/* GLOBAL RESET & THEME */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --sap-blue: #004a99;
    --sap-gold: #f0ab00;
    --text-dark: #1f2937;
}

body {
    font-family: 'Segoe UI', sans-serif;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden;
}

main { flex: 1; }

.container { max-width: 1200px; margin: auto; padding: 0 20px; width: 100%; }

/* HEADER */
.site-header { padding: 15px 0; border-bottom: 1px solid #eee; }
.nav-container { display: flex; justify-content: space-between; align-items: center; }
.logo-text { font-size: 26px; font-weight: 800; color: var(--sap-blue); text-decoration: none; }
.logo-tagline { font-size: 10px; font-weight: 700; color: var(--sap-gold); display: block; }

nav a { text-decoration: none; color: var(--text-dark); font-weight: 600; margin-left: 25px; }
nav a.active { color: var(--sap-blue); border-bottom: 2px solid var(--sap-blue); padding-bottom: 5px; }

/* FOOTER */
.site-footer { 
    background: #001e3d; 
    color: #fff; 
    text-align: center; 
    padding: 30px 0; 
    font-size: 14px;
}

/* PERFECT ALIGNMENT - NO CHECKBOX VISIBLE */
.site-header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 65px;
    position: relative;
}

.logo {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    align-items: flex-start;
}

.logo-text {
    font-size: 22px;
    font-weight: 800;
    color: #004a99;
    line-height: 1;
}

.logo-tagline {
    font-size: 10px;
    color: #666;
    margin-top: 1px;
}

/* DESKTOP MENU */
.nav-desktop {
    display: flex;
    gap: 35px;
    align-items: center;
}

.nav-link {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    padding: 10px 0;
    position: relative;
    font-size: 15px;
}

.nav-link:hover,
.nav-link.active {
    color: #28a745;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: #28a745;
}

/* MOBILE HAMBURGER - HIDDEN CHECKBOX */
.mobile-menu-toggle {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    visibility: hidden;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    cursor: pointer;
    padding: 0;
}

.mobile-menu-btn span {
    width: 100%;
    height: 2.5px;
    background: #004a99;
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
}

/* MOBILE MENU */
.nav-mobile {
    position: fixed;
    top: 0;
    right: -280px;
    width: 280px;
    height: 100vh;
    background: #fff;
    box-shadow: -4px 0 20px rgba(0,0,0,0.15);
    transition: right 0.3s ease;
    z-index: 999;
    padding: 80px 20px;
}

.nav-link-mobile {
    display: block;
    color: #004a99;
    text-decoration: none;
    font-size: 18px;
    font-weight: 600;
    padding: 18px 0;
    border-bottom: 1px solid #eee;
    transition: padding 0.3s;
}

.nav-link-mobile:hover {
    color: #28a745;
    padding-left: 15px;
}

.nav-link-mobile.active {
    color: #28a745;
}

/* HAMBURGER TO X */
.mobile-menu-toggle:checked ~ .mobile-menu-btn span:nth-child(1) {
    transform: rotate(45deg) translate(3px, 3px);
}

.mobile-menu-toggle:checked ~ .mobile-menu-btn span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle:checked ~ .mobile-menu-btn span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
}

/* SHOW MENU */
.mobile-menu-toggle:checked ~ .nav-mobile {
    right: 0;
}

/* MOBILE */
@media screen and (max-width: 768px) {
    .nav-desktop {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-container {
        padding: 12px 15px;
    }
    
    .logo-text {
        font-size: 20px;
    }
}

.whatsapp-icon-btn {
    position: fixed;
    bottom: 25px;
    right: 25px;
    width: 60px;
    height: 60px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 9999;
    border: none;
    text-decoration: none;
}

.whatsapp-icon-btn:hover {
    background: #128C7E;
    transform: scale(1.1) translateY(-3px);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.6);
}

.whatsapp-icon-btn svg {
    width: 28px;
    height: 28px;
    color: white;
    filter: drop-shadow(0 1px 2px rgba(0,0,0,0.3));
}

@media (max-width: 768px) {
    .whatsapp-icon-btn {
        bottom: 20px;
        right: 20px;
        width: 55px;
        height: 55px;
    }
    .whatsapp-icon-btn svg {
        width: 26px;
        height: 26px;
    }
}