/* =========================================
   CASTLEBAY DESIGN SYSTEM
   ========================================= */

:root {
    /* --- Color Palette --- */
    /* Primary: Deep Ocean Blue (Trust, Stability) */
    --color-primary: #0a2342;
    --color-primary-light: #1c3d6e;
    --color-primary-dark: #05162b;

    /* Secondary: Slate Grey (Industrial, Semiconductor) */
    --color-secondary: #64748b;
    --color-secondary-light: #94a3b8;
    --color-secondary-dark: #334155;

    /* Accent: Muted Gold (Premium, Value) */
    --color-accent: #c5a059;
    --color-accent-hover: #d4b06a;

    /* Neutrals */
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-text-inverted: #ffffff;
    --color-background: #f8fafc;
    --color-surface: #ffffff;
    --color-border: #e2e8f0;

    /* --- Typography --- */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;

    /* --- Spacing --- */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-24: 6rem;

    /* --- Shadows --- */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* --- Transitions --- */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
}

/* =========================================
   RESET & BASE STYLES
   ========================================= */

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

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

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

p {
    margin-bottom: var(--space-4);
}

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

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

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

ul {
    list-style: none;
}

/* =========================================
   UTILITIES
   ========================================= */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.section {
    padding: var(--space-16) 0;
}

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

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

.text-accent {
    color: var(--color-accent);
}

.bg-primary {
    background-color: var(--color-primary);
    color: var(--color-text-inverted);
}

.bg-surface {
    background-color: var(--color-surface);
}

.flex {
    display: flex;
}

.justify-between {
    justify-content: space-between;
}

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

.grid {
    display: grid;
}

.gap-4 {
    gap: var(--space-4);
}

.gap-8 {
    gap: var(--space-8);
}

/* =========================================
   COMPONENTS
   ========================================= */

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: var(--space-3) var(--space-6);
    border-radius: 4px;
    font-weight: 600;
    text-align: center;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--color-text-inverted);
    color: var(--color-text-inverted);
}

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

/* --- Header & Navigation --- */
header {
    background-color: var(--color-surface);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

.logo span {
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    gap: var(--space-8);
}

.nav-links a {
    font-weight: 500;
    color: var(--color-secondary-dark);
}

.nav-links a.active,
.nav-links a:hover {
    color: var(--color-primary);
}

/* --- Hero Section --- */
.hero {
    background: linear-gradient(rgba(10, 35, 66, 0.8), rgba(10, 35, 66, 0.8)), url('../images/hero-bg.png');
    background-size: cover;
    background-position: center;
    color: var(--color-text-inverted);
    padding: var(--space-24) 0;
    text-align: center;
}

.hero h1 {
    color: var(--color-text-inverted);
    font-size: var(--text-4xl);
    margin-bottom: var(--space-6);
}

.hero p {
    font-size: var(--text-xl);
    max-width: 700px;
    margin: 0 auto var(--space-8);
    color: var(--color-secondary-light);
}

/* --- Cards --- */
.card {
    background-color: var(--color-surface);
    border-radius: 8px;
    padding: var(--space-8);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal);
    border-top: 4px solid var(--color-accent);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.card h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-4);
}

/* --- Footer --- */
footer {
    background-color: var(--color-primary-dark);
    color: var(--color-secondary-light);
    padding: var(--space-12) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-column h4 {
    color: var(--color-text-inverted);
    margin-bottom: var(--space-4);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-8);
    text-align: center;
    font-size: var(--text-sm);
}

/* --- Responsive Adjustments --- */
@media (max-width: 768px) {
    .hero h1 {
        font-size: var(--text-3xl);
    }

    .grid {
        grid-template-columns: 1fr;
    }

    .nav-links {
        display: none;
    }


    /* Mobile menu implementation needed if complex */
}

/* =========================================
   VISITOR COUNTER
   ========================================= */
#visitor-counter {
    position: fixed;
    bottom: var(--space-4);
    right: var(--space-4);
    background-color: rgba(10, 35, 66, 0.9);
    /* Primary color with opacity */
    color: var(--color-text-inverted);
    padding: var(--space-2) var(--space-4);
    border-radius: 20px;
    font-size: var(--text-sm);
    font-weight: 600;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    display: flex;
    /* overridden by inline style initially */
    align-items: center;
    gap: var(--space-2);
    border: 1px solid var(--color-accent);
    backdrop-filter: blur(4px);
}

#visitor-counter .label {
    text-transform: uppercase;
    font-size: var(--text-xs);
    opacity: 0.8;
    letter-spacing: 0.05em;
}

#visitor-count {
    color: var(--color-accent);
    font-family: var(--font-heading);
    font-weight: 700;
}