/* ==========================================================================
   DESIGN SYSTEM VARIABLES (Light and Dark Mode Tokens)
   ========================================================================== */

:root {
    /* Font family */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    /* Light Theme Palette */
    --primary: #4f46e5;            /* Indigo */
    --primary-hover: #4338ca;
    --primary-light: #e0e7ff;
    --secondary: #0d9488;          /* Teal */
    --secondary-hover: #0f766e;
    --background: #f8fafc;         /* Light slate gray background */
    --surface: #ffffff;            /* Card/Module background */
    --text-primary: #0f172a;       /* Charcoal Slate */
    --text-secondary: #475569;     /* Gray */
    --border: #e2e8f0;             /* Soft divider */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -1px rgba(0,0,0,0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.05), 0 4px 6px -2px rgba(0,0,0,0.03);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* Badge Colors */
    --easy-bg: #dcfce7;
    --easy-text: #15803d;
    --medium-bg: #fef9c3;
    --medium-text: #a16207;
    --hard-bg: #fee2e2;
    --hard-text: #b91c1c;
}

/* Dark Mode Overrides */
[data-theme="dark"] {
    --background: #0f172a;         /* Deep Slate */
    --surface: #1e293b;            /* Slate Card */
    --text-primary: #f8fafc;       /* Off-white */
    --text-secondary: #94a3b8;     /* Muted gray */
    --border: #334155;             /* Darker dividers */
    --primary-light: #312e81;
    --primary: #818cf8;            /* Lighter indigo for contrast */
    --primary-hover: #6366f1;
    --secondary: #2dd4bf;          /* Lighter teal */
    --secondary-hover: #14b8a6;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.2), 0 2px 4px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.25), 0 4px 6px -2px rgba(0,0,0,0.15);

    /* Dark Badge Colors */
    --easy-bg: #064e3b;
    --easy-text: #6ee7b7;
    --medium-bg: #78350f;
    --medium-text: #fef08a;
    --hard-bg: #7f1d1d;
    --hard-text: #fca5a5;
}

/* ==========================================================================
   BASE & RESET RULES
   ========================================================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

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

/* Utility Containers */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Section Common Headers */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px auto;
}

.sub-title {
    display: inline-block;
    color: var(--secondary);
    text-transform: uppercase;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    margin-bottom: 12px;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 16px;
}

.section-header p {
    color: var(--text-secondary);
}

/* Badges styling */
.badge {
    display: inline-block;
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
    text-transform: uppercase;
}

.badge-easy {
    background-color: var(--easy-bg);
    color: var(--easy-text);
}

.badge-medium {
    background-color: var(--medium-bg);
    color: var(--medium-text);
}

.badge-hard {
    background-color: var(--hard-bg);
    color: var(--hard-text);
}

/* Divider inside card */
.card-divider {
    border: 0;
    height: 1px;
    background-color: var(--border);
    margin: 15px 0;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--primary-light);
    color: var(--primary) !important;
}

.btn-secondary:hover {
    background-color: var(--border);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--border);
    color: var(--text-primary);
}

.btn-outline:hover {
    background-color: var(--border);
    transform: translateY(-2px);
}

/* ==========================================================================
   STICKY NAVIGATION BAR
   ========================================================================== */

.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

[data-theme="dark"] .navbar {
    background-color: rgba(15, 23, 42, 0.85);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 75px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo i {
    color: var(--primary);
}

.nav-menu ul {
    display: flex;
    gap: 32px;
}

.nav-menu a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 8px 0;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-btn {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-btn:hover {
    background-color: var(--border);
    color: var(--primary);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.3rem;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
}

/* ==========================================================================
   PAGE BANNER (Shared Headers)
   ========================================================================== */

.page-banner {
    background: linear-gradient(135deg, var(--primary-light) 0%, rgba(13,148,136,0.1) 100%);
    padding: 60px 0;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.page-banner h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.page-banner p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================================================
   1. HOME PAGE STYLING
   ========================================================================== */

/* Hero Section */
.hero-section {
    padding: 80px 0;
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero-badge {
    background-color: var(--primary-light);
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 700;
    padding: 6px 12px;
    border-radius: 50px;
    text-transform: uppercase;
    display: inline-block;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.hero-content h1 {
    font-size: 3.25rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.hero-image {
    display: flex;
    justify-content: center;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

/* Placement Stats Cards */
.stats-section {
    padding: 50px 0;
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    transition: background-color 0.3s ease;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    border-radius: var(--radius-md);
    background-color: var(--background);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    font-size: 2.2rem;
    color: var(--primary);
}

.stat-info h3 {
    font-size: 1.8rem;
    font-weight: 800;
}

.stat-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Features grid */
.features-section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    padding: 30px;
    border-radius: var(--radius-md);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-md);
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background-color: var(--primary);
    color: #ffffff;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 20px;
    flex-grow: 1;
}

.feature-link {
    font-size: 0.9rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
}

/* Why Choose Section */
.why-choose-section {
    padding: 80px 0;
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    transition: background-color 0.3s ease;
}

.why-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
    align-items: center;
}

.why-image svg {
    border-radius: var(--radius-md);
}

.why-list {
    margin-top: 30px;
}

.why-list li {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.list-icon {
    font-size: 1.4rem;
    color: var(--secondary);
    margin-top: 2px;
}

.why-list li strong {
    font-size: 1.05rem;
    display: block;
    margin-bottom: 4px;
}

.why-list li p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Testimonials */
.testimonials-section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    padding: 30px;
    border-radius: var(--radius-md);
    position: relative;
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.quote-icon {
    font-size: 2.2rem;
    color: var(--primary-light);
    margin-bottom: 15px;
}

.testimonial-text {
    font-style: italic;
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
}

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

.user-avatar {
    font-size: 2.2rem;
    color: var(--text-secondary);
}

.user-info h4 {
    font-size: 0.95rem;
    font-weight: 700;
}

.user-info p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Call to Action Box */
.cta-section {
    padding: 80px 0;
    background-color: var(--surface);
    transition: background-color 0.3s ease;
}

.cta-box {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: 60px;
    border-radius: var(--radius-lg);
    text-align: center;
    color: #ffffff;
    box-shadow: var(--shadow-lg);
}

.cta-box h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-box p {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 30px auto;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.cta-buttons .btn-primary {
    background-color: #ffffff;
    color: var(--primary) !important;
}

.cta-buttons .btn-primary:hover {
    background-color: var(--primary-light);
}

.cta-buttons .btn-outline {
    border-color: #ffffff;
    color: #ffffff !important;
}

.cta-buttons .btn-outline:hover {
    background-color: rgba(255,255,255,0.1);
}

/* ==========================================================================
   2. ABOUT US PAGE STYLING
   ========================================================================== */

.about-vision-section {
    padding: 80px 0 40px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.about-card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    padding: 40px;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.about-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.about-card h2 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.about-card p {
    color: var(--text-secondary);
}

/* Objectives List items */
.objectives-section {
    padding: 80px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.objectives-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.obj-item {
    display: flex;
    gap: 20px;
    background-color: var(--surface);
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.obj-num {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--secondary);
    background-color: var(--primary-light);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.obj-content h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
}

.obj-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Benefits cards */
.benefits-section {
    padding: 80px 0;
    background-color: var(--surface);
    transition: background-color 0.3s ease;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.benefit-card {
    background-color: var(--background);
    padding: 30px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    text-align: center;
    transition: var(--transition);
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.benefit-icon {
    font-size: 2.2rem;
    color: var(--secondary);
    margin-bottom: 16px;
}

.benefit-card h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
}

.benefit-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ==========================================================================
   3. APTITUDE & DSA PAGES STYLING
   ========================================================================== */

/* Search bar styling */
.search-section {
    padding: 40px 0;
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    transition: background-color 0.3s ease;
}

.search-container {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    display: flex;
    gap: 12px;
}

.search-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.search-container input {
    width: 100%;
    padding: 14px 20px 14px 45px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background-color: var(--background);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.search-container input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

/* Topic Grid layout */
.topics-grid-section {
    padding: 60px 0;
}

.topics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.topic-card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 30px;
    transition: var(--transition);
}

.topic-card:hover {
    box-shadow: var(--shadow-md);
}

.topic-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.topic-header h2 {
    font-size: 1.4rem;
    font-weight: 700;
}

.topic-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
}

/* Collapsible Accordions */
.accordion-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    padding: 14px 20px;
    background-color: var(--background);
    color: var(--text-primary);
    border: none;
    text-align: left;
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition);
}

.accordion-header::after {
    content: '\f078'; /* FontAwesome angle-down */
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    transition: transform 0.3s;
}

.accordion-header.active {
    background-color: var(--primary-light);
    color: var(--primary);
}

.accordion-header.active::after {
    transform: rotate(180deg);
}

.accordion-content {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
    background-color: var(--surface);
}

.accordion-content.open {
    padding: 20px;
    max-height: 1000px; /* Large enough value to allow content to show */
    transition: max-height 0.3s cubic-bezier(1, 0, 1, 0), padding 0.3s ease;
}

.accordion-content ul {
    padding-left: 20px;
    list-style-type: disc;
}

.accordion-content li {
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.accordion-content code {
    background-color: var(--background);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: Consolas, monospace;
    font-size: 0.85rem;
    color: var(--primary);
}

/* Practice Questions Box */
.question-box {
    background-color: var(--background);
    padding: 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    border-left: 4px solid var(--primary);
}

.question-text {
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.btn-reveal {
    background: none;
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 6px 12px;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
}

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

.reveal-content {
    display: none;
    margin-top: 15px;
    border-top: 1px solid var(--border);
    padding-top: 15px;
}

.reveal-content.show {
    display: block;
}

.answer-text {
    font-size: 0.9rem;
    color: var(--secondary);
    margin-bottom: 6px;
}

.explanation-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Roadmap List inside DSA */
.roadmap-list {
    padding-left: 20px;
    list-style-type: decimal;
}

.roadmap-list li {
    margin-bottom: 10px;
    font-size: 0.9rem;
}

/* ==========================================================================
   4. COMPANY INFORMATION PAGE
   ========================================================================== */

.company-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.company-card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 30px;
    transition: var(--transition);
}

.company-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.company-card-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.company-logo-badge {
    width: 55px;
    height: 55px;
    background-color: var(--primary-light);
    color: var(--primary);
    border-radius: 50%;
    font-size: 1.6rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.company-card h2 {
    font-size: 1.4rem;
    font-weight: 800;
}

.package-info {
    font-size: 0.85rem;
    color: var(--secondary);
    font-weight: 600;
}

.criteria-box {
    background-color: var(--background);
    padding: 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-size: 0.9rem;
    border: 1px dashed var(--border);
}

.criteria-box strong i {
    color: var(--primary);
}

.criteria-box p {
    margin-top: 4px;
    color: var(--text-secondary);
}

.tips-list {
    list-style-type: square !important;
}

/* ==========================================================================
   5. CONTACT US PAGE STYLING
   ========================================================================== */

.contact-section {
    padding: 80px 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
}

.contact-info-panel {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: #ffffff;
    padding: 40px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.contact-info-panel h2 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.panel-subtitle {
    font-size: 0.95rem;
    opacity: 0.85;
    margin-bottom: 40px;
}

.info-details {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.info-detail-item {
    display: flex;
    gap: 20px;
}

.item-icon {
    font-size: 1.3rem;
    background-color: rgba(255,255,255,0.15);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-detail-item h3 {
    font-size: 1.05rem;
    margin-bottom: 4px;
}

.info-detail-item p {
    font-size: 0.9rem;
    opacity: 0.9;
}

.panel-socials {
    margin-top: 50px;
    border-top: 1px solid rgba(255,255,255,0.15);
    padding-top: 30px;
}

.panel-socials h3 {
    font-size: 1rem;
    margin-bottom: 15px;
}

.panel-socials .social-links a {
    background-color: rgba(255,255,255,0.15);
    color: #ffffff;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-right: 12px;
}

.panel-socials .social-links a:hover {
    background-color: #ffffff;
    color: var(--primary);
    transform: translateY(-3px);
}

/* Contact form side panel */
.contact-form-panel {
    background-color: var(--surface);
    padding: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    transition: background-color 0.3s ease;
}

.contact-form-panel h2 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.contact-form-panel .panel-subtitle {
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 22px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.required-star {
    color: var(--hard-text);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 16px;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px 12px 42px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background-color: var(--background);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-group textarea {
    padding-left: 42px;
    padding-top: 14px;
    resize: vertical;
}

.textarea-wrapper .input-icon {
    top: 16px;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.btn-submit {
    width: 100%;
    padding: 14px;
}

.error-msg {
    display: block;
    color: var(--hard-text);
    font-size: 0.8rem;
    margin-top: 6px;
    font-weight: 500;
    min-height: 18px;
}

/* Success Banner inside Contact form */
.success-banner {
    background-color: var(--easy-bg);
    color: var(--easy-text);
    padding: 20px;
    border-radius: var(--radius-sm);
    display: flex;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 24px;
    border-left: 5px solid var(--easy-text);
}

.success-banner i {
    font-size: 1.5rem;
    margin-top: 2px;
}

.success-banner h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.success-banner p {
    font-size: 0.85rem;
    opacity: 0.9;
}

/* ==========================================================================
   6. PROFESSIONAL FOOTER
   ========================================================================== */

.main-footer {
    background-color: #0f172a;
    color: #94a3b8;
    padding: 80px 0 30px 0;
    border-top: 1px solid #1e293b;
    transition: var(--transition);
}

[data-theme="dark"] .main-footer {
    background-color: #020617; /* Even darker footer in dark mode */
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
}

.footer-logo i {
    color: #818cf8;
}

.info-col p {
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 24px;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    width: 36px;
    height: 36px;
    background-color: #1e293b;
    color: #94a3b8;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
}

.social-links a:hover {
    background-color: var(--primary);
    color: #ffffff;
    transform: translateY(-3px);
}

.footer-col h3 {
    color: #ffffff;
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 24px;
    position: relative;
    padding-bottom: 8px;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 35px;
    height: 2px;
    background-color: var(--primary);
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul a {
    color: #94a3b8;
    font-size: 0.9rem;
}

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

.contact-col p {
    font-size: 0.9rem;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-col p i {
    color: #818cf8;
}

.footer-bottom {
    border-top: 1px solid #1e293b;
    padding-top: 30px;
    text-align: center;
    font-size: 0.85rem;
}

/* ==========================================================================
   SCROLL TO TOP BUTTON
   ========================================================================== */

.scroll-btn {
    position: fixed;
    bottom: 30px;
    right: -60px; /* Hidden offscreen by default */
    z-index: 99;
    width: 44px;
    height: 44px;
    background-color: var(--primary);
    color: #ffffff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: right 0.4s ease, background-color 0.3s, transform 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.scroll-btn:hover {
    background-color: var(--primary-hover);
    transform: scale(1.1);
}

.scroll-btn.show {
    right: 30px; /* Slide in */
}

/* ==========================================================================
   RESPONSIVE DESIGN (Media Queries)
   ========================================================================== */

/* Tablet layouts (max-width: 1024px) */
@media (max-width: 1024px) {
    .hero-content h1 {
        font-size: 2.75rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid > div:last-child {
        grid-column: span 2; /* Stretch last review */
    }
}

/* Mobile Layouts (max-width: 768px) */
@media (max-width: 768px) {
    /* Mobile Navigation menu */
    .mobile-toggle {
        display: block;
    }
    
    .nav-menu {
        position: absolute;
        top: 75px;
        left: -100%; /* Slide out bounds */
        width: 100%;
        height: calc(100vh - 75px);
        background-color: var(--surface);
        border-top: 1px solid var(--border);
        transition: left 0.4s ease;
        overflow-y: auto;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu ul {
        flex-direction: column;
        gap: 0;
        padding: 20px 0;
    }
    
    .nav-menu ul li {
        width: 100%;
    }
    
    .nav-menu a {
        display: block;
        padding: 16px 30px;
        font-size: 1.1rem;
        border-bottom: 1px solid var(--border);
    }
    
    .nav-menu a::after {
        display: none; /* Disable underline effect on mobile */
    }
    
    /* Layout stacks */
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }
    
    .hero-content h1 {
        font-size: 2.25rem;
    }
    
    .hero-content p {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .why-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .why-image {
        order: 2; /* Put checkmarks card underneath text */
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .objectives-grid {
        grid-template-columns: 1fr;
    }
    
    .topics-grid {
        grid-template-columns: 1fr;
    }
    
    .company-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-col h3 {
        margin-bottom: 16px;
    }
}

/* Very small screens (max-width: 480px) */
@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid > div:last-child {
        grid-column: span 1;
    }
    
    .cta-box {
        padding: 30px 20px;
    }
    
    .cta-box h2 {
        font-size: 1.8rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        gap: 12px;
    }
    
    .nav-container {
        padding: 0 16px;
    }
    
    .contact-info-panel,
    .contact-form-panel {
        padding: 24px 16px;
    }
}