/* includes/style.css */
:root {
    --ms-blue: #0078D4;
    --ms-blue-hover: #106EBE;
    --ms-bg: #faf9f8;
    --ms-surface: #ffffff;
    --ms-text: #201f1e;
    --ms-text-muted: #605e5c;
    --ms-border: #edebe9;
    --ms-shadow: 0 3.2px 7.2px 0 rgba(0,0,0,.132), 0 0.6px 1.8px 0 rgba(0,0,0,.108);
    --radius: 8px;
}

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

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
    background-color: var(--ms-bg);
    color: var(--ms-text);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Navbar */
header {
    background-color: var(--ms-surface);
    border-bottom: 1px solid var(--ms-border);
    padding: 0 20px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 20px;
    font-weight: 600;
    color: var(--ms-blue);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links a {
    text-decoration: none;
    color: var(--ms-text);
    margin-left: 20px;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--ms-blue);
}

.btn-primary {
    background-color: var(--ms-blue);
    color: white !important;
    padding: 8px 16px;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.2s;
}

.btn-primary:hover {
    background-color: var(--ms-blue-hover);
}

/* Layout */
main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 20px;
}

/* Landing Page Hero & Upload Box */
.hero-text {
    text-align: center;
    margin-bottom: 40px;
}

.hero-text h1 {
    font-size: 42px;
    font-weight: 600;
    margin-bottom: 10px;
}

.hero-text p {
    font-size: 18px;
    color: var(--ms-text-muted);
}

.upload-card {
    background: var(--ms-surface);
    width: 100%;
    max-width: 600px;
    border-radius: var(--radius);
    box-shadow: var(--ms-shadow);
    padding: 30px;
}

.drop-zone {
    border: 2px dashed var(--ms-border);
    border-radius: var(--radius);
    padding: 50px 20px;
    text-align: center;
    background-color: var(--ms-bg);
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s;
    margin-bottom: 20px;
}

.drop-zone:hover {
    border-color: var(--ms-blue);
    background-color: #f3f2f1;
}

.drop-zone svg {
    width: 48px;
    height: 48px;
    color: var(--ms-blue);
    margin-bottom: 10px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 5px;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--ms-border);
    border-radius: 4px;
    font-family: inherit;
    font-size: 14px;
}

.form-control:focus {
    outline: none;
    border-color: var(--ms-blue);
}

.settings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 20px;
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    background-color: var(--ms-surface);
    border-top: 1px solid var(--ms-border);
    color: var(--ms-text-muted);
    font-size: 12px;
}