* {
    font-family: 'Vazirmatn', Tahoma, sans-serif;
}

body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.auth-card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    padding: 40px 32px;
}

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

.auth-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: #1F2937;
    margin-bottom: 8px;
}

.auth-header p {
    font-size: 14px;
    color: #6B7280;
    margin: 0;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: #374151;
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    font-size: 16px;
    border: 1.5px solid #E5E7EB;
    border-radius: 10px;
    outline: none;
    transition: all 0.2s;
    text-align: center;
    letter-spacing: 2px;
    direction: ltr;
    box-sizing: border-box;
}

.form-control:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.otp-input {
    font-size: 24px;
    letter-spacing: 12px;
    font-weight: 600;
    padding: 16px;
}

.btn {
    display: inline-block;
    width: 100%;
    padding: 14px 24px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

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

.btn-block {
    display: block;
    width: 100%;
}

.alert {
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 14px;
    margin-top: 16px;
    text-align: center;
}

.alert-danger {
    background: #FEE2E2;
    color: #991B1B;
    border: 1px solid #FECACA;
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 13px;
    color: #6B7280;
}

.auth-footer a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
}

.auth-footer a:hover {
    text-decoration: underline;
}