/******************************************************
 * 1. GLOBAL HELIOS PAGE OVERRIDES
 ******************************************************/

/* Remove sidebar offset */
.helios-page #main {
    margin-left: 0px !important;
}

/******************************************************
 * 2. HERO HEADER (full-width background image)
 ******************************************************/

.helios-header {
    position: relative !important;
    background-image: url("../../images/HELIOS_large.jpg") !important;
    background-size: cover !important;
    background-position: center !important;
    background-repeat: no-repeat !important;
    min-height: 60vh;
    background-color: transparent !important;   /* override .dark */
}

/* Remove Prologue overlay */
section.helios-header.cover:before,
.helios-header:before {
    background: none !important;
}

/* Hero text styling */
.helios-header header h2,
.helios-header header p {
    color: white;
    text-shadow: 0 2px 6px rgba(0,0,0,0.45);
}

/******************************************************
 * 3. TYPOGRAPHY (Intro text, acronym)
 ******************************************************/

/* Intro / section text */
.helios-text {
    font-size: 1.25rem;
    line-height: 1.7;
    color: #d6d6d6;
}

/* HELIOS acronym enlarged letters */
.helios-acronym .big-letter {
    font-weight: 700;
    font-size: 1.6em;
    line-height: 0.9;
    display: inline-block;
    margin-right: 2px;
    color: #ffffff;
}

/* Left-justified paragraph blocks */
.left-paragraphs {
    text-align: left;
}

/******************************************************
 * 4. ADDITIONAL DESCRIPTIVE SECTION
 ******************************************************/

.helios-extra {
    padding-top: 3rem;
    padding-bottom: 3rem;
}

.helios-extra h3 {
    margin-bottom: 1.2rem;
    color: #ffffff;
    font-size: 1.7rem;
}

/******************************************************
 * 5. TABLE STYLING
 ******************************************************/

/* Base table structure */
.helios-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1.5rem;
    font-size: 1.05rem;
}

/* Table cells */
.helios-table th,
.helios-table td {
    padding: 0.7rem 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.15);
}

/* Table header (match body color) */
.helios-table th {
    text-align: left;
    font-weight: 600;
    color: #ffffff;
    background: none;
}

/* Additional specificity to override Prologue defaults */
.helios-page .helios-table th,
.helios-page #main .helios-table thead tr th {
    background: none !important;
    color: #ffffff !important;
    border-bottom: 1px solid rgba(255,255,255,0.15) !important;
}

/* Row hover effect */
.helios-table tr:hover {
    background: rgba(255,255,255,0.06);
}

/* Narrower table (≈20%) and centered */
.helios-page .helios-table {
    width: 65% !important;   /* 20% narrower */
    margin: 0 auto;
}

/******************************************************
 * 6. FOOTER (kept for completeness)
 ******************************************************/

.helios-footer {
    text-align: center;
    margin: 3rem 0;
}

.helios-footer a {
    color: #ffffff;
    text-decoration: underline;
}

/******************************************************
 * 7. RESPONSIVE ADJUSTMENTS
 ******************************************************/

@media screen and (max-width: 768px) {
    .helios-text {
        font-size: 1.1rem;
    }
    .helios-image {
        max-width: 320px;
    }
}