/* News for Business - Design System & Styles */

:root {
    /* Primary Palette - Reverted to Screen.png Aesthetic */
    --color-obsidian: #121212;
    --color-charcoal: #18181b;
    --color-silver: #E2E2E2;
    --color-emerald-vibrant: #00C853;
    --color-emerald-deep: #004D40;
    --color-slate-gray: #71717A;
    --color-border-soft: rgba(226, 226, 226, 0.1);

    /* Semantic Colors */
    --bg-primary: var(--color-obsidian);
    --bg-secondary: #0a0a0a;
    --text-primary: var(--color-silver);
    --text-secondary: var(--color-slate-gray);
    --accent-color: var(--color-emerald-vibrant);
    --border-color: var(--color-border-soft);

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 8.75rem;
}

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

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
.font-heading {
    font-family: 'Playfair Display', 'Inter', serif;
    font-weight: 500;
    line-height: 1;
    color: white;
    letter-spacing: -0.02em;
}

h1 {
    font-style: normal;
}

h3 {
    font-style: italic;
}

/* Layout Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: var(--space-md);
    padding-right: var(--space-md);
}

.section-padding {
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-2xl);
}

/* UI Components */

/* Announcement Bar */
.announcement-bar {
    background-color: var(--color-obsidian);
    color: var(--color-ivory-white);
    padding: var(--space-xs) 0;
    text-align: center;
    font-size: 12px;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.announcement-bar a {
    color: var(--color-mint-signal);
    text-decoration: none;
    margin-left: var(--space-xs);
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(250, 250, 247, 0.8);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    padding: var(--space-sm) 0;
    transition: all 0.3s ease;
}

.site-header.scrolled {
    padding: var(--space-xs) 0;
    background-color: var(--color-ivory-white);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-decoration: none;
    color: var(--color-obsidian);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    width: 4px;
    height: 24px;
    background-color: var(--accent-color);
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--space-lg);
}

.main-nav a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s ease;
}

.main-nav a:hover {
    color: var(--accent-color);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background-color: #1d4ed8;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

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

.btn-secondary:hover {
    background-color: var(--color-soft-stone);
}

/* Hero Section */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    min-height: 70vh;
}

.hero-content h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: var(--space-md);
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    max-width: 540px;
}

.hero-visual {
    background: var(--color-soft-stone);
    border-radius: 8px;
    padding: var(--space-md);
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Trust Bar */
.trust-bar {
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: var(--space-lg) 0;
    margin-top: var(--space-2xl);
    text-align: center;
}

.trust-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    display: block;
}

.logo-grid {
    display: flex;
    justify-content: space-between;
    align-items: center;
    opacity: 0.6;
    filter: grayscale(1);
}

/* Cards & Grid */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.card {
    padding: var(--space-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.card:hover {
    border-color: var(--accent-color);
    transform: translateY(-4px);
}

/* Animations - Data Pulse */
@keyframes pulse-signal {
    0% {
        transform: scale(0.95);
        opacity: 0.5;
    }

    50% {
        transform: scale(1.05);
        opacity: 1;
    }

    100% {
        transform: scale(0.95);
        opacity: 0.5;
    }
}

.signal-dot {
    width: 8px;
    height: 8px;
    background-color: var(--color-mint-signal);
    border-radius: 50%;
    display: inline-block;
    animation: pulse-signal 2s infinite ease-in-out;
}

/* Responsive Adjustments */
@media (max-width: 1024px) {
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content p {
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 768px) {
    .card-grid {
        grid-template-columns: 1fr;
    }

    .main-nav {
        display: none;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }
}