:root {
    --primary-red: #D32F2F;
    --primary-dark: #0A0A0A;
    --primary-white: #FFFFFF;
    --text-grey: #DDDDDD;
    /* Lighter for contrast on dark */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --font-heading: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    scroll-snap-type: y mandatory;
    /* KEYBOARD NAV REQUIREMENT */
}

body {
    font-family: var(--font-body);
    /* 1. THE DARK RED GRADIENT THEME (Full Screen Bleed) */
    background: radial-gradient(circle at center, #2b0505 0%, #000000 100%) fixed;
    color: var(--primary-white);
    line-height: 1.8;
    overflow-x: hidden;
    font-size: 22px;
}

/* TYPOGRAPHY */
h1,
h2,
h3,
h4,
h5 {
    font-family: var(--font-heading);
    font-weight: 800;
    line-height: 1.1;
    color: var(--primary-white);
}

h1 {
    font-size: 110px;
    letter-spacing: -4px;
    margin-bottom: 50px;
}

h2 {
    font-size: 100px;
    /* MANDATORY 100px */
    letter-spacing: -3px;
    font-weight: 900;
    margin-bottom: 60px;
    text-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

h3 {
    font-size: 60px;
    margin-top: 100px;
    margin-bottom: 50px;
    font-weight: 800;
    color: var(--primary-red);
}

h4 {
    font-size: 32px;
    margin-bottom: 15px;
    color: white;
}

p {
    margin-bottom: 40px;
    max-width: 900px;
    color: var(--text-grey);
    font-weight: 300;
    font-size: 22px;
}

/* 2. VERTICAL NARRATIVE LAYOUT */
.section {
    width: 100%;
    /* Massive Spacing */
    padding: 300px 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    scroll-snap-align: start;
    /* KEYBOARD NAV REQUIREMENT */
    position: relative;
    border-bottom: 1px solid rgba(255, 255, 255, 0.02);
}

.container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding-left: 80px;
    /* 3. THE RED ANCHOR LINE */
    border-left: 12px solid var(--primary-red);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* SECTION NUMBER */
.section-num {
    font-size: 250px;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.03);
    line-height: 1;
    position: absolute;
    top: 50px;
    left: 20px;
    z-index: -1;
    user-select: none;
}

/* COMPONENT: GIANT IMAGES */
.cinematic-image {
    width: 100%;
    max-height: 700px;
    object-fit: cover;
    border-radius: 40px;
    box-shadow: 0 50px 100px rgba(0, 0, 0, 0.6);
    margin: 60px 0 100px 0;
    border: 1px solid var(--glass-border);
}

/* COMPLEX COMPONENT: STRIPS / LISTS */
.strip-container {
    display: flex;
    flex-direction: column;
    gap: 30px;
    width: 100%;
    margin-bottom: 80px;
}

.strip-card {
    background: var(--glass-bg);
    padding: 50px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 40px;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease;
}

.strip-card:hover {
    transform: translateX(10px);
    background: rgba(255, 255, 255, 0.05);
}

.strip-icon {
    font-size: 60px;
    min-width: 80px;
    text-align: center;
}

/* COMPONENT: RESULT BANNER (Black Hole) */
.result-banner {
    width: 100%;
    background: #000;
    padding: 100px;
    text-align: center;
    border-radius: 40px;
    margin: 100px 0;
    border: 1px solid rgba(211, 47, 47, 0.3);
    box-shadow: 0 0 80px rgba(211, 47, 47, 0.1);
}

.giant-number {
    font-size: 200px;
    /* MANDATORY 200px */
    font-weight: 900;
    color: var(--primary-red);
    line-height: 1;
    display: block;
    margin: 30px 0;
    text-shadow: 0 0 50px rgba(211, 47, 47, 0.8);
}

/* COMPONENT: TABLES */
.compare-table {
    width: 100%;
    border-collapse: collapse;
    margin: 60px 0;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 20px;
    overflow: hidden;
}

.compare-table th,
.compare-table td {
    padding: 30px;
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
}

.compare-table th {
    font-size: 24px;
    color: var(--primary-red);
}

.compare-table td {
    font-size: 22px;
    color: var(--text-grey);
}

/* COMPONENT: VISUAL CHIPS & SCREEN STACKS */
.media-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    margin-top: 40px;
}

.media-chip {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px 30px;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 600;
    color: white;
}

.screen-stack {
    background: var(--glass-bg);
    padding: 40px;
    border-radius: 30px;
    border: 1px solid var(--glass-border);
    margin-bottom: 60px;
}

.screen-item {
    background: rgba(0, 0, 0, 0.3);
    padding: 25px;
    margin-bottom: 15px;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
}

/* HEADER & NAV */
header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 40px 60px;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    background: transparent;
}

.logo {
    font-size: 32px;
    font-weight: 900;
    letter-spacing: 2px;
}

.nav-links a {
    text-decoration: none;
    color: white;
    margin-left: 30px;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 14px;
    letter-spacing: 2px;
    opacity: 0.8;
}

/* BTN */
.btn {
    display: inline-block;
    background: var(--primary-red);
    color: white;
    padding: 30px 80px;
    font-size: 24px;
    font-weight: 800;
    border-radius: 100px;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 2px;
    box-shadow: 0 20px 60px rgba(211, 47, 47, 0.4);
    transition: transform 0.2s;
}

.btn:hover {
    transform: scale(1.05);
}

.btn-secondary {
    background: transparent;
    border: 2px solid white;
    box-shadow: none;
}