/* ============================================================
   Folooo Transactions – Base stylesheet
   Mobile-first. Modern, minimal, high-end.
   The ONLY brand input is --color-primary (injected from config in
   the <head>). Everything else is derived from it or from a neutral
   scale, so re-theming is a single env change.
   ============================================================ */

/* ---- Design tokens ---------------------------------------- */
:root {
  /* --color-primary is injected inline from PRIMARY_COLOR. */

  /* Derived primary shades (color-mix keeps them in sync). */
  --color-primary-dark: color-mix(in srgb, var(--color-primary) 82%, #000);
  --color-primary-soft: color-mix(in srgb, var(--color-primary) 12%, #fff);
  --color-primary-ring: color-mix(in srgb, var(--color-primary) 35%, transparent);

  /* Neutral scale. */
  --color-bg: #f5f6fa;
  --color-surface: #ffffff;
  --color-border: #e6e8ef;
  --color-text: #1c1f2a;
  --color-text-muted: #6b7280;
  --color-danger: #d9364c;
  --color-danger-soft: #fdecee;

  /* Typography. */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, "Apple Color Emoji", "Segoe UI Emoji", sans-serif;

  /* Spacing scale (generous on purpose). */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;

  /* Radii + shadows (soft, high-end). */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(20, 23, 40, 0.05);
  --shadow-md: 0 8px 24px rgba(20, 23, 40, 0.08);
  --shadow-lg: 0 20px 50px rgba(20, 23, 40, 0.12);

  --maxw: 1080px;
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.55;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3,
p,
ul {
  margin: 0;
}

ul {
  list-style: none;
  padding: 0;
}

/* ---- Layout ----------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.main {
  padding-block: var(--space-7);
}

/* ---- Header ----------------------------------------------- */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  color: var(--color-text);
}

.brand--center {
  justify-content: center;
  margin-bottom: var(--space-4);
}

.brand__logo {
  height: 34px;
  width: auto;
}

.brand__name {
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

/* ---- Language switcher ------------------------------------ */
.lang-switch {
  display: inline-flex;
  gap: var(--space-1);
  background: var(--color-bg);
  padding: var(--space-1);
  border-radius: 999px;
  border: 1px solid var(--color-border);
}

.lang-switch__item {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  border-radius: 999px;
  line-height: 1;
  transition: background 0.15s ease, color 0.15s ease;
}

.lang-switch__flag {
  font-size: 1em;
  line-height: 1;
}

.lang-switch__item:hover {
  color: var(--color-text);
}

.lang-switch__item.is-active {
  background: var(--color-surface);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

/* ---- Cards ------------------------------------------------ */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-6);
}

.card__title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-5);
}

/* ---- Form fields ------------------------------------------ */
.field {
  margin-bottom: var(--space-4);
}

.field__label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.field__control {
  width: 100%;
  font: inherit;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  appearance: none;
}

select.field__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' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-7);
  cursor: pointer;
}

.field__control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-ring);
}

/* ---- Buttons ---------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-5);
  transition: transform 0.05s ease, background 0.15s ease, box-shadow 0.15s ease;
}

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

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

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

.btn--ghost {
  background: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text);
}

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

.btn--block {
  width: 100%;
}

/* ---- Alerts ----------------------------------------------- */
.alert {
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  font-size: 0.9rem;
  margin-bottom: var(--space-4);
}

.alert--error {
  background: var(--color-danger-soft);
  color: var(--color-danger);
  border: 1px solid color-mix(in srgb, var(--color-danger) 25%, #fff);
}

/* ---- Footer ----------------------------------------------- */
.site-footer {
  padding-block: var(--space-6);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-8);
}

.site-footer__text {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  text-align: center;
}

/* ---- Error page ------------------------------------------- */
.error-card {
  max-width: 560px;
  margin-inline: auto;
  text-align: center;
}

.error-card__status {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.error-card__title {
  font-size: 1.3rem;
  margin-bottom: var(--space-3);
}

.error-card__text {
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.error-card__details {
  text-align: left;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  font-size: 0.78rem;
  overflow-x: auto;
  margin-bottom: var(--space-5);
  white-space: pre-wrap;
  word-break: break-word;
}
