* Reset */
* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Arial', sans-serif; }

html, body {
  background: #0f172a;
}

/* Hero Slide */
#home {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background: linear-gradient(110deg, #0f172a 50%, #1e3a5f 50%);
  color: #ffffff; /* white text for contrast */
}

/* Tabs inside hero */
.hero-tabs {
  position: absolute;
  top: 20px;
  width: 100%;
  display: flex;
  justify-content: center;
}

.hero-tabs ul {
  list-style: none;
  display: flex;
  gap: 40px;
  background: rgba(44, 62, 80, 0.85); /* dark slate background */
  padding: 14px 30px;
  border-radius: 12px;
}

.hero-tabs ul li a {
  text-decoration: none;
  color: #ffffff; /* white text */
  font-weight: 800;
  font-size: 1.7rem; /* bigger tabs */
  padding: 12px 25px;
  border-radius: 8px;
  transition: 0.3s;
}

.hero-tabs ul li a:hover {
  background-color: #3f51b5; /* hover accent */
  transform: scale(1.05);
}

/* Hero Content */
.hero-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 80%;
  max-width: 1200px;
  margin-top: 90px; /* push below tabs */
}

.hero-text h1 { font-size: 4.5rem; margin-bottom: 15px; }
.hero-text h2 { font-size: 3rem; margin-bottom: 20px; }
.hero-text p { font-size: 1.6rem; margin-bottom: 25px; }

.hero-image img {
  width: 320px;
  height: 320px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 10px 25px rgba(0,0,0,0.4);
  transition: transform 0.5s;
}
.hero-image img:hover { transform: scale(1.05); }

/* Button */
.btn {
  padding: 16px 40px; 
  background-color: #2c3e50; /* dark slate button */
  color: #fff;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.3rem; /* bigger button text */
  transition: 0.3s;
}
.btn:hover { background-color: #3f51b5; color: #fff; }

/* Logo Circle */
.logo-circle {
    width: 300px;
    height: 300px;
    border-radius: 50%;
  
    display: flex;
    justify-content: center;
    align-items: center;
  
    font-size: 120px;
    font-weight: 700;
    color: #ffffff;
  
    /* blended theme gradient */
    background: linear-gradient(135deg, #1e3a5f, #2f4f6f);
  
    box-shadow: 0 15px 40px rgba(0,0,0,0.45);
  
    transition: transform 0.3s ease;
    border: 3px solid rgba(255,255,255,0.15);
  }
  
  .logo-circle:hover {
    transform: scale(1.05);
  }
/* Responsive */
@media(max-width: 900px){
  .hero-container { flex-direction: column; text-align: center; gap: 25px; }
  .hero-image img { width: 220px; height: 220px; }
  .hero-text h1 { font-size: 3rem; }
  .hero-text h2 { font-size: 2rem; }
  .hero-tabs ul { gap: 20px; padding: 12px 20px; }
  .hero-tabs ul li a { font-size: 1.3rem; padding: 10px 15px; }
  .hero-text p { font-size: 1.4rem; }
}

/* Slide 2: About Me */
#about {
    background: linear-gradient(160deg, #1e3a5f 0%, #0f172a 45%, #172554 100%);
    color: #ffffff;
    display: flex;
    flex-direction: column;
    justify-content: center; /* vertically center */
    align-items: center;     /* horizontally center */
    min-height: 100vh;       /* full screen height */
    padding: 0 40px;         /* side padding */
    text-align: center;
  }
  
  #about h2 {
    font-size: 4rem;         /* bigger heading like hero */
    font-weight: 800;
    margin-bottom: 30px;
  }
  
  .about-container p {
    font-size: 2rem;         /* bigger paragraph */
    max-width: 900px;        /* wider text block */
    line-height: 2.2;        /* more spacing */
    margin: auto;
  }
  
  @media(max-width: 900px){
    #about h2 { font-size: 3rem; }
    .about-container p { font-size: 1.6rem; line-height: 1.8; }
  }

/* Skills */

/* Skills */
#skills {
    background: linear-gradient(135deg, #0f172a 0%, #134e4a 42%, #0f172a 100%);
    color: #ffffff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 0 40px;
    text-align: center;
  }
  
  #skills h2 {
    font-size: 4.3rem;
    margin-bottom: 50px;
  }
  
  .skills-grid {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 1200px;
  }
  
  .skill-box {
    background: rgba(44, 62, 80, 0.85);
    padding: 30px 25px;
    border-radius: 15px;
    min-width: 250px;
    max-width: 300px;
    text-align: left;
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
    transition: transform 0.3s, background 0.3s;
  }
  
  .skill-box h3 {
    font-size: 2.1rem;
    margin-bottom: 15px;
    border-bottom: 2px solid #3f51b5;
    display: inline-block;
    padding-bottom: 5px;
  }
  
  .skill-box ul {
    margin-left: 20px;
    font-size: 1.5rem;
    line-height: 1.8;
  }
  
  .skill-box:hover {
    transform: translateY(-5px);
    background: rgba(63, 81, 181, 0.85);
  }
 /* Projects */
#projects {
    background: linear-gradient(165deg, #312e81 0%, #1e1b4b 48%, #3730a3 100%);
    color: #ffffff;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    padding: 60px 20px;
  }
  
  #projects h2 {
    font-size: 4.3rem;
    margin-bottom: 40px;
  }
  
  .projects-row {
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 100%;
  }
  
  .project-card.full-width-card {
    background: rgba(44, 62, 80, 0.85);
    padding: 35px 40px;
    border-radius: 15px;
    width: 100%;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    transition: transform 0.3s, background 0.3s;
    text-align: left;
  }
  
  .project-card h3 {
    font-size: 2.4rem;
    margin-bottom: 15px;
    border-bottom: 2px solid #3f51b5;
    display: inline-block;
  }
  
  .project-card p {
    font-size: 1.7rem;
  }
  
  .project-card:hover {
    transform: translateY(-5px);
    background: rgba(63, 81, 181, 0.85);
  }

 /* Projects */
#projects {
    background: linear-gradient(165deg, #312e81 0%, #1e1b4b 48%, #3730a3 100%);
    color: #ffffff;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    padding: 60px 20px;
  }
  
  #projects h2 {
    font-size: 4.3rem;
    margin-bottom: 40px;
  }
  
  .projects-row {
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 100%;
  }
  
  .project-card.full-width-card {
    background: rgba(44, 62, 80, 0.85);
    padding: 35px 40px;
    border-radius: 15px;
    width: 100%;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    transition: transform 0.3s, background 0.3s;
    text-align: left;
  }
  
  .project-card h3 {
    font-size: 2.4rem;
    margin-bottom: 15px;
    border-bottom: 2px solid #3f51b5;
    display: inline-block;
  }
  
  .project-card p {
    font-size: 1.7rem;
  }
  
  .project-card:hover {
    transform: translateY(-5px);
    background: rgba(63, 81, 181, 0.85);
  }

/* Slide 5: Education & Experience */
#experience {
    background: linear-gradient(135deg, #292524 0%, #1c1917 50%, #44403c 100%);
    color: #ffffff;
    display: flex;
    flex-direction: column;
    justify-content: center;  /* center vertically */
    align-items: center;
    min-height: 100vh;        /* full screen */
    padding: 60px 40px;
    text-align: center;
  }
  
  #experience h2 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 50px;
  }
  
 /* Row layout */
.exp-row {
    display: flex;
    justify-content: center;
    align-items: stretch;
    gap: 40px;
    width: 100%;
    max-width: 1200px;
  }
  
  /* Cards */
  .exp-card {
    flex: 1;                /* equal width cards */
    max-width: 550px;       /* keeps them neat */
    background: rgba(44, 62, 80, 0.85);
    padding: 35px 30px;
    border-radius: 15px;
    text-align: left;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    transition: transform 0.3s, background 0.3s;
  }
  
  
  .exp-card h3 {
    font-size: 2.3rem;
    margin-bottom: 15px;
    border-bottom: 2px solid #3f51b5;
    display: inline-block;
    padding-bottom: 5px;
  }
  
  .exp-card p {
    font-size: 1.5rem;
    margin-bottom: 12px;
  }
  
  /* Hover */
  .exp-card:hover {
    transform: translateY(-6px);
    background: rgba(63, 81, 181, 0.85);
  }
  
  /* Responsive */
  @media(max-width: 900px){
    #experience h2 { font-size: 3rem; }
  
    .exp-card {
      width: 100%; /* stack on mobile */
    }
  
    .exp-card h3 { font-size: 2rem; }
    .exp-card p { font-size: 1.3rem; }
  }
  

  /* Certifications */
#certifications {
    background: linear-gradient(145deg, #1e1b4b 0%, #312e81 42%, #1e293b 100%);
    color: #ffffff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 60px 40px;
    text-align: center;
  }

  #certifications h2 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 50px;
  }

  .cert-row {
    display: flex;
    gap: 30px;
    width: 100%;
    max-width: 1200px;
    justify-content: center;
    flex-wrap: wrap;
  }

  .cert-card {
    background: rgba(44, 62, 80, 0.85);
    padding: 35px 28px;
    border-radius: 15px;
    flex: 1 1 280px;
    max-width: 380px;
    min-width: 260px;
    text-align: left;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    transition: transform 0.3s, background 0.3s;
  }

  .cert-image-link {
    display: block;
    text-decoration: none;
    margin-bottom: 18px;
    border-radius: 10px;
    overflow: hidden;
    transition: opacity 0.2s;
  }

  .cert-image-link:hover {
    opacity: 0.95;
  }

  .cert-image-link:focus-visible {
    outline: 2px solid #3f51b5;
    outline-offset: 3px;
  }

  .cert-image-wrap {
    background: rgba(15, 23, 42, 0.55);
    border-radius: 10px;
    overflow: hidden;
    line-height: 0;
  }

  .cert-image-wrap img {
    display: block;
    width: 100%;
    height: auto;
    max-height: 380px;
    object-fit: contain;
    object-position: center top;
  }

  .cert-card h3 {
    font-size: 2rem;
    margin-bottom: 15px;
    border-bottom: 2px solid #3f51b5;
    display: inline-block;
    padding-bottom: 5px;
  }

  .cert-card p {
    font-size: 1.4rem;
    margin-bottom: 12px;
  }

  .cert-card .cert-note {
    font-size: 1.25rem;
    opacity: 0.92;
    margin-top: 8px;
    margin-bottom: 0;
  }

  .cert-card .cert-note a {
    color: #93c5fd;
    text-decoration: underline;
  }

  .cert-card .cert-note a:hover {
    color: #bfdbfe;
  }

  .cert-card:hover {
    transform: translateY(-6px);
    background: rgba(63, 81, 181, 0.85);
  }

  @media(max-width: 900px){
    #certifications h2 { font-size: 3rem; }

    .cert-card {
      max-width: 100%;
    }

    .cert-card h3 { font-size: 1.8rem; }
    .cert-card p { font-size: 1.3rem; }
  }

 /* Slide 6: Contact */
 #contact {
    background: linear-gradient(110deg, #164e63 50%, #0e7490 50%);
    color: #ffffff;
    display: flex;
    flex-direction: column;
    justify-content: center;  /* center vertically */
    align-items: center;
    min-height: 100vh;        /* full screen */
    padding: 60px 40px;
    text-align: center;
  }
  
  #contact h2 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 50px;
  }
  
  /* Row layout */
.contact-row {
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    gap: 40px;
    width: 100%;
    max-width: 1200px;
  }
  
  /* Cards */
  .contact-card {
    width: 50%; /* each card half of row */
    background: rgba(44, 62, 80, 0.85);
    padding: 35px 30px;
    border-radius: 15px;
    text-align: left;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
    transition: transform 0.3s, background 0.3s;
  }
  
  .contact-card h3 {
    font-size: 2.3rem;
    margin-bottom: 20px;
    border-bottom: 2px solid #3f51b5;
    display: inline-block;
    padding-bottom: 5px;
  }
  
  .contact-card p {
    font-size: 1.5rem;
    margin-bottom: 15px;
  }
  
  .contact-card a {
    color: #ffffff;
    text-decoration: none;
  }
  
  .contact-card a:hover {
    text-decoration: underline;
  }
  
  /* Form */
  .contact-card form {
    display: flex;
    flex-direction: column;
    gap: 15px;
  }
  
  .contact-card input,
  .contact-card textarea {
    padding: 15px;
    border-radius: 10px;
    border: none;
    font-size: 1.2rem;
  }
  
  /* Button */
  .btn {
    padding: 15px 35px;
    font-size: 1.3rem;
    border-radius: 10px;
    font-weight: 700;
    background: #2c3e50;
    color: #fff;
    border: none;
    cursor: pointer;
  }
  
  .btn:hover {
    background: #3f51b5;
  }
  
  /* Hire Me */
  .hire-btn {
    margin-top: 20px;
    display: inline-block;
  }
  
  /* Hover effect */
  .contact-card:hover {
    transform: translateY(-6px);
    background: rgba(63, 81, 181, 0.85);
  }
  
  /* Responsive */
  @media(max-width: 900px){
    #contact h2 { font-size: 3rem; }
  
    .contact-card {
      width: 100%; /* stack */
    }
  
    .contact-card h3 { font-size: 2rem; }
    .contact-card p { font-size: 1.3rem; }
  
  
}