/* ================= GLOBAL BACKGROUND ================= */
body {
    background: #00091a;           /* deep blue */
    color: #dfe7ff;
    margin: 0;
    padding: 0;
    font-family: "Poppins", sans-serif;
  }
  
  /* Main container */
  section:not(#aps-hero) .container,
  section:not(#aps-hero) {
      max-width: 1100px;
      margin: 0 auto;
      padding: 0 25px;
  }
  
/* ================= NAVBAR (APS THEME) ================= */
.navbar {
    width: 100%;
    padding: 12px 0;
    position: absolute;
    top: 0;
    z-index: 1000;
  
    background: transparent;
    border-bottom: 1px solid rgba(140, 85, 255, 0.25); /* 🟣 APS Purple Border */
  }
  
  .nav-container {
    max-width: var(--max-width);
    margin: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 25px;
  }
  
  /* LOGO */
  .logo-img {
    width: 55px;
    filter: drop-shadow(0 0 6px rgba(150, 110, 255, 0.45)); /* APS Purple Glow */
  }
  
  .logo-text {
    margin-left: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    color: #b892ff; /* Soft Purple */
  }
  
  .logo-area {
    display: flex;
    align-items: center;
  }
  
  /* DESKTOP MENU */
  .nav-links {
    list-style: none;
    display: flex;
    gap: 22px;
  }
  
  .nav-links li a {
    color: #e9dbff; /* Light lavender white */
    text-decoration: none;
    font-size: 0.85rem;
    transition: 0.25s ease;
  }
  
  .nav-links li a:hover {
    color: #b892ff;
    text-shadow: 0 0 8px rgba(160, 120, 255, 0.65);
  }
  
  /* PORTAL BUTTON (DESKTOP ONLY) */
  .portal-btn {
    background: linear-gradient(135deg, #6f4aff, #9d7bff); /* APS Blue-Purple Gradient */
    padding: 10px 18px;
    color: white;
    border-radius: 50px;
    text-decoration: none;
    transition: 0.3s ease;
    box-shadow: 0 0 12px rgba(150, 110, 255, 0.45);
  }
  
  .portal-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 22px rgba(175, 140, 255, 0.75);
  }
  
  /* BURGER BUTTON */
  .menu-toggle {
    display: none;
    font-size: 32px;
    background: none;
    border: none;
    color: #e9dbff; /* light lavender */
    cursor: pointer;
    z-index: 2000;
  }
  
  /* ================= MOBILE MENU ================= */
  @media (max-width: 900px) {
  
    .menu-toggle {
        display: block;
    }
  
    .desktop-only {
        display: none;
    }
  
    .nav-links {
        position: absolute;
        top: 75px;
        right: 20px;
  
        width: 240px;
        padding: 22px;
  
        display: none;
        flex-direction: column;
        gap: 16px;
  
        background: rgba(30, 0, 60, 0.65); /* APS purple-tinted glass */
        backdrop-filter: blur(14px);
  
        border: 1px solid rgba(160, 120, 255, 0.25);
        border-radius: 14px;
  
        box-shadow:
            0 8px 25px rgba(0, 0, 0, 0.35),
            0 0 25px rgba(150, 110, 255, 0.25);
  
        animation: fadeSlide 0.25s ease forwards;
        transform-origin: top right;
    }
  
    .nav-links.active {
        display: flex;
    }
  
    .nav-links li a {
        font-size: 1rem;
        color: #f3e8ff;
    }
  }
  
  /* Animation */
  @keyframes fadeSlide {
    from {
        opacity: 0;
        transform: translateY(-12px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
  }
  
  /* ---------- DESKTOP DROPDOWN ---------- */
  .dropdown {
    position: relative;
  }
  
  .dropdown-link {
    cursor: pointer;
  }
  
  .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
  
    background: rgba(50, 0, 80, 0.95); /* Deep APS purple glass */
    backdrop-filter: blur(12px);
  
    width: 250px;
    padding: 10px 0;
  
    list-style: none;
    border: 1px solid rgba(160, 120, 255, 0.3);
    border-radius: 10px;
  
    box-shadow:
        0 10px 25px rgba(0, 0, 0, 0.4),
        0 0 20px rgba(160, 120, 255, 0.35);
  
    display: none;
    z-index: 2000;
  }
  
  .dropdown-menu li a {
    display: block;
    padding: 10px 18px;
    color: #e9dbff;
    text-decoration: none;
    font-size: 0.88rem;
    transition: 0.25s;
  }
  
  .dropdown-menu li a:hover {
    color: #c4a8ff;
    background: rgba(160, 120, 255, 0.12);
  }
  
  /* SHOW DROPDOWN ON HOVER */
  .dropdown:hover .dropdown-menu {
    display: block !important;
  }
  
  /* ---------- MOBILE DROPDOWN ---------- */
  @media (max-width: 900px) {
  
    .dropdown-menu {
        position: static;
        width: 100%;
        background: none;
        border: none;
        box-shadow: none;
        padding-left: 15px;
        display: none;
    }
  
    .dropdown.open .dropdown-menu {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
  }  

  /* ===================== HERO ===================== */
  #aps-hero {
    position: relative;
    height: 90vh;
    background: #00091a;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  #apsWave {
    position:absolute;
    inset:0;
    width:100%;
    height:100%;

  }
  
  .aps-hero-content {
    position:relative;
    z-index:10;
    text-align:center;
    max-width:900px;
  }
  
  .aps-title {
    font-size: 2.6rem;
    font-weight:700;
    color:white;
  }
  .aps-title span {
    color:#b38bff;
  }
  
  .aps-subtitle {
    color:#bcd2ff;
    margin-top:10px;
    font-size:1.1rem;
  }
  
  .visit-btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 50px;
    background: linear-gradient(135deg, #6f4aff, #9d7bff);
  
    color: #ffffff;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-decoration: none;
    box-shadow: 0 0 18px rgba(150, 110, 255, 0.45);
  
    transition: 0.3s ease;
  }
  
  /* HOVER EFFECT */
  .visit-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 0 28px rgba(180, 140, 255, 0.75);
  }
  
  
  
  /* ===================== ABOUT ===================== */
  #aps-about {
    padding:120px 0 80px;
  }
  
  .section-title {
    font-size:2.3rem;
    color:#b38bff;
  }
  
  .section-subtitle {
    font-size:1.15rem;
    color:#a7c0ff;
    max-width:850px;
    line-height:1.7;
    text-align: justify;
  }
  
  
/* ===================== MISSION / VISION (APS THEME) ===================== */
#aps-mv {
    padding: 70px 20px;
    display: flex;
    justify-content: center;
  }
  
  #aps-mv .container {
    width: 100%;
    max-width: 1200px;
  }
  
  /* Section title */
  .mv-title {
    font-size: 2rem;
    color: #b38bff; /* APS Purple */
    margin-bottom: 40px;
  }
  
  /* Layout rows */
  .mv-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    margin-bottom: 70px;
  }
  
  /* Reverse second row */
  .mv-row.reverse {
    flex-direction: row-reverse;
  }
  
  /* Mission / Vision Card */
  .mv-card {
    flex: 1;
    background: #101830; /* APS deep navy-blue */
    padding: 35px;
    border-radius: 16px;
  
    border: 1px solid rgba(160, 120, 255, 0.35); /* APS purple border */
    box-shadow: 0 0 18px rgba(160, 120, 255, 0.15); /* APS glow */
  
    transition: 0.3s;
    text-align: justify;
  }
  
  .mv-card h3 {
    font-size: 1.5rem;
    color: #b38bff; /* APS Purple */
    margin-bottom: 12px;
  }
  
  .mv-card p {
    color: #d7c9ff; /* Soft lavender text */
    line-height: 1.7;
  }
  
  /* Hover effect */
  .mv-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 0 28px rgba(160, 120, 255, 0.45); /* Stronger APS glow */
  }
  
  /* Image Wrapper */
  .mv-img {
    flex: 1;
    border-radius: 16px;
    overflow: hidden;
  }
  
  .mv-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 16px;
    transition: 0.3s ease;
  }
  
  .mv-img:hover img {
    transform: scale(1.05);
  }
/* ===================== RESPONSIVE (APS THEME) ===================== */
@media (max-width: 900px) {
  .mv-row,
  .mv-row.reverse {
    flex-direction: column;
    text-align: center;
  }

  .mv-img,
  .mv-card {
    width: 100%;
  }

  .mv-card {
    text-align: center;
    padding: 28px;
  }

  .mv-card h3 {
    text-align: center;
    color: #b38bff; /* APS Purple */
  }

  .mv-card p {
    text-align: center;
  }
}

@media (max-width: 550px) {

  .mv-title {
    text-align: center;
    font-size: 1.7rem;
    color: #b38bff; /* APS Purple */
  }

  .mv-card {
    padding: 24px;
  }

  .mv-img img {
    border-radius: 14px;
  }
}

  /* ===================== EVENTS ===================== */
  #aps-events {
    padding:100px 50px;
  }
  
  .event-section-title {
    font-size:2rem;
    color:#b38bff;
    margin-bottom:40px;
  }
  
  .events-grid {
    display:grid;
    grid-template-columns:repeat(auto-fit, minmax(280px, 1fr));
    gap:25px;
  }
  
  .event-card {
    background:rgba(255,255,255,0.05);
    padding:20px;
    border-radius:16px;
    border:1px solid rgba(140,85,255,0.35);
    transition:0.3s;
  }
  .event-card:hover {
    transform:translateY(-6px);
    box-shadow:0 0 20px rgba(140,85,255,0.5);
  }
  
  .event-img {
    width:100%;
    height:180px;
    border-radius:12px;
    object-fit:cover;
  }
  /* ================= Event Card Button (APS Theme) ================= */
.event-btn {
    display: inline-block;
    margin-top: 14px;
    padding: 10px 18px;
  
    font-size: 0.9rem;
    color: #c9b2ff; /* lavender purple */
    text-decoration: none;
  
    border: 1px solid rgba(160, 120, 255, 0.5);
    border-radius: 12px;
  
    transition: 0.3s ease;
  }
  
  .event-btn:hover {
    background: rgba(160, 120, 255, 0.15);
    box-shadow: 0 0 12px rgba(160, 120, 255, 0.5);
    transform: translateY(-3px);
    color: #e4d4ff; /* lighter lavender */
  }  
  
/* ===================== COMMITTEE (APS THEME) ===================== */
#aps-committee {
    padding: 70px 20px;
  }
  
  /* Section Title */
  #aps-committee .section-title {
    text-align: center;
    color: #b38bff; /* APS Purple */
    margin-bottom: 40px;
    font-size: 2rem;
  }
  
  /* Advisor / Senior Members */
  .teachers {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 30px;
    flex-wrap: wrap;
    margin-bottom: 30px;
  }
  
  .teachers .committee-card {
    width: 100%;
    max-width: 260px;   /* slightly bigger for advisor */
    text-align: center;
  }
  
  /* Main Committee Grid */
  .committee-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: auto;
    text-align: center;
  }
  
  /* Committee Card */
  .committee-card {
    background: rgba(255, 255, 255, 0.04); /* APS glass */
    padding: 22px;
    border-radius: 16px;
  
    border: 1px solid rgba(160, 120, 255, 0.35); /* APS border */
    transition: 0.3s ease;
  }
  
  /* Hover Effect */
  .committee-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 0 22px rgba(160, 120, 255, 0.45); /* APS glow */
  }
  
  /* Profile Image */
  .committee-img {
    width: 110px;
    height: 110px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 10px;
  
    border: 2px solid #b38bff; /* APS Purple Ring */
  }
  
  /* Role (e.g., Chair, Advisor) */
  .committee-role {
    color: #c6aaff; /* Light lavender-purple */
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 6px;
  }
  
  /* Name (e.g., Dr. Md. Azad Hossain) */
  .committee-name {
    color: #e8ddff; /* soft lavender white */
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 6px;
  }
  
  /* Paragraph under Advisor card */
  p.name {
    color: #d7caff; /* Light lavender */
    font-size: 0.9rem;
    line-height: 1.45;
    margin-top: 4px;
  }  
  
/* ================= FOOTER (APS THEME) ================= */
footer {
    background: rgba(0, 0, 0, 0.18);        /* transparent glass */
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
  
    padding: 28px 25px;
    margin-top: 70px;
  
    /* APS purple border */
    border-top: 1px solid rgba(160, 120, 255, 0.30);
  }
  
  /* Footer container */
  .footer-inner {
    max-width: var(--max-width);
    margin: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
  
    color: #e6dbff;       /* soft lavender text */
    font-size: 0.95rem;
  }
  
  /* Footer Links */
  .footer-links a {
    color: #c3a2ff;       /* soft purple */
    margin-left: 16px;
    text-decoration: none;
    transition: 0.3s ease;
    font-weight: 500;
  }
  
  .footer-links a:hover {
    color: #d9c3ff;       /* lighter lavender glow */
    text-shadow: 0 0 10px rgba(190, 150, 255, 0.7);
    transform: translateY(-2px);
  }
  
/* ===================== PROFESSIONAL FOOTER - APS THEME ===================== */
#contact {
    background: linear-gradient(135deg, #00091a 0%, #000f28 100%);
    padding: 60px 0 0;
    border-top: 2px solid rgba(140, 85, 255, 0.3);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 25px;
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(140, 85, 255, 0.2);
}

.footer-section {
    color: #dfe7ff;
}

.footer-logo img {
    filter: brightness(0) invert(1);
}

.footer-title {
    color: #8c55ff;
    font-size: 1.2rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.footer-desc {
    line-height: 1.7;
    color: rgba(223, 231, 255, 0.8);
    font-size: 0.9rem;
}

.footer-heading {
    color: #8c55ff;
    font-size: 1.1rem;
    margin-bottom: 20px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-list {
    list-style: none;
    padding: 0;
}

.footer-list li {
    margin-bottom: 12px;
}

.footer-list li a {
    color: rgba(223, 231, 255, 0.8);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.footer-list li a:hover {
    color: #8c55ff;
    padding-left: 5px;
}

.footer-list li a i {
    font-size: 0.7rem;
}

.footer-contact {
    list-style: none;
    padding: 0;
}

.footer-contact li {
    display: flex;
    gap: 12px;
    margin-bottom: 15px;
    color: rgba(223, 231, 255, 0.8);
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-contact li i {
    color: #8c55ff;
    font-size: 1rem;
    margin-top: 3px;
    min-width: 18px;
}

.footer-contact li a {
    color: rgba(223, 231, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-contact li a:hover {
    color: #8c55ff;
}

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(140, 85, 255, 0.1);
    border: 1px solid rgba(140, 85, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #8c55ff;
    transition: all 0.3s ease;
    text-decoration: none;
}

.footer-social a:hover {
    background: #8c55ff;
    color: #00091a;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(140, 85, 255, 0.4);
}

.footer-bottom {
    padding: 25px 0;
    text-align: center;
    color: rgba(223, 231, 255, 0.6);
    font-size: 0.9rem;
}

.footer-bottom p {
    margin: 5px 0;
}

.footer-credit {
    font-size: 0.85rem;
    color: rgba(223, 231, 255, 0.5);
}

/* Responsive Footer */
@media (max-width: 992px) {
    .footer-top {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}

@media (max-width: 576px) {
    .footer-top {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}