:root {
    --iit-primary: #28a745;
    --iit-secondary: #218838;
    --iit-dark: #1e7e34;
} 

.trust-badge {
    max-width: 100%;
    margin: 10px;
}
.hero-section {
    background: linear-gradient(rgba(26, 35, 126, 0.9), rgba(13, 71, 161, 0.9)), url('https://www.iit.org.pk/wp-content/uploads/2023/01/iit-building.jpg');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 100px 0;
    margin-bottom: 50px;
   
}

/* Responsive Design */
/* Mobile First Approach */
.donation-container {
    max-width: 100%;
    margin: 1rem;
    padding: 1rem;
}

.hero-section {
    padding: 60px 0;
}

.hero-section h1 {
    font-size: 2rem;
}

.impact-card {
    margin-bottom: 1rem;
}

.donation-amount {
    padding: 0.75rem;
    font-size: 0.9rem;
}

.header .navbar-brand img {
    height: 30px;
}

.header .nav-link {
    padding: 0.5rem;
    font-size: 0.9rem;
}

.header .donate-btn {
    padding: 0.4rem 1rem;
    font-size: 0.9rem;
}

/* Tablet Styles */
@media (min-width: 768px) {
    .donation-container {
        max-width: 720px;
        margin: 2rem auto;
        padding: 2rem;
    }

    .hero-section {
        padding: 80px 0;
    }

    .hero-section h1 {
        font-size: 2.5rem;
    }

    .impact-card {
        margin-bottom: 1.5rem;
    }

    .donation-amount {
        padding: 1rem;
        font-size: 1rem;
    }

    .header .navbar-brand img {
        height: 35px;
    }

    .header .nav-link {
        padding: 0.5rem 0.75rem;
        font-size: 1rem;
    }

    .header .donate-btn {
        padding: 0.5rem 1.25rem;
        font-size: 1rem;
    }

    /* Adjust grid for tablet */
    .row.g-3 {
        --bs-gutter-x: 1.5rem;
    }
}

/* Desktop Styles */
@media (min-width: 992px) {
    .donation-container {
        max-width: 960px;
    }

    .hero-section {
        padding: 100px 0;
    }

    .hero-section h1 {
        font-size: 3rem;
    }

    .header .navbar-brand img {
        height: 40px;
    }

    .header .nav-link {
        padding: 0.5rem 1rem;
    }

    .header .donate-btn {
        padding: 0.5rem 1.5rem;
    }

    /* Adjust grid for desktop */
    .row.g-3 {
        --bs-gutter-x: 2rem;
    }
}

/* Large Desktop Styles */
@media (min-width: 1200px) {
    .donation-container {
        max-width: 1140px;
    }
}

/* Payment Method Tabs Responsive */
@media (max-width: 767px) {
    .nav-tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        -ms-overflow-style: none;
        scrollbar-width: none;
    }

    .nav-tabs::-webkit-scrollbar {
        display: none;
    }

    .nav-tabs .nav-link {
        white-space: nowrap;
        font-size: 0.9rem;
        padding: 0.5rem 0.75rem;
    }
}

/* Form Fields Responsive */
@media (max-width: 575px) {
    .form-label {
        font-size: 0.9rem;
    }

    .form-control {
        font-size: 0.9rem;
        padding: 0.5rem;
    }

    .input-group-text {
        font-size: 0.9rem;
        padding: 0.5rem;
    }

    .alert {
        font-size: 0.9rem;
        padding: 0.75rem;
    }
}

/* Card Layout Responsive */
@media (max-width: 767px) {
    .impact-card .card-body {
        padding: 1rem;
    }

    .impact-card .display-4 {
        font-size: 2rem;
    }

    .impact-card .card-text {
        font-size: 0.9rem;
    }
}

/* Trust Badges Responsive */
@media (max-width: 767px) {
    .trust-badge {
        max-width: 100px;
        margin: 5px;
    }

    .card.m-2 {
        width: 150px !important;
    }
}

/* Custom Amount Input Responsive */
@media (max-width: 575px) {
    .custom-amount {
        font-size: 0.9rem;
        padding: 0.4rem;
    }
}

/* Additional Responsive Utilities */
.text-responsive {
    font-size: clamp(0.875rem, 2vw, 1rem);
}

.heading-responsive {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
}

.padding-responsive {
    padding: clamp(1rem, 3vw, 2rem);
}

/* Print Styles */
@media print {
    .header,
    .donate-btn,
    .nav-tabs {
        display: none !important;
    }

    .donation-container {
        max-width: 100%;
        margin: 0;
        padding: 0;
    }

    .card {
        border: 1px solid #ddd;
        break-inside: avoid;
    }
}



  
    :root {
      --primary: rgba(255, 255, 255, 0.95);
      --hover-green: #0ce70c;
    }

    body {
      margin: 0;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background-color:  rgba(255, 255, 255, 0.95);;
    }

    .nav-container {
      background-color: var(--primary);
      padding: 0.5rem 1rem;
      position: fixed;
      width: 100%;
      z-index: 100;
    }

    .nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      max-width: 1200px;
      margin: auto;
    }

    .nav-logo img {
      height: 60px;
      width: 60px;
      border-radius: 50%;
      object-fit: cover;
    }

    .nav-menu {
      list-style: none;
      display: flex;
      gap: 1rem;
      margin: 0;
      padding: 0;
    }

    .nav-item {
      display: flex;
    }

    .nav-link {
      color: rgb(24, 23, 23);
      text-decoration: none;
      font-size: 1rem;
      padding: 0.75rem 1rem;
      transition: color 0.3s ease;
    }

    .nav-link:hover {
      color: var(--hover-green) !important;
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      color: rgb(48, 45, 45);
      font-size: 1.5rem;
      cursor: pointer;
    }

    @media (max-width: 992px) {
      .nav-menu {
        flex-direction: column;
        width: 100%;
        display: none;
        background-color: var(--primary);
        padding: 0.5rem 0;
      }

      .nav-menu.active {
        display: flex;
      }

      .mobile-menu-btn {
        display: block;
      }

      .nav {
        align-items: flex-start;
      }

      .nav-item {
        width: 100%;
      }

      .nav-link {
        width: 100%;
        display: block;
        padding: 0.5rem 1rem;
        font-size: 0.95rem;
      }
    }

    .gallery {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
      margin: 20px auto;
      max-width: 1200px;
    }

    .gallery-item {
      flex: 1 1 calc(33.333% - 40px);
      max-width: calc(33.333% - 40px);
      transition: transform 0.3s ease;
    }

    .gallery-item:hover {
      transform: scale(1.05);
    }

    .gallery-item img {
      width: 100%;
      height: auto;
      display: block;
      border-radius: 8px;
    }

    @media (max-width: 992px) {
      .gallery-item {
        flex: 1 1 calc(50% - 40px);
        max-width: calc(50% - 40px);
      }
    }

    @media (max-width: 576px) {
      .gallery-item {
        flex: 1 1 100%;
        max-width: 100%;
      }
    }

    .gallery-heading {
      text-align: center;
      padding: 6rem 2rem 2rem;
      color: aliceblue;
    }



    @media (max-width: 992px) {
    .nav-menu {
      margin-top: 20px;
        flex-direction: column;
        width: 100%;
        display: none;
        background-color: var(--primary);
        padding: 0;  /* Changed from 0.5rem 0 */
        position: absolute;
        top: 50px;   /* Adjust based on your header height */
        left: 0;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-item {
        width: 100%;
        margin: 0;   /* Ensure no margin */
    }

    .nav-link {
        width: 100%;
        display: block;
        padding: 0.5rem 1rem;  /* Reduced from original */
        font-size: 0.95rem;
        border-bottom: 1px solid rgba(0,0,0,0.05);  /* Optional separator */
    }

    .mobile-menu-btn {
        display: block;
    }
}