/* ==========================
   پایه
========================== */
html, body {
    margin: 0;
    padding: 0;
    direction: rtl;
    font-family: "Poppins", sans-serif;
    background-color: #0b1d17;
    color: #d1d5db;
}

/* ==========================
   هدر صفحه توضیحات
========================== */
.explain-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(90deg, #0b1d17, #1f3d2b);
    padding: 15px 25px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.7);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-main-title {
    font-size: 22px;
    font-weight: 700;
    color: #c9a227;
}

.header-sub-title {
    font-size: 14px;
    color: #e5e7eb;
}

.mg-logo {
    font-size: 22px;
    font-weight: 700;
    color: #c9a227;
}

.mg-text {
    font-size: 14px;
    color: #e5e7eb;
}

/* لوگوی وسط هدر */
.header-logo-center {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 50;
}

.header-logo-animated {
    width: 150px;
    opacity: 0;
    animation: logoFadeGlow 10s ease-in-out infinite;
}

@keyframes logoFadeGlow {
    0% { opacity: 0; filter: drop-shadow(0 0 0px rgba(255,215,0,0)); }
    20% { opacity: 1; }
    40% { filter: drop-shadow(0 0 10px rgba(255,215,0,0.5)); }
    60% { filter: drop-shadow(0 0 18px rgba(255,215,0,0.9)); }
    75% { filter: drop-shadow(0 0 6px rgba(255,215,0,0.4)); }
    100% { opacity: 0; }
}

/* ==========================
   کانتینر
========================== */
.container {
    width: 95%;
    max-width: 900px;
    margin: 30px auto 40px;
}

/* ==========================
   دکمه بازگشت
========================== */
.back-row {
    text-align: center;
    margin-bottom: 20px;
}

.back-btn {
    padding: 10px 20px;
    background: #1f3d2b;
    border: 1px solid #c9a227;
    color: #fef9c3;
    border-radius: 8px;
    cursor: pointer;
    transition: 0.3s;
}

.back-btn:hover {
    background: #2a4f3b;
}

/* ==========================
   آکاردئون
========================== */
.accordion {
    background: radial-gradient(circle at top left, #122821 0%, #0b1d17 55%, #050c09 100%);
    border-right: 4px solid #c9a227;
    border-radius: 12px;
    margin-bottom: 18px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.85);
    overflow: hidden;
}

.accordion-header {
    padding: 15px;
    font-size: 18px;
    font-weight: 700;
    color: #c9a227;
    display: flex;
    justify-content: space-between;
    cursor: pointer;
}

.accordion-arrow {
    transition: 0.3s;
}

.accordion.open .accordion-arrow {
    transform: rotate(180deg);
}

.accordion-body {
    max-height: 0;
    overflow: hidden;
    padding: 0 15px;
    transition: max-height 0.4s ease;
}

.accordion.open .accordion-body {
    max-height: 800px;
    padding: 15px;
}

.accordion-body p {
    font-size: 14px;
    line-height: 1.9;
    color: #d1d5db;
    margin-bottom: 10px;
}

/* ==========================
   کارت پایین صفحه
========================== */
.explain-bottom-card {
    background: radial-gradient(circle at top left, #122821 0%, #0b1d17 55%, #050c09 100%);
    padding: 20px;
    border-radius: 12px;
    border-right: 4px solid #c9a227;
    box-shadow: 0 4px 16px rgba(0,0,0,0.85);
    margin-top: 25px;
}

.explain-bottom-row {
    text-align: center;
    margin: 10px 0;
}

.hover-link {
    color: #c9a227;
    cursor: pointer;
    transition: 0.3s;
}

.hover-link:hover {
    color: #fef9c3;
    text-shadow: 0 0 8px rgba(201,162,39,0.6);
}

/* ==========================
   فوتر
========================== */
.explain-footer {
    background: #050c09;
    padding: 15px;
    text-align: center;
    color: #9ca3af;
    border-top: 1px solid #1f3d2b;
}

/* ==========================
   ریسپانسیو
========================== */
@media (max-width: 768px) {

    .header-main-title { font-size: 18px; }
    .header-sub-title { font-size: 12px; }

    .header-logo-center {
        transform: translate(-50%, -50%) scale(0.7);
    }

    .header-logo-animated { width: 110px; }
}

@media (max-width: 480px) {
    .header-logo-center {
        transform: translate(-50%, -50%) scale(0.6);
        top: 55%;
    }
    .header-logo-animated { width: 100px; }
}