/*
Theme Name: BYCN Corporate
Theme URI: https://bycn-it.vn
Author: BYCN IT VN
Author URI: https://bycn-it.vn
Description: A modern, minimalist corporate theme for Bouygues Construction Vietnam IT Services
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: bycn-corporate
Tags: corporate, modern, minimalist, responsive
*/

/* ========================
   CSS RESET & BASE STYLES
   ======================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-orange: #FF6600;
    --safety-orange: #FF5500;
    --slate-grey: #4A5568;
    --navy: #1A202C;
    --light-grey: #F7FAFC;
    --white: #FFFFFF;
    --success-green: #10B981;
    --info-blue: #3B82F6;
    --warning-amber: #F59E0B;
    --danger-red: #EF4444;
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--navy);
    background: var(--white);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

/* ========================
   CONTAINER & LAYOUT
   ======================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding:10px 0;
}

/* ========================
   HEADER & NAVIGATION
   ======================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.site-logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-orange);
}

.site-logo span {
    color: var(--primary-orange);
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

.main-nav a {
    color: var(--slate-grey);
    font-weight: 500;
    transition: var(--transition);
}

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--navy);
    cursor: pointer;
}

/* ========================
   HERO SECTION
   ======================== */
.hero-section {
    position: relative;
    height: 450px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    margin-top: 70px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: 24px;
    margin-bottom: 30px;
    opacity: 0.95;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 40px;
    animation: fadeInUp 1.2s ease-out 0.4s both;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-orange);
}

.stat-label {
    font-size: 14px;
    opacity: 0.9;
    margin-top: 5px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 40px;
    animation: fadeInUp 1.4s ease-out 0.6s both;
}

.btn {
    padding: 14px 32px;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 16px;
    display: inline-block;
}

.btn-primary {
    background: var(--primary-orange);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(255, 102, 0, 0.3);
}

.btn-primary:hover {
    background: var(--safety-orange);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 102, 0, 0.4);
}

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

.btn-secondary:hover {
    background: var(--white);
    color: var(--navy);
}

/* ========================
   ABOUT SECTION
   ======================== */
.about-section {
    background: var(--white);
    padding-top: 20px;
    padding-bottom: 40px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    color: var(--navy);
}

.about-content {
    display: block;
    max-width: 900px;
    margin: 0 auto;
}

.about-text h3 {
    font-size: 28px;
    color: var(--navy);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--slate-grey);
    line-height: 1.8;
    margin-bottom: 15px;
}

.about-mission {
    background: linear-gradient(135deg, #F7FAFC 0%, #EDF2F7 100%);
    padding: 30px;
    border-radius: var(--border-radius);
    margin-top: 30px;
    border-left: 4px solid var(--primary-orange);
}

.about-mission h4 {
    color: var(--navy);
    font-size: 20px;
    margin-bottom: 10px;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

/* ========================
   SERVICES SECTION
   ======================== */
.services-section {
    background: var(--light-grey);
    padding-top: 10px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 10px;
}

.service-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.8);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-orange);
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(255, 102, 0, 0.15);
    background: var(--white);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-orange);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 28px;
    color: var(--white);
}

.service-card h3 {
    font-size: 22px;
    color: var(--navy);
    margin-bottom: 15px;
}

.service-card p {
    color: var(--slate-grey);
    line-height: 1.6;
}

/* ========================
   VALUES SECTION
   ======================== */
.values-section {
    background: var(--white);
    text-align: center;
    padding-bottom: 20px;
}

.values-flow {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-top: 10px;
    flex-wrap: wrap;
}

.value-step {
    position: relative;
    color: white;
    padding: 20px 40px;
    font-size: 18px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    clip-path: polygon(0px 0px, calc(100% - 20px) 0px, 100% 50%, calc(100% - 20px) 100%, 0px 100%, 20px 50%);
    min-width: 200px;
    height: 70px;
}

.value-step.respect { background-color: #f3722c; }
.value-step.commitment { background-color: #2772db; }
.value-step.pioneering { background-color: #5cb85c; }
.value-step.sharing { background-color: #d9534f; }

.value-step:not(:last-child) {
    margin-right: -20px;
}

.value-step:not(:first-child)::before {
    content: '';
    position: absolute;
    left: -30px;
    top: 50%;
    width: 20px;
    height: 2px;
    background-color: #ccc;
    transform: translateY(-50%);
}

@media (max-width: 968px) {
    .values-flow {
        flex-direction: column;
        gap: 15px;
    }
    .value-step {
        clip-path: polygon(0% 0%, 90% 0, 100% 50%, 90% 100%, 0% 100%);
        width: 80%;
    }
    .value-step:not(:last-child) {
        margin-right: 0;
        margin-bottom: -10px;
    }
}

@media (max-width: 768px) {
    .value-step {
        width: 90%;
        padding: 15px 30px;
        font-size: 16px;
        height: 60px;
    }
}

/* ========================
   REQUIREMENTS SECTION
   ======================== */
.requirements-section .container {
    background-color: #FFF7F0;
    border-radius: 20px;
    padding: 50px;
    max-width: 900px;
}

.requirements-list {
    margin-top: 30px;
    list-style: none;
    padding-left: 0;
}

.requirement-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    font-size: 16px;
    color: var(--slate-grey);
}

.requirement-icon {
    width: 24px;
    height: 24px;
    background: var(--primary-orange);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: bold;
    flex-shrink: 0;
}

.requirement-text {
    color: var(--slate-grey);
    font-size: 16px;
}

/* ========================
   JOBS SECTION
   ======================== */
.jobs-section {
    background: var(--white);
    padding-top: 40px;
}

.jobs-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 30px 0 50px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    background: var(--light-grey);
    border: none;
    border-radius: 25px;
    color: var(--slate-grey);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-orange);
    color: var(--white);
}

.jobs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.job-card {
    background: var(--white);
    border: 1px solid #E2E8F0;
    border-radius: var(--border-radius);
    padding: 30px;
    transition: var(--transition);
}

.job-card:hover {
    border-color: var(--primary-orange);
    box-shadow: 0 10px 30px rgba(255, 102, 0, 0.1);
    transform: translateY(-5px);
}

.job-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 15px;
}

.job-category {
    background: var(--navy);
    color: var(--white);
    padding: 5px 12px;
    border-radius: 5px;
    font-size: 12px;
    font-weight: 600;
}

.job-time {
    color: var(--slate-grey);
    font-size: 13px;
}

.job-title {
    font-size: 20px;
    color: var(--navy);
    margin-bottom: 15px;
    font-weight: 600;
}

.job-description {
    color: var(--slate-grey);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 20px;
}

.job-details {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.job-detail {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--slate-grey);
    font-size: 14px;
}

.job-detail svg {
    color: var(--primary-orange);
}

.job-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.job-tag {
    padding: 5px 12px;
    background: var(--light-grey);
    border-radius: 20px;
    font-size: 12px;
    color: var(--slate-grey);
    font-weight: 500;
}

.job-apply-btn {
    width: 100%;
    padding: 12px;
    background: var(--primary-orange);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.job-apply-btn:hover {
    background: var(--safety-orange);
    transform: scale(1.02);
}

.cta-section {
    background: linear-gradient(135deg, var(--primary-orange), #FF8833);
    border-radius: 20px;
    padding: 60px;
    text-align: center;
    margin-top: 80px;
    color: var(--white);
}

.cta-section h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.95;
}

.cta-section .btn-secondary {
    background: var(--white);
    color: var(--primary-orange);
    border: none;
}

.cta-section .btn-secondary:hover {
    background: var(--light-grey);
}

/* ========================
   FOOTER
   ======================== */
.site-footer {
    background: var(--navy);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 20px;
    margin-bottom: 20px;
}

.footer-section p,
.footer-section li {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

.footer-section ul {
    list-style: none;
}

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

.footer-section a:hover {
    color: var(--primary-orange);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-orange);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* ========================
   ANIMATIONS
   ======================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================
   RESPONSIVE DESIGN
   ======================== */
@media (max-width: 968px) {
    .hero-title {
        font-size: 42px;
    }
    
    .services-grid,
    .jobs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content,
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .main-nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: var(--white);
        transition: var(--transition);
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    }
    
    .main-nav.active {
        left: 0;
    }
    
    .main-nav ul {
        flex-direction: column;
        padding: 20px;
        gap: 0;
    }
    
    .main-nav li {
        border-bottom: 1px solid var(--light-grey);
        padding: 15px 0;
    }
    
    .hero-section {
        height: 350px;
    }
    
    .hero-title {
        font-size: 28px;
        margin-bottom: 15px;
    }
    
    .hero-subtitle {
        font-size: 14px;
        margin-bottom: 20px;
    }
    
    .hero-stats {
        flex-direction: row;
        gap: 30px;
        margin-top: 25px;
        margin-bottom: 25px;
    }
    
    .stat-number {
        font-size: 32px;
    }
    
    .stat-label {
        font-size: 12px;
    }
    
    .hero-buttons {
        flex-direction: row;
        gap: 10px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .services-grid,
    .jobs-grid {
        grid-template-columns: 1fr;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 32px;
    }
}