/*
 * Professional CSS for coRAN LABS
 * Industry-grade design - No gradients, clean professional look
 */

/* ===================================
   CSS Variables (Professional Colors)
   =================================== */
:root {
    /* Primary Colors */
    --primary-blue: #003366;
    --brand-cyan: #1AA4BE;
    --accent-teal: #17A2B8;

    /* Neutral Colors */
    --white: #FFFFFF;
    --light-gray: #F8F9FA;
    --medium-gray: #E9ECEF;
    --border-gray: #DEE2E6;
    --text-gray: #6C757D;
    --dark-gray: #2C3E50;

    /* Background Colors */
    --bg-white: #FFFFFF;
    --bg-light: #F8F9FA;
    --bg-section: #FAFBFC;

    /* Text Colors */
    --text-primary: #212529;
    --text-secondary: #6C757D;
    --text-muted: #868E96;

    /* Status Colors */
    --success: #28A745;
    --info: #17A2B8;
    --warning: #FFC107;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition: all 0.3s ease;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
}

/* ===================================
   Typography
   =================================== */
body {
    font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

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

a:hover {
    color: var(--primary-blue);
}

/* ===================================
   Navigation Bar - Professional
   =================================== */
.navbar-professional {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-gray);
    padding: 1rem 0;
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
}

.navbar-professional.scrolled {
    box-shadow: var(--shadow-md);
    padding: 0.75rem 0;
}

.navbar-professional .navbar-brand img {
    height: 50px;
    transition: var(--transition);
}

.navbar-professional.scrolled .navbar-brand img {
    height: 40px;
}

.navbar-professional .nav-link {
    color: var(--text-primary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    margin: 0 0.25rem;
    border-radius: 4px;
    transition: var(--transition);
}

.navbar-professional .nav-link:hover {
    color: var(--brand-cyan);
    background-color: var(--light-gray);
}

.navbar-professional .nav-link.active {
    color: var(--brand-cyan);
    background-color: var(--light-gray);
}

/* Products Dropdown */
.products-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    border: 1px solid var(--border-gray);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    padding: 2rem;
    min-width: 800px;
    display: none;
    z-index: 1001;
}

.nav-item.dropdown:hover .products-dropdown {
    display: block;
}

.dropdown-category {
    margin-bottom: 1.5rem;
}

.dropdown-category h6 {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    letter-spacing: 0.5px;
}

.dropdown-category a {
    display: block;
    padding: 0.5rem 0.75rem;
    color: var(--text-primary);
    border-radius: 4px;
    transition: var(--transition);
    font-size: 0.9375rem;
}

.dropdown-category a:hover {
    background-color: var(--light-gray);
    color: var(--brand-cyan);
    padding-left: 1rem;
}

/* ===================================
   Hero Section - Clean Professional
   =================================== */
.hero-professional {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 8rem 0 5rem;
    position: relative;
    overflow: hidden;
}

.hero-professional::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 51, 102, 0.95) 0%, rgba(26, 164, 190, 0.85) 100%);
    z-index: 1;
}

.hero-professional .container {
    position: relative;
    z-index: 2;
}

.hero-professional h1 {
    color: var(--white);
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.hero-professional .lead {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

/* ===================================
   Buttons - Professional
   =================================== */
.btn-professional {
    padding: 0.75rem 2rem;
    font-weight: 600;
    border-radius: 6px;
    transition: var(--transition);
    border: 2px solid transparent;
    font-size: 1rem;
    display: inline-block;
    text-align: center;
}

.btn-primary-professional {
    background-color: var(--brand-cyan);
    color: var(--white);
    border-color: var(--brand-cyan);
}

.btn-primary-professional:hover {
    background-color: #178EA2;
    border-color: #178EA2;
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline-professional {
    background-color: transparent;
    color: var(--white);
    border-color: var(--white);
}

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

.btn-secondary-professional {
    background-color: var(--white);
    color: var(--primary-blue);
    border-color: var(--white);
}

.btn-secondary-professional:hover {
    background-color: var(--light-gray);
    border-color: var(--light-gray);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===================================
   Section Styling
   =================================== */
.section-professional {
    padding: 4rem 0;
}

.section-bg-light {
    background-color: var(--bg-light);
}

.section-bg-white {
    background-color: var(--bg-white);
}

.section-title-professional {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-align: center;
}

.section-subtitle-professional {
    font-size: 1.125rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ===================================
   Cards - Professional
   =================================== */
.card-professional {
    background: var(--white);
    border: 1px solid var(--border-gray);
    border-radius: 8px;
    padding: 2rem;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.card-professional:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--brand-cyan);
}

.card-professional .card-icon {
    font-size: 3rem;
    color: var(--brand-cyan);
    margin-bottom: 1.5rem;
}

.card-professional h3,
.card-professional h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.card-professional p {
    color: var(--text-secondary);
    flex-grow: 1;
}

.card-professional .card-link {
    color: var(--brand-cyan);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    margin-top: 1rem;
}

.card-professional .card-link:hover {
    color: var(--primary-blue);
}

.card-professional .card-link i {
    margin-left: 0.5rem;
    transition: var(--transition);
}

.card-professional:hover .card-link i {
    transform: translateX(4px);
}

/* ===================================
   Product Category Cards
   =================================== */
.category-card {
    background: var(--white);
    border: 2px solid var(--border-gray);
    border-radius: 12px;
    padding: 2.5rem;
    margin-bottom: 2rem;
}

.category-header {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-gray);
}

.category-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--brand-cyan);
    margin-right: 1rem;
    min-width: 3rem;
}

.category-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.category-description {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 2rem;
}

.product-item {
    background: var(--bg-light);
    border: 1px solid var(--border-gray);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.product-item:hover {
    border-color: var(--brand-cyan);
    box-shadow: var(--shadow-md);
    transform: translateX(8px);
}

.product-item h4 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.product-item p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.9375rem;
}

/* ===================================
   Specification Tables
   =================================== */
.spec-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: var(--white);
    border: 1px solid var(--border-gray);
    border-radius: 8px;
    overflow: hidden;
}

.spec-table thead {
    background-color: var(--primary-blue);
    color: var(--white);
}

.spec-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.5px;
}

.spec-table td {
    padding: 1rem;
    border-top: 1px solid var(--border-gray);
}

.spec-table tbody tr:hover {
    background-color: var(--bg-light);
}

/* ===================================
   Badges
   =================================== */
.badge-professional {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary {
    background-color: var(--brand-cyan);
    color: var(--white);
}

.badge-secondary {
    background-color: var(--medium-gray);
    color: var(--text-primary);
}

.badge-info {
    background-color: var(--info);
    color: var(--white);
}

/* ===================================
   Footer - Professional
   =================================== */
.footer-professional {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-professional h5 {
    color: var(--white);
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    letter-spacing: 0.5px;
}

.footer-professional a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.footer-professional a:hover {
    color: var(--white);
    padding-left: 0.5rem;
}

.footer-professional .footer-link {
    display: block;
    padding: 0.375rem 0;
}

.footer-bottom {
    background-color: #002244;
    color: rgba(255, 255, 255, 0.7);
    padding: 1.5rem 0;
    text-align: center;
    margin-top: 2rem;
    font-size: 0.875rem;
}

/* Social Links */
.social-links-professional {
    display: flex;
    gap: 1rem;
}

.social-links-professional a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    font-size: 1.25rem;
    transition: var(--transition);
}

.social-links-professional a:hover {
    background-color: var(--brand-cyan);
    transform: translateY(-3px);
    padding-left: 0;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1199px) {
    .products-dropdown {
        min-width: 600px;
    }
}

@media (max-width: 991px) {
    .hero-professional h1 {
        font-size: 2.5rem;
    }

    .section-title-professional {
        font-size: 2rem;
    }

    .products-dropdown {
        position: static;
        min-width: 100%;
        padding: 1rem;
    }
}

@media (max-width: 767px) {
    .hero-professional {
        padding: 6rem 0 3rem;
    }

    .hero-professional h1 {
        font-size: 2rem;
    }

    .hero-professional .lead {
        font-size: 1.125rem;
    }

    .section-professional {
        padding: 3rem 0;
    }

    .category-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .category-number {
        margin-bottom: 0.5rem;
    }
}

/* ===================================
   Utilities
   =================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

.d-flex { display: flex; }
.align-items-center { align-items: center; }
.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }

/* Preloader - Professional */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loader-content {
    text-align: center;
}

.loader-circle {
    width: 60px;
    height: 60px;
    border: 4px solid var(--light-gray);
    border-top-color: var(--brand-cyan);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

.loader-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===================================
   Hero Typing Animation
   =================================== */
.typing-cursor {
    display: inline-block;
    color: var(--brand-cyan);
    animation: blink 0.7s infinite;
    margin-left: 2px;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}