:root {
    --background: #111827;
    --surface: #1F2937;
    --primary: #3B82F6;
    --primary-hover: #2563EB;
    --text-main: #F9FAFB;
    --text-secondary: #9CA3AF;
    --border: #374151;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--background);
    color: var(--text-main);
    line-height: 1.6;
    font-size: 16px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.main-image {
    width: 100%;
    border-radius: 12px;
    margin-bottom: 2rem;
    display: block;
}

.card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
}

h1, h2, h3 {
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

h2 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: var(--text-main);
}

h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-main);
    margin-top: 1.5rem;
    margin-bottom: 0.25rem;
}

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

a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

/* Grid Layout for Role & Stack */
.grid-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

#the-role ul {
    list-style: none;
    padding-left: 0;
}

#the-role li {
    padding-left: 1.5em;
    position: relative;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

#the-role li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
}

.stack-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.stack-grid span {
    background-color: var(--border);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 0.9rem;
    text-align: center;
    color: var(--text-main);
}

/* Offer Section */
.offer-items {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}
.offer-item h3 {
    margin-bottom: 0.25rem;
    font-weight: 600;
}

/* Referral Card */
.referral-card {
    text-align: center;
    background: linear-gradient(45deg, var(--surface), #2a3547);
}

/* Form Section */
.apply-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
}

.form-group input,
.form-group textarea {
    background-color: var(--background);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.75rem;
    color: var(--text-main);
    font-size: 1rem;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

textarea {
    resize: vertical;
}

/* Custom File Upload */
input[type="file"] {
    display: none;
}
.file-label {
    background-color: var(--border);
    color: var(--text-secondary);
    padding: 0.75rem;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.2s ease;
}
.file-label:hover {
    background-color: #4B5563;
}
#file-name {
    font-style: italic;
}


.submit-button {
    background-color: var(--primary);
    color: white;
    padding: 1rem;
    border-radius: 8px;
    font-size: 1.125rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s ease;
}
.submit-button:hover {
    background-color: var(--primary-hover);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .grid-layout, .form-row, .offer-items {
        grid-template-columns: 1fr;
    }
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
}