/* 
    Bluro Technology - Core Design System
    Focus: Professional, Engineering-focused, Innovative
*/

:root {
    --primary-deep: #0a192f;
    --primary-light: #172a45;
    --accent-blue: #64ffda;
    --accent-gold: #fcc419;
    --text-white: #e6f1ff;
    --text-muted: #8892b0;
    --white: #ffffff;
    --glass: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --hero-overlay: linear-gradient(rgba(10, 25, 47, 0.85), rgba(10, 25, 47, 0.75));
    --bg-primary: var(--primary-deep);
    --bg-secondary: var(--primary-light);
    --shadow-main: 0 10px 30px -10px rgba(2, 12, 27, 0.7);
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    --transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
}

:root.light-theme {
    --primary-deep: #f8fafc;
    --primary-light: #ffffff;
    --accent-blue: #0ea5e9;
    --accent-gold: #f59e0b;
    --text-white: #0f172a;
    --text-muted: #475569;
    --white: #000000;
    --glass: rgba(15, 23, 42, 0.05);
    --glass-border: rgba(15, 23, 42, 0.1);
    --hero-overlay: linear-gradient(rgba(248, 250, 252, 0.85), rgba(248, 250, 252, 0.75));
    --bg-primary: var(--primary-deep);
    --bg-secondary: #f1f5f9;
    --shadow-main: 0 10px 30px -10px rgba(0, 0, 0, 0.1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--primary-deep);
    color: var(--text-white);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
    font-weight: 700;
    line-height: 1.1;
    color: var(--white);
}

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Nav Styles */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 0.5rem 0;
    background: transparent;
    transition: var(--transition);
}

header.scrolled {
    background: var(--bg-primary);
    backdrop-filter: blur(10px);
    padding: 0.5rem 0;
    box-shadow: var(--shadow-main);
    opacity: 0.95;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--accent-gold);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo img {
    height: 45px;
    width: auto;
    max-width: 200px;
    display: block;
}

.logo span {
    color: var(--text-white);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-links {
    display: flex;
    gap: 2.1rem;
    align-items: center;
}

.nav-links li {
    position: relative;
    font-size: 0.95rem;
}

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

/* Dropdown Styles */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.dropdown-toggle::after {
    content: '▼';
    font-size: 0.7rem;
    transition: var(--transition);
}

.dropdown:hover .dropdown-toggle::after {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(252, 196, 25, 0.2);
    border-radius: 8px;
    min-width: 210px;
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1000;
    margin-top: 1.2rem;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    list-style: none;
}

.dropdown-menu a {
    display: block;
    padding: 0.8rem 1.5rem;
    color: var(--text-white);
    transition: var(--transition);
}

.dropdown-menu a:hover,
.dropdown-menu a.active {
    background: rgba(252, 196, 25, 0.1);
    color: var(--accent-gold);
}

.btn {
    padding: 0.8rem 1.8rem;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.btn-primary {
    background: var(--accent-gold);
    color: var(--primary-deep) !important;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(252, 196, 25, 0.3);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--accent-gold);
    color: var(--accent-gold);
}

.btn-outline:hover {
    background: rgba(252, 196, 25, 0.1);
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: none;
    color: var(--text-white);
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    border-radius: 50%;
}

.theme-toggle:hover {
    background: var(--glass);
    color: var(--accent-gold);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.theme-toggle .sun {
    display: none;
}

.light-theme .theme-toggle .sun {
    display: block;
}

.light-theme .theme-toggle .moon {
    display: none;
}

/* Footer */
footer {
    padding: 4rem 0 2rem;
    background: var(--bg-primary);
    border-top: 1px solid var(--glass-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--accent-gold);
    margin-bottom: 1.5rem;
}

.footer-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.footer-links h4 {
    margin-bottom: 1.5rem;
    color: var(--white);
}

.footer-links ul li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.copyright {
    text-align: center;
    padding-top: 1rem;
    /* border-top: 1px solid var(--glass); */
    color: var(--text-muted);
    font-size: 0.85rem;
}

.header-btns {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle .bar {
    width: 100%;
    height: 3px;
    background: var(--accent-gold);
    border-radius: 10px;
    transition: var(--transition);
}


/* Service Detail Styles (Migrated) */
.service-detail {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 5rem;
}

.service-detail:nth-child(even) {
    direction: rtl;
}

.service-detail:nth-child(even) .service-content {
    direction: ltr;
}

.service-img {
    width: 80%;
    height: 420px;
    aspect-ratio: 16 / 11;
    margin: 0 auto;
    border-radius: 12px;
    background-size: cover;
    background-position: center;
    transition: transform 0.5s ease;
    filter: drop-shadow(0px 0px 20px rgba(0, 0, 0, 0.3));
}

.service-detail:nth-child(even) .service-img {
    margin-right: auto;
    margin-left: 0;
}

.service-detail:nth-child(odd) .service-img {
    margin-left: auto;
    margin-right: 0;
}

.service-img:hover {
    transform: scale(1.02);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 1rem 0;
}

.tech-tag {
    background: rgba(100, 255, 218, 0.05);
    color: var(--accent-gold);
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.75rem;
    border: 1px solid rgba(252, 196, 25, 0.2);
    font-weight: 600;
}

.detail-block {
    margin-top: 1.5rem;
    padding-top: 1.2rem;
    border-top: 1px solid var(--glass);
}

.detail-block h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-gold);
    margin-bottom: 0.8rem;
}

.detail-block ul li {
    margin-bottom: 0.4rem;
    font-size: 0.9rem;
    color: var(--text-white);
    display: flex;
    align-items: center;
    gap: 10px;
}

.detail-block ul li::before {
    content: '→';
    color: var(--accent-gold);
    font-weight: bold;
}

.client-benefit {
    margin-top: 1.5rem;
    padding: 1rem;
    background: rgba(252, 196, 25, 0.03);
    border-left: 3px solid var(--accent-gold);
    border-radius: 4px;
}

.client-benefit h4 {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--accent-gold);
    margin-bottom: 0.4rem;
    letter-spacing: 0.5px;
}

.client-benefit p {
    font-size: 0.9rem;
    color: var(--text-white);
    margin: 0 !important;
}


/* --- Enterprise Level 1: Overview Cards --- */
.services-overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    margin-top: 4rem;
}

.overview-card {
    background: var(--primary-light);
    border: 1px solid var(--glass);
    padding: 2.5rem;
    border-radius: 12px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.overview-card:hover {
    transform: translateY(-10px);
    border-color: rgba(252, 196, 25, 0.4);
    box-shadow: 0 20px 40px -15px rgba(2, 12, 27, 0.7);
}

.overview-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--white);
}

.overview-card .card-value {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    min-height: 3rem;
    line-height: 1.5;
}

.overview-card-highlights {
    margin-bottom: 2rem;
    flex-grow: 1;
}

.overview-card-highlights li {
    font-size: 0.9rem;
    color: var(--text-white);
    margin-bottom: 0.6rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.overview-card-highlights li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--accent-gold);
    border-radius: 50%;
}

/* --- Enterprise Level 2: Service Detail Components --- */
.service-hero {
    padding: 12rem 0 6rem;
    background: linear-gradient(rgba(10, 25, 47, 0.9), rgba(10, 25, 47, 0.9)),
        url('../assets/images/service-bg-mesh.jpg') center/cover;
    text-align: center;
}

.service-summary {
    max-width: 800px;
    margin: 4rem auto;
    font-size: 1.15rem;
    color: var(--text-muted);
    text-align: center;
    line-height: 1.8;
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.capability-item {
    padding: 2.5rem;
    background: rgba(255, 255, 255, 0.02);
    border-left: 3px solid var(--accent-gold);
    border-radius: 4px;
    transition: var(--transition);
}

.capability-item:hover {
    background: rgba(255, 255, 255, 0.04);
}

.capability-item h4 {
    color: var(--white);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

/* Application Area Grid */
.app-area-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.app-area-item {
    background: var(--primary-light);
    padding: 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.9rem;
    border: 1px solid var(--glass);
    text-align: center;
    color: var(--text-white);
    transition: var(--transition);
}

.app-area-item:hover {
    border-color: var(--accent-gold);
    background: rgba(252, 196, 25, 0.05);
}

/* Engineering Process Stepper */
.process-container {
    max-width: 900px;
    margin: 4rem auto;
}

.process-step {
    display: flex;
    gap: 2.5rem;
    margin-bottom: 4rem;
    position: relative;
}

.process-step::after {
    content: '';
    position: absolute;
    left: 20px;
    top: 50px;
    bottom: -50px;
    width: 2px;
    background: var(--glass);
}

.process-step:last-child::after {
    display: none;
}

.step-num {
    width: 42px;
    height: 42px;
    background: var(--accent-gold);
    color: var(--primary-deep);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.1rem;
    flex-shrink: 0;
    z-index: 10;
    box-shadow: 0 0 20px rgba(252, 196, 25, 0.2);
}

.step-content h4 {
    color: var(--white);
    margin-bottom: 0.75rem;
    font-size: 1.3rem;
}

/* Tech Chips */
.tech-expertise-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2.5rem;
}

.tech-chip {
    background: rgba(100, 255, 218, 0.03);
    border: 1px solid rgba(100, 255, 218, 0.1);
    color: var(--accent-blue);
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
}

.tech-chip:hover {
    background: rgba(100, 255, 218, 0.1);
    border-color: var(--accent-blue);
}

.tech-stack-section {
    background: var(--primary-light);
    padding: 3.5rem;
    border-radius: 12px;
    border: 1px solid var(--glass);
}

.cta-box {
    text-align: center;
    background: var(--primary-light);
    padding: 5rem 2rem;
    border-radius: 16px;
    border: 1px solid var(--glass);
    margin: 4rem 0;
}

/* mobile responce code sectoin with size details */
@media (max-width: 992px) {

    .service-detail,
    .service-detail:nth-child(even) {
        grid-template-columns: 1fr;
        direction: ltr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {

    /* Enforce rigid fixed header on mobile for clarity & to prevent overlap */
    header {
        position: fixed !important;
        top: 0 !important;
        left: 0;
        width: 100% !important;
        background: var(--bg-primary) !important;
        box-shadow: var(--shadow-main) !important;
        z-index: 9999 !important;
    }

    nav {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
    }

    .nav-right {
        gap: 1rem;
    }

    .header-btns {
        display: flex;
        align-items: center;
        gap: 1rem;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-links {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: var(--primary-deep);
        padding: 6rem 2rem;
        transition: var(--transition);
        box-shadow: -10px 0 30px rgba(53, 80, 119, 0.7);
        z-index: 999;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links {
        display: flex;
        gap: 1rem;
        align-items: center;
    }

    .header-btns .btn-outline {
        display: inline-block;
        padding: 0.6rem 1rem;
        font-size: 0.8rem;
        border-width: 1px;
    }

    .menu-toggle.active .bar:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }

    .menu-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active .bar:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-split {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .service-detail,
    .service-detail:nth-child(even) {
        display: flex !important;
        flex-direction: column !important;
        gap: 2rem;
        text-align: center;
        align-items: center;
        direction: ltr !important;
    }

    .service-content {
        display: flex;
        flex-direction: column;
        align-items: center;
        /* Center align content items */
        text-align: center;
    }

    .overview-card-highlights {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding-left: 0;
    }

    .overview-card-highlights li {
        justify-content: center;
    }

    .service-img {
        width: 100%;
        height: 280px;
        order: -1;
        /* Ensure image is at the very top */
    }

    .btn {
        padding: 0.8rem 0.8rem;
        border-radius: 4px;
        font-weight: 600;
        cursor: pointer;
        border: none;
        transition: var(--transition);
    }

    .hero-btns {
        display: flex;
        gap: 2.5rem;
        font-size: 14px;
    }

    .btn-primary:hover {
        transform: translateY(-3px);
        box-shadow: 0 5px 15px rgba(252, 196, 25, 0.3);
    }

    .btn-outline {
        background: var(--primary-light);
        border: 1px solid var(--accent-gold);
        color: var(--text-white);
    }
}