/* ==========================================================================
   Design Tokens and Theming
   ========================================================================== */

:root {
  /* Brand */
  --primary: #0091ea;
  --primary-600: #007ccc;
  --primary-700: #0066a8;

  /* Neutrals */
  --text: #1b1f24;
  --muted: #5a6370;
  --white: #ffffff;
  --surface: #ffffff;
  --surface-2: #f5f7fb;
  --border: #c7cdd8;

  /* Accents */
  --accent: #546e7a;
  --error: #ff5522;

  /* Backgrounds */
  --background: #f5f5f6;
  --background-accent: #e8f2fb;

  /* Effects */
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .06);
  --shadow-md: 0 6px 16px rgba(16, 24, 40, .12);
  --focus: 3px solid rgba(0, 145, 234, .4);

  /* Radius and Spacing */
  --radius: 12px;
  --radius-sm: 8px;
  --space-2xs: 4px;
  --space-xs: 6px;
  --space-sm: 10px;
  --space-md: 20px;
  --space-lg: 28px;
  --space-xl: 40px;

  /* Typography */
  --font-ui: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
  --font-size: 16px;

  /* Opt into user color schemes */
  color-scheme: light dark;
}

/* Dark theme via user preference */
@media (prefers-color-scheme: dark) {
  :root {
    --text: #e9edf4;
    --muted: #aab4c3;
    --surface: #131720;
    --surface-2: #0f131b;
    --background: #0b0e14;
    --background-accent: #0f1822;
    --border: #2a3443;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.45);
    --shadow-md: 0 8px 24px rgba(0,0,0,.5);
    --focus: 3px solid rgba(0, 145, 234, .55);
  }
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==========================================================================
   Base and Reset
   ========================================================================== */

* { box-sizing: border-box; }

html, body, #app {
  margin: 0;
  padding: 0;
  height: 100%;
}

html {
  font-size: 100%;
}

body {
  font-family: var(--font-ui);
  font-size: var(--font-size);
  color: var(--text);
  background: var(--background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  accent-color: var(--primary);
}

/* Utilities */
.text-center { text-align: center; }
.hide-xs { display: none; }
@media (min-width: 480px) { .hide-xs { display: initial; } }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 1px, 1px);
  white-space: nowrap; border: 0;
}

/* Focus states (WCAG-friendly) */
:where(a, button, [role="button"], input, select, textarea):focus-visible {
  outline: var(--focus);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ==========================================================================
   Headings and Text
   ========================================================================== */

h2 {
  color: var(--primary);
  text-transform: uppercase;
  font-weight: 700;
  font-size: 1.5rem;
  margin: var(--space-md) 0;
}

/* Muted text helper */
.muted { color: var(--muted); }

/* ==========================================================================
   Forms
   ========================================================================== */

form {
  display: flex;
  flex-direction: column;
  margin: var(--space-sm) var(--space-md);
  gap: var(--space-xs);
}

label {
  color: var(--muted);
  text-transform: uppercase;
  font-size: 80%;
  letter-spacing: .02em;
}

input, select, textarea {
  height: 44px;
  padding: 0 var(--space-sm);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-sm);
  transition: border-color .18s ease, box-shadow .18s ease, background-color .18s ease;
}

input::placeholder,
textarea::placeholder { color: color-mix(in oklab, var(--muted) 80%, var(--text)); }

input:focus {
  border-color: var(--primary-600);
  outline: 0;
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--primary) 20%, transparent);
}

.error {
  color: var(--error);
  margin: var(--space-2xs) 0;
}

.error:empty { display: none; }

/* Native UI controls pick up brand via accent-color */
input[type="checkbox"],
input[type="radio"],
input[type="range"],
progress { accent-color: var(--primary); }

/* ==========================================================================
   Buttons
   ========================================================================== */

button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  background-color: var(--primary);
  color: var(--white);
  height: 40px;
  padding: 0 var(--space-md);
  border: 0;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  min-width: 110px;
  margin: var(--space-sm) 0;
  box-shadow: var(--shadow-sm);
  transition: filter .12s ease, transform .12s ease, background-color .12s ease;
}

button:hover,
.btn:hover { filter: brightness(110%); cursor: pointer; }

button:active,
.btn:active { transform: translateY(1px); }

button:focus-visible,
.btn:focus-visible { outline: var(--focus); }

.button-alt,
.btn-ghost {
  background-color: transparent;
  color: var(--primary);
  border: 1px solid color-mix(in oklab, var(--primary) 40%, var(--border));
  box-shadow: none;
}

.btn-icon {
  min-width: auto;
  width: 40px; height: 40px;
  padding: 0;
  border-radius: 50%;
}

/* ==========================================================================
   Login Page
   ========================================================================== */

.login-page {
  display: flex;
  height: 100%;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(800px 500px at 20% -10%, color-mix(in oklab, var(--primary) 30%, transparent), transparent 60%),
    radial-gradient(800px 500px at 120% 10%, color-mix(in oklab, var(--primary-600) 20%, transparent), transparent 55%),
    linear-gradient(var(--primary), var(--primary-600));
}

.login-container {
  flex: auto;
  max-width: 520px;
  max-height: 100%;
  overflow: auto;
  padding: var(--space-sm);
}

.login-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  margin: var(--space-md);
  text-align: center;
}

.login-logo {
  height: 80px;
  vertical-align: middle;
}

.login-content {
  background-color: var(--surface);
  padding: var(--space-md);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
}

.login-separator {
  position: relative;
  top: 0.5em;
  border-top: 1px solid var(--border);
  opacity: 0.6;
  margin: var(--space-md) 0;
}

.login-separator > span {
  position: relative;
  top: -0.6em;
  background-color: var(--surface);
  padding: 0 var(--space-sm);
  color: var(--muted);
}

/* ==========================================================================
   Dashboard
   ========================================================================== */

.dashboard-page {
  display: flex;
  height: 100%;
  flex-direction: column;
}

/* Make content responsive to its own width (container queries) */
.dashboard-content {
  width: 100%;
  max-width: 960px;
  align-self: center;
  padding: var(--space-sm);
  container-type: inline-size;
  container-name: dash;
}

.dashboard-header {
  background-color: var(--accent);
  padding: var(--space-xs) var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.dashboard-header button {
  border: 1px solid color-mix(in oklab, var(--white) 35%, transparent);
  background-color: transparent;
  color: var(--white);
}

.dashboard-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  margin: 0 var(--space-sm);
}

.dashboard-logo {
  height: 60px;
  vertical-align: middle;
  padding: var(--space-xs);
}

.balance {
  background: radial-gradient(circle at center, var(--primary), var(--primary-600));
  text-align: center;
  padding: var(--space-md) var(--space-sm);
}

.balance > div {
  color: var(--white);
  padding-top: var(--space-2xs);
  text-transform: uppercase;
  letter-spacing: .08em;
}

.balance > span {
  color: var(--white);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
}

.transactions-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 var(--space-sm);
  color: var(--accent);
  font-weight: 800;
  font-size: 1.25rem;
  gap: var(--space-sm);
}

.transactions-title > div {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ==========================================================================
   Transactions Table
   ========================================================================== */

.transactions-table {
  width: 100%;
  font-size: 1.05rem;
  padding: var(--space-sm);
  margin: 0;
  border-spacing: 0;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.transactions-table thead th {
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-weight: 700;
}

.transactions-table tr:nth-child(even) {
  background-color: var(--surface-2);
}

.transactions-table td,
.transactions-table th {
  padding: var(--space-xs) var(--space-sm);
  text-align: left;
}

.transactions-table td:first-child,
.transactions-table th:first-child {
  width: 1%;
  white-space: nowrap;
}

.transactions-table td:last-child,
.transactions-table th:last-child {
  text-align: right;
}

/* Condense table in narrow containers */
@container dash (width < 520px) {
  .transactions-table {
    font-size: 1rem;
    border-radius: var(--radius-sm);
    padding: var(--space-xs);
  }
}

/* ==========================================================================
   Dialog (Modal)
   ========================================================================== */

.dialog {
  display: none;
  position: fixed;
  inset: 0;
  overflow: auto;
  background-color: rgba(0,0,0,.45);
  justify-content: center;
  align-items: flex-start;
  padding: var(--space-sm);
  z-index: 1000;
}

.dialog.show { display: flex; }

.dialog-content {
  flex: auto;
  background-color: var(--surface);
  color: var(--text);
  max-width: 520px;
  max-height: 100%;
  padding: var(--space-md);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  margin-top: var(--space-xl);
  transform: translateY(-8px);
  animation: dialogIn .25s ease-out both;
}

@keyframes dialogIn {
  from { opacity: 0; transform: translateY(-14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.dialog-buttons {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (min-width: 480px) {
  .login-content,
  .dialog-content {
    border-radius: var(--radius);
  }
}

@media (min-width: 768px) {
  .dashboard-content {
    max-width: 900px;
  }
}

/* ==========================================================================
   Legacy compatibility mappings (existing class names)
   ========================================================================== */

.button-alt { /* keep existing alias */
  background-color: transparent;
  color: var(--primary);
  border: 1px solid color-mix(in oklab, var(--primary) 40%, var(--border));
}

/* Keep original variable names for backward compatibility where possible */
:root {
  --space-xs: var(--space-xs);
  --space-sm: var(--space-sm);
  --space-md: var(--space-md);
  --space-xl: var(--space-xl);
}