/* --- Global Theme Variables --- */
:root {
    --bg-color: #ffffff;
    --text-color: #1f2937;
    --heading-color: #0f4c81;
    --muted-text: #24435c;
    --card-bg: #ffffff;
    --card-border: #e2e8f0;
    --footer-bg: #f8fafc;
    --btn-bg: #0f4c81;
    --btn-text: #ffffff;
    --btn-secondary-border: #0f4c81;
    --btn-secondary-text: #0f4c81;
    --toggle-bg: #e2e8f0;
    --toggle-text: #1f2937;
    --input-bg: #ffffff;
    --input-border: #cbd5e1;
    --modal-overlay: rgba(0, 0, 0, 0.6);
    --nav-bg: rgba(255, 255, 255, .90);
    --hero-bg-1: #e0f2fe;
    --hero-bg-2: #f0f9ff;
    --hero-pattern: rgba(15, 76, 129, 0.05);
    --logo-filter: none;
    --hero-text: #0a0f1d;
    --hero-subtext: #0f2338;
}

[data-theme="dark"] {
    --bg-color: #0f172a;
    --text-color: #f3f4f6;
    --heading-color: #38bdf8;
    --muted-text: #dbeafe;
    --card-bg: #1e293b;
    --card-border: #334155;
    --footer-bg: #0b1120;
    --btn-bg: #38bdf8;
    --btn-text: #0f172a;
    --btn-secondary-border: #38bdf8;
    --btn-secondary-text: #38bdf8;
    --toggle-bg: #334155;
    --toggle-text: #f3f4f6;
    --input-bg: #0f172a;
    --input-border: #334155;
    --modal-overlay: rgba(0, 0, 0, 0.8);
    --nav-bg: rgba(15, 23, 42, .88);
    --hero-bg-1: #0f172a;
    --hero-bg-2: #1e293b;
    --hero-pattern: rgba(56, 189, 248, 0.05);
    --logo-filter: brightness(0) invert(1);
    --hero-text: #ffffff;
    --hero-subtext: #dbeafe;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Inter", sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 18px;
    line-height: 1.6;
    transition: background-color .3s ease, color .3s ease;
}

/* --- Fixed Smooth-Scroll Navigation Header --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px;
    background: var(--nav-bg);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--card-border);
    z-index: 1000;
    display: flex;
    align-items: center;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.nav-container {
    max-width: 1280px;
    width: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-sizing: border-box;
}

.nav-logo img {
    height: 38px;
    width: auto;
    filter: var(--logo-filter);
    transition: filter 0.3s ease;
}

.nav-links {
    display: flex;
    gap: 25px;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: bold;
    font-size: 16px;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--heading-color);
}

.nav-links a.active{
    color: var(--heading-color);
}

.theme-toggle-btn {
    background: var(--toggle-bg);
    color: var(--toggle-text);
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: bold;
    font-size: 13px;
    transition: all 0.3s ease;
}

.theme-toggle-btn:hover {
    opacity: 0.9;
    transform: scale(1.05);
}

/* --- High-Tech AI Overlay Hero Section --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 20px 80px;
    overflow: hidden;

    background:
        linear-gradient(
            90deg,
            rgba(15,23,42,0.76) 0%,
            rgba(15,23,42,0.72) 35%,
            rgba(15,23,42,0.35) 60%,
            rgba(15,23,42,0.15) 100%
        ),
        url("hero.png") center center / cover no-repeat;

    transition: background .4s ease;
}

.hero h1{
    max-width:700px;

    margin:0;

    font-size:5rem;
    font-weight:800;
    line-height:1.05;

    color:var(--hero-text);
}

[data-theme="light"] .hero h1{
    color:#0f172a;
}

/* --- Balanced Light Theme Overlay --- */
[data-theme="light"] .hero{
    background:
        linear-gradient(
            90deg,
            rgba(255,255,255,.70) 0%,
            rgba(255,255,255,.52) 35%,
            rgba(255,255,255,.18) 60%,
            rgba(255,255,255,0) 100%
        ),
        url("hero.png") center center / cover no-repeat;
}

/* Smooth transition fade into the page body */
.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        transparent 70%,
        var(--bg-color) 100%
    );
    pointer-events: none;
}

.hero-content{
    position:relative;
    z-index:2;
    max-width:1200px;
    width:100%;
    margin:auto;
    padding:0 20px;
    box-sizing:border-box;
    text-align:left;
}

.hero-description{
    max-width:760px;
    margin:18px 0 55px;
    text-align:left;

    font-size:1.08rem;
    line-height:1.8;

    color:var(--hero-subtext);

    opacity:.92;
}

.logo{
    width:min(400px,85%);
    height:auto;
    margin-bottom:30px;
    filter:var(--logo-filter);
    transition:.3s ease;
}

.tagline{
    max-width:760px;
    margin:35px 0 20px;

    font-size:1.35rem;
    line-height:1.6;
    font-weight:600;

    color:var(--hero-subtext);

    text-align:left;
}
.cta-group{
    display:flex;
    justify-content:flex-start;
    gap:16px;
    flex-wrap:wrap;
}

.button{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    padding:16px 34px;
    background:var(--btn-bg);
    color:var(--btn-text);
    text-decoration:none;
    border:none;
    border-radius:10px;
    font-size:16px;
    font-weight:600;
    cursor:pointer;
    transition:all .25s ease;
    box-shadow:0 12px 30px rgba(15,23,42,.22);
}

.button.secondary{
    background:transparent;
    color:var(--btn-secondary-text);
    border:2.5px solid var(--btn-secondary-border);
}

.button:hover{
    transform:translateY(-3px);
}

/* --- Main Layout Sections --- */
.container {
    max-width: 1280px;
    margin: auto;
    padding: 40px 20px 80px;
}

.section-content{
    max-width:820px;
    text-align:left;
}

.section{
    padding:80px 0;
    scroll-margin-top:80px;
    text-align:left;
}

.section h2{
    text-align:left;
}

.about-text{
    max-width:800px;
    margin:0;
    line-height:1.8;
    font-size:1.1rem;
    color:var(--text-color);
}

/* --- Service Cards & SVG Icons --- */
.services {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 25px;
}

.card {
    opacity:0;
    flex:1 1 320px;
    max-width:360px;
    transform:translateY(30px);
    padding: 35px 25px;
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    box-shadow: 0 5px 20px rgba(15, 23, 42, 0.05);
    transition: opacity .6s ease, transform 0.6s ease, border-color 0.3s ease, background-color 0.3s ease;
}

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

.card:hover {
    transform: translateY(-8px);
    border-color: var(--heading-color);
    box-shadow: var(--heading-color);
}

.card-icon {
    color: var(--heading-color);
    margin-bottom: 15px;
}

/* --- Quote Modal --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--modal-overlay);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    padding: 20px;
    box-sizing: border-box;
}

.modal-overlay.active {
    display: flex;
}

.modal-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    width: 100%;
    max-width: 550px;
    border-radius: 12px;
    padding: 35px;
    position: relative;
    text-align: left;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.close-btn {
    position: absolute;
    top: 15px;
    right: 20px;
    background: none;
    border: none;
    font-size: 28px;
    color: var(--muted-text);
    cursor: pointer;
}

.modal-card h3 {
    margin-top: 0;
    color: var(--heading-color);
    font-size: 1.8rem;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full {
    grid-column: span 2;
}

.form-group label {
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 6px;
    color: var(--text-color);
}

.form-group input, 
.form-group select, 
.form-group textarea {
    padding: 12px;
    border-radius: 6px;
    border: 1px solid var(--input-border);
    background: var(--input-bg);
    color: var(--text-color);
    font-size: 15px;
    outline: none;
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
    border-color: var(--heading-color);
}

/* --- Floating WhatsApp Widget --- */
.whatsapp-float {
    position: fixed;
    bottom: 25px;
    right: 25px;
    width: 60px;
    height: 60px;
    background-color: #25d366;
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
    z-index: 1500;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

.whatsapp-icon {
    width: 34px;
    height: 34px;
}

footer {
    padding: 30px;
    background: var(--footer-bg);
    border-top: 1px solid var(--card-border);
    transition: background-color 0.3s ease;
}

@media (max-width: 600px) {
    .nav-links {
        display: none; /* Mobile header optimization */
    }
    .form-grid {
        grid-template-columns: 1fr;
    }
    .form-group.full {
        grid-column: span 1;
    }
}

@media (max-width:768px){

.hero{

min-height:75vh;

padding:120px 20px 60px;

}

.hero-content{

text-align:left;

}

.cta-group{

justify-content:center;

}

.logo{

margin:auto auto 25px;

}

.hero h1{

font-size:2.6rem;

}

.tagline{

margin:auto auto 35px;

}

}

.hero-content>*{
    opacity:0;
    transform:translateY(25px);
    animation:fadeUp .8s forwards;
}

.hero-content img{
    animation-delay:.1s;
}

.hero-content h1{
    animation-delay:.25s;
}

.hero-content .tagline{
    animation-delay:.45s;
}

.hero-content .hero-description{
    animation-delay:.6s;
}

.hero-content .cta-group{
    animation-delay:.8s;
}

@keyframes fadeUp{

from{

opacity:0;
transform:translateY(30px);

}

to{

opacity:1;
transform:translateY(0);

}

}

footer{

text-align:center;

line-height:1.8;

}

footer a{

color:var(--heading-color);

text-decoration:none;

}

footer a:hover{

text-decoration:underline;

}