/**
 * GVK UPVC Works - Custom Styles
 * Premium design system with brand colors
 */

/* ===================================
   CUSTOM PROPERTIES
   =================================== */
:root {
    --primary-50: #fef2f2;
    --primary-500: #DA251C; /* GVK Maximum Red */
    --primary-600: #b91c1c;
    --primary-900: #450a0a;
    
    --secondary-500: #1F1A17; /* GVK Eerie Black */
    --secondary-600: #181412;
    --secondary-900: #000000;
    
    --dark-900: #0f172a;
    --dark-800: #1e293b;
    --dark-700: #334155;
    --dark-600: #475569;
    --dark-300: #cbd5e1;
    --dark-200: #e2e8f0;
    --dark-50: #f8fafc;
}

/* ===================================
   SMOOTH SCROLLING
   =================================== */
html {
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
}

/* ===================================
   HEADER SCROLL EFFECT (Floating Capsule)
   =================================== */
#mainHeader {
    background: transparent !important;
    backdrop-filter: none !important;
    box-shadow: none !important;
}

/* The Capsule Container */
#navBar {
    /* Initial state set by utility classes in HTML: rounded-full */
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background: transparent;
    border: none;
    box-shadow: none;
}

/* Scrolled State & Inner Pages: Solid White Capsule */
#mainHeader.scrolled #navBar,
#mainHeader.force-solid #navBar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.05); /* Darker border for visibility on white bg */
    box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.1);
}

/* Scrolled: Move capsule up and tighten padding */
#mainHeader.scrolled #navBar {
    transform: translateY(-5px); 
}

#mainHeader.scrolled #navContainer {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

/* Scrolled-specific: Hide Top Bar smoothly */
#mainHeader.scrolled #topBar {
    height: 0;
    opacity: 0;
    margin: 0;
    overflow: hidden;
}

/* Base Text Colors (Initial Transparent State) */
#mainHeader .nav-link {
    color: #ffffff;
    text-shadow: 0 1px 3px rgba(0,0,0,0.3); /* Enhanced readability */
}

#mainHeader .nav-link:hover {
    color: #ffffff;
    background-color: transparent;
    text-shadow: 0 0 15px rgba(255,255,255,0.8);
}

#mainHeader #mobileMenuBtn {
    color: #ffffff;
    filter: drop-shadow(0 1px 2px rgba(0,0,0,0.5));
}

#mainHeader .nav-link svg {
    color: rgba(255, 255, 255, 0.9);
    filter: drop-shadow(0 1px 2px rgba(0,0,0,0.3));
}
}

/* Scrolled & Inner Pages: Text Colors */
#mainHeader.scrolled .nav-link,
#mainHeader.force-solid .nav-link {
    color: var(--dark-800);
}

#mainHeader.scrolled .nav-link:hover,
#mainHeader.force-solid .nav-link:hover {
    color: var(--primary-600);
    background-color: var(--primary-50);
}

#mainHeader.scrolled .nav-link:hover,
#mainHeader.force-solid .nav-link:hover {
    color: var(--primary-600);
    background-color: var(--primary-50);
}

/* Mobile Menu Button */
#mainHeader.scrolled #mobileMenuBtn,
#mainHeader.force-solid #mobileMenuBtn {
    color: var(--dark-800);
}

/* Logo Handling */
#mainHeader img[alt="GVK UPVC Works Logo"] {
    transition: filter 0.3s ease;
    filter: brightness(0) invert(1) drop-shadow(0 2px 8px rgba(0,0,0,0.6)); /* Stronger shadow for visibility */
}

#mainHeader.scrolled img[alt="GVK UPVC Works Logo"],
#mainHeader.force-solid img[alt="GVK UPVC Works Logo"] {
    filter: none;
}

/* Dropdown Arrows */
#mainHeader.scrolled .nav-link svg,
#mainHeader.force-solid .nav-link svg {
    color: var(--dark-600);
}

/* Inner Pages Specifics */
/* Ensure Top Bar is visible on inner pages but dark for contrast */
#mainHeader.force-solid:not(.scrolled) #topBar {
    background-color: var(--dark-900);
    color: white;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

/* Ensure Top Bar is transparent on Home Page */
#mainHeader[data-transparent-at-top="true"]:not(.scrolled) #topBar {
    background-color: transparent !important;
    border-bottom: none !important;
}

/* ===================================
   CUSTOM ANIMATIONS
   =================================== */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

.animate-float-slow {
    animation: float 6s ease-in-out infinite;
}

.animate-float-delayed {
    animation: float 6s ease-in-out 3s infinite;
}

/* ===================================
   UTILITIES
   =================================== */
.text-gradient {
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-image: linear-gradient(to right, var(--primary-500), var(--secondary-500));
}

.bg-gradient-primary {
    background-image: linear-gradient(to right, var(--primary-500), var(--primary-600));
}

.bg-gradient-secondary {
    background-image: linear-gradient(to right, var(--secondary-500), var(--secondary-600));
}

.cta-logo-frame {
    --cta-angle: 150deg;
    background: conic-gradient(from var(--cta-angle), #ec4899, #d946ef, #8b5cf6, #06b6d4, #0ea5e9, #ec4899);
}

.cta-section {
    background: linear-gradient(135deg, #ec4899 0%, #d946ef 25%, #8b5cf6 50%, #06b6d4 75%, #0ea5e9 100%);
}

.cta-section-overlay {
    background: radial-gradient(circle at top left, rgba(255, 255, 255, 0.05) 0, transparent 55%),
                radial-gradient(circle at bottom right, rgba(255, 255, 255, 0.03) 0, transparent 55%);
}

.cta-inner {
    background: linear-gradient(145deg, rgba(236, 72, 153, 0.16), rgba(217, 70, 239, 0.16), rgba(14, 165, 233, 0.16));
}

.cta-point {
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.22), rgba(139, 92, 246, 0.22), rgba(14, 165, 233, 0.22));
    border: 1px solid rgba(236, 72, 153, 0.45);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 2.75rem;
    border-radius: 9999px;
    background: linear-gradient(90deg, #06b6d4, #0ea5e9, #0369a1);
    color: #ffffff;
    font-weight: 700;
    font-size: 0.95rem;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.55);
    text-decoration: none;
    border: 2px solid rgba(255, 255, 255, 0.9);
    transition: transform 0.25s ease, box-shadow 0.25s ease, opacity 0.25s ease;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 24px 55px rgba(15, 23, 42, 0.7);
}

.cta-button:active {
    transform: translateY(0);
    box-shadow: 0 14px 30px rgba(15, 23, 42, 0.6);
}

/* Glassmorphism Card */
.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--dark-300);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-500);
}

.process-grid {
    align-items: stretch;
}

.process-grid .process-card {
    height: 100%;
}

.site-footer {
    background: linear-gradient(180deg, #020617 0%, #020617 45%, #020617 100%);
}

.footer-gradient-overlay {
    background:
        radial-gradient(circle at top left, rgba(236, 72, 153, 0.24) 0, transparent 55%),
        radial-gradient(circle at top right, rgba(14, 165, 233, 0.18) 0, transparent 55%);
}

.footer-bottom {
    border-top: 1px solid rgba(30, 64, 175, 0.75);
    background: #020617;
}

@media (max-width: 768px) {
    .about-section {
        padding-top: 3rem;
        padding-bottom: 3rem;
        overflow: visible;
    }

    .about-section .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .expertiseSwiper {
        max-width: 100%;
    }
}