/* ==========================================================================
   DESIGN SYSTEM - OLYMPIA BICYCLES ARGENTINA
   ========================================================================== */

:root {
    /* Color Palette */
    --bg-primary: #050505;
    --bg-secondary: #0d0d0d;
    --bg-tertiary: #161616;
    
    --accent-red: #e30613;
    --accent-red-hover: #bd050f;
    --accent-red-glow: rgba(227, 6, 19, 0.15);
    
    --text-primary: #ffffff;
    --text-secondary: #b0b3b8;
    --text-muted: #65676b;
    --text-silver: #d1d5db;
    
    --border-color: #222222;
    --border-color-hover: #333333;
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Layout Details */
    --navbar-height: 80px;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --glow-shadow: 0 0 20px rgba(227, 6, 19, 0.35);
    --panel-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-smooth);
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition-smooth);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--border-radius-sm);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-red);
}

/* Common Layout Containers */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Section Styling */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px auto;
}

.section-tag {
    color: var(--accent-red);
    font-family: var(--font-heading);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.85rem;
    display: inline-block;
    margin-bottom: 12px;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* Buttons System */
.btn-primary {
    background-color: var(--accent-red);
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-weight: 600;
    padding: 14px 30px;
    border-radius: var(--border-radius-sm);
    display: inline-block;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-size: 0.9rem;
    box-shadow: 0 4px 14px rgba(227, 6, 19, 0.4);
}

.btn-primary:hover {
    background-color: var(--accent-red-hover);
    transform: translateY(-2px);
    box-shadow: var(--glow-shadow);
}

.btn-secondary {
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-weight: 600;
    padding: 14px 30px;
    border-radius: var(--border-radius-sm);
    display: inline-block;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-size: 0.9rem;
    background-color: rgba(255, 255, 255, 0.02);
}

.btn-secondary:hover {
    border-color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.05);
    transform: translateY(-2px);
}

/* ==========================================================================
   NAVIGATION BAR
   ========================================================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--navbar-height);
    background-color: rgba(5, 5, 5, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition-smooth);
}

.navbar-container {
    height: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-link {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.brand-logo {
    height: 22px;
    width: auto;
}

.logo-country {
    font-size: 0.65rem;
    font-family: var(--font-heading);
    font-weight: 800;
    letter-spacing: 4px;
    color: var(--accent-red);
    margin-top: 4px;
    margin-left: 2px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-silver);
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-btn-contact {
    background-color: var(--text-primary);
    color: var(--bg-primary);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 10px 20px;
    border-radius: var(--border-radius-sm);
}

.nav-btn-contact:hover {
    background-color: var(--accent-red);
    color: var(--text-primary);
    box-shadow: var(--glow-shadow);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
}

.mobile-menu-toggle .bar {
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-smooth);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero-section {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: var(--navbar-height);
    background-image: url('../img/showroom-bg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-background-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(0deg, var(--bg-primary) 5%, rgba(5, 5, 5, 0.4) 60%, rgba(5, 5, 5, 0.8) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 850px;
    text-align: center;
    padding: 0 24px;
}

.hero-badge {
    display: inline-block;
    padding: 6px 14px;
    border: 1px solid var(--accent-red);
    background-color: rgba(227, 6, 19, 0.1);
    color: var(--text-primary);
    border-radius: 50px;
    font-family: var(--font-heading);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 1.5px;
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(2.2rem, 6vw, 4.5rem);
    line-height: 1.1;
    letter-spacing: -1.5px;
    font-weight: 800;
    margin-bottom: 24px;
    text-transform: uppercase;
    background: linear-gradient(180deg, #ffffff 60%, #a0a0a0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto 40px auto;
    font-weight: 400;
}

.hero-cta-group {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: 0.6;
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 6px;
    height: 6px;
    border-right: 2px solid var(--text-primary);
    border-bottom: 2px solid var(--text-primary);
    transform: rotate(45deg);
    margin-top: 8px;
}

/* Animations */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translate(-50%, 0);
    }
    40% {
        transform: translate(-50%, -10px);
    }
    60% {
        transform: translate(-50%, -5px);
    }
}

/* ==========================================================================
   BIKES CATALOG SECTION
   ========================================================================== */

.catalog-section {
    background-color: var(--bg-primary);
}

.filter-tabs-container {
    display: flex;
    justify-content: center;
    margin-bottom: 50px;
}

.filter-tabs {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 6px;
    border-radius: var(--border-radius-sm);
    display: inline-flex;
    gap: 4px;
}

.filter-tab {
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 10px 22px;
    border-radius: var(--border-radius-sm);
}

.filter-tab:hover {
    color: var(--text-primary);
}

.filter-tab.active {
    background-color: var(--accent-red);
    color: var(--text-primary);
    box-shadow: 0 4px 10px rgba(227, 6, 19, 0.3);
}

.bikes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 32px;
}

/* Bike Card styling */
.bike-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition-smooth);
}

.bike-card:hover {
    border-color: var(--accent-red);
    transform: translateY(-8px);
    box-shadow: var(--panel-shadow);
}

.bike-card-image-wrap {
    position: relative;
    width: 100%;
    padding-bottom: 60%;
    background-color: #000;
    overflow: hidden;
}

.bike-card-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.bike-card:hover .bike-card-image {
    transform: scale(1.05);
}

.bike-card-overlay {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 10;
}

.category-tag {
    background-color: rgba(5, 5, 5, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 4px 10px;
    border-radius: var(--border-radius-sm);
}

.bike-card-content {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.bike-title {
    font-size: 1.4rem;
    margin-bottom: 12px;
    letter-spacing: -0.2px;
}

.bike-short-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
    flex-grow: 1;
}

.bike-mini-specs {
    border-top: 1px solid var(--border-color);
    padding-top: 18px;
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mini-spec-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
}

.spec-label {
    color: var(--text-muted);
}

.spec-val {
    color: var(--text-silver);
    font-weight: 500;
}

.bike-card-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.btn-card-detail {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-card-detail:hover {
    border-color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.03);
}

.btn-card-whatsapp {
    background-color: #25d366;
    color: #fff;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    box-shadow: 0 4px 10px rgba(37, 211, 102, 0.25);
}

.btn-card-whatsapp:hover {
    background-color: #20ba5a;
    transform: translateY(-1px);
    box-shadow: 0 6px 14px rgba(37, 211, 102, 0.4);
}

.icon-wa {
    width: 18px;
    height: 18px;
}

/* ==========================================================================
   TECHNOLOGIES SECTION
   ========================================================================== */

.tech-section {
    position: relative;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.tech-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 36px 28px;
    transition: var(--transition-smooth);
}

.tech-card:hover {
    border-color: var(--accent-red);
    transform: translateY(-4px);
    box-shadow: var(--panel-shadow);
}

.tech-card-icon {
    font-size: 2rem;
    margin-bottom: 20px;
    display: inline-block;
}

.tech-card-title {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.tech-card-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 300;
}

.text-light {
    color: var(--text-primary);
}

.text-silver {
    color: var(--text-silver);
}

/* ==========================================================================
   ABOUT / REPRESENTATIVE SECTION
   ========================================================================== */

.about-section {
    background-color: var(--bg-primary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
}

.about-image-column {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    padding-bottom: 70%;
}

.about-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-text {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.text-left {
    text-align: left;
}

.contact-details-box {
    margin-top: 40px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 32px;
    border-radius: var(--border-radius-md);
}

.contact-box-title {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.contact-box-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.btn-wa-large {
    background-color: #25d366;
    color: #fff;
    font-family: var(--font-heading);
    font-weight: 700;
    padding: 16px 32px;
    border-radius: var(--border-radius-sm);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 14px rgba(37, 211, 102, 0.3);
}

.btn-wa-large:hover {
    background-color: #20ba5a;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.45);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer {
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-logo {
    height: 18px;
    width: auto;
    margin-bottom: 12px;
}

.footer-copyright {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-disclaimer {
    font-size: 0.75rem;
    color: var(--text-muted);
    max-width: 450px;
    text-align: right;
}

/* ==========================================================================
   FLOATING WHATSAPP BUTTON
   ========================================================================== */

.whatsapp-floating-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: #25d366;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
    z-index: 900;
}

.whatsapp-floating-btn:hover {
    background-color: #20ba5a;
    transform: scale(1.1);
    box-shadow: 0 8px 24px rgba(37, 211, 102, 0.5);
}

.whatsapp-floating-btn svg {
    width: 32px;
    height: 32px;
}

/* ==========================================================================
   DETAILS SIDE DRAWER
   ========================================================================== */

.detail-drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    z-index: 1100;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.detail-drawer-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.detail-drawer {
    position: fixed;
    top: 0;
    right: -600px;
    width: 100%;
    max-width: 600px;
    height: 100vh;
    background-color: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    z-index: 1200;
    overflow-y: auto;
    padding: 40px;
    box-shadow: var(--panel-shadow);
    transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.detail-drawer.open {
    right: 0;
}

.drawer-close-btn {
    position: absolute;
    top: 24px;
    right: 24px;
    font-size: 2.2rem;
    color: var(--text-secondary);
}

.drawer-close-btn:hover {
    color: var(--text-primary);
}

.drawer-body {
    margin-top: 20px;
}

.drawer-bike-tag {
    display: inline-block;
    color: var(--accent-red);
    font-family: var(--font-heading);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1.5px;
    margin-bottom: 8px;
}

.drawer-bike-title {
    font-size: 2.2rem;
    margin-bottom: 24px;
    letter-spacing: -0.5px;
    line-height: 1.1;
}

/* Image gallery within drawer */
.drawer-bike-gallery {
    margin-bottom: 30px;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.drawer-main-image {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 1.6;
    object-fit: cover;
    background-color: #000;
}

.drawer-thumbnails {
    display: flex;
    gap: 10px;
    padding: 10px;
    background-color: var(--bg-primary);
    overflow-x: auto;
}

.drawer-thumb {
    width: 70px;
    height: 44px;
    object-fit: cover;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    border: 1px solid var(--border-color);
    opacity: 0.6;
    transition: var(--transition-smooth);
}

.drawer-thumb.active, .drawer-thumb:hover {
    opacity: 1;
    border-color: var(--accent-red);
}

.drawer-bike-desc {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

/* Specs table in drawer */
.drawer-specs-table-title {
    font-size: 1.25rem;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.drawer-specs-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 40px;
}

.drawer-specs-table tr {
    border-bottom: 1px solid var(--border-color);
}

.drawer-specs-table td {
    padding: 12px 0;
    font-size: 0.95rem;
}

.drawer-specs-label {
    font-weight: 500;
    color: var(--text-muted);
    width: 35%;
}

.drawer-specs-val {
    color: var(--text-silver);
}

.drawer-actions {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* ==========================================================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================================================== */

@media (max-width: 999px) {
    /* Navbar Mobile */
    .mobile-menu-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        max-width: 320px;
        height: 100vh;
        background-color: var(--bg-secondary);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 36px;
        border-left: 1px solid var(--border-color);
        transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 1000;
    }
    
    .nav-menu.open {
        right: 0;
    }
    
    .mobile-menu-toggle.open .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .mobile-menu-toggle.open .bar:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.open .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    /* Layout Adaptations */
    section {
        padding: 80px 0;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-image-column {
        padding-bottom: 60%;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-disclaimer {
        text-align: center;
    }
}

@media (max-width: 599px) {
    .container {
        padding: 0 16px;
    }
    
    .bikes-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-tabs {
        flex-wrap: wrap;
        justify-content: center;
        width: 100%;
    }
    
    .filter-tab {
        flex-grow: 1;
        padding: 8px 12px;
        font-size: 0.8rem;
    }
    
    .detail-drawer {
        padding: 24px;
    }
    
    .drawer-bike-title {
        font-size: 1.8rem;
    }
}

/* ==========================================================================
   SCROLL AND PAGE-LOAD ANIMATIONS
   ========================================================================== */

/* Page load animations for Hero */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-badge.fade-in-up {
    animation-delay: 0.1s;
}

.hero-title.fade-in-up {
    animation-delay: 0.2s;
}

.hero-subtitle.fade-in-up {
    animation-delay: 0.3s;
}

.hero-cta-group.fade-in-up {
    animation-delay: 0.4s;
}

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

/* Scroll-triggered reveal animations via Intersection Observer */
.fade-init {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-init.appear {
    opacity: 1;
    transform: translateY(0);
}

/* Add staggered delays to grid items if they load together */
.bike-card.appear:nth-child(2) { transition-delay: 0.1s; }
.bike-card.appear:nth-child(3) { transition-delay: 0.2s; }
.bike-card.appear:nth-child(4) { transition-delay: 0.3s; }

.tech-card.appear:nth-child(2) { transition-delay: 0.1s; }
.tech-card.appear:nth-child(3) { transition-delay: 0.2s; }
.tech-card.appear:nth-child(4) { transition-delay: 0.3s; }