/* 
   Pragati Enterprise - Core Stylesheet
   Theme: Modern Industrial (Blue, Slate, White, and Orange)
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
    /* Color Palette */
    --primary: #0F52BA;        /* Sapphire Blue */
    --primary-dark: #0A3D8C;   /* Dark Blue */
    --primary-light: #E0ECFB;  /* Light Blue tint */
    --secondary: #0F172A;      /* Deep Slate/Dark Gray */
    --secondary-light: #1E293B;/* Slate Gray for secondary backgrounds */
    --accent: #F97316;         /* Safety Orange */
    --accent-hover: #EA580C;   /* Darker Orange */
    --text-dark: #0F172A;      /* Main text */
    --text-muted: #475569;     /* Subtext */
    --text-light: #F8FAFC;     /* White/Off-white text */
    --bg-light: #F8FAFC;       /* Light section background */
    --bg-white: #FFFFFF;       /* White background */
    
    /* Gradients */
    --grad-primary: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    --grad-accent: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
    --grad-dark: linear-gradient(135deg, var(--secondary) 0%, #1E293B 100%);
    --grad-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.7) 0%, rgba(255, 255, 255, 0.3) 100%);
    --grad-blue-orange: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-display: 'Outfit', sans-serif;
    
    /* Spacing & Layout */
    --max-width: 1200px;
    --header-height: 80px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 4px 20px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 10px 30px rgba(15, 23, 42, 0.12);
    --shadow-glass: 0 8px 32px 0 rgba(15, 23, 42, 0.06);
    --shadow-orange: 0 4px 15px rgba(249, 115, 22, 0.3);
    
    /* Borders & Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    --border-glass: 1px solid rgba(255, 255, 255, 0.4);
}

/* Global Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--text-dark);
    background-color: var(--bg-white);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    color: var(--secondary);
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

/* Layout Utilities */
.section {
    padding: 100px 0;
    position: relative;
}

.section-bg-light {
    background-color: var(--bg-light);
}

.section-bg-dark {
    background-color: var(--secondary);
    color: var(--text-light);
}

.section-bg-dark h2 {
    color: var(--text-light);
}

.container {
    width: 90%;
    max-width: var(--max-width);
    margin: 0 auto;
}

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    align-items: center;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 60px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-header .tag {
    display: inline-block;
    color: var(--accent);
    text-transform: uppercase;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 12px;
    position: relative;
    padding-left: 20px;
}

.section-header .tag::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 3px;
    background-color: var(--accent);
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    position: relative;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.section-bg-dark .section-header p {
    color: #94A3B8;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    gap: 10px;
}

.btn-primary {
    background: var(--grad-primary);
    color: var(--text-light);
    box-shadow: 0 4px 15px rgba(15, 82, 186, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(15, 82, 186, 0.4);
    opacity: 0.95;
}

.btn-accent {
    background: var(--grad-accent);
    color: var(--text-light);
    box-shadow: var(--shadow-orange);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(249, 115, 22, 0.5);
    opacity: 0.95;
}

.btn-secondary {
    background-color: transparent;
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--text-light);
}

.btn-secondary:hover {
    background-color: var(--bg-white);
    color: var(--secondary);
    border-color: var(--bg-white);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background-color: var(--primary);
    color: var(--text-light);
    transform: translateY(-2px);
}

/* Header & Navigation */
header {
    width: 100%;
    height: var(--header-height);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

header.sticky {
    height: 70px;
    background-color: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-md);
}

header.sticky .logo h1 {
    font-size: 1.5rem;
}

.nav-container {
    width: 90%;
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 38px;
    height: 38px;
    background: var(--grad-accent);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-weight: 800;
    font-family: var(--font-display);
    font-size: 1.4rem;
}

.logo h1 {
    color: var(--text-light);
    font-size: 1.6rem;
    font-weight: 700;
    font-family: var(--font-display);
    letter-spacing: -0.5px;
    transition: var(--transition);
}

.logo h1 span {
    color: var(--accent);
}

.nav-menu {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-item a {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    padding: 8px 0;
}

.nav-item a:hover,
.nav-item.active a {
    color: var(--accent);
}

.nav-item a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent);
    transition: var(--transition);
}

.nav-item a:hover::after,
.nav-item.active a::after {
    width: 100%;
}

.nav-cta {
    margin-left: 10px;
}

.nav-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--text-light);
    cursor: pointer;
}

/* Glassmorphism Styling */
.glass-card {
    background: var(--grad-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: var(--border-glass);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-glass);
    padding: 35px;
    transition: var(--transition);
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.glass-card-dark {
    background: rgba(30, 41, 59, 0.45);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
    padding: 35px;
    transition: var(--transition);
}

.glass-card-dark:hover {
    transform: translateY(-5px);
    border-color: rgba(249, 115, 22, 0.3);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

/* Page Header (Subpages) */
.page-header {
    height: 300px;
    background: linear-gradient(rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.95)), 
                url('https://images.unsplash.com/photo-1586528116311-ad8dd3c8310d?auto=format&fit=crop&q=80&w=1920') no-repeat center center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: var(--header-height);
    color: var(--text-light);
}

.page-header-content h1 {
    color: var(--text-light);
    font-size: 3rem;
    margin-bottom: 10px;
}

.breadcrumbs {
    display: flex;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
}

.breadcrumbs a:hover {
    color: var(--accent);
}

.breadcrumbs span {
    color: var(--accent);
}

/* Footer Section */
footer {
    background-color: var(--secondary);
    color: #94A3B8;
    padding: 80px 0 30px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 2fr;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-brand .logo-footer {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.footer-brand .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 1.1rem;
}

.footer-brand h2 {
    color: var(--text-light);
    font-size: 1.4rem;
}

.footer-brand h2 span {
    color: var(--accent);
}

.footer-brand p {
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.footer-col h3 {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 8px;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--accent);
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #94A3B8;
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: var(--accent);
    padding-left: 5px;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.footer-contact li svg {
    width: 20px;
    height: 20px;
    color: var(--accent);
    flex-shrink: 0;
    margin-top: 3px;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-icon {
    width: 36px;
    height: 36px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 1.1rem;
    transition: var(--transition);
}

.social-icon:hover {
    background-color: var(--accent);
    color: var(--text-light);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(249, 115, 22, 0.4);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

.footer-bottom p {
    margin: 0;
}

.footer-bottom-links a {
    margin-left: 20px;
}

.footer-bottom-links a:hover {
    color: var(--accent);
}

/* Scroll To Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: -60px; /* Hidden initially offscreen */
    width: 48px;
    height: 48px;
    background: var(--grad-accent);
    color: var(--text-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-orange);
    z-index: 99;
    transition: var(--transition);
    border: none;
}

.scroll-to-top.show {
    right: 30px;
}

.scroll-to-top:hover {
    transform: translateY(-5px);
    opacity: 0.9;
}

.scroll-to-top svg {
    width: 24px;
    height: 24px;
}

/* Animated Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--secondary);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
}

.loader-circle {
    width: 60px;
    height: 60px;
    border: 5px solid rgba(255, 255, 255, 0.05);
    border-top: 5px solid var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px auto;
}

.loader-text {
    font-family: var(--font-display);
    color: var(--text-light);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 1px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Lightbox Modal (Gallery) */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.95);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox.show {
    display: flex;
    opacity: 1;
}

.lightbox-content {
    position: relative;
    max-width: 85%;
    max-height: 80%;
}

.lightbox-img {
    max-width: 100%;
    max-height: 80vh;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    border: 3px solid rgba(255, 255, 255, 0.1);
}

.lightbox-caption {
    color: var(--text-light);
    text-align: center;
    margin-top: 15px;
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 500;
}

.lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 2rem;
    cursor: pointer;
    transition: var(--transition);
}

.lightbox-close:hover {
    color: var(--accent);
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--text-light);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.lightbox-nav:hover {
    background: var(--accent);
}

.lightbox-prev {
    left: -70px;
}

.lightbox-next {
    right: -70px;
}

/* Animations engine classes (AOS-style) */
[data-aos] {
    opacity: 0;
    transition-property: transform, opacity;
    transition-duration: 0.8s;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

[data-aos="fade-up"] {
    transform: translateY(40px);
}

[data-aos="fade-in"] {
    transform: scale(0.95);
}

[data-aos="slide-left"] {
    transform: translateX(40px);
}

[data-aos="slide-right"] {
    transform: translateX(-40px);
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translate(0) scale(1);
}

/* Contact Modal (Form Success) */
.form-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}

.form-modal.show {
    display: flex;
}

.form-modal-content {
    background-color: var(--bg-white);
    padding: 40px;
    border-radius: var(--radius-lg);
    max-width: 450px;
    width: 90%;
    text-align: center;
    box-shadow: var(--shadow-lg);
    border-top: 6px solid var(--accent);
}

.form-modal-icon {
    width: 60px;
    height: 60px;
    background-color: #DEF7EC;
    color: #0E9F6E;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px auto;
    font-size: 1.8rem;
}

.form-modal h3 {
    margin-bottom: 10px;
    font-size: 1.5rem;
}

.form-modal p {
    color: var(--text-muted);
    margin-bottom: 25px;
}

/* Lazy Loading placeholder */
.lazy-bg {
    background-color: #E2E8F0;
    position: relative;
    overflow: hidden;
}

.lazy-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: loading-shimmer 1.5s infinite;
}

@keyframes loading-shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}