/* Custom Styles - Professional Edition */

/* Color Variables */
:root {
    --congo-green: #009543;
    --congo-yellow: #FBDE4A;
    --congo-red: #DC241F;
    --brand-dark: #0f3460;
    --brand-primary: #1a5f7a;
    --brand-accent: #e94560;
}

/* Base Animations */
.fade-in {
    animation: fadeIn 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Scroll Animations */
.scroll-hidden {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.scroll-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger delays */
.delay-100 { transition-delay: 100ms; animation-delay: 100ms; }
.delay-200 { transition-delay: 200ms; animation-delay: 200ms; }
.delay-300 { transition-delay: 300ms; animation-delay: 300ms; }

/* Congo Accent Strip (Subtle & Professional) */
.congo-gradient-border {
    position: relative;
}
.congo-gradient-border::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--congo-green), var(--congo-yellow), var(--congo-red));
}

/* Professional Button Styles */
.btn-primary {
    background-color: var(--brand-accent);
    color: white;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--congo-green), var(--congo-yellow), var(--congo-red));
    transition: width 0.4s ease;
    z-index: -1;
    opacity: 0.9;
}

.btn-primary:hover::before {
    width: 100%;
}

.btn-primary:hover {
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
    transform: translateY(-2px);
}

/* Card Styles - Clean & Corporate */
.pro-card {
    background: white;
    border: 1px solid #e2e8f0;
    transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.pro-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(15, 52, 96, 0.08);
    border-color: var(--brand-primary);
}

.pro-card .card-img-container {
    overflow: hidden;
}

.pro-card .card-img {
    transition: transform 0.6s ease;
}

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

/* Subtle Shimmer (Professional) */
.shimmer-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.1) 50%, rgba(255,255,255,0) 100%);
    transform: translateX(-100%);
    z-index: 2;
    pointer-events: none;
}

.pro-card:hover .shimmer-overlay {
    animation: shimmerPro 0.8s;
}

@keyframes shimmerPro {
    100% { transform: translateX(100%); }
}

/* Inputs */
.form-input {
    transition: all 0.3s;
    border: 1px solid #cbd5e1;
}
.form-input:focus {
    border-color: var(--brand-accent);
    box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.1);
}

/* Floating WhatsApp (Cleaner) */
.whatsapp-float {
    transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 25px rgba(37, 211, 102, 0.4);
}

/* Typography Enhancements */
h1, h2, h3, h4, h5, h6 {
    letter-spacing: -0.02em;
}

/* Section Separator */
.section-separator {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--congo-green), var(--congo-yellow), var(--congo-red));
    border-radius: 2px;
}