/* Core Variables */
:root {
    --color-bg: #FFFFFF; /* Pure White */
    --color-surface: #F9F9F9; /* Very light grey */
    --color-text-main: #1C1C1E; /* Apple-grade Charcoal */
    --color-text-muted: #5A5A5C; /* Medium grey for less important text */
    --color-accent: #85B09A; /* Muted Cambridge Blue */
    --color-accent-hover: #6D9680; /* Darker Cambridge Blue for hover */
    --color-divider: #A0A0A0; /* Thin Silver */
    --font-primary: 'Avenir Next', 'Inter', sans-serif;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg);
    color: var(--color-text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-smooth);
}

/* Header & Nav */
.global-header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: #FFFFFF;
    border-bottom: 1px solid var(--color-divider);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
    color: var(--color-text-main);
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 2.5rem;
}

.main-nav a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-main);
    opacity: 0.7;
}

.main-nav a:hover {
    opacity: 1;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px; /* Offset for header */
    background-color: var(--color-bg);
}

.hero-container {
    position: relative;
    z-index: 10;
    max-width: 900px;
    margin: 0; /* Align left in container */
}

.headline {
    font-size: clamp(3rem, 5vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    color: var(--color-text-main);
}

.subheadline {
    font-size: 1.25rem;
    color: var(--color-text-main);
    opacity: 0.8;
    max-width: 700px;
    margin-bottom: 3rem;
    font-weight: 400;
}

/* Buttons */
.hero-actions {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--color-accent);
    color: #FFFFFF;
    border: 1px solid var(--color-accent);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(133, 176, 154, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-main);
    border: 1px solid var(--color-text-main);
}

.btn-secondary:hover {
    background-color: rgba(28, 28, 30, 0.05);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-text-main);
    border: 1px solid var(--color-divider);
}

.btn-outline:hover {
    border-color: var(--color-text-main);
    background-color: rgba(28, 28, 30, 0.03);
}

/* Manifesto Section */
.manifesto {
    padding: 8rem 0;
    background-color: var(--color-surface);
}

.manifesto-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.manifesto-image img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    /* High contrast, stark black and white */
    filter: grayscale(100%) contrast(1.2);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.15);
}

.manifesto-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
}

.manifesto-content p {
    font-size: 1.1rem;
    color: var(--color-text-main);
    opacity: 0.85;
    margin-bottom: 1.5rem;
}

.manifesto-content p:last-of-type {
    margin-bottom: 2rem;
}

/* Credentials */
.credential-tag {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-main);
    background: transparent;
    padding: 0.3rem 0;
    border-right: 1px solid var(--color-divider);
    padding-right: 1rem;
}

.credential-tag:last-child {
    border-right: none;
}

/* Footer */
.global-footer {
    padding: 4rem 0 2rem 0;
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-divider);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.footer-name {
    font-weight: 600;
    color: var(--color-text-main);
}

.footer-right {
    color: var(--color-text-main);
    font-weight: 500;
    opacity: 0.8;
}

.footer-right a {
    margin: 0 0.5rem;
}

.footer-right a:hover {
    opacity: 1;
    color: var(--color-accent);
}

.footer-disclaimer {
    text-align: center;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.slide-in-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.is-visible {
    opacity: 1;
    transform: translate(0);
}

/* Responsive */
@media (max-width: 992px) {
    .manifesto-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .manifesto-image {
        max-width: 600px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .headline {
        font-size: 2.5rem;
    }
    
    .main-nav {
        display: none;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }

    .footer-container {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
}