/* ============================================
   KEETSCARDS DESIGN SYSTEM
   ============================================ */

/* CSS Variables - Design Tokens */
:root {
    /* Colors */
    --white: #ffffff;
    --off-white: #f8fafc;
    --gray-50: #f1f5f9;
    --gray-100: #e2e8f0;
    --gray-200: #cbd5e1;
    --gray-300: #a8b5c4;
    --gray-400: #94a3b8;
    --gray-600: #475569;
    --gray-900: #0f172a;
    
    /* Brand Colors */
    --navy: #1e3a5f;
    --navy-deep: #0a1628;
    --blue-primary: #2563eb;
    --blue-hover: #1d4ed8;
    --blue-light: #dbeafe;
    --yellow-accent: #f59e0b;
    --yellow-light: #fef3c7;
    
    /* Semantic Colors */
    --green: #10b981;
    --green-light: #d1fae5;
    --red: #ef4444;
    --red-light: #fee2e2;
    --whatnot-orange: #ff5c00;
    --whatnot-orange-hover: #e65400;
    
    /* Typography */
    --font-display: 'Bebas Neue', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    --spacing-4xl: 80px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-full: 50px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.16);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index layers */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 1000;
    --z-toast: 1100;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--white);
    color: var(--gray-900);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    letter-spacing: 2px;
    line-height: 1.1;
}

.heading-1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    letter-spacing: 3px;
}

.heading-2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
}

.heading-3 {
    font-size: clamp(1.5rem, 3vw, 1.75rem);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
    background: var(--white);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--gray-100);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.75rem;
    letter-spacing: 2px;
    color: var(--navy-deep);
}

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

.nav-links {
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-links a {
    color: var(--gray-600);
    font-weight: 500;
    font-size: 0.9rem;
    transition: color var(--transition-base);
}

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

.nav-cta {
    background: var(--blue-primary);
    color: var(--white) !important;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: background var(--transition-base);
}

.nav-cta:hover {
    background: var(--blue-hover);
}

.nav-cart {
    position: relative;
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    z-index: 10000;
    pointer-events: auto;
}

.cart-count {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--blue-primary);
    color: var(--white);
    font-size: 0.7rem;
    font-weight: 700;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: none; /* Hidden by default, JS will show if items exist */
    align-items: center;
    justify-content: center;
}

.cart-count.loaded {
    display: flex;
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
    position: relative;
    z-index: 10000;
    pointer-events: auto;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--navy-deep);
    transition: var(--transition-base);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-base);
}

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

.btn-primary:hover {
    background: var(--blue-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.25);
}

.btn-secondary {
    background: var(--white);
    color: var(--navy-deep);
    border: 2px solid var(--gray-200);
}

.btn-secondary:hover {
    border-color: var(--blue-primary);
    color: var(--blue-primary);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--white);
}

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

.btn-whatnot:hover {
    background: var(--whatnot-orange-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 92, 0, 0.3);
}

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

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

.btn svg {
    width: 18px;
    height: 18px;
}

.btn-sm {
    padding: 10px 20px;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1rem;
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--gray-100);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--blue-primary);
}

/* Product Card */
.product-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

/* Card Flip */
.card-image-container {
    position: relative;
    width: 100%;
    aspect-ratio: 3/4;
    perspective: 1000px;
}

.card-flipper {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s ease;
    transform-style: preserve-3d;
    cursor: pointer;
}

.card-flipper.flipped {
    transform: rotateY(180deg);
}

.card-front,
.card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    background: linear-gradient(135deg, var(--gray-100), var(--gray-50));
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.card-front img,
.card-back img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-back {
    transform: rotateY(180deg);
    background: linear-gradient(135deg, var(--gray-50), var(--gray-200));
}

.flip-hint {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0,0,0,0.7);
    color: white;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
    z-index: 5;
}

.card-image-container:hover .flip-hint {
    opacity: 1;
}

/* Zoom Button */
.zoom-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.95);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--navy-deep);
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    z-index: 10;
    transition: all var(--transition-fast);
}

.zoom-btn:hover {
    background: var(--blue-primary);
    color: var(--white);
    transform: scale(1.1);
}

.zoom-btn svg {
    width: 18px;
    height: 18px;
}

/* Badge Bar */
.badge-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.75));
    padding: 28px 12px 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 5;
    pointer-events: none;
}

.badge {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
}

.badge-new {
    background: var(--yellow-accent);
    color: var(--navy-deep);
}

.badge-sport {
    background: var(--blue-primary);
    color: var(--white);
}

.badge-vintage {
    background: rgba(255,255,255,0.2);
    color: var(--white);
}

.badge-grade {
    background: var(--white);
    color: var(--navy-deep);
    padding: 5px 10px;
}

.badge-condition {
    background: var(--gray-100);
    color: var(--gray-900);
    padding: 5px 10px;
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--navy-deep);
    margin-bottom: var(--spacing-sm);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-100);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition-base);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--blue-primary);
}

.form-input::placeholder {
    color: var(--gray-400);
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.form-checkbox input {
    width: 18px;
    height: 18px;
    accent-color: var(--blue-primary);
}

/* ============================================
   MODALS
   ============================================ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    padding: 20px;
}

.modal-overlay.open {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: 40px;
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: translateY(20px);
    transition: transform var(--transition-base);
}

.modal-overlay.open .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    background: var(--gray-50);
    border-radius: 50%;
    font-size: 1.5rem;
    color: var(--gray-600);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.modal-close:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--navy-deep);
    color: var(--white);
    padding: 16px 24px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-xl);
    transform: translateY(100px);
    opacity: 0;
    transition: all var(--transition-base);
    z-index: var(--z-toast);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    border-left: 4px solid var(--green);
}

.toast.error {
    border-left: 4px solid var(--red);
}

.toast svg {
    width: 20px;
    height: 20px;
}

.toast.success svg {
    color: var(--green);
}

.toast.error svg {
    color: var(--red);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--navy-deep);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand .footer-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--white);
    margin-bottom: var(--spacing-sm);
}

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

.footer-brand p {
    color: var(--gray-400);
    font-size: 0.85rem;
    margin-bottom: 12px;
}

.veteran-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,0.1);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--yellow-accent);
}

.veteran-badge svg {
    width: 14px;
    height: 14px;
}

.footer-links {
    display: flex;
    gap: var(--spacing-2xl);
}

.footer-col h4 {
    font-family: var(--font-display);
    font-size: 0.9rem;
    color: var(--white);
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.footer-col a {
    display: block;
    color: var(--gray-400);
    font-size: 0.85rem;
    margin-bottom: 8px;
    transition: color var(--transition-base);
}

.footer-col a:hover {
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: var(--gray-400);
    font-size: 0.8rem;
}

/* ============================================
   UTILITIES
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-white { color: var(--white); }
.text-gray { color: var(--gray-600); }
.text-navy { color: var(--navy-deep); }
.text-blue { color: var(--blue-primary); }
.text-yellow { color: var(--yellow-accent); }

.bg-white { background: var(--white); }
.bg-off-white { background: var(--off-white); }
.bg-navy { background: var(--navy-deep); }
.bg-blue { background: var(--blue-primary); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.py-section { padding: var(--spacing-4xl) 0; }
.py-section-sm { padding: var(--spacing-3xl) 0; }

.hidden { display: none !important; }
.visible { display: block !important; }

.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }
.gap-4 { gap: var(--spacing-xl); }

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.2); opacity: 0.8; }
}

@keyframes livePulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255, 92, 0, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(255, 92, 0, 0); }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease forwards;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.6s ease forwards;
}

.animate-fade-in-right {
    animation: fadeInRight 0.6s ease forwards;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .footer-links {
        gap: var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        gap: var(--spacing-md);
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .footer-links {
        flex-wrap: wrap;
        gap: var(--spacing-lg);
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 20px;
        --spacing-xl: 28px;
    }
}

/* ============================================
   LOADING STATES
   ============================================ */
.skeleton {
    background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-50) 50%, var(--gray-100) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--blue-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}