/* TAIT Software - PREMIUM TWILIGHT SYSTEM */
:root {
    --bg-main: #0F172A;
    /* Deep Navy Slate */
    --bg-card: #1E293B;
    --primary: #38BDF8;
    /* Sky Blue */
    --secondary: #818CF8;
    /* Soft Indigo */
    --accent: #F472B6;
    /* Vibrant Rose for highlights */
    --text-main: #F1F5F9;
    --text-muted: #94A3B8;
    --border: rgba(56, 189, 248, 0.1);

    --grad-main: linear-gradient(135deg, #38BDF8 0%, #818CF8 100%);
    --grad-surface: linear-gradient(180deg, rgba(30, 41, 59, 0.5) 0%, rgba(15, 23, 42, 0.8) 100%);

    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    --transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.7;
    /* Subtle background texture */
    background-image:
        radial-gradient(at 0% 0%, rgba(56, 189, 248, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(129, 140, 248, 0.05) 0px, transparent 50%);
}

.container {
    width: 88%;
    max-width: 1400px;
    margin: 0 auto;
}

section {
    padding: 200px 0;
}

h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    font-weight: 800;
    letter-spacing: -2px;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 35px 0;
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(20px);
    padding: 15px 0;
    border-bottom: 1px solid var(--border);
}

@media (max-width: 992px) {
    .navbar {
        padding: 20px 0;
        background: rgba(15, 23, 42, 0.85);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--border);
    }

    .logo-text {
        font-size: 1.8rem;
    }
}

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

/* Logo */
.logo {
    text-decoration: none;
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-size: 2.2rem;
    font-weight: 900;
    color: white;
    letter-spacing: -1px;
}

.logo-line {
    width: 100%;
    height: 4px;
    background: var(--grad-main);
    margin: 2px 0;
    border-radius: 2px;
}

.logo-sub {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 5px;
    color: var(--primary);
    font-weight: 700;
}

/* Navigation & Language Buttons */
.nav-links {
    display: flex;
    align-items: center;
    gap: 40px;
}

.lang-selector {
    display: flex;
    gap: 8px;
    background: rgba(15, 23, 42, 0.4);
    padding: 4px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 800;
    cursor: pointer;
    transition: var(--transition);
}

.lang-btn:hover {
    color: white;
}

.lang-btn.active {
    background: var(--grad-main);
    color: white;
    box-shadow: 0 4px 15px rgba(56, 189, 248, 0.2);
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: var(--transition);
}

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

/* Menu Toggle (Mobile) */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
    padding: 10px;
}

.menu-toggle span {
    display: block;
    width: 30px;
    height: 2px;
    background: white;
    border-radius: 2px;
    transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 20px 45px;
    border-radius: 100px;
    /* Pillow shape for premium feel */
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.btn-primary {
    background: var(--grad-main);
    color: white;
    box-shadow: 0 15px 35px rgba(56, 189, 248, 0.25);
}

@media (hover: hover) {
    .btn-primary:hover {
        transform: translateY(-5px) scale(1.02);
        box-shadow: 0 20px 50px rgba(56, 189, 248, 0.4);
    }
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

@media (hover: hover) {
    .btn-outline:hover {
        background: var(--primary);
        color: white;
    }
}

.btn-full {
    width: 100%;
}

.btn i {
    margin-right: 15px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    padding-top: 140px;
    /* Stronger padding to avoid navbar overlap */
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, transparent 70%);
    top: -100px;
    right: -100px;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 5;
    max-width: 900px;
}

.hero h1 {
    font-size: clamp(4rem, 10vw, 8rem);
    line-height: 0.9;
    margin-bottom: 30px;
    color: white;
}

.hero h1 span {
    display: block;
    background: var(--grad-main);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.5rem;
    color: var(--text-muted);
    margin-bottom: 60px;
    max-width: 750px;
}

/* Stats Section */
.stats-section {
    background: var(--bg-card);
    padding: 120px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.stat-num {
    font-size: 6rem;
    font-weight: 900;
    color: white;
    display: block;
    line-height: 1;
    margin-bottom: 15px;
    background: var(--grad-main);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 4px;
    color: var(--text-muted);
    font-weight: 700;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    text-align: center;
    gap: 50px;
}

/* Formula Steps */
.formula-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.formula-step {
    background: var(--bg-card);
    padding: 60px 40px;
    border-radius: 30px;
    border: 1px solid var(--border);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    gap: 30px;
}

@media (hover: hover) {
    .formula-step:hover {
        transform: translateY(-10px);
        border-color: var(--primary);
        box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
    }
}

.step-icon {
    width: 80px;
    height: 80px;
    background: var(--grad-main);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.step-content h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    background: var(--grad-main);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

/* Service Mega Card */
.service-mega-card {
    display: flex;
    background: var(--bg-card);
    border-radius: 50px;
    border: 1px solid var(--border);
    overflow: hidden;
    margin-top: 60px;
    position: relative;
}

.service-side {
    flex: 1;
    padding: 80px;
    position: relative;
}

.dev-side {
    background: var(--grad-surface);
}

.maint-side {
    background: rgba(15, 23, 42, 0.4);
}

.service-badge {
    display: inline-block;
    padding: 10px 25px;
    background: rgba(56, 189, 248, 0.1);
    color: var(--primary);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 30px;
}

.service-badge.accent {
    background: rgba(244, 114, 182, 0.1);
    color: var(--accent);
}

.service-side h3 {
    font-size: 2.8rem;
    line-height: 1.1;
    margin-bottom: 25px;
}

.service-desc {
    color: var(--text-muted);
    font-size: 1.2rem;
    margin-bottom: 40px;
}

.benefit-list {
    list-style: none;
}

.benefit-list li {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--text-main);
}

.benefit-list li i {
    color: var(--primary);
    font-size: 1.2rem;
}

.maint-side li i {
    color: var(--accent);
}

.service-connector {
    width: 1px;
    background: var(--border);
    position: relative;
}

/* Section Header */
.section-tag {
    color: var(--accent);
    text-transform: uppercase;
    font-weight: 800;
    letter-spacing: 6px;
    font-size: 0.8rem;
    margin-bottom: 25px;
    display: block;
}

.section-title {
    font-size: 4rem;
    margin-bottom: 100px;
    color: white;
}

.central {
    text-align: center;
}

.central-btn {
    text-align: center;
    margin-top: 60px;
}

/* Advantages Grid */
.values-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.advantage-card {
    background: var(--grad-surface);
    padding: 80px 50px;
    border-radius: 40px;
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--grad-main);
    opacity: 0;
    transition: var(--transition);
}

@media (hover: hover) {
    .advantage-card:hover {
        transform: translateY(-20px);
        border-color: var(--primary);
        box-shadow: 0 40px 100px rgba(0, 0, 0, 0.4);
    }

    .advantage-card:hover::before {
        opacity: 1;
    }
}

.advantage-card i {
    position: absolute;
    top: 40px;
    font-size: 2.5rem;
    background: var(--grad-main);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
}

.advantage-card h3 {
    margin-top: 40px;
    font-size: 2.2rem;
    margin-bottom: 20px;
}

.services-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 60px;
}

.service-item h3 {
    color: var(--primary);
    font-size: 2.8rem;
    margin-bottom: 25px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 100px;
    align-items: center;
}

/* Comparison */
.comparison-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.comparison-column {
    padding: 80px;
    border-radius: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border);
}

.comparison-column.others {
    opacity: 0.6;
    border-color: rgba(255, 255, 255, 0.05);
}

.comparison-column.tait {
    border: 2px solid var(--primary);
    box-shadow: 0 0 50px rgba(56, 189, 248, 0.1);
}

.comparison-column h4 {
    font-size: 1.8rem;
    margin-bottom: 40px;
    text-align: center;
}

.comparison-column ul li {
    list-style: none;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 1.2rem;
}

.comparison-column.tait i {
    color: var(--primary);
}

.comparison-column.others i {
    color: #475569;
}

/* Contact Form */
.contact-form {
    background: var(--bg-card);
    padding: 80px;
    border-radius: 50px;
    border: 1px solid var(--border);
}

.form-group {
    margin-bottom: 40px;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--primary);
    margin-bottom: 15px;
    font-weight: 800;
}

.form-group input,
.form-group textarea {
    width: 100%;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border);
    border-radius: 15px;
    padding: 20px;
    color: white;
    font-family: inherit;
    font-size: 1.1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(15, 23, 42, 0.8);
    box-shadow: 0 0 30px rgba(56, 189, 248, 0.1);
}

/* Reveal */
.reveal {
    opacity: 0;
    transform: translateY(60px);
    transition: var(--transition);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Footer */
footer {
    padding: 120px 0;
    background: #0B1120;
    border-top: 1px solid var(--border);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 50px;
}

.footer-links {
    display: flex;
    gap: 80px;
    flex-wrap: wrap;
}

.footer-col h4 {
    color: var(--primary);
    font-size: 0.8rem;
    letter-spacing: 3px;
    margin-bottom: 25px;
    text-transform: uppercase;
}

.footer-link-group {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.footer-link-group a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.footer-link-group a:hover {
    color: var(--primary);
}

.footer-bottom {
    margin-top: 100px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* Responsive Refinements */
@media (max-width: 1200px) {
    .container {
        width: 90%;
    }

    .section-title {
        font-size: 3.5rem;
    }

    .hero h1 {
        font-size: 5rem;
    }
}

@media (max-width: 992px) {
    section {
        padding: 120px 0;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--bg-main);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 30px;
        transition: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1000;
        padding: 40px;
    }

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

    .nav-links a {
        font-size: 1.5rem;
    }

    .lang-selector {
        margin-top: 20px;
    }

    .hero {
        padding-top: 100px;
        text-align: center;
    }

    .hero-content {
        margin: 0 auto;
    }

    .hero p {
        margin: 0 auto 40px;
    }

    .hero-btns {
        display: flex;
        flex-direction: column;
        gap: 20px;
    }

    .btn {
        width: 100%;
    }

    .service-mega-card {
        flex-direction: column;
        border-radius: 30px;
    }

    .service-side {
        padding: 50px 30px;
    }

    .service-connector {
        width: 100%;
        height: 1px;
    }

    .comparison-container,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 2.8rem;
        margin-bottom: 60px;
    }

    .hero h1 {
        font-size: 3.5rem;
    }

    .stat-num {
        font-size: 4rem;
    }

    .hero-glow {
        width: 300px;
        height: 300px;
        top: -50px;
        right: -50px;
    }

    .contact-form {
        padding: 40px 20px;
    }

    .advantage-card i {
        position: relative;
        top: 0;
        margin-bottom: 30px;
    }

    .advantage-card h3 {
        margin-top: 0;
    }

    .service-item h3 {
        font-size: 2.2rem;
    }
}

@media (max-width: 768px) {
    section {
        padding: 100px 0;
    }

    .section-title {
        font-size: 2.2rem;
    }

    .hero h1 {
        font-size: 2.8rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .formula-step {
        padding: 40px 25px;
    }

    .advantage-card {
        padding: 60px 30px;
    }

    .stat-num {
        font-size: 3.5rem;
    }

    .service-side h3 {
        font-size: 2rem;
    }

    .benefit-list li {
        font-size: 1rem;
    }

    footer .footer-top {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
        width: 100%;
        gap: 40px;
    }

    .footer-col {
        text-align: center;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .footer-link-group {
        align-items: center;
    }

    footer .footer-bottom {
        flex-direction: column;
        align-items: center;
        gap: 20px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        width: 92%;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .stat-num {
        font-size: 3rem;
    }

    .service-item h3 {
        font-size: 1.8rem !important;
    }
}