/* =====================================================
   GLOBAL STYLESHEET
   Dennis DiPasquale Site
   ADA-conscious static site foundation
===================================================== */

/* =========================
   ROOT VARIABLES
========================= */

:root {
    --color-primary: #0082BA;
    --color-primary-dark: #005F88;

    --color-black: #000000;
    --color-white: #FFFFFF;

    --color-gray-light: #F5F7FA;
    --color-gray-medium: #D9E1E8;
    --color-gray-dark: #222222;

    --text-color: #111111;
    --max-width: 1200px;

    --font-main: Arial, Helvetica, sans-serif;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    --border-radius: 8px;

    --transition-speed: 0.2s;
}

/* =========================
   RESET / BASE
========================= */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--text-color);
    background-color: var(--color-white);
    line-height: 1.7;
    font-size: 16px;
}

.about-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 3rem;
    align-items: start;
}

.about-image img {
    width: 300px;
    border-radius: var(--border-radius);
    display: block;
}

@media (max-width: 768px) {

    .about-layout {
        grid-template-columns: 1fr;
    }

    .about-image {
        max-width: 320px;
        margin: 0 auto;
    }
}

/* =========================
   ACCESSIBILITY
========================= */

:focus {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

.skip-link {
    position: absolute;
    left: -999px;
    top: 10px;
    background: var(--color-black);
    color: var(--color-white);
    padding: 12px 18px;
    z-index: 999;
    text-decoration: none;
    border-radius: var(--border-radius);
}

.skip-link:focus {
    left: 10px;
}

.logo-image {
    width: 64px;
    height: 64px;
    display: block;
}
/* =========================
   TYPOGRAPHY
========================= */

h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--color-black);
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.2rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--color-primary-dark);
    text-decoration: none;
    transition: color var(--transition-speed);
}

a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

/* =========================
   LAYOUT
========================= */

.container {
    width: 90%;
    max-width: var(--max-width);
    margin: 0 auto;
}

section {
    padding: var(--spacing-xl) 0;
}

/* =========================
   HEADER / NAVIGATION
========================= */

header {
    background-color: #0D3D56;
	color: #AAAAFF
    border-bottom: 1px solid #D9E1E8;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.logo {
    font-size: 1.4rem;
    font-weight: bold;
    color: var(--color-black);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.nav-links a {
    font-weight: 600;
    color: #CCCCDD;     
}

.nav-links a:hover {
    color: var(--color-primary);
}

/* =========================
   HERO SECTION
========================= */

.hero {
    background-color: var(--color-gray-light);
    padding: var(--spacing-xl) 0;
}

.hero h1 {
    max-width: 900px;
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
}

/* =========================
   BUTTONS
========================= */

.btn {
    display: inline-block;
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 14px 24px;
    border-radius: var(--border-radius);
    font-weight: bold;
    transition: background-color var(--transition-speed);
    margin-right: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.btn:hover {
    background-color: var(--color-primary-dark);
    text-decoration: none;
}

.btn-secondary {
    background-color: var(--color-black);
}

.btn-secondary:hover {
    background-color: var(--color-gray-dark);
}

/* =========================
   CARDS / CONTENT BLOCKS
========================= */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.card {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-medium);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
}

/* =========================
   LISTS
========================= */

ul {
    margin-left: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

/* =========================
   FORMS
========================= */

form {
    max-width: 700px;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

input,
textarea {
    width: 100%;
    padding: 14px;
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--color-gray-medium);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: var(--font-main);
}

textarea {
    min-height: 180px;
    resize: vertical;
}

button {
    border: none;
    cursor: pointer;
}

/* =========================
   FOOTER
========================= */

footer {
    background-color: #0D3D56;
    color: var(--color-white);
    padding: var(--spacing-md) 0;
    text-align: center;
}

footer a {
    color: var(--color-white);
}

footer a:hover {
    color: var(--color-primary);
}

/* =========================
   RESPONSIVE
========================= */

@media (max-width: 768px) {

    h1 {
        font-size: 2.2rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    .navbar {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero {
        padding: var(--spacing-lg) 0;
    }

    section {
        padding: var(--spacing-lg) 0;
    }
}