/* ============================================================
 * EKP Calculators — Modern UI Design System (2026 refresh, EN/LTR)
 * All styles are scoped under .ekp-calc-archive and .ekp-calc-shortcode
 * ============================================================ */

.ekp-calc-archive,
.ekp-calc-shortcode {
    --ekp-primary: #4F46E5;
    --ekp-primary-light: #6366F1;
    --ekp-primary-dark: #3730A3;
    --ekp-violet: #7C3AED;
    --ekp-accent: #06B6D4;
    --ekp-accent-light: #22D3EE;
    --ekp-ink: #0F172A;
    --ekp-body: #475569;
    --ekp-muted: #94A3B8;
    --ekp-bg: #F6F7FB;
    --ekp-bg-soft: #EEF1FA;
    --ekp-white: #FFFFFF;
    --ekp-border: #E4E9F2;
    --ekp-green: #10B981;
    --ekp-orange: #F59E0B;
    --ekp-red: #EF4444;

    --ekp-radius-lg: 28px;
    --ekp-radius: 20px;
    --ekp-radius-sm: 14px;
    --ekp-radius-pill: 999px;

    --ekp-shadow-xs: 0 1px 2px rgba(15,23,42,.05);
    --ekp-shadow-sm: 0 2px 8px rgba(15,23,42,.06);
    --ekp-shadow-md: 0 10px 26px -6px rgba(15,23,42,.12);
    --ekp-shadow-lg: 0 26px 52px -16px rgba(79,70,229,.30);
    --ekp-shadow-glow: 0 14px 34px -10px rgba(79,70,229,.35);

    --ekp-gradient-brand: linear-gradient(135deg, #4F46E5 0%, #7C3AED 55%, #06B6D4 100%);
    --ekp-gradient-soft: linear-gradient(135deg, #EEF2FF 0%, #F5F3FF 45%, #ECFEFF 100%);
    --ekp-ease: cubic-bezier(.16,1,.3,1);

    font-family: 'Cairo', -apple-system, BlinkMacSystemFont, sans-serif;
    direction: ltr;
    color: var(--ekp-ink);
    box-sizing: border-box;
}
.ekp-calc-archive *, .ekp-calc-shortcode * { box-sizing: border-box; }

.ekp-calc-archive ::selection, .ekp-calc-shortcode ::selection { background: var(--ekp-primary); color: #fff; }

.ekp-calc-archive a:focus-visible,
.ekp-calc-archive button:focus-visible,
.ekp-calc-archive input:focus-visible,
.ekp-calc-shortcode a:focus-visible,
.ekp-calc-shortcode button:focus-visible,
.ekp-calc-shortcode input:focus-visible {
    outline: 2.5px solid var(--ekp-primary);
    outline-offset: 3px;
    border-radius: 6px;
}

.ekp-calc-archive { width: 100%; max-width: 100%; margin: 0 auto; padding: 48px 40px 90px; background: var(--ekp-bg); }
@media (max-width: 900px) { .ekp-calc-archive { padding: 36px 24px 72px; } }
@media (max-width: 600px) { .ekp-calc-archive { padding: 28px 14px 64px; } }

@keyframes ekpFadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes ekpAuroraFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50%      { transform: translate(-24px, 18px) scale(1.08); }
}

/* ---------- Hero (card-style, e.g. shortcode landing) ---------- */
.ekp-archive-hero {
    position: relative;
    background: var(--ekp-gradient-soft);
    border-radius: var(--ekp-radius-lg);
    padding: 60px 44px;
    margin-bottom: 26px;
    overflow: hidden;
    isolation: isolate;
}
.ekp-archive-hero::before {
    content: "";
    position: absolute;
    inset-inline-end: -110px;
    top: -110px;
    width: 340px;
    height: 340px;
    background: radial-gradient(circle, rgba(79,70,229,.22), transparent 70%);
    border-radius: 50%;
    filter: blur(2px);
    z-index: -1;
}
.ekp-archive-hero::after {
    content: "";
    position: absolute;
    inset-inline-start: -70px;
    bottom: -90px;
    width: 240px;
    height: 240px;
    background: radial-gradient(circle, rgba(6,182,212,.20), transparent 70%);
    border-radius: 50%;
    filter: blur(2px);
    z-index: -1;
}
@media (prefers-reduced-motion: no-preference) {
    .ekp-archive-hero::before { animation: ekpAuroraFloat 16s ease-in-out infinite; }
    .ekp-archive-hero::after  { animation: ekpAuroraFloat 20s ease-in-out infinite reverse; }
}
.ekp-hero-inner { max-width: 720px; }

.ekp-hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--ekp-white);
    color: var(--ekp-primary);
    font-weight: 700;
    font-size: 13px;
    padding: 8px 18px;
    border-radius: var(--ekp-radius-pill);
    margin-bottom: 18px;
    box-shadow: var(--ekp-shadow-sm);
    border: 1px solid var(--ekp-border);
}
.ekp-hero-title {
    font-size: clamp(28px, 4vw, 46px);
    font-weight: 800;
    margin: 0 0 12px;
    line-height: 1.25;
    color: var(--ekp-ink);
    letter-spacing: -.01em;
}
@supports ((background-clip: text) or (-webkit-background-clip: text)) {
    .ekp-hero-title {
        background: var(--ekp-gradient-brand);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
        color: transparent;
    }
}
.ekp-hero-desc { font-size: 16px; color: var(--ekp-body); margin: 0; font-weight: 500; line-height: 1.75; }

/* ---------- Filters bar ---------- */
.ekp-filters-bar {
    background: rgba(255,255,255,.78);
    backdrop-filter: saturate(180%) blur(18px);
    -webkit-backdrop-filter: saturate(180%) blur(18px);
    border: 1px solid rgba(226,232,240,.8);
    border-radius: var(--ekp-radius);
    box-shadow: var(--ekp-shadow-md);
    padding: 22px 24px;
    margin-bottom: 26px;
    position: sticky;
    top: 12px;
    z-index: 20;
}
.ekp-search-box { margin-bottom: 16px; position: relative; }
.ekp-search-box input {
    width: 100%;
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    padding: 14px 20px;
    border: 1.5px solid var(--ekp-border);
    border-radius: var(--ekp-radius-sm);
    background: var(--ekp-bg);
    outline: none;
    color: var(--ekp-ink);
    transition: border-color .2s var(--ekp-ease), background .2s var(--ekp-ease), box-shadow .2s var(--ekp-ease);
}
.ekp-search-box input::placeholder { color: var(--ekp-muted); font-weight: 500; }
.ekp-search-box input:focus {
    border-color: var(--ekp-primary);
    background: var(--ekp-white);
    box-shadow: 0 0 0 4px rgba(79,70,229,.12);
}
.ekp-chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.ekp-chip-row + .ekp-chip-row { margin-top: 10px; }
@media (max-width: 640px) {
    .ekp-chip-row {
        flex-wrap: nowrap;
        overflow-x: auto;
        scrollbar-width: none;
        -webkit-overflow-scrolling: touch;
        margin-inline: -4px;
        padding: 2px 4px 4px;
    }
    .ekp-chip-row::-webkit-scrollbar { display: none; }
    .ekp-chip-row .ekp-chip { flex: 0 0 auto; }
}
.ekp-chip {
    font-family: inherit;
    font-weight: 600;
    font-size: 13.5px;
    background: var(--ekp-bg);
    color: var(--ekp-body);
    border: 1.5px solid transparent;
    border-radius: var(--ekp-radius-pill);
    padding: 9px 18px;
    cursor: pointer;
    transition: background .18s var(--ekp-ease), color .18s var(--ekp-ease), box-shadow .18s var(--ekp-ease), transform .18s var(--ekp-ease);
}
.ekp-chip:hover { background: #EEF2FF; color: var(--ekp-primary); transform: translateY(-1px); }
.ekp-chip.is-active {
    background: var(--ekp-gradient-brand);
    color: var(--ekp-white);
    box-shadow: 0 6px 16px -2px rgba(79,70,229,.4);
}
.ekp-chip--sm { font-size: 12.5px; padding: 7px 15px; }
.ekp-chip--basic.is-active { background: var(--ekp-green); box-shadow: 0 6px 16px -2px rgba(16,185,129,.4); }
.ekp-chip--intermediate.is-active { background: var(--ekp-orange); box-shadow: 0 6px 16px -2px rgba(245,158,11,.4); }
.ekp-chip--advanced.is-active { background: var(--ekp-red); box-shadow: 0 6px 16px -2px rgba(239,68,68,.4); }

/* ---------- Results meta ---------- */
.ekp-results-meta { font-weight: 600; color: var(--ekp-muted); margin-bottom: 18px; font-size: 14px; }

/* ---------- Grid ---------- */
.ekp-calc-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    transition: opacity .25s var(--ekp-ease), filter .25s var(--ekp-ease);
}
.ekp-calc-grid--cols-2 { grid-template-columns: repeat(2, 1fr); }
.ekp-calc-grid--cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (min-width: 1680px) { .ekp-calc-grid { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 900px) { .ekp-calc-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .ekp-calc-grid { grid-template-columns: 1fr; gap: 16px; } }

/* ---------- Card ---------- */
.ekp-calc-card {
    position: relative;
    background: var(--ekp-white);
    border: 1px solid var(--ekp-border);
    border-radius: var(--ekp-radius);
    box-shadow: var(--ekp-shadow-sm);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform .3s var(--ekp-ease), box-shadow .3s var(--ekp-ease), border-color .3s var(--ekp-ease);
}
@media (prefers-reduced-motion: no-preference) {
    .ekp-calc-card { animation: ekpFadeUp .5s var(--ekp-ease) both; }
    .ekp-calc-grid > .ekp-calc-card:nth-child(1) { animation-delay: .02s; }
    .ekp-calc-grid > .ekp-calc-card:nth-child(2) { animation-delay: .06s; }
    .ekp-calc-grid > .ekp-calc-card:nth-child(3) { animation-delay: .10s; }
    .ekp-calc-grid > .ekp-calc-card:nth-child(4) { animation-delay: .14s; }
    .ekp-calc-grid > .ekp-calc-card:nth-child(5) { animation-delay: .18s; }
    .ekp-calc-grid > .ekp-calc-card:nth-child(6) { animation-delay: .22s; }
}
.ekp-calc-card::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1.5px;
    background: var(--ekp-gradient-brand);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity .3s var(--ekp-ease);
    pointer-events: none;
    z-index: 3;
}
.ekp-calc-card:hover {
    transform: translateY(-7px);
    box-shadow: var(--ekp-shadow-lg);
    border-color: transparent;
}
.ekp-calc-card:hover::after { opacity: 1; }
.ekp-calc-card.is-featured { border: 1.5px solid var(--ekp-primary); }
.ekp-calc-card.is-featured::after { opacity: .55; }

/* Slim gradient accent bar instead of a hard resistor band */
.ekp-resistor-band { display: block; height: 6px; width: 100%; position: relative; z-index: 1; }
.ekp-band--basic { background: linear-gradient(90deg, var(--ekp-green), #34D399); box-shadow: 0 3px 14px -3px rgba(16,185,129,.65); }
.ekp-band--intermediate { background: linear-gradient(90deg, var(--ekp-orange), #FBBF24); box-shadow: 0 3px 14px -3px rgba(245,158,11,.65); }
.ekp-band--advanced { background: linear-gradient(90deg, var(--ekp-red), #F87171); box-shadow: 0 3px 14px -3px rgba(239,68,68,.65); }
.ekp-band--none { background: var(--ekp-gradient-brand); opacity: .55; }

.ekp-ribbon {
    position: absolute;
    top: 14px;
    inset-inline-start: 14px;
    background: var(--ekp-primary);
    color: var(--ekp-white);
    font-weight: 700;
    font-size: 11.5px;
    padding: 6px 14px;
    border-radius: var(--ekp-radius-pill);
    z-index: 2;
    box-shadow: 0 6px 14px -2px rgba(79,70,229,.45);
}
.ekp-ribbon--alt { background: var(--ekp-ink); }

.ekp-card-media {
    background: var(--ekp-bg);
    aspect-ratio: 16/10;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.ekp-card-media img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .4s var(--ekp-ease); }
.ekp-calc-card:hover .ekp-card-media img { transform: scale(1.07); }
.ekp-card-media--placeholder {
    font-size: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    text-decoration: none;
    background: var(--ekp-gradient-soft);
    transition: transform .4s var(--ekp-ease);
}
.ekp-calc-card:hover .ekp-card-media--placeholder { transform: scale(1.07); }

.ekp-card-body { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 9px; flex: 1; }

.ekp-diff-badge {
    align-self: flex-start;
    font-size: 11.5px;
    font-weight: 700;
    color: var(--ekp-white);
    padding: 4px 12px;
    border-radius: var(--ekp-radius-pill);
}
.ekp-diff-badge--basic { background: var(--ekp-green); }
.ekp-diff-badge--intermediate { background: var(--ekp-orange); }
.ekp-diff-badge--advanced { background: var(--ekp-red); }

.ekp-card-title { font-size: 17.5px; font-weight: 700; margin: 0; line-height: 1.45; }
.ekp-card-title a { color: var(--ekp-ink); text-decoration: none; transition: color .2s var(--ekp-ease); }
.ekp-card-title a:hover { color: var(--ekp-primary); }

.ekp-card-excerpt { font-size: 13.5px; color: var(--ekp-body); font-weight: 500; margin: 0; flex: 1; line-height: 1.7; }

.ekp-card-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    justify-content: center;
    margin-top: 10px;
    background: var(--ekp-bg);
    color: var(--ekp-primary);
    font-weight: 700;
    font-size: 14px;
    padding: 12px 18px;
    border-radius: var(--ekp-radius-sm);
    text-decoration: none;
    border: none;
    transition: background .25s var(--ekp-ease), color .25s var(--ekp-ease), box-shadow .25s var(--ekp-ease);
}
.ekp-card-btn span { display: inline-block; transition: transform .25s var(--ekp-ease); }
.ekp-card-btn:hover {
    background: var(--ekp-gradient-brand);
    color: var(--ekp-white);
    box-shadow: 0 8px 20px -4px rgba(79,70,229,.45);
}
.ekp-card-btn:hover span { transform: translateX(4px); }

/* ---------- No results / loading ---------- */
.ekp-no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 68px 20px;
    font-weight: 600;
    font-size: 15px;
    color: var(--ekp-muted);
    background: var(--ekp-white);
    border: 1.5px dashed var(--ekp-border);
    border-radius: var(--ekp-radius);
}
.ekp-no-results::before {
    content: "🔍";
    display: block;
    font-size: 34px;
    margin-bottom: 12px;
}
.ekp-calc-grid.is-loading { opacity: .45; filter: blur(1px) saturate(70%); pointer-events: none; transform: scale(.99); }

/* ---------- Pagination / Load more ---------- */
.ekp-pagination-wrap { text-align: center; margin-top: 44px; }
.ekp-load-more-btn {
    font-family: inherit;
    font-weight: 700;
    font-size: 14.5px;
    background: var(--ekp-white);
    color: var(--ekp-primary);
    border: 1.5px solid var(--ekp-primary);
    border-radius: var(--ekp-radius-pill);
    padding: 14px 36px;
    cursor: pointer;
    box-shadow: var(--ekp-shadow-xs);
    transition: background .25s var(--ekp-ease), color .25s var(--ekp-ease), box-shadow .25s var(--ekp-ease), transform .2s var(--ekp-ease);
}
.ekp-load-more-btn:hover {
    background: var(--ekp-gradient-brand);
    color: var(--ekp-white);
    box-shadow: 0 10px 24px -4px rgba(79,70,229,.4);
    transform: translateY(-2px);
}
.ekp-load-more-btn[disabled] { opacity: .6; cursor: default; transform: none; box-shadow: none; }

/* ---------- Shortcode embed variant ---------- */
.ekp-calc-shortcode { margin: 24px 0; }

/* ============================================================
 * Directory Style (Sitemap-style category boxes)
 * ============================================================ */

.ekp-dir-hero { text-align: center; max-width: 640px; margin: 0 auto 44px; }
.ekp-dir-hero .ekp-hero-kicker {
    display: inline-flex; align-items: center; gap: 6px;
    background: var(--ekp-white); color: var(--ekp-primary);
    font-weight: 700; font-size: 13px; padding: 8px 18px;
    border-radius: var(--ekp-radius-pill); margin-bottom: 18px;
    box-shadow: var(--ekp-shadow-sm); border: 1px solid var(--ekp-border);
}
.ekp-dir-hero .ekp-hero-title { font-size: clamp(26px, 4vw, 40px); margin: 0 0 10px; }
.ekp-dir-hero .ekp-hero-desc { font-size: 15.5px; color: var(--ekp-body); font-weight: 500; margin: 0 0 26px; line-height: 1.75; }

.ekp-dir-search-box { max-width: 460px; margin: 0 auto; }
.ekp-dir-search-box input {
    width: 100%;
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    padding: 14px 22px;
    border: 1.5px solid var(--ekp-border);
    border-radius: var(--ekp-radius-pill);
    background: var(--ekp-white);
    outline: none;
    color: var(--ekp-ink);
    box-shadow: var(--ekp-shadow-sm);
    transition: border-color .2s var(--ekp-ease), box-shadow .2s var(--ekp-ease);
}
.ekp-dir-search-box input::placeholder { color: var(--ekp-muted); font-weight: 500; }
.ekp-dir-search-box input:focus { border-color: var(--ekp-primary); box-shadow: 0 0 0 4px rgba(79,70,229,.12); }

/* Masonry column layout for category boxes */
.ekp-directory {
    column-count: 5;
    column-gap: 22px;
}
.ekp-directory--single { column-count: 1; max-width: 560px; margin: 0 auto; }
@media (min-width: 1680px) { .ekp-directory { column-count: 6; } }
@media (max-width: 1200px) { .ekp-directory { column-count: 4; } }
@media (max-width: 980px)  { .ekp-directory { column-count: 3; } }
@media (max-width: 680px)  { .ekp-directory { column-count: 2; } }
@media (max-width: 460px)  { .ekp-directory { column-count: 1; } }

.ekp-dir-box {
    break-inside: avoid;
    display: inline-block;
    width: 100%;
    margin-bottom: 22px;
    background: var(--ekp-white);
    border: 1px solid var(--ekp-border);
    border-radius: 18px;
    box-shadow: var(--ekp-shadow-sm);
    overflow: hidden;
    transition: box-shadow .25s var(--ekp-ease), border-color .25s var(--ekp-ease), transform .25s var(--ekp-ease);
}
@media (prefers-reduced-motion: no-preference) {
    .ekp-dir-box { animation: ekpFadeUp .5s var(--ekp-ease) both; }
}
.ekp-dir-box::before {
    content: "";
    display: block;
    height: 4px;
    width: 100%;
    background: var(--ekp-gradient-brand);
    opacity: .8;
}
.ekp-dir-box:hover {
    box-shadow: var(--ekp-shadow-md);
    border-color: transparent;
    transform: translateY(-3px);
}

.ekp-dir-box-header {
    padding: 16px 18px 13px;
    border-bottom: 1px solid var(--ekp-bg-soft);
    font-weight: 700;
    font-size: 15px;
    color: var(--ekp-ink);
}
.ekp-dir-box-header a { color: inherit; text-decoration: none; }
.ekp-dir-box-header a:hover { color: var(--ekp-primary); }

.ekp-dir-box-list { list-style: none; margin: 0; padding: 6px 0; }
.ekp-dir-item { border-bottom: 1px solid var(--ekp-bg-soft); }
.ekp-dir-item:last-child { border-bottom: none; }
.ekp-dir-item--empty { padding: 14px 18px; color: var(--ekp-muted); font-weight: 500; font-size: 13.5px; }

.ekp-dir-item a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 18px;
    color: var(--ekp-body);
    text-decoration: none;
    font-size: 13.8px;
    font-weight: 600;
    transition: background .18s var(--ekp-ease), color .18s var(--ekp-ease), padding-inline-start .18s var(--ekp-ease);
}
.ekp-dir-item a:hover {
    background: var(--ekp-bg-soft);
    color: var(--ekp-primary-dark);
    padding-inline-start: 22px;
}
.ekp-dir-item-text { flex: 1; }
.ekp-dir-item-arrow {
    color: var(--ekp-muted);
    font-size: 15px;
    font-weight: 700;
    transition: transform .18s var(--ekp-ease), color .18s var(--ekp-ease);
}
.ekp-dir-item a:hover .ekp-dir-item-arrow { color: var(--ekp-primary); transform: translateX(3px); }

.ekp-dir-box-more {
    display: block;
    text-align: center;
    padding: 12px;
    font-size: 13px;
    font-weight: 700;
    color: var(--ekp-primary);
    background: var(--ekp-bg-soft);
    text-decoration: none;
    border-top: 1px solid var(--ekp-border);
    transition: background .2s var(--ekp-ease);
}
.ekp-dir-box-more:hover { background: #E2E8FF; }

.ekp-dir-box.is-hidden { display: none; }
.ekp-dir-item.is-hidden { display: none; }