/* ZekiKod - Giriş ekranı "Yapay zekaya sor" tanıtım asistanı (js/zk-tanitim.js).
   Renkler mt-tokens.css'teki --mt-* token'larından; koyu tema mt-tokens'ın kendi
   koyu değerleriyle gelir. Tek yeni renk, düğmenin dikkat çeken degradesi (violet→blue). */
:root {
    --zk-tn-degrade: linear-gradient(135deg, #7C3AED 0%, #2563EB 55%, #0EA5E9 100%);
    --zk-tn-golge: 0 12px 32px -8px rgba(37, 99, 235, .55);
}

#zk-tanitim-dugme {
    position: fixed;
    right: 28px;
    bottom: 28px;
    z-index: 1200;
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 340px;
    padding: 14px 20px 14px 14px;
    border: 0;
    border-radius: 999px;
    background: var(--zk-tn-degrade);
    color: #fff;
    font-family: var(--mt-font, "Segoe UI", system-ui, sans-serif);
    text-align: left;
    cursor: pointer;
    box-shadow: var(--zk-tn-golge);
    animation: zk-tn-nabiz 2.4s ease-in-out infinite;
    transition: transform .15s ease, opacity .15s ease;
}
#zk-tanitim-dugme:hover { transform: translateY(-2px); }
#zk-tanitim-dugme:focus-visible { outline: 3px solid #93C5FD; outline-offset: 3px; }
#zk-tanitim-dugme.zk-gizle { opacity: 0; pointer-events: none; transform: scale(.9); }
#zk-tanitim-dugme .zk-tn-ikon {
    flex: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: rgba(255, 255, 255, .18);
}
#zk-tanitim-dugme .zk-tn-metin { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
#zk-tanitim-dugme b { font-size: 15px; font-weight: 700; line-height: 1.2; }
#zk-tanitim-dugme small { font-size: 12px; line-height: 1.3; opacity: .92; }

@keyframes zk-tn-nabiz {
    0%, 100% { box-shadow: var(--zk-tn-golge), 0 0 0 0 rgba(124, 58, 237, .45); }
    50% { box-shadow: var(--zk-tn-golge), 0 0 0 12px rgba(124, 58, 237, 0); }
}
@media (prefers-reduced-motion: reduce) {
    #zk-tanitim-dugme { animation: none; }
}

#zk-tanitim {
    position: fixed;
    right: 28px;
    bottom: 28px;
    z-index: 1201;
    width: min(420px, calc(100vw - 32px));
    height: min(640px, calc(100vh - 56px));
    display: none;
    flex-direction: column;
    background: var(--mt-bg, #fff);
    color: var(--mt-fg, #111827);
    border: 1px solid var(--mt-border, #E5E7EB);
    border-radius: 16px;
    box-shadow: 0 24px 48px -12px rgba(17, 24, 39, .28);
    font-family: var(--mt-font, "Segoe UI", system-ui, sans-serif);
    font-size: 14px;
    overflow: hidden;
}
#zk-tanitim.zk-acik { display: flex; }
#zk-tanitim * { box-sizing: border-box; }

#zk-tanitim .zk-tn-bas {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    background: var(--zk-tn-degrade);
    color: #fff;
}
#zk-tanitim .zk-tn-bas .zk-tn-ikon {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: rgba(255, 255, 255, .18);
    flex: none;
}
#zk-tanitim .zk-tn-bas div { flex: 1; min-width: 0; display: flex; flex-direction: column; }
#zk-tanitim .zk-tn-bas b { font-size: 15px; }
#zk-tanitim .zk-tn-bas small { font-size: 12px; opacity: .9; }
#zk-tanitim .zk-tn-kapat {
    border: 0;
    background: rgba(255, 255, 255, .16);
    color: #fff;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
}
#zk-tanitim .zk-tn-kapat:hover { background: rgba(255, 255, 255, .28); }

#zk-tanitim .zk-tn-mesajlar {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: var(--mt-bg-subtle, #F9FAFB);
}
#zk-tanitim .zk-tn-m {
    max-width: 88%;
    padding: 10px 12px;
    border-radius: 12px;
    line-height: 1.45;
    word-wrap: break-word;
}
#zk-tanitim .zk-tn-m p { margin: 0 0 6px; }
#zk-tanitim .zk-tn-m p:last-child { margin-bottom: 0; }
#zk-tanitim .zk-tn-m ul { margin: 4px 0 6px; padding-left: 18px; }
#zk-tanitim .zk-tn-a {
    align-self: flex-start;
    background: var(--mt-bg, #fff);
    border: 1px solid var(--mt-border, #E5E7EB);
    border-bottom-left-radius: 4px;
}
#zk-tanitim .zk-tn-k {
    align-self: flex-end;
    background: var(--mt-primary, #2563EB);
    color: #fff;
    border-bottom-right-radius: 4px;
}
#zk-tanitim .zk-tn-h {
    align-self: stretch;
    max-width: none;
    background: #FEF2F2;
    color: #B91C1C;
    border: 1px solid #FECACA;
    font-size: 13px;
}
#zk-tanitim .zk-tn-yaziyor { display: flex; gap: 4px; padding: 12px 14px; }
#zk-tanitim .zk-tn-yaziyor span {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--mt-fg-faint, #6B7280);
    animation: zk-tn-nokta 1.2s infinite ease-in-out;
}
#zk-tanitim .zk-tn-yaziyor span:nth-child(2) { animation-delay: .15s; }
#zk-tanitim .zk-tn-yaziyor span:nth-child(3) { animation-delay: .3s; }
@keyframes zk-tn-nokta { 0%, 80%, 100% { opacity: .3; transform: translateY(0); } 40% { opacity: 1; transform: translateY(-3px); } }

#zk-tanitim .zk-tn-demo {
    align-self: stretch;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid #C7D2FE;
    background: #EEF2FF;
    color: #312E81;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
#zk-tanitim .zk-tn-demo small { color: #4338CA; font-size: 12px; }
#zk-tanitim .zk-tn-demo-dugmeler { display: flex; gap: 8px; margin-top: 6px; }
#zk-tanitim .zk-tn-demo button,
#zk-tanitim .zk-tn-giris button {
    border: 0;
    border-radius: 8px;
    padding: 8px 14px;
    background: var(--mt-primary, #2563EB);
    color: #fff;
    font: inherit;
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
}
#zk-tanitim .zk-tn-demo button.zk-tn-ikincil {
    background: transparent;
    color: #4338CA;
    border: 1px solid #A5B4FC;
}

#zk-tanitim .zk-tn-oneriler {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 0 16px;
    background: var(--mt-bg-subtle, #F9FAFB);
}
#zk-tanitim .zk-tn-oneriler:not(:empty) { padding-bottom: 12px; }
#zk-tanitim .zk-tn-oneri {
    border: 1px solid var(--mt-input, #D1D5DB);
    background: var(--mt-bg, #fff);
    color: var(--mt-fg-secondary, #374151);
    border-radius: 999px;
    padding: 6px 12px;
    font: inherit;
    font-size: 12px;
    cursor: pointer;
}
#zk-tanitim .zk-tn-oneri:hover { border-color: var(--mt-primary, #2563EB); color: var(--mt-primary, #2563EB); }

#zk-tanitim .zk-tn-giris {
    display: flex;
    gap: 8px;
    padding: 12px;
    border-top: 1px solid var(--mt-border, #E5E7EB);
    background: var(--mt-bg, #fff);
    margin: 0;
}
#zk-tanitim .zk-tn-giris input {
    flex: 1;
    min-width: 0;
    height: 38px;
    padding: 0 12px;
    border: 1px solid var(--mt-input, #D1D5DB);
    border-radius: 8px;
    background: var(--mt-bg, #fff);
    color: var(--mt-fg, #111827);
    font: inherit;
}
#zk-tanitim .zk-tn-giris input:focus { outline: none; border-color: var(--mt-ring, #3B82F6); box-shadow: var(--mt-ring-shadow, 0 0 0 1px #3B82F6); }

/* Koyu tema: kırmızı/indigo kutuların açık zeminleri koyu karşılıklarına döner. */
html.dark #zk-tanitim .zk-tn-h { background: rgba(185, 28, 28, .16); color: #FCA5A5; border-color: rgba(248, 113, 113, .35); }
html.dark #zk-tanitim .zk-tn-demo { background: rgba(99, 102, 241, .14); color: #E0E7FF; border-color: rgba(129, 140, 248, .4); }
html.dark #zk-tanitim .zk-tn-demo small,
html.dark #zk-tanitim .zk-tn-demo button.zk-tn-ikincil { color: #C7D2FE; }

/* Geniş ekran: düğme sağdaki tanıtım panelinin içinde, özellik listesinin altında (konumu JS verir);
   sohbet paneli o panelin yerini kaplar. */
#zk-tanitim-dugme.zk-tn-panelde {
    right: auto;
    bottom: auto;
    max-width: 420px;
    padding: 16px 24px 16px 16px;
    border-radius: 16px;
}
#zk-tanitim-dugme.zk-tn-panelde .zk-tn-ikon { width: 44px; height: 44px; }
#zk-tanitim-dugme.zk-tn-panelde b { font-size: 16px; }
#zk-tanitim-dugme.zk-tn-panelde small { font-size: 13px; }
#zk-tanitim.zk-tn-panelde { right: auto; bottom: auto; border-radius: var(--mt-radius-lg, 16px); }

/* Dar ekran: düğme alt kenarda tam genişlik şerit, panel tam ekrana yakın. */
@media (max-width: 640px) {
    #zk-tanitim-dugme { left: 16px; right: 16px; bottom: 16px; max-width: none; border-radius: 16px; }
    #zk-tanitim { right: 8px; left: 8px; bottom: 8px; width: auto; height: calc(100vh - 16px); }
}