:root {

    --primary: #0056b3;

    --primary-light: #e3f2fd;

    --accent: #ffc107;

    --success: #28a745;

    --text: #2d3748;

    --text-light: #718096;

    --bg: #f8f9fa;

    --white: #ffffff;

    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);

    --shadow-md: 0 10px 15px rgba(0, 0, 0, 0.1);

    --shadow-lg: 0 20px 25px rgba(0, 0, 0, 0.15);

    --radius: 12px;

}



* {

    margin: 0;

    padding: 0;

    box-sizing: border-box;

    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;

}



body {

    background: var(--bg);

    color: var(--text);

    line-height: 1.6;

}



.container {

    max-width: 1200px;

    margin: 0 auto;

    padding: 0 20px;

}



/* Header & Nav */

.navbar {

    background: rgba(255, 255, 255, 0.95);

    backdrop-filter: blur(10px);

    position: sticky;

    top: 0;

    z-index: 1000;

    box-shadow: var(--shadow-sm);

    padding: 1rem 0;

}



.nav-content {

    display: flex;

    justify-content: space-between;

    align-items: center;

}



.logo {

    font-size: 1.8rem;

    font-weight: 800;

    color: var(--primary);

    text-decoration: none;

    display: flex;

    align-items: center;

    gap: 10px;

}



.logo span {

    color: var(--accent);

}



.nav-links a {

    color: var(--text);

    text-decoration: none;

    margin-left: 2rem;

    font-weight: 500;

    transition: color 0.3s;

}



.nav-links a:hover {

    color: var(--primary);

}



.btn {
    background: #2563eb;\n    background: #2563eb;

    padding: 0.8rem 1.5rem;

    border-radius: 50px;

    text-decoration: none;

    font-weight: 600;

    transition: all 0.3s;

    display: inline-block;

    cursor: pointer;

    border: none;

}



.btn-primary {

    background: var(--primary);

    color: white;

    box-shadow: 0 4px 15px rgba(0, 86, 179, 0.3);

}



.btn-primary:hover {

    transform: translateY(-2px);

    box-shadow: 0 6px 20px rgba(0, 86, 179, 0.4);

}



/* CSS-only Visuals: Charts & Graphs */

/* GE Meter */

.ge-meter {

    width: 200px;

    height: 100px;

    background: #eee;

    border-radius: 100px 100px 0 0;

    position: relative;

    overflow: hidden;

    margin: 0 auto;

}



.ge-fill {

    position: absolute;

    top: 0;

    left: 0;

    width: 100%;

    height: 100%;

    background: conic-gradient(from 180deg, var(--success) 0%, var(--accent) 50%, var(--primary) 100%);

    border-radius: 100px 100px 0 0;

    transform-origin: bottom center;

}



.ge-cover {

    position: absolute;

    bottom: 0;

    left: 50%;

    transform: translateX(-50%);

    width: 160px;

    height: 80px;

    background: white;

    border-radius: 80px 80px 0 0;

    display: flex;

    align-items: flex-end;

    justify-content: center;

    padding-bottom: 10px;

}



.ge-value {

    font-size: 2.5rem;

    font-weight: 800;

    color: var(--primary);

    line-height: 1;

}



.ge-label {

    text-align: center;

    font-size: 0.9rem;

    color: var(--text-light);

    margin-top: 10px;

}



/* ZPD Range Bar */

.zpd-container {

    background: white;

    padding: 20px;

    border-radius: var(--radius);

    box-shadow: var(--shadow-sm);

    margin: 20px 0;

}



.zpd-bar-bg {

    height: 12px;

    background: #e2e8f0;

    border-radius: 6px;

    position: relative;

    margin: 30px 0 10px;

}



.zpd-range {

    position: absolute;

    height: 100%;

    background: linear-gradient(90deg, var(--success), var(--primary));

    border-radius: 6px;

    top: 0;

}



.zpd-marker {

    position: absolute;

    top: -25px;

    transform: translateX(-50%);

    font-weight: bold;

    font-size: 0.9rem;

    color: var(--text);

}



.zpd-marker::after {

    content: '';

    position: absolute;

    bottom: -6px;

    left: 50%;

    transform: translateX(-50%);

    border-left: 5px solid transparent;

    border-right: 5px solid transparent;

    border-top: 6px solid var(--text);

}



/* Report Card */

.report-card {

    background: white;

    border-radius: 16px;

    box-shadow: var(--shadow-md);

    overflow: hidden;

    border: 1px solid #e2e8f0;

}



.report-header {

    background: var(--primary);

    color: white;

    padding: 20px;

    display: flex;

    justify-content: space-between;

    align-items: center;

}



.report-body {

    padding: 30px;

}



.metric-grid {

    display: grid;

    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));

    gap: 20px;

    margin-bottom: 30px;

}



.metric-item {

    text-align: center;

    padding: 15px;

    background: var(--primary-light);

    border-radius: 12px;

    border: 1px solid #bfdbfe;

}



.metric-value {

    font-size: 1.8rem;

    font-weight: 800;

    color: var(--primary);

}



.metric-label {

    font-size: 0.85rem;

    color: var(--text-light);

    margin-top: 5px;

}



/* Section Styling */

section {

    padding: 80px 0;

}



section:nth-child(even) {

    background: white;

}



.hero {

    background: linear-gradient(135deg, #0056b3 0%, #006cdf 100%);

    color: white;

    padding: 100px 0;

    text-align: center;

    position: relative;

    overflow: hidden;

}



.hero::before {

    content: '';

    position: absolute;

    top: 0;

    left: 0;

    width: 100%;

    height: 100%;

    background:

        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 10%),

        radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.1) 0%, transparent 10%);

    pointer-events: none;

}



h1 {

    font-size: 3.5rem;

    margin-bottom: 1.5rem;

    line-height: 1.2;

}



h2 {

    font-size: 2.5rem;

    margin-bottom: 3rem;

    text-align: center;

    color: var(--primary);

}



.grid-2 {

    display: grid;

    grid-template-columns: 1fr 1fr;

    gap: 40px;

    align-items: center;

}



.grid-3 {

    display: grid;

    grid-template-columns: repeat(3, 1fr);

    gap: 30px;

}



/* Feature Cards */

.feature-card {

    background: white;

    padding: 30px;

    border-radius: var(--radius);

    box-shadow: var(--shadow-sm);

    transition: all 0.3s;

    border-top: 4px solid transparent;

}



.feature-card:hover {

    transform: translateY(-10px);

    box-shadow: var(--shadow-lg);

    border-top-color: var(--accent);

}



.icon-box {

    width: 60px;

    height: 60px;

    background: var(--primary-light);

    border-radius: 12px;

    display: flex;

    align-items: center;

    justify-content: center;

    font-size: 1.8rem;

    margin-bottom: 20px;

    color: var(--primary);

}



/* Footer */

footer {
    text-align: center;

    background: #1a202c;

    color: #cbd5e0;

    padding: 60px 0 30px;

}



footer h4 {

    color: white;

    margin-bottom: 20px;

}



footer a {

    color: #cbd5e0;

    text-decoration: none;

    display: block;

    margin-bottom: 10px;

}



footer a:hover {

    color: var(--accent);

}



@media (max-width: 768px) {



    .grid-2,

    .grid-3 {

        grid-template-columns: 1fr;

    }



    h1 {

        font-size: 2.5rem;

    }



    .nav-links {

        display: none;

    }

}