/* ============================================
   DATA FLOW CARDS - Modern Data Ecosystem Visualization
   ============================================ */

/* Brand Colors */
:root {
    --primary-yellow: #FCC41B;
    --accent-red: #DC512D;
    --brand-purple: #8B2377;
    --success-green: #42A469;
    --text-dark: #1A1A1A;
    --bg-white: #FFFFFF;
}

/* Container */
.data-flow-viz {
    position: relative;
    width: 100%;
    max-width: 550px;
    margin: 0 auto;
    padding: 20px 0;
}

/* Grid Layout - 3 rows x 2 columns */
.data-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    position: relative;
}

/* Individual Data Card */
.data-card {
    position: relative;
    background: var(--bg-white);
    border-radius: 20px;
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    box-shadow: 
        0 8px 24px rgba(0, 0, 0, 0.08),
        0 2px 6px rgba(0, 0, 0, 0.04);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    overflow: hidden;
    border: 2px solid transparent;
}

/* Hover Effects */
.data-card:hover {
    transform: translateY(-8px) scale(1.03);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.12),
        0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: var(--card-color);
}

/* Gradient Background on Hover */
.data-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--card-color-light), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 20px;
    pointer-events: none;
}

.data-card:hover::before {
    opacity: 1;
}

/* Icon Container */
.data-card-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--card-color), var(--card-color-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--bg-white);
    margin-bottom: 16px;
    box-shadow: 
        0 8px 20px var(--card-color-shadow),
        inset 0 -3px 8px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
    position: relative;
    z-index: 1;
}

.data-card:hover .data-card-icon {
    transform: scale(1.1) rotate(5deg);
}

/* Icon Glow Effect */
.data-card-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: radial-gradient(circle, var(--card-color), transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease, width 0.3s ease, height 0.3s ease;
}

.data-card:hover .data-card-icon::after {
    opacity: 0.5;
    width: 140%;
    height: 140%;
}

/* Card Title */
.data-card-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin: 0 0 6px 0;
    letter-spacing: -0.02em;
    position: relative;
    z-index: 1;
}

/* Card Description */
.data-card-desc {
    font-size: 12px;
    color: rgba(26, 26, 26, 0.6);
    margin: 0;
    line-height: 1.4;
    position: relative;
    z-index: 1;
}

/* Flowing Data Lines Background */
.data-flow-lines {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.15;
}

.flow-line {
    position: absolute;
    width: 2px;
    height: 100%;
    background: linear-gradient(
        180deg,
        transparent,
        var(--line-color) 20%,
        var(--line-color) 80%,
        transparent
    );
}

.flow-line:nth-child(1) {
    left: 30%;
    --line-color: var(--brand-purple);
    animation: flow-down 4s ease-in-out infinite;
}

.flow-line:nth-child(2) {
    left: 50%;
    --line-color: var(--accent-red);
    animation: flow-down 4s ease-in-out infinite 1s;
}

.flow-line:nth-child(3) {
    left: 70%;
    --line-color: var(--primary-yellow);
    animation: flow-down 4s ease-in-out infinite 2s;
}

@keyframes flow-down {
    0%, 100% {
        transform: translateY(-100%);
        opacity: 0;
    }
    50% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(100%);
        opacity: 0;
    }
}

/* Card-Specific Colors */
.data-card.card-raw-data {
    --card-color: var(--brand-purple);
    --card-color-dark: #7A1F6A;
    --card-color-light: rgba(139, 35, 119, 0.1);
    --card-color-shadow: rgba(139, 35, 119, 0.3);
}

.data-card.card-governance {
    --card-color: #9B59B6; /* Lighter purple */
    --card-color-dark: #8E44AD;
    --card-color-light: rgba(155, 89, 182, 0.1);
    --card-color-shadow: rgba(155, 89, 182, 0.3);
}

.data-card.card-analytics {
    --card-color: var(--accent-red);
    --card-color-dark: #C44628;
    --card-color-light: rgba(220, 81, 45, 0.1);
    --card-color-shadow: rgba(220, 81, 45, 0.3);
}

.data-card.card-intelligence {
    --card-color: #E67E22; /* Orange */
    --card-color-dark: #D35400;
    --card-color-light: rgba(230, 126, 34, 0.1);
    --card-color-shadow: rgba(230, 126, 34, 0.3);
}

.data-card.card-automation {
    --card-color: var(--primary-yellow);
    --card-color-dark: #E6B018;
    --card-color-light: rgba(252, 196, 27, 0.1);
    --card-color-shadow: rgba(252, 196, 27, 0.3);
}

.data-card.card-growth {
    --card-color: var(--success-green);
    --card-color-dark: #3A935E;
    --card-color-light: rgba(66, 164, 105, 0.1);
    --card-color-shadow: rgba(66, 164, 105, 0.3);
}

/* Floating Animation */
@keyframes float-gentle {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-8px);
    }
}

.data-card:nth-child(1) {
    animation: float-gentle 5s ease-in-out infinite;
    animation-delay: 0s;
}

.data-card:nth-child(2) {
    animation: float-gentle 5s ease-in-out infinite;
    animation-delay: 0.5s;
}

.data-card:nth-child(3) {
    animation: float-gentle 5s ease-in-out infinite;
    animation-delay: 1s;
}

.data-card:nth-child(4) {
    animation: float-gentle 5s ease-in-out infinite;
    animation-delay: 1.5s;
}

.data-card:nth-child(5) {
    animation: float-gentle 5s ease-in-out infinite;
    animation-delay: 2s;
}

.data-card:nth-child(6) {
    animation: float-gentle 5s ease-in-out infinite;
    animation-delay: 2.5s;
}

/* Pulse Animation on Icons */
@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 
            0 8px 20px var(--card-color-shadow),
            inset 0 -3px 8px rgba(0, 0, 0, 0.15);
    }
    50% {
        box-shadow: 
            0 8px 20px var(--card-color-shadow),
            inset 0 -3px 8px rgba(0, 0, 0, 0.15),
            0 0 0 8px var(--card-color-light);
    }
}

.data-card-icon {
    animation: pulse-glow 3s ease-in-out infinite;
}

/* Title Emphasis Line */
.data-card-title::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--card-color);
    transition: width 0.3s ease;
}

.data-card:hover .data-card-title::after {
    width: 40px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .data-flow-viz {
        max-width: 100%;
        padding: 10px;
    }
    
    .data-grid {
        gap: 15px;
    }
    
    .data-card {
        padding: 20px 16px;
        border-radius: 16px;
    }
    
    .data-card-icon {
        width: 60px;
        height: 60px;
        font-size: 28px;
    }
    
    .data-card-title {
        font-size: 14px;
    }
    
    .data-card-desc {
        font-size: 11px;
    }
}

/* Single Column on Small Screens */
@media (max-width: 480px) {
    .data-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .data-card {
        background: rgba(255, 255, 255, 0.05);
        backdrop-filter: blur(10px);
    }
    
    .data-card-title {
        color: var(--bg-white);
    }
    
    .data-card-desc {
        color: rgba(255, 255, 255, 0.7);
    }
}