:root {
    /* EduFlow360 Design System Colors */
    --primary-color: #D6660E;            /* Burnt Orange */
    --primary-dark: #B6510B;             /* Burnt Orange – darker (hover) */
    --secondary-color: #480004;          /* Deep Maroon */
    --accent-color: #480004;             /* Using Deep Maroon as accent */
    --background-light: #F7F2EF;        /* Soft Mist Gray */
    --text-primary: #565656;             /* Charcoal Gray */
    --text-secondary: #767676;           /* Slightly lighter neutral */
    --border-color: #DADADA;             /* Light Gray for borders/dividers */
    --white: #FFFFFF;                    /* Panels & cards */
    --error-color: #C62828;              /* Alert Red */
    --success-color: #388E3C;            /* Success Green */
    --max-width: 1200px;
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Roboto', 'Open Sans', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-light);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', 'Poppins', sans-serif;
    font-weight: 600;
    color: var(--text-primary);
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    background: var(--white);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.main-logo {
    height: 40px;
    width: auto;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}

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

.nav-buttons {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.btn-login {
    color: var(--primary-color);
    font-weight: 600;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
    text-decoration: none;
}

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

.btn-secondary {
    background: var(--white);
    color: var(--primary-color);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    border: 2px solid var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--white);
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    margin-left: 30px;
    font-weight: 500;
    transition: color 0.3s;
}

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

.cta-button {
    background: var(--gradient);
    color: var(--white) !important;
    padding: 10px 20px;
    border-radius: 5px;
}

/* Hero Section */
.hero {
    padding: 160px 0 80px;
    background: var(--gradient);
    color: var(--white);
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero p {
    font-size: 20px;
    margin-bottom: 40px;
}

.cta-group {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 60px;
}

.cta-primary, .cta-secondary {
    padding: 15px 30px;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: transform 0.3s;
}

.cta-primary {
    background: var(--white);
    color: var(--primary-color);
    border: none;
}

.cta-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.cta-primary:hover, .cta-secondary:hover {
    transform: translateY(-2px);
}

/* Solution Section */
.solution {
    padding: 80px 0;
    background: var(--white);
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.capability-card {
    padding: 30px;
    background: var(--light-bg);
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s;
}

.capability-card:hover {
    transform: translateY(-5px);
}

.capability-card i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* Use Cases */
.use-cases {
    padding: 80px 0;
    background: var(--light-bg);
}

.use-case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.use-case-card {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* Features */
.features {
    padding: 80px 0;
    background: var(--light-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.feature-card {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 15px;
    color: var(--text-color);
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* Tech Stack */
.tech-stack {
    padding: 80px 0;
    background: var(--light-bg);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

/* Contact Form */
.contact {
    padding: 80px 0;
}

.contact-wrapper {
    max-width: 900px;
    margin: 0 auto;
    background: var(--white);
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0,0,0,0.06);
    border: 1px solid var(--border-color);
}

#contact-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

#contact-form textarea {
    grid-column: 1 / -1;
    resize: vertical;
}

#contact-form button {
    grid-column: 1 / -1;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 0.9rem 1.8rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    justify-self: start;
    transition: var(--transition);
}

#contact-form button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

#contact-form input,
#contact-form textarea {
    transition: var(--transition);
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 16px;
}

#contact-form textarea {
    height: 150px;
    resize: vertical;
}

#contact-form input:focus,
#contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(214, 102, 14, 0.15);
}

/* Footer */
.footer {
    background: var(--secondary-color);
    color: var(--white);
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.footer-col h3 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: var(--white);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    color: var(--white);
    font-size: 22px;
    transition: var(--transition);
}

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

/* Footer Links */
.footer-col a {
    color: var(--white);
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

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

/* Newsletter form */
#newsletter-form {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

#newsletter-form input {
    flex: 1;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
}

#newsletter-form input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(214, 102, 14, 0.15);
}

#newsletter-form button {
    background: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 0.75rem 1.2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

#newsletter-form button:hover {
    background: var(--primary-dark);
}

/* Responsive Design */
/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.gradient-heading {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.cta-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu {
        display: block;
    }

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .gradient-heading {
        font-size: 2.5rem;
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

    .cta-group {
        justify-content: center;
    }
}