:root {
    /* Primary Info Blue */
    --color-primary-lighter: #D9EDFE;
    --color-primary-light: #8DBFFB;
    --color-primary-main: #4285F4;
    --color-primary-dark: #214BAF;
    --color-primary-darker: #0C2375;
    --color-primary-contrast: #FFFFFF;

    /* Success Green */
    --color-success-lighter: #DCFAD8;
    --color-success-light: #86E48D;
    --color-success-main: #34A853;
    --color-success-dark: #1A7845;
    --color-success-darker: #095038;

    /* Warning Yellow */
    --color-warning-lighter: #FEF9CC;
    --color-warning-light: #FDE768;
    --color-warning-main: #FBCC05;
    --color-warning-dark: #B48B02;
    --color-warning-darker: #785800;

    /* Error Red */
    --color-error-lighter: #FDE6D6;
    --color-error-light: #F8A185;
    --color-error-main: #EA4335;
    --color-error-dark: #A81A27;
    --color-error-darker: #700A23;

    /* Grey Scale */
    --color-grey-50: #F6FBFB;
    --color-grey-100: #EDF7F7;
    --color-grey-200: #DDEFEF;
    --color-grey-300: #B9CFD1;
    --color-grey-400: #8CA0A4;
    --color-grey-500: #546368;
    --color-grey-600: #3D5059;
    --color-grey-700: #2A3E4A;
    --color-grey-800: #1A2C3C;
    --color-grey-900: #101F31;

    /* Theme Variables - Dark (Default) */
    --bg-body: var(--color-grey-900);
    --text-body: var(--color-grey-100);
    --text-muted: var(--color-grey-400);
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-card-hover: rgba(255, 255, 255, 0.1);
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-color: rgba(0, 0, 0, 0.3);
}

:root.light {
    /* Theme Variables - Light */
    --bg-body: var(--color-grey-50);
    --text-body: var(--color-grey-900);
    --text-muted: var(--color-grey-600);
    --bg-card: #FFFFFF;
    --bg-card-hover: var(--color-grey-100);
    --border-color: var(--color-grey-200);
    --shadow-color: rgba(66, 133, 244, 0.15);
}

body {
    background-color: var(--bg-body);
    color: var(--text-body);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-body);
}

::-webkit-scrollbar-thumb {
    background: var(--color-grey-600);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-grey-500);
}

/* Glassmorphism Utilities */
.glass {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
}

.glass-nav {
    background: rgba(16, 31, 49, 0.85); /* Fixed dark for nav for now, or variable? */
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

:root.light .glass-nav {
    background: rgba(255, 255, 255, 0.85);
}

/* Gradient Text */
.text-gradient {
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-image: linear-gradient(to right, var(--color-primary-main), var(--color-primary-light));
}

/* Smooth Scroll Behavior */
html {
    scroll-behavior: smooth;
}

/* Animation Utilities */
@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

/* Card Hover Effects */
.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    background: var(--bg-card-hover);
    border-color: var(--color-primary-main);
    box-shadow: 0 20px 40px -10px var(--shadow-color);
}

/* FAQ Accordion */
.faq-item {
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
}

.faq-header {
    cursor: pointer;
    transition: background-color 0.2s;
}

.faq-header:hover {
    background-color: var(--bg-card-hover);
}

.faq-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
}

.faq-item.active .faq-body {
    max-height: 1000px; /* Arbitrary large height */
    transition: max-height 0.5s ease-in-out;
}

.faq-icon {
    transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}