/* ============================================
   Ultimate Store - Modern Chat Interface
   Buyers are Kings! 
   Color Palette: Deep Space Blue Theme
   ============================================ */

:root {
    --ink-black: #00171F;
    --deep-space: #003459;
    --cerulean: #007EA7;
    --fresh-sky: #00A8E8;
    --white: #FFFFFF;

    --primary: #007EA7;
    --primary-dark: #003459;
    --secondary: #00A8E8;
    --accent: #00A8E8;
    --success: #10b981;
    --warning: #f59e0b;
    --bg-gradient-start: #003459;
    --bg-gradient-end: #00171F;
    --glass-bg: rgba(255, 255, 255, 0.98);
    --glass-border: rgba(255, 255, 255, 0.3);
    --text-primary: #00171F;
    --text-secondary: #6b7280;
    --shadow-soft: 0 4px 20px rgba(0, 23, 31, 0.15);
    --shadow-strong: 0 8px 32px rgba(0, 23, 31, 0.25);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

/* App Container */
.app-container {
    width: 100%;
    max-width: 480px;
    height: 90vh;
    max-height: 800px;
    background: var(--glass-bg);
    border-radius: 24px;
    box-shadow: var(--shadow-strong);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    position: relative;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: 24px 20px;
    text-align: center;
    color: white;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 8px;
}

.logo-icon {
    font-size: 28px;
    animation: bounce 2s infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-5px);
    }
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.tagline {
    font-size: 14px;
    opacity: 0.9;
    font-weight: 400;
}

.seller-link {
    display: inline-block;
    margin-top: 10px;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    text-decoration: none;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.seller-link:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}