/* --- শিক্ষা সহায়তা পেজের সম্পূর্ণ স্টাইল --- */

body { 
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #e3f2fd; 
    overflow-x: hidden;
}

/* --- হেডার সেকশন --- */
.header { 
    background: #0288d1;
    color: white;
    padding: 35px 15px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.header-center-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.logo img { 
    width: 115px; 
    height: auto; 
}

.titles h1 { 
    margin: 0; 
    font-size: 34px; 
}

.titles h3 { 
    margin: 5px 0; 
    color: #ffd700; 
    font-size: 22px; 
}

.slogan { 
    font-size: 16px; 
    font-style: italic; 
    opacity: 0.9; 
}

/* --- নেভিগেশন বার --- */
.navbar { 
    background: #01579b; 
    text-align: center; 
    padding: 15px; 
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar a { 
    color: white; 
    text-decoration: none; 
    padding: 0 20px; 
    font-weight: bold; 
    font-size: 16px; 
}

/* --- ইন্ডিকেটর ব্যাজ (পেজ টাইটেল) --- */
.indicator-badge {
    background: #b3e5fc;
    padding: 12px 50px;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    border-bottom: 6px solid #0288d1;
    color: #01579b;
    font-size: 24px;
    font-weight: bold;
    display: inline-block;
}

/* --- পাঠাগার বাটন --- */
.library-container {
    max-width: 1100px;
    margin: 20px auto;
    display: flex;
    justify-content: flex-end;
    padding: 0 20px;
}

.library-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #ffd700;
    color: #01579b;
    padding: 10px 20px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    border: 2px solid #01579b;
    transition: 0.3s;
    font-size: 20px;
}

.library-btn:hover {
    background: #01579b;
    color: #ffd700;
    transform: scale(1.05);
}

/* --- মেইন কার্ড এরিয়া --- */
.edu-wrapper {
    max-width: 1100px;
    margin: 20px auto 60px;
    padding: 0 20px;
}

.edu-card-main {
    background: white;
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    border-top: 8px solid #0288d1;
}

/* --- গ্রিড এবং বক্স স্টাইল --- */
.edu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.edu-box {
    background: #d6ebf9; 
    padding: 25px;
    border-radius: 15px;
    border: 1px solid #b3d9f2;
    transition: 0.3s;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.edu-box:hover { 
    transform: translateY(-5px); 
    box-shadow: 0 8px 20px rgba(0,0,0,0.15); 
    background: #c5e3f7;
}

.edu-circle {
    width: 70px;
    height: 70px;
    background: white;
    border-radius: 50%;
    margin: 0 auto 15px;
    line-height: 70px;
    font-size: 35px;
    border: 3px solid #0288d1;
}

.edu-box h3 { 
    color: #01579b; 
    margin: 10px 0; 
    font-size: 20px; 
}

.edu-box p { 
    color: #555; 
    font-size: 14px; 
    line-height: 1.5; 
}

/* --- বিশেষ প্রকল্প বক্স --- */
.project-box {
    background: #fff9c4;
    padding: 25px;
    border-radius: 12px;
    text-align: left;
    border-left: 6px solid #ffd700;
    margin-top: 30px;
}

.project-box h4 { 
    margin-top: 0; 
    color: #01579b; 
    margin-bottom: 10px; 
}

.project-box p { 
    margin: 8px 0; 
    color: #333; 
    line-height: 1.6;
}

/* --- ফুটার --- */
.footer {
    background: #01579b;
    color: white;
    text-align: center;
    padding: 15px;
    font-size: 14px;
    border-top: 4px solid #ffd700;
}

/* --- রেসপন্সিভ ডিজাইন --- */
@media (max-width: 767px) {
    .header { padding: 25px 10px; }
    .titles h1 { font-size: 22px; }
    .titles h3 { font-size: 18px; }
    .logo img { width: 80px; }
    .indicator-badge { font-size: 18px; padding: 10px 30px; }
    .edu-card-main { padding: 20px; }
    .navbar a { padding: 0 10px; font-size: 14px; }
}