/* =========================================================
   Engineering Corner – Homepage Styles (home.css)
   Uses variables from style.css
========================================================= */

/* -----------------------------
   HERO BLOCK
------------------------------ */

.ec-hero {
    max-width: 1100px;
    margin: 24px auto 40px auto;
    padding: 32px 28px;
    border-radius: var(--ec-radius-lg);
    background: var(--ec-bg-surface);
    border: 1px solid var(--ec-border-subtle);
    box-shadow: var(--ec-shadow-soft);
    position: relative;
    overflow: hidden;
}

/* subtle accent halos */
.ec-hero::before {
    content: "";
    position: absolute;
    inset: -40%;
    background:
        radial-gradient(circle at 0% 0%, var(--ec-accent-soft), transparent 60%),
        radial-gradient(circle at 100% 100%, var(--ec-accent-soft), transparent 60%);
    opacity: 0.4;
    pointer-events: none;
}

/* inner contrast layer */
.ec-hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.9),
        rgba(255, 255, 255, 0.7)
    );
    mix-blend-mode: lighten;
    opacity: 0.7;
    pointer-events: none;
    z-index: 0;
}

:root[data-theme="dark"] .ec-hero::after {
    background: linear-gradient(
        135deg,
        rgba(15, 23, 42, 0.98),
        rgba(15, 23, 42, 0.88)
    );
    mix-blend-mode: normal;
    opacity: 0.95;
}

.ec-hero-inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.1fr);
    gap: 2rem;
    align-items: flex-start;
}

@media (max-width: 900px) {
    .ec-hero-inner {
        grid-template-columns: 1fr;
    }
}

/* left side text */

.ec-hero-label {
    display: inline-block;
    margin-bottom: 0.3rem;
    padding: 0.15rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    background: var(--ec-accent-soft);
    color: var(--ec-text-muted);
}

.ec-hero-text h1 {
    margin: 0 0 0.4rem;
    font-size: clamp(2.1rem, 4vw, 2.7rem);
    line-height: 1.15;
    color: var(--ec-heading);
}

.ec-subcopy {
    margin: 0;
    max-width: 32rem;
    font-size: 0.98rem;
    color: var(--ec-text-muted);
}

/* CTA buttons reused from earlier version */

.ec-hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin: 1.2rem 0 0.4rem;
}

.ec-btn-primary,
.ec-btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.55rem 1.3rem;
    border-radius: 999px;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
    transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease,
                background-color 0.18s ease, color 0.18s ease;
}

.ec-btn-primary {
    background: var(--ec-accent);
    color: #ffffff;
    box-shadow: 0 10px 24px var(--ec-accent-glow);
}

.ec-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--ec-shadow-hover);
}

.ec-btn-ghost {
    background: transparent;
    border: 1px solid var(--ec-border-subtle);
    color: var(--ec-text-main);
}

.ec-btn-ghost:hover {
    background: var(--ec-accent-soft);
    border-color: var(--ec-accent);
}

.ec-note {
    margin: 0.2rem 0 0;
    font-size: 0.8rem;
    color: var(--ec-text-muted);
}

/* -----------------------------
   FEATURED COURSE PANEL
------------------------------ */

.ec-featured {
    border-radius: var(--ec-radius-md);
    background: var(--ec-bg-surface);
    border: 1px solid var(--ec-border-subtle);
    box-shadow: var(--ec-shadow-soft);
    padding: 1rem 1.1rem 0.9rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.ec-featured-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--ec-text-muted);
    margin-bottom: 0.1rem;
}

.ec-featured-card {
    display: block;
    padding: 0.7rem 0.8rem;
    border-radius: 12px;
    border: 1px solid var(--ec-border-subtle);
    background: var(--ec-bg-surface);
    text-decoration: none;
    transition: border-color 0.18s ease, background-color 0.18s ease,
                transform 0.18s ease, box-shadow 0.18s ease;
}

.ec-featured-card:hover {
    border-color: var(--ec-accent);
    background: var(--ec-accent-soft);
    transform: translateY(-1px);
    box-shadow: 0 8px 20px var(--ec-accent-glow);
}

.ec-featured-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--ec-heading);
    margin-bottom: 0.15rem;
}

.ec-featured-tagline {
    font-size: 0.9rem;
    color: var(--ec-text-muted);
    margin-bottom: 0.4rem;
}

.ec-featured-status {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--ec-text-muted);
}

/* indicators under featured card */

.ec-featured-crumbs {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    margin-top: 0.3rem;
}

.featured-dot {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    border: 1px solid var(--ec-border-subtle);
    background: transparent;
    transition: background-color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.featured-dot.active {
    background: var(--ec-accent);
    border-color: var(--ec-accent);
    transform: scale(1.1);
}

.featured-legend {
    margin-left: 0.25rem;
    font-size: 0.75rem;
    color: var(--ec-text-muted);
}

/* -----------------------------
   SECTIONS BELOW HERO
------------------------------ */

.ec-section {
    max-width: 1100px;
    margin: 0 auto 32px auto;
    padding: 20px 24px;
    border-radius: var(--ec-radius-lg);
    background: var(--ec-bg-surface);
    border: 1px solid var(--ec-border-subtle);
    box-shadow: var(--ec-shadow-soft);
}

.ec-section h2 {
    margin: 0 0 0.9rem;
    font-size: 1.3rem;
    color: var(--ec-heading);
}

/* course grid for both published & coming soon */

.ec-course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}

/* Limit size of rotating hero image */
.ec-featured-thumb {
    width: 100%;
    max-width: 420px;       /* hard limit on visual width */
    aspect-ratio: 16 / 9;
    border-radius: 12px;
    overflow: hidden;
    margin: 0 auto;         /* centers image in the feature card */
}

.ec-featured-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}


/* individual course cards */

.ec-course-card {
    border-radius: var(--ec-radius-md);
    border: 1px solid var(--ec-border-subtle);
    padding: 0.7rem 0.8rem;
    background: var(--ec-bg-surface);
    text-decoration: none;
    color: var(--ec-text-main);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease,
                background-color 0.18s ease;
}

.ec-course-card:hover {
    border-color: var(--ec-accent);
    box-shadow: var(--ec-shadow-hover);
    transform: translateY(-2px);
    background: var(--ec-accent-soft);
}

.ec-course-card.coming {
    cursor: default;
}

.ec-course-card.coming:hover {
    border-color: var(--ec-border-subtle);
    box-shadow: var(--ec-shadow-soft);
    transform: none;
    background: var(--ec-bg-surface);
}

.ec-course-name {
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--ec-heading);
}

.ec-course-desc {
    font-size: 0.86rem;
    color: var(--ec-text-muted);
}

/* planned tag for coming soon */

.ec-course-tag {
    margin-top: 0.15rem;
    align-self: flex-start;
    padding: 0.1rem 0.5rem;
    border-radius: 999px;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    border: 1px dashed var(--ec-border-subtle);
    color: var(--ec-text-muted);
}

.ec-course-thumb {
    width: 100%;
    max-width: 420px;        /* prevents BIG thumbnails */
    aspect-ratio: 16 / 9;
    margin: 0 auto;          /* centers thumbnail */
    border-radius: 10px;
    overflow: hidden;
}

.ec-course-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}