:root {
    /* Main Group Colors */
    --color-primary: #0a192f;
    /* Navy Blue */
    --color-accent-gold: #d4af37;

    /* Transactions Brand (Corporate) */
    --color-transactions: #1b2a4e;
    --color-transactions-accent: #d4af37;

    /* Graphics Brand (Creative) */
    --color-graphics: #6c5ce7;
    --color-graphics-accent: #a29bfe;

    /* DataHub Brand (Tech) */
    --color-datahub: #0984e3;
    --color-datahub-accent: #00d2ff;

    /* Neutrals */
    --color-white: #ffffff;
    --color-light-grey: #f8f9fa;
    --color-text-dark: #333333;
    --color-text-light: #666666;
    --color-border: #e0e0e0;

    /* Typography */
    --font-head: 'Poppins', sans-serif;
    --font-body: 'Open Sans', sans-serif;
    --font-ar-head: 'Cairo', sans-serif;
    --font-ar-body: 'Tajawal', sans-serif;

    /* Spacing */
    --container-width: 1200px;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;

    /* Shadows */
    --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.1);
    --transition: 0.3s ease;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--color-white);
    color: var(--color-text-dark);
    line-height: 1.6;
}

h1,
h2,
h3 {
    font-family: var(--font-head);
    color: var(--color-primary);
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

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

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

/* Group Hub Styles */
.hub-hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(rgba(10, 25, 47, 0.9), rgba(10, 25, 47, 0.85)), url('../images/hub-bg.jpg');
    background-size: cover;
    background-position: center;
    color: white;
    padding: var(--spacing-lg) 0;
}

.brand-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    width: 100%;
    margin-top: var(--spacing-lg);
}

.brand-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: var(--spacing-md);
    transition: transform var(--transition), background var(--transition);
    cursor: pointer;
    text-align: center;
}

.brand-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.1);
}

.brand-card h2 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.brand-card p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1.5rem;
}

.brand-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.btn-enter {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 30px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

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

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

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

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

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

/* Common Section Styles */
.section-padding {
    padding: 5rem 0;
}

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

/* Contact Form Styles */
.contact-section {
    background: var(--color-primary);
    color: white;
    padding: 5rem 0;
}

.contact-container {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    padding: 3rem;
    border-radius: 20px;
    max-width: 600px;
    margin: 3rem auto;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--color-accent-gold);
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: white;
    font-family: inherit;
    font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent-gold);
    background: rgba(255, 255, 255, 0.15);
}

.submit-btn {
    width: 100%;
    padding: 1.2rem;
    background: var(--color-accent-gold);
    color: var(--color-primary);
    border: none;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.3);
}

/* Page Header Utility */
.brand-page-header {
    background: var(--color-primary);
    padding: 2rem 0;
    margin-bottom: 3rem;
}

/* RTL Adjustments for Forms */
[dir="rtl"] .form-group {
    text-align: right;
}

/* Hub Hero Dynamic Background */
.hub-hero {
    position: relative;
    overflow: hidden;
}

.hub-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(212, 175, 55, 0.1) 0%, transparent 70%);
    z-index: 0;
}

.hub-hero .container {
    position: relative;
    z-index: 1;
}