/* ==========================================================================
   Loft of Goods - B2B Landing Page
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties
   -------------------------------------------------------------------------- */
:root {
    /* Colors */
    --white: #FFFFFF;
    --off-white: #FAFBFC;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    --black: #0A0A0A;
    
    /* Accent colors */
    --accent: #0A0A0A;
    --accent-hover: #262626;
    --accent-light: rgba(10, 10, 10, 0.04);
    
    /* Glass effect */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.8);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    
    /* Typography */
    --font-display: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    
    /* Layout */
    --container-max: 480px;
    --container-padding: clamp(1.5rem, 5vw, 2.5rem);
    
    /* Effects */
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 24px 48px rgba(0, 0, 0, 0.1);
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--off-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    min-height: 100dvh;
}

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

a {
    color: inherit;
    text-decoration: none;
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.landing {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: var(--space-xl) 0;
}

.container {
    max-width: var(--container-max);
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--container-padding);
    position: relative;
    z-index: 1;
}

/* --------------------------------------------------------------------------
   Background Elements
   -------------------------------------------------------------------------- */
.bg-pattern {
    position: fixed;
    inset: 0;
    background: 
        linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, transparent 50%),
        linear-gradient(225deg, rgba(168, 85, 247, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.bg-gradient {
    position: fixed;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(120, 119, 198, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 50% 120%, rgba(99, 102, 241, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

/* --------------------------------------------------------------------------
   Reveal Animation
   -------------------------------------------------------------------------- */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal:nth-child(1) { transition-delay: 0s; }
.reveal:nth-child(2) { transition-delay: 0.1s; }
.reveal:nth-child(3) { transition-delay: 0.2s; }
.reveal:nth-child(4) { transition-delay: 0.3s; }
.reveal:nth-child(5) { transition-delay: 0.4s; }

/* --------------------------------------------------------------------------
   Header & Logo
   -------------------------------------------------------------------------- */
.header {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.logo {
    max-width: 160px;
    height: auto;
    margin: 0 auto;
    opacity: 0.9;
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 1.875rem);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-xs);
    letter-spacing: -0.03em;
    line-height: 1.3;
}

.hero-subtitle {
    font-size: clamp(0.9rem, 2vw, 1rem);
    color: var(--gray-400);
    font-weight: 500;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   Invitation Section
   -------------------------------------------------------------------------- */
.invitation {
    margin-bottom: var(--space-md);
}

.invitation-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: var(--space-md);
    box-shadow: var(--glass-shadow);
    border: 1px solid var(--glass-border);
}

.invitation-card h2 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-xs);
    text-align: center;
    letter-spacing: -0.02em;
}

.invitation-text {
    text-align: center;
    color: var(--gray-500);
    margin-bottom: var(--space-md);
    line-height: 1.6;
    font-size: 0.9rem;
}

.benefits-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.benefits-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--white);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.benefits-list li:hover {
    border-color: var(--gray-200);
    transform: translateX(4px);
}

.benefit-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-700) 100%);
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.benefit-icon svg {
    width: 12px;
    height: 12px;
    stroke: var(--white);
    stroke-width: 2.5;
}

.benefits-list span:last-child {
    font-size: 0.875rem;
    color: var(--gray-700);
    font-weight: 500;
}

/* --------------------------------------------------------------------------
   QR Code Section
   -------------------------------------------------------------------------- */
.qr-section {
    margin-bottom: var(--space-lg);
}

.qr-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: var(--space-md);
    box-shadow: var(--glass-shadow);
    border: 1px solid var(--glass-border);
    text-align: center;
}

.qr-card h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-sm);
    letter-spacing: -0.01em;
}

.qr-wrapper {
    display: inline-flex;
    padding: var(--space-sm);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.qr-wrapper:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.qr-code {
    width: 140px;
    height: 140px;
    border-radius: var(--radius-sm);
}

.qr-instruction {
    font-size: 0.8rem;
    color: var(--gray-400);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

/* --------------------------------------------------------------------------
   Button
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.625rem;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    outline: none;
    text-decoration: none;
    letter-spacing: -0.01em;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--black) 100%);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.btn-icon {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.btn:hover .btn-icon {
    transform: translateX(3px);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
    text-align: center;
    padding-top: var(--space-md);
}

.footer p {
    font-size: 0.75rem;
    color: var(--gray-400);
    letter-spacing: 0.02em;
}

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */
@media (max-width: 640px) {
    .landing {
        padding: var(--space-md) 0;
    }
    
    .logo {
        max-width: 130px;
    }
    
    .invitation-card,
    .qr-card {
        padding: var(--space-sm) var(--space-md);
    }
    
    .qr-code {
        width: 120px;
        height: 120px;
    }
    
    .btn {
        width: 100%;
    }
}

@media (max-width: 380px) {
    .hero-title {
        font-size: 1.25rem;
    }
    
    .qr-code {
        width: 110px;
        height: 110px;
    }
    
    .benefits-list li {
        padding: 0.625rem 0.75rem;
    }
}

/* --------------------------------------------------------------------------
   Print Styles
   -------------------------------------------------------------------------- */
@media print {
    .bg-pattern,
    .bg-gradient {
        display: none;
    }
    
    .landing {
        padding: 0;
    }
    
    .invitation-card,
    .qr-card {
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }
}

/* --------------------------------------------------------------------------
   Reduced Motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    
    .btn:hover {
        transform: none;
    }
    
    .btn:hover .btn-icon {
        transform: none;
    }
}