/* =========================================================================
   FLT Telefon-KI – Basis: Schrift, Reset, Typografie, Fokus, Bewegung
   ========================================================================= */

/* Inter (variabel, selbst gehostet, SIL OFL 1.1 – siehe /fonts/OFL.txt) */
@font-face {
    font-family: 'InterVariable';
    font-style: normal;
    font-weight: 100 900;
    font-display: swap;
    src: url('/fonts/inter-latin-wght-normal.woff2') format('woff2-variations'),
        url('/fonts/inter-latin-wght-normal.woff2') format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329,
        U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
    font-family: 'InterVariable';
    font-style: normal;
    font-weight: 100 900;
    font-display: swap;
    src: url('/fonts/inter-latin-ext-wght-normal.woff2') format('woff2-variations'),
        url('/fonts/inter-latin-ext-wght-normal.woff2') format('woff2');
    unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329,
        U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

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

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    color-scheme: light;
    scroll-padding-top: calc(var(--sticky-top) + 16px);
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    font-feature-settings: 'cv11', 'calt';
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4,
h5,
h6,
p,
figure,
blockquote,
dl,
dd {
    margin: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--weight-semibold);
    line-height: var(--leading-snug);
    letter-spacing: var(--tracking-tight);
    color: var(--color-text);
}

h1 { font-size: var(--text-3xl); letter-spacing: var(--tracking-tighter); }
h2 { font-size: var(--text-xl); }
h3 { font-size: var(--text-md); }
h4 { font-size: var(--text-base); }

ul,
ol {
    margin: 0;
    padding-left: 1.25em;
}

img,
video,
canvas {
    display: block;
    max-width: 100%;
    height: auto;
}

svg {
    flex-shrink: 0;
}

button,
input,
select,
textarea {
    font: inherit;
    color: inherit;
    letter-spacing: inherit;
}

button {
    cursor: pointer;
}

fieldset {
    margin: 0;
    padding: 0;
    border: 0;
    min-width: 0;
}

legend {
    padding: 0;
}

table {
    border-collapse: collapse;
}

hr {
    height: 1px;
    margin: var(--space-6) 0;
    border: 0;
    background: var(--color-border);
}

strong,
b {
    font-weight: var(--weight-semibold);
}

small {
    font-size: var(--text-xs);
}

code,
kbd,
samp,
pre {
    font-family: var(--font-mono);
}

summary {
    cursor: pointer;
}

[hidden] {
    display: none !important;
}

/* --- Links ------------------------------------------------------------- */
a {
    color: var(--color-link);
    text-decoration: underline;
    text-decoration-color: rgb(29 78 216 / 0.3);
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
    transition: color var(--duration-fast) var(--ease-standard), text-decoration-color var(--duration-fast) var(--ease-standard);
}

a:hover {
    color: var(--color-accent-hover);
    text-decoration-color: currentColor;
}

/* --- Fokus: sichtbar nur bei Tastaturbedienung ------------------------- */
:focus-visible {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

::selection {
    background: rgb(37 99 235 / 0.16);
}

/* --- Barrierefreiheit -------------------------------------------------- */
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.skip-link {
    position: fixed;
    top: 8px;
    left: 8px;
    z-index: var(--z-skip);
    padding: 8px 14px;
    border-radius: var(--radius-md);
    background: var(--color-primary);
    color: var(--color-text-inverse);
    font-weight: var(--weight-medium);
    text-decoration: none;
    transform: translateY(-160%);
    transition: transform var(--duration) var(--ease-out);
}

.skip-link:focus {
    transform: none;
    color: var(--color-text-inverse);
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        transition-delay: 0s !important;
        scroll-behavior: auto !important;
    }
}

/* Beim Laden keine Übergänge: sonst animieren Farben/Rahmen sichtbar vom
   Browser-Standard zum Endwert („Aufblitzen“). js/app.js setzt .is-ready nach
   dem load-Ereignis; ohne JS bleibt die Oberfläche einfach ohne Übergänge. */
html:not(.is-ready) *,
html:not(.is-ready) *::before,
html:not(.is-ready) *::after {
    transition: none !important;
}