/* Experience Calculator KSA. All rules are scoped under .eck to avoid theme clashes. */

.eck {
    --eck-paper: #F5F2EC;
    --eck-surface: #FFFFFF;
    --eck-ink: #17202A;
    --eck-muted: #5E6772;
    --eck-line: #DDD6CA;
    --eck-accent: #0E5E5A;
    --eck-accent-hover: #0A4a47;
    --eck-accent-soft: #E3EFEE;
    --eck-danger: #A33A2B;
    --eck-radius: 10px;
    --eck-serif: "Fraunces", Georgia, "Times New Roman", serif;
    --eck-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

    color: var(--eck-ink);
    font-family: var(--eck-sans);
    font-size: 16px;
    line-height: 1.6;
    box-sizing: border-box;
    max-width: 1080px;
    margin: 0 auto;
    padding: 2rem 1.25rem;
}

.eck *,
.eck *::before,
.eck *::after { box-sizing: border-box; }

.eck[hidden], .eck [hidden] { display: none !important; }

/* Dark mode: follows the OS setting or a data-theme="dark" attribute on <html>/<body> */
@media (prefers-color-scheme: dark) {
    .eck:not([data-theme="light"]) {
        --eck-paper: #101417; --eck-surface: #171D21; --eck-ink: #EDE9E1; --eck-muted: #A3ADB6;
        --eck-line: #2C353B; --eck-accent: #5FB8B2; --eck-accent-hover: #7CC9C3;
        --eck-accent-soft: #16302E; --eck-danger: #E58A7A;
    }
}

.eck h2.eck-h1,
.eck h3,
.eck h4 {
    font-family: var(--eck-serif);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.01em;
    color: var(--eck-ink);
}
.eck h2.eck-h1 { font-size: clamp(2rem, 4vw + 1rem, 3rem); margin: 0 0 .5em; }
.eck h3 { font-size: 1.5rem; margin: 2em 0 .5em; }
.eck h4 { font-size: 1.15rem; margin: 1.5em 0 .4em; }
.eck p { margin: 0 0 1em; }
.eck a { color: var(--eck-accent); }
.eck :focus-visible { outline: 2px solid var(--eck-accent); outline-offset: 2px; border-radius: 4px; }

.eck-tool {
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: 1.5rem;
    align-items: start;
}
@media (max-width: 860px) { .eck-tool { grid-template-columns: 1fr; } }

.eck-card {
    background: var(--eck-surface);
    border: 1px solid var(--eck-line);
    border-radius: var(--eck-radius);
    padding: 1.6rem;
}
.eck-card-title {
    font-size: 1.35rem !important;
    margin: 0 0 1.2rem !important;
}

/* Form */
.eck-field { display: flex; flex-direction: column; gap: .4rem; margin-bottom: 1.1rem; }
.eck-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 520px) { .eck-row { grid-template-columns: 1fr; } }
.eck label { font-size: .9rem; font-weight: 500; }
.eck-muted { color: var(--eck-muted); font-weight: 400; }
.eck-hint { font-size: .85rem; color: var(--eck-ink); opacity: .8; margin: 0 0 1rem; }

.eck input,
.eck select {
    font: inherit;
    color: var(--eck-ink);
    background: var(--eck-paper);
    border: 1px solid var(--eck-line);
    border-radius: 8px;
    padding: .7rem .8rem;
    width: 100%;
    min-height: 44px;
}
.eck input::placeholder { color: var(--eck-muted); opacity: .7; }
.eck input:focus,
.eck select:focus { outline: none; border-color: var(--eck-accent); box-shadow: 0 0 0 3px var(--eck-accent-soft); }
.eck input:disabled { opacity: .55; cursor: not-allowed; }

.eck-toggle {
    display: flex;
    align-items: center;
    gap: .6rem;
    margin: .4rem 0 1.2rem;
    font-size: .95rem;
    font-weight: 400;
    cursor: pointer;
    user-select: none;
}
.eck-toggle input[type="checkbox"] {
    width: 18px; height: 18px; min-height: 0; margin: 0; flex: none;
    accent-color: var(--eck-accent);
}
.eck-toggle-pill {
    background: var(--eck-surface);
    border: 1px solid var(--eck-line);
    border-radius: 999px;
    padding: .45rem .9rem;
    width: fit-content;
    margin: .2rem 0 .9rem;
}

.eck-link {
    background: none;
    border: 0;
    padding: 0;
    font: inherit;
    font-weight: 500;
    font-size: .95rem;
    color: var(--eck-accent);
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 3px;
    display: inline-block;
    margin-bottom: 1.2rem;
}
.eck-link.eck-danger { color: var(--eck-danger); font-size: .9rem; margin-bottom: .4rem; }

.eck-overlap {
    border: 1px dashed var(--eck-accent);
    background: var(--eck-accent-soft);
    border-radius: 8px;
    padding: 1rem 1rem .6rem;
    margin-bottom: 1.2rem;
}

/* Buttons */
.eck-actions { display: flex; gap: .75rem; flex-wrap: wrap; }
.eck-btn {
    font: inherit;
    font-weight: 600;
    font-size: .95rem;
    line-height: 1.2;
    border-radius: 8px;
    padding: .75rem 1.2rem;
    min-height: 44px;
    cursor: pointer;
    border: 1px solid var(--eck-accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: background .2s, border-color .2s, filter .2s;
}
.eck-btn-primary { background: var(--eck-accent); color: #fff; flex: 1 1 160px; }
.eck-btn-primary:hover { background: var(--eck-accent-hover); border-color: var(--eck-accent-hover); }
.eck-btn-ghost { background: transparent; color: var(--eck-ink); border-color: var(--eck-line); }
.eck-btn-ghost:hover { border-color: var(--eck-ink); }
.eck-btn-small { padding: .5rem .9rem; min-height: 38px; font-size: .88rem; }
.eck-error { color: var(--eck-danger); font-size: .9rem; min-height: 1.2em; margin: .8rem 0 0; }

/* Result */
.eck-result-label { font-size: .9rem; color: var(--eck-muted); margin: 0 0 .25rem; }
.eck-result-main {
    font-family: var(--eck-serif);
    font-size: clamp(2.4rem, 5vw, 3.6rem);
    font-weight: 600;
    line-height: 1.05;
    margin: 0 0 .5rem;
    color: var(--eck-accent);
}
.eck-result-sub { color: var(--eck-muted); font-size: .98rem; margin: 0 0 1.5rem; }
.eck-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; }
@media (max-width: 520px) { .eck-stats { grid-template-columns: 1fr; } }
.eck-stat { background: var(--eck-paper); border-radius: 8px; padding: 1rem; }
.eck-stat strong { display: block; font-family: var(--eck-serif); font-size: 1.6rem; font-weight: 600; }
.eck-stat span { font-size: .85rem; color: var(--eck-muted); }
.eck-note { font-size: .85rem; color: var(--eck-muted); margin: 1.2rem 0 0; }
.eck-result-actions { margin-top: 1.4rem; display: flex; justify-content: flex-end; gap: .6rem; flex-wrap: wrap; }

/* Share */
.eck-share { margin-top: 1.6rem; padding-top: 1.2rem; border-top: 1px solid var(--eck-line); }
.eck-share-label { font-size: .9rem; font-weight: 500; color: var(--eck-muted); margin: 0 0 .7rem; }
.eck-share-buttons { display: grid; grid-template-columns: repeat(4, 1fr); gap: .5rem; }
@media (max-width: 520px) { .eck-share-buttons { grid-template-columns: repeat(2, 1fr); } }
.eck-share-buttons .eck-btn { color: #fff; border: 0; font-size: .88rem; padding: .6rem .5rem; min-height: 42px; }
.eck-share-buttons .eck-btn:hover { filter: brightness(1.08); }
.eck-share-fb { background: #1877F2; }
.eck-share-li { background: #0A66C2; }
.eck-share-x { background: #000; }
.eck-share-mail { background: #D93B2F; }

@media (prefers-reduced-motion: reduce) { .eck * { transition: none !important; } }