/* Core Palette & Variables */
:root {
    --primary-purple: #5b21b6; /* Deep Violet */
    --light-purple: #8b5cf6;
    --dark-purple: #2e1065;
    --accent-green: #10b981; /* Emerald Green */
    --hover-green: #059669;
    --text-main: #334155;
    --bg-light: #f8fafc;
}

/* Core Typography */
body {
    font-family: 'Inter', sans-serif;
    color: var(--text-main);
    background-color: var(--bg-light) !important;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
    color: #0f172a;
    font-weight: 700;
}

/* Navbar Customizations - Deep Purple Gradient */
.navbar-dark.bg-dark {
    background: linear-gradient(135deg, var(--dark-purple) 0%, var(--primary-purple) 100%) !important;
    border-bottom: 2px solid var(--accent-green);
}

/* Custom Overrides for standard Bootstrap Info classes */
.text-info {
    color: var(--accent-green) !important;
}
.bg-info {
    background-color: var(--accent-green) !important;
}
.btn-info {
    background-color: var(--accent-green);
    border-color: var(--accent-green);
    color: white;
    font-weight: 600;
}
.btn-info:hover {
    background-color: var(--hover-green);
    border-color: var(--hover-green);
    color: white;
}

/* Sidebar Navigation */
.sidebar {
    background: #ffffff;
    border-right: 1px solid #e2e8f0;
    min-height: calc(100vh - 60px);
    padding: 20px;
}
.sidebar .nav-item { margin-bottom: 0.5rem; }
.sidebar strong {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--light-purple);
    display: block;
    margin-bottom: 0.5rem;
    margin-top: 1.5rem;
}
.sidebar a {
    color: #475569;
    text-decoration: none;
    font-size: 0.9rem;
    display: block;
    padding: 0.25rem 0;
    transition: color 0.2s ease;
}
.sidebar a:hover {
    color: var(--primary-purple);
}
.sidebar a.active {
    color: var(--accent-green);
    font-weight: 600;
}

/* Modern Product Cards (Homepage) */
.product-card {
    background: #fff;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    border-top: 4px solid var(--light-purple);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}
.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(91, 33, 182, 0.1); /* Subtle purple shadow */
    border-top: 4px solid var(--accent-green); /* Swap to green on hover */
}
.product-card-body {
    padding: 2rem;
    flex-grow: 1;
}
.product-icon-wrapper {
    width: 60px;
    height: 60px;
    background-color: #f3e8ff; /* Very light purple */
    color: var(--primary-purple);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

/* Article Reading View */
.article-body {
    font-size: 1.05rem;
    line-height: 1.7;
}
.article-body pre {
    background: #1e293b;
    color: #f8fafc;
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    border-left: 3px solid var(--accent-green);
}
/* --- Category View Additions --- */
.custom-back-btn {
    transition: color 0.2s ease, transform 0.2s ease;
    font-weight: 500;
}
.custom-back-btn:hover {
    color: var(--primary-purple) !important;
    transform: translateX(-4px); /* Slides slightly left to indicate "back" */
}

.category-card {
    border-top: 3px solid transparent !important;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.category-card:hover {
    border-top-color: var(--accent-green) !important;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05) !important;
}

.article-link {
    transition: transform 0.2s ease;
}
.article-link:hover {
    transform: translateX(4px); /* Slides slightly right on hover */
}
.article-link:hover .hover-purple {
    color: var(--primary-purple) !important;
}
/* Feedback Buttons */
.hover-purple-btn {
    transition: all 0.2s ease;
}
.hover-purple-btn:hover {
    background-color: var(--primary-purple);
    border-color: var(--primary-purple);
    color: white;
}
/* --- Release Notes Timeline --- */
.timeline {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 2rem;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: #e2e8f0;
}
.timeline-item {
    position: relative;
    margin-bottom: 3rem;
}
.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.35rem;
    top: 0.25rem;
    width: 1rem;
    height: 1rem;
    border-radius: 50%;
    background-color: var(--bg-light);
    border: 3px solid var(--primary-purple);
    box-shadow: 0 0 0 4px var(--bg-light);
}
.timeline-item.latest::before {
    border-color: var(--accent-green);
    background-color: var(--accent-green);
}
.release-version {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark-purple);
}
.release-date {
    font-size: 0.85rem;
    color: #64748b;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.release-badge {
    font-size: 0.75rem;
    padding: 0.35em 0.65em;
    border-radius: 4px;
    font-weight: 600;
}
.badge-feature { background-color: #e0e7ff; color: #4338ca; }
.badge-bugfix { background-color: #fee2e2; color: #b91c1c; }
.badge-security { background-color: #fef3c7; color: #b45309; }
.badge-update { background-color: #f3f4f6; color: #374151; }
/* --- FAQ Accordions --- */
.accordion-item {
    border: 1px solid #e2e8f0;
    border-radius: 8px !important;
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}
.accordion-button {
    font-weight: 600;
    color: var(--text-main);
    background-color: #fff;
    padding: 1.25rem 1.5rem;
}
.accordion-button:not(.collapsed) {
    color: var(--primary-purple);
    background-color: #f3e8ff;
    box-shadow: none;
}
.accordion-button:focus {
    box-shadow: none;
    border-color: rgba(91, 33, 182, 0.2);
}
.accordion-body {
    padding: 1.5rem;
    color: #475569;
    line-height: 1.7;
    background-color: #fff;
    border-top: 1px solid #e2e8f0;
}
/* Customizing the Accordion Arrow */
.accordion-button::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2364748b'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}
.accordion-button:not(.collapsed)::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%235b21b6'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}