/* ===================================
   AHA Training - Professional Medical Corporate Design
   Blue/White Medical Palette
   =================================== */

:root {
    --primary-blue: #0066cc;
    --dark-blue: #003d7a;
    --light-blue: #4d94ff;
    --accent-blue: #007bff;
    --white: #ffffff;
    --off-white: #f8f9fa;
    --light-gray: #e9ecef;
    --medium-gray: #6c757d;
    --dark-gray: #343a40;
    --success-green: #28a745;
    --warning-red: #dc3545;
    --text-dark: #212529;
    --border-color: #dee2e6;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--off-white);
}

/* Header & Navigation */
header {
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
    color: var(--white);
    padding: 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-top {
    background-color: var(--dark-blue);
    padding: 10px 0;
    font-size: 0.9rem;
}

.header-top .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-contact {
    color: var(--white);
}

.header-contact a {
    color: var(--white);
    text-decoration: none;
    margin-left: 20px;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--white);
    text-decoration: none;
    letter-spacing: 1px;
}

.logo span {
    color: var(--light-blue);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

nav ul li a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 8px 15px;
    border-radius: 4px;
}

nav ul li a:hover,
nav ul li a.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--light-blue);
}

/* Main Content */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

main {
    min-height: calc(100vh - 200px);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--light-blue) 100%);
    color: var(--white);
    padding: 80px 20px;
    text-align: center;
    margin-bottom: 40px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero p {
    font-size: 1.3rem;
    max-width: 800px;
    margin: 0 auto 30px;
    line-height: 1.8;
}

.hero .subtitle {
    font-size: 1.1rem;
    font-weight: 500;
    opacity: 0.95;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: var(--light-blue);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background-color: var(--primary-blue);
    color: var(--white);
    border: 2px solid var(--primary-blue);
}

.btn-secondary:hover {
    background-color: var(--dark-blue);
    border-color: var(--dark-blue);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

.btn-outline:hover {
    background-color: var(--primary-blue);
    color: var(--white);
}

.btn-large {
    padding: 15px 40px;
    font-size: 1.1rem;
}

/* Cards */
.card {
    background: var(--white);
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.card h2 {
    color: var(--primary-blue);
    margin-bottom: 15px;
    font-size: 1.8rem;
}

.card h3 {
    color: var(--dark-blue);
    margin-bottom: 10px;
    font-size: 1.4rem;
}

.card p {
    color: var(--medium-gray);
    line-height: 1.8;
}

/* Grid Layouts */
.grid {
    display: grid;
    gap: 30px;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-gray);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.checkbox-group input[type="checkbox"] {
    margin-top: 4px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-group label {
    margin: 0;
    font-weight: normal;
    cursor: pointer;
}

/* NDA Specific Styles */
.nda-container {
    max-width: 900px;
    margin: 0 auto;
}

.nda-header {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
    color: var(--white);
    border-radius: 8px 8px 0 0;
}

.nda-header h1 {
    font-size: 2.2rem;
    margin-bottom: 10px;
}

.nda-content {
    background: var(--white);
    padding: 40px;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.nda-text {
    max-height: 400px;
    overflow-y: auto;
    border: 2px solid var(--border-color);
    padding: 20px;
    margin: 20px 0;
    background: var(--off-white);
    border-radius: 5px;
    font-size: 0.95rem;
    line-height: 1.8;
}

.nda-text h3 {
    color: var(--primary-blue);
    margin-top: 20px;
    margin-bottom: 10px;
}

.nda-text p {
    margin-bottom: 15px;
}

.signature-pad-container {
    border: 2px solid var(--border-color);
    border-radius: 5px;
    padding: 10px;
    background: var(--white);
    margin: 20px 0;
}

.signature-pad {
    width: 100%;
    height: 200px;
    border: 2px dashed var(--light-gray);
    border-radius: 4px;
    cursor: crosshair;
}

.signature-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
}

.signature-type-toggle {
    display: flex;
    gap: 10px;
}

.signature-type-toggle button {
    padding: 8px 16px;
    border: 2px solid var(--primary-blue);
    background: var(--white);
    color: var(--primary-blue);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.signature-type-toggle button.active {
    background: var(--primary-blue);
    color: var(--white);
}

.clear-signature {
    padding: 8px 16px;
    background: var(--warning-red);
    color: var(--white);
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

/* Alert Messages */
.alert {
    padding: 15px 20px;
    border-radius: 5px;
    margin-bottom: 20px;
    font-weight: 500;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Footer */
footer {
    background-color: var(--dark-gray);
    color: var(--white);
    padding: 40px 20px 20px;
    margin-top: 60px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section h3 {
    margin-bottom: 15px;
    color: var(--light-blue);
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section a {
    color: var(--light-gray);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--light-blue);
}

.footer-bottom {
    border-top: 1px solid var(--medium-gray);
    padding-top: 20px;
    text-align: center;
    color: var(--light-gray);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 20px;
    }

    nav ul {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }

    .nda-content {
        padding: 20px;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

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

.mt-20 {
    margin-top: 20px;
}

.mt-40 {
    margin-top: 40px;
}

.mb-20 {
    margin-bottom: 20px;
}

.mb-40 {
    margin-bottom: 40px;
}

.p-20 {
    padding: 20px;
}

.bold {
    font-weight: 700;
}

.text-muted {
    color: var(--medium-gray);
}

.highlight {
    background-color: #fff3cd;
    padding: 2px 6px;
    border-radius: 3px;
}

/* Loading Spinner */
.spinner {
    border: 4px solid var(--light-gray);
    border-top: 4px solid var(--primary-blue);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Badge */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
}

.badge-primary {
    background-color: var(--primary-blue);
    color: var(--white);
}

.badge-success {
    background-color: var(--success-green);
    color: var(--white);
}

.badge-warning {
    background-color: #ffc107;
    color: var(--dark-gray);
}