/* ===============================================
   LAYOUT SPECIFIC STYLES
   =============================================== */

/* Header Layout */
.header {
    background-color: var(--white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: var(--z-index-sticky);
    transition: all var(--transition-base);
  }
  
  .header--scrolled {
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
  }
  
  /* Navigation Layout */
  .nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-6) 0;
    position: relative;
  }
  
  .nav__logo {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-black);
    color: var(--primary);
    text-decoration: none;
  }

  .nav__logo a {
    /* Keep existing styles and add the underline effect */
    position: relative;
    padding: var(--spacing-2) 0;
    transition: all var(--transition-base);
  }
  
  .nav__logo a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: width var(--transition-base);
  }
  
  .nav__logo a:hover::after {
    width: 100%;
  }
  
  .nav__logo a:hover {
    color: var(--primary);
  }
  
  .nav__links {
    display: flex;
    gap: var(--spacing-8);
    align-items: center;
  }
  
  .nav__link {
    color: var(--dark);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: all var(--transition-base);
    position: relative;
    padding: var(--spacing-2) 0;
  }
  
  .nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: width var(--transition-base);
  }
  
  .nav__link:hover {
    color: var(--primary);
  }
  
  .nav__link:hover::after,
  .nav__link--active::after {
    width: 100%;
  }
  
  .nav__toggle {
    display: none;
    font-size: var(--font-size-2xl);
    cursor: pointer;
    color: var(--dark);
    transition: color var(--transition-base);
  }
  
  .nav__toggle:hover {
    color: var(--primary);
  }
  
  .nav__mobile {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--white);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-6);
    flex-direction: column;
    gap: var(--spacing-4);
    border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
  }
  
  .nav__mobile.active {
    display: flex;
    animation: slideDown 0.3s ease-out;
  }
  
  .nav__mobile-link {
    color: var(--dark);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    padding: var(--spacing-3) 0;
    border-bottom: 1px solid var(--gray-lighter);
    transition: color var(--transition-base);
  }
  
  .nav__mobile-link:hover {
    color: var(--primary);
  }
  
  .nav__mobile-link:last-child {
    border-bottom: none;
  }
  
  @keyframes slideDown {
    from {
      opacity: 0;
      transform: translateY(-10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  /* Hero Section Layout */
  .hero {
    padding: var(--spacing-20) 0;
    min-height: 80vh;
    display: flex;
    align-items: center;
  }
  
  .hero__content {
    max-width: 100%;
  }
  
  .hero__title {
    font-size: var(--font-size-6xl);
    font-weight: var(--font-weight-extrabold);
    margin-bottom: var(--spacing-6);
    line-height: var(--line-height-tight);
    color: var(--dark);
  }
  
  .hero__name {
    color: var(--primary);
    display: inline-block;
  }
  
  .hero__description {
    font-size: var(--font-size-lg);
    color: var(--gray);
    margin-bottom: var(--spacing-8);
    line-height: var(--line-height-relaxed);
    max-width: 600px;
  }
  
  .hero__buttons {
    display: flex;
    gap: var(--spacing-4);
    flex-wrap: wrap;
  }
  
  /* About Section Layout */
  .about {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-12);
    align-items: start;
  }
  
  .about__content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
  }
  
  .about__text {
    color: var(--gray-dark);
    line-height: var(--line-height-relaxed);
    font-size: var(--font-size-base);
  }
  
  .about__text:first-child {
    font-size: var(--font-size-lg);
    color: var(--dark);
  }
  
  /* Skills Grid Layout */
  .skills {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-6);
  }
  
  /* Timeline Layout */
  .timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-8) 0;
  }
  
  .timeline::before {
    content: '';
    position: absolute;
    width: 2px;
    background-color: var(--primary);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1px;
  }
  
  .timeline__item {
    padding: var(--spacing-4) var(--spacing-10);
    position: relative;
    width: 50%;
    box-sizing: border-box;
  }
  
  .timeline__item:nth-child(odd) {
    left: 0;
    text-align: right;
  }
  
  .timeline__item:nth-child(even) {
    left: 50%;
    text-align: left;
  }
  
  .timeline__content {
    padding: var(--spacing-6);
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    position: relative;
  }
  
  .timeline__content:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
  }
  
  .timeline__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-2);
    color: var(--dark);
  }
  
  .timeline__date {
    color: var(--primary);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-2);
    display: block;
    font-size: var(--font-size-sm);
  }
  
  .timeline__company {
    color: var(--gray-dark);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-3);
    font-size: var(--font-size-base);
  }
  
  .timeline__description {
    color: var(--gray);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
  }
  
  .timeline__item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: var(--white);
    border: 4px solid var(--primary);
    border-radius: 50%;
    top: 20px;
    z-index: 1;
    transition: all var(--transition-base);
  }
  
  .timeline__item:nth-child(odd)::after {
    right: -10px;
  }
  
  .timeline__item:nth-child(even)::after {
    left: -10px;
  }
  
  .timeline__item:hover::after {
    background-color: var(--primary);
    transform: scale(1.2);
  }
  
  /* Contact Section Layout */
  .contact {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    position: relative;
    overflow: hidden;
  }
  
  .contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
  }
  
  .contact .container {
    position: relative;
    z-index: 1;
  }
  
  .contact__form-container {
    max-width: 600px;
    margin: 0 auto;
  }
  
  .contact__form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
  }
  
  /* Footer Layout */
  .footer {
    background-color: var(--dark);
    color: var(--white);
    text-align: center;
    padding: var(--spacing-12) 0 var(--spacing-8);
  }
  
  .footer__copyright {
    font-size: var(--font-size-sm);
    color: var(--gray-light);
    margin: 0;
  }
  
  /* Grid System */
  .grid {
    display: grid;
    gap: var(--grid-gap);
  }
  
  .grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .grid--auto-fit {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
  
  .grid--auto-fill {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  }
  
  /* Flex Utilities */
  .flex {
    display: flex;
  }
  
  .flex-col {
    flex-direction: column;
  }
  
  .flex-wrap {
    flex-wrap: wrap;
  }
  
  .items-center {
    align-items: center;
  }
  
  .items-start {
    align-items: flex-start;
  }
  
  .items-end {
    align-items: flex-end;
  }
  
  .justify-center {
    justify-content: center;
  }
  
  .justify-between {
    justify-content: space-between;
  }
  
  .justify-around {
    justify-content: space-around;
  }
  
  .justify-start {
    justify-content: flex-start;
  }
  
  .justify-end {
    justify-content: flex-end;
  }
  
  /* Gap Utilities */
  .gap-1 { gap: var(--spacing-1); }
  .gap-2 { gap: var(--spacing-2); }
  .gap-3 { gap: var(--spacing-3); }
  .gap-4 { gap: var(--spacing-4); }
  .gap-5 { gap: var(--spacing-5); }
  .gap-6 { gap: var(--spacing-6); }
  .gap-8 { gap: var(--spacing-8); }
  .gap-10 { gap: var(--spacing-10); }
  .gap-12 { gap: var(--spacing-12); }