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

:root {
    --primary-color: #4a9eff;
    --primary-hover: #3182ce;
    --danger-color: #f56565;
    --danger-hover: #e53e3e;
    --secondary-color: #718096;
    --secondary-hover: #4a5568;
    --text-primary: #f7fafc;
    --text-secondary: #a0aec0;
    --border-color: #2d3748;
    --background: #1a202c;
    --card-background: #2d3748;
    --error-color: #fc8181;
    --error-background: #742a2a;
    --warning-background: #744210;
    --warning-border: #ecc94b;
    --success-color: #68d391;
    --success-background: #22543d;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #1a202c 0%, #2d3748 50%, #1a365d 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: var(--text-primary);
}

.container {
    width: 100%;
    max-width: 600px;
}

.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card {
    background: var(--card-background);
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    padding: 40px;
}

.header {
    text-align: center;
    margin-bottom: 32px;
}

.header h1 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    margin-top: 8px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.2s;
    background: var(--background);
    color: var(--text-primary);
    font-family: inherit;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #4a5568;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.2);
}

/* Textarea specific styles */
.form-group textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.5;
}

/* Custom scrollbar for textarea (webkit browsers) */
.form-group textarea::-webkit-scrollbar {
    width: 8px;
}

.form-group textarea::-webkit-scrollbar-track {
    background: var(--border-color);
    border-radius: 4px;
}

.form-group textarea::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
}

.form-group textarea::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-hover);
}

/* Character counter */
.char-counter {
    text-align: right;
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.char-counter.warning {
    color: var(--warning-border);
}

.char-counter.danger {
    color: var(--error-color);
}

/* Honeypot (hidden spam protection field) */
.honeypot {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.btn {
    width: 100%;
    padding: 14px 24px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(74, 158, 255, 0.4);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--secondary-hover);
    transform: translateY(-1px);
}

.error-message {
    display: none;
    padding: 12px 16px;
    margin-bottom: 20px;
    background: var(--error-background);
    color: var(--error-color);
    border-radius: 8px;
    font-size: 14px;
    border-left: 4px solid var(--error-color);
}

.error-message.show {
    display: block;
    animation: shake 0.3s;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.success-box {
    text-align: center;
    padding: 24px;
}

.success-icon {
    width: 80px;
    height: 80px;
    color: var(--success-color);
    margin: 0 auto 24px;
    animation: scaleIn 0.4s ease-out;
}

@keyframes scaleIn {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.success-box h2 {
    font-size: 24px;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.success-box p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
}

.success-box p strong {
    color: var(--primary-color);
}

/* Loading state */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 576px) {
    .card {
        padding: 24px;
    }
    
    .header h1 {
        font-size: 24px;
    }
    
    .form-group textarea {
        min-height: 140px;
        font-size: 16px; /* Prevent zoom on iOS */
    }
    
    .success-box {
        padding: 16px;
    }
    
    .success-icon {
        width: 64px;
        height: 64px;
    }
    
    .success-box h2 {
        font-size: 20px;
    }
    
    .success-box p {
        font-size: 14px;
    }
}