:root {
    --primary: #0f172a;       /* Dark Navy */
    --accent: #2563eb;        /* Royal Blue */
    --accent-hover: #1d4ed8;
    --bg-body: #f8fafc;       /* Light Gray-Blue */
    --bg-card: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 8px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    margin: 0;
    line-height: 1.5;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* HEADER */
header {
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}
.logo span { color: var(--accent); }

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* NAVIGATION */
nav button {
    background: transparent;
    border: none;
    padding: 0.5rem 1rem;
    color: var(--text-muted);
    font-weight: 600;
    cursor: pointer;
    transition: color 0.2s;
    font-size: 0.95rem;
}
nav button:hover, nav button.active {
    color: var(--accent);
}

/* BUTTONS */
.btn {
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
    border: none;
}
.btn-primary {
    background-color: var(--accent);
    color: white;
}
.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}
.btn-outline {
    background-color: white;
    border: 1px solid var(--border);
    color: var(--text-main);
}
.btn-outline:hover {
    background-color: #f1f5f9;
}

/* MAIN LAYOUT */
main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
    width: 100%;
    box-sizing: border-box;
    flex: 1;
}

/* SEARCH BAR */
.search-container {
    position: relative;
    margin-bottom: 2rem;
}
.search-input {
    width: 100%;
    padding: 1rem 1.5rem;
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 1rem;
    box-shadow: var(--shadow);
    box-sizing: border-box;
    outline: none;
    transition: border-color 0.2s;
}
.search-input:focus { border-color: var(--accent); }

/* JOB GRID */
.job-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.job-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.job-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border-color: var(--accent);
}
.job-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 0 0 0.5rem 0;
}
.job-company {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}
.tag {
    background: #eff6ff;
    color: var(--accent);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* MODALS */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
}
.modal-content {
    background-color: white;
    padding: 2rem;
    border-radius: 12px;
    width: 100%;
    max-width: 400px;
    position: relative;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}
.close {
    position: absolute;
    right: 1.5rem;
    top: 1rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
}
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.5rem; }
.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    box-sizing: border-box;
}

/* FOOTER */
footer {
    background: var(--primary);
    color: white;
    padding: 2rem;
    text-align: center;
    margin-top: auto;
}
footer a { color: var(--accent); text-decoration: none; }

/* Letter Logo Fallback */
.company-logo-container {
    width: 50px;
    height: 50px;
    min-width: 50px;
    border-radius: 12px;
    background: linear-gradient(135deg, #64FFDA, #48D1CC);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0A192F;
    font-weight: bold;
    font-size: 22px;
    text-transform: uppercase;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.job-card img {
    width: 50px;
    height: 50px;
    border-radius: 8px;
    object-fit: contain;
    background: white;
}