/* Variables - Windows Utility Theme */
:root {
    --win-blue: #0078D7;
    --win-blue-hover: #0063B1;
    --win-green: #217346;
    /* More utilitarian green */
    --win-text: #000000;
    --win-text-secondary: #666666;
    --bg-page: #F0F0F0;
    /* Classic Windows gray bg */
    --bg-panel: #FFFFFF;
    --border-color: #D9D9D9;
    --border-active: #7A7A7A;
    --font-stack: 'Roboto', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --max-width: 1000px;
    /* Tighter layout like a fixed-width app window */
    --header-height: 50px;
}

@font-face {
    font-family: 'Roboto';
    font-style: normal;
    font-weight: 400;
    src: url('assets/fonts/Roboto-Regular.woff2') format('woff2');
    font-display: swap;
}

@font-face {
    font-family: 'Roboto';
    font-style: normal;
    font-weight: 500;
    src: url('assets/fonts/Roboto-Medium.woff2') format('woff2');
    font-display: swap;
}

@font-face {
    font-family: 'Roboto';
    font-style: normal;
    font-weight: 700;
    src: url('assets/fonts/Roboto-Bold.woff2') format('woff2');
    font-display: swap;
}

/* Reset & Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-stack);
    color: var(--win-text);
    line-height: 1.5;
    background-color: var(--bg-page);
    -webkit-font-smoothing: antialiased;
    font-size: 15px;
    /* Slightly smaller, denser font like UI */
}

a {
    color: var(--win-blue);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

h1,
h2,
h3 {
    font-weight: 600;
    color: var(--win-text);
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--win-blue);
    /* Section underline like a tab active state */
    padding-bottom: 5px;
    display: inline-block;
}

p {
    margin-bottom: 0.8rem;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 15px;
}

/* Component: Panel (GroupBox style) */
.panel {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    /* Very subtle shadow */
}

/* Buttons - Windows Style */
.btn {
    display: inline-block;
    padding: 6px 20px;
    font-size: 14px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.1s;
    text-align: center;
    min-width: 100px;
}

/* Primary "Action" Button (Download) */
.btn-primary {
    background-color: var(--win-blue);
    /* Blue is typical for default actions in Win10 */
    color: white;
    border: 1px solid #005A9E;
}

.btn-primary:hover {
    background-color: var(--win-blue-hover);
    text-decoration: none;
}

/* Success Button (Alternate Download) */
.btn-success {
    background-color: var(--win-green);
    color: white;
    border: 1px solid #1e6b3e;
}

.btn-success:hover {
    background-color: #1a5c35;
    text-decoration: none;
}

/* Header - App Toolbar Style */
header {
    background-color: #FFFFFF;
    border-bottom: 1px solid #CCCCCC;
    height: var(--header-height);
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 16px;
    text-decoration: none !important;
    color: #000;
}

header a {
    text-decoration: none !important;
}

.logo img {
    height: 24px;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 5px;
}

nav a {
    color: var(--win-text);
    padding: 8px 12px;
    font-size: 14px;
    border: 1px solid transparent;
}

nav a:hover {
    background-color: #E6F7FF;
    /* Light blue hover */
    border-color: #CCE8FF;
    text-decoration: none;
}

/* Hero Section */
#hero {
    padding: 40px 0;
    background-color: var(--bg-page);
}

.hero-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 30px;
    align-items: start;
}

.hero-text-panel {
    background: white;
    padding: 30px;
    border: 1px solid var(--border-color);
}

.hero-image-panel {
    background: white;
    padding: 10px;
    border: 1px solid var(--border-color);
}

#hero h1 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--win-blue);
}

.intro-lead {
    font-size: 16px;
    margin-bottom: 20px;
    color: #444;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 15px;
}

.feature-item {
    background: white;
    border: 1px solid var(--border-color);
    padding: 15px;
    display: flex;
    flex-direction: column;
}

.feature-header {
    background-color: #F7F7F7;
    margin: -15px -15px 15px -15px;
    padding: 10px 15px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    font-size: 14px;
    border-left: 3px solid var(--win-blue);
}

.feature-item p {
    font-size: 13px;
    margin: 0;
    color: #555;
}

/* Download Section */
.download-area {
    background: #E6F7FF;
    /* Very light blue background */
    border: 1px solid #CCE8FF;
    padding: 30px;
    text-align: center;
    margin-top: 20px;
}

.download-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
}

/* Detailed Guide / Steps */
.step-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
    margin-top: 20px;
}

.guide-step {
    display: flex;
    gap: 30px;
    align-items: flex-start;
    background: white;
    border: 1px solid var(--border-color);
    padding: 20px;
}

.guide-step:nth-child(even) {
    flex-direction: row-reverse;
}

.step-text-content {
    flex: 1;
}

.step-header {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--win-blue);
    display: flex;
    align-items: center;
    gap: 10px;
}

.step-badge {
    background: var(--win-blue);
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
}

.step-image {
    flex: 1;
    max-width: 400px;
    border: 1px solid #DDD;
    padding: 5px;
    background: #FAFAFA;
}

/* Requirements Table */
.req-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    background: white;
}

.req-table th,
.req-table td {
    border: 1px solid #CCC;
    padding: 8px 12px;
    text-align: left;
}

.req-table th {
    background-color: #F0F0F0;
    font-weight: 600;
}

/* Accordion */
.accordion-item {
    border: 1px solid var(--border-color);
    background: white;
    margin-bottom: -1px;
    /* Collapse borders */
}

.accordion-header {
    padding: 12px 15px;
    background: #F9F9F9;
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    display: flex;
    justify-content: space-between;
}

.accordion-header:hover {
    background: #F0F0F0;
}

.accordion-content {
    padding: 15px;
    display: none;
    border-top: 1px solid var(--border-color);
    font-size: 14px;
}

.accordion-content.active {
    display: block;
}

/* Footer */
footer {
    border-top: 1px solid #CCC;
    padding: 20px 0;
    margin-top: 40px;
    background: #E1E1E1;
    font-size: 13px;
    color: #555;
    text-align: center;
}

footer a {
    margin: 0 10px;
    color: #444;
}

/* Mobile */
@media (max-width: 768px) {

    .hero-layout,
    .guide-step,
    .guide-step:nth-child(even) {
        grid-template-columns: 1fr;
        flex-direction: column;
    }

    .step-image {
        max-width: 100%;
    }
}


.step-container img {
    width: 100%;
}