:root {
    /* Tetradic Inspired Color Scheme */
    --primary-color: #4A69BD; /* Soothing Blue */
    --secondary-color: #F5A623; /* Vibrant Orange */
    --accent-color-1: #50C878; /* Fresh Green */
    --accent-color-2: #C0392B; /* Strong Red */

    /* Neutral Tones */
    --neutral-light: #F8F9FA; /* Very Light Grey */
    --neutral-medium: #DEE2E6; /* Light Grey */
    --neutral-dark: #343A40;  /* Dark Grey */
    --neutral-darker: #212529; /* Near Black */

    /* Text Colors */
    --text-light: #FFFFFF;
    --text-dark: #333333;
    --text-dark-headings: #222222;
    --text-muted: #6c757d;

    /* Glassmorphism Base */
    --glass-blur: 8px;
    --glass-border-radius: 15px;
    --glass-shadow: 0 4px 25px rgba(0, 0, 0, 0.1);

    /* Glassmorphism variants */
    --glass-bg-light-theme: rgba(255, 255, 255, 0.6); /* For elements on light page backgrounds */
    --glass-border-light-theme: rgba(255, 255, 255, 0.7);
    --glass-bg-dark-theme: rgba(40, 40, 40, 0.45); /* For elements on dark page backgrounds */
    --glass-border-dark-theme: rgba(255, 255, 255, 0.15);

    /* Fonts */
    --font-primary: 'Space Grotesk', sans-serif;
    --font-secondary: 'DM Sans', sans-serif;

    /* Spacing & Transitions */
    --spacing-unit: 1rem;
    --transition-speed: 0.3s;
    --transition-timing: ease-in-out;

    /* Button Specific */
    --button-primary-bg: var(--primary-color);
    --button-primary-text: var(--text-light);
    --button-primary-hover-bg: #3A59A7; /* Darker primary */

    --button-secondary-bg: var(--secondary-color);
    --button-secondary-text: var(--neutral-darker);
    --button-secondary-hover-bg: #E0930F; /* Darker secondary */

    --button-outline-light-border: var(--text-light);
    --button-outline-light-text: var(--text-light);
    --button-outline-light-hover-bg: rgba(255, 255, 255, 0.15);

    --button-outline-dark-border: var(--text-dark-headings);
    --button-outline-dark-text: var(--text-dark-headings);
    --button-outline-dark-hover-bg: rgba(0, 0, 0, 0.05);
}

/* Global Styles */
body {
    font-family: var(--font-secondary);
    background-color: var(--neutral-light);
    color: var(--text-dark);
    line-height: 1.7;
    font-size: clamp(1rem, 1.8vw, 1.1rem); /* Adaptive base font size */
    overflow-x: hidden;
    padding-top: 80px; /* Account for fixed header */
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    color: var(--text-dark-headings);
    margin-bottom: 0.75em;
    line-height: 1.3;
}

h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); }
h2.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 0.5em;
    color: var(--text-dark-headings);
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
}
.section-bg-dark h2.section-title,
.section-bg-cta h2.section-title {
    color: var(--text-light);
    text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
}
.section-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    color: var(--text-muted);
    margin-bottom: calc(var(--spacing-unit) * 2.5);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}
.section-bg-dark .section-subtitle,
.section-bg-cta .section-subtitle {
    color: rgba(255,255,255,0.8);
}


p {
    margin-bottom: var(--spacing-unit);
    font-size: clamp(0.95rem, 1.7vw, 1.05rem);
}

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

a:hover {
    color: var(--button-primary-hover-bg);
    text-decoration: underline;
}

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

/* Buttons - Global */
.btn {
    font-family: var(--font-primary);
    font-weight: 500;
    padding: 0.75rem 1.75rem;
    border-radius: 50px; /* Pill shape */
    transition: all var(--transition-speed) var(--transition-timing);
    font-size: clamp(0.9rem, 2vw, 1.1rem);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border-width: 2px;
    border-style: solid;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.btn-primary {
    background-color: var(--button-primary-bg);
    border-color: var(--button-primary-bg);
    color: var(--button-primary-text);
}
.btn-primary:hover {
    background-color: var(--button-primary-hover-bg);
    border-color: var(--button-primary-hover-bg);
    color: var(--button-primary-text);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.btn-secondary {
    background-color: var(--button-secondary-bg);
    border-color: var(--button-secondary-bg);
    color: var(--button-secondary-text);
}
.btn-secondary:hover {
    background-color: var(--button-secondary-hover-bg);
    border-color: var(--button-secondary-hover-bg);
    color: var(--button-secondary-text);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

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

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

.btn-lg {
    padding: 0.9rem 2.2rem;
    font-size: clamp(1rem, 2.2vw, 1.2rem);
}

/* Forms - Global */
.form-control {
    font-family: var(--font-secondary);
    padding: 0.75rem 1rem;
    border-radius: var(--glass-border-radius);
    border: 1px solid var(--neutral-medium);
    background-color: rgba(255,255,255,0.8);
    backdrop-filter: blur(5px);
    transition: border-color var(--transition-speed) var(--transition-timing), box-shadow var(--transition-speed) var(--transition-timing);
    font-size: 1rem;
}
.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(var(--primary-color), 0.25);
    background-color: rgba(255,255,255,0.9);
}
textarea.form-control {
    min-height: 120px;
}

/* Header / Navbar */
.navbar {
    padding-top: 1rem;
    padding-bottom: 1rem;
    transition: background-color var(--transition-speed) var(--transition-timing), padding var(--transition-speed) var(--transition-timing);
}
.glassmorphism-nav {
    background: var(--glass-bg-dark-theme);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--glass-border-dark-theme);
    box-shadow: var(--glass-shadow);
}
.navbar-brand {
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: clamp(1.5rem, 3vw, 1.8rem) !important; /* Override bootstrap */
    color: var(--text-light) !important;
}
.nav-link {
    font-family: var(--font-secondary);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8) !important;
    margin-left: 0.5rem;
    margin-right: 0.5rem;
    padding: 0.5rem 0.75rem !important;
    border-radius: 5px;
    transition: color var(--transition-speed) var(--transition-timing), background-color var(--transition-speed) var(--transition-timing);
}
.nav-link:hover, .nav-link.active {
    color: var(--text-light) !important;
    background-color: rgba(255, 255, 255, 0.1);
}
.navbar-toggler {
    border-color: rgba(255,255,255,0.2);
}
.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.8%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Hero Section */
.hero-section {
    min-height: 90vh; /* Adjusted from 100vh to prevent overlap with fixed header more gracefully */
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    position: relative; /* For pseudo-elements if needed */
    padding-top: 120px; /* Extra padding to push content down from header */
    padding-bottom: 60px;
}
.hero-title {
    font-size: clamp(2.8rem, 6vw, 4.5rem); /* Larger for hero */
    font-weight: 700;
    color: var(--text-light) !important; /* Enforce white text */
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7);
}
.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    color: var(--text-light) !important; /* Enforce white text */
    margin-bottom: calc(var(--spacing-unit) * 2);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 1px 1px 6px rgba(0, 0, 0, 0.6);
}
.hero-button {
    margin: 0.5rem;
}


/* Section Backgrounds */
.section-bg-light {
    background-color: var(--neutral-light);
    color: var(--text-dark);
}
.section-bg-dark {
    background-color: var(--neutral-darker);
    color: var(--text-light);
}
.section-bg-dark .card-title, .section-bg-dark .card-text, .section-bg-dark h3, .section-bg-dark h4, .section-bg-dark h5 {
    color: var(--text-light);
}
.section-bg-dark .card-text {
    color: rgba(255,255,255,0.85);
}
.section-bg-dark .card-title-dark, .section-bg-dark .card-text-dark { /* In case these specific classes are used on dark bg */
    color: var(--text-light) !important;
}

.section-bg-cta {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: var(--text-light);
}

/* Glassmorphism Card Style */
.glassmorphism-card {
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--glass-border-radius);
    box-shadow: var(--glass-shadow);
    padding: calc(var(--spacing-unit) * 1.5);
    transition: transform var(--transition-speed) var(--transition-timing), box-shadow var(--transition-speed) var(--transition-timing);
}

/* Glassmorphism Cards on Light Backgrounds */
.section-bg-light .glassmorphism-card,
.section-bg-cta .glassmorphism-card { /* CTA might have lighter overlay */
    background: var(--glass-bg-light-theme);
    border: 1px solid var(--glass-border-light-theme);
}
.section-bg-light .glassmorphism-card .card-title,
.section-bg-light .glassmorphism-card h3,
.section-bg-light .glassmorphism-card h4,
.section-bg-light .glassmorphism-card h5 {
    color: var(--text-dark-headings);
}
.section-bg-light .glassmorphism-card .card-text,
.section-bg-light .glassmorphism-card p {
    color: var(--text-dark);
}

/* Glassmorphism Cards on Dark Backgrounds */
.section-bg-dark .glassmorphism-card {
    background: var(--glass-bg-dark-theme);
    border: 1px solid var(--glass-border-dark-theme);
}
.section-bg-dark .glassmorphism-card .card-title,
.section-bg-dark .glassmorphism-card h3,
.section-bg-dark .glassmorphism-card h4,
.section-bg-dark .glassmorphism-card h5 {
    color: var(--text-light);
}
.section-bg-dark .glassmorphism-card .card-text,
.section-bg-dark .glassmorphism-card p {
    color: rgba(255,255,255,0.85);
}


/* General Card Styling (Bootstrap .card extended) */
.card {
    border: none; /* Remove Bootstrap border if using glassmorphism */
    display: flex; /* For vertical alignment of content */
    flex-direction: column; /* Stack image and body */
    height: 100%; /* Ensure cards in a row are same height */
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.card-image { /* Container for image */
    width: 100%;
    height: 220px; /* Fixed height for card images */
    overflow: hidden;
    border-top-left-radius: var(--glass-border-radius);
    border-top-right-radius: var(--glass-border-radius);
}

.card-image img.card-img-top {
    width: 100%;
    height: 100%;
    object-fit: cover; /* Crop and center image */
    transition: transform var(--transition-speed) var(--transition-timing);
}
.card:hover .card-image img.card-img-top {
    transform: scale(1.05);
}

.card-body {
    display: flex;
    flex-direction: column;
    justify-content: space-between; /* Pushes button to bottom if card-text is short */
    flex-grow: 1; /* Allows body to take remaining space */
    text-align: center; /* Center text content */
    padding: calc(var(--spacing-unit) * 1.2);
}

.card-title {
    font-size: clamp(1.2rem, 2.5vw, 1.4rem);
    font-weight: 700;
    margin-bottom: 0.75rem;
}
/* Title colors for default cards not inside specific section backgrounds */
.card-title-dark { color: var(--text-dark-headings); }
.card-text-dark { color: var(--text-dark); }


.card .btn {
    margin-top: auto; /* Pushes button to the bottom of card-body */
    align-self: center; /* Center button if it's not full-width */
}


/* Accordion Styling */
.accordion-item {
    margin-bottom: var(--spacing-unit) !important;
    border: none !important;
    border-radius: var(--glass-border-radius) !important;
    overflow: hidden; /* Ensures content respects border-radius */
}
.accordion-header .accordion-button {
    font-family: var(--font-primary);
    font-size: clamp(1.1rem, 2.2vw, 1.3rem);
    font-weight: 500;
    background-color: transparent; /* Handled by glassmorphism card */
    color: var(--text-dark-headings);
    border: none !important;
    box-shadow: none !important;
    border-radius: var(--glass-border-radius) !important;
}
.section-bg-dark .accordion-header .accordion-button {
    color: var(--text-light);
}
.accordion-button:not(.collapsed) {
    color: var(--primary-color);
    background-color: transparent !important;
}
.section-bg-dark .accordion-button:not(.collapsed) {
    color: var(--secondary-color);
}
.accordion-button::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23222222'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e") !important;
}
.section-bg-dark .accordion-button::after {
     background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23FFFFFF'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e") !important;
}
.accordion-button:not(.collapsed)::after {
    transform: rotate(-180deg);
}
.accordion-body {
    padding: calc(var(--spacing-unit) * 1.2);
    font-size: 0.95rem;
}

/* Carousel Styling */
.carousel-caption-custom {
    position: absolute;
    right: 10%;
    bottom: 10%;
    left: 10%;
    padding: 1.5rem;
    color: var(--text-light);
    text-align: left;
    max-width: 60%;
    border-radius: var(--glass-border-radius);
    background: rgba(0, 0, 0, 0.5); /* Darker for caption readability */
    backdrop-filter: blur(5px);
}
.carousel-caption-custom h5 {
    font-size: clamp(1.3rem, 2.8vw, 1.8rem);
    color: var(--text-light);
    font-family: var(--font-primary);
    margin-bottom: 0.5rem;
}
.carousel-caption-custom p {
    font-size: clamp(0.9rem, 1.8vw, 1rem);
    margin-bottom: 1rem;
    color: rgba(255,255,255,0.9);
}
.carousel-item img {
    object-fit: cover;
    min-height: 500px; /* Ensure carousel items have some height */
}
.carousel-indicators [data-bs-target] {
    background-color: var(--secondary-color);
    opacity: 0.7;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin: 0 5px;
}
.carousel-indicators .active {
    opacity: 1;
}
.carousel-control-prev-icon,
.carousel-control-next-icon {
    background-color: rgba(0,0,0,0.3);
    border-radius: 50%;
    padding: 1.2rem;
    background-size: 50%;
}

/* External Resources Section Link Cards */
#external-resources .card-title-dark a {
    color: var(--text-dark-headings);
    font-size: 1.1rem;
}
#external-resources .card-title-dark a:hover {
    color: var(--primary-color);
}
#external-resources .card-text-dark {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Press Section */
#press img {
    filter: grayscale(100%);
    opacity: 0.7;
    transition: filter var(--transition-speed) var(--transition-timing), opacity var(--transition-speed) var(--transition-timing);
    max-height: 40px; /* Control media logo size */
    width: auto;
}
#press .row:hover img {
    filter: grayscale(0%);
    opacity: 1;
}
#press p.fst-italic {
    font-size: 0.95rem;
    color: var(--text-muted);
}
#press cite {
    font-weight: 500;
    color: var(--text-dark);
}

/* Footer */
.footer-section {
    background-color: var(--neutral-darker);
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}
.footer-title {
    font-family: var(--font-primary);
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}
.footer-link {
    color: rgba(255,255,255,0.7);
    transition: color var(--transition-speed) var(--transition-timing);
    display: inline-block;
    padding: 0.2rem 0;
}
.footer-link:hover {
    color: var(--secondary-color);
    text-decoration: none;
}
.footer-section hr {
    border-color: rgba(255,255,255,0.15);
}
.footer-section .small {
    font-size: 0.85rem;
}

/* Special Page Styles */
/* For content on privacy.html, terms.html not to be hidden by fixed header */
.page-content-wrapper {
    padding-top: 3rem; /* Adjust as needed if header height changes */
    padding-bottom: 3rem;
}
.page-content-wrapper h1 {
    margin-bottom: 1.5rem;
    font-size: clamp(2rem, 4vw, 2.8rem);
}
.page-content-wrapper h2 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-size: clamp(1.5rem, 3vw, 2rem);
    color: var(--primary-color);
}


/* Success Page Specific Styling */
body.success-page-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    text-align: center;
    background-color: var(--neutral-light);
    padding: 2rem; /* Padding for content */
    padding-top: 0; /* Override body padding-top */
}
.success-page-body .glassmorphism-card {
    max-width: 600px;
    width: 100%;
}
.success-icon {
    font-size: 4rem;
    color: var(--accent-color-1);
    margin-bottom: 1rem;
}
.success-page-body h1 {
    color: var(--text-dark-headings);
}
.success-page-body p {
    color: var(--text-dark);
    font-size: 1.1rem;
}


/* Read More Link Style */
.read-more-link {
    font-family: var(--font-primary);
    font-weight: 500;
    color: var(--primary-color);
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    display: inline-block;
    margin-top: 0.5rem;
    transition: color var(--transition-speed) var(--transition-timing);
}
.read-more-link:hover {
    color: var(--button-primary-hover-bg);
    text-decoration: underline;
}
.section-bg-dark .read-more-link {
    color: var(--secondary-color);
}
.section-bg-dark .read-more-link:hover {
    color: var(--text-light);
}


/* Responsive Adjustments */
@media (max-width: 991.98px) {
    .navbar-nav {
        margin-top: 1rem;
        background: var(--glass-bg-dark-theme);
        border-radius: var(--glass-border-radius);
        padding: 1rem;
    }
    .nav-link {
        margin-left: 0;
        margin-right: 0;
        padding: 0.75rem 1rem !important;
    }
    .carousel-caption-custom {
        max-width: 85%;
        right: 7.5%;
        left: 7.5%;
        bottom: 5%;
        padding: 1rem;
    }
    .carousel-caption-custom h5 {
        font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    }
    .carousel-caption-custom p {
        font-size: clamp(0.8rem, 1.5vw, 0.9rem);
        margin-bottom: 0.5rem;
    }
    .hero-section {
        min-height: auto;
        padding-top: 100px;
        padding-bottom: 40px;
    }
}

@media (max-width: 767.98px) {
    body {
        padding-top: 70px; /* Adjust for potentially smaller header */
    }
    .hero-title {
        font-size: clamp(2.2rem, 8vw, 3rem);
    }
    .hero-subtitle {
        font-size: clamp(1rem, 3vw, 1.2rem);
    }
    .section-title {
        font-size: clamp(1.8rem, 6vw, 2.5rem);
    }
    .section-subtitle {
        font-size: clamp(1rem, 3.5vw, 1.2rem);
    }
    .carousel-caption-custom {
        position: relative;
        background: var(--glass-bg-dark-theme);
        color: var(--text-light);
        padding: 1rem;
        margin-top: -50px; /* Pulls caption over image slightly */
        z-index: 10;
        max-width: 90%;
        margin-left: auto;
        margin-right: auto;
    }
    .carousel-item img {
        min-height: 350px;
    }
    .footer-section .text-center, .footer-section .col-lg-4, .footer-section .col-lg-2, .footer-section .col-lg-3 {
        text-align: center !important;
    }
    .footer-section ul {
        padding-left: 0;
    }
}

/* Parallax effect for specific backgrounds if desired via JS,
   Simple CSS parallax:
.parallax-background {
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}
*/

/* AOS animation defaults */
[data-aos] {
    transition-property: transform, opacity;
}