:root {
    --brand-primary: #0A2647;
    --brand-secondary: #112B3C;
    --brand-accent: #F5A623;
    --text-dark: #333333;
    --text-light: #666666;
    --bg-light: #F4F6F9;
    --white: #FFFFFF;
    --shadow-sm: 0 2px 4px rgba(10, 38, 71, 0.05);
    --shadow-md: 0 8px 16px rgba(10, 38, 71, 0.08);
    --shadow-lg: 0 16px 32px rgba(10, 38, 71, 0.12);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
}

.dd-course-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

/* Hero Section */
.dd-hero-section {
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
    color: var(--white);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}
.dd-hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 50px;
    align-items: center;
}
.dd-hero-content {
    animation: dd-fade-up 0.8s ease-out forwards;
}
.dd-hero-content h1 {
    font-size: 42px;
    line-height: 1.2;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--white);
}
.dd-hero-content h1 span {
    color: var(--brand-accent);
}
.dd-hero-tagline {
    font-size: 18px;
    line-height: 1.6;
    color: #E2E8F0;
    margin-bottom: 30px;
}
.dd-hero-bullets {
    margin-bottom: 35px;
    list-style: none;
    padding: 0;
}
.dd-hero-bullets li {
    font-size: 16px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
}
.dd-hero-bullets li::before {
    content: "✓";
    color: var(--brand-accent);
    font-weight: bold;
    margin-right: 12px;
    font-size: 18px;
}
.dd-hero-ctas {
    display: flex;
    gap: 20px;
}
.dd-btn {
    display: inline-block;
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 700;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
}
.dd-btn-primary {
    background-color: var(--brand-accent);
    color: var(--brand-primary);
    animation: dd-pulse 2s infinite;
}
.dd-btn-primary:hover {
    background-color: #E0951C;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(245, 166, 35, 0.4);
}
.dd-btn-secondary {
    background-color: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}
.dd-btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}
.dd-hero-image-wrapper img {
    width: 100%;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 4px solid rgba(255, 255, 255, 0.1);
    animation: dd-float 6s ease-in-out infinite;
}

/* Keyframes for Hero Animations */
@keyframes dd-fade-up {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}
@keyframes dd-float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-12px);
    }
    100% {
        transform: translateY(0px);
    }
}
@keyframes dd-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(245, 166, 35, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(245, 166, 35, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(245, 166, 35, 0);
    }
}

/* Stats/Trust Bar */
.dd-stats-bar {
    background-color: var(--bg-light);
    padding: 30px 0;
    border-bottom: 1px solid #E2E8F0;
}
.dd-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}
.dd-stat-item h3 {
    font-size: 32px;
    font-weight: 800;
    color: var(--brand-primary);
    margin-bottom: 5px;
}
.dd-stat-item p {
    font-size: 14px;
    color: var(--text-light);
    font-weight: 600;
}

/* Page Submenu / Navigation */
.dd-page-nav {
    background: var(--white);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid #E2E8F0;
    padding: 15px 0;
}
.dd-page-nav-list {
    display: flex;
    justify-content: center;
    gap: 40px;
    list-style: none;
    padding: 0;
    margin: 0;
}
.dd-page-nav-list a {
    color: var(--text-dark);
    font-weight: 700;
    text-decoration: none;
    font-size: 15px;
    transition: color 0.3s;
}
.dd-page-nav-list a:hover {
    color: var(--brand-accent);
}

/* Section Common Styling */
.dd-section {
    padding: 80px 0;
}
.dd-section-bg {
    background-color: var(--bg-light);
}
.dd-section-title {
    text-align: center;
    font-size: 32px;
    font-weight: 800;
    color: var(--brand-primary);
    margin-bottom: 50px;
}
.dd-section-title span {
    color: var(--brand-accent);
}

/* Highlights Grid */
.dd-highlights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.dd-highlight-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border-top: 5px solid var(--brand-accent);
}
.dd-highlight-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}
.dd-highlight-card h4 {
    font-size: 18px;
    font-weight: 800;
    color: var(--brand-primary);
    margin-bottom: 15px;
}
.dd-highlight-card p {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-light);
}

/* Syllabus Accordions */
.dd-syllabus-wrapper {
    max-width: 800px;
    margin: 0 auto;
}
.dd-accordion-item {
    background-color: var(--white);
    border: 1px solid #E2E8F0;
    border-radius: var(--radius-sm);
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.dd-accordion-header {
    background-color: var(--white);
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
    font-weight: 700;
    font-size: 17px;
    color: var(--brand-primary);
    transition: background-color 0.3s;
}
.dd-accordion-header:hover {
    background-color: #F8FAFC;
}
.dd-accordion-icon {
    font-size: 20px;
    color: var(--brand-accent);
    transition: transform 0.3s;
}
.dd-accordion-content {
    display: none;
    padding: 20px;
    border-top: 1px solid #E2E8F0;
    background-color: #FAFBFD;
}
.dd-accordion-content ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.dd-accordion-content li {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-light);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}
.dd-accordion-content li::before {
    content: "•";
    color: var(--brand-accent);
    font-weight: bold;
    font-size: 18px;
    margin-right: 12px;
}
.dd-accordion-item.active .dd-accordion-content {
    display: block;
}
.dd-accordion-item.active .dd-accordion-icon {
    transform: rotate(45deg);
}

/* AI Mastery Box */
.dd-ai-mastery-card {
    background: linear-gradient(135deg, #112B3C 0%, #0A2647 100%);
    color: var(--white);
    padding: 50px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border-left: 8px solid var(--brand-accent);
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    align-items: center;
}
.dd-ai-mastery-card h3 {
    font-size: 28px;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 15px;
}
.dd-ai-mastery-card h3 span {
    color: var(--brand-accent);
}
.dd-ai-mastery-card p {
    font-size: 16px;
    line-height: 1.6;
    color: #CBD5E1;
    margin-bottom: 25px;
}
.dd-ai-tools-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.dd-ai-badge {
    background-color: rgba(245, 166, 35, 0.15);
    color: var(--brand-accent);
    border: 1px solid rgba(245, 166, 35, 0.3);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 700;
}
/* 50+ AI Tools Sliding Hub */
.dd-ai-marquee-wrapper {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    overflow: hidden;
}
.dd-ai-marquee-row {
    display: block !important;
    overflow: hidden;
    width: 100%;
    position: relative;
    padding: 10px 0;
    mask-image: linear-gradient(to right, transparent, #000 15%, #000 85%, transparent);
    -webkit-mask-image: linear-gradient(to right, transparent, #000 15%, #000 85%, transparent);
}
.dd-ai-marquee-track-l2r {
    display: flex !important;
    flex-wrap: nowrap !important;
    width: max-content;
    animation: dd-slide-l2r 50s linear infinite;
}
.dd-ai-marquee-track-r2l {
    display: flex !important;
    flex-wrap: nowrap !important;
    width: max-content;
    animation: dd-slide-r2l 50s linear infinite;
}
.dd-ai-marquee-track-l2r:hover, .dd-ai-marquee-track-r2l:hover {
    animation-play-state: paused;
}
.dd-ai-marquee-list {
    display: flex !important;
    flex-wrap: nowrap !important;
    gap: 20px;
    padding-right: 20px;
}
.dd-ai-tool-badge {
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 50px;
    padding: 12px 24px;
    color: var(--white);
    font-size: 14px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: all 0.3s;
    backdrop-filter: blur(5px);
}
.dd-ai-tool-badge:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--brand-accent);
    transform: scale(1.05) translateY(-2px);
    box-shadow: 0 4px 20px rgba(245, 166, 35, 0.2);
}
.dd-ai-tool-badge span {
    font-size: 18px;
}

@keyframes dd-slide-l2r {
    0% { transform: translateX(-50%); }
    100% { transform: translateX(0); }
}
@keyframes dd-slide-r2l {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Scholarship Banner (for PG course) */
.dd-scholarship-banner {
    background-color: #FEF3C7;
    border: 2px dashed #F59E0B;
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 30px;
    color: #92400E;
    text-align: center;
    font-weight: 700;
    font-size: 16px;
}
.dd-scholarship-banner span {
    color: #B45309;
    font-size: 18px;
    font-weight: 800;
}

/* LMS & Job Portal Showcase Section */
.dd-portals-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}
.dd-portal-card {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    border: 1px solid #E2E8F0;
    transition: all 0.3s ease;
}
.dd-portal-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}
.dd-portal-text {
    padding: 30px;
    flex-grow: 1;
}
.dd-portal-text h3 {
    font-size: 22px;
    font-weight: 800;
    color: var(--brand-primary);
    margin-bottom: 15px;
}
.dd-portal-text p {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-light);
    margin-bottom: 20px;
}
.dd-badge-blue {
    display: inline-block;
    background-color: rgba(10, 38, 71, 0.08);
    color: var(--brand-primary);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 700;
}
.dd-portal-image {
    padding: 0 30px 30px 30px;
}
.dd-portal-image img {
    width: 100%;
    border-radius: var(--radius-sm);
    border: 1px solid #E2E8F0;
    box-shadow: var(--shadow-sm);
}

/* Pricing Section */
.dd-pricing-box {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 2px solid var(--brand-primary);
}
.dd-pricing-header {
    background-color: var(--brand-primary);
    color: var(--white);
    padding: 30px;
    text-align: center;
}
.dd-pricing-header h4 {
    font-size: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--brand-accent);
    margin-bottom: 10px;
}
.dd-price-display {
    font-size: 38px;
    font-weight: 800;
}
.dd-price-display span {
    font-size: 16px;
    font-weight: 400;
    color: #94A3B8;
    text-decoration: line-through;
    margin-right: 10px;
}
.dd-pricing-body {
    padding: 40px;
}
.dd-pricing-body ul {
    list-style: none;
    padding: 0;
    margin: 0 0 30px 0;
}
.dd-pricing-body li {
    font-size: 16px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    color: var(--text-dark);
}
.dd-pricing-body li::before {
    content: "✓";
    color: #10B981;
    font-weight: bold;
    margin-right: 15px;
    font-size: 18px;
}

/* Testimonials Endless CSS Marquee */
.dd-marquee-container {
    overflow: hidden;
    width: 100%;
    position: relative;
    padding: 20px 0;
    mask-image: linear-gradient(to right, transparent, #000 10%, #000 90%, transparent);
}
.dd-marquee-track {
    display: flex;
    width: max-content;
    animation: dd-marquee-scroll 45s linear infinite;
}
.dd-marquee-track:hover {
    animation-play-state: paused;
}
.dd-marquee-list {
    display: flex;
    gap: 30px;
    padding-right: 30px;
}
.dd-testimonial-card {
    flex-shrink: 0;
    width: 350px;
    background-color: var(--white);
    padding: 30px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid #E2E8F0;
}
.dd-testimonial-rating {
    color: var(--brand-accent);
    font-size: 18px;
    margin-bottom: 15px;
}
.dd-testimonial-card p {
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-light);
    font-style: italic;
    margin-bottom: 25px;
    white-space: normal;
}
.dd-student-info {
    display: flex;
    align-items: center;
    gap: 15px;
}
.dd-student-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50px;
    background-color: var(--brand-primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 18px;
}
.dd-student-details h5 {
    font-size: 15px;
    font-weight: 700;
    color: var(--brand-primary);
    margin: 0 0 3px 0;
}
.dd-student-details p {
    font-size: 12px;
    color: var(--text-light);
    margin: 0;
    font-style: normal;
}

@keyframes dd-marquee-scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

/* Partners Section */
.dd-partners-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 50px;
}
.dd-partners-logos img {
    height: 35px;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: all 0.3s;
}
.dd-partners-logos img:hover {
    filter: grayscale(0);
    opacity: 1;
}

/* Call To Action Banner */
.dd-cta-banner {
    background: linear-gradient(135deg, var(--brand-secondary) 0%, var(--brand-primary) 100%);
    color: var(--white);
    text-align: center;
    padding: 60px 20px;
    border-radius: var(--radius-lg);
    margin-top: 40px;
}
.dd-cta-banner h3 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 15px;
}
.dd-cta-banner p {
    font-size: 18px;
    margin-bottom: 30px;
    color: #E2E8F0;
}

/* Sticky Footer Mobile CTA */
.dd-sticky-footer {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--white);
    box-shadow: 0 -4px 10px rgba(0,0,0,0.1);
    z-index: 999;
    padding: 10px 15px;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}
.dd-sticky-btn {
    padding: 12px 5px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}
.dd-sticky-call {
    background-color: var(--brand-primary);
    color: var(--white);
}
.dd-sticky-whatsapp {
    background-color: #25D366;
    color: var(--white);
}
.dd-sticky-demo {
    background-color: var(--brand-accent);
    color: var(--brand-primary);
}

/* Media Queries for Mobile Responsiveness */
@media (max-width: 991px) {
    .dd-hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    .dd-hero-bullets li {
        justify-content: center;
    }
    .dd-hero-ctas {
        justify-content: center;
    }
    .dd-hero-image-wrapper {
        max-width: 500px;
        margin: 0 auto;
    }
    .dd-highlights-grid, .dd-portals-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .dd-ai-mastery-card {
        grid-template-columns: 1fr;
        padding: 30px;
    }
    .dd-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    .dd-ai-interactive-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .dd-hero-section {
        padding: 50px 0;
    }
    .dd-hero-content h1 {
        font-size: 32px;
    }
    .dd-hero-ctas {
        flex-direction: column;
        gap: 15px;
    }
    .dd-page-nav {
        display: none;
    }
    .dd-sticky-footer {
        display: grid;
    }
    body {
        padding-bottom: 60px !important;
    }
    .dd-ai-interactive-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}