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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: #fff;
    min-height: 100vh;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
}

/* Header Styles */
.header {
    background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo img {
    border-radius: 50%;
    border: 3px solid white;
}

.logo h1 {
    font-size: 2rem;
    font-weight: bold;
}

.company-info h2 {
    font-size: 1.3rem;
    margin-bottom: 5px;
}

.company-info p {
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Job Header */
.job-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.job-title h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.location {
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 0.9;
}

.viettel-logo img {
    background: white;
    padding: 10px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Main Content */
.main-content {
    padding: 0;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 0;
    min-height: calc(100vh - 200px);
}

/* Job Details */
.job-details {
    padding: 40px;
    background: #f8f9fa;
}

.job-section {
    margin-bottom: 40px;
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-left: 5px solid #FF6B35;
}

.job-section h3 {
    color: #FF6B35;
    font-size: 1.4rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.job-section ul {
    list-style: none;
    padding: 0;
}

.job-section li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    line-height: 1.6;
}

.job-section li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

.work-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 20px;
}

.work-location,
.work-time {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    border-left: 3px solid #667eea;
}

.work-location h4,
.work-time h4 {
    color: #667eea;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.benefits {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 15px;
}

.salary {
    background: linear-gradient(135deg, #28a745, #20c997);
    color: white;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    text-align: center;
}

.salary h4 {
    margin-bottom: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.salary-amount {
    font-size: 1.3rem;
    font-weight: bold;
}

/* Registration Form */
.registration-form {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.form-container {
    padding: 30px;
    height: 100%;
}

.form-container h3 {
    color: white;
    font-size: 1.5rem;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.form-note {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 25px;
    font-style: italic;
    line-height: 1.5;
}

.registration-form-content {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 60px;
}

.checkbox-group {
    margin: 25px 0;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    cursor: pointer;
    line-height: 1.5;
    font-weight: normal;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
    transform: scale(1.2);
}

.submit-btn {
    width: 100%;
    background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 1.1rem;
    font-weight: bold;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 107, 53, 0.3);
}

.submit-btn:active {
    transform: translateY(0);
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    padding: 30px 20px 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 20px;
}

.footer h4 {
    margin-bottom: 15px;
    color: #FF6B35;
}

.footer p {
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.social-link {
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.3s ease;
    width: fit-content;
}

.social-link:hover {
    background: #FF6B35;
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #34495e;
    opacity: 0.8;
}

/* Success Message */
.success-message {
    background: linear-gradient(135deg, #28a745, #20c997);
    color: white;
    padding: 20px;
    border-radius: 8px;
    margin: 20px 0;
    text-align: center;
    display: none;
}

.success-message.show {
    display: block;
    animation: slideIn 0.5s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 992px) {
    .content-grid {
        grid-template-columns: 1fr;
    }

    .registration-form {
        position: static;
        height: auto;
    }

    .form-container {
        height: auto;
    }
}

@media (max-width: 768px) {

    /* Mobile-specific improvements for date input */
    .form-group input[type="date"] {
        font-size: 16px;
        /* Prevent zoom on iOS */
        min-height: 48px;
        /* Better touch target */
        -webkit-appearance: none;
        -moz-appearance: none;
        appearance: none;
    }

    .form-group input[type="date"]::-webkit-calendar-picker-indicator {
        background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%23667eea" viewBox="0 0 16 16"><path d="M8 1a.5.5 0 0 1 .5.5v1h4.793a.5.5 0 0 1 .353.854L9.354 7.646a.5.5 0 0 1-.708 0L4.354 3.354A.5.5 0 0 1 4.707 2.5H9.5v-1A.5.5 0 0 1 8 1z"/></svg>') no-repeat;
        background-size: 16px 16px;
        cursor: pointer;
    }

    .form-group input[type="date"]:focus {
        border-color: #FF6B35;
        box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
    }

    .header {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }

    .content-grid {
        grid-template-columns: 1fr;
    }

    .registration-form {
        position: static;
        height: auto;
    }

    .form-container {
        height: auto;
    }
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }

    .job-header {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }

    .job-title h1 {
        font-size: 2rem;
    }

    .work-info {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .job-details {
        padding: 20px;
    }

    .job-section {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        margin: 0;
    }

    .header,
    .job-header {
        padding: 15px;
    }

    .logo h1 {
        font-size: 1.5rem;
    }

    .job-title h1 {
        font-size: 1.5rem;
    }

    .form-container {
        padding: 15px;
    }

    .registration-form-content {
        padding: 20px;
    }
}