/**
 * Modern Features Section
 * Enhanced platform features showcase
 */

/* ========================================================================
   Features Section Base
   ======================================================================== */

.features-section-modern {
    padding: 8rem 0;
    background: linear-gradient(180deg, #ffffff 0%, #f9fafb 100%);
    position: relative;
    overflow: hidden;
}

/* ========================================================================
   Section Header
   ======================================================================== */

.features-header {
    max-width: 800px;
    margin: 0 auto 5rem;
}

/* ========================================================================
   Features Grid
   ======================================================================== */

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    position: relative;
    z-index: 5;
}

/* ========================================================================
   Feature Item
   ======================================================================== */

.feature-item {
    position: relative;
}

.feature-card {
    background: white;
    border-radius: 24px;
    padding: 3rem 2.5rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #4F46E5, #7C3AED, #EC4899);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.feature-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
    border-color: #f3f4f6;
}

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

/* ========================================================================
   Feature Number Badge
   ======================================================================== */

.feature-number {
    position: absolute;
    top: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #f9fafb, #f3f4f6);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 800;
    color: #9ca3af;
    transition: all 0.3s ease;
    z-index: 2;
}

.feature-card:hover .feature-number {
    background: linear-gradient(135deg, #4F46E5, #7C3AED);
    color: white;
    transform: rotate(10deg) scale(1.1);
}

/* ========================================================================
   Feature Icon
   ======================================================================== */

.feature-icon-container {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto 2rem;
    z-index: 3;
}

.feature-icon-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border-radius: 24px;
    opacity: 0.15;
    transition: all 0.4s ease;
}

.feature-glow-1 { background: linear-gradient(135deg, #4F46E5, #7C3AED); }
.feature-glow-2 { background: linear-gradient(135deg, #10b981, #059669); }
.feature-glow-3 { background: linear-gradient(135deg, #f59e0b, #d97706); }
.feature-glow-4 { background: linear-gradient(135deg, #ec4899, #db2777); }

.feature-card:hover .feature-icon-glow {
    transform: translate(-50%, -50%) scale(1.3);
    opacity: 0.2;
}

.feature-icon {
    position: relative;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f9fafb, #ffffff);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.25rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    z-index: 2;
}

.feature-icon img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.1));
    transition: transform 0.4s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(-5deg);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

.feature-card:hover .feature-icon img {
    transform: scale(1.05);
}

/* ========================================================================
   Feature Content
   ======================================================================== */

.feature-content {
    text-align: center;
    flex: 1;
    display: flex;
    flex-direction: column;
    z-index: 3;
    position: relative;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 1rem;
    line-height: 1.3;
    transition: color 0.3s ease;
}

.feature-card:hover .feature-title {
    color: #4F46E5;
}

.feature-description {
    font-size: 1rem;
    color: #6b7280;
    line-height: 1.7;
    margin-bottom: 0;
    flex: 1;
}

/* ========================================================================
   Decorative Element
   ======================================================================== */

.feature-decoration {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: radial-gradient(ellipse at center bottom, rgba(79, 70, 229, 0.05) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
    pointer-events: none;
}

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

/* ========================================================================
   Features CTA
   ======================================================================== */

.features-cta {
    margin-top: 5rem;
}

.features-cta .btn-modern-primary {
    padding: 1.125rem 3rem;
    font-size: 1.125rem;
    font-weight: 600;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(79, 70, 229, 0.3);
}

.features-cta .btn-modern-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(79, 70, 229, 0.4);
}

/* ========================================================================
   Background Decoration
   ======================================================================== */

.features-bg-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.decoration-circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.4;
    animation: float-decoration 20s ease-in-out infinite;
}

.decoration-1 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.1) 0%, transparent 70%);
    top: -100px;
    left: -100px;
    animation-delay: 0s;
}

.decoration-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(236, 72, 153, 0.08) 0%, transparent 70%);
    bottom: -150px;
    right: -150px;
    animation-delay: 5s;
}

.decoration-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.08) 0%, transparent 70%);
    top: 50%;
    right: 10%;
    animation-delay: 10s;
}

@keyframes float-decoration {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

/* ========================================================================
   Alternate Layout (Staggered)
   ======================================================================== */

@media (min-width: 992px) {
    .feature-item:nth-child(even) .feature-card {
        margin-top: 3rem;
    }
}

/* ========================================================================
   Mobile Responsiveness
   ======================================================================== */

@media (max-width: 1200px) {
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 2rem;
    }
}

@media (max-width: 991px) {
    .features-section-modern {
        padding: 5rem 0;
    }
    
    .features-header {
        margin-bottom: 3rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 2rem;
    }
    
    .feature-card {
        padding: 2.5rem 2rem;
    }
    
    .feature-item:nth-child(even) .feature-card {
        margin-top: 0;
    }
    
    .feature-icon-container {
        width: 90px;
        height: 90px;
        margin-bottom: 1.75rem;
    }
    
    .feature-title {
        font-size: 1.375rem;
    }
    
    .features-cta {
        margin-top: 3rem;
    }
}

@media (max-width: 768px) {
    .features-section-modern {
        padding: 4rem 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.75rem;
    }
    
    .feature-card {
        padding: 2.25rem 1.75rem;
    }
    
    .feature-number {
        width: 45px;
        height: 45px;
        font-size: 1.125rem;
        top: 1.5rem;
        right: 1.5rem;
    }
    
    .feature-icon-container {
        width: 80px;
        height: 80px;
        margin-bottom: 1.5rem;
    }
    
    .feature-icon {
        padding: 1rem;
    }
    
    .feature-title {
        font-size: 1.25rem;
    }
    
    .feature-description {
        font-size: 0.9375rem;
    }
}

@media (max-width: 576px) {
    .features-section-modern {
        padding: 3rem 0;
    }
    
    .features-header {
        margin-bottom: 2rem;
    }
    
    .features-grid {
        gap: 1.5rem;
    }
    
    .feature-card {
        padding: 2rem 1.5rem;
        border-radius: 20px;
    }
    
    .feature-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
        top: 1.25rem;
        right: 1.25rem;
        border-radius: 10px;
    }
    
    .feature-icon-container {
        width: 70px;
        height: 70px;
        margin-bottom: 1.25rem;
    }
    
    .feature-icon {
        border-radius: 18px;
        padding: 0.875rem;
    }
    
    .feature-icon-glow {
        border-radius: 18px;
    }
    
    .feature-title {
        font-size: 1.125rem;
        margin-bottom: 0.875rem;
    }
    
    .feature-description {
        font-size: 0.875rem;
        line-height: 1.6;
    }
    
    .features-cta {
        margin-top: 2.5rem;
    }
    
    .features-cta .btn-modern-primary {
        width: 100%;
        justify-content: center;
        padding: 1rem 2rem;
        font-size: 1rem;
    }
    
    .decoration-circle {
        display: none;
    }
}

/* ========================================================================
   Special Effects for Different Feature Numbers
   ======================================================================== */

.feature-item:nth-child(1) .feature-card:hover::before {
    background: linear-gradient(90deg, #4F46E5, #7C3AED);
}

.feature-item:nth-child(2) .feature-card:hover::before {
    background: linear-gradient(90deg, #10b981, #059669);
}

.feature-item:nth-child(3) .feature-card:hover::before {
    background: linear-gradient(90deg, #f59e0b, #d97706);
}

.feature-item:nth-child(4) .feature-card:hover::before {
    background: linear-gradient(90deg, #ec4899, #db2777);
}

.feature-item:nth-child(5) .feature-card:hover::before {
    background: linear-gradient(90deg, #06b6d4, #0891b2);
}

.feature-item:nth-child(6) .feature-card:hover::before {
    background: linear-gradient(90deg, #8b5cf6, #7c3aed);
}

/* ========================================================================
   Hover State Enhancements
   ======================================================================== */

@media (hover: hover) {
    .feature-card::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 0;
        background: linear-gradient(180deg, transparent, rgba(79, 70, 229, 0.03));
        transition: height 0.4s ease;
        z-index: 1;
    }
    
    .feature-card:hover::after {
        height: 50%;
    }
}

/* ========================================================================
   Loading State
   ======================================================================== */

.feature-card.loading {
    pointer-events: none;
}

.feature-card.loading .feature-icon {
    animation: pulse-feature 1.5s ease-in-out infinite;
}

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

/* ========================================================================
   Accessibility
   ======================================================================== */

.feature-card:focus {
    outline: 3px solid rgba(79, 70, 229, 0.5);
    outline-offset: 2px;
}

.feature-card:focus:not(:focus-visible) {
    outline: none;
}

@media (prefers-reduced-motion: reduce) {
    .feature-card,
    .feature-icon,
    .feature-icon-glow,
    .feature-number,
    .decoration-circle {
        transition: none;
        animation: none;
    }
    
    .feature-card:hover {
        transform: none;
    }
}

/* ========================================================================
   Print Styles
   ======================================================================== */

@media print {
    .features-section-modern {
        padding: 2rem 0;
    }
    
    .feature-card {
        box-shadow: none;
        border: 1px solid #e5e7eb;
        page-break-inside: avoid;
    }
    
    .features-cta,
    .features-bg-decoration {
        display: none;
    }
}

/* ========================================================================
   Empty State
   ======================================================================== */

.features-grid:empty::after {
    content: 'No features available';
    display: block;
    text-align: center;
    padding: 3rem;
    color: #9ca3af;
    font-size: 1.125rem;
    grid-column: 1 / -1;
}

/* ========================================================================
   Dark Mode Support (Optional)
   ======================================================================== */

@media (prefers-color-scheme: dark) {
    .features-section-modern {
        background: linear-gradient(180deg, #1f2937 0%, #111827 100%);
    }
    
    .feature-card {
        background: #1f2937;
        border-color: #374151;
    }
    
    .feature-title {
        color: #f9fafb;
    }
    
    .feature-description {
        color: #d1d5db;
    }
    
    .feature-icon {
        background: linear-gradient(135deg, #374151, #1f2937);
    }
    
    .feature-number {
        background: linear-gradient(135deg, #374151, #1f2937);
        color: #9ca3af;
    }
}