:root {
    --primary: #059669;
    --primary-light: #10b981;
    --primary-dark: #047857;
    --dark: #0f172a;
    --gray: #64748b;
    --light: #f8fafc;
    --white: #ffffff;
}

/* =============================
   Dark Mode Header Styles
   Used by: pricing.html, philosophy.html, index.html, how-it-works.html
============================= */

/* Default dark header - blends with dark backgrounds */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.3);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Scrolled state - light frosted glass on white backgrounds */
.header.scrolled {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 24px;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    font-size: 1.5rem;
    color: white;
    transition: all 0.3s ease;
}

.header.scrolled .logo {
    color: var(--dark);
}

.logo span {
    font-family: 'Inter', serif;
    font-weight: 600;
}

.logo:hover {
    transform: translateX(4px);
}

.logo-img {
    width: 50px;
    height: 50px;
    display: block;
}

.nav-links {
    display: flex;
    gap: 40px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding-bottom: 4px;
    transition: color 0.3s ease;
}

.header.scrolled .nav-links a {
    color: var(--gray);
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background: var(--primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
}

.nav-links a:hover,
.nav-links a.active {
    color: white;
}

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

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

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

.btn {
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: none;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-ghost {
    background: transparent;
    color: white;
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.1);
}

.header.scrolled .btn-ghost {
    color: var(--dark);
}

.header.scrolled .btn-ghost:hover {
    background: var(--light);
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 1px 2px rgba(5, 150, 105, 0.1);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.2);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

.header.scrolled .mobile-menu-toggle {
    color: var(--dark);
}

/* =============================
   Footer Styles
   Used by: all public pages
============================= */
.footer {
    background: var(--dark);
    color: white;
    padding: 60px 0 30px;
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 16px;
}

.footer-brand p {
    color: #94a3b8;
    line-height: 1.6;
    font-size: 0.95rem;
}

.footer-section h4 {
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
    font-size: 1rem;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 0.95rem;
}

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

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #94a3b8;
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    color: #94a3b8;
    font-size: 1.2rem;
    transition: color 0.3s ease, transform 0.2s ease;
}

.social-links a:hover {
    color: var(--primary);
    transform: translateY(-2px);
}

/* =============================
   Responsive Adjustments
============================= */
@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
}

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

    .nav-buttons {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }
}