/* ========================================
   MVP KROK — sdílené styly pro kroky 1, 2, 3
   Mobile first
   ======================================== */

.krok {
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
    min-height: 100vh;
    padding: 20px 0 60px;
}

.krok--1 { background: linear-gradient(180deg, #fef2f2 0%, #ffffff 40%); }
.krok--2 { background: linear-gradient(180deg, #fff7ed 0%, #ffffff 40%); }
.krok--3 { background: linear-gradient(180deg, #f5f3ff 0%, #ffffff 40%); }

.krok__container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 16px;
}

/* HERO */
.krok__hero {
    text-align: center;
    padding: 24px 0 32px;
    margin-bottom: 24px;
    border-bottom: 1px solid #e5e7eb;
}

.krok__eyebrow {
    display: inline-block;
    padding: 4px 14px;
    color: #ffffff;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 20px;
    margin-bottom: 12px;
}

.krok__eyebrow--mvp  { background: linear-gradient(135deg, #ef4444, #b91c1c); }
.krok__eyebrow--diff { background: linear-gradient(135deg, #f97316, #c2410c); }
.krok__eyebrow--magic { background: linear-gradient(135deg, #8b5cf6, #6d28d9); }

.krok__title {
    font-size: 24px;
    font-weight: 800;
    color: #0f172a;
    margin: 0 0 10px;
    line-height: 1.2;
}

.krok__lead {
    font-size: 14px;
    color: #475569;
    line-height: 1.55;
    max-width: 720px;
    margin: 0 auto;
}

.krok__legend {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-top: 16px;
}

.krok__tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.3px;
}

.krok__tag--mvp    { background: #dcfce7; color: #15803d; border: 1px solid #86efac; }
.krok__tag--future { background: #e0e7ff; color: #3730a3; border: 1px solid #a5b4fc; }
.krok__tag--must   { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }

/* GRID KARET */
.krok__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.krok__card {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 14px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.05);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.krok__card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.1);
}

.krok__card-head {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 14px 16px 10px;
    border-bottom: 1px solid #f3f4f6;
}

.krok__num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: linear-gradient(135deg, #ef4444, #b91c1c);
    color: #ffffff;
    font-weight: 800;
    font-size: 14px;
    flex-shrink: 0;
    font-variant-numeric: tabular-nums;
}

.krok__card-titles { flex: 1; min-width: 0; }

.krok__card-title {
    font-size: 16px;
    font-weight: 700;
    color: #0f172a;
    margin: 0 0 3px;
    line-height: 1.3;
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.krok__route {
    font-family: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
    font-size: 11px;
    color: #64748b;
    background: #f8fafc;
    padding: 2px 6px;
    border-radius: 4px;
    display: inline-block;
    line-height: 1.4;
    word-break: break-word;
}

.krok__route strong { color: #0f172a; }

.krok__badge {
    display: inline-block;
    padding: 2px 7px;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.3px;
    border-radius: 4px;
    text-transform: uppercase;
}

.krok__badge--must {
    background: linear-gradient(135deg, #dc2626, #991b1b);
    color: #ffffff;
}

/* NÁHLED — iframe s scale trikem */
.krok__preview {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    background: #f8fafc;
    overflow: hidden;
    border-bottom: 1px solid #e5e7eb;
}

.krok__iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 300%;
    height: 300%;
    border: 0;
    transform: scale(0.333);
    transform-origin: top left;
    pointer-events: none;
    background: #ffffff;
}

.krok__preview-link {
    position: absolute;
    inset: 0;
    z-index: 2;
    cursor: pointer;
    background: transparent;
    transition: background 0.15s ease;
}

.krok__preview-link:hover {
    background: rgba(59, 130, 246, 0.08);
}

.krok__card-body {
    padding: 14px 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

.krok__block {
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 10px 12px;
    background: #fafbfc;
}

.krok__block--mvp {
    background: #f0fdf4;
    border-color: #86efac;
    border-left: 4px solid #10b981;
}

.krok__block--future {
    background: #eef2ff;
    border-color: #a5b4fc;
    border-left: 4px solid #6366f1;
}

.krok__block-title {
    font-size: 10px;
    font-weight: 700;
    color: #15803d;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0 0 6px;
}

.krok__block--future .krok__block-title { color: #3730a3; }

.krok__block ul {
    list-style: disc;
    padding-left: 18px;
    margin: 0;
    font-size: 12px;
    line-height: 1.55;
    color: #0f172a;
}

.krok__block ul li { margin-bottom: 3px; }
.krok__block ul a { color: #3730a3; text-decoration: underline; }
.krok__block ul a:hover { color: #1e40af; }

.krok__card-cta {
    display: block;
    padding: 10px 16px;
    background: #f8fafc;
    border-top: 1px solid #e5e7eb;
    font-size: 13px;
    font-weight: 600;
    color: #0f172a;
    text-align: center;
    text-decoration: none;
    transition: background 0.15s ease, color 0.15s ease;
}

.krok__card-cta:hover {
    background: #fef2f2;
    color: #b91c1c;
}

/* ROZHODNUTÍ (decision section) */
.krok__section--decision {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    border-color: #fca5a5;
    border-width: 2px;
}

.krok__section--decision .krok__section-title {
    color: #7f1d1d;
}

.krok__text {
    font-size: 14px;
    line-height: 1.55;
    color: #334155;
    margin: 0 0 12px;
}

.krok__decision-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    margin: 14px 0;
}

.krok__decision-card {
    background: #ffffff;
    border: 1.5px solid #e5e7eb;
    border-radius: 10px;
    padding: 14px 16px;
}

.krok__decision-card--verify {
    border-left: 4px solid #dc2626;
}

.krok__decision-card--comm {
    border-left: 4px solid #6366f1;
}

.krok__decision-title {
    font-size: 15px;
    font-weight: 700;
    color: #0f172a;
    margin: 0 0 8px;
}

.krok__decision-card ul {
    list-style: disc;
    padding-left: 20px;
    margin: 0 0 8px;
    font-size: 13px;
    line-height: 1.55;
    color: #0f172a;
}

.krok__decision-card ul li { margin-bottom: 3px; }

.krok__decision-note {
    margin: 8px 0 0;
    padding: 8px 10px;
    background: #fef2f2;
    border-radius: 6px;
    font-size: 12px;
    color: #7f1d1d;
    line-height: 1.4;
}

.krok__decision-card--comm .krok__decision-note {
    background: #eef2ff;
    color: #3730a3;
}

/* PLACEHOLDER pro karty bez mockupu */
.krok__preview--placeholder {
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.krok__placeholder {
    text-align: center;
    color: #64748b;
    padding: 20px;
}

.krok__placeholder svg {
    width: 40px;
    height: 40px;
    color: #94a3b8;
    margin-bottom: 8px;
}

.krok__placeholder p {
    font-size: 12px;
    line-height: 1.4;
    margin: 0;
    font-weight: 500;
}

.krok__card-cta--disabled {
    display: block;
    padding: 10px 16px;
    background: #f1f5f9;
    border-top: 1px solid #e5e7eb;
    font-size: 12px;
    color: #94a3b8;
    text-align: center;
    font-style: italic;
    cursor: default;
}

/* SHRNUTÍ */
.krok__section {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 14px;
    padding: 18px;
    margin-top: 20px;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}

.krok__section--summary {
    background: linear-gradient(135deg, #eff6ff 0%, #e0e7ff 100%);
    border-color: #c7d2fe;
}

.krok__section-title {
    font-size: 18px;
    font-weight: 700;
    color: #0f172a;
    margin: 0 0 12px;
}

.krok__summary-sub {
    font-size: 13px;
    font-weight: 700;
    color: #3730a3;
    margin: 14px 0 6px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.krok__summary-sub:first-of-type { margin-top: 0; }

.krok__summary-list {
    list-style: disc;
    padding-left: 22px;
    margin: 0;
    font-size: 13px;
    line-height: 1.6;
    color: #0f172a;
}

.krok__summary-list li { margin-bottom: 3px; }
.krok__summary-list code {
    font-family: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
    font-size: 12px;
    background: #ffffff;
    border: 1px solid #c7d2fe;
    padding: 1px 6px;
    border-radius: 4px;
    color: #4338ca;
}

.krok__summary-list--no {
    list-style: '✕  ' inside;
    padding-left: 0;
    color: #7f1d1d;
}

/* SEZNAMOVÉ ZOBRAZENÍ PRO KROK 2 a 3 */
.krok__phase-intro {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 14px 16px;
    margin-bottom: 18px;
}

.krok__phase-intro p { margin: 0 0 8px; font-size: 14px; line-height: 1.55; color: #334155; }
.krok__phase-intro p:last-child { margin-bottom: 0; }

.krok__feature-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.krok__feature {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.krok__feature-head {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.krok__feature-title {
    font-size: 15px;
    font-weight: 700;
    color: #0f172a;
    margin: 0;
}

.krok__feature-desc {
    font-size: 13px;
    color: #475569;
    line-height: 1.5;
    margin: 0;
}

.krok__feature-mockup {
    font-size: 12px;
    color: #6366f1;
    font-weight: 600;
    text-decoration: none;
    margin-top: 2px;
    display: inline-block;
}
.krok__feature-mockup:hover { text-decoration: underline; }

.krok__diff-tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.krok__diff-tag--easy   { background: #dcfce7; color: #15803d; }
.krok__diff-tag--medium { background: #fef3c7; color: #92400e; }
.krok__diff-tag--hard   { background: #fecaca; color: #991b1b; }

/* POLOPATICKÝ AKČNÍ PLÁN (krok 1) */
.krok__section--plan {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    border-color: #93c5fd;
    border-width: 2px;
}

.krok__section--plan .krok__section-title { color: #1e3a8a; }

.krok__plan-list {
    list-style: none;
    padding: 0;
    margin: 16px 0 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.krok__plan-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    background: #ffffff;
    border: 1.5px solid #e5e7eb;
    border-radius: 10px;
    padding: 14px 16px;
}

.krok__plan-item--help {
    border-color: #fbbf24;
    border-left: 4px solid #f59e0b;
    background: linear-gradient(135deg, #ffffff 0%, #fffbeb 100%);
}

.krok__plan-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: #ffffff;
    font-weight: 800;
    font-size: 14px;
    flex-shrink: 0;
    font-variant-numeric: tabular-nums;
}

.krok__plan-item--help .krok__plan-num {
    background: linear-gradient(135deg, #f59e0b, #b45309);
}

.krok__plan-body {
    flex: 1;
    min-width: 0;
}

.krok__plan-title {
    font-size: 15px;
    font-weight: 700;
    color: #0f172a;
    margin: 0 0 6px;
    line-height: 1.3;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.krok__plan-desc {
    font-size: 13px;
    color: #334155;
    line-height: 1.55;
    margin: 0 0 8px;
}

.krok__plan-desc a {
    color: #1d4ed8;
    text-decoration: underline;
}

.krok__plan-sub {
    list-style: disc;
    padding-left: 18px;
    margin: 0;
    font-size: 12.5px;
    line-height: 1.55;
    color: #0f172a;
}

.krok__plan-sub li { margin-bottom: 3px; }

.krok__plan-sub--branches {
    list-style: none;
    padding-left: 0;
}

.krok__plan-sub--branches li {
    padding: 6px 10px;
    background: #fef3c7;
    border-radius: 6px;
    margin-bottom: 5px;
    font-size: 12.5px;
}

.krok__plan-tag {
    display: inline-block;
    padding: 2px 8px;
    background: linear-gradient(135deg, #f59e0b, #b45309);
    color: #ffffff;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 0.5px;
    border-radius: 4px;
    text-transform: uppercase;
}

.krok__plan-goal {
    margin-top: 18px;
    padding: 16px 18px;
    background: #ffffff;
    border: 2px solid #86efac;
    border-radius: 10px;
}

.krok__plan-goal-title {
    font-size: 15px;
    font-weight: 700;
    color: #15803d;
    margin: 0 0 10px;
}

.krok__plan-goal-list {
    list-style: '✓  ' inside;
    padding-left: 0;
    margin: 0;
    font-size: 13px;
    line-height: 1.65;
    color: #0f172a;
}

.krok__plan-goal-list li { margin-bottom: 3px; }

/* Rozbalovací vysvětlení pojmu v plánu (details/summary) */
.krok__plan-info {
    display: inline;
}

.krok__plan-info summary {
    cursor: pointer;
    list-style: none;
    display: inline;
}

.krok__plan-info summary::-webkit-details-marker { display: none; }
.krok__plan-info summary::marker { content: ''; }

.krok__plan-info-hint {
    display: inline-block;
    margin-left: 6px;
    padding: 1px 9px 2px;
    background: #dbeafe;
    color: #1e40af;
    font-size: 10.5px;
    font-weight: 600;
    border-radius: 10px;
    vertical-align: middle;
    transition: background 0.15s ease, color 0.15s ease;
    white-space: nowrap;
}

.krok__plan-info summary:hover .krok__plan-info-hint {
    background: #bfdbfe;
}

.krok__plan-info[open] .krok__plan-info-hint {
    background: #1e40af;
    color: #ffffff;
}

.krok__plan-info-hint::after { content: ' ▾'; font-size: 9px; }
.krok__plan-info[open] .krok__plan-info-hint::after { content: ' ▴'; }

.krok__plan-info-body {
    margin-top: 10px;
    padding: 12px 14px;
    background: #f0f9ff;
    border-left: 3px solid #3b82f6;
    border-radius: 6px;
    font-size: 12.5px;
    line-height: 1.6;
    color: #0f172a;
}

.krok__plan-info-body p { margin: 0 0 8px; }
.krok__plan-info-body p:last-child { margin-bottom: 0; }

.krok__plan-info-body ul {
    list-style: disc;
    padding-left: 18px;
    margin: 8px 0;
}

.krok__plan-info-body ul li { margin-bottom: 5px; }

.krok__plan-info-body code {
    font-family: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
    font-size: 11px;
    background: #ffffff;
    border: 1px solid #bfdbfe;
    padding: 1px 5px;
    border-radius: 4px;
    color: #1e40af;
}

.krok__plan-info-body a {
    color: #1d4ed8;
    text-decoration: underline;
}

/* === TABLET + DESKTOP === */
@media (min-width: 768px) {
    .krok {
        padding: 40px 0 80px;
    }
    .krok__container {
        padding: 0 24px;
    }
    .krok__hero {
        padding: 40px 0 48px;
    }
    .krok__title {
        font-size: 34px;
    }
    .krok__lead {
        font-size: 16px;
    }
    .krok__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
    }
    .krok__section {
        padding: 24px 28px;
    }
    .krok__section-title {
        font-size: 22px;
    }
    .krok__feature-list {
        grid-template-columns: repeat(2, 1fr);
    }
    .krok__plan-num {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    .krok__plan-title {
        font-size: 17px;
    }
    .krok__plan-desc {
        font-size: 14px;
    }
    .krok__plan-sub,
    .krok__plan-sub--branches li {
        font-size: 13.5px;
    }
    .krok__plan-goal-list {
        font-size: 14px;
    }
}

@media (min-width: 768px) {
    .krok__decision-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1200px) {
    .krok__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}