/* ===========================================================
   styles.css — HW3
   Muath Almansour | CSC457 Internet Technologies
   =========================================================== */

/* ---------- Root variables for consistent theming ---------- */
:root {
    --color-bg: #f4f6fb;
    --color-surface: #ffffff;
    --color-primary: #1f3a93;
    --color-primary-dark: #142a6b;
    --color-accent: #e67e22;
    --color-text: #222831;
    --color-muted: #5a6473;
    --color-border: #d6dbe5;
    --radius: 0.5rem;
    --shadow: 0 2px 8px rgba(20, 42, 107, 0.08);
    --max-width: 70rem;
}

/* ---------- Global reset & inheritance ---------- */
* {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    background-image: linear-gradient(135deg, #f4f6fb 0%, #e8ecf7 100%);
    min-height: 100vh;
}

/* ---------- Headings ---------- */
h1, h2, h3 {
    font-family: "Georgia", "Times New Roman", serif;
    color: var(--color-primary-dark);
    text-align: left;
    margin-top: 0;
}

h1 {
    font-size: 2.25rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: center;
    text-shadow: 1px 2px 4px rgba(20, 42, 107, 0.25);
    margin-bottom: 1rem;
}

h2 {
    font-size: 1.6rem;
    font-weight: 600;
    border-bottom: 3px solid var(--color-accent);
    padding-bottom: 0.35rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    text-shadow: 0 1px 1px rgba(0, 0, 0, 0.05);
}

h3 {
    font-size: 1.2rem;
    font-weight: 600;
    font-style: italic;
    color: var(--color-primary);
    margin-top: 1.25rem;
    margin-bottom: 0.5rem;
}

/* ---------- Paragraphs & generic text ---------- */
p {
    margin: 0.75rem 0;
    text-align: justify;
}

strong {
    color: var(--color-primary-dark);
    font-weight: 700;
}

blockquote {
    border-left: 4px solid var(--color-accent);
    background-color: #fff8ef;
    margin: 1rem 0;
    padding: 0.75rem 1.25rem;
    font-style: italic;
    color: var(--color-muted);
    border-radius: 0 var(--radius) var(--radius) 0;
}

/* ---------- Links ---------- */
a {
    color: var(--color-primary);
    text-decoration: underline;
    transition: color 0.2s ease-in-out;
}

a:hover,
a:focus {
    color: var(--color-accent);
}

/* ---------- Header ---------- */
header {
    background-color: var(--color-primary);
    background-image: linear-gradient(120deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: #ffffff;
    padding: 2rem 1.5rem 1.25rem;
    border-bottom: 5px solid var(--color-accent);
    box-shadow: var(--shadow);
}

header h1 {
    color: #ffffff;
}

/* ---------- Navigation ---------- */
nav {
    background-color: rgba(255, 255, 255, 0.08);
    padding: 0.75rem 1rem;
    margin-top: 1rem;
    border-radius: var(--radius);
    text-align: center;
    font-size: 1.05rem;
}

nav a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.4rem 0.9rem;
    margin: 0 0.25rem;
    border-radius: var(--radius);
    transition: background-color 0.2s ease, color 0.2s ease;
}

nav a:hover,
nav a:focus {
    background-color: var(--color-accent);
    color: #ffffff;
}

/* ---------- Main content container ---------- */
main {
    max-width: var(--max-width);
    width: 92%;
    margin: 2rem auto;
    padding: 2rem 2.5rem;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* ---------- Lists ---------- */
ul, ol, dl {
    margin: 0.75rem 0 1rem;
    padding-left: 1.5rem;
    line-height: 1.7;
}

ul {
    list-style-type: square;
    list-style-position: outside;
}

ol {
    list-style-type: decimal;
    list-style-position: outside;
}

li {
    margin-bottom: 0.35rem;
}

dl {
    padding-left: 0;
}

dt {
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-top: 0.75rem;
}

dd {
    margin-left: 1.25rem;
    color: var(--color-muted);
}

/* ---------- Sections (CV) ---------- */
section {
    margin-bottom: 1.5rem;
    padding: 0.5rem 0;
}

article {
    margin-bottom: 2rem;
}

/* ID selectors for unique CV sections */
#summary {
    background-color: #f0f4ff;
    border-left: 4px solid var(--color-primary);
    padding: 1rem 1.25rem;
    border-radius: 0 var(--radius) var(--radius) 0;
}

#skills ul,
#certifications ul,
#achievements ul {
    list-style-type: "✔  ";
}

#languages p {
    text-align: center;
    font-size: 1.1rem;
}

/* Highlight reusable class */
.highlight {
    background-color: #fff3cd;
    padding: 0.1rem 0.35rem;
    border-radius: 3px;
    font-weight: 600;
    color: #7a5b00;
}

/* ---------- Projects (figures & images) ---------- */
figure {
    margin: 1rem 0;
    padding: 0.75rem;
    background-color: #f8f9fc;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    text-align: center;
    max-width: 28rem;
}

figure img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}

figcaption {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    font-style: italic;
    color: var(--color-muted);
}

/* ---------- Contact form ---------- */
form {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background-color: #f8f9fc;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    max-width: 32rem;
}

label {
    display: block;
    font-weight: 600;
    color: var(--color-primary-dark);
    margin-bottom: 0.25rem;
    text-transform: capitalize;
}

input[type="text"],
input[type="email"],
textarea {
    width: 100%;
    padding: 0.6rem 0.75rem;
    margin-bottom: 1rem;
    font-family: inherit;
    font-size: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background-color: #ffffff;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(31, 58, 147, 0.15);
}

textarea {
    resize: vertical;
    min-height: 8rem;
}

input[type="submit"] {
    background-color: var(--color-primary);
    color: #ffffff;
    border: none;
    padding: 0.75rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

input[type="submit"]:hover,
input[type="submit"]:focus {
    background-color: var(--color-accent);
    transform: translateY(-1px);
}

/* ---------- Footer ---------- */
footer {
    max-width: var(--max-width);
    width: 92%;
    margin: 1rem auto 2rem;
    padding: 1rem 1.5rem;
    text-align: center;
    color: var(--color-muted);
    font-size: 0.9rem;
    border-top: 2px solid var(--color-border);
}

footer a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
}

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

/* ---------- Responsive design ---------- */
@media (max-width: 40rem) {
    h1 {
        font-size: 1.65rem;
    }

    h2 {
        font-size: 1.3rem;
    }

    main {
        padding: 1.25rem 1rem;
        width: 95%;
    }

    nav a {
        display: inline-block;
        margin: 0.15rem 0;
        padding: 0.35rem 0.6rem;
    }
}