*, *::before, *::after {
    margin: 0;
    padding: 0;
}
:root {
    --primaryColor: #4f46e5;
    --secondaryColor: #6366f1;
    --darkColor: #1f2937;
    --lightColor: #f3f4f6;
    --accentColor: #66bbea;
    --text-color: #374151;
    --bg-dark: #111827;
    --bg-light: #f9fafb;
    --font-family: 'Inter', sans-serif;
    --boxShadow: 0 2px 4px rgba(0,0,0, 0.05)
}
.darkMode { 
    --primaryColor: #818cf8;
    --secondaryColor: #6366f1;
    --darkColor: #f3f4f6;
    --lightColor: #1f2937; 
    --accentColor: #66bbea; 
    --text-color: #e5e7eb;    
    --bg-dark: #0f172a;      
    --bg-light: #1e293b; 
    --font-family: 'Inter', sans-serif;
    --boxShadow: 0 2px 4px rgba(0,0,0, 0.4);
    transition: all .3s ease-in-out;
}
/* sun and moon icon */
.sun-icon, .moon-icon {
    font-size: 1.5rem;
    cursor: pointer;
    transition: color .3s ease opacity 0.3s ease;
    margin-right: 2rem;
}
.moon-icon {
    display: none; /* hide moon icon on light bg */
}
.darkMode .sun-icon {
    display: none; /* hide sun icon in dark bg */
}
.darkMode .moon-icon {
    display: inline-block; /* show moon icon in dark bg */
}
/* main body style */
body {
    font-family: var(--font-family);
    background-color: var(--bg-light);
    color: var(--text-color);
    line-height: 1.6;
}
.container {
    max-width: 1200px;
    padding: 0 1.5rem;
    margin: 0 auto;
}
 h2 {
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    color: var(--darkColor);
    margin-bottom: 1.5rem;
 }
 .hero h2,  .contact h2 {
    color: var(--lightColor);
 }
/* header and nav styles */
header {
    background-color: var(--bg-light);
    box-shadow: var(--boxShadow);
    position: sticky;
    top: 0;
    transition: background-color 0.3s ease, color 0.3s ease;
    z-index: 55;
    padding: 0.9rem  0 0 0.9rem ;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
header .container {
    display: flex;
    flex-direction: column;
/*     padding: 0.5rem 0;
 */    align-items: center;
}
header h1 {
    font-size: clamp(1.4rem, 2.5vw + 0.5rem, 2.5rem);
    font-weight: 700;
    color: var(--darkColor);
    width: fit-content;
}
/* navigation style */
nav {
    position: fixed;
    left: 0;
    top: 0;
    width: 80%;
    height: 100%;
    background-color: var(--bg-light);
    display: flex;
     align-items: center;
     justify-content: center;
     gap: 3rem;
     flex-direction: column;
    transform: translateY(-100%);
}
nav.open {
    transform: translateY(0);
    transition: transform 0.3s ease-in-out;
}
nav a  {
    color: var(--text-color);
    font-weight: 600;
    margin: 0 0.5rem;
    font-size: 1.5rem;
    transition: color .3s ease;
    text-transform: capitalize;
    text-decoration: none;
    font-size: 1.2rem;
}
nav a:hover {
    color: var(--primaryColor);
}

/* Dark mode and toggle menu style */
#menuBtn {
    background: transparent;
    border: transparent;
    color: var(--darkColor);
    font-size: 1.7rem;
    cursor: pointer;
    display: block;
    outline: transparent;
}
#themeToggle {
    background: transparent;
    color: navy;
    border: transparent;
    outline: transparent;
    width: fit-content;
    cursor: pointer;
    font-size: 1.5rem;
    
 }
.darkMode #themeToggle {
    color: white;
}
.darkMode header {
    background-color: var(--bg-dark);
}   
.darkmode nav a {
    color: var(--darkColor);
}
/* hero section style */
.hero {
    background: var(--darkColor);
    text-align: center;
    margin: 6rem 1.5rem;
    padding: 3rem 0;
    color: var(--lightColor);
}

button, .heroBtn {
    background-color: var(--primaryColor);
color: var(--lightColor);
font-weight: 600;
font-size: 1rem;
transition: background-color .3s ease, transform .3s ease;
padding: 0.75rem 2rem;
text-decoration: none;
border-radius: 9999px;
}
.heroBtn:hover, button:hover {
    background-color: var(--secondaryColor);
    transform: scale(1.05);
}
 p {font-weight: 400;
    text-align: center;
    font-size: clamp(1.25rem, 1.4vw + 0.5rem, 2rem);
    margin-bottom: 2rem;
}
/* portfolio section style */
.portfolio {
    padding: 5rem 0;
    background-color: var(--bg-light);
}

.imageGallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 4rem;
}
.imageGallery img {
    width: 100%;
    object-fit: cover;
    box-shadow: 0 4px 6px rgba(0,0,20,0.3);
    height: 300px;
    border-radius: 0.5rem;
    transition: transform .3s ease, box-shadow;
    cursor: pointer;
}
.imageGallery img:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.modal {
    display: none;
    position: fixed;
    z-index: 100;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(44, 11, 11, 0.9);
    justify-content: center;
    align-items: center;
}
#modalImg {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 80%;
    object-fit: contain;
}
#closeBtn {
    position: absolute;
    top: 20px;
    right: 35px;
    color: var(--lightColor);
    font-size: 50px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
}
.closeBtn:hover, .closeBtn:focus {
    color: #bbb;
    text-decoration: none;
}
/* about me */
.about {
    padding: 5rem 0;
    background-color: var(--bg-light);
} 
.darkMode .about {
    background-color: var(--bg-dark);   }
.aboutContent {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}
.about img {
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    height: 12rem;
    width: 12rem;
    transition: transform .3s ease;
}
.about img:hover {
    transform: scale(1.15);
}
.textContent   {
    max-width: 600px;
 }
.textContent p {
color: var(--darkColor);
font-size: 1.125rem;
text-align: justify;
}

 /* contact section */

 .contact {
    padding: 5rem 0;
    background-color: var(--bg-dark);
    color: var(--lightColor);
    border-top: 2px solid #374151;
 }
#contact   p {
max-width: 600px;
margin: 0 auto;
text-align: justify;
}
.contact form {
    max-width: 400px;
    margin: 0 auto;
}
.formGroup {
    margin-bottom: 1.5rem;
}
.formGroup label {
    display: block;
    font-size: 1rem;
    color: var(--lightColor);
    font-weight: 500;
    margin-bottom: 0.5rem;
}
.formGroup input, .formGroup textarea {
    width: 90%;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    background-color: #374151;
    border: 1px solid #4b5563;
    transition: all .2s ease;
    color: var(--lightColor);
}
.formGroup input:focus, .formGroup textarea:focus{
outline: none;
border-color: var(--primaryColor);
box-shadow: 0 0 0 2px rgba(99,102,241,0.5);
}
.submitBtn {
    outline: none;
    border: transparent;
    background-color: var(--primaryColor);
    color: var(--lightColor);
    display: block;
    margin: 1.5rem auto 0 auto;}
/* footer */ 

footer {
    background-color: var(--bg-dark);
    color: var(-);
    padding: 2rem;
    text-align: center;
    border-top: 2px solid #374151;
}
 

 .contactText{
    color: white;
}
.darkMode .contactH2 {
    color: white;
}
@media (min-idth: 768px) {
    header .container {
        flex-direction: row;
        justify-content: space-between;
        padding: 1rem 1.5rem;
    }
    nav {
        margin-top: 0;
    }
    .aboutContent {
        flex-direction: row;
        text-align: left;
        gap: 4rem;
    }
    .about img {
        margin-bottom: 0;
        height: 15rem;
        width: 15rem;
    }
}
@media (min-width:1024px) {
    .hero {
        margin: 8rem 1.5rem;
        padding: 4rem 0;
    }
    .aboutContent {
        flex-direction: row;
        text-align: left;
        gap: 6rem;
        justify-content: space-between;
        align-items: center;
    }
    .about img {
        height: 20rem;
        width: 20rem;
    }
    .contact form {
    max-width: 600px;
}
.submitBtn {
    display: block;
    margin: 1.5rem auto 0 auto;
}
#menuBtn {
    display: none;}
    nav {
        position: static;
        width: auto;
        height: auto;
        background: transparent;
        transform: translateY(0);
        flex-direction: row;
        gap: 2rem;
    }
    nav a {
        font-size: 1rem;
    }

}

.topLink {
    width: 40px;
    height: 40px;
    position: fixed;
    right: 2rem;
    bottom: 7rem;
    border-radius: 50%;
    border: transparent;
    outline: transparent;
    cursor: pointer;
    background-color:#6366f1;
    color: white;
    font-size: 1rem;
    padding: 5px;
    transition: background-color .3s ease-in-out, box-shadow .3s ease-in-out;
    display: none;
    place-items: center;
    scroll-behavior: smooth;
}
.topLink:hover {
    background-color: #4f46e5;
    box-shadow: 0 4px 6px 6px rgba(0,0,0,0.2);
}
.topLink.show {
    display: grid;
    z-index: 1100;
}