/* -------- Base + Retro Defaults -------- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: #ffffff;
    color: #000;
    font-family: "Times New Roman", serif;
    /* Retro vibe */
    font-size: 16px;
    /* Mobile‑friendly */
    line-height: 1.5;
}

/* -------- Vintage Elements -------- */
marquee.welcome {
    font-family: "Times New Roman", serif;
    font-size: 1.25rem;
    color: #d00;
    background: #fffbe6;
    border-bottom: 3px double #d00;
    padding-block: 4px;
}

/* CSS blink (standards‑compliant) */
@keyframes blink {

    0%,
    49% {
        opacity: 1;
    }

    50%,
    100% {
        opacity: 0;
    }
}

.blink {
    animation: blink 1s step-start infinite;
    font-weight: bold;
}

/* -------- Table Wrapper -------- */
.retro-wrapper {
    width: 100%;
    max-width: 600px;
    margin-inline: auto;
    border: 2px solid #000;
    background: #f0f0f0;
    padding: 10px;
}

/* -------- Header / Logo -------- */
.logo {
    font-size: 1.75rem;
    font-weight: bold;
    color: purple;
    text-decoration: none;
}

.logo .dot {
    color: #1a73e8;
}

/* -------- Hero -------- */
.hero {
    text-align: center;
    margin-block: 1.5rem;
}

.hero h1 {
    font-size: 1.8rem;
    color: navy;
    margin-bottom: 0.25rem;
}

.lead {
    font-size: 1rem;
    margin-bottom: 1.25rem;
}

/* -------- Features -------- */
.features {
    margin-block: 2rem;
}

.features h2 {
    font-size: 1.5rem;
    text-align: center;
    color: teal;
    margin-bottom: 1rem;
}

.approach-intro {
    font-size: 1rem;
    margin-inline: auto;
    margin-bottom: 1.25rem;
    max-width: 560px;
    text-align: justify;
}

.feat-table {
    width: 100%;
    border-collapse: collapse;
}

.feat-table td {
    border: 1px solid gray;
    padding: 10px;
    background: #e0e0e0;
    vertical-align: top;
}

.feat-table h3 {
    font-size: 1.2rem;
    margin-top: 0;
    color: navy;
}

/* -------- CTA -------- */
.cta {
    text-align: center;
    padding-block: 1.5rem;
    border-top: 2px dashed #000;
    margin-top: 2rem;
}

.cta h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: maroon;
}

.cta p {
    margin-bottom: 1rem;
}

/* Lime‑green retro button */
.btn.lime {
    background: lime;
    color: #000;
    padding: 10px 20px;
    border: 2px outset gray;
    text-decoration: none;
    font-weight: bold;
}

.btn.lime:hover,
.btn.lime:focus {
    background: #bfff00;
}

.btn.large {
    font-size: 1.1rem;
}

/* -------- Footer -------- */
.site-footer {
    text-align: center;
    font-size: 0.85rem;
    color: black;
    margin-top: 2rem;
}

.site-footer a {
    color: blue;
}

.site-footer a:hover {
    color: red;
}

/* -------- Under‑Construction -------- */
.under-construction {
    text-align: center;
    margin-top: 1.5rem;
}

/* -------- Accessibility focus outline -------- */
a:focus-visible,
button:focus-visible {
    outline: 3px solid #1a73e8;
    outline-offset: 2px;
}

/* -------- Responsive images -------- */
img {
    max-width: 100%;
    height: auto;
}