@import url('https://fonts.googleapis.com/css2?family=Google+Sans:wght@400;500;600;700&family=Inter:wght@400;500;600;700&display=swap');

:root {
    /* Google Dark Theme — solid colors */
    --win-bg: #202124;
    --win-surface: #303134;
    --win-surface-hover: #3c4043;
    --win-border: #5f6368;
    --win-text-primary: #e8eaed;
    --win-text-secondary: #9aa0a6;
    --win-accent: #8ab4f8;
    --win-accent-hover: #aecbfa;
    --win-radius: 8px;
    --win-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 4px 8px rgba(0, 0, 0, 0.15);
}

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

body {
    font-family: 'Google Sans', 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--win-bg);
    color: var(--win-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navbar */
.win-navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--win-surface);
    border-bottom: 1px solid var(--win-border);
    padding: 0.75rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.win-navbar-brand {
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--win-text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.win-navbar-nav {
    display: flex;
    list-style: none;
    gap: 0.5rem;
}

.win-nav-item {
    padding: 0.5rem 1rem;
    color: var(--win-text-secondary);
    text-decoration: none;
    border-radius: var(--win-radius);
    transition: all 0.2s ease;
    font-size: 0.9rem;
    font-weight: 500;
}

.win-nav-item:hover {
    background: var(--win-surface-hover);
    color: var(--win-text-primary);
}

.win-nav-item.active {
    color: var(--win-accent);
}

/* Container */
.container {
    max-width: 98%;
    margin: 0 auto;
    padding: 1rem;
    flex: 1;
    width: 100%;
    display: flex;
    flex-direction: column;
}

/* App Grid Layout */
.app-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
    flex: 1;
    min-height: 0;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--win-surface);
    border-radius: var(--win-radius);
    border: 1px solid var(--win-border);
    margin-top: 2rem;
    box-shadow: var(--win-shadow);
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--win-text-primary);
}

.hero p {
    color: var(--win-text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

/* Google-style button */
.btn-primary {
    background-color: var(--win-accent);
    color: #202124;
    border: none;
    padding: 0.6rem 1.5rem;
    border-radius: var(--win-radius);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary:hover {
    background-color: var(--win-accent-hover);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* Feature cards */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--win-surface);
    border: 1px solid var(--win-border);
    border-radius: var(--win-radius);
    padding: 1.5rem;
    transition: all 0.2s ease;
}

.feature-card:hover {
    background: var(--win-surface-hover);
    transform: translateY(-2px);
    box-shadow: var(--win-shadow);
}

.feature-icon {
    font-size: 1.5rem;
    color: var(--win-accent);
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--win-text-secondary);
    font-size: 0.9rem;
}

/* DXF Workspace */
.dxf-workspace {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 120px);
    gap: 1rem;
}

.dxf-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--win-surface);
    border: 1px solid var(--win-border);
    border-radius: var(--win-radius);
}

.selection-info {
    color: var(--win-text-secondary);
    font-size: 0.9rem;
}

.selection-info h3 {
    color: var(--win-accent);
    margin-bottom: 0.2rem;
    font-size: 1rem;
}

.canvas-container {
    flex: 1;
    position: relative;
    background: #171717;
    border: 1px solid var(--win-border);
    border-radius: var(--win-radius);
    overflow: hidden;
    cursor: crosshair;
}

#dxf-canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.selection-box {
    position: absolute;
    border: 1px solid var(--win-accent);
    background: rgba(138, 180, 248, 0.15);
    pointer-events: none;
    display: none;
    z-index: 10;
}

/* Win-card (used for manual page) */
.win-card {
    background: var(--win-surface);
    border: 1px solid var(--win-border);
    border-radius: var(--win-radius);
    overflow: hidden;
}

.win-card-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--win-border);
}

.win-card-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--win-text-primary);
}

.win-card-body {
    padding: 1.5rem;
    color: var(--win-text-secondary);
}

/* Win-btn (used in manual page) */
.win-btn {
    display: inline-block;
    background: var(--win-accent);
    color: #202124;
    padding: 0.6rem 1.5rem;
    border-radius: var(--win-radius);
    font-weight: 500;
    font-size: 0.95rem;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.win-btn:hover {
    background: var(--win-accent-hover);
}