/* ================================================================
   Learn with Isaac — Main Stylesheet
   Base: Bootstrap 5.3 + Custom Design System
   ----------------------------------------------------------------
   Colors  : Primary #2563EB | Secondary #38BDF8 | Accent #1D4ED8
             Background #FFFFFF | Text #212121
   Design  : Square corners • Minimal shadows • Professional
   Font    : Poppins (Google Fonts)
   ================================================================
   Sections:
     1.  CSS Custom Properties
     2.  Bootstrap Variable Overrides
     3.  Base & Typography
     4.  Layout Helpers
     5.  Site Header / Navbar
     6.  Hero Sections
     7.  Section Blocks
     8.  Course Cards
     9.  Testimonials
    10.  Partners
    11.  Footer
    12.  Forms & Inputs
    13.  Buttons
    14.  Utilities & Badges
    15.  Live Chat Widget
    16.  Back-to-Top
    17.  Page-Specific: Courses Listing
    18.  Page-Specific: Apply / Instructor
    19.  Responsive Overrides
   ================================================================ */

/* ----------------------------------------------------------------
   1. CSS Custom Properties
---------------------------------------------------------------- */
:root {
    --primary:        #2563EB;
    --primary-dark:   #1D4ED8;
    --primary-light:  #38BDF8;
    --bg:             #FFFFFF;
    --text:           #212121;
    --text-muted:     #616161;
    --border:         #DEDEDE;
    --surface:        #F5F5F5;
    --surface-dark:   #EEEEEE;
    --header-height:  70px;
    --section-pad:    80px;
    --section-pad-sm: 48px;
}

/* ----------------------------------------------------------------
   2. Bootstrap Variable Overrides
---------------------------------------------------------------- */
:root {
    --bs-primary:             #2563EB;
    --bs-primary-rgb:         37, 99, 235;
    --bs-link-color:          #2563EB;
    --bs-link-hover-color:    #1D4ED8;
    --bs-border-radius:       0;
    --bs-border-radius-sm:    0;
    --bs-border-radius-lg:    0;
    --bs-border-radius-xl:    0;
    --bs-border-radius-pill:  0;
    --bs-body-font-family:    'Poppins', sans-serif;
    --bs-body-color:          #212121;
    --bs-body-bg:             #FFFFFF;
    --bs-btn-border-radius:   0;
    --bs-input-border-radius: 0;
}

/* ----------------------------------------------------------------
   3. Base & Typography
---------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
    max-width: 100%;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    max-width: 100%;
    padding-top: var(--header-height);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    line-height: 1.25;
    color: var(--text);
}

h1 { font-size: clamp(1.875rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem,   3vw, 2.125rem); }
h3 { font-size: clamp(1.125rem, 2vw, 1.375rem); }

p {
    line-height: 1.75;
    color: var(--text-muted);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover { color: var(--primary-dark); }

img { max-width: 100%; height: auto; display: block; }

/* ----------------------------------------------------------------
   4. Layout Helpers
---------------------------------------------------------------- */
.section    { padding: var(--section-pad) 0; }
.section-sm { padding: var(--section-pad-sm) 0; }

main { display: block; width: 100%; overflow-x: hidden; }

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.5rem;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-muted);
    max-width: 580px;
    margin-bottom: 2.5rem;
}

.section-subtitle.centered { margin-left: auto; margin-right: auto; text-align: center; }

.title-bar {
    display: block;
    width: 44px;
    height: 3px;
    background: var(--primary);
    margin: 0.75rem 0 2rem;
}

.title-bar.centered { margin-left: auto; margin-right: auto; }

/* ----------------------------------------------------------------
   5. Site Header / Navbar
---------------------------------------------------------------- */
.site-header {
    background: #ffffff;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1030;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
    min-height: var(--header-height);
}

.site-header .navbar-brand img {
    height: 58px;
    width: auto;
    object-fit: contain;
}

.site-header .nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text) !important;
    padding: 0.5rem 0.875rem !important;
    position: relative;
    transition: color 0.2s ease;
}

.site-header .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0.875rem;
    right: 0.875rem;
    height: 2px;
    background: var(--primary);
    transform: scaleX(0);
    transition: transform 0.2s ease;
}

.site-header .nav-link:hover,
.site-header .nav-link.active {
    color: var(--primary) !important;
}

.site-header .nav-link:hover::after,
.site-header .nav-link.active::after {
    transform: scaleX(1);
}

.site-header .navbar-toggler {
    border: 1px solid var(--border);
    border-radius: 0;
    padding: 6px 10px;
}

.site-header .navbar-toggler:focus {
    box-shadow: none;
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ----------------------------------------------------------------
   6. Hero Sections
---------------------------------------------------------------- */
.hero {
    background-color: var(--primary);
    /* background-image: url('../images/hero-bg.jpg'); — upload image to public/images/ to enable */
    background-size: cover;
    background-position: center;
    background-blend-mode: multiply;
    color: #ffffff;
    padding: 34px 0 30px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(15, 42, 95, 0.46);
    pointer-events: none;
}

.hero .container { position: relative; z-index: 1; }

.hero h1 {
    color: #ffffff;
    font-size: clamp(1.2rem, 2.4vw, 1.9rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 0.9rem;
}

.hero h1 span { color: #ffffff; }

.hero-typing span {
    color: #ffffff;
    display: block;
    font-family: "Courier New", Consolas, monospace;
    white-space: nowrap;
}

.hero-typing.typing-active span:last-child::after {
    animation: typing-caret 0.85s steps(1) infinite;
    content: '|';
    display: inline-block;
    font-weight: 400;
    margin-left: 4px;
}

@keyframes typing-caret {
    0%, 49% { opacity: 1; }
    50%, 100% { opacity: 0; }
}

.hero p {
    color: rgba(255, 255, 255, 0.88);
    font-size: 1rem;
    max-width: none;
    margin: 0 auto 1.15rem;
    white-space: nowrap;
}

/* Section label + buttons on red hero background */
.hero .section-label {
    color: rgba(255, 255, 255, 0.75);
    background: rgba(255,255,255,0.12);
    padding: 2px 8px;
}

.hero .btn-primary {
    background-color: #ffffff;
    border-color:     #ffffff;
    color:            var(--primary);
}

.hero .btn-primary:hover,
.hero .btn-primary:focus {
    background-color: rgba(255,255,255,0.88);
    border-color:     rgba(255,255,255,0.88);
    color:            var(--primary-dark);
}

/* Page hero (inner pages) */
.page-hero {
    background-color: var(--primary);
    color: #ffffff;
    padding: 52px 0;
    border-bottom: 3px solid var(--primary-dark);
}

.page-hero h1 {
    color: #ffffff;
    font-size: clamp(1.5rem, 3.5vw, 2.25rem);
    margin-bottom: 0.375rem;
}

.page-hero p {
    color: rgba(255, 255, 255, 0.82);
    margin-bottom: 0;
    font-size: 0.9375rem;
}

.page-hero .breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0.75rem 0 0;
}

.page-hero .breadcrumb-item,
.page-hero .breadcrumb-item a,
.page-hero .breadcrumb-item.active,
.page-hero .breadcrumb-item + .breadcrumb-item::before {
    color: rgba(255,255,255,0.7);
    font-size: 0.8125rem;
}

.page-hero .breadcrumb-item a:hover { color: #ffffff; }

/* Stats bar */
.stats-bar {
    background: #1a1a1a;
    color: #ffffff;
    padding: 20px 0;
}

.stats-bar .stat-item {
    text-align: center;
    padding: 12px 24px;
    border-right: 1px solid rgba(255,255,255,0.08);
}

.stats-bar .stat-item:last-child { border-right: none; }

.stats-bar .stat-number {
    display: block;
    font-size: 1.625rem;
    font-weight: 700;
    color: var(--primary-light);
    line-height: 1.1;
}

.stats-bar .stat-label {
    display: block;
    font-size: 0.75rem;
    color: rgba(255,255,255,0.55);
    text-transform: uppercase;
    letter-spacing: 0.09em;
    margin-top: 3px;
}

/* ----------------------------------------------------------------
   7. Section Blocks
---------------------------------------------------------------- */
.about-section { background: var(--bg); }

.about-feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.about-feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    font-size: 0.9375rem;
}

.about-feature-list li:last-child { border-bottom: none; }

.about-feature-list li .icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    background: var(--primary);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8125rem;
    margin-top: 2px;
}

.featured-courses-section { background: var(--surface); }

.why-item {
    padding: 28px 24px;
    border: 1px solid var(--border);
    border-left: 3px solid var(--primary);
    background: var(--bg);
    height: 100%;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.why-item:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    transform: translateY(-2px);
}

.why-item .why-icon {
    font-size: 1.75rem;
    color: var(--primary);
    margin-bottom: 12px;
}

.why-item h4 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; }
.why-item p  { font-size: 0.875rem; margin: 0; }

.cta-banner {
    background: var(--primary);
    color: #ffffff;
    padding: 56px 0;
    text-align: center;
}

.cta-banner h2  { color: #ffffff; font-size: clamp(1.375rem, 3vw, 1.875rem); margin-bottom: 0.75rem; }
.cta-banner p   { color: rgba(255,255,255,0.85); font-size: 1rem; margin-bottom: 1.75rem; }

/* Primary button on red CTA background — invert to white */
.cta-banner .btn-primary {
    background-color: #ffffff;
    border-color:     #ffffff;
    color:            var(--primary);
}

.cta-banner .btn-primary:hover,
.cta-banner .btn-primary:focus {
    background-color: rgba(255,255,255,0.88);
    border-color:     rgba(255,255,255,0.88);
    color:            var(--primary-dark);
}

/* ----------------------------------------------------------------
   8. Course Cards (homepage featured grid)
---------------------------------------------------------------- */
.courses-grid-hp {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.course-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-top: 3px solid var(--primary);
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
    overflow: hidden;
}

.course-card:hover {
    box-shadow: 0 6px 20px rgba(0,0,0,0.10);
    transform: translateY(-3px);
}

.course-card-img {
    position: relative;
    overflow: hidden;
    height: 240px;
    background: var(--surface-dark);
    flex-shrink: 0;
}

.course-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.35s ease;
}

.course-card:hover .course-card-img img { transform: scale(1.04); }

.course-card-body {
    padding: 18px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.course-card-body h3 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
    line-height: 1.35;
}

.course-card-body p {
    font-size: 0.8125rem;
    flex: 1;
    margin-bottom: 14px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-meta-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}

.course-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.7rem;
    font-weight: 500;
    padding: 3px 8px;
    border: 1px solid var(--border);
    color: var(--text-muted);
    background: transparent;
}

.course-tag.level-beginner      { color: #2E7D32; border-color: #A5D6A7; background: #F1F8E9; }
.course-tag.level-intermediate  { color: #E65100; border-color: #FFCC80; background: #FFF8E1; }
.course-tag.level-advanced      { color: #6A1B9A; border-color: #CE93D8; background: #F3E5F5; }

.course-card-footer {
    padding: 10px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--surface);
}

.course-fee {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--primary);
}

/* ----------------------------------------------------------------
   9. Testimonials
---------------------------------------------------------------- */
.testimonials-section { background: var(--bg); }

.testimonial-slider {
    position: relative;
    overflow: hidden;
    min-height: 180px;
}

.testimonial-slide {
    display: none;
    animation: fadeInSlide 0.4s ease;
}

.testimonial-slide.active { display: block; }

@keyframes fadeInSlide {
    from { opacity: 0; transform: translateX(16px); }
    to   { opacity: 1; transform: translateX(0); }
}

.testimonial-card {
    border: 1px solid var(--border);
    border-top: 3px solid var(--primary);
    background: var(--bg);
    padding: 32px 28px;
    max-width: 680px;
    margin: 0 auto;
}

.testimonial-text {
    font-size: 1rem;
    font-style: italic;
    color: var(--text);
    margin-bottom: 20px;
    line-height: 1.8;
    position: relative;
    padding-left: 1.5rem;
}

.testimonial-text::before {
    content: '\201C';
    position: absolute;
    left: 0;
    top: -4px;
    font-size: 2.5rem;
    color: var(--primary);
    line-height: 1;
    font-style: normal;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial-author img {
    width: 44px;
    height: 44px;
    object-fit: cover;
    border: 2px solid var(--primary);
}

.testimonial-author .name {
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--text);
    display: block;
}

.testimonial-author .role {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: block;
}

.testimonial-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 24px;
}

.testimonial-controls .prev,
.testimonial-controls .next {
    width: 36px;
    height: 36px;
    background: var(--bg);
    border: 1px solid var(--border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    color: var(--text);
    transition: background 0.2s, color 0.2s;
}

.testimonial-controls .prev:hover,
.testimonial-controls .next:hover {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
}

.testimonial-dots {
    display: flex;
    gap: 6px;
}

.testimonial-dots .dot {
    width: 8px;
    height: 8px;
    background: var(--border);
    cursor: pointer;
    transition: background 0.2s, width 0.2s;
    border: none;
}

.testimonial-dots .dot.active {
    background: var(--primary);
    width: 22px;
}

/* ----------------------------------------------------------------
   10. Partners
---------------------------------------------------------------- */
.partners-section { background: var(--surface); }

.partner-logo-card {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-align: center;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    height: 110px;
}

.partner-logo-card:hover {
    border-color: var(--primary);
    box-shadow: 0 2px 8px rgba(37,99,235,0.12);
}

.partner-logo-card img {
    max-height: 48px;
    max-width: 120px;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: grayscale(55%);
    transition: filter 0.2s ease;
}

.partner-logo-card:hover img { filter: grayscale(0%); }

.partner-logo-card span {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* ----------------------------------------------------------------
   11. Footer
---------------------------------------------------------------- */
.site-footer {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.82);
    padding: 60px 0 0;
}

.site-footer a {
    color: rgba(255,255,255,0.72);
    font-size: 0.875rem;
    text-decoration: none;
    transition: color 0.2s ease, padding-left 0.2s ease;
}

.site-footer a:hover { color: #ffffff; }

.footer-brand-logo {
    height: 64px;
    width: auto;
    object-fit: contain;
    margin-bottom: 12px;
    background: #ffffff;
    padding: 6px 10px;
    border-radius: 0;
}

.footer-tagline {
    font-size: 0.8375rem;
    color: rgba(255,255,255,0.6);
    line-height: 1.65;
    margin-top: 8px;
    margin-bottom: 0;
}

.footer-heading {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #ffffff;
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(255,255,255,0.12);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.footer-links li a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: rgba(255,255,255,0.72);
}

.footer-links li a:hover { color: #ffffff; padding-left: 4px; }

.footer-social {
    display: flex;
    gap: 8px;
    margin-top: 16px;
}

.footer-social a {
    width: 34px;
    height: 34px;
    border: 1px solid rgba(255,255,255,0.22);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    color: rgba(255,255,255,0.72);
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.footer-social a:hover {
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.45);
    color: #ffffff;
    padding-left: 0;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 10px;
    font-size: 0.875rem;
    color: rgba(255,255,255,0.72);
}

.footer-contact-item i {
    color: var(--primary-light);
    font-size: 0.8125rem;
    margin-top: 4px;
    flex-shrink: 0;
    width: 14px;
    text-align: center;
}

.footer-contact-item a { color: rgba(255,255,255,0.72); }
.footer-contact-item a:hover { color: #ffffff; }

.footer-newsletter .input-group .form-control {
    border-radius: 0 !important;
    border: 1px solid rgba(255,255,255,0.22);
    background: rgba(255,255,255,0.08);
    color: #ffffff;
    font-size: 0.875rem;
    font-family: 'Poppins', sans-serif;
}

.footer-newsletter .input-group .form-control::placeholder { color: rgba(255,255,255,0.4); }

.footer-newsletter .input-group .form-control:focus {
    outline: none;
    box-shadow: none;
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.5);
}

.footer-newsletter .btn-subscribe {
    border-radius: 0 !important;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.22);
    color: #ffffff;
    font-size: 0.8125rem;
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    padding: 0 16px;
    white-space: nowrap;
    transition: background 0.2s;
}

.footer-newsletter .btn-subscribe:hover {
    background: rgba(255,255,255,0.22);
    color: #ffffff;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.10);
    margin-top: 40px;
    padding: 16px 0;
    background: rgba(0,0,0,0.12);
}

.footer-bottom p { font-size: 0.8125rem; color: rgba(255,255,255,0.45); margin: 0; }
.footer-bottom a { color: rgba(255,255,255,0.55); font-size: 0.8125rem; }
.footer-bottom a:hover { color: #ffffff; padding-left: 0; }

/* ----------------------------------------------------------------
   12. Forms & Inputs
---------------------------------------------------------------- */
.form-control,
.form-select {
    border-radius: 0 !important;
    border-color: var(--border);
    font-family: 'Poppins', sans-serif;
    font-size: 0.875rem;
    padding: 0.6rem 0.875rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    color: var(--text);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}

.form-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 5px;
}

.form-text { font-size: 0.78rem; }

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

.form-check-input:focus {
    box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
    border-color: var(--primary);
}

/* Alert messages */
.alert-success-msg {
    background: #E8F5E9;
    border: 1px solid #A5D6A7;
    color: #2E7D32;
    padding: 12px 16px;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.alert-error-msg {
    background: #FFEBEE;
    border-left: 3px solid var(--primary);
    color: var(--primary-dark);
    padding: 12px 16px;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.alert-error-msg ul { margin: 0; padding-left: 1.1rem; }

/* ----------------------------------------------------------------
   13. Buttons
---------------------------------------------------------------- */
.btn {
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    font-size: 0.875rem;
    letter-spacing: 0.02em;
    border-radius: 0 !important;
    padding: 0.6rem 1.5rem;
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
}

.btn-primary:hover,
.btn-primary:focus {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #ffffff;
}

.btn-outline-primary {
    background: transparent;
    border: 1.5px solid var(--primary);
    color: var(--primary);
}

.btn-outline-primary:hover,
.btn-outline-primary:focus {
    background: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
}

.btn-outline-light {
    border-color: rgba(255,255,255,0.6);
    color: #ffffff;
}

.btn-outline-light:hover {
    background: rgba(255,255,255,0.12);
    border-color: #ffffff;
    color: #ffffff;
}

.btn-lg {
    padding: 0.75rem 2rem;
    font-size: 0.9375rem;
}

/* ----------------------------------------------------------------
   14. Utilities & Badges
---------------------------------------------------------------- */
.badge-primary {
    background: var(--primary);
    color: #ffffff;
    font-size: 0.68rem;
    font-weight: 500;
    padding: 3px 8px;
    letter-spacing: 0.04em;
    border-radius: 0;
}

.badge-surface {
    background: var(--surface);
    color: var(--text-muted);
    font-size: 0.68rem;
    font-weight: 500;
    padding: 3px 8px;
    border-radius: 0;
    border: 1px solid var(--border);
}

.card { border-radius: 0 !important; border-color: var(--border); }
.card-header { border-radius: 0 !important; background: var(--surface); border-color: var(--border); font-weight: 600; }

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

hr { border-color: var(--border); opacity: 1; }

/* Status labels */
.status {
    display: inline-block;
    padding: 3px 10px;
    font-size: 0.71rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    border-radius: 0;
    text-transform: uppercase;
}

.status.pending  { background: #FFF8E1; color: #F57F17; border: 1px solid #FFE082; }
.status.approved { background: #E8F5E9; color: #2E7D32; border: 1px solid #A5D6A7; }
.status.rejected { background: #FFEBEE; color: #C62828; border: 1px solid #EF9A9A; }

/* ----------------------------------------------------------------
   15. Live Chat Widget
---------------------------------------------------------------- */
#live-chat {
    position: fixed;
    bottom: 80px;
    right: 24px;
    z-index: 1040;
}

.chat-btn {
    width: 46px;
    height: 46px;
    background: var(--primary);
    color: #ffffff;
    border: none;
    font-size: 1.125rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.18);
    transition: background 0.2s;
}

.chat-btn:hover { background: var(--primary-dark); }

.chat-box {
    position: absolute;
    bottom: 58px;
    right: 0;
    width: 296px;
    background: #ffffff;
    border: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(0,0,0,0.14);
}

.chat-header {
    background: var(--primary);
    color: #ffffff;
    padding: 11px 16px;
    font-size: 0.875rem;
    font-weight: 600;
}

.chat-messages {
    flex: 1;
    padding: 12px;
    min-height: 110px;
    max-height: 190px;
    overflow-y: auto;
    font-size: 0.825rem;
    background: var(--surface);
}

#chat-input {
    border: none;
    border-top: 1px solid var(--border);
    padding: 9px 12px;
    font-family: 'Poppins', sans-serif;
    font-size: 0.825rem;
    outline: none;
    width: 100%;
}

#send-btn {
    background: var(--primary);
    color: #ffffff;
    border: none;
    padding: 9px 16px;
    font-size: 0.825rem;
    font-family: 'Poppins', sans-serif;
    cursor: pointer;
    width: 100%;
    text-align: center;
    transition: background 0.2s;
}

#send-btn:hover { background: var(--primary-dark); }

/* ----------------------------------------------------------------
   16. Back-to-Top
---------------------------------------------------------------- */
#back-to-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1035;
    width: 38px;
    height: 38px;
    background: var(--primary);
    color: #ffffff !important;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    transition: background 0.2s;
}

#back-to-top:hover { background: var(--primary-dark); }

/* ----------------------------------------------------------------
   17. Page-Specific: Courses Listing
---------------------------------------------------------------- */
.courses-sidebar {
    background: var(--primary);
    color: #ffffff;
    min-width: 200px;
    flex-shrink: 0;
}

.courses-sidebar-heading {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.55);
    padding: 20px 20px 10px;
    margin: 0;
}

.courses-sidebar-nav {
    list-style: none;
    padding: 0 0 20px;
    margin: 0;
}

.courses-sidebar-nav li a {
    display: block;
    padding: 10px 20px;
    font-size: 0.875rem;
    color: rgba(255,255,255,0.78);
    text-decoration: none;
    border-left: 3px solid transparent;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.courses-sidebar-nav li a:hover,
.courses-sidebar-nav li a.active {
    background: rgba(0,0,0,0.14);
    color: #ffffff;
    border-left-color: #ffffff;
}

.courses-layout {
    display: flex;
    gap: 0;
    align-items: flex-start;
}

.courses-content { flex: 1; min-width: 0; }

.courses-grid-listing {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.no-courses {
    color: var(--text-muted);
    font-size: 0.9375rem;
    padding: 40px 0;
}

.pagination-wrapper { padding: 24px 0; }

/* ----------------------------------------------------------------
   18. Page-Specific: Apply / Instructor Forms
---------------------------------------------------------------- */

/* --- Page top bar (replaces full red page-hero on form pages) --- */
.form-page-top {
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 24px 0;
}

.form-page-top .fp-icon {
    width: 44px;
    height: 44px;
    background: var(--primary);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.form-page-top h1 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 2px;
    line-height: 1.2;
}

.form-page-top .breadcrumb {
    margin: 0;
    font-size: 0.8rem;
}

/* --- Benefits Panel (dark sidebar) --- */
.benefits-panel {
    background: #1C1C1E;
    padding: 40px 32px;
    position: sticky;
    top: calc(var(--header-height) + 20px);
}

.benefits-panel .bp-logo {
    height: 58px;
    width: auto;
    filter: brightness(0) invert(1);
    opacity: 0.9;
    margin-bottom: 28px;
    display: block;
}

.benefits-panel h2 {
    color: #ffffff;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 6px;
    line-height: 1.3;
}

.benefits-panel .bp-subtitle {
    color: rgba(255,255,255,0.5);
    font-size: 0.8375rem;
    margin-bottom: 28px;
    line-height: 1.6;
}

.benefits-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.benefits-list li {
    display: flex;
    align-items: flex-start;
    gap: 14px;
}

.benefits-list .bl-icon {
    width: 34px;
    height: 34px;
    background: rgba(37,99,235,0.18);
    border: 1px solid rgba(37,99,235,0.3);
    color: #38BDF8;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8125rem;
    flex-shrink: 0;
}

.benefits-list .bl-text {
    color: rgba(255,255,255,0.78);
    font-size: 0.875rem;
    line-height: 1.55;
    padding-top: 7px;
}

.bp-divider {
    border: none;
    border-top: 1px solid rgba(255,255,255,0.08);
    margin: 28px 0;
}

.bp-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: rgba(255,255,255,0.07);
}

.bp-stats .bps-item {
    background: #1C1C1E;
    padding: 14px 12px;
    text-align: center;
}

.bp-stats .bps-num {
    display: block;
    font-size: 1.25rem;
    font-weight: 700;
    color: #38BDF8;
    line-height: 1.1;
}

.bp-stats .bps-lbl {
    display: block;
    font-size: 0.65rem;
    color: rgba(255,255,255,0.4);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 3px;
}

/* --- Form Panel --- */
.form-panel {
    background: var(--bg);
    border: 1px solid var(--border);
    border-top: 3px solid var(--primary);
}

.form-panel-top {
    padding: 28px 36px;
    border-bottom: 1px solid var(--border);
}

.form-panel-top h3 {
    font-size: 1.1875rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
}

.form-panel-top p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
}

.form-panel-body {
    padding: 28px 36px;
}

.form-section-group {
    margin-bottom: 28px;
}

.form-section-group:last-of-type {
    margin-bottom: 0;
}

.form-section-hd {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-muted);
    padding-bottom: 10px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.form-section-hd i {
    color: var(--primary);
    font-size: 0.75rem;
    width: 14px;
    text-align: center;
}

/* --- Submit Area --- */
.submit-area {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 24px 36px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.trust-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin: 0;
}

.trust-note i {
    color: var(--primary);
    font-size: 0.7rem;
}

/* Course detail page */
.course-desc-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
    padding: 28px 32px;
    margin-bottom: 28px;
}

.details-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }

.details-card {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 24px;
}

.details-card h2 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary);
}

.details-card table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.details-card th,
.details-card td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    text-align: left;
}

.details-card th {
    background: var(--surface);
    font-weight: 600;
    color: var(--text);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.details-card tr:last-child td { border-bottom: none; }
.details-card tr:hover td { background: #FFF5F5; }

.payments-box {
    margin-top: 20px;
    padding: 18px;
    border: 1px solid var(--border);
    border-top: 2px solid var(--primary);
    background: var(--surface);
    text-align: center;
}

.payments-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    display: block;
    margin-bottom: 12px;
}

.payments-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.payments-logos img {
    height: 36px;
    max-width: 80px;
    object-fit: contain;
    background: #fff;
    padding: 6px 10px;
    border: 1px solid var(--border);
}

/* Contact page action cards */
.action-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 20px;
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
    background: var(--bg);
    text-decoration: none;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.action-card:hover {
    box-shadow: 0 4px 14px rgba(0,0,0,0.08);
    transform: translateX(3px);
}

.action-card .icon {
    width: 44px;
    height: 44px;
    background: var(--primary);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    flex-shrink: 0;
}

.action-card-text { flex: 1; min-width: 0; overflow: hidden; }
.action-card .label { font-weight: 600; font-size: 0.9375rem; color: var(--text); display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.action-card .sub   { font-size: 0.8rem; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ----------------------------------------------------------------
   19. Responsive Overrides
---------------------------------------------------------------- */

/* ---- Tablet / Collapsed Navbar (≤991px) ---- */
@media (max-width: 991.98px) {

    /* Header */
    .site-header .navbar-collapse {
        border-top: 1px solid var(--border);
        padding: 8px 0 12px;
    }

    .site-header .nav-link::after { display: none; }

    /* Hero */
    .hero { padding: 30px 0 28px; text-align: center; }
    .hero p { margin-left: auto; margin-right: auto; white-space: normal; }
    .hero .d-flex { justify-content: center; }

    /* Stats */
    .stats-bar .stat-item {
        border-right: none;
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .stats-bar .stat-item:last-child { border-bottom: none; }

    /* Courses layout */
    .courses-layout { flex-direction: column; }
    .courses-sidebar { width: 100%; }
    .courses-sidebar-nav {
        display: flex;
        flex-wrap: wrap;
        padding: 0 12px 14px;
        gap: 4px;
    }
    .courses-sidebar-nav li a {
        padding: 6px 12px;
        border-left: none;
        border-bottom: 2px solid transparent;
    }
    .courses-sidebar-nav li a:hover,
    .courses-sidebar-nav li a.active {
        border-left-color: transparent;
        border-bottom-color: #ffffff;
        background: rgba(0,0,0,0.10);
    }

    /* Form pages */
    .benefits-panel { position: static; }
    .bp-stats       { grid-template-columns: repeat(4, 1fr); }

    /* Course detail */
    .details-grid { grid-template-columns: 1fr; }
}

/* ---- Mobile (≤767px) ---- */
@media (max-width: 767.98px) {
    :root {
        --section-pad:    52px;
        --section-pad-sm: 32px;
    }

    .footer-bottom .d-flex {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .testimonial-card        { padding: 22px 16px; }
    .testimonial-text        { font-size: 0.9375rem; }

    .courses-grid-listing    { grid-template-columns: 1fr; }
    .courses-grid-hp         { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }

    .section-title           { font-size: 1.375rem; }
    .section-subtitle        { font-size: 0.9rem; }
    .cta-banner .d-flex      { justify-content: center; }
    .footer-social           { flex-wrap: wrap; }
}

/* ---- Small Mobile / xs (≤575px) ---- */
@media (max-width: 575.98px) {
    :root {
        --section-pad:    40px;
        --section-pad-sm: 24px;
        --header-height:  62px;
    }

    /* Header */
    .site-header .navbar-brand img { height: 50px; }
    .site-header .navbar-toggler   { padding: 4px 8px; }

    /* Typography */
    .section-title           { font-size: 1.1875rem; }
    .section-subtitle        { font-size: 0.875rem; }

    /* Hero */
    .hero                    { padding: 26px 0 24px; }
    .hero h1                 { font-size: clamp(0.82rem, 4vw, 1.15rem); line-height: 1.2; }
    .hero p                  { font-size: 0.88rem; margin-bottom: 1rem; }
    .hero .d-flex            { flex-direction: column; align-items: stretch; gap: 12px !important; }
    .hero .btn               { text-align: center; }

    /* Page Hero */
    .page-hero               { padding: 32px 0; }
    .page-hero h1            { font-size: 1.35rem; }
    .page-hero p             { font-size: 0.875rem; }
    .page-hero .breadcrumb   { display: none; }

    /* Stats Bar */
    .stats-bar .stat-number  { font-size: 1.25rem; }
    .stats-bar .stat-item    { padding: 10px 12px; }
    .stats-bar .stat-label   { font-size: 0.68rem; }

    /* About Feature List */
    .about-feature-list li .icon {
        width: 28px; height: 28px; font-size: 0.75rem; flex-shrink: 0;
    }

    /* Why Items */
    .why-item                { padding: 18px 14px; }
    .why-item .why-icon      { font-size: 1.5rem; margin-bottom: 8px; }
    .why-item h4             { font-size: 0.9375rem; }
    .why-item p              { font-size: 0.8125rem; }

    /* Course Cards */
    .courses-grid-hp         { grid-template-columns: 1fr; }
    .courses-grid-listing    { grid-template-columns: 1fr; }
    .course-card-img         { height: 190px; }
    .course-card-body        { padding: 14px 16px; }
    .course-card-body h3     { font-size: 0.9375rem; }

    /* Testimonials */
    .testimonial-card             { padding: 18px 14px; }
    .testimonial-text             { font-size: 0.875rem; padding-left: 1.1rem; }
    .testimonial-text::before     { font-size: 1.75rem; }
    .testimonial-controls .prev,
    .testimonial-controls .next   { width: 32px; height: 32px; font-size: 0.8rem; }

    /* Partner Logos */
    .partner-logo-card            { height: 88px; padding: 12px 10px; }
    .partner-logo-card img        { max-height: 38px; max-width: 96px; }
    .partner-logo-card span       { font-size: 0.65rem; }

    /* CTA Banner */
    .cta-banner                   { padding: 40px 0; }
    .cta-banner h2                { font-size: 1.125rem; }
    .cta-banner p                 { font-size: 0.875rem; }
    .cta-banner .d-flex           { flex-direction: column; align-items: stretch; gap: 10px !important; }
    .cta-banner .btn              { text-align: center; }

    /* Action Cards */
    .action-card                  { padding: 14px 12px; gap: 12px; }
    .action-card .icon            { width: 36px; height: 36px; font-size: 0.9375rem; }
    .action-card .label           { font-size: 0.875rem; }
    .action-card .sub             { font-size: 0.75rem; }

    /* Form Pages (Apply / Instructor) */
    .benefits-panel               { padding: 28px 20px; }
    .bp-stats                     { grid-template-columns: 1fr 1fr; }
    .form-panel-top               { padding: 20px 20px; }
    .form-panel-body              { padding: 20px 20px; }
    .submit-area                  { padding: 20px 20px; }
    .form-page-top h1             { font-size: 1.125rem; }

    /* Course Detail */
    .course-desc-card             { padding: 16px; }
    .details-card                 { padding: 16px; }
    .details-card h2              { font-size: 1rem; }
    .details-card th,
    .details-card td              { padding: 8px 10px; font-size: 0.8125rem; }
    .payments-logos               { gap: 8px; }
    .payments-logos img           { height: 28px; max-width: 58px; padding: 4px 6px; }

    /* Chat Widget — prevent viewport overflow */
    #live-chat                    { right: 12px; bottom: 68px; }
    .chat-btn                     { width: 42px; height: 42px; font-size: 1rem; }
    .chat-box                     { width: calc(100vw - 40px); right: 0; }

    /* Back-to-Top */
    #back-to-top                  { width: 36px; height: 36px; font-size: 0.875rem; bottom: 20px; right: 20px; }

    /* Footer */
    .site-footer                  { padding: 40px 0 0; }
    .footer-bottom                { margin-top: 24px; }
    .footer-heading               { font-size: 0.7rem; }
    .footer-links li a            { font-size: 0.8125rem; }
    .footer-contact-item          { font-size: 0.8125rem; gap: 8px; }
    .footer-tagline               { font-size: 0.8rem; }

    /* Courses Content */
    .courses-content.p-4          { padding: 14px !important; }
}