/* =========================
   BASE STYLE STUFF
========================= */

body {
    margin: 0;
    padding: 0;
    font-family: "Helvetica Neue", Arial, sans-serif;
    background-color: #f4f6f8;
    color: #1f2933;
    line-height: 1.6;
}

/* Centered page container like lab modules */
.container {
    max-width: 900px;
    margin: 60px auto;
    padding: 40px;
    background: #ffffff;
    border: 1px solid #d9e2ec;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

/* =========================
   TYPOGRAPHY SHIT
========================= */

h1, h2, h3 {
    font-weight: 600;
    color: #102a43;
    margin-top: 0;
}

h1 {
    font-size: 28px;
    margin-bottom: 20px;
}

h2 {
    font-size: 22px;
    margin-bottom: 15px;
}

p {
    margin-bottom: 15px;
}

/* “lab manual” header feel */
.header {
    border-bottom: 2px solid #e1e8ed;
    padding-bottom: 15px;
    margin-bottom: 25px;
}

/* =========================
   BUTTONS!!
========================= */

button, .button {
    display: inline-block;
    padding: 10px 18px;
    font-size: 15px;
    border: 1px solid #bcccdc;
    background-color: #f0f4f8;
    color: #102a43;
    cursor: pointer;
    transition: 0.2s ease;
    text-decoration: none;
}

button:hover, .button:hover {
    background-color: #e4e7eb;
}

/* Primary action (Next / Submit / Continue) */
.button-primary {
    background-color: #4a90e2;
    color: white;
    border: none;
}

.button-primary:hover {
    background-color: #1f57c3;
}

/* Arrow to click links */
.arrow-link {
    font-size: 18px;
    margin-top: 30px;
    display: inline-block;
}

/* =========================
   FORMS (Prelab / Quiz)
========================= */

label {
    display: block;
    padding: 10px;
    margin-bottom: 8px;
    border: 1px solid #d9e2ec;
    background: #f8fafc;
    cursor: pointer;
    transition: 0.15s;
}

label:hover {
    background: #e6f0ff;
    border-color: #9fb3c8;
}

/* Radio buttons */
input[type="radio"] {
    margin-right: 10px;
}

/* Selected answer styling  */
.selected {
    background-color: #dbeafe;
    border-color: #3b82f6;
}

/* =========================
   LAB SECTIONS
========================= */

.section {
    margin-bottom: 40px;
}

.section-divider {
    border-top: 1px solid #e1e8ed;
    margin: 30px 0;
}

/* =========================
   TABLES (data collection stuff but i dont know if im using these.)
========================= */

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
    background: white;
}

th, td {
    border: 1px solid #d9e2ec;
    padding: 10px;
    text-align: left;
}

th {
    background: #f0f4f8;
    font-weight: 600;
}

/* =========================
   UI DETAILS IN CASE I NEED THEM
========================= */

.note {
    font-size: 13px;
    color: #52606d;
    background: #f0f4f8;
    padding: 10px;
    border-left: 4px solid #bcccdc;
    margin: 15px 0;
}

.warning {
    background: #8ec0fb;
    border-left: 4px solid #4a90e2;
    padding: 10px;
    font-size: 13px;
}

/* =========================
   SIMULATION AREA 
========================= */

.simulation-box {
    background: #0f172a;
    color: #e2e8f0;
    padding: 20px;
    font-family: monospace;
    border-radius: 4px;
}