/* CSS Variables */
:root {
    --primary: #1a73e8;
    --secondary: #0d47a1;
    --accent: #ffeb3b;
    --text-dark: #1a1a1a;
    --text-light: #ffffff;
    --bg-light: #f8fafc;
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.12);
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
    scroll-behavior: smooth;
}

body {
    background: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

body.loaded {
    opacity: 1;
}

/* Header Styles */
header {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    color: var(--text-light);
    padding: 1.5rem 2.5rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.4s ease-out;
    perspective: 1500px;
    transform-style: preserve-3d;
}

header.scrolled {
    padding: 0.9rem 2.5rem;
    background: var(--secondary);
    box-shadow: var(--shadow-lg);
    transform: translateZ(-15px) rotateX(2deg);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-size: 2.2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.5s ease-out;
    transform-style: preserve-3d;
}

.logo:hover {
    transform: scale(1.15) rotateY(20deg) translateZ(30px);
}

.logo i {
    color: var(--accent);
    font-size: 2rem;
    transition: transform 0.5s ease-out;
}

.logo:hover i {
    transform: rotateZ(360deg) scale(1.2);
}

nav {
    display: flex;
    align-items: center;
}

.nav-menu.desktop {
    display: flex;
    gap: 2rem;
    perspective: 1200px;
}

.nav-menu.desktop a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.15rem;
    padding: 0.7rem 1.2rem;
    transition: all 0.5s ease-out;
    transform: translateZ(0) rotateX(0deg);
    position: relative;
    transform-style: preserve-3d;
}

.nav-menu.desktop a:hover, .nav-menu.desktop a.active {
    color: var(--accent);
    transform: translateZ(40px) rotateX(15deg) scale(1.1);
}

.nav-menu.desktop a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background: var(--accent);
    transition: width 0.4s ease-out, left 0.4s ease-out;
    transform: translateZ(-5px);
}

.nav-menu.desktop a:hover::after, .nav-menu.desktop a.active::after {
    width: 100%;
    left: 0;
}

.hamburger {
    display: none;
    font-size: 2.2rem;
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.5s ease-out;
    transform-style: preserve-3d;
}

.hamburger:hover {
    color: var(--accent);
    transform: rotateY(180deg) scale(1.15);
}

/* Mobile Nav Menu */
.nav-menu.mobile {
    display: none;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: linear-gradient(135deg, var(--secondary), #0a2e6a);
    padding: 5rem 2.5rem 2rem;
    box-shadow: var(--shadow-lg);
    transform-origin: top;
    transform: rotateX(-90deg) translateZ(-150px);
    transition: transform 0.7s ease-out;
    z-index: 999;
    align-items: center;
    justify-content: center;
}

.nav-menu.mobile.active {
    display: flex;
    transform: rotateX(0deg) translateZ(0);
}

.nav-menu.mobile .close-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 2.2rem;
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.5s ease-out;
    transform-style: preserve-3d;
}

.nav-menu.mobile .close-btn:hover {
    color: var(--accent);
    transform: rotateZ(90deg) scale(1.25);
}

.nav-menu.mobile a {
    font-size: 1.6rem;
    padding: 1.8rem;
    color: var(--text-light);
    text-decoration: none;
    transition: all 0.5s ease-out;
    transform: translateZ(0) rotateY(0deg);
    position: relative;
    transform-style: preserve-3d;
}

.nav-menu.mobile a:hover, .nav-menu.mobile a.active {
    transform: translateZ(50px) rotateY(15deg) scale(1.15);
    color: var(--accent);
}

.nav-menu.mobile a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background: var(--accent);
    transition: width 0.4s ease-out, left 0.4s ease-out;
    transform: translateZ(-5px);
}

.nav-menu.mobile a:hover::after, .nav-menu.mobile a.active::after {
    width: 100%;
    left: 0;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #e8f0fe 0%, var(--bg-light) 100%);
    text-align: center;
    padding: 10rem 2.5rem 7rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
    perspective: 1200px;
}

.hero::before {
    content: '';
    position: absolute;
    top: -60%;
    left: -60%;
    width: 220%;
    height: 220%;
    background: radial-gradient(circle, rgba(26, 115, 232, 0.18), transparent);
    animation: pulse 14s infinite ease-in-out;
    z-index: -1;
}

.hero h1 {
    font-size: 4.5rem;
    color: var(--primary);
    margin-bottom: 1.8rem;
    font-weight: 700;
    text-shadow: 0 3px 12px rgba(0, 0, 0, 0.1);
    transform: translateZ(0);
    transition: transform 0.6s ease-out;
}

.hero h1:hover {
    transform: translateZ(60px) rotateX(12deg);
}

.hero p {
    font-size: 1.6rem;
    color: var(--text-dark);
    max-width: 950px;
    margin: 0 auto 3rem;
    transform: translateZ(0);
    transition: transform 0.6s ease-out;
}

.hero p:hover {
    transform: translateZ(40px);
}

.cta-button {
    background: var(--primary);
    color: var(--text-light);
    padding: 1.3rem 3.5rem;
    border: none;
    border-radius: 50px;
    font-size: 1.4rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.6s ease-out;
    box-shadow: var(--shadow-sm);
    transform: translateZ(0);
    transform-style: preserve-3d;
}

.cta-button:hover {
    background: var(--secondary);
    transform: translateZ(25px) scale(1.1) rotateY(15deg);
    box-shadow: var(--shadow-lg);
}

/* Features Section */
.features {
    padding: 7rem 2.5rem;
    width: 100%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 3.5rem;
    background: #fff;
    perspective: 1200px;
}

.feature-card {
    padding: 2.8rem;
    border-radius: 25px;
    box-shadow: var(--shadow-sm);
    text-align: center;
    background: #fff;
    transition: all 0.7s ease-out;
    transform: translateY(50px) rotateX(-15deg);
    opacity: 0;
    transform-style: preserve-3d;
}

.feature-card.visible {
    transform: translateY(0) rotateX(0deg);
    opacity: 1;
}

.feature-card:hover {
    transform: translateY(-25px) translateZ(50px) rotateX(5deg) scale(1.03);
    box-shadow: var(--shadow-lg);
}

.feature-card i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
    transition: transform 0.5s ease-out;
}

.feature-card:hover i {
    transform: scale(1.2) rotateZ(360deg);
}

.feature-card h3 {
    color: var(--primary);
    font-size: 2rem;
    margin-bottom: 1.2rem;
    font-weight: 600;
}

.feature-card p {
    color: #444;
    font-size: 1.15rem;
}

/* Contact Employee Section */
.contact-employee {
    background: linear-gradient(135deg, #f4f7fa, #e0e7ff);
    padding: 7rem 2.5rem;
    text-align: center;
    width: 100%;
    margin: 0 auto;
    transform: translateY(50px) rotateX(-15deg);
    opacity: 0;
    perspective: 1200px;
}

.contact-employee.visible {
    transform: translateY(0) rotateX(0deg);
    opacity: 1;
    transition: all 0.8s ease-out;
}

.contact-employee h2 {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1.8rem;
    font-weight: 700;
    text-shadow: 0 3px 12px rgba(0, 0, 0, 0.05);
    transform: translateZ(0);
    transition: transform 0.6s ease-out;
}

.contact-employee h2:hover {
    transform: translateZ(40px) rotateX(5deg);
}

.contact-employee p {
    font-size: 1.4rem;
    color: var(--text-dark);
    max-width: 1050px;
    margin: 0 auto 3rem;
}

.contact-employee a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    padding-bottom: 3px;
    position: relative;
    transition: all 0.5s ease-out;
}

.contact-employee a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background: var(--primary);
    bottom: 0;
    left: 0;
    transition: width 0.5s ease-out;
}

.contact-employee a:hover::after {
    width: 100%;
}

.contact-employee a:hover {
    color: var(--secondary);
    transform: translateZ(15px);
}

/* Footer Styles */
footer {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    color: var(--text-light);
    padding: 6rem 2.5rem 2.5rem;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3.5rem;
}

.footer-section h4 {
    font-size: 1.6rem;
    margin-bottom: 1.6rem;
    font-weight: 600;
    position: relative;
}

.footer-section h4::after {
    content: '';
    width: 70px;
    height: 3px;
    background: var(--accent);
    position: absolute;
    bottom: -10px;
    left: 0;
    transition: transform 0.5s ease-out;
}

.footer-section h4:hover::after {
    transform: scaleX(1.2);
}

.footer-section p, .footer-links a {
    font-size: 1.05rem;
    opacity: 0.9;
    line-height: 1.8;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: all 0.5s ease-out;
    display: flex;
    align-items: center;
    gap: 0.7rem;
}

.footer-links a:hover {
    color: var(--accent);
    transform: translateZ(15px) rotateX(5deg);
}

.footer-links a i {
    font-size: 1.1rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 3.5rem;
    font-size: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.25);
    opacity: 0.85;
}

/* Animations */
@keyframes fadeInUp {
    from { transform: translateY(60px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.75; }
    50% { transform: scale(1.15); opacity: 1; }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero h1 { font-size: 3.8rem; }
    .hero p { font-size: 1.4rem; }
    .features { gap: 2.5rem; }
    .contact-employee h2 { font-size: 2.7rem; }
}

@media (max-width: 768px) {
    .hamburger { display: block; }
    .nav-menu.desktop { display: none; }
    .nav-menu.mobile { display: none; }
    .header-container { padding: 0 1.5rem; }
    .logo { font-size: 1.9rem; }
    .hero { padding: 7rem 1.5rem 5rem; }
    .hero h1 { font-size: 2.6rem; }
    .hero p { font-size: 1.1rem; }
    .cta-button { padding: 1rem 2.5rem; font-size: 1.2rem; }
    .features { padding: 5rem 1.5rem; }
    .feature-card { padding: 2rem; }
    .contact-employee { padding: 5rem 1.5rem; }
    .footer-container { gap: 2rem; }
}

@media (max-width: 480px) {
    .logo { font-size: 1.6rem; }
    .hamburger { font-size: 1.9rem; }
    .nav-menu.mobile a { font-size: 1.4rem; padding: 1.5rem; }
    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 1rem; }
    .cta-button { padding: 0.8rem 2rem; font-size: 1.1rem; }
    .feature-card h3 { font-size: 1.7rem; }
    .contact-employee h2 { font-size: 2.2rem; }
    .contact-employee p { font-size: 1.1rem; }
    .footer-section h4 { font-size: 1.4rem; }
}