/*
Theme Name: Corp Bilingual
Theme URI: https://www.intelligentsports.hk
Author: WorkBuddy
Description: Custom bilingual (zh_HK / en) enterprise theme. Deep-navy + cyan tech style, translation-ready, Polylang-compatible. Reuses the Intelligent Sports (ISCL) design language.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.4
Requires PHP: 8.1
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: corp
Tags: custom-logo, custom-menu, featured-images, translation-ready
*/

/* ========================================
   CSS Variables (design tokens)
   ======================================== */
:root {
    --corp-primary: #0a1628;
    --corp-secondary: #0f2744;
    --corp-accent: #00d4ff;
    --corp-accent-dark: #00a8cc;
    --corp-white: #ffffff;
    --corp-light-gray: #e8edf3;
    --corp-text-gray: #b0bec5;
    --corp-success: #4caf50;
    --corp-danger: #ef5350;
    --corp-transition: 0.3s ease;
    --corp-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    --corp-shadow-hover: 0 8px 30px rgba(0, 212, 255, 0.2);
    --corp-container: 1200px;
}

/* ========================================
   Reset & Base
   ======================================== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'PingFang TC', 'Microsoft YaHei', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--corp-white);
    background-color: var(--corp-primary);
    overflow-x: hidden;
}
a { color: var(--corp-accent); text-decoration: none; transition: var(--corp-transition); }
a:hover { color: var(--corp-white); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.2; margin-bottom: 1rem; color: var(--corp-white); }
h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
p { margin-bottom: 1rem; color: var(--corp-text-gray); }
.text-accent { color: var(--corp-accent); }
.text-center { text-align: center; }

.container { width: 100%; max-width: var(--corp-container); margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-dark { background-color: var(--corp-primary); }
.section-secondary { background-color: var(--corp-secondary); }
.grid { display: grid; gap: 30px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.page-banner .btn { margin-top: 18px; }

/* ========================================
   Header & Navigation
   ======================================== */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: linear-gradient(180deg, rgba(10,22,40,0.95) 0%, rgba(10,22,40,0.8) 100%);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,212,255,0.1);
    transition: var(--corp-transition);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 15px 0; }
.site-logo { display: flex; align-items: center; gap: 12px; }
.site-logo img { height: 45px; width: auto; }
.logo-text { font-size: 1.4rem; font-weight: 700; color: var(--corp-white); line-height: 1.2; }
.logo-tagline { font-size: 0.7rem; color: var(--corp-accent); text-transform: uppercase; letter-spacing: 1px; }
.main-nav { display: flex; align-items: center; }
.main-nav ul { display: flex; gap: 35px; }
.main-nav a { color: var(--corp-white); font-weight: 500; font-size: 0.95rem; padding: 8px 0; position: relative; }
.main-nav a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--corp-accent); transition: var(--corp-transition); }
.main-nav a:hover::after, .main-nav a.active::after, .main-nav a.current-menu-item > a::after { width: 100%; }
.main-nav a:hover, .main-nav a.active { color: var(--corp-accent); }
.lang-switcher { margin-left: 24px; display: flex; gap: 6px; align-items: center; }
.lang-switcher a {
    font-size: 0.85rem; font-weight: 600; padding: 6px 12px; border-radius: 20px;
    border: 1px solid rgba(0,212,255,0.3); color: var(--corp-text-gray);
}
.lang-switcher a:hover, .lang-switcher a.is-active { color: var(--corp-primary); background: var(--corp-accent); border-color: var(--corp-accent); }
.menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 10px; }
.menu-toggle span { width: 25px; height: 2px; background: var(--corp-white); transition: var(--corp-transition); }

/* ========================================
   Hero Banner (homepage)
   ======================================== */
.hero-banner { position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.hero-background { position: absolute; inset: 0; z-index: -1; }
.hero-background img { width: 100%; height: 100%; object-fit: cover; }
.hero-background::after { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(10,22,40,0.9) 0%, rgba(10,22,40,0.7) 50%, rgba(0,212,255,0.1) 100%); }
.hero-content { text-align: center; max-width: 900px; padding: 0 20px; }
.hero-content h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); margin-bottom: 1.5rem; text-shadow: 0 2px 20px rgba(0,0,0,0.3); }
.hero-content h1 span { color: var(--corp-accent); }
.hero-content p { font-size: 1.25rem; color: var(--corp-light-gray); margin-bottom: 2.5rem; max-width: 700px; margin-left: auto; margin-right: auto; }
.hero-buttons { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }

/* ========================================
   Buttons
   ======================================== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 15px 35px; font-size: 1rem; font-weight: 600; border-radius: 50px; cursor: pointer; transition: var(--corp-transition); border: none; text-transform: uppercase; letter-spacing: 1px; }
.btn-primary { background: linear-gradient(135deg, var(--corp-accent) 0%, var(--corp-accent-dark) 100%); color: var(--corp-primary); box-shadow: 0 4px 20px rgba(0,212,255,0.3); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(0,212,255,0.5); color: var(--corp-primary); }
.btn-secondary { background: transparent; color: var(--corp-white); border: 2px solid var(--corp-accent); }
.btn-secondary:hover { background: var(--corp-accent); color: var(--corp-primary); }

/* ========================================
   Highlights / Cards
   ======================================== */
.highlight-card, .why-card, .business-card {
    background: rgba(255,255,255,0.03); border: 1px solid rgba(0,212,255,0.1); border-radius: 15px; padding: 35px 25px; text-align: center; transition: var(--corp-transition);
}
.highlight-card:hover, .why-card:hover, .business-card:hover { transform: translateY(-5px); border-color: var(--corp-accent); box-shadow: var(--corp-shadow-hover); }
.highlight-icon, .why-card-icon { width: 70px; height: 70px; margin: 0 auto 20px; background: linear-gradient(135deg, var(--corp-accent) 0%, var(--corp-accent-dark) 100%); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.8rem; color: var(--corp-primary); }
.business-card { padding: 30px 22px; text-align: left; position: relative; overflow: hidden; }
.business-card.is-featured { border: 2px solid var(--corp-accent); }
.business-card .bc-tag { display: inline-block; font-size: 0.75rem; color: var(--corp-accent); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.business-card h4 { color: var(--corp-white); margin-bottom: 8px; }
.business-card p { font-size: 0.95rem; margin: 0; }
.business-card .bc-link { margin-top: 16px; display: inline-block; font-weight: 600; }
.highlight-card h4, .why-card h4 { margin-bottom: 10px; color: var(--corp-white); }
.highlight-card p, .why-card p { font-size: 0.95rem; color: var(--corp-text-gray); margin: 0; }

/* ========================================
   Section header
   ======================================== */
.section-header { text-align: center; max-width: 700px; margin: 0 auto 60px; }
.section-header h2 { margin-bottom: 1rem; }
.section-header p { font-size: 1.1rem; }

/* ========================================
   CTA Block
   ======================================== */
.cta-block { background: linear-gradient(135deg, var(--corp-accent) 0%, var(--corp-accent-dark) 100%); padding: 80px 0; text-align: center; }
.cta-block h2 { color: var(--corp-primary); margin-bottom: 1rem; }
.cta-block p { color: rgba(10,22,40,0.8); font-size: 1.15rem; margin-bottom: 2rem; }
.cta-block .btn { background: var(--corp-primary); color: var(--corp-white); }
.cta-block .btn:hover { background: var(--corp-secondary); transform: translateY(-3px); }

/* ========================================
   Business-line page (page-business.php)
   ======================================== */
.page-banner { background: var(--corp-secondary); padding: 150px 0 80px; text-align: center; position: relative; overflow: hidden; }
.page-banner::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(0,212,255,0.05) 0%, transparent 100%); }
.page-banner h1 { position: relative; margin-bottom: 0.5rem; }
.page-banner p { position: relative; font-size: 1.1rem; margin: 0; }
.business-overview { padding: 100px 0; background: var(--corp-secondary); }
.business-overview .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.overview-image { border-radius: 20px; overflow: hidden; box-shadow: var(--corp-shadow); }
.service-module { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; padding: 50px; background: rgba(255,255,255,0.02); border: 1px solid rgba(0,212,255,0.1); border-radius: 20px; margin-bottom: 40px; }
.service-module.reverse { direction: rtl; }
.service-module.reverse > * { direction: ltr; }
.service-module-content h3 { color: var(--corp-accent); margin-bottom: 1rem; }
.service-module-content ul { margin-top: 20px; }
.service-module-content li { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; color: var(--corp-text-gray); }
.service-module-content li::before { content: '\2713'; color: var(--corp-accent); font-weight: bold; }
.service-module-image { border-radius: 15px; overflow: hidden; }
.service-module-image img { width: 100%; transition: var(--corp-transition); }
.service-module:hover .service-module-image img { transform: scale(1.05); }

/* Deployment table */
.deployment-table { width: 100%; border-collapse: collapse; margin-top: 40px; background: rgba(255,255,255,0.03); border-radius: 15px; overflow: hidden; }
.deployment-table th, .deployment-table td { padding: 20px 25px; text-align: left; border-bottom: 1px solid rgba(0,212,255,0.1); }
.deployment-table th { background: rgba(0,212,255,0.1); color: var(--corp-accent); font-weight: 600; font-size: 1rem; }
.deployment-table td { color: var(--corp-text-gray); }
.deployment-table tr:hover td { background: rgba(0,212,255,0.05); }
.deployment-table .yes { color: var(--corp-success); font-weight: 700; }
.deployment-table .no { color: var(--corp-danger); font-weight: 700; }

/* Workflow timeline */
.workflow-timeline { position: relative; max-width: 1000px; margin: 60px auto 0; }
.workflow-timeline::before { content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 4px; height: 100%; background: linear-gradient(180deg, var(--corp-accent) 0%, var(--corp-accent-dark) 100%); border-radius: 2px; }
.workflow-step { position: relative; display: flex; align-items: center; margin-bottom: 50px; }
.workflow-step:nth-child(odd) { flex-direction: row-reverse; }
.workflow-step-content { width: 45%; padding: 30px; background: rgba(255,255,255,0.03); border: 1px solid rgba(0,212,255,0.1); border-radius: 15px; }
.workflow-step:nth-child(odd) .workflow-step-content { text-align: right; }
.workflow-step-number { position: absolute; left: 50%; top: 50%; transform: translate(-50%,-50%); width: 60px; height: 60px; background: linear-gradient(135deg, var(--corp-accent) 0%, var(--corp-accent-dark) 100%); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; font-weight: 700; color: var(--corp-primary); box-shadow: 0 4px 20px rgba(0,212,255,0.4); z-index: 1; }
.workflow-step h4 { color: var(--corp-accent); margin-bottom: 10px; }
.workflow-step p { font-size: 0.95rem; margin: 0; }
.workflow-step-spacer { width: 45%; }

/* Contact (business page) */
.business-contact { padding: 100px 0; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.contact-info h3 { color: var(--corp-accent); margin-bottom: 30px; }
.contact-item { display: flex; align-items: flex-start; gap: 15px; margin-bottom: 25px; }
.contact-item-icon { width: 50px; height: 50px; min-width: 50px; background: rgba(0,212,255,0.1); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: var(--corp-accent); font-size: 1.2rem; }
.contact-item h5 { color: var(--corp-white); margin-bottom: 5px; }
.contact-item p { margin: 0; font-size: 0.95rem; }
.contact-form { background: rgba(255,255,255,0.03); border: 1px solid rgba(0,212,255,0.1); border-radius: 20px; padding: 40px; }
.contact-form h3 { color: var(--corp-white); margin-bottom: 30px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; color: var(--corp-light-gray); font-weight: 500; }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 15px 20px; background: rgba(255,255,255,0.05); border: 1px solid rgba(0,212,255,0.2); border-radius: 10px; color: var(--corp-white); font-size: 1rem; transition: var(--corp-transition); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--corp-accent); background: rgba(0,212,255,0.05); }
.form-group textarea { min-height: 150px; resize: vertical; }

/* ========================================
   Footer
   ======================================== */
.site-footer { background: var(--corp-primary); border-top: 1px solid rgba(0,212,255,0.1); padding: 60px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-about p { font-size: 0.95rem; margin-bottom: 20px; }
.footer-links h5 { color: var(--corp-white); margin-bottom: 20px; font-size: 1rem; }
.footer-links ul li { margin-bottom: 12px; }
.footer-links a { color: var(--corp-text-gray); font-size: 0.95rem; }
.footer-links a:hover { color: var(--corp-accent); }
.footer-bottom { padding-top: 30px; border-top: 1px solid rgba(0,212,255,0.1); text-align: center; }
.footer-bottom p { font-size: 0.9rem; margin: 0; color: var(--corp-text-gray); }

/* ========================================
   Page (generic)
   ======================================== */
.site-main { padding-top: 100px; }
.page-template .site-main { padding-top: 100px; }
.entry-content { max-width: 900px; margin: 0 auto; padding: 60px 20px; }
.entry-content img { border-radius: 12px; margin: 20px 0; }

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .business-overview .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .service-module { grid-template-columns: 1fr; padding: 30px; }
    .service-module.reverse { direction: ltr; }
}
@media (max-width: 768px) {
    .section { padding: 60px 0; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .main-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--corp-primary); padding: 20px; border-top: 1px solid rgba(0,212,255,0.1); }
    .main-nav.active { display: block; }
    .main-nav ul { flex-direction: column; gap: 15px; }
    .menu-toggle { display: flex; }
    .menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .menu-toggle.active span:nth-child(2) { opacity: 0; }
    .menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
    .workflow-timeline::before { left: 30px; }
    .workflow-step, .workflow-step:nth-child(odd) { flex-direction: column; align-items: flex-start; padding-left: 70px; }
    .workflow-step-content, .workflow-step:nth-child(odd) .workflow-step-content { width: 100%; text-align: left; }
    .workflow-step-spacer { display: none; }
    .workflow-step-number { left: 30px; width: 50px; height: 50px; font-size: 1.2rem; }
    .footer-grid { grid-template-columns: 1fr; text-align: center; }
    .deployment-table { font-size: 0.9rem; }
    .deployment-table th, .deployment-table td { padding: 15px 12px; }
}