:root {
    /* Samsung Brand Colors */
    --samsung-blue: #034EA2;
    --samsung-black: #000000;
    --samsung-white: #FFFFFF;
    --samsung-accent: #1428a0;
    --samsung-light-blue: #EBF2FA;
    
    /* Tier Colors */
    --tier-royal: #FFD700; /* Gold */
    --tier-diamond: #B9F2FF; /* Diamond Blue */
    --tier-sapphire: #0F52BA; /* Sapphire Blue */
    
    /* System Colors */
    --wf-bg: #F8F9FA;
    --wf-surface: #FFFFFF;
    --wf-border: #E0E0E0;
    --wf-text-main: #000000;
    --wf-text-secondary: #5F6368;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 48px;
    
    --border-radius: 8px;
    --shadow: 0 4px 12px rgba(0,0,0,0.08);
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'SamsungOne', 'Segoe UI', Roboto, -apple-system, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--wf-bg);
    color: var(--wf-text-main);
    line-height: 1.5;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4 {
    margin: 0;
    font-weight: 700;
}

.text-blue { color: var(--samsung-blue); }
.text-secondary { color: var(--wf-text-secondary); }

/* Layout Components */
.container {
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.navbar {
    background: var(--samsung-white);
    border-bottom: 1px solid var(--wf-border);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.samsung-logo {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: -1px;
    color: var(--samsung-blue);
}

.program-tag {
    background: var(--samsung-blue);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--samsung-blue) 0%, #001e44 100%);
    color: white;
    padding: var(--spacing-xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.hero p {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

/* Card System */
.card {
    background: var(--wf-surface);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--wf-border);
    overflow: hidden;
}

.section-title {
    margin-bottom: var(--spacing-lg);
    font-size: 2rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.section-icon {
    width: 40px;
    height: 40px;
    background: var(--samsung-light-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--samsung-blue);
}

/* Grids */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

/* Tier Cards */
.tier-card {
    text-align: center;
    border-top: 6px solid transparent;
}

.tier-card.royal { border-color: var(--tier-royal); }
.tier-card.diamond { border-color: var(--tier-diamond); }
.tier-card.sapphire { border-color: var(--tier-sapphire); }

.tier-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Tables */
.table-container {
    width: 100%;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-md);
}

th {
    background: var(--samsung-light-blue);
    color: var(--samsung-blue);
    text-align: left;
    padding: var(--spacing-md);
    font-weight: 600;
}

td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--wf-border);
}

/* Benefits List */
.benefit-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    align-items: flex-start;
}

.benefit-bullet {
    width: 24px;
    height: 24px;
    background: var(--samsung-light-blue);
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--samsung-blue);
    font-size: 14px;
    font-weight: bold;
}

/* Footer & Utils */
.footer {
    background: var(--samsung-black);
    color: white;
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
}

.placeholder-image {
    background: #e0e0e0;
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 24px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--samsung-accent);
}

.badge {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
}

.badge-royal { background: #FFF9E6; color: #B8860B; border: 1px solid #FFD700; }
.badge-diamond { background: #F0FBFF; color: #007791; border: 1px solid #B9F2FF; }
.badge-sapphire { background: #F0F4FF; color: #0F52BA; border: 1px solid #0F52BA; }

/* Dashboard Tabs */
.tabs {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--wf-border);
}

.tab {
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    font-weight: 600;
    color: var(--wf-text-secondary);
    border-bottom: 3px solid transparent;
}

.tab.active {
    color: var(--samsung-blue);
    border-bottom-color: var(--samsung-blue);
}