/* CSS Custom Properties (Design Tokens) */
:root {
    --color-brand-slate: #1E293B;
    --color-brand-slate-light: #334155;
    --color-brand-light: #F0F2EE;
    --color-brand-accent: #004872;
    --color-brand-accent-hover: #006699;
    --color-brand-muted: #94A3B8;
    --font-sans: 'Inter', sans-serif;
    --font-serif: 'Playfair Display', serif;
}

/* Global Base Settings */
html, body {
    background-color: var(--color-brand-light);
    color: var(--color-brand-slate-light);
    scroll-behavior: smooth;
    margin: 0;
    padding: 0;
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Header Styling */
.site-header {
    background-color: #122032 !important;
    border-bottom: 2px solid var(--color-brand-accent) !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

/* Header Navigation Links */
.nav-link {
    color: #FFFFFF;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.3s ease;
    position: relative;
    padding: 4px 0;
}

.nav-link:hover {
    color: #F4F8FF;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: #38BDF8;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* Typography Refinements */
.spm-heading-primary {
    color: var(--color-brand-slate);
    font-family: 'Lora', Georgia, serif;
    line-height: 1.15;
/*    letter-spacing: -0.015em; */
}

.spm-heading-secondary {
    color: var(--color-brand-slate-light);
    line-height: 1.6;
    letter-spacing: 0.01em;
}

/* Smooth Global Transitions */
.spm-btn, .spm-btn-primary, .spm-box, .spm-input {
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), 
                box-shadow 0.35s cubic-bezier(0.4, 0, 0.2, 1), 
                background-color 0.35s ease, 
                border-color 0.35s ease, 
                color 0.35s ease; 
}

/* Scroll Reveal Animations */
.reveal-hidden {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), 
                transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Add slight staggered delays for grid items */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }

/* Button Component Styles */
.spm-btn {
    background-color: #FFFFFF !important;
    color: var(--color-brand-accent) !important;
    padding: 10px 20px;
    font-size: 13px;
    letter-spacing: 1px;
    text-transform: uppercase;
    text-align: center;
    border: 2px solid var(--color-brand-accent) !important;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    text-decoration: none;
    display: inline-block;
    font-weight: 600;
}

.spm-btn:hover {
    background-color: var(--color-brand-accent) !important;
    color: #FFFFFF !important;
    border-color: var(--color-brand-accent) !important;
    box-shadow: 0 6px 16px rgba(0, 72, 114, 0.25);
    transform: translateY(-2px);
}

.spm-btn-primary {
    background-color: var(--color-brand-accent);
    color: #FFFFFF;
    padding: 12px 28px;
    font-size: 13px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    font-weight: 600;
    border-radius: 8px;
    border: 1px solid var(--color-brand-accent);
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0, 72, 114, 0.2);
    display: inline-block;
    text-align: center;
}

.spm-btn-primary:hover {
    background-color: var(--color-brand-accent-hover);
    border-color: var(--color-brand-accent-hover);
    box-shadow: 0 8px 20px rgba(0, 72, 114, 0.3);
    transform: translateY(-2px);
}

/* Scroll-to-Top Button */
#scrollTopBtn {
    background-color: var(--color-brand-accent);
    color: #FFFFFF;
}

#scrollTopBtn:hover {
    background-color: var(--color-brand-accent-hover);
}

/* Card & Box Container Styles */
.spm-box {
    background-color: #FFFFFF !important;
    border: 1px solid rgba(0, 72, 114, 0.08) !important;
    border-radius: 12px !important;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03) !important;
}

.spm-box:hover {
    border-color: rgba(0, 72, 114, 0.25) !important;
    box-shadow: 0 20px 25px -5px rgba(0, 72, 114, 0.1), 0 10px 10px -5px rgba(0, 72, 114, 0.05) !important;
    transform: translateY(-4px); 
}

/* Form Control Styles */
.spm-input {
    width: 100%;
    background-color: #FAFCFF; 
    border: 1px solid #CBD5E1;
    border-radius: 8px;
    padding: 12px 16px;
    color: var(--color-brand-slate);
}

.spm-input:focus {
    outline: none;
    border-color: var(--color-brand-accent);
    background-color: #FFFFFF;
    box-shadow: 0 0 0 3px rgba(0, 72, 114, 0.15); 
}

.spm-input::placeholder {
    color: var(--color-brand-muted);
}

/* Layout Blocks & Tour Wrapper */
.centered-block {
    display: block; 
    width: 80%;     
    margin: 80px auto; 
    font-size: 22px;
    border: none;
    padding: 10px;
    box-sizing: border-box;
    color: var(--color-brand-slate);
}

.tour-wrapper {
    position: relative;
    z-index: 5;
    width: min(100%, calc(65vh * 16 / 8));
    aspect-ratio: 16 / 8;
    margin: 0 auto;
    border: none;
    padding: 10px;
    box-sizing: border-box;
}

.tour-iframe {
    width: 100%; 
    height: 100%; 
    border: 1px solid rgba(0, 72, 114, 0.2); 
    border-radius: 12px; 
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12); 
    pointer-events: auto;
    transition: box-shadow 0.3s ease;
}

.tour-iframe:hover {
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.18);
}

/* Mobile Touch Interaction Overlay */
.tour-overlay {
    position: absolute;
    inset: 10px;
    background: rgba(30, 41, 59, 0.45);
    backdrop-filter: blur(2px);
    border-radius: 12px;
    display: none; /* Hidden by default on desktop */
    align-items: center;
    justify-content: center;
    z-index: 20;
    cursor: pointer;
    transition: opacity 0.4s ease;
}

/* Activate only on mobile/touch devices or narrow screens */
@media (max-width: 768px), (pointer: coarse) {
    .tour-overlay {
        display: flex;
    }
}

.tour-overlay.fade-out {
    opacity: 0;
    pointer-events: none;
}

.tour-overlay-badge {
    background: #FFFFFF;
    color: var(--color-brand-accent);
    padding: 12px 24px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.5px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
    display: flex;
    align-items: center;
    gap: 8px;
    text-transform: uppercase;
}

.button-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 12px; 
    width: min(100%, calc(80vh * 16 / 9)); 
    margin: 20px auto;
    padding: 0 10px;
    box-sizing: border-box;
}

.button-container .spm-btn {
    width: 160px;
    padding: 10px 0;
    position: relative;
    z-index: 10;
}