/* --- Variables --- */
:root {
    --color-steel: #4682b4;     /* Steel Blue */
    --color-steel-dark: #2c5270;
    --color-red: #d32f2f;       /* Signal Red */
    --color-grey: #cfd8dc;      /* Light Steel Grey */
    --color-dark: #263238;      /* Charcoal */
    --color-white: #ffffff;
    --color-text: #37474f;
    
    --font-head: 'Chakra Petch', sans-serif; /* Tech / Industrial Look */
    --font-body: 'Roboto', sans-serif;
    
    --radius: 0px; /* Sharp technical edges */
    --shadow: 0 4px 10px rgba(0,0,0,0.2);
}

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

body {
    font-family: var(--font-body);
    background-color: var(--color-grey);
    color: var(--color-text);
    line-height: 1.6;
}

a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }
img { max-width: 100%; display: block; filter: contrast(1.1); }

.container { width: 92%; max-width: 1300px; margin: 0 auto; }

/* --- Net Bar --- */
.net-bar { background-color: var(--color-dark); color: var(--color-steel); font-size: 0.8rem; padding: 5px 0; font-family: var(--font-head); letter-spacing: 1px; }
.bar-flex { display: flex; justify-content: space-between; flex-wrap: wrap; }
.status { margin-right: 20px; }
.status strong { color: #00e676; }
.login-link a { color: var(--color-white); font-weight: bold; }

/* --- Header --- */
.rail-header { background-color: var(--color-white); padding: 15px 0; border-bottom: 4px solid var(--color-steel); position: sticky; top: 0; z-index: 1000; box-shadow: var(--shadow); }
.header-flex { display: flex; justify-content: space-between; align-items: center; }

.logo { font-family: var(--font-head); font-size: 2rem; font-weight: 700; color: var(--color-dark); letter-spacing: 1px; }
.red-text { color: var(--color-red); }
.icon-rail { font-size: 1.5rem; letter-spacing: -2px; color: var(--color-steel); margin-left: 5px; transform: rotate(90deg); display: inline-block; font-weight: 900; }

.tech-nav ul { display: flex; gap: 30px; align-items: center; }
.tech-nav a { font-family: var(--font-head); font-weight: 600; color: var(--color-dark); font-size: 1rem; text-transform: uppercase; }
.tech-nav a:hover, .tech-nav a.active { color: var(--color-red); border-bottom: 2px solid var(--color-red); }

.btn-steel { background-color: var(--color-steel); color: var(--color-white) !important; padding: 10px 25px; font-weight: bold; font-family: var(--font-head); letter-spacing: 1px; }
.btn-steel:hover { background-color: var(--color-steel-dark); }

.mobile-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; }
.mobile-toggle span { width: 30px; height: 3px; background-color: var(--color-dark); }

/* --- Mobile Menu --- */
.mobile-menu {
    position: fixed; top: 0; right: -100%; width: 250px; height: 100%;
    background-color: var(--color-dark); z-index: 2000;
    display: flex; flex-direction: column; padding: 40px; gap: 20px;
    box-shadow: -5px 0 20px rgba(0,0,0,0.3); transition: 0.3s ease; border-left: 5px solid var(--color-steel);
}
.mobile-menu.active { right: 0; }
.close-menu { align-self: flex-end; font-size: 1.5rem; color: var(--color-white); background: none; border: none; cursor: pointer; }
.mobile-menu a { font-family: var(--font-head); font-size: 1.2rem; color: var(--color-white); border-bottom: 1px solid #455a64; padding-bottom: 10px; }

/* --- Hero --- */
.hero-rail {
    position: relative; height: 550px;
    background-size: cover; background-position: center;
    display: flex; align-items: center;
    border-bottom: 10px solid var(--color-dark);
}
.hero-grid-overlay {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1;
    background: 
        linear-gradient(rgba(0,0,0,0.6) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,0,0,0.6) 1px, transparent 1px),
        linear-gradient(to right, rgba(12, 20, 30, 0.9), rgba(12, 20, 30, 0.4));
    background-size: 50px 50px, 50px 50px, 100% 100%;
}

.hero-content { position: relative; z-index: 2; width: 100%; max-width: 1200px; margin: 0 auto; padding: 20px; color: var(--color-white); }
.hero-content h1 { font-family: var(--font-head); font-size: 3.5rem; line-height: 1.1; margin-bottom: 20px; text-transform: uppercase; border-left: 5px solid var(--color-red); padding-left: 20px; }
.hero-content p { font-size: 1.2rem; max-width: 600px; margin-bottom: 40px; color: #cfd8dc; }

.tracking-module { background-color: rgba(38, 50, 56, 0.9); padding: 0; width: 100%; max-width: 500px; border: 1px solid var(--color-steel); box-shadow: var(--shadow); }
.track-head { background-color: var(--color-steel); color: var(--color-white); padding: 10px 20px; font-family: var(--font-head); font-weight: bold; letter-spacing: 1px; }
.track-input { padding: 20px; display: flex; gap: 10px; }
.track-input input { flex: 1; padding: 12px; background: #fff; border: 1px solid #546e7a; color: #000; font-family: var(--font-head); }
.track-input button { background-color: var(--color-red); color: #fff; border: none; padding: 0 25px; font-weight: bold; cursor: pointer; font-family: var(--font-head); }
.track-input button:hover { background-color: #b71c1c; }
.track-result { padding: 0 20px 20px; font-family: var(--font-head); color: #00e676; font-size: 0.9rem; }

/* --- Services Grid --- */
.section-padding { padding: 80px 0; }
.section-title { margin-bottom: 50px; }
.section-title h2 { font-family: var(--font-head); font-size: 2.5rem; color: var(--color-dark); margin-bottom: 10px; text-transform: uppercase; }
.line-tech { width: 100px; height: 5px; background: repeating-linear-gradient(45deg, var(--color-steel), var(--color-steel) 10px, var(--color-dark) 10px, var(--color-dark) 20px); }

.service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
.service-card { background-color: var(--color-white); padding: 30px; border: 1px solid #b0bec5; transition: 0.3s; position: relative; overflow: hidden; }
.service-card:hover { border-color: var(--color-red); box-shadow: var(--shadow); }
.service-card::after { content: ''; position: absolute; top: 0; left: 0; width: 5px; height: 100%; background-color: var(--color-steel); }
.service-card .icon { font-size: 3rem; margin-bottom: 15px; }
.service-card h3 { font-family: var(--font-head); font-size: 1.4rem; margin-bottom: 10px; color: var(--color-dark); }
.service-card p { color: #546e7a; font-size: 0.95rem; margin-bottom: 20px; }
.service-card a { font-family: var(--font-head); color: var(--color-steel-dark); font-weight: bold; font-size: 0.9rem; }

/* --- KPI --- */
.kpi-section { background-color: var(--color-dark); color: var(--color-white); padding: 50px 0; margin-top: 50px; border-top: 5px solid var(--color-red); }
.kpi-flex { display: flex; justify-content: space-around; text-align: center; }
.kpi-box .val { display: block; font-family: var(--font-head); font-size: 3.5rem; font-weight: 700; color: var(--color-steel); line-height: 1; }
.kpi-box .lbl { font-size: 1rem; color: #b0bec5; letter-spacing: 1px; }

/* --- About (Map) --- */
.page-head { margin-bottom: 50px; }
.page-head h1 { font-family: var(--font-head); font-size: 3rem; color: var(--color-dark); text-transform: uppercase; }

.route-details { display: grid; grid-template-columns: 1.5fr 1fr; gap: 50px; align-items: center; }
.map-visual { position: relative; border: 5px solid var(--color-steel); background: #000; }
.map-visual img { width: 100%; opacity: 0.8; }
.pulse-point { position: absolute; width: 15px; height: 15px; background-color: var(--color-red); border-radius: 50%; box-shadow: 0 0 0 0 rgba(211, 47, 47, 0.7); animation: pulse 2s infinite; }
.p1 { top: 40%; left: 80%; } /* China approx */
.p2 { top: 50%; left: 50%; } /* Caspian approx */
.p3 { top: 55%; left: 20%; } /* Turkey approx */
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(211, 47, 47, 0.7); } 70% { box-shadow: 0 0 0 20px rgba(211, 47, 47, 0); } 100% { box-shadow: 0 0 0 0 rgba(211, 47, 47, 0); } }

.tech-list { list-style: none; margin-top: 20px; }
.tech-list li { margin-bottom: 15px; padding-left: 15px; border-left: 3px solid var(--color-red); }

/* --- Testimonials --- */
.ref-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.ref-box { background-color: var(--color-white); padding: 30px; border: 1px solid #cfd8dc; }
.ref-box.highlight { background-color: var(--color-dark); color: var(--color-white); border: none; }
.ref-box.highlight p { color: #eceff1; }
.industry { font-size: 0.75rem; background-color: var(--color-steel); color: #fff; display: inline-block; padding: 2px 8px; margin-bottom: 10px; font-family: var(--font-head); letter-spacing: 1px; }
.ref-box h3 { font-family: var(--font-head); font-size: 1.3rem; margin-bottom: 15px; }
.manager { margin-top: 20px; border-top: 1px solid #eee; padding-top: 10px; font-size: 0.9rem; }

/* --- Form --- */
.quote-container { background-color: var(--color-white); padding: 60px; max-width: 900px; margin: 0 auto; border: 1px solid #b0bec5; box-shadow: var(--shadow); }
.quote-header { text-align: center; margin-bottom: 40px; }
.quote-header h2 { font-family: var(--font-head); font-size: 2.5rem; color: var(--color-dark); }

.tech-form .form-row { display: flex; gap: 20px; margin-bottom: 20px; }
.tech-form .col { flex: 1; }
.tech-form .full { width: 100%; }
.tech-form label { display: block; font-family: var(--font-head); color: var(--color-dark); margin-bottom: 5px; font-weight: bold; }
.tech-form input, .tech-form select, .tech-form textarea { width: 100%; padding: 12px; border: 1px solid #90a4ae; background-color: #eceff1; font-family: var(--font-head); font-size: 1rem; color: var(--color-dark); }
.tech-form input:focus { border-color: var(--color-red); outline: none; background-color: #fff; }
.btn-submit { width: 100%; background-color: var(--color-dark); color: var(--color-white); padding: 15px; border: none; font-family: var(--font-head); font-weight: bold; font-size: 1.2rem; cursor: pointer; transition: 0.3s; margin-top: 10px; }
.btn-submit:hover { background-color: var(--color-red); }

/* --- Legal --- */
.law-doc { max-width: 800px; margin: 0 auto; background-color: var(--color-white); padding: 60px; border: 1px solid #cfd8dc; }
.law-doc h1 { font-family: var(--font-head); color: var(--color-dark); }
.law-doc h3 { font-family: var(--font-head); color: var(--color-steel-dark); margin-top: 30px; margin-bottom: 10px; }

/* --- Footer --- */
.rail-footer { background-color: #102027; color: #cfd8dc; padding: 60px 0; margin-top: auto; text-align: center; }
.f-col h4 { font-family: var(--font-head); font-size: 1.8rem; margin-bottom: 5px; color: var(--color-white); }
.f-nav a { color: var(--color-steel); margin: 0 15px; font-weight: bold; }
.copyright { margin-top: 30px; font-size: 0.8rem; opacity: 0.5; }

@media (max-width: 992px) {
    .tech-nav { display: none; }
    .mobile-toggle { display: flex; }
    .hero-content h1 { font-size: 2.5rem; }
    .route-details { grid-template-columns: 1fr; }
    .ref-grid, .kpi-flex { grid-template-columns: 1fr; flex-direction: column; gap: 30px; }
    .tech-form .form-row { flex-direction: column; gap: 15px; }
}