/* ==========================================================
   CDS Journey — Homepage Test Series (Phase 6)
   Namespace: .rd-series*
   Role: editorial intro + exam destination directory (2×2)
   Not a feature-card grid / not Preparation Process journey
   Palette: Navy / Olive / Gold — no lavender/purple
   ========================================================== */

.rd-series {
    position: relative;
    background: var(--rd-color-white, #FFFFFF);
    padding-block: 56px 60px;
}

.rd-series__inner {
    width: 100%;
}

.rd-series__layout {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

/* ---- Intro ---- */
.rd-series__intro {
    min-width: 0;
    max-width: 36rem;
}

.rd-series__eyebrow {
    position: relative;
    display: inline-block;
    margin: 0 0 14px;
    padding-bottom: 10px;
    font-family: var(--rd-font-mono, "IBM Plex Mono", monospace);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--rd-color-olive, #4B5320);
}

.rd-series__eyebrow::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 2px;
    background: var(--rd-color-gold, #D4AF37);
}

.rd-series__heading {
    margin: 0;
    font-family: var(--rd-font-display, "Fraunces", Georgia, serif);
    font-size: clamp(28px, 6.5vw, 36px);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--rd-color-navy, #1A2B4C);
    text-wrap: balance;
}

.rd-series__lead {
    margin: 14px 0 0;
    max-width: 34rem;
    font-family: var(--rd-font-body, "Inter", Arial, sans-serif);
    font-size: 15px;
    font-weight: 400;
    line-height: 1.55;
    color: var(--rd-text-secondary, #6C757D);
}

.rd-series__cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 20px;
    min-height: 44px;
    font-family: var(--rd-font-body, "Inter", Arial, sans-serif);
    font-size: 15px;
    font-weight: 600;
    color: var(--rd-color-navy, #1A2B4C);
    text-decoration: none;
}

.rd-series__cta:link,
.rd-series__cta:visited {
    color: var(--rd-color-navy, #1A2B4C);
}

.rd-series__cta span {
    display: inline-block;
    transition: transform 180ms ease;
}

.rd-series__cta:hover {
    color: var(--rd-color-olive, #4B5320);
    outline: none;
}

.rd-series__cta:hover span {
    transform: translateX(4px);
}

.rd-series__cta:focus {
    outline: none;
}

.rd-series__cta:focus-visible {
    outline: 2px solid var(--rd-color-navy, #1A2B4C);
    outline-offset: 3px;
    border-radius: 2px;
}

/* ---- Exam destination list ---- */
.rd-series__exams {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.rd-series__exam {
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-areas:
        "code go"
        "name go"
        "meta go";
    align-items: center;
    column-gap: 16px;
    row-gap: 4px;
    min-height: 72px;
    padding: 16px 18px;
    border: 1px solid var(--rd-border-subtle, #DDE2E6);
    border-radius: 14px;
    background: var(--rd-surface-default, #F8F9FB);
    text-decoration: none;
    color: inherit;
    transition:
        border-color 180ms ease,
        background 180ms ease,
        box-shadow 180ms ease;
}

.rd-series__exam:link,
.rd-series__exam:visited {
    color: inherit;
}

.rd-series__exam:hover {
    border-color: rgba(26, 43, 76, 0.28);
    background: var(--rd-color-white, #FFFFFF);
    box-shadow: 0 4px 14px rgba(26, 43, 76, 0.05);
    outline: none;
}

.rd-series__exam:hover .rd-series__exam-name {
    color: var(--rd-color-olive, #4B5320);
}

.rd-series__exam:hover .rd-series__exam-go {
    transform: translateX(4px);
    color: var(--rd-color-olive, #4B5320);
}

.rd-series__exam:active {
    background: var(--rd-surface-default, #F8F9FB);
    box-shadow: none;
}

.rd-series__exam:focus {
    outline: none;
}

.rd-series__exam:focus-visible {
    outline: 2px solid var(--rd-color-navy, #1A2B4C);
    outline-offset: 3px;
}

.rd-series__exam-code {
    grid-area: code;
    font-family: var(--rd-font-mono, "IBM Plex Mono", monospace);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--rd-color-olive, #4B5320);
}

.rd-series__exam-name {
    grid-area: name;
    font-family: var(--rd-font-body, "Inter", Arial, sans-serif);
    font-size: 17px;
    font-weight: 600;
    line-height: 1.3;
    color: var(--rd-color-navy, #1A2B4C);
    transition: color 180ms ease;
}

.rd-series__exam-meta {
    grid-area: meta;
    margin-top: 2px;
    font-family: var(--rd-font-mono, "IBM Plex Mono", monospace);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.04em;
    color: var(--rd-text-secondary, #6C757D);
}

.rd-series__exam-go {
    grid-area: go;
    align-self: center;
    font-size: 18px;
    font-weight: 600;
    line-height: 1;
    color: var(--rd-color-navy, #1A2B4C);
    transition: transform 180ms ease, color 180ms ease;
}

/* When meta is absent, tighten row */
.rd-series__exam:not(:has(.rd-series__exam-meta)) {
    grid-template-areas:
        "code go"
        "name go";
}

/* ==========================================================
   Tablet 768–1199
   ========================================================== */
@media (min-width: 768px) {
    .rd-series {
        padding-block: 72px 80px;
    }

    .rd-series__layout {
        gap: 40px;
    }

    .rd-series__heading {
        font-size: 42px;
        line-height: 1.08;
    }

    .rd-series__lead {
        font-size: 16px;
    }

    .rd-series__exams {
        grid-template-columns: 1fr 1fr;
        gap: 14px;
    }

    .rd-series__exam-name {
        font-size: 18px;
    }
}

/* Wider tablet: two-column editorial + exams */
@media (min-width: 900px) {
    .rd-series__layout {
        display: grid;
        grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
        gap: 48px;
        align-items: center;
    }

    .rd-series__intro {
        max-width: none;
    }
}

/* ==========================================================
   Desktop >=1200
   ========================================================== */
@media (min-width: 1200px) {
    .rd-series {
        padding-block: 96px 104px;
    }

    .rd-series__layout {
        gap: 72px;
    }

    .rd-series__heading {
        font-size: 52px;
        line-height: 1.08;
        max-width: 10ch;
    }

    .rd-series__lead {
        font-size: 17px;
        max-width: 30rem;
    }

    .rd-series__cta {
        margin-top: 24px;
    }

    .rd-series__exams {
        gap: 16px;
    }

    .rd-series__exam {
        min-height: 88px;
        padding: 18px 20px;
        border-radius: 16px;
    }

    .rd-series__exam-code {
        font-size: 12px;
    }

    .rd-series__exam-name {
        font-size: 19px;
    }
}

@media (min-width: 1440px) {
    .rd-series__heading {
        font-size: 54px;
    }

    .rd-series__layout {
        gap: 80px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .rd-series__cta span,
    .rd-series__exam-go,
    .rd-series__exam-name,
    .rd-series__exam {
        transition: none;
    }
}