* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    scroll-behavior: smooth;
}

html {
    background-color: #f9f9f9;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.com-gap {
    padding: 100px 0;
}

:root {
    --primary-color: #0056b3;
    --secondary-color: #003d80;
    --accent-color: #007bff;
    --light-color: #f0f4f8;
    --dark-color: #222;
    --text-color: #444;
    --border-radius: 8px;
    --transition-speed: 0.3s;
}

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

a:hover,
a:focus {
    color: var(--accent-color);
    outline: none;
}

.btn {
    background-color: var(--primary-color);
    color: white;
    display: inline-block;
    padding: 12px 25px;
    border: none;
    border-radius: var(--border-radius);
    text-transform: uppercase;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-speed);
    box-shadow: 0 4px 6px rgba(0, 86, 179, 0.3);
}

.btn:hover,
.btn:focus {
    background-color: #004080;
    outline: none;
    box-shadow: 0 0 12px #004080;
}

h1 {
    font-size: 4.5rem;
    text-transform: uppercase;
    line-height: 1.1;
    color: var(--dark-color);
    margin-bottom: 25px;
}

h2 {
    font-size: 3rem;
    text-transform: uppercase;
    line-height: 1.3;
    color: var(--dark-color);
    margin-bottom: 40px;
}

h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 40px;
    background-color: #003366;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo a p {
    font-size: 2.25rem;
    text-transform: uppercase;
    color: #f0f0f0;
    font-weight: 800;
    letter-spacing: 2px;
}

.menu {
    display: none;
}

.nav-list {
    z-index: 100;
}

.list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;
}

.list-item li a {
    color: #f0f0f0;
    text-transform: capitalize;
    font-size: 1.3rem;
    font-weight: 700;
    padding: 10px 18px;
    border-radius: 6px;
    transition: background-color 0.4s ease, color 0.4s ease;
}

.list-item li a:hover,
.list-item li a:focus {
    background-color: #0059b3;
    color: #fff;
    outline: none;
    box-shadow: 0 0 8px #0059b3;
}

/* banner */
.banner-contain {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.banner-left figure img {
    width: 100%;
    max-width: 350px;
    height: auto;
    object-fit: cover;
    clip-path: polygon(25% 0%, 100% 0%, 100% 100%, 25% 100%, 0% 50%);
    border-radius: var(--border-radius);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.banner-right p {
    padding: 20px 0;
    font-size: 1.25rem;
    color: var(--text-color);
    max-width: 600px;
}

/* education */
.edu-contain-head {
    text-align: center;
    color: var(--primary-color);
    font-size: 4.5rem;
    text-transform: uppercase;
    border-bottom: 5px solid var(--accent-color);
    margin-bottom: 50px;
    font-weight: 800;
}

.education-contain {
    display: flex;
    justify-content: space-around;
    align-items: flex-start;
    gap: 30px;
    color: var(--text-color);
    flex-wrap: wrap;
}

.edu-head,
.exp-head {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 30px;
    text-transform: capitalize;
    border-bottom: 3px solid var(--accent-color);
    text-align: center;
    font-weight: 700;
}

.cardE {
    background-color: var(--light-color);
    padding: 30px 60px;
    margin-bottom: 20px;
    border-radius: var(--border-radius);
    text-transform: capitalize;
    box-shadow: 0 6px 12px rgba(0, 86, 179, 0.15);
    transition: transform var(--transition-speed);
    max-width: 550px;
}

.cardE h4 {
    font-size: 1.75rem;
    margin-bottom: 10px;
}

.cardE p {
    font-size: 1.1rem;
    line-height: 1.5;
}

.cardE:hover,
.cardE:focus-within {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 86, 179, 0.3);
}

@media screen and (max-width: 768px) {
    .cardE {
        padding: 20px 40px;
        max-width: 100%;
    }
    .cardE h4 {
        font-size: 1.5rem;
    }
    .cardE p {
        font-size: 1rem;
    }
}

.cardE:hover,
.cardE:focus-within {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 86, 179, 0.2);
}

/* about */
.about-contain {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
    padding: 20px 0;
}

.about-text {
    flex: 1 1 40%;
    color: var(--text-color);
    font-size: 1.1rem;
    line-height: 1.6;
    padding-right: 20px;
}

.about-text h2 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 15px;
}

.about-form {
    flex: 1 1 50%;
    background-color: var(--light-color);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(0, 86, 179, 0.1);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.about-form label {
    font-weight: 600;
    color: var(--primary-color);
}

.about-form input,
.about-form textarea {
    padding: 12px 15px;
    border: 1px solid var(--primary-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    width: 100%;
    transition: border-color var(--transition-speed);
}

.about-form input:focus,
.about-form textarea:focus {
    border-color: var(--accent-color);
    outline: none;
}

.about-form button.btn {
    align-self: center;
    padding: 12px 30px;
    font-weight: 700;
    box-shadow: 0 4px 8px rgba(0, 86, 179, 0.3);
    transition: box-shadow var(--transition-speed);
}

.about-form button.btn:hover,
.about-form button.btn:focus {
    box-shadow: 0 6px 12px rgba(0, 123, 255, 0.5);
    outline: none;
}

.about-contain input,
.about-contain textarea {
    padding: 12px 20px;
    background-color: var(--light-color);
    border: 1px solid var(--primary-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    width: 100%;
    max-width: 400px;
    transition: border-color var(--transition-speed);
}

.about-contain input:focus,
.about-contain textarea:focus {
    border-color: var(--accent-color);
    outline: none;
}

.about-form {
    display: flex;
    justify-content: center;
    align-items: start;
    flex-direction: column;
    gap: 15px;
    width: 100%;
    max-width: 450px;
}

.about-form h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    text-transform: uppercase;
    /* text-align: start; */
}

#message {
    min-height: 100px;
    resize: vertical;
}

.last-section {
    background-color: var(--secondary-color);
    text-align: center;
    padding: 15px 0;
}

.last-section p {
    color: var(--light-color);
    font-size: 1rem;
}

/* social links */
.social-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-top: 20px;
}
.ipad-links a i {
    color: var(--primary-color);
    font-size: 3rem;
    transition: color var(--transition-speed);
}

.ipad-links a i:hover,
.ipad-links a i:focus {
    color: var(--accent-color);
    outline: none;
}

/* Responsive */
@media screen and (max-width: 991px) {
    .banner-contain {
        flex-direction: column;
        text-align: center;
    }
    .education-contain {
        flex-direction: column;
        align-items: center;
    }
    .about-contain {
        flex-direction: column;
    }
    .about-form {
        max-width: 100%;
        text-align: start;
    }
    input, #message {
        min-width: 100%;
    }
}

@media screen and (max-width: 768px) {
    .menu {
        display: block;
    }
    .nav-list {
        display: none;
        position: absolute;
        top: 60px;
        right: 10px;
        background-color: white;
        border: 1px solid var(--primary-color);
        border-radius: var(--border-radius);
        padding: 10px;
        box-shadow: 0 4px 8px rgba(0, 86, 179, 0.2);
    }
    .list-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    .list-item li {
        padding: 10px 20px;
        width: 100%;
    }
    .list-item li a {
        font-size: 1.3rem;
    }
}

@media screen and (max-width: 576px) {
    h1 {
        font-size: 2.5rem;
    }
    h2 {
        font-size: 1.75rem;
    }
    h3 {
        font-size: 1.25rem;
    }
}

@media screen and (max-width: 320px) {
    h1 {
        font-size: 2rem;
    }
    h2 {
        font-size: 1.25rem;
    }
}