:root {
    --primary-color: #074655;
    --secondary-color: #217A7C;
    --accent-color: #F4A300;
    --neutral-light: #F5F5F5;
    --neutral-dark: #333333;
    --dark-bg: #032a33;
    --dark-gradient: linear-gradient(135deg, #032a33 0%, #074655 50%, #032a33 100%);
    --light-bg: #F5F5F5;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
    background: var(--light-bg);
}

/* Header Styles */
.main-header {
    background: #ffffff;
    border-bottom: 2px solid #e9ecef;
    padding: 1rem 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.main-header .logo-text h1 {
    color: var(--primary-color);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-section img {
    height: 55px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-text h1 {
    color: var(--primary-color);
    font-size: 1.3rem;
    font-weight: 700;
    margin: 0;
    line-height: 1.2;
}

.logo-text p {
    color: var(--neutral-dark);
    font-size: 0.8rem;
    margin: 0;
    font-weight: 400;
}

/* Navigation Styles */
.main-nav {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.nav-link {
    padding: 0.5rem 1rem;
    background: transparent;
    color: var(--neutral-dark);
    text-decoration: none;
    border-radius: 0;
    border: none;
    transition: all 0.3s ease;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1rem;
    right: 1rem;
    height: 2px;
    background: var(--primary-color);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.nav-link:hover {
    background: transparent;
    color: var(--primary-color);
    transform: none;
    box-shadow: none;
}

.nav-link:hover::after {
    transform: scaleX(1);
}

.nav-link.primary {
    background: var(--primary-color);
    color: white;
    border-radius: 0.375rem;
    padding: 0.5rem 1.25rem;
}

.nav-link.primary::after {
    display: none;
}

.nav-link.primary:hover {
    background: #053d47;
    color: white;
}

/* Form Section - Only Gradient Background */
.form-section {
    background: linear-gradient(180deg, #021a1f 0%, #032a33 25%, #074655 50%, #0a5a6b 75%, #0d6b7f 100%);
    padding: 3rem 0;
    position: relative;
    overflow: hidden;
    min-height: 100vh;
}

.form-section .container {
    position: relative;
    z-index: 1;
}

.registration-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 1rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    padding: 2.5rem;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.section-title {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

/* Footer - Dark Gradient */
.main-footer {
    background: var(--dark-gradient);
    color: white;
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h5 {
    color: var(--secondary-color);
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-section ul li a:hover {
    color: var(--secondary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1.5rem;
    text-align: center;
    color: #aaa;
}

.document-item {
    border: 2px dashed #dee2e6;
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1rem;
    transition: border-color 0.2s, background-color 0.2s;
    will-change: border-color, background-color;
}

.document-item.uploaded {
    border-color: var(--primary-color);
    background-color: #f0f9f0;
}

/* Optimize file input for better performance */
input[type="file"] {
    cursor: pointer;
    pointer-events: auto;
}

input[type="file"]:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.checklist-item {
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    border-radius: 0.25rem;
    background-color: #f8f9fa;
}

.checklist-item.checked {
    background-color: #d4edda;
    border-left: 4px solid var(--primary-color);
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: #053d47;
    border-color: #053d47;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}