@import url(https://fonts.googleapis.com/css?family=Montserrat:400,700&display=swap);

:root {
      --primary: #22223b;
      --secondary: #4a4e69;
      --accent: #9a8c98;
      --light: #f2e9e4;
      --highlight: #c9ada7;
      --transition: 0.4s cubic-bezier(.77,0,.18,1);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: 'Montserrat', sans-serif;
      background: linear-gradient(135deg, var(--primary) 60%, var(--secondary) 100%);
      color: var(--light);
      min-height: 100vh;
      scroll-behavior: smooth;
    }

     nav {
      box-shadow: 0 2px 12px rgba(0,0,0,0.15);
      transition: background var(--transition);
      padding: 0.7rem 0;
      background: rgba(34,34,59,0.95);
      position: sticky;
      top: 0;
      z-index: 100;
    }
    nav ul {
      list-style: none;
      display: flex;
      justify-content: center;
      gap: 2rem;
      margin: 0;
      padding: 0;
      transition: max-height .3s;
    }
    nav a {
  color: var(--light);
      text-decoration: none;
      font-weight: 700;
      font-size: 1.1rem;
      letter-spacing: 1px;
      position: relative;
      transition: color var(--transition);
    }

    nav a::after {
      content: '';
      display: block;
      width: 0;
      height: 2px;
      background: var(--highlight);
      transition: width var(--transition);
      position: absolute;
      left: 0; bottom: -4px;
    }


    nav a:hover, nav a.active {
      color: var(--highlight);
    }
    nav a:hover::after, nav a.active::after {
      width: 100%;
    }

    .nav-toggle {
      display: none;
      background: none;
      border: none;
      color: var(--light);
      font-size: 2rem;
      position: absolute;
      right: 1.2rem;
      top: 0.7rem;
      cursor: pointer;
      z-index: 101;
    }
    @media (max-width: 700px) {
      nav {
        padding: 0.7rem 0 0.7rem 0;
      }
      .nav-toggle {
        display: block;
      }
      nav ul {
        flex-direction: column;
        align-items: flex-start;
        background: var(--primary);
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        max-height: 0;
        overflow: hidden;
        gap: 0;
        box-shadow: 0 8px 24px rgba(0,0,0,0.13);
      }
      nav ul.open {
        max-height: 400px;
        padding-bottom: 0.7rem;
      }
      nav ul li {
        width: 100%;
      }
      nav ul li a {
        display: block;
        width: 100%;
        padding: 1rem 1.5rem;
        font-size: 1.1rem;
        border-radius: 0;
      }
    }


    section {
      max-width: 1100px;
      margin: 0 auto;
      padding: 5rem 2rem;
      opacity: 0;
      transform: translateY(40px);
      transition: opacity 1s var(--transition), transform 1s var(--transition);
    }
    section.visible {
      opacity: 1;
      transform: translateY(0);
    }
    .home {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      min-height: 90vh;
      text-align: center;
      background: linear-gradient(120deg, var(--secondary) 60%, var(--primary) 100%);
      border-radius: 0 0 2rem 2rem;
      box-shadow: 0 8px 32px rgba(0,0,0,0.25);
      animation: fadeIn 1.5s cubic-bezier(.77,0,.18,1);
    }
    @keyframes fadeIn {
      from { opacity: 0; transform: scale(0.98);}
      to { opacity: 1; transform: scale(1);}
    }
    .home h1 {
      font-size: 3rem;
      font-weight: 700;
      color: var(--light);
      margin-bottom: 1rem;
      letter-spacing: 2px;
      text-shadow: 0 2px 8px rgba(0,0,0,0.2);
    }
    .home h2 {
      font-size: 1.5rem;
      color: var(--highlight);
      margin-bottom: 2rem;
      font-weight: 400;
      letter-spacing: 1px;
    }
    .home .cta {
      margin-top: 2rem;
      display: flex;
      gap: 1.5rem;
      justify-content: center;
    }
    @media (max-width:700px){
      .home .cta{
        display:flex;
        flex-wrap: wrap;
      }
    }
    .btn {
      background: var(--highlight);
      color: var(--primary);
      padding: 0.8rem 2rem;
      border: none;
      border-radius: 2rem;
      font-size: 1.1rem;
      font-weight: 700;
      cursor: pointer;
      box-shadow: 0 2px 8px rgba(0,0,0,0.15);
      transition: background var(--transition), color var(--transition), transform var(--transition);
    }
    .btn:hover {
      background: var(--accent);
      color: var(--light);
      transform: translateY(-3px) scale(1.04);
    }
    .about {
      display: flex;
      flex-wrap: wrap;
      gap: 2rem;
      align-items: center;
      justify-content: center;
    }
    .about-img {
      flex: 1 1 220px;
      max-width: 220px;
      border-radius: 50%;
      overflow: hidden;
      box-shadow: 0 4px 24px rgba(0,0,0,0.18);
      border: 4px solid var(--highlight);
      animation: float 3s ease-in-out infinite alternate;
    }
    @keyframes float {
      from { transform: translateY(0);}
      to { transform: translateY(-18px);}
    }
    .about-content {
      flex: 2 1 350px;
      color: var(--light);
    }
    .about-content h3 {
      font-size: 2rem;
      color: var(--highlight);
      margin-bottom: 1rem;
    }
    .about-content p {
      font-size: 1.1rem;
      line-height: 1.7;
      color: var(--light);
      margin-bottom: 1rem;
    }
    .skills {
      display: flex;
      flex-wrap: wrap;
      gap: 2rem;
      justify-content: center;
    }
    .skill-card {
      background: rgba(74,78,105,0.85);
      border-radius: 1.2rem;
      padding: 2rem 1.5rem;
      min-width: 180px;
      max-width: 220px;
      box-shadow: 0 2px 12px rgba(0,0,0,0.12);
      text-align: center;
      transition: transform var(--transition), box-shadow var(--transition);
      position: relative;
      overflow: hidden;
    }
    .skill-card:hover {
      transform: translateY(-8px) scale(1.04);
      box-shadow: 0 8px 32px rgba(0,0,0,0.18);
    }
    .skill-card h4 {
      color: var(--highlight);
      margin-bottom: 1rem;
      font-size: 1.2rem;
      font-weight: 700;
    }
    .progress-bar {
      background: var(--light);
      border-radius: 1rem;
      height: 10px;
      margin-bottom: 0.5rem;
      overflow: hidden;
      width: 100%;
    }
    .progress {
      background: linear-gradient(90deg, var(--highlight), var(--accent));
      height: 100%;
      width: 0;
      border-radius: 1rem;
      transition: width 1.2s cubic-bezier(.77,0,.18,1);
    }
    .projects {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 2rem;
    }
    .project-card {
      background: rgba(74,78,105,0.85);
      border-radius: 1.2rem;
      box-shadow: 0 2px 12px rgba(0,0,0,0.12);
      overflow: hidden;
      transition: transform var(--transition), box-shadow var(--transition);
      display: flex;
      flex-direction: column;
    }
    .project-card:hover {
      transform: translateY(-8px) scale(1.03);
      box-shadow: 0 8px 32px rgba(0,0,0,0.18);
    }
    .project-img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      background: var(--accent);
    }
    .project-content {
      padding: 1.2rem;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .project-content h4 {
      color: var(--highlight);
      margin-bottom: 0.5rem;
      font-size: 1.15rem;
    }
    .project-content p {
      font-size: 1rem;
      color: var(--light);
      margin-bottom: 1rem;
    }
    .project-links {
      margin-top: auto;
      display: flex;
      gap: 1rem;
    }
    .project-links a {
      color: var(--highlight);
      text-decoration: underline;
      font-size: 0.98rem;
      transition: color var(--transition);
    }
    .project-links a:hover {
      color: var(--accent);
    }
    .certificates {
      display: flex;
      flex-wrap: wrap;
      gap: 2rem;
      justify-content: center;
    }
    .certificate-card {
      background: rgba(74,78,105,0.85);
      border-radius: 1.2rem;
      padding: 1.5rem 1.2rem;
      min-width: 220px;
      max-width: 320px;
      box-shadow: 0 2px 12px rgba(0,0,0,0.12);
      text-align: center;
      transition: transform var(--transition), box-shadow var(--transition);
      position: relative;
      overflow: hidden;
    }
    .certificate-card:hover {
      transform: translateY(-8px) scale(1.04);
      box-shadow: 0 8px 32px rgba(0,0,0,0.18);
    }
    .certificate-card h4 {
      color: var(--highlight);
      margin-bottom: 0.5rem;
      font-size: 1.1rem;
    }
    .certificate-card p {
      font-size: 0.98rem;
      color: var(--light);
      margin-bottom: 0.5rem;
    }
    .contact-form {
      background: rgba(74,78,105,0.85);
      border-radius: 1.2rem;
      padding: 2rem;
      max-width: 500px;
      margin: 0 auto;
      box-shadow: 0 2px 12px rgba(0,0,0,0.12);
      display: flex;
      flex-direction: column;
      gap: 1.2rem;
    }
    .contact-form input, .contact-form textarea {
      padding: 0.8rem 1rem;
      border-radius: 0.8rem;
      border: none;
      font-size: 1rem;
      background: var(--light);
      color: var(--primary);
      resize: none;
      transition: box-shadow var(--transition);
    }
    .contact-form input:focus, .contact-form textarea:focus {
      outline: none;
      box-shadow: 0 0 0 2px var(--highlight);
    }
    .contact-form button {
      align-self: flex-end;
    }
    .form-message {
      margin-top: 0.5rem;
      font-size: 1rem;
      color: var(--highlight);
      min-height: 1.2em;
    }
    @media (max-width: 900px) {
      .about { flex-direction: column; }
      .about-img { margin-bottom: 2rem; }
    }
    @media (max-width: 600px) {
      nav ul { gap: 1rem; }
      section { padding: 3rem 1rem; }
      .home h1 { font-size: 2.1rem; }
      .home h2 { font-size: 1.1rem; }
    }