mt-6 { margin-top: 24px; }
.m3-mb-2 { margin-bottom: 8px; }
.m3-mb-4 { margin-bottom: 16px; }
.m3-mb-6 { margin-bottom: 24px; }
.m3-text-center { text-align: center; }
.m3-text-muted { color: var(--md-on-surface-variant); }

/* ---------- RIPPLE EFFECT ---------- */
.m3-ripple { position: relative; overflow: hidden; }
.m3-ripple::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, currentColor 0.5%, transparent 0.6%);
  opacity: 0;
  transform: scale(10);
  transition: transform 0s, opacity var(--duration-long) var(--motion-standard);
  pointer-events: none;
}
.m3-ripple:active::after { transform: scale(0); opacity: 0.15; transition: 0s; }

/* ---------- SCROLLBARS ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--md-outline-variant); border-radius: var(--shape-full); }
::-webkit-scrollbar-thumb:hover { background: var(--md-outline); }

/* ---------- PRINT ---------- */
@media print {
  .m3-rail, .m3-topbar, .m3-fab { display: none !important; }
  body { background: white; }
  .m3-card, .m3-stat, .m3-table-wrap { box-shadow: none; border: 1px solid #ddd; }
}