/* ==========================================
   CSS VARIABLES & THEME
   ========================================== */
:root {
    /* Colors - Professional Financial Palette */
    --navy-900: #0a1628;
    --navy-800: #112240;
    --navy-700: #1a365d;
    --navy-600: #2c5282;
    --navy-500: #3182ce;
    
    --gold-600: #d4a574;
    --gold-500: #e6b88a;
    --gold-400: #f0c89e;
    
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    
    --risk-low: #10b981;
    --risk-medium: #f59e0b;
    --risk-high: #ef4444;
    
    --quantum-gradient: linear-gradient(135deg, #3182ce 0%, #805ad5 50%, #d4a574 100%);
    --mesh-gradient: radial-gradient(at 0% 0%, rgba(49, 130, 206, 0.1) 0px, transparent 50%),
                     radial-gradient(at 100% 100%, rgba(212, 165, 116, 0.08) 0px, transparent 50%);
    
    /* Typography */
    --font-display: 'Crimson Pro', serif;
    --font-body: 'DM Sans', sans-serif;
    
    /* Spacing */
    --container-width: 1400px;
    --header-height: 80px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(10, 22, 40, 0.05);
    --shadow-md: 0 4px 12px rgba(10, 22, 40, 0.08);
    --shadow-lg: 0 12px 40px rgba(10, 22, 40, 0.12);
    --shadow-xl: 0 20px 60px rgba(10, 22, 40, 0.15);
    
    /* Transitions */
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
}

/* ==========================================
   RESET & BASE STYLES
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.6;
    color: var(--navy-900);
    background: var(--slate-50);
    background-image: var(--mesh-gradient);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* ==========================================
   HEADER
   ========================================== */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--slate-200);
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
    animation: slideDown 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--header-height);
}

.logo h1 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    background: var(--quantum-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.25rem;
    letter-spacing: -0.02em;
}

.tagline {
    font-size: 0.75rem;
    color: var(--slate-500);
    font-weight: 500;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-size: 0.95rem;
    color: var(--slate-600);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    transition: var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--navy-700);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -1.5rem;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--quantum-gradient);
}

.btn-connect {
    background: var(--navy-800);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-connect::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--quantum-gradient);
    opacity: 0;
    transition: var(--transition-base);
}

.btn-connect:hover::before {
    opacity: 1;
}

.btn-connect:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-connect span {
    position: relative;
    z-index: 1;
}

/* ==========================================
   MAIN CONTENT
   ========================================== */
.main {
    padding: 3rem 0 6rem;
    min-height: calc(100vh - var(--header-height) - 200px);
}

.marketplace-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 3rem;
    margin-top: 2rem;
}

/* ==========================================
   SIDEBAR FILTERS
   ========================================== */
.sidebar {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    height: fit-content;
    position: sticky;
    top: calc(var(--header-height) + 2rem);
    box-shadow: var(--shadow-md);
    animation: fadeInLeft 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.2s both;
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.filter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--slate-200);
}

.filter-header h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--navy-800);
}

.btn-reset {
    background: none;
    border: none;
    color: var(--navy-500);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: var(--transition-fast);
}

.btn-reset:hover {
    background: var(--slate-100);
    color: var(--navy-700);
}

.filter-section {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--slate-200);
}

.filter-section:last-child {
    border-bottom: none;
}

.filter-section h3 {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--slate-600);
    margin-bottom: 1rem;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--slate-700);
    transition: var(--transition-fast);
    padding: 0.25rem;
    border-radius: 4px;
}

.checkbox-label:hover {
    background: var(--slate-50);
    color: var(--navy-700);
}

.checkbox-label input[type="checkbox"] {
    margin-right: 0.75rem;
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--navy-600);
}

.risk-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    display: inline-block;
}

.risk-low {
    background: rgba(16, 185, 129, 0.1);
    color: var(--risk-low);
}

.risk-medium {
    background: rgba(245, 158, 11, 0.1);
    color: var(--risk-medium);
}

.risk-high {
    background: rgba(239, 68, 68, 0.1);
    color: var(--risk-high);
}

.range-inputs {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.range-inputs input {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--slate-300);
    border-radius: 6px;
    font-size: 0.9rem;
    font-family: var(--font-body);
    transition: var(--transition-fast);
}

.range-inputs input:focus {
    outline: none;
    border-color: var(--navy-500);
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

.range-inputs span {
    color: var(--slate-400);
}

.select-input {
    width: 100%;
    padding: 0.65rem;
    border: 1px solid var(--slate-300);
    border-radius: 6px;
    font-size: 0.9rem;
    font-family: var(--font-body);
    background: white;
    cursor: pointer;
    transition: var(--transition-fast);
}

.select-input:focus {
    outline: none;
    border-color: var(--navy-500);
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

/* ==========================================
   PRODUCTS CONTAINER
   ========================================== */
.products-container {
    animation: fadeIn 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.3s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.products-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1.5rem 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.products-header h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--navy-800);
    margin-bottom: 0.25rem;
}

.results-count {
    font-size: 0.9rem;
    color: var(--slate-500);
    font-weight: 500;
}

.results-count span {
    font-weight: 700;
    color: var(--navy-600);
}

.sort-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sort-controls label {
    font-size: 0.9rem;
    color: var(--slate-600);
    font-weight: 500;
}

/* ==========================================
   PRODUCT CARDS
   ========================================== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
}

.product-card {
    background: white;
    border-radius: 12px;
    padding: 1.75rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    border: 1px solid var(--slate-200);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    animation: fadeInUp 0.5s cubic-bezier(0.22, 1, 0.36, 1) both;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--quantum-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-base);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--navy-500);
}

.product-card:hover::before {
    transform: scaleX(1);
}

.product-image {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 0.75rem;
    width: 100%;
    height: 180px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 180px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.25rem;
}

.asset-type {
    display: inline-block;
    padding: 0.4rem 0.85rem;
    background: var(--slate-100);
    color: var(--slate-700);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 6px;
}

.card-title {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--navy-800);
    margin: 0.75rem 0 0.5rem;
    line-height: 1.3;
}

.card-description {
    font-size: 0.9rem;
    color: var(--slate-600);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    display: -webkit-box;
    line-clamp: 3;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding: 1.25rem;
    background: var(--slate-50);
    border-radius: 8px;
    border: 1px solid var(--slate-200);
}

.metric {
    display: flex;
    flex-direction: column;
}

.metric-label {
    font-size: 0.75rem;
    color: var(--slate-500);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.metric-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--navy-800);
}

.metric-value.yield {
    color: var(--risk-low);
}

.card-details {
    display: grid;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--slate-200);
}

.detail-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.detail-label {
    color: var(--slate-500);
    font-weight: 500;
}

.detail-value {
    color: var(--navy-700);
    font-weight: 600;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.25rem;
    border-top: 1px solid var(--slate-200);
}

.minimum-investment {
    display: flex;
    flex-direction: column;
}

.minimum-label {
    font-size: 0.75rem;
    color: var(--slate-500);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.minimum-value {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--navy-800);
    margin-top: 0.25rem;
}

.btn-invest {
    background: var(--navy-800);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-invest::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--quantum-gradient);
    opacity: 0;
    transition: var(--transition-base);
}

.btn-invest:hover::before {
    opacity: 1;
}

.btn-invest:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-invest span {
    position: relative;
    z-index: 1;
}

.btn-express-interest {
    background: var(--navy-800);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}
.btn-express-interest::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--quantum-gradient);
    opacity: 0;
    transition: var(--transition-base);
}
.btn-express-interest:hover::before {
    opacity: 1;
}
.btn-express-interest:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}
.btn-express-interest span {
    position: relative;
    z-index: 1;
}

/* ==========================================
   EXPRESS INTEREST MODAL STYLES
   ========================================== */
.ei-input {
    padding: 0.75rem;
    border-radius: 8px;
    border: 1px solid var(--slate-300);
    font-size: 1rem;
    font-family: var(--font-body);
    transition: border-color 0.2s;
    margin-bottom: 0.25rem;
    width: 100%;
    box-sizing: border-box;
}
.ei-input:focus {
    border-color: var(--navy-500);
    outline: none;
}
.ei-label {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--navy-700);
    margin-left: 0.25rem;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    background: var(--navy-900);
    color: white;
    padding: 3rem 0 2rem;
    margin-top: 6rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.footer-logo h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.footer-logo p {
    font-size: 0.85rem;
    color: var(--slate-400);
}

.footer-links {
    display: flex;
    gap: 2rem;
    justify-content: center;
}

.footer-links a {
    color: var(--slate-300);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--gold-400);
}

.footer-quantum {
    display: flex;
    justify-content: flex-end;
}

.quantum-badge {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gold-400);
}

.quantum-badge svg {
    color: var(--gold-400);
}

/* ==========================================
   MODAL DIALOG
   ========================================== */
.modal {
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(10, 22, 40, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    padding: 2rem 2.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    position: relative;
    min-width: 320px;
    max-width: 90vw;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

.close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    color: var(--navy-700);
    cursor: pointer;
    font-weight: bold;
    transition: color 0.2s;
}
.close:hover {
    color: var(--navy-900);
}

#connectForm {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

#connectForm label {
    font-size: 1rem;
    color: var(--navy-700);
    font-weight: 600;
}

#connectForm input[type="email"] {
    padding: 0.75rem;
    border-radius: 8px;
    border: 1px solid var(--slate-300);
    font-size: 1rem;
    font-family: var(--font-body);
    transition: border-color 0.2s;
}
#connectForm input[type="email"]:focus {
    border-color: var(--navy-500);
    outline: none;
}

.btn-connect-modal {
    background: var(--navy-800);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
}
.btn-connect-modal:hover {
    background: var(--navy-700);
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */
@media (max-width: 1200px) {
    .marketplace-layout {
        grid-template-columns: 260px 1fr;
        gap: 2rem;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (max-width: 968px) {
    .marketplace-layout {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: static;
        margin-bottom: 2rem;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .footer-quantum {
        justify-content: center;
    }
}

@media (max-width: 640px) {
    .header-content {
        flex-direction: column;
        height: auto;
        padding: 1rem 0;
        gap: 1rem;
    }
    
    .nav {
        width: 100%;
        justify-content: space-between;
    }
    
    .products-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .sort-controls {
        width: 100%;
    }
    
    .card-metrics {
        grid-template-columns: 1fr;
    }
}

/* ==========================================
   STAGGER ANIMATION DELAYS
   ========================================== */
.product-card:nth-child(1) { animation-delay: 0.05s; }
.product-card:nth-child(2) { animation-delay: 0.1s; }
.product-card:nth-child(3) { animation-delay: 0.15s; }
.product-card:nth-child(4) { animation-delay: 0.2s; }
.product-card:nth-child(5) { animation-delay: 0.25s; }
.product-card:nth-child(6) { animation-delay: 0.3s; }
.product-card:nth-child(7) { animation-delay: 0.35s; }
.product-card:nth-child(8) { animation-delay: 0.4s; }
.product-card:nth-child(9) { animation-delay: 0.45s; }