/* usual root variable set */
:root {
  --font-ui: "Inter", "Roboto", system-ui, sans-serif;
  --font-jp: "Noto Sans JP", "Zen Kaku Gothic New", sans-serif;
  --font-accent: "Outfit", "Inter", sans-serif;

  --brand-1: #b59aff;
  --brand-2: #8a6cff;

  --accent-success: #6fcdb4;
  --accent-warning: #d4b07a;
  --accent-danger: #a96a9c;

  --bg: #080a0f;
  --panel: rgba(255, 255, 255, 0.03);
  --panel-deep: rgba(255, 255, 255, 0.06);

  --fg: #f5f6fa;
  --fg-muted: rgba(245, 246, 250, 0.55);
  --fg-inverse: #080a0f;

  --radius: 8px;
  --shadow: 0 0 18px rgba(150, 120, 255, 0.28);

  --space-1: 0.6rem;
  --space-2: 1.2rem;
  --space-3: 2rem;

  --btn-primary-bg: var(--brand-2);
  --btn-primary-hover: var(--brand-1);
  --btn-primary-fg: #fff;

  --btn-ghost-bg: transparent;
  --btn-ghost-border: rgba(255, 255, 255, 0.18);
  --btn-ghost-hover: rgba(255, 255, 255, 0.12);
  --btn-ghost-fg: var(--fg);

  --btn-danger-bg: #a96a9c;
  --btn-danger-hover: #b97ab0;
  --btn-danger-fg: #fff;

  --btn-icon-bg: rgba(255, 255, 255, 0.06);
  --btn-icon-hover: rgba(255, 255, 255, 0.14);

  --form-bg: rgba(255, 255, 255, 0.04);
  --form-bg-focus: rgba(255, 255, 255, 0.08);
  --form-border: rgba(255, 255, 255, 0.12);
  --form-border-focus: var(--brand-1);

  --select-arrow: #ffffff;

  --modal-bg: rgba(255, 255, 255, 0.05);
  --modal-backdrop: rgba(0, 0, 0, 0.65);
  --modal-btn: var(--brand-2);
  --modal-btn-hover: var(--brand-1);
  --modal-btn-cancel: #3a3a3a;
  --modal-btn-cancel-hover: #4a4a4a;

  --scroll-track: rgba(255, 255, 255, 0.05);
  --scroll-thumb: var(--brand-2);
  --scroll-thumb-hover: var(--brand-1);
  --scroll-size: 8px;
  --scroll-radius: 6px;
}

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

html {
  font-size: 62.5%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-jp), var(--font-ui);
}

/* Font size adjustment */
h2 {
  font-size: 2.4rem;
}

h3 {
  font-size: 2rem;
}

p {
  font-size: 1.6rem;
}

/* Basic 1column template */
.app-header {
  height: 5rem;
  display: flex;
  align-items: center;
  padding: 0 var(--space-3);

  background: var(--panel-deep);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);

  position: sticky;
  top: 0;
  z-index: 999;
}

.header-title {
  font-family: var(--font-accent);
  font-size: 1.6rem;
  font-weight: 600;
}

.main-wrapper.single-column {
  display: flex;
  justify-content: center;
}

.col-single {
  width: 100%;
  max-width: 1080px;

  display: flex;
  flex-direction: column;

  background: var(--panel);
  min-height: 0;
}

.col-content {
  flex: 1;
  padding: var(--space-3);
  overflow-y: auto;

  display: flex;
  align-items: center;
  flex-direction: column;
  gap: var(--space-3);
  min-height: 0;
}

/* Diagnostic app introduction */
.diagnosis-intro {
  text-align: center;
  padding: 0 2rem;
}