/* ============================================
   Professional Feature Cards
   Brand Colors: #002b1b (Dark Green) Primary
   Modern, Clean, Professional Design
============================================= */

:root {
    --feature-primary: #002b1b;
    --feature-secondary: #00d9a3;
    --feature-accent: #00ffc8;
    --feature-bg: #f8fafb;
    --feature-card-bg: #ffffff;
    --feature-border: #e5e7eb;
    --feature-text: #1a1a1a;
    --feature-text-light: #6b7280;
}

/* Section Container */
.features-section {
    padding: 100px 0;
    background: var(--feature-bg);
    position: relative;
}

.features-section .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Grid Layout */
.features-grid {
    display: grid;
    gap: 30px;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

/* Force 4 columns on desktop */
@media (min-width: 992px) {
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Feature Card */
.feature-card {
    position: relative;
    background: var(--feature-card-bg);
    border: 1px solid var(--feature-border);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    cursor: default;
}

/* Top Border Accent */
.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--feature-primary), var(--feature-secondary));
    border-radius: 20px 20px 0 0;
    opacity: 0;
    transition: opacity 0.4s ease;
}

/* Subtle Background Gradient on Hover */
.feature-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0, 43, 27, 0.02), rgba(0, 217, 163, 0.02));
    opacity: 0;
    transition: opacity 0.4s ease;
    border-radius: 20px;
}

/* Hover State */
.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 43, 27, 0.12);
    border-color: var(--feature-secondary);
}

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

.feature-card:hover::after {
    opacity: 1;
}

/* Icon Container */
.feature-icon-container {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 43, 27, 0.06), rgba(0, 217, 163, 0.06));
    border-radius: 20px;
    font-size: 36px;
    color: var(--feature-primary);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 1;
}

/* Icon Container Background Gradient (Hidden) */
.feature-icon-container::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--feature-primary), var(--feature-secondary));
    border-radius: 20px;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: -1;
}

/* Hover Icon Effect */
.feature-card:hover .feature-icon-container {
    transform: scale(1.08) translateY(-4px);
    color: #ffffff;
}

.feature-card:hover .feature-icon-container::before {
    opacity: 1;
}

/* Icon Animation */
.feature-icon-container i {
    transition: transform 0.4s ease;
}

.feature-card:hover .feature-icon-container i {
    transform: scale(1.1);
}

/* Title */
.feature-title {
    font-size: 20px;
    font-weight: 700;
    line-height: 1.4;
    color: var(--feature-text);
    margin: 0;
    transition: color 0.3s ease;
    position: relative;
    z-index: 1;
}

.feature-card:hover .feature-title {
    color: var(--feature-primary);
}

/* Optional Subtitle/Description */
.feature-subtitle {
    font-size: 15px;
    color: var(--feature-text-light);
    margin-top: 10px;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

/* Different Icon Color Variations (Optional) */
.feature-card:nth-child(1) .feature-icon-container {
    background: linear-gradient(135deg, rgba(0, 43, 27, 0.06), rgba(0, 217, 163, 0.08));
}

.feature-card:nth-child(2) .feature-icon-container {
    background: linear-gradient(135deg, rgba(0, 77, 48, 0.06), rgba(0, 255, 200, 0.08));
}

.feature-card:nth-child(3) .feature-icon-container {
    background: linear-gradient(135deg, rgba(0, 43, 27, 0.06), rgba(0, 217, 163, 0.08));
}

.feature-card:nth-child(4) .feature-icon-container {
    background: linear-gradient(135deg, rgba(0, 77, 48, 0.06), rgba(0, 255, 200, 0.08));
}

/* Responsive Design */
@media (max-width: 991px) {
    .features-section {
        padding: 80px 0;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .feature-card {
        padding: 35px 25px;
    }
    
    .feature-icon-container {
        width: 70px;
        height: 70px;
        font-size: 32px;
    }
    
    .feature-title {
        font-size: 18px;
    }
}

@media (max-width: 767px) {
    .features-section {
        padding: 60px 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-card {
        padding: 30px 25px;
    }
    
    .feature-icon-container {
        width: 65px;
        height: 65px;
        font-size: 28px;
    }
}

@media (max-width: 575px) {
    .feature-card {
        padding: 28px 20px;
    }
}

/* Accessibility */
.feature-card:focus-within {
    outline: 3px solid var(--feature-secondary);
    outline-offset: 4px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .feature-card,
    .feature-icon-container,
    .feature-icon-container i,
    .feature-title {
        transition: none !important;
    }
    
    .feature-card:hover {
        transform: none;
    }
}

/* Print Styles */
@media print {
    .feature-card {
        break-inside: avoid;
        box-shadow: none !important;
        border: 1px solid #000;
    }
}

/* Loading State */
.feature-card.loading {
    pointer-events: none;
    opacity: 0.6;
}

.feature-card.loading .feature-icon-container {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}