/* ===================== Reset & Base Styles ===================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-dark: #0a0e27;
    --bg-secondary: #151932;
    --bg-card: #1a1f3a;
    --bg-card-hover: #21274a;
    --accent-blue: #00d4ff;
    --accent-purple: #a855f7;
    --accent-green: #10b981;
    --accent-red: #ef4444;
    --accent-orange: #f59e0b;
    --accent-yellow: #eab308;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: rgba(0, 212, 255, 0.1);
    --border-light: rgba(255, 255, 255, 0.05);
    --gradient: linear-gradient(135deg, #00d4ff 0%, #a855f7 100%);
    --gradient-hover: linear-gradient(135deg, #00c4ff 0%, #9b46f0 100%);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.4);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    padding-top: 80px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===================== Header & Navigation ===================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1rem 2rem;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(20px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.logo span {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo:hover {
    transform: translateY(-1px);
}

.navbar {
    display: flex;
    gap: 2rem;
    align-items: center;
    transition: transform 0.4s ease, opacity 0.4s ease;
}

.navbar a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    transition: all 0.3s ease;
    padding: 0.5rem 0;
}

.navbar a:hover,
.navbar a.active {
    color: var(--text-primary);
}

.navbar a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s ease;
}

.navbar a:hover::after,
.navbar a.active::after {
    width: 100%;
}

.gradient-btn {
    padding: 0.75rem 1.5rem;
    background: var(--gradient);
    color: white;
    border: none;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

.gradient-btn.outline {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-primary);
}

.gradient-btn.outline:hover {
    border-color: var(--accent-blue);
    background: rgba(0, 212, 255, 0.1);
}

#menu-icon {
    font-size: 1.8rem;
    color: var(--text-primary);
    cursor: pointer;
    display: none;
    transition: all 0.3s ease;
    z-index: 1001;
}

#menu-icon:hover {
    color: var(--accent-blue);
}

/* Menu Icon Animation */
body.menu-open #menu-icon {
    transform: rotate(90deg);
    color: var(--accent-blue);
}

/* ===================== Stocks Section ===================== */
.stocks-section {
    padding: 4rem 0;
    min-height: 100vh;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.header-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent-blue);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(0, 212, 255, 0.2);
}

.section-header h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===================== Market Overview ===================== */
.market-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.overview-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.overview-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient);
}

.overview-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    border-color: rgba(0, 212, 255, 0.3);
}

.overview-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.overview-content h3 {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.overview-price {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.overview-change {
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    display: inline-block;
}

.overview-change.positive {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent-green);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.overview-change.negative {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* ===================== Search & Filters ===================== */
.search-filters-container {
    margin-bottom: 3rem;
}

.search-container {
    max-width: 600px;
    margin: 0 auto 2rem;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 0.5rem 1.5rem;
    transition: all 0.3s ease;
}

.search-box:focus-within {
    border-color: var(--accent-blue);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.search-box i {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-right: 0.5rem;
}

.search-box input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    padding: 0.8rem 0;
    outline: none;
}

.search-box input::placeholder {
    color: var(--text-secondary);
}

.clear-search {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.clear-search:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

.search-results-info {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 1rem;
    min-height: 1.2rem;
}

.filter-controls {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.filter-group label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.filter-group select {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-group select:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.1);
}

/* ===================== Stocks Grid ===================== */
.stocks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stock-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 1.5rem;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.stock-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.stock-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0, 212, 255, 0.3);
}

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

.stock-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.stock-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.stock-info {
    flex: 1;
    min-width: 0;
}

.stock-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.stock-symbol {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.stock-sector {
    font-size: 0.8rem;
    color: var(--accent-blue);
    background: rgba(0, 212, 255, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    display: inline-block;
}

.stock-price {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stock-change {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.stock-change.positive {
    color: var(--accent-green);
}

.stock-change.negative {
    color: var(--accent-red);
}

.stock-details {
    border-top: 1px solid var(--border-light);
    padding-top: 1rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.stock-detail {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.detail-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.detail-value {
    font-size: 0.9rem;
    font-weight: 600;
}

/* Sector-specific colors */
.sector-technology { background: rgba(0, 212, 255, 0.1); color: var(--accent-blue); }
.sector-healthcare { background: rgba(16, 185, 129, 0.1); color: var(--accent-green); }
.sector-financial { background: rgba(245, 158, 11, 0.1); color: var(--accent-orange); }
.sector-consumer { background: rgba(234, 179, 8, 0.1); color: var(--accent-yellow); }
.sector-industrial { background: rgba(168, 85, 247, 0.1); color: var(--accent-purple); }

/* ===================== Loading & No Results ===================== */
.loading {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-secondary);
}

.loading-spinner {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--accent-blue);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.no-results {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.no-results i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.no-results h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.no-results p {
    font-size: 1rem;
}

/* ===================== Load More ===================== */
.load-more-container {
    text-align: center;
    margin: 3rem 0;
}

/* ===================== Highlight ===================== */
.highlight {
    background: linear-gradient(120deg, var(--accent-blue) 0%, var(--accent-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
    padding: 0 2px;
}

/* ===================== Footer ===================== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: var(--accent-blue);
}

/* ===================== Mobile Responsive Design ===================== */
@media (max-width: 1024px) {
    .stocks-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
    
    .section-header h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    body {
        padding-top: 70px;
    }
    
    .header {
        padding: 1rem 1.5rem;
    }
    
    /* Mobile Menu Fix */
    .navbar {
        position: fixed;
        top: 100%;
        left: 0;
        width: 100%;
        height: calc(100vh - 100%);
        flex-direction: column;
        gap: 0;
        background: rgba(10, 14, 39, 0.98);
        backdrop-filter: blur(20px);
        padding: 2rem 1.5rem;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.4s ease;
        z-index: 999;
        overflow-y: auto;
    }
    
    .navbar.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .navbar a {
        padding: 1.25rem 0;
        border-bottom: 1px solid var(--border-light);
        width: 100%;
        text-align: center;
        font-size: 1.1rem;
        justify-content: center;
    }
    
    .navbar a:last-child {
        border-bottom: none;
    }
    
    .navbar a::after {
        display: none;
    }
    
    #menu-icon {
        display: block;
    }
    
    /* Hide Get Started button on mobile */
    .header .gradient-btn {
        display: none;
    }
    
    /* Prevent body scroll when menu is open */
    body.menu-open {
        overflow: hidden;
    }
    
    /* Stocks Section Mobile */
    .stocks-section {
        padding: 2rem 0;
    }
    
    .section-header {
        margin-bottom: 2rem;
    }
    
    .section-header h1 {
        font-size: 2rem;
        line-height: 1.2;
    }
    
    .section-header p {
        font-size: 1rem;
    }
    
    /* Market Overview Mobile */
    .market-overview {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-bottom: 2rem;
    }
    
    .overview-card {
        padding: 1.25rem;
    }
    
    .overview-icon {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
    
    .overview-price {
        font-size: 1.5rem;
    }
    
    /* Search & Filters Mobile */
    .search-container {
        margin-bottom: 1.5rem;
    }
    
    .search-box {
        padding: 0.5rem 1rem;
    }
    
    .filter-controls {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .filter-group {
        width: 100%;
        max-width: 250px;
        justify-content: space-between;
    }
    
    .filter-group select {
        flex: 1;
        max-width: 150px;
    }
    
    /* Stocks Grid Mobile */
    .stocks-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-bottom: 2rem;
    }
    
    .stock-card {
        padding: 1.25rem;
    }
    
    .stock-header {
        gap: 0.75rem;
    }
    
    .stock-icon {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }
    
    .stock-name {
        font-size: 1.1rem;
    }
    
    .stock-price {
        font-size: 1.5rem;
    }
    
    .stock-details {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    /* Footer Mobile */
    .footer .container {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
    
    .footer-links {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .footer {
        margin-top: 2rem;
        padding: 1.5rem 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .header {
        padding: 0.75rem 1rem;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .stocks-section {
        padding: 1.5rem 0;
    }
    
    .section-header h1 {
        font-size: 1.75rem;
    }
    
    .header-badge {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }
    
    /* Market Overview Mobile Small */
    .overview-card {
        padding: 1rem;
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }
    
    .overview-icon {
        width: 45px;
        height: 45px;
        font-size: 1.2rem;
    }
    
    .overview-price {
        font-size: 1.3rem;
    }
    
    /* Stock Card Mobile Small */
    .stock-card {
        padding: 1rem;
    }
    
    .stock-header {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }
    
    .stock-name {
        font-size: 1rem;
    }
    
    .stock-price {
        font-size: 1.3rem;
    }
    
    .stock-change {
        font-size: 0.9rem;
    }
    
    .stock-sector {
        font-size: 0.75rem;
    }
    
    /* Search Box Mobile Small */
    .search-box {
        padding: 0.4rem 1rem;
    }
    
    .search-box input {
        font-size: 0.9rem;
        padding: 0.6rem 0;
    }
    
    /* Loading & No Results Mobile Small */
    .loading {
        padding: 2rem 1rem;
    }
    
    .no-results {
        padding: 3rem 1rem;
    }
    
    .no-results i {
        font-size: 3rem;
    }
    
    .no-results h3 {
        font-size: 1.25rem;
    }
    
    /* Footer Mobile Small */
    .footer-links {
        gap: 1rem;
    }
    
    .footer-links a {
        font-size: 0.8rem;
    }
}

/* Touch device improvements */
@media (hover: none) and (pointer: coarse) {
    .gradient-btn:hover,
    .stock-card:hover,
    .overview-card:hover {
        transform: none;
    }
    
    .gradient-btn:active,
    .stock-card:active,
    .overview-card:active {
        transform: scale(0.98);
    }
    
    .stock-card:active::before {
        transform: scaleX(1);
    }
    
    /* Improve touch targets */
    .navbar a {
        padding: 1rem 0;
    }
    
    .filter-group select {
        padding: 0.75rem 1rem;
    }
    
    .stock-sector {
        padding: 0.4rem 0.75rem;
    }
}

/* High-resolution displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .search-box:focus-within {
        box-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
    }
    
    .stock-card:hover {
        box-shadow: 0 20px 80px rgba(0, 0, 0, 0.5);
    }
}

/* Reduced motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .loading-spinner {
        animation: none;
    }
    
    .stock-card::before,
    .overview-card::before {
        transition: none;
    }
}

/* Landscape orientation improvements */
@media (max-width: 768px) and (orientation: landscape) {
    .navbar {
        height: calc(100vh - 70px);
        overflow-y: auto;
    }
    
    .navbar a {
        padding: 0.75rem 0;
    }
    
    .stocks-section {
        padding: 1rem 0;
    }
    
    .market-overview {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stocks-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Very small screens */
@media (max-width: 360px) {
    .container {
        padding: 0 0.75rem;
    }
    
    .stock-card {
        padding: 0.75rem;
    }
    
    .stock-price {
        font-size: 1.2rem;
    }
    
    .stock-name {
        font-size: 0.95rem;
    }
    
    .overview-card {
        padding: 0.75rem;
    }
    
    .overview-price {
        font-size: 1.2rem;
    }
    
    .filter-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-group select {
        max-width: none;
    }
}