/* ==========================================================================
   Zen Nature / Mindfulness & Ecology Bootstrap 5 Theme
   Inspired by ZenBlog & Medicio Free Bootstrap 5 Templates
   Designed for Bright From Within (brightfromwithin.local)
   ========================================================================== */

:root {
    --primary-green: #1B4D3E;
    --primary-green-hover: #143A2F;
    --secondary-green: #2d5a27;
    --dark-green: #122921;
    --light-green: #e8f3ee;
    --soft-sage: #f4f8f5;
    --accent-gold: #c5a059;
    --accent-gold-light: #f9f3e8;
    --zen-cream: #faf8f5;
    --text-dark: #233329;
    --text-muted: #5e7165;
    --white: #ffffff;
    --border-color: #dce6df;
    --glass-bg: rgba(255, 255, 255, 0.94);
    --shadow-sm: 0 4px 16px rgba(27, 77, 62, 0.05);
    --shadow-md: 0 10px 30px rgba(27, 77, 62, 0.08);
    --shadow-lg: 0 16px 40px rgba(27, 77, 62, 0.12);
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 22px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Sarabun', 'Prompt', sans-serif;
    background-color: var(--zen-cream);
    background-image: 
        radial-gradient(at 0% 0%, rgba(232, 243, 238, 0.7) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(249, 243, 232, 0.7) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-dark);
    line-height: 1.75;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding-top: 86px; /* Space for fixed navbar */
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Prompt', 'Kanit', sans-serif;
    color: var(--primary-green);
    font-weight: 600;
    line-height: 1.35;
    margin-bottom: 1rem;
}

a {
    color: var(--primary-green);
    transition: all 0.25s ease;
}

a:hover {
    color: var(--accent-gold);
}

/* ==========================================================================
   1. TOP NAVBAR (Glassmorphic Sticky Header)
   ========================================================================== */
.navbar.zen-navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1050;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(27, 77, 62, 0.08);
    box-shadow: 0 4px 20px rgba(27, 77, 62, 0.05);
    padding: 0.65rem 0;
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.3s ease, box-shadow 0.3s ease;
}

.navbar.nav-hidden {
    transform: translateY(-100%);
}

.nav-logo {
    font-family: 'Prompt', sans-serif;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary-green) !important;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    letter-spacing: -0.3px;
}

.nav-logo .brand-badge {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary-green), var(--secondary-green));
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(27, 77, 62, 0.2);
    overflow: hidden;
    flex-shrink: 0;
}

.nav-logo .brand-badge img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.nav-logo .brand-subtitle {
    display: block;
    font-size: 0.7rem;
    font-weight: 400;
    color: var(--text-muted);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-top: -2px;
}

/* Desktop Navigation Links */
.zen-nav-list {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0.25rem;
}

.zen-nav-list > li > a,
.zen-nav-list > li > .nav-link {
    font-family: 'Prompt', sans-serif;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-dark) !important;
    text-decoration: none;
    padding: 0.5rem 0.85rem !important;
    border-radius: 50px;
    transition: all 0.25s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    white-space: nowrap;
}

.zen-nav-list > li > a i,
.zen-nav-list > li > .nav-link i {
    font-size: 0.88rem;
    color: var(--primary-green);
    opacity: 0.85;
    transition: transform 0.2s ease;
}

.zen-nav-list > li > a:hover,
.zen-nav-list > li > .nav-link:hover,
.zen-nav-list > li > a.active {
    background-color: var(--light-green);
    color: var(--primary-green) !important;
}

.zen-nav-list > li > a:hover i {
    transform: translateY(-1px);
    opacity: 1;
}

/* Action Buttons in Navbar */
.btn-zen-outline {
    font-family: 'Prompt', sans-serif;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--primary-green) !important;
    border: 1.5px solid rgba(27, 77, 62, 0.25);
    border-radius: 50px;
    padding: 0.42rem 1rem !important;
    background: transparent;
    transition: all 0.25s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.btn-zen-outline:hover {
    background: var(--light-green);
    border-color: var(--primary-green);
    color: var(--primary-green) !important;
}

.btn-zen-primary {
    font-family: 'Prompt', sans-serif;
    font-size: 0.88rem;
    font-weight: 500;
    color: #ffffff !important;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--secondary-green) 100%);
    border: none;
    border-radius: 50px;
    padding: 0.45rem 1.1rem !important;
    box-shadow: 0 4px 12px rgba(27, 77, 62, 0.2);
    transition: all 0.25s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.btn-zen-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(27, 77, 62, 0.3);
    color: #ffffff !important;
}

/* Dropdown Menus */
.dropdown-menu.zen-dropdown {
    border: 1px solid rgba(27, 77, 62, 0.08);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
    background: #ffffff;
    min-width: 210px;
}

.dropdown-menu.zen-dropdown .dropdown-item {
    font-family: 'Prompt', sans-serif;
    font-size: 0.88rem;
    border-radius: 8px;
    padding: 0.55rem 0.85rem;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.dropdown-menu.zen-dropdown .dropdown-item:hover {
    background-color: var(--light-green);
    color: var(--primary-green);
}

/* ==========================================================================
   2. MAIN LAYOUT & STICKY SIDEBAR (Bootstrap 5 Modern Grid)
   ========================================================================== */
.main-layout {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 2rem;
    margin-top: 1.5rem;
    margin-bottom: 3rem;
    align-items: start;
}

/* Modern Sticky Sidebar (No more fixed overlapping!) */
aside.sidebar {
    position: sticky;
    top: 104px;
    width: 100%;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(27, 77, 62, 0.09);
    box-shadow: var(--shadow-md);
    transition: top 0.3s ease, box-shadow 0.3s ease;
    z-index: 10;
}

body:has(.navbar.nav-hidden) aside.sidebar {
    top: 24px;
}

aside.sidebar .sidebar-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding-bottom: 0.85rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--light-green);
}

aside.sidebar .sidebar-header h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin: 0;
    color: var(--primary-green);
    letter-spacing: 0.2px;
}

/* Sidebar Navigation List */
.sidebar-menu {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.sidebar-menu li {
    margin: 0;
    width: 100%;
}

.sidebar-menu a,
.sidebar-menu.horizontal a {
    font-family: 'Prompt', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.65rem 0.9rem;
    background: var(--soft-sage);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    transition: all 0.22s ease;
}

.sidebar-menu a i,
.sidebar-menu.horizontal a i {
    width: 20px;
    text-align: center;
    color: var(--primary-green);
    font-size: 0.95rem;
    transition: transform 0.22s ease, color 0.22s ease;
}

.sidebar-menu a:hover,
.sidebar-menu.horizontal a:hover,
.sidebar-menu a.active {
    background: var(--primary-green);
    color: #ffffff !important;
    border-color: var(--primary-green);
    transform: translateX(4px);
    box-shadow: 0 4px 12px rgba(27, 77, 62, 0.18);
}

.sidebar-menu a:hover i,
.sidebar-menu.horizontal a:hover i,
.sidebar-menu a.active i {
    color: var(--accent-gold);
    transform: scale(1.1);
}

/* Quote / Note Card in Sidebar */
.zen-quote-card {
    margin-top: 1.5rem;
    padding: 1.2rem;
    background: linear-gradient(145deg, var(--light-green) 0%, var(--accent-gold-light) 100%);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-gold);
    font-size: 0.88rem;
    color: var(--text-dark);
    position: relative;
    overflow: hidden;
}

.zen-quote-card .quote-icon {
    color: var(--accent-gold);
    font-size: 1.2rem;
    margin-bottom: 0.4rem;
    display: block;
}

/* ==========================================================================
   3. MAIN CONTENT AREA & CARDS
   ========================================================================== */
main.content,
.content {
    background: var(--white);
    padding: 2.25rem 2.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(27, 77, 62, 0.08);
    box-shadow: var(--shadow-md);
    min-width: 0;
    width: 100%;
    margin: 0; /* Reset old margin-left: 320px and margin-top: 100px */
}

/* Blog & Article Cards (.content2 and .zen-blog-card) */
.content2,
.zen-blog-card {
    background: var(--white);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    border: 1px solid rgba(27, 77, 62, 0.08);
    box-shadow: var(--shadow-sm);
    height: 100%;
    transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.28s ease, border-color 0.28s ease;
    display: flex;
    flex-direction: column;
}

.content2:hover,
.zen-blog-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(197, 160, 89, 0.4);
}

.post-img {
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 1rem;
    background-color: var(--soft-sage);
}

.content2 .post-img img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    padding-bottom: 0 !important;
    transition: transform 0.4s ease;
}

.content2:hover .post-img img {
    transform: scale(1.05);
}

.post-title {
    font-family: 'Prompt', sans-serif !important;
    font-size: 1.08rem;
    font-weight: 600 !important;
    color: var(--primary-green) !important;
    line-height: 1.45;
    margin-bottom: 0.6rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.2s ease;
}

.content2:hover .post-title {
    color: var(--secondary-green) !important;
}

.post-content p {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.6;
    flex-grow: 1;
}

/* Blog Details Page Styling */
.blog-details .article .post-img {
    max-height: 460px;
    border-radius: var(--radius-md);
    margin-bottom: 1.75rem;
    box-shadow: var(--shadow-sm);
}

.blog-details .article .post-img img {
    width: 100%;
    max-height: 460px;
    object-fit: cover;
    padding-bottom: 0;
}

.blog-details .article .title {
    font-size: 1.85rem;
    font-weight: 700;
    color: var(--primary-green);
    margin-bottom: 1rem;
}

.blog-details .meta-top {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    padding: 0.85rem 1.25rem;
    background: var(--soft-sage);
    border-radius: var(--radius-sm);
    margin-bottom: 1.75rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    border-left: 4px solid var(--primary-green);
}

.blog-details .meta-top a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
}

.blog-details .meta-top i {
    color: var(--primary-green);
    margin-right: 0.3rem;
}

/* ==========================================================================
   4. BOOTSTRAP OVERRIDES & PAGINATION
   ========================================================================== */
.btn-primary {
    background-color: var(--primary-green) !important;
    border-color: var(--primary-green) !important;
    font-family: 'Prompt', sans-serif;
    font-weight: 500;
    border-radius: 8px;
    padding: 0.5rem 1.25rem;
    transition: all 0.25s ease;
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--primary-green-hover) !important;
    border-color: var(--primary-green-hover) !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(27, 77, 62, 0.25);
}

.text-primary {
    color: var(--primary-green) !important;
}

.bg-primary {
    background-color: var(--primary-green) !important;
}

.pagination {
    display: flex;
    list-style: none;
    padding-left: 0;
    gap: 0.4rem;
    margin-top: 1.5rem;
}

.pagination li a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--primary-green);
    background-color: #ffffff;
    font-family: 'Prompt', sans-serif;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
}

.pagination li a:hover {
    background-color: var(--light-green);
    color: var(--primary-green);
    border-color: var(--primary-green);
}

.pagination li.active a {
    background-color: var(--primary-green);
    color: #ffffff;
    border-color: var(--primary-green);
    box-shadow: 0 4px 10px rgba(27, 77, 62, 0.2);
}

/* ==========================================================================
   5. FOOTER (Modern Zen Botanical Footer)
   ========================================================================== */
footer.zen-footer {
    margin-top: auto;
    background: linear-gradient(180deg, #ffffff 0%, var(--soft-sage) 100%);
    border-top: 1px solid rgba(27, 77, 62, 0.12);
    padding: 4rem 0 2rem;
    position: relative;
    z-index: 20;
    color: var(--text-dark);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.3fr 1fr 1.2fr;
    gap: 2.5rem;
    text-align: left;
    margin-bottom: 2.5rem;
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-green);
    margin-bottom: 1.2rem;
    position: relative;
    padding-bottom: 0.6rem;
}

.footer-section h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 36px;
    height: 3px;
    background: var(--accent-gold);
    border-radius: 2px;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.footer-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.94rem;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.footer-links a:hover {
    color: var(--primary-green);
    transform: translateX(4px);
}

.social-links a {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: #ffffff;
    border: 1px solid var(--border-color);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.25s ease;
}

.social-links a:hover {
    transform: translateY(-3px);
    border-color: var(--primary-green);
    box-shadow: 0 6px 15px rgba(27, 77, 62, 0.12);
}

.text-instagram { color: #E1306C !important; }
.text-youtube { color: #FF0000 !important; }
.text-linkedin { color: #0077B5 !important; }
.text-researchgate { color: #00CCBB !important; }
.text-orcid { color: #A6CE39 !important; }

.copyright {
    padding-top: 1.75rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.88rem;
    color: var(--text-muted);
    text-align: center;
}

/* ==========================================================================
   6. FORMS & MOBILE RESPONSIVENESS
   ========================================================================== */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"],
select,
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(27, 77, 62, 0.12);
}

.btn-submit {
    background-color: var(--primary-green);
    color: var(--white);
    padding: 0.8rem 2rem;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    transition: all 0.25s ease;
}

.btn-submit:hover {
    background-color: var(--primary-green-hover);
    transform: translateY(-1px);
}

/* Offcanvas Mobile Drawer */
.offcanvas.zen-offcanvas {
    border-right: none;
    box-shadow: var(--shadow-lg);
}

.offcanvas.zen-offcanvas .offcanvas-header {
    background: linear-gradient(135deg, var(--primary-green), var(--secondary-green));
    color: #ffffff;
    padding: 1.25rem 1.5rem;
}

.offcanvas.zen-offcanvas .offcanvas-title {
    color: #ffffff;
    font-weight: 600;
    margin: 0;
}

.offcanvas.zen-offcanvas .nav-link {
    font-family: 'Prompt', sans-serif;
    font-size: 0.95rem;
    color: var(--text-dark);
    padding: 0.65rem 0.9rem;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.offcanvas.zen-offcanvas .nav-link i {
    width: 22px;
    text-align: center;
    color: var(--primary-green);
}

.offcanvas.zen-offcanvas .nav-link:hover {
    background-color: var(--light-green);
    color: var(--primary-green);
}

@media (max-width: 991.98px) {
    body {
        padding-top: 74px;
    }

    .main-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        margin-top: 1rem;
    }

    aside.sidebar {
        display: none; /* Handled by Offcanvas on mobile/tablet */
    }

    main.content,
    .content {
        padding: 1.5rem;
        border-radius: var(--radius-md);
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 575.98px) {
    main.content,
    .content {
        padding: 1.15rem;
    }

    .blog-details .article .title {
        font-size: 1.45rem;
    }
}