/* style.css */

/* --- 1. CSS Variables & Root Setup --- */
:root {
    /* Color Palette (Neutral with Dynamic Accents) */
    --color-background: #f8f9fa;
    --color-background-alt: #ffffff;
    --color-surface: #ffffff;
    --color-text-primary: #343a40;
    --color-text-secondary: #6c757d;
    --color-headings: #212529;
    --color-white: #FFFFFF;
    --color-border: #dee2e6;

    /* Dynamic Gradient & Primary Accent */
    --color-primary: #005f73;
    --color-primary-dark: #004c5c;
    --color-secondary: #0a9396;
    --gradient-primary: linear-gradient(135deg, #0a9396 0%, #005f73 100%);
    --gradient-primary-hover: linear-gradient(135deg, #005f73 0%, #0a9396 100%);

    /* Typography */
    --font-family-headings: 'Playfair Display', serif;
    --font-family-body: 'Source Sans Pro', sans-serif;
    --font-weight-normal: 400;
    --font-weight-bold: 700;
    --font-weight-black: 900;
    
    /* Spacing & Sizing */
    --spacing-xs: 0.5rem;   /* 8px */
    --spacing-sm: 1rem;     /* 16px */
    --spacing-md: 1.5rem;   /* 24px */
    --spacing-lg: 2.5rem;   /* 40px */
    --spacing-xl: 4rem;     /* 64px */
    --header-height: 80px;

    /* Effects */
    --box-shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);
    --box-shadow-md: 0 10px 20px rgba(0, 0, 0, 0.07), 0 3px 6px rgba(0, 0, 0, 0.05);
    --border-radius: 8px;
    --transition-fast: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* --- 2. Global Styles & Resets --- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 100%; /* 16px */
}

body {
    font-family: var(--font-family-body);
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul {
    list-style: none;
}

/* --- 3. Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-headings);
    color: var(--color-headings);
    font-weight: var(--font-weight-bold);
    line-height: 1.3;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.1);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); font-weight: var(--font-weight-black); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 1.8rem); }
h4 { font-size: clamp(1.2rem, 2.5vw, 1.4rem); }

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    text-align: center;
    max-width: 700px;
    margin: -2rem auto 2.5rem;
    font-size: 1.1rem;
    color: var(--color-text-secondary);
}

/* --- 4. Layout & Helpers --- */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.columns {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    align-items: center;
}

.column {
    flex: 1 1 300px;
}

.column.is-two-thirds {
    flex-basis: 66.66%;
}

.content-section {
    padding: var(--spacing-xl) 0;
}

.alt-background {
    background-color: var(--color-background-alt);
}

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

.image-container {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow-md);
}

/* --- 5. Header & Navigation --- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    height: var(--header-height);
    display: flex;
    align-items: center;
    transition: background-color 0.4s ease, box-shadow 0.4s ease;
    background-color: transparent;
}

.site-header.scrolled {
    background-color: rgba(255, 255, 255, 0.9);
    box-shadow: var(--box-shadow-sm);
    backdrop-filter: blur(10px);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-family: var(--font-family-headings);
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    text-decoration: none;
}

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

.navbar-links {
    display: flex;
    gap: var(--spacing-md);
}

.navbar-links a {
    color: var(--color-white);
    font-weight: var(--font-weight-bold);
    text-decoration: none;
    position: relative;
    padding: var(--spacing-xs) 0;
}

.site-header.scrolled .navbar-links a {
    color: var(--color-text-primary);
}

.navbar-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s cubic-bezier(0.19, 1, 0.22, 1);
}

.navbar-links a:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.burger-menu {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.burger-menu span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-white);
    margin: 5px 0;
    transition: var(--transition-fast);
}

.site-header.scrolled .burger-menu span {
    background-color: var(--color-text-primary);
}


/* --- 6. Global Component Styles --- */

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.9rem 2rem;
    font-family: var(--font-family-body);
    font-weight: var(--font-weight-bold);
    font-size: 1rem;
    text-align: center;
    text-decoration: none;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
    box-shadow: var(--box-shadow-sm);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

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

.btn-primary:hover {
    color: var(--color-white);
    box-shadow: var(--box-shadow-md);
    transform: translateY(-3px);
    background: var(--gradient-primary-hover);
}

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

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-3px);
}

.btn-text {
    background: none;
    border: none;
    color: var(--color-secondary);
    font-weight: var(--font-weight-bold);
    cursor: pointer;
    padding: 0;
    text-decoration: underline;
}

.btn-text:hover {
    color: var(--color-primary);
}


/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.card {
    background-color: var(--color-surface);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-md);
    overflow: hidden;
    transition: var(--transition-fast);
    display: flex;
    flex-direction: column;
    text-align: center;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 30px rgba(0, 0, 0, 0.1);
}

.card-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.card:hover .card-image img {
    transform: scale(1.05);
}

.card-content {
    padding: var(--spacing-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.card-title {
    margin-bottom: var(--spacing-xs);
}

.card-subtitle {
    color: var(--color-secondary);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
}

/* Forms */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    position: relative;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-family-body);
    font-size: 1rem;
    background-color: var(--color-background);
    transition: var(--transition-fast);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 95, 115, 0.2);
}

.contact-form label {
    position: absolute;
    top: 1rem;
    left: 1rem;
    color: var(--color-text-secondary);
    pointer-events: none;
    transition: var(--transition-fast);
}

.contact-form input:focus + label,
.contact-form textarea:focus + label,
.contact-form input:not(:placeholder-shown) + label,
.contact-form textarea:not(:placeholder-shown) + label {
    top: -0.75rem;
    left: 0.75rem;
    font-size: 0.8rem;
    background-color: var(--color-background);
    padding: 0 0.25rem;
    color: var(--color-primary);
}

/* Accordion */
.accordion-item {
    border-bottom: 1px solid var(--color-border);
}

.accordion-header {
    width: 100%;
    background: none;
    border: none;
    text-align: left;
    padding: var(--spacing-md);
    font-size: 1.2rem;
    font-family: var(--font-family-headings);
    cursor: pointer;
    position: relative;
    color: var(--color-headings);
}

.accordion-header::after {
    content: '+';
    position: absolute;
    right: var(--spacing-md);
    font-size: 1.5rem;
    transition: transform 0.3s ease;
    color: var(--color-primary);
}

.accordion-item.active .accordion-header::after {
    transform: rotate(45deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.accordion-content p {
    padding: 0 var(--spacing-md) var(--spacing-md);
}


/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    align-items: center;
    justify-content: center;
}

.modal.is-open {
    display: flex;
}

.modal-content {
    background-color: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    max-width: 600px;
    width: 90%;
    text-align: center;
    position: relative;
    animation: modal-fade-in 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 2rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-secondary);
}

.modal-img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto var(--spacing-md);
    border: 4px solid var(--color-primary);
}

@keyframes modal-fade-in {
    from { opacity: 1; transform: translateY(-20px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

/* Toggle Switch */
.toggle-switch-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.switch input { display: none; }

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px; width: 26px;
    left: 4px; bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background: var(--gradient-primary);
}

input:checked + .slider:before {
    transform: translateX(26px);
}


/* --- 7. Section Specific Styles --- */

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--color-white);
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed; /* Simple Parallax */
}

.hero-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.7));
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-title {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    opacity: 1.9;
}

/* Case Studies */
.case-study-card .card-content {
    text-align: left;
    align-items: flex-start;
}

/* Contact Section */
.contact-info p {
    margin-bottom: var(--spacing-sm);
}
.contact-info strong {
    color: var(--color-headings);
}

/* External Resources Section */
.resource-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 800px;
    margin: 0 auto;
}
.resource-list li a {
    display: block;
    background-color: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-sm);
    font-weight: var(--font-weight-bold);
    text-decoration: none;
    color: var(--color-text-primary);
}
.resource-list li a:hover {
    transform: translateX(10px);
    box-shadow: var(--box-shadow-md);
    color: var(--color-primary);
}

/* Footer */
.site-footer {
    background-color: var(--color-headings);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-xl) 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-column h4 {
    color: var(--color-white);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
}

.footer-column ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-column a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.footer-column a:hover {
    color: var(--color-white);
    text-decoration: underline;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md) 0;
    text-align: center;
    font-size: 0.9rem;
}

/* --- 8. Page-Specific Styles --- */
.page-success body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.static-page-content {
    padding-top: calc(var(--header-height) + var(--spacing-xl));
    padding-bottom: var(--spacing-xl);
}
.static-page-content h1 {
    margin-bottom: var(--spacing-md);
}
.static-page-content p, .static-page-content li {
    margin-bottom: var(--spacing-sm);
}
.static-page-content ul {
    list-style: disc;
    padding-left: var(--spacing-md);
}

/* --- 9. Animation & Effects --- */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

/* For GSAP ScrollTrigger */
.animate__animated {
    opacity: 1;
}

/* --- 10. Media Queries --- */
@media (max-width: 768px) {
    .navbar-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background-color: var(--color-surface);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: right 0.5s cubic-bezier(0.23, 1, 0.32, 1);
        box-shadow: -10px 0 20px rgba(0,0,0,0.1);
    }
    .navbar-menu.is-active {
        right: 0;
    }

    .navbar-links {
        flex-direction: column;
        text-align: center;
    }
    
    .navbar-links a,
    .site-header.scrolled .navbar-links a {
        color: var(--color-text-primary);
        font-size: 1.5rem;
    }

    .burger-menu {
        display: block;
    }

    .burger-menu.is-active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .burger-menu.is-active span:nth-child(2) {
        opacity: 1;
    }
    .burger-menu.is-active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .site-header.scrolled .burger-menu.is-active span,
    .burger-menu.is-active span {
        background-color: var(--color-text-primary);
    }

    .columns {
        flex-direction: column;
    }

    .column.is-two-thirds {
        flex-basis: auto;
    }
}