:root {
    --adv-blue: #1559a6;
    --adv-blue-dark: #123f73;
    --adv-blue-light: #eef5fc;
    --adv-border: #d9e5f1;
    --adv-text: #263746;
    --adv-muted: #667788;
    --adv-white: #ffffff;
    --adv-green: #2d7d5a;
    --adv-green-light: #edf8f2;
    --adv-amber: #a65d00;
    --adv-amber-light: #fff7e8;
    --adv-red: #a63a3a;
    --adv-red-light: #fff0f0;
    --adv-violet: #6842a0;
    --adv-violet-light: #f4effc;
    --adv-slate: #526475;
    --adv-slate-light: #f2f5f7;
}

.adv-box {
    position: relative;
    display: grid;
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 18px;
    margin: 30px 0;
    padding: 22px 24px;
    border: 1px solid var(--adv-border);
    border-left-width: 6px;
    border-radius: 14px;
    background: var(--adv-white);
    box-shadow: 0 8px 24px rgba(18, 63, 115, 0.07);
}
.adv-box__icon { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 50%; font-size: 24px; font-weight: 800; }
.adv-box__icon::before { line-height: 1; }
.adv-box__title { margin: 0 0 7px; font-size: 20px; line-height: 1.25; font-weight: 800; }
.adv-box__text { color: var(--adv-text); }
.adv-box__text > :first-child { margin-top: 0; }
.adv-box__text > :last-child { margin-bottom: 0; }

.adv-box--rada { border-left-color: var(--adv-blue); background: linear-gradient(135deg, #f7fbff, var(--adv-blue-light)); }
.adv-box--rada .adv-box__icon { background: #dcecff; color: var(--adv-blue-dark); }
.adv-box--rada .adv-box__icon::before { content: "✓"; }
.adv-box--rada .adv-box__title { color: var(--adv-blue-dark); }

.adv-box--tip, .adv-box--success { border-left-color: var(--adv-green); background: var(--adv-green-light); }
.adv-box--tip .adv-box__icon, .adv-box--success .adv-box__icon { background: #d8efe2; color: var(--adv-green); }
.adv-box--tip .adv-box__icon::before { content: "💡"; }
.adv-box--success .adv-box__icon::before { content: "✓"; }
.adv-box--tip .adv-box__title, .adv-box--success .adv-box__title { color: var(--adv-green); }

.adv-box--pozor, .adv-box--chyba { border-left-color: var(--adv-red); background: var(--adv-red-light); }
.adv-box--pozor .adv-box__icon, .adv-box--chyba .adv-box__icon { background: #f6dada; color: var(--adv-red); }
.adv-box--pozor .adv-box__icon::before { content: "!"; }
.adv-box--chyba .adv-box__icon::before { content: "×"; }
.adv-box--pozor .adv-box__title, .adv-box--chyba .adv-box__title { color: var(--adv-red); }

.adv-box--poznamka, .adv-box--zapamataj { border-left-color: var(--adv-amber); background: var(--adv-amber-light); }
.adv-box--poznamka .adv-box__icon, .adv-box--zapamataj .adv-box__icon { background: #f6e4be; color: var(--adv-amber); }
.adv-box--poznamka .adv-box__icon::before { content: "i"; }
.adv-box--zapamataj .adv-box__icon::before { content: "★"; }
.adv-box--poznamka .adv-box__title, .adv-box--zapamataj .adv-box__title { color: var(--adv-amber); }

.adv-box--definicia, .adv-box--info, .adv-box--zdroj { border-left-color: var(--adv-slate); background: var(--adv-slate-light); }
.adv-box--definicia .adv-box__icon, .adv-box--info .adv-box__icon, .adv-box--zdroj .adv-box__icon { background: #dfe7ec; color: var(--adv-slate); }
.adv-box--definicia .adv-box__icon::before { content: "D"; }
.adv-box--info .adv-box__icon::before { content: "i"; }
.adv-box--zdroj .adv-box__icon::before { content: "↗"; }
.adv-box--definicia .adv-box__title, .adv-box--info .adv-box__title, .adv-box--zdroj .adv-box__title { color: var(--adv-slate); }

.adv-box--priklad { border-left-color: var(--adv-blue); background: #f7fbff; }
.adv-box--priklad .adv-box__icon { background: #dcecff; color: var(--adv-blue); }
.adv-box--priklad .adv-box__icon::before { content: "123"; font-size: 16px; }
.adv-box--priklad .adv-box__title { color: var(--adv-blue-dark); }

.adv-box--otazka, .adv-box--mytus { border-left-color: var(--adv-violet); background: var(--adv-violet-light); }
.adv-box--otazka .adv-box__icon, .adv-box--mytus .adv-box__icon { background: #e5d9f6; color: var(--adv-violet); }
.adv-box--otazka .adv-box__icon::before { content: "?"; }
.adv-box--mytus .adv-box__icon::before { content: "M"; }
.adv-box--otazka .adv-box__title, .adv-box--mytus .adv-box__title { color: var(--adv-violet); }

.adv-quote, .entry-content blockquote.adv-quote { position: relative; margin: 34px 0; padding: 30px 32px 24px 72px; border: 1px solid var(--adv-border); border-left: 6px solid var(--adv-blue); border-radius: 14px; background: linear-gradient(135deg, #f8fbff, #eef5fc); color: var(--adv-blue-dark); box-shadow: 0 8px 24px rgba(18, 63, 115, 0.06); }
.adv-quote__mark { position: absolute; top: 8px; left: 20px; font-family: Georgia, serif; font-size: 74px; line-height: 1; color: rgba(21, 89, 166, 0.18); }
.adv-quote__text { font-family: Georgia, serif; font-size: 21px; line-height: 1.65; font-style: italic; }
.adv-quote__text > :first-child { margin-top: 0; }
.adv-quote__text > :last-child { margin-bottom: 0; }
.adv-quote__footer { margin-top: 16px; text-align: right; font-family: inherit; font-size: 15px; font-style: normal; font-weight: 700; color: var(--adv-muted); }

.adv-button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 11px 20px; border: 2px solid transparent; border-radius: 9px; font-weight: 700; line-height: 1.2; text-decoration: none !important; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.adv-button:hover { transform: translateY(-1px); }
.adv-button--primary { background: var(--adv-blue); color: #fff !important; box-shadow: 0 5px 14px rgba(21, 89, 166, .2); }
.adv-button--primary:hover { background: var(--adv-blue-dark); }
.adv-button--secondary { background: var(--adv-blue-light); color: var(--adv-blue-dark) !important; }
.adv-button--secondary:hover { background: #dfeeff; }
.adv-button--outline { border-color: var(--adv-blue); background: transparent; color: var(--adv-blue) !important; }
.adv-button--outline:hover { background: var(--adv-blue-light); }

.adv-table-wrap { width: 100%; margin: 28px 0; overflow-x: auto; border: 1px solid var(--adv-border); border-radius: 12px; box-shadow: 0 7px 20px rgba(18, 63, 115, .06); -webkit-overflow-scrolling: touch; }
.adv-table-wrap table { width: 100%; min-width: 620px; margin: 0 !important; border-collapse: collapse; background: #fff; }
.adv-table-wrap th { padding: 14px 16px; background: var(--adv-blue-dark); color: #fff; text-align: left; font-weight: 700; }
.adv-table-wrap td { padding: 13px 16px; border-top: 1px solid var(--adv-border); color: var(--adv-text); vertical-align: top; }
.adv-table-wrap tbody tr:nth-child(even) { background: #f8fbfe; }
.adv-table-wrap tbody tr:hover { background: var(--adv-blue-light); }

@media (max-width: 767px) {
    .adv-box { grid-template-columns: 40px minmax(0, 1fr); gap: 14px; padding: 18px; border-radius: 12px; }
    .adv-box__icon { width: 40px; height: 40px; font-size: 20px; }
    .adv-box__title { font-size: 18px; }
    .adv-quote, .entry-content blockquote.adv-quote { padding: 58px 20px 22px; }
    .adv-quote__mark { top: 5px; left: 18px; }
    .adv-quote__text { font-size: 19px; }
}