:root {
    --primary-blue: #005a9c;
    --primary-blue-dark: #003d6b;
    --bg-light: #f4f7f6;
    --text-main: #333333;
    --text-heading: #1a1a1a;
    --card-bg: #ffffff;
    --focus-gold: #ffcc00;
    --border-color: #e2e8f0;
    --success-green: #28a745;
    --warning-orange: #ffc107;
    --danger-red: #dc3545;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-light);
    color: var(--text-main);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.7;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-heading);
    font-weight: 700;
    margin-top: 0;
    margin-bottom: 1.2rem;
    letter-spacing: -0.5px;
}

a {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

a:hover {
    color: var(--primary-blue-dark);
    text-decoration: underline;
}

*:focus-visible {
    outline: 3px solid var(--focus-gold) !important;
    outline-offset: 3px !important;
    border-radius: 4px;
}

.skip-link {
    position: absolute;
    top: -50px;
    left: 0;
    background: var(--primary-blue);
    color: #ffffff;
    padding: 12px 24px;
    font-weight: bold;
    z-index: 9999;
    transition: top 0.3s ease;
    text-decoration: none;
}

.skip-link:focus {
    top: 0;
    outline: 4px solid var(--focus-gold) !important;
}

.live-status {
    position: absolute;
    left: -10000px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

header, .main-nav {
    background-color: var(--card-bg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    padding: 20px 5%;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

header h1 {
    color: var(--primary-blue);
    font-size: 2.2rem;
    margin-bottom: 15px;
}

nav {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    align-items: center;
}

nav a {
    color: var(--text-main);
    font-size: 1.05rem;
    padding: 8px 12px;
    border-radius: 6px;
}

nav a:hover {
    background-color: #eef4ff;
    color: var(--primary-blue);
    text-decoration: none;
}

nav a.active-link {
    background-color: var(--primary-blue);
    color: #ffffff;
}

.container, .main-container, .about-grid {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 5%;
}

[class*="card"], [class*="-box"], [class*="-section"], [class*="-container"], [class*="-panel"], [class*="-wrapper"] {
    background-color: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
    padding: 35px;
    margin-bottom: 30px;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

[class*="card"]:hover, [class*="-box"]:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 90, 156, 0.08);
    border-color: #cce0ff;
}

button, .btn {
    background-color: var(--primary-blue);
    color: #ffffff;
    border: none;
    padding: 14px 28px;
    font-size: 1.05rem;
    font-weight: 700;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    text-align: center;
    text-decoration: none;
}

button:hover, .btn:hover {
    background-color: var(--primary-blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(0, 90, 156, 0.2);
    color: #ffffff;
}

button:active, .btn:active {
    transform: translateY(0);
}

input[type="text"], 
input[type="password"], 
input[type="email"], 
input[type="number"], 
textarea, 
select {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1.05rem;
    color: var(--text-main);
    background-color: #fcfcfc;
    box-sizing: border-box;
    transition: all 0.3s ease;
    font-family: inherit;
}

input:focus, 
textarea:focus, 
select:focus {
    outline: none;
    border-color: var(--primary-blue);
    background-color: #ffffff;
    box-shadow: 0 0 0 4px rgba(0, 90, 156, 0.1);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1.5rem;
    background-color: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
}

th, td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    font-weight: 700;
    color: var(--primary-blue-dark);
    background-color: #f0f4f8;
}

[role="tabpanel"][aria-hidden="true"] {
    display: none;
}

.center-text {
    text-align: center;
}

.justify-text {
    text-align: justify;
}

.mt-0 {
    margin-top: 0;
}

.mb-0 {
    margin-bottom: 0;
}

.section-header {
    text-align: center;
    border-bottom: 3px solid #eef4ff;
    padding-bottom: 15px;
    color: var(--primary-blue);
    font-size: 2rem;
}

.qr-container {
    text-align: center;
    background-color: #f8f9fa;
    border: 3px dashed var(--primary-blue);
    padding: 40px;
    border-radius: 16px;
    margin-bottom: 30px;
}

.qr-image {
    width: 280px !important;
    height: 280px !important;
    object-fit: contain !important;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    margin-bottom: 25px;
    transition: transform 0.3s ease;
    background-color: #ffffff;
    padding: 10px;
}

.qr-image:hover {
    transform: scale(1.05);
}

.upi-text {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary-blue-dark);
    margin-bottom: 10px;
    letter-spacing: 1.5px;
}

.account-name {
    font-size: 1.2rem;
    color: var(--text-main);
    font-weight: 600;
    margin-bottom: 20px;
}

.voluntary-box {
    background-color: #eef4ff;
    border-left: 6px solid var(--primary-blue);
    padding: 25px 30px;
    border-radius: 10px;
    margin-bottom: 35px;
    color: var(--primary-blue-dark);
}

.disclaimer-box {
    background-color: #fff8e6;
    border-left: 6px solid var(--warning-orange);
    padding: 25px 30px;
    border-radius: 10px;
    margin-bottom: 35px;
    color: #856404;
}

.transparency-box {
    background-color: #f0fdf4;
    border-left: 6px solid var(--success-green);
    padding: 25px 30px;
    border-radius: 10px;
    color: #155724;
    margin-top: 35px;
}

.protocol-box {
    background-color: #ffffff;
    padding: 30px;
    border-radius: 10px;
    border: 2px solid var(--border-color);
}

.protocol-title {
    color: var(--primary-blue);
    margin-top: 0;
    font-size: 1.5rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.feature-card {
    margin-bottom: 0 !important;
    display: flex;
    flex-direction: column;
}

.feature-card h3 {
    color: var(--primary-blue);
    border-bottom: 2px solid #eef4ff;
    padding-bottom: 10px;
}

footer {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 40px 5%;
    text-align: center;
    margin-top: 60px;
    color: #64748b;
    font-size: 1.05rem;
}

footer a {
    color: var(--primary-blue);
    margin: 0 10px;
}
@media screen and (max-width: 768px) {
    header, .main-nav {
        position: static;
        padding: 10px 5%;
    }
    header h1 {
        font-size: 1.8rem;
        margin-bottom: 10px;
    }
    nav {
        gap: 8px;
    }
    nav a {
        font-size: 0.95rem;
        padding: 6px 10px;
    }
    .skip-link {
        top: -100px;
    }
    .skip-link:focus {
        top: 0;
    }
}