:root {
    --primary-color: #007BFF;
    --primary-gradient: linear-gradient(90deg, #007BFF 0%, #0056b3 100%);
    --primary-hover-color: #0056b3;
    --dark-color: #212529;
    --gray-color: #6c757d;
    --light-color: #f8f9fa;
    --white-color: #ffffff;
    --success-color: #28a745;
    --error-color: #dc3545;
    --warning-color: #ffc107;
    --border-color: #dee2e6;
    --border-radius: 12px;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.07), 0 1px 1px rgba(0, 0, 0, 0.05);
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 4px 15px rgba(255, 193, 7, 0.2); }
    50% { transform: scale(1.03); box-shadow: 0 7px 25px rgba(255, 193, 7, 0.4); }
    100% { transform: scale(1); box-shadow: 0 4px 15px rgba(255, 193, 7, 0.2); }
}
@keyframes spin { to { transform: rotate(360deg); } }

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: var(--dark-color);
    line-height: 1.6;
    background-color: #f0f4f8;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 20 20'%3E%3Cg fill='%23e0eafc' fill-opacity='0.4'%3E%3Cpath fill-rule='evenodd' d='M0 0h20v1H0zM0 3h20v1H0zM0 6h20v1H0zM0 9h20v1H0zM0 12h20v1H0zM0 15h20v1H0zM0 18h20v1H0z'/%3E%3C/g%3E%3C/svg%3E");
    animation: fadeIn 0.5s ease-out;
}

.container {
    max-width: 750px;
    width: 100%;
    background: var(--white-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    margin: 20px 0;
    border: 1px solid rgba(255, 255, 255, 0.5);
    animation: fadeInUp 0.5s ease-out 0.1s;
    animation-fill-mode: backwards;
}

.header {
    padding: 30px 40px;
    text-align: center;
    border-bottom: 1px solid #f0f0f0;
    background-color: var(--white-color);
}

.header h1 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--dark-color);
}

.header p {
    font-size: 1rem;
    font-weight: 400;
    color: var(--gray-color);
    margin-top: 5px;
}

.logo-img {
    max-width: 150px;
    height: auto;
    margin-bottom: 15px;
}

.form-container {
    padding: 30px 40px;
}

.form-section {
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid #f0f0f0;
    animation: fadeInUp 0.5s ease-out;
    animation-fill-mode: backwards;
}
.form-section:last-of-type { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.form-section:nth-of-type(1) { animation-delay: 0.3s; }
.form-section:nth-of-type(2) { animation-delay: 0.4s; }
.form-section:nth-of-type(3) { animation-delay: 0.5s; }

.form-section h3 {
    font-family: 'Poppins', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 20px;
    border-left: 4px solid var(--primary-color);
    padding-left: 10px;
}

.form-group { margin-bottom: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

label { 
    display: block; 
    margin-bottom: 8px; 
    font-weight: 500;
    color: #344054;
    font-size: 0.9rem; 
}
.required::after { content: " *"; color: var(--error-color); }

.input-group { position: relative; }
.input-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-color);
    transition: color 0.3s ease;
}
.input-icon svg { width: 18px; height: 18px; }

input, select, textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.95rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    background: var(--white-color);
    color: var(--dark-color);
    font-weight: 400;
}
.input-group input { padding-left: 45px; }
input::placeholder, textarea::placeholder { color: #adb5bd; }
.input-group:focus-within .input-icon { color: var(--primary-color); }
input:focus, select:focus, textarea:focus { 
    outline: none; 
    border-color: var(--primary-color); 
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.15);
}
textarea { resize: vertical; min-height: 80px; }
input[readonly] {
    background-color: var(--light-color);
    border: 1px solid var(--border-color);
    padding: 12px 15px;
    border-radius: 8px;
    cursor: not-allowed;
    color: var(--gray-color);
    box-shadow: none;
}

.file-input-wrapper {
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 25px 15px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.3s, background-color 0.3s;
}
.file-input-wrapper:hover { 
    border-color: var(--primary-color); 
    background-color: #f8faff;
}
.file-input-wrapper input[type="file"] {
    font-size: 100px;
    position: absolute;
    left: 0;
    top: 0;
    opacity: 0;
    cursor: pointer;
}
.file-input-icon {
    color: var(--primary-color);
    margin-bottom: 15px;
}
.file-input-icon svg { width: 40px; height: 40px; }
.file-input-label {
    color: var(--dark-color);
    font-weight: 600;
    font-size: 1rem;
}
#file-name-label {
    color: var(--gray-color);
    font-weight: 400;
    font-size: 0.9rem;
    margin-top: 4px;
}
#file-name {
    display: block;
    margin-top: 10px;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.9rem;
}

.checkbox-group {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
    padding: 10px 0;
}
.checkbox-group input { display: none; }
.checkbox-group label { margin-bottom: 0; font-size: 0.95rem; cursor: pointer; font-weight: 500; color: var(--dark-color); }
.checkbox-custom {
    height: 22px; width: 22px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    display: inline-block;
    margin-right: 12px;
    position: relative;
    transition: all 0.2s ease-in-out;
    flex-shrink: 0;
}
.checkbox-group input:checked + .checkbox-custom {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    transform: scale(1.05);
}
.checkbox-custom::after {
    content: '';
    position: absolute;
    left: 6px; top: 2px;
    width: 6px; height: 12px;
    border: solid var(--white-color);
    border-width: 0 3px 3px 0;
    transform: rotate(45deg) scale(0);
    opacity: 0;
    transition: all 0.2s ease-in-out;
}
.checkbox-group input:checked + .checkbox-custom::after {
    transform: rotate(45deg) scale(1);
    opacity: 1;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 14px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1.05rem;
    text-align: center;
    margin-top: 20px;
}
#registrationForm button[type="submit"] {
    animation: fadeInUp 0.5s ease-out 0.6s;
    animation-fill-mode: backwards;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--white-color);
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.2);
}
.btn-primary:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 7px 20px rgba(0, 123, 255, 0.3);
}
.btn-primary:disabled {
    background: #adb5bd;
    cursor: not-allowed;
    box-shadow: none;
}

.btn-secondary {
    background-color: #6c757d;
    color: var(--white-color);
    font-size: 0.9rem;
    padding: 10px 15px;
    margin-top: 10px;
    width: auto;
}
.btn-secondary:hover { background-color: #5a6268; }

.btn-warning {
    background-color: var(--warning-color);
    color: var(--dark-color);
    font-size: 1rem;
    padding: 12px 15px;
    margin-top: 15px;
    width: 100%;
    box-shadow: 0 4px 15px rgba(255, 193, 7, 0.2);
    animation: fadeInDown 0.5s ease-out, pulse 2s infinite 0.5s;
}
.btn-warning:hover:not(:disabled) { 
    background-color: #e0a800; 
    box-shadow: 0 7px 25px rgba(255, 193, 7, 0.4);
    transform: translateY(-2px);
}
.btn-warning:disabled {
    background-color: #ffc107;
    opacity: 0.7;
    cursor: not-allowed;
    animation: none;
}

.btn-location {
    background-color: var(--success-color);
    color: var(--white-color);
    font-size: 0.9rem;
    padding: 10px 15px;
    margin-top: 10px;
    width: auto;
}
.btn-location:hover { background-color: #218838; }

.location-button-group {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.location-warning {
    padding: 15px;
    background-color: #fff3cd;
    border: 1px solid #ffeeba;
    border-radius: 8px;
    color: #856404;
    margin-bottom: 10px;
    font-size: 0.9rem;
    text-align: center;
}

.notification { display: none; }
.overlay { display: none; }

.error-message, .status-message { color: var(--error-color); font-size: 0.8rem; margin-top: 8px; font-weight: 500; display: none; }
.status-message { color: var(--dark-color); }
.input-group ~ .error-message { margin-top: 8px; }

#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(5px);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.3s ease;
    opacity: 0;
}
#loading-overlay.visible {
    display: flex;
    opacity: 1;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 6px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

#loading-text {
    font-family: 'Poppins', sans-serif;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--dark-color);
    text-align: center;
    padding: 0 20px;
}

.agreement-content {
    background: white;
    padding: 20px;
    font-family: 'Times New Roman', serif;
    max-width: 210mm;
    margin: 0 auto;
    line-height: 1.5;
}
.agreement-content .header-surat {
    text-align: center;
    margin-bottom: 20px;
}
.agreement-content h2 {
    text-align: center;
    font-size: 18px;
    margin: 20px 0;
    border: 1px solid #ddd;
    padding: 8px;
    background: #f9f9f9;
}
.agreement-content p {
    margin-bottom: 8px;
}
.agreement-content ul {
    margin-left: 20px;
}
.agreement-content .form-input {
    font-weight: bold;
    color: #1a3d7c;
    border-bottom: 1px solid #333;
    padding: 0 4px;
}
.agreement-content .qrcode-container {
    width: 100px;
    height: 100px;
    margin: 15px auto;
}

@media (max-width: 768px) {
    .form-row { grid-template-columns: 1fr; gap: 0; }
    .header h1 { font-size: 1.5rem; }
    .form-container, .header { padding: 25px 20px; }
    .location-button-group { flex-direction: column; }
    .btn { width: 100%; }
}