:root {
  --font-sans: "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-display: "Manrope", "Inter", "Segoe UI", sans-serif;
  --bg-app: #f4f7fb;
  --bg-surface: rgba(255, 255, 255, 0.84);
  --bg-surface-strong: #ffffff;
  --bg-highlight: linear-gradient(160deg, #dff7ff 0%, #edf8ff 100%);
  --bg-accent-soft: linear-gradient(160deg, #0f5169 0%, #1691b1 100%);
  --text-primary: #162230;
  --text-secondary: #617181;
  --text-on-dark: #f5fbff;
  --border-soft: rgba(20, 39, 58, 0.1);
  --border-strong: rgba(29, 168, 204, 0.3);
  --shadow-soft: 0 16px 38px rgba(21, 39, 62, 0.08);
  --brand: #14a8cc;
  --brand-strong: #0d6f88;
  --danger: #d84a42;
  --danger-soft: #ffe3e0;
  --success: #21a66e;
  --success-soft: #def7eb;
  --warning: #c58a21;
  --warning-soft: #fff1d3;
  --info: #2b83e6;
  --info-soft: #e3f0ff;
  --slate: #728295;
  --slate-soft: #edf2f7;
}

:root[data-theme="dark"] {
  --bg-app: #07111b;
  --bg-surface: rgba(16, 24, 36, 0.9);
  --bg-surface-strong: #121c28;
  --bg-highlight: linear-gradient(160deg, #122434 0%, #173447 100%);
  --bg-accent-soft: linear-gradient(160deg, #0f5f75 0%, #1db4d7 100%);
  --text-primary: #edf6ff;
  --text-secondary: #98abbe;
  --text-on-dark: #f7fbff;
  --border-soft: rgba(154, 187, 219, 0.12);
  --border-strong: rgba(83, 195, 220, 0.3);
  --shadow-soft: 0 20px 46px rgba(2, 8, 18, 0.34);
  --brand: #49c3de;
  --brand-strong: #a3eefe;
  --danger: #ff756b;
  --danger-soft: rgba(255, 117, 107, 0.16);
  --success: #69d7a6;
  --success-soft: rgba(105, 215, 166, 0.18);
  --warning: #f5c86d;
  --warning-soft: rgba(245, 200, 109, 0.14);
  --info: #8ab9ff;
  --info-soft: rgba(138, 185, 255, 0.16);
  --slate: #9eb1c4;
  --slate-soft: rgba(158, 177, 196, 0.16);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-sans);
  background:
    radial-gradient(circle at top right, rgba(20, 168, 204, 0.18), transparent 34%),
    radial-gradient(circle at bottom left, rgba(43, 131, 230, 0.1), transparent 30%),
    var(--bg-app);
  color: var(--text-primary);
  transition: background 160ms ease, color 160ms ease;
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  cursor: pointer;
  touch-action: manipulation;
}