:root {
    --primary-color: #00f2fe;
    --secondary-color: #4facfe;
    --bg-color: #0f172a;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --error-color: #ef4444;
    --success-color: #10b981;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 2rem 1rem;
    position: relative;
    overflow-x: hidden;
}

#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.container {
    width: 100%;
    max-width: 800px;
    z-index: 1;
}

.form-header {
    text-align: center;
    margin-bottom: 2rem;
}

.form-header h1 {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.form-header h2 {
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--text-main);
    margin-bottom: 1rem;
}

.form-header p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.5;
    max-width: 600px;
    margin: 0 auto;
}

.form-container {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--glass-shadow);
}

.form-section {
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.form-section.hidden {
    display: none;
    opacity: 0;
    transform: translateY(20px);
}

.section-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 2rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--glass-border);
    color: var(--primary-color);
}

.section-title:first-child {
    margin-top: 0;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: flex;
    gap: 1rem;
}

.form-row .half {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-main);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 242, 254, 0.2);
}

.help-text {
    display: block;
    margin-top: 0.4rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: rgba(15, 23, 42, 0.4);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--glass-border);
}

.radio-group label,
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 400;
    margin-bottom: 0;
    cursor: pointer;
}

input[type="radio"],
input[type="checkbox"] {
    accent-color: var(--primary-color);
    width: 1.2rem;
    height: 1.2rem;
    cursor: pointer;
}

.file-upload {
    background: rgba(15, 23, 42, 0.4);
    padding: 1rem;
    border-radius: 8px;
    border: 1px dashed var(--glass-border);
    text-align: center;
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.btn-primary, .btn-submit {
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    color: #fff;
    width: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.4);
}

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

.loading {
    text-align: center;
    margin-top: 1rem;
    color: var(--primary-color);
    font-weight: 500;
}

.message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    display: none;
}

.message.success {
    display: block;
    background: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.message.error {
    display: block;
    background: rgba(239, 68, 68, 0.2);
    color: var(--error-color);
    border: 1px solid var(--error-color);
}

@media (max-width: 600px) {
    .form-row {
        flex-direction: column;
    }
    
    .form-container {
        padding: 1.5rem;
    }
}