/* =====================================================================
   ERPEL Design-System  —  Pure CSS, Design-Tokens, kein Build-Step.
   Whitelabel/Theming: ausschliesslich die Variablen hier unten aendern.
   (Umlaute in diesem Kommentar bewusst ASCII, da Werte-Datei; UI-Texte
    tragen ueberall echte Umlaute.)
   ===================================================================== */

/* --- Tokens: Hell (Default) --- */
:root {
    color-scheme: light;

    /* Marke / Akzent */
    --erpel-accent:        #0b66c3;
    --erpel-accent-hover:  #0954a3;
    --erpel-accent-fg:     #ffffff;

    /* Flaechen & Text */
    --erpel-bg:        #f4f6f9;
    --erpel-surface:   #ffffff;
    --erpel-surface-2: #eef1f5;
    --erpel-border:    #dfe4ea;
    --erpel-fg:        #1f2933;
    --erpel-muted:     #5d6b7a;

    /* Status (einheitliches Feedback) */
    --erpel-success:   #1e8e5a;
    --erpel-warning:   #b8860b;
    --erpel-danger:    #c0392b;
    --erpel-info:      #2c7be5;

    /* Typografie */
    --erpel-font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --erpel-font-mono: ui-monospace, "Cascadia Code", Consolas, monospace;
    --erpel-fs-base: 15px;
    --erpel-lh: 1.55;

    /* Masse */
    --erpel-space-1: .25rem;
    --erpel-space-2: .5rem;
    --erpel-space-3: .75rem;
    --erpel-space-4: 1rem;
    --erpel-space-5: 1.5rem;
    --erpel-space-6: 2rem;
    --erpel-radius:    10px;
    --erpel-radius-sm: 7px;
    --erpel-radius-pill: 999px;
    --erpel-shadow: 0 8px 30px rgba(16, 24, 40, .08);
    --erpel-topbar-h: 56px;
    --erpel-container: 1100px;
}

/* --- Tokens: Dunkel --- */
[data-theme="dark"] {
    color-scheme: dark;
    --erpel-accent:        #4aa3ff;
    --erpel-accent-hover:  #6cb6ff;
    --erpel-accent-fg:     #07203a;

    --erpel-bg:        #0f141a;
    --erpel-surface:   #1a222c;
    --erpel-surface-2: #222c38;
    --erpel-border:    #2c3845;
    --erpel-fg:        #e6edf3;
    --erpel-muted:     #9aa7b4;

    --erpel-shadow: 0 10px 34px rgba(0, 0, 0, .45);
}

/* --- Easter-Egg: Comic Sans (pro User) --- */
[data-font="comic"] {
    --erpel-font-sans: "Comic Sans MS", "Comic Sans", "Chalkboard SE", cursive;
}

/* --- Reset / Basis --- */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
    margin: 0;
    font-family: var(--erpel-font-sans);
    font-size: var(--erpel-fs-base);
    line-height: var(--erpel-lh);
    color: var(--erpel-fg);
    background: var(--erpel-bg);
    -webkit-font-smoothing: antialiased;
    transition: background .2s ease, color .2s ease;
}
a { color: var(--erpel-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 var(--erpel-space-4); }
kbd {
    font-family: var(--erpel-font-mono); font-size: .8em;
    background: var(--erpel-surface-2); border: 1px solid var(--erpel-border);
    border-bottom-width: 2px; border-radius: 6px; padding: .05em .4em;
}

/* --- App-Geruest: Topbar / Main / Footer --- */
.erpel-app { display: flex; flex-direction: column; min-height: 100%; }
.erpel-topbar {
    height: var(--erpel-topbar-h); display: flex; align-items: center; gap: var(--erpel-space-3);
    padding: 0 var(--erpel-space-5);
    background: var(--erpel-surface); border-bottom: 1px solid var(--erpel-border);
    position: sticky; top: 0; z-index: 10;
}
.erpel-brand { font-weight: 800; letter-spacing: .12em; color: var(--erpel-accent); font-size: 1.15rem; }
.erpel-topbar-spacer { flex: 1; }
.erpel-main { flex: 1; padding: var(--erpel-space-6) var(--erpel-space-5); }
.erpel-container { max-width: var(--erpel-container); margin: 0 auto; }
.erpel-footer {
    display: flex; justify-content: space-between; gap: var(--erpel-space-3); flex-wrap: wrap;
    padding: var(--erpel-space-4) var(--erpel-space-5);
    border-top: 1px solid var(--erpel-border); color: var(--erpel-muted); font-size: .85rem;
}

/* --- Hilfsklassen --- */
.erpel-muted { color: var(--erpel-muted); }

/* --- Buttons --- */
.btn {
    display: inline-flex; align-items: center; gap: var(--erpel-space-2);
    font: inherit; cursor: pointer; border: 1px solid var(--erpel-border);
    background: var(--erpel-surface); color: var(--erpel-fg);
    padding: .5rem .9rem; border-radius: var(--erpel-radius-sm);
    transition: background .15s, border-color .15s, color .15s;
}
.btn:hover { border-color: var(--erpel-accent); color: var(--erpel-accent); }
.btn-primary { background: var(--erpel-accent); border-color: var(--erpel-accent); color: var(--erpel-accent-fg); }
.btn-primary:hover { background: var(--erpel-accent-hover); border-color: var(--erpel-accent-hover); color: var(--erpel-accent-fg); }
.btn-ghost { background: transparent; }

.erpel-icon-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: 38px; height: 38px; font-size: 1.05rem; cursor: pointer;
    background: transparent; color: var(--erpel-fg);
    border: 1px solid var(--erpel-border); border-radius: var(--erpel-radius-sm);
}
.erpel-icon-btn:hover { border-color: var(--erpel-accent); }

/* Theme-abhaengige Icon-Sichtbarkeit */
[data-theme="light"] [data-when-theme="dark"] { display: none; }
[data-theme="dark"] [data-when-theme="light"] { display: none; }

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

/* --- Pills --- */
.pill {
    display: inline-block; border: 1px solid var(--erpel-border); color: var(--erpel-muted);
    border-radius: var(--erpel-radius-pill); padding: .3rem .75rem; font-size: .8rem;
}
.erpel-pills { display: flex; flex-wrap: wrap; gap: var(--erpel-space-2); }

/* --- Hero (Startseite) --- */
.erpel-hero { text-align: center; max-width: 540px; margin: 4vh auto 0; }
.erpel-hero-logo { font-size: 2.6rem; font-weight: 800; letter-spacing: .14em; color: var(--erpel-accent); }
.erpel-hero-tag { color: var(--erpel-muted); margin: .3rem 0 1.4rem; }
.erpel-hero .erpel-pills { justify-content: center; margin-top: var(--erpel-space-4); }
.erpel-actions { margin-top: var(--erpel-space-5); }
.erpel-hint { margin-top: var(--erpel-space-5); font-size: .85rem; }

/* --- Responsive --- */
@media (max-width: 640px) {
    .erpel-main { padding: var(--erpel-space-5) var(--erpel-space-4); }
    .erpel-topbar { padding: 0 var(--erpel-space-4); }
    .card { padding: var(--erpel-space-5); }
    .erpel-hero-logo { font-size: 2.2rem; }
}